Release 0.4.0

* Add italian language

* italian language: fix aapt error

* small edit

.travis.yml

@@ -5,8 +5,8 @@ android:
     - tools
 
     # The BuildTools version used by your project
-    - build-tools-24.0.2
-    - android-24
+    - build-tools-25.0.1
+    - android-25
     - extra-android-m2repository
     - extra-google-m2repository
     - extra-android-support
@@ -18,7 +18,7 @@ jdk:
 before_script:
     - chmod +x gradlew
 #Build, and run tests
-script: "./gradlew clean buildDebug"
+script: "./gradlew clean buildStandardDebug"
 sudo: false
 
 before_cache:

app/build.gradle

@@ -28,27 +28,22 @@ ext {
     }
 }
 
-def includeUpdater() {
-    return hasProperty("include_updater")
-}
-
 android {
-    compileSdkVersion 24
-    buildToolsVersion "24.0.2"
+    compileSdkVersion 25
+    buildToolsVersion "25.0.1"
     publishNonDefault true
 
     defaultConfig {
         applicationId "eu.kanade.tachiyomi"
         minSdkVersion 16
-        targetSdkVersion 24
+        targetSdkVersion 25
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-        versionCode 12
-        versionName "0.3.1"
+        versionCode 16
+        versionName "0.4.0"
 
         buildConfigField "String", "COMMIT_COUNT", "\"${getCommitCount()}\""
         buildConfigField "String", "COMMIT_SHA", "\"${getGitSha()}\""
         buildConfigField "String", "BUILD_TIME", "\"${getBuildTime()}\""
-        buildConfigField "boolean", "INCLUDE_UPDATER", "${includeUpdater()}"
 
         vectorDrawables.useSupportLibrary = true
 
@@ -71,6 +66,16 @@ android {
         }
     }
 
+    productFlavors {
+        standard {
+            buildConfigField "boolean", "INCLUDE_UPDATER", "true"
+        }
+
+        fdroid {
+            buildConfigField "boolean", "INCLUDE_UPDATER", "false"
+        }
+    }
+
     packagingOptions {
         exclude 'META-INF/DEPENDENCIES'
         exclude 'LICENSE.txt'
@@ -93,11 +98,10 @@ android {
 dependencies {
 
     // Modified dependencies
-    compile 'com.github.inorichi:subsampling-scale-image-view:2d9c854'
-    compile 'com.github.inorichi:ReactiveNetwork:69092ed'
+    compile 'com.github.inorichi:subsampling-scale-image-view:f687b74'
 
     // Android support library
-    final support_library_version = '24.2.1'
+    final support_library_version = '25.0.1'
     compile "com.android.support:support-v4:$support_library_version"
     compile "com.android.support:appcompat-v7:$support_library_version"
     compile "com.android.support:cardview-v7:$support_library_version"
@@ -108,15 +112,16 @@ dependencies {
 
     compile 'com.android.support:multidex:1.0.1'
 
-    compile 'com.google.android.gms:play-services-gcm:9.6.1'
-
     // ReactiveX
     compile 'io.reactivex:rxandroid:1.2.1'
-    compile 'io.reactivex:rxjava:1.2.1'
+    compile 'io.reactivex:rxjava:1.2.3'
+    compile 'com.jakewharton.rxrelay:rxrelay:1.2.0'
     compile 'com.f2prateek.rx.preferences:rx-preferences:1.0.2'
+    compile 'com.github.pwittchen:reactivenetwork:0.6.0'
 
     // Network client
-    compile "com.squareup.okhttp3:okhttp:3.4.1"
+    compile "com.squareup.okhttp3:okhttp:3.5.0"
+    compile 'com.squareup.okio:okio:1.11.0'
 
     // REST
     final retrofit_version = '2.1.0'
@@ -124,24 +129,26 @@ dependencies {
     compile "com.squareup.retrofit2:converter-gson:$retrofit_version"
     compile "com.squareup.retrofit2:adapter-rxjava:$retrofit_version"
 
-    // IO
-    compile 'com.squareup.okio:okio:1.10.0'
-
     // JSON
-    compile 'com.google.code.gson:gson:2.7'
+    compile 'com.google.code.gson:gson:2.8.0'
     compile 'com.github.salomonbrys.kotson:kotson:2.4.0'
 
     // YAML
     compile 'com.github.bmoliveira:snake-yaml:v1.18-android'
 
     // JavaScript engine
-    compile 'com.squareup.duktape:duktape-android:1.0.0'
+    compile 'com.squareup.duktape:duktape-android:1.1.0'
 
-    // Disk cache
+    // Disk
     compile 'com.jakewharton:disklrucache:2.0.2'
+    compile 'com.github.seven332:unifile:1.0.0'
 
-    // Parse HTML
-    compile 'org.jsoup:jsoup:1.9.2'
+    // HTML parser
+    compile 'org.jsoup:jsoup:1.10.1'
+
+    // Job scheduling
+    compile 'com.evernote:android-job:1.1.3'
+    compile 'com.google.android.gms:play-services-gcm:10.0.1'
 
     // Changelog
     compile 'com.github.gabrielemariotti.changeloglib:changelog:2.1.0'
@@ -176,8 +183,8 @@ dependencies {
     compile 'eu.davidea:flexible-adapter:4.2.0'
     compile 'com.nononsenseapps:filepicker:2.5.2'
     compile 'com.github.amulyakhare:TextDrawable:558677e'
-    compile 'com.afollestad.material-dialogs:core:0.9.0.2'
-    compile 'net.xpece.android:support-preference:1.0.3'
+    compile 'com.afollestad.material-dialogs:core:0.9.1.0'
+    compile 'net.xpece.android:support-preference:1.2.0'
     compile 'me.zhanghai.android.systemuihelper:library:1.0.0'
     compile 'de.hdodenhof:circleimageview:2.1.0'
 
@@ -185,15 +192,17 @@ dependencies {
     testCompile 'junit:junit:4.12'
     testCompile 'org.assertj:assertj-core:1.7.1'
     testCompile 'org.mockito:mockito-core:1.10.19'
-    testCompile 'org.robolectric:robolectric:3.1.2'
-    testCompile 'org.robolectric:shadows-multidex:3.1.2'
-    testCompile 'org.robolectric:shadows-play-services:3.1.2'
+
+    final robolectric_version = '3.1.4'
+    testCompile "org.robolectric:robolectric:$robolectric_version"
+    testCompile "org.robolectric:shadows-multidex:$robolectric_version"
+    testCompile "org.robolectric:shadows-play-services:$robolectric_version"
 
     compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }
 
 buildscript {
-    ext.kotlin_version = '1.0.4'
+    ext.kotlin_version = '1.0.5-2'
     repositories {
         mavenCentral()
     }

app/proguard-rules.pro

@@ -2,6 +2,9 @@
 
 -keep class eu.kanade.tachiyomi.**
 
+-keep class com.hippo.image.** { *; }
+-keep interface com.hippo.image.** { *; }
+
 # OkHttp
 -keepattributes Signature
 -keepattributes *Annotation*
@@ -61,7 +64,10 @@
     public <init>(android.content.Context);
 }
 
-## GSON 2.2.4 specific rules ##
+# ReactiveNetwork
+-dontwarn com.github.pwittchen.reactivenetwork.**
+
+## GSON ##
 
 # Gson uses generic type information stored in a class file when working with fields. Proguard
 # removes such information by default, so configure it to keep all of it.
@@ -70,55 +76,18 @@
 # For using GSON @Expose annotation
 -keepattributes *Annotation*
 
--keepattributes EnclosingMethod
-
 # Gson specific classes
 -keep class sun.misc.Unsafe { *; }
--keep class com.google.gson.stream.** { *; }
+#-keep class com.google.gson.stream.** { *; }
 
-## ACRA 4.5.0 specific rules ##
+# Application classes that will be serialized/deserialized over Gson
+-keep class com.google.gson.examples.android.model.** { *; }
 
-# we need line numbers in our stack traces otherwise they are pretty useless
--renamesourcefileattribute SourceFile
--keepattributes SourceFile,LineNumberTable
-
-# ACRA needs "annotations" so add this...
--keepattributes *Annotation*
-
-# keep this class so that logging will show 'ACRA' and not a obfuscated name like 'a'.
-# Note: if you are removing log messages elsewhere in this file then this isn't necessary
--keep class org.acra.ACRA {
-	*;
-}
-
-# keep this around for some enums that ACRA needs
--keep class org.acra.ReportingInteractionMode {
-    *;
-}
-
--keepnames class org.acra.sender.HttpSender$** {
-    *;
-}
-
--keepnames class org.acra.ReportField {
-    *;
-}
-
-# keep this otherwise it is removed by ProGuard
--keep public class org.acra.ErrorReporter {
-    public void addCustomData(java.lang.String,java.lang.String);
-    public void putCustomData(java.lang.String,java.lang.String);
-    public void removeCustomData(java.lang.String);
-}
-
-# keep this otherwise it is removed by ProGuard
--keep public class org.acra.ErrorReporter {
-    public void handleSilentException(java.lang.Throwable);
-}
-
-# Keep the support library
--keep class org.acra.** { *; }
--keep interface org.acra.** { *; }
+# Prevent proguard from stripping interface information from TypeAdapterFactory,
+# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
 
 # SnakeYaml
 -keep class org.yaml.snakeyaml.** { public protected private *; }

app/src/main/AndroidManifest.xml

@@ -54,6 +54,16 @@
             android:theme="@style/FilePickerTheme">
         </activity>
 
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="${applicationId}.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/provider_paths"/>
+        </provider>
+
         <service android:name=".data.library.LibraryUpdateService"
             android:exported="false"/>
 
@@ -63,32 +73,14 @@
         <service android:name=".data.mangasync.UpdateMangaSyncService"
             android:exported="false"/>
 
-        <service
-            android:name=".data.library.LibraryUpdateTrigger"
-            android:exported="true"
-            android:permission="com.google.android.gms.permission.BIND_NETWORK_TASK_SERVICE">
-            <intent-filter>
-                <action android:name="com.google.android.gms.gcm.ACTION_TASK_READY" />
-            </intent-filter>
-        </service>
-
-        <service
-            android:name=".data.updater.UpdateCheckerService"
-            android:exported="true"
-            android:permission="com.google.android.gms.permission.BIND_NETWORK_TASK_SERVICE">
-            <intent-filter>
-                <action android:name="com.google.android.gms.gcm.ACTION_TASK_READY" />
-            </intent-filter>
-        </service>
-
         <service android:name=".data.updater.UpdateDownloaderService"
             android:exported="false"/>
 
         <receiver android:name=".data.updater.UpdateNotificationReceiver"/>
 
-        <receiver
-            android:name=".data.library.LibraryUpdateService$CancelUpdateReceiver">
-        </receiver>
+        <receiver android:name=".data.library.LibraryUpdateService$CancelUpdateReceiver" />
+
+        <receiver android:name=".ui.reader.notification.ImageNotificationReceiver" />
 
         <meta-data
             android:name="eu.kanade.tachiyomi.data.glide.AppGlideModule"

app/src/main/java/eu/kanade/tachiyomi/App.kt

@@ -3,6 +3,9 @@ package eu.kanade.tachiyomi
 import android.app.Application
 import android.content.Context
 import android.support.multidex.MultiDex
+import com.evernote.android.job.JobManager
+import eu.kanade.tachiyomi.data.library.LibraryUpdateJob
+import eu.kanade.tachiyomi.data.updater.UpdateCheckerJob
 import org.acra.ACRA
 import org.acra.annotation.ReportsCrashes
 import timber.log.Timber
@@ -27,6 +30,7 @@ open class App : Application() {
         if (BuildConfig.DEBUG) Timber.plant(Timber.DebugTree())
 
         setupAcra()
+        setupJobManager()
     }
 
     override fun attachBaseContext(base: Context) {
@@ -40,4 +44,14 @@ open class App : Application() {
         ACRA.init(this)
     }
 
+    protected open fun setupJobManager() {
+        JobManager.create(this).addJobCreator { tag ->
+            when (tag) {
+                LibraryUpdateJob.TAG -> LibraryUpdateJob()
+                UpdateCheckerJob.TAG -> UpdateCheckerJob()
+                else -> null
+            }
+        }
+    }
+
 }

app/src/main/java/eu/kanade/tachiyomi/Constants.kt

@@ -5,4 +5,5 @@ object Constants {
     const val NOTIFICATION_UPDATER_ID = 2
     const val NOTIFICATION_DOWNLOAD_CHAPTER_ID = 3
     const val NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID = 4
+    const val NOTIFICATION_DOWNLOAD_IMAGE_ID = 5
 }

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt

@@ -3,8 +3,10 @@ package eu.kanade.tachiyomi.data.backup
 import com.github.salomonbrys.kotson.fromJson
 import com.google.gson.*
 import com.google.gson.stream.JsonReader
+import eu.kanade.tachiyomi.data.backup.serializer.BooleanSerializer
 import eu.kanade.tachiyomi.data.backup.serializer.IdExclusion
 import eu.kanade.tachiyomi.data.backup.serializer.IntegerSerializer
+import eu.kanade.tachiyomi.data.backup.serializer.LongSerializer
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.database.models.*
 import java.io.*
@@ -42,7 +44,9 @@ class BackupManager(private val db: DatabaseHelper) {
 
     @Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN")
     private val gson = GsonBuilder()
-            .registerTypeAdapter(Integer::class.java, IntegerSerializer())
+            .registerTypeAdapter(java.lang.Integer::class.java, IntegerSerializer())
+            .registerTypeAdapter(java.lang.Boolean::class.java, BooleanSerializer())
+            .registerTypeAdapter(java.lang.Long::class.java, LongSerializer())
             .setExclusionStrategies(IdExclusion())
             .create()
 

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/BooleanSerializer.kt

@@ -0,0 +1,16 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+import java.lang.reflect.Type
+
+class BooleanSerializer : JsonSerializer<Boolean> {
+
+    override fun serialize(value: Boolean?, type: Type, context: JsonSerializationContext): JsonElement? {
+        if (value != null && value != false)
+            return JsonPrimitive(value)
+        return null
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/IdExclusion.kt

@@ -2,10 +2,10 @@ package eu.kanade.tachiyomi.data.backup.serializer
 
 import com.google.gson.ExclusionStrategy
 import com.google.gson.FieldAttributes
-import eu.kanade.tachiyomi.data.database.models.Category
-import eu.kanade.tachiyomi.data.database.models.Chapter
-import eu.kanade.tachiyomi.data.database.models.Manga
-import eu.kanade.tachiyomi.data.database.models.MangaSync
+import eu.kanade.tachiyomi.data.database.models.CategoryImpl
+import eu.kanade.tachiyomi.data.database.models.ChapterImpl
+import eu.kanade.tachiyomi.data.database.models.MangaImpl
+import eu.kanade.tachiyomi.data.database.models.MangaSyncImpl
 
 class IdExclusion : ExclusionStrategy {
 
@@ -15,10 +15,10 @@ class IdExclusion : ExclusionStrategy {
     private val syncExclusions = listOf("id", "manga_id", "update")
 
     override fun shouldSkipField(f: FieldAttributes) = when (f.declaringClass) {
-        Manga::class.java -> mangaExclusions.contains(f.name)
-        Chapter::class.java -> chapterExclusions.contains(f.name)
-        MangaSync::class.java -> syncExclusions.contains(f.name)
-        Category::class.java -> categoryExclusions.contains(f.name)
+        MangaImpl::class.java -> mangaExclusions.contains(f.name)
+        ChapterImpl::class.java -> chapterExclusions.contains(f.name)
+        MangaSyncImpl::class.java -> syncExclusions.contains(f.name)
+        CategoryImpl::class.java -> categoryExclusions.contains(f.name)
         else -> false
     }
 

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/LongSerializer.kt

@@ -0,0 +1,16 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+import java.lang.reflect.Type
+
+class LongSerializer : JsonSerializer<Long> {
+
+    override fun serialize(value: Long?, type: Type, context: JsonSerializationContext): JsonElement? {
+        if (value != null && value !== 0L)
+            return JsonPrimitive(value)
+        return null
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/cache/ChapterCache.kt

@@ -2,18 +2,18 @@ package eu.kanade.tachiyomi.data.cache
 
 import android.content.Context
 import android.text.format.Formatter
+import com.github.salomonbrys.kotson.fromJson
 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
 import com.jakewharton.disklrucache.DiskLruCache
 import eu.kanade.tachiyomi.data.source.model.Page
-import eu.kanade.tachiyomi.util.DiskUtils
-import eu.kanade.tachiyomi.util.saveImageTo
+import eu.kanade.tachiyomi.util.DiskUtil
+import eu.kanade.tachiyomi.util.saveTo
 import okhttp3.Response
 import okio.Okio
 import rx.Observable
+import uy.kohesive.injekt.injectLazy
 import java.io.File
 import java.io.IOException
-import java.lang.reflect.Type
 
 /**
  * Class used to create chapter cache
@@ -26,15 +26,6 @@ import java.lang.reflect.Type
  */
 class ChapterCache(private val context: Context) {
 
-    /** Google Json class used for parsing JSON files.  */
-    private val gson: Gson = Gson()
-
-    /** Cache class used for cache management.  */
-    private val diskCache: DiskLruCache
-
-    /** Page list collection used for deserializing from JSON.  */
-    private val pageListCollection: Type = object : TypeToken<List<Page>>() {}.type
-
     companion object {
         /** Name of cache directory.  */
         const val PARAMETER_CACHE_DIRECTORY = "chapter_disk_cache"
@@ -49,38 +40,37 @@ class ChapterCache(private val context: Context) {
         const val PARAMETER_CACHE_SIZE = 75L * 1024 * 1024
     }
 
-    init {
-        // Open cache in default cache directory.
-        diskCache = DiskLruCache.open(
-                File(context.cacheDir, PARAMETER_CACHE_DIRECTORY),
-                PARAMETER_APP_VERSION,
-                PARAMETER_VALUE_COUNT,
-                PARAMETER_CACHE_SIZE)
-    }
+    /** Google Json class used for parsing JSON files.  */
+    private val gson: Gson by injectLazy()
+
+    /** Cache class used for cache management.  */
+    private val diskCache = DiskLruCache.open(
+            File(context.externalCacheDir, PARAMETER_CACHE_DIRECTORY),
+            PARAMETER_APP_VERSION,
+            PARAMETER_VALUE_COUNT,
+            PARAMETER_CACHE_SIZE)
 
     /**
      * Returns directory of cache.
-     * @return directory of cache.
      */
     val cacheDir: File
         get() = diskCache.directory
 
     /**
      * Returns real size of directory.
-     * @return real size of directory.
      */
     private val realSize: Long
-        get() = DiskUtils.getDirectorySize(cacheDir)
+        get() = DiskUtil.getDirectorySize(cacheDir)
 
     /**
      * Returns real size of directory in human readable format.
-     * @return real size of directory.
      */
     val readableSize: String
         get() = Formatter.formatFileSize(context, realSize)
 
     /**
      * Remove file from cache.
+     *
      * @param file name of file "md5.0".
      * @return status of deletion for the file.
      */
@@ -101,23 +91,25 @@ class ChapterCache(private val context: Context) {
 
     /**
      * Get page list from cache.
+     *
      * @param chapterUrl the url of the chapter.
      * @return an observable of the list of pages.
      */
     fun getPageListFromCache(chapterUrl: String): Observable<List<Page>> {
         return Observable.fromCallable<List<Page>> {
             // Get the key for the chapter.
-            val key = DiskUtils.hashKeyForDisk(chapterUrl)
+            val key = DiskUtil.hashKeyForDisk(chapterUrl)
 
             // Convert JSON string to list of objects. Throws an exception if snapshot is null
             diskCache.get(key).use {
-                gson.fromJson(it.getString(0), pageListCollection)
+                gson.fromJson<List<Page>>(it.getString(0))
             }
         }
     }
 
     /**
      * Add page list to disk cache.
+     *
      * @param chapterUrl the url of the chapter.
      * @param pages list of pages.
      */
@@ -130,7 +122,7 @@ class ChapterCache(private val context: Context) {
 
         try {
             // Get editor from md5 key.
-            val key = DiskUtils.hashKeyForDisk(chapterUrl)
+            val key = DiskUtil.hashKeyForDisk(chapterUrl)
             editor = diskCache.edit(key) ?: return
 
             // Write chapter urls to cache.
@@ -151,51 +143,50 @@ class ChapterCache(private val context: Context) {
     }
 
     /**
-     * Check if image is in cache.
+     * Returns true if image is in cache.
+     *
      * @param imageUrl url of image.
      * @return true if in cache otherwise false.
      */
     fun isImageInCache(imageUrl: String): Boolean {
         try {
-            return diskCache.get(DiskUtils.hashKeyForDisk(imageUrl)) != null
+            return diskCache.get(DiskUtil.hashKeyForDisk(imageUrl)) != null
         } catch (e: IOException) {
             return false
         }
     }
 
     /**
-     * Get image path from url.
+     * Get image file from url.
+     *
      * @param imageUrl url of image.
      * @return path of image.
      */
-    fun getImagePath(imageUrl: String): String? {
-        try {
-            // Get file from md5 key.
-            val imageName = DiskUtils.hashKeyForDisk(imageUrl) + ".0"
-            return File(diskCache.directory, imageName).canonicalPath
-        } catch (e: IOException) {
-            return null
-        }
+    fun getImageFile(imageUrl: String): File {
+        // Get file from md5 key.
+        val imageName = DiskUtil.hashKeyForDisk(imageUrl) + ".0"
+        return File(diskCache.directory, imageName)
     }
 
     /**
      * Add image to cache.
+     * 
      * @param imageUrl url of image.
      * @param response http response from page.
      * @throws IOException image error.
      */
     @Throws(IOException::class)
-    fun putImageToCache(imageUrl: String, response: Response, reencode: Boolean) {
+    fun putImageToCache(imageUrl: String, response: Response) {
         // Initialize editor (edits the values for an entry).
         var editor: DiskLruCache.Editor? = null
 
         try {
             // Get editor from md5 key.
-            val key = DiskUtils.hashKeyForDisk(imageUrl)
+            val key = DiskUtil.hashKeyForDisk(imageUrl)
             editor = diskCache.edit(key) ?: throw IOException("Unable to edit key")
 
             // Get OutputStream and write image with Okio.
-            response.body().source().saveImageTo(editor.newOutputStream(0), reencode)
+            response.body().source().saveTo(editor.newOutputStream(0))
 
             diskCache.flush()
             editor.commit()

app/src/main/java/eu/kanade/tachiyomi/data/cache/CoverCache.kt

@@ -1,7 +1,7 @@
 package eu.kanade.tachiyomi.data.cache
 
 import android.content.Context
-import eu.kanade.tachiyomi.util.DiskUtils
+import eu.kanade.tachiyomi.util.DiskUtil
 import java.io.File
 import java.io.IOException
 import java.io.InputStream
@@ -29,7 +29,7 @@ class CoverCache(private val context: Context) {
      * @return cover image.
      */
     fun getCoverFile(thumbnailUrl: String): File {
-        return File(cacheDir, DiskUtils.hashKeyForDisk(thumbnailUrl))
+        return File(cacheDir, DiskUtil.hashKeyForDisk(thumbnailUrl))
     }
 
     /**

app/src/main/java/eu/kanade/tachiyomi/data/database/DbOpenHelper.kt

@@ -17,7 +17,7 @@ class DbOpenHelper(context: Context)
         /**
          * Version of the database.
          */
-        const val DATABASE_VERSION = 3
+        const val DATABASE_VERSION = 4
     }
 
     override fun onCreate(db: SQLiteDatabase) = with(db) {
@@ -48,6 +48,9 @@ class DbOpenHelper(context: Context)
             db.execSQL(HistoryTable.createTableQuery)
             db.execSQL(HistoryTable.createChapterIdIndexQuery)
         }
+        if (oldVersion < 4) {
+            db.execSQL(ChapterTable.bookmarkUpdateQuery)
+        }
     }
 
     override fun onConfigure(db: SQLiteDatabase) {

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/ChapterTypeMapping.kt

@@ -11,6 +11,7 @@ import com.pushtorefresh.storio.sqlite.queries.InsertQuery
 import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.ChapterImpl
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_BOOKMARK
 import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_CHAPTER_NUMBER
 import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_DATE_FETCH
 import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_DATE_UPLOAD
@@ -41,12 +42,13 @@ class ChapterPutResolver : DefaultPutResolver<Chapter>() {
             .whereArgs(obj.id)
             .build()
 
-    override fun mapToContentValues(obj: Chapter) = ContentValues(10).apply {
+    override fun mapToContentValues(obj: Chapter) = ContentValues(11).apply {
         put(COL_ID, obj.id)
         put(COL_MANGA_ID, obj.manga_id)
         put(COL_URL, obj.url)
         put(COL_NAME, obj.name)
         put(COL_READ, obj.read)
+        put(COL_BOOKMARK, obj.bookmark)
         put(COL_DATE_FETCH, obj.date_fetch)
         put(COL_DATE_UPLOAD, obj.date_upload)
         put(COL_LAST_PAGE_READ, obj.last_page_read)
@@ -63,6 +65,7 @@ class ChapterGetResolver : DefaultGetResolver<Chapter>() {
         url = cursor.getString(cursor.getColumnIndex(COL_URL))
         name = cursor.getString(cursor.getColumnIndex(COL_NAME))
         read = cursor.getInt(cursor.getColumnIndex(COL_READ)) == 1
+        bookmark = cursor.getInt(cursor.getColumnIndex(COL_BOOKMARK)) == 1
         date_fetch = cursor.getLong(cursor.getColumnIndex(COL_DATE_FETCH))
         date_upload = cursor.getLong(cursor.getColumnIndex(COL_DATE_UPLOAD))
         last_page_read = cursor.getInt(cursor.getColumnIndex(COL_LAST_PAGE_READ))

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Chapter.kt

@@ -14,6 +14,8 @@ interface Chapter : Serializable {
 
     var read: Boolean
 
+    var bookmark: Boolean
+
     var last_page_read: Int
 
     var date_fetch: Long

app/src/main/java/eu/kanade/tachiyomi/data/database/models/ChapterImpl.kt

@@ -12,6 +12,8 @@ class ChapterImpl : Chapter {
 
     override var read: Boolean = false
 
+    override var bookmark: Boolean = false
+
     override var last_page_read: Int = 0
 
     override var date_fetch: Long = 0

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt

@@ -84,6 +84,10 @@ interface Manga : Serializable {
         get() = chapter_flags and DOWNLOADED_MASK
         set(filter) = setFlags(filter, DOWNLOADED_MASK)
 
+    var bookmarkedFilter: Int
+        get() = chapter_flags and BOOKMARKED_MASK
+        set(filter) = setFlags(filter, BOOKMARKED_MASK)
+
     var sorting: Int
         get() = chapter_flags and SORTING_MASK
         set(sort) = setFlags(sort, SORTING_MASK)
@@ -110,6 +114,10 @@ interface Manga : Serializable {
         const val SHOW_NOT_DOWNLOADED = 0x00000010
         const val DOWNLOADED_MASK = 0x00000018
 
+        const val SHOW_BOOKMARKED = 0x00000020
+        const val SHOW_NOT_BOOKMARKED = 0x00000040
+        const val BOOKMARKED_MASK = 0x00000060
+
         const val SORTING_SOURCE = 0x00000000
         const val SORTING_NUMBER = 0x00000100
         const val SORTING_MASK = 0x00000100

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/ChapterQueries.kt

@@ -33,6 +33,15 @@ interface ChapterQueries : DbProvider {
             .withGetResolver(MangaChapterGetResolver.INSTANCE)
             .prepare()
 
+    fun getChapter(id: Long) = db.get()
+            .`object`(Chapter::class.java)
+            .withQuery(Query.builder()
+                    .table(ChapterTable.TABLE)
+                    .where("${ChapterTable.COL_ID} = ?")
+                    .whereArgs(id)
+                    .build())
+            .prepare()
+
     fun insertChapter(chapter: Chapter) = db.put().`object`(chapter).prepare()
 
     fun insertChapters(chapters: List<Chapter>) = db.put().objects(chapters).prepare()

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/ChapterProgressPutResolver.kt

@@ -25,8 +25,9 @@ class ChapterProgressPutResolver : PutResolver<Chapter>() {
             .whereArgs(chapter.id)
             .build()
 
-    fun mapToContentValues(chapter: Chapter) = ContentValues(2).apply {
+    fun mapToContentValues(chapter: Chapter) = ContentValues(3).apply {
         put(ChapterTable.COL_READ, chapter.read)
+        put(ChapterTable.COL_BOOKMARK, chapter.bookmark)
         put(ChapterTable.COL_LAST_PAGE_READ, chapter.last_page_read)
     }
 

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/ChapterTable.kt

@@ -14,6 +14,8 @@ object ChapterTable {
 
     const val COL_READ = "read"
 
+    const val COL_BOOKMARK = "bookmark"
+
     const val COL_DATE_FETCH = "date_fetch"
 
     const val COL_DATE_UPLOAD = "date_upload"
@@ -31,6 +33,7 @@ object ChapterTable {
             $COL_URL TEXT NOT NULL,
             $COL_NAME TEXT NOT NULL,
             $COL_READ BOOLEAN NOT NULL,
+            $COL_BOOKMARK BOOLEAN NOT NULL,
             $COL_LAST_PAGE_READ INT NOT NULL,
             $COL_CHAPTER_NUMBER FLOAT NOT NULL,
             $COL_SOURCE_ORDER INTEGER NOT NULL,
@@ -46,4 +49,7 @@ object ChapterTable {
     val sourceOrderUpdateQuery: String
         get() = "ALTER TABLE $TABLE ADD COLUMN $COL_SOURCE_ORDER INTEGER DEFAULT 0"
 
+    val bookmarkUpdateQuery: String
+        get() = "ALTER TABLE $TABLE ADD COLUMN $COL_BOOKMARK BOOLEAN DEFAULT FALSE"
+
 }

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadManager.kt

@@ -1,450 +1,154 @@
 package eu.kanade.tachiyomi.data.download
 
 import android.content.Context
-import android.net.Uri
-import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
-import com.google.gson.stream.JsonReader
-import eu.kanade.tachiyomi.R
+import com.hippo.unifile.UniFile
+import com.jakewharton.rxrelay.BehaviorRelay
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
-import eu.kanade.tachiyomi.data.download.model.Download
 import eu.kanade.tachiyomi.data.download.model.DownloadQueue
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
-import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.data.source.Source
-import eu.kanade.tachiyomi.data.source.SourceManager
 import eu.kanade.tachiyomi.data.source.model.Page
-import eu.kanade.tachiyomi.data.source.online.OnlineSource
-import eu.kanade.tachiyomi.util.*
 import rx.Observable
-import rx.Subscription
-import rx.android.schedulers.AndroidSchedulers
-import rx.schedulers.Schedulers
-import rx.subjects.BehaviorSubject
-import rx.subjects.PublishSubject
-import timber.log.Timber
-import uy.kohesive.injekt.Injekt
-import uy.kohesive.injekt.api.get
-import java.io.File
-import java.io.FileReader
-import java.util.*
-
-class DownloadManager(
-        private val context: Context,
-        private val sourceManager: SourceManager = Injekt.get(),
-        private val preferences: PreferencesHelper = Injekt.get()
-) {
-
-    private val gson = Gson()
-
-    private val downloadsQueueSubject = PublishSubject.create<List<Download>>()
-    val runningSubject = BehaviorSubject.create<Boolean>()
-    private var downloadsSubscription: Subscription? = null
-
-    val downloadNotifier by lazy { DownloadNotifier(context) }
-
-    private val threadsSubject = BehaviorSubject.create<Int>()
-    private var threadsSubscription: Subscription? = null
-
-    val queue = DownloadQueue()
-
-    val imageFilenameRegex = "[^\\sa-zA-Z0-9.-]".toRegex()
-
-    val PAGE_LIST_FILE = "index.json"
-
-    @Volatile var isRunning: Boolean = false
-        private set
-
-    private fun initializeSubscriptions() {
-
-        downloadsSubscription?.unsubscribe()
-
-        threadsSubscription = preferences.downloadThreads().asObservable()
-                .subscribe {
-                    threadsSubject.onNext(it)
-                    downloadNotifier.multipleDownloadThreads = it > 1
-                }
-
-        downloadsSubscription = downloadsQueueSubject.flatMap { Observable.from(it) }
-                .lift(DynamicConcurrentMergeOperator<Download, Download>({ downloadChapter(it) }, threadsSubject))
-                .onBackpressureBuffer()
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe({
-                    // Delete successful downloads from queue
-                    if (it.status == Download.DOWNLOADED) {
-                        // remove downloaded chapter from queue
-                        queue.del(it)
-                        downloadNotifier.onProgressChange(queue)
-                    }
-                    if (areAllDownloadsFinished()) {
-                        DownloadService.stop(context)
-                    }
-                }, { error ->
-                    DownloadService.stop(context)
-                    Timber.e(error)
-                    downloadNotifier.onError(error.message)
-                })
-
-        if (!isRunning) {
-            isRunning = true
-            runningSubject.onNext(true)
-        }
-    }
-
-    fun destroySubscriptions() {
-        if (isRunning) {
-            isRunning = false
-            runningSubject.onNext(false)
-        }
-
-        if (downloadsSubscription != null) {
-            downloadsSubscription?.unsubscribe()
-            downloadsSubscription = null
-        }
-
-        if (threadsSubscription != null) {
-            threadsSubscription?.unsubscribe()
-        }
-
-    }
-
-    // Create a download object for every chapter and add them to the downloads queue
-    fun downloadChapters(manga: Manga, chapters: List<Chapter>) {
-        val source = sourceManager.get(manga.source) as? OnlineSource ?: return
-
-        // Add chapters to queue from the start
-        val sortedChapters = chapters.sortedByDescending { it.source_order }
-
-        // Used to avoid downloading chapters with the same name
-        val addedChapters = ArrayList<String>()
-        val pending = ArrayList<Download>()
-
-        for (chapter in sortedChapters) {
-            if (addedChapters.contains(chapter.name))
-                continue
-
-            addedChapters.add(chapter.name)
-            val download = Download(source, manga, chapter)
-
-            if (!prepareDownload(download)) {
-                queue.add(download)
-                pending.add(download)
-            }
-        }
-
-        // Initialize queue size
-        downloadNotifier.initialQueueSize = queue.size
-        // Show notification
-        downloadNotifier.onProgressChange(queue)
-
-        if (isRunning) downloadsQueueSubject.onNext(pending)
-    }
-
-    // Public method to check if a chapter is downloaded
-    fun isChapterDownloaded(source: Source, manga: Manga, chapter: Chapter): Boolean {
-        val directory = getAbsoluteChapterDirectory(source, manga, chapter)
-        if (!directory.exists())
-            return false
-
-        val pages = getSavedPageList(source, manga, chapter)
-        return isChapterDownloaded(directory, pages)
-    }
-
-    // Prepare the download. Returns true if the chapter is already downloaded
-    private fun prepareDownload(download: Download): Boolean {
-        // If the chapter is already queued, don't add it again
-        for (queuedDownload in queue) {
-            if (download.chapter.id == queuedDownload.chapter.id)
-                return true
-        }
-
-        // Add the directory to the download object for future access
-        download.directory = getAbsoluteChapterDirectory(download)
-
-        // If the directory doesn't exist, the chapter isn't downloaded.
-        if (!download.directory.exists()) {
-            return false
-        }
-
-        // If the page list doesn't exist, the chapter isn't downloaded
-        val savedPages = getSavedPageList(download) ?: return false
-
-        // Add the page list to the download object for future access
-        download.pages = savedPages
-
-        // If the number of files matches the number of pages, the chapter is downloaded.
-        // We have the index file, so we check one file more
-        return isChapterDownloaded(download.directory, download.pages)
-    }
-
-    // Check that all the images are downloaded
-    private fun isChapterDownloaded(directory: File, pages: List<Page>?): Boolean {
-        return pages != null && !pages.isEmpty() && pages.size + 1 == directory.listFiles().size
-    }
-
-    // Download the entire chapter
-    private fun downloadChapter(download: Download): Observable<Download> {
-        DiskUtils.createDirectory(download.directory)
-
-        val pageListObservable: Observable<List<Page>> = if (download.pages == null)
-            // Pull page list from network and add them to download object
-            download.source.fetchPageListFromNetwork(download.chapter)
-                    .doOnNext { pages ->
-                        download.pages = pages
-                        savePageList(download)
-                    }
-        else
-        // Or if the page list already exists, start from the file
-            Observable.just(download.pages)
-
-        return Observable.defer {
-            pageListObservable
-                    .doOnNext { pages ->
-                        download.downloadedImages = 0
-                        download.status = Download.DOWNLOADING
-                    }
-                    // Get all the URLs to the source images, fetch pages if necessary
-                    .flatMap { download.source.fetchAllImageUrlsFromPageList(it) }
-                    // Start downloading images, consider we can have downloaded images already
-                    .concatMap { page -> getOrDownloadImage(page, download) }
-                    // Do when page is downloaded.
-                    .doOnNext {
-                        downloadNotifier.onProgressChange(download, queue)
-                    }
-                    // Do after download completes
-                    .doOnCompleted { onDownloadCompleted(download) }
-                    .toList()
-                    .map { pages -> download }
-                    // If the page list threw, it will resume here
-                    .onErrorResumeNext { error ->
-                        download.status = Download.ERROR
-                        downloadNotifier.onError(error.message, download.chapter.name)
-                        Observable.just(download)
-                    }
-        }.subscribeOn(Schedulers.io())
-    }
-
-    // Get the image from the filesystem if it exists or download from network
-    private fun getOrDownloadImage(page: Page, download: Download): Observable<Page> {
-        // If the image URL is empty, do nothing
-        if (page.imageUrl == null)
-            return Observable.just(page)
-
-        val filename = getImageFilename(page)
-        val imagePath = File(download.directory, filename)
-
-        // If the image is already downloaded, do nothing. Otherwise download from network
-        val pageObservable = if (isImageDownloaded(imagePath))
-            Observable.just(page)
-        else
-            downloadImage(page, download.source, download.directory, filename)
-
-        return pageObservable
-                // When the image is ready, set image path, progress (just in case) and status
-                .doOnNext {
-                    page.imagePath = imagePath.absolutePath
-                    page.progress = 100
-                    download.downloadedImages++
-                    page.status = Page.READY
-                }
-                // Mark this page as error and allow to download the remaining
-                .onErrorResumeNext {
-                    page.progress = 0
-                    page.status = Page.ERROR
-                    Observable.just(page)
-                }
-    }
-
-    // Save image on disk
-    private fun downloadImage(page: Page, source: OnlineSource, directory: File, filename: String): Observable<Page> {
-        page.status = Page.DOWNLOAD_IMAGE
-        return source.imageResponse(page)
-                .map {
-                    val file = File(directory, filename)
-                    try {
-                        file.parentFile.mkdirs()
-                        it.body().source().saveImageTo(file.outputStream(), preferences.reencodeImage())
-                    } catch (e: Exception) {
-                        it.close()
-                        file.delete()
-                        throw e
-                    }
-                    page
-                }
-                // Retry 3 times, waiting 2, 4 and 8 seconds between attempts.
-                .retryWhen(RetryWithDelay(3, { (2 shl it - 1) * 1000 }, Schedulers.trampoline()))
-    }
-
-    // Public method to get the image from the filesystem. It does NOT provide any way to download the image
-    fun getDownloadedImage(page: Page, chapterDir: File): Observable<Page> {
-        if (page.imageUrl == null) {
-            page.status = Page.ERROR
-            return Observable.just(page)
-        }
-
-        val imagePath = File(chapterDir, getImageFilename(page))
-
-        // When the image is ready, set image path, progress (just in case) and status
-        if (isImageDownloaded(imagePath)) {
-            page.imagePath = imagePath.absolutePath
-            page.progress = 100
-            page.status = Page.READY
-        } else {
-            page.status = Page.ERROR
-        }
-        return Observable.just(page)
-    }
-
-    // Get the filename for an image given the page
-    private fun getImageFilename(page: Page): String {
-        val url = page.imageUrl
-        val number = String.format("%03d", page.pageNumber + 1)
-
-        // Try to preserve file extension
-        return when {
-            UrlUtil.isJpg(url) -> "$number.jpg"
-            UrlUtil.isPng(url) -> "$number.png"
-            UrlUtil.isGif(url) -> "$number.gif"
-            else -> Uri.parse(url).lastPathSegment.replace(imageFilenameRegex, "_")
-        }
-    }
-
-    private fun isImageDownloaded(imagePath: File): Boolean {
-        return imagePath.exists()
-    }
-
-    // Called when a download finishes. This doesn't mean the download was successful, so we check it
-    private fun onDownloadCompleted(download: Download) {
-        checkDownloadIsSuccessful(download)
-        savePageList(download)
-    }
-
-    private fun checkDownloadIsSuccessful(download: Download) {
-        var actualProgress = 0
-        var status = Download.DOWNLOADED
-        // If any page has an error, the download result will be error
-        for (page in download.pages!!) {
-            actualProgress += page.progress
-            if (page.status != Page.READY) {
-                status = Download.ERROR
-                downloadNotifier.onError(context.getString(R.string.download_notifier_page_ready_error), download.chapter.name)
-            }
-        }
-        // Ensure that the chapter folder has all the images
-        if (!isChapterDownloaded(download.directory, download.pages)) {
-            status = Download.ERROR
-            downloadNotifier.onError(context.getString(R.string.download_notifier_page_error), download.chapter.name)
-        }
-        download.totalProgress = actualProgress
-        download.status = status
-    }
-
-    // Return the page list from the chapter's directory if it exists, null otherwise
-    fun getSavedPageList(source: Source, manga: Manga, chapter: Chapter): List<Page>? {
-        val chapterDir = getAbsoluteChapterDirectory(source, manga, chapter)
-        val pagesFile = File(chapterDir, PAGE_LIST_FILE)
-
-        return try {
-            JsonReader(FileReader(pagesFile)).use {
-                val collectionType = object : TypeToken<List<Page>>() {}.type
-                gson.fromJson(it, collectionType)
-            }
-        } catch (e: Exception) {
-            null
-        }
-    }
-
-    // Shortcut for the method above
-    private fun getSavedPageList(download: Download): List<Page>? {
-        return getSavedPageList(download.source, download.manga, download.chapter)
-    }
-
-    // Save the page list to the chapter's directory
-    fun savePageList(source: Source, manga: Manga, chapter: Chapter, pages: List<Page>) {
-        val chapterDir = getAbsoluteChapterDirectory(source, manga, chapter)
-        val pagesFile = File(chapterDir, PAGE_LIST_FILE)
-
-        pagesFile.outputStream().use {
-            try {
-                it.write(gson.toJson(pages).toByteArray())
-                it.flush()
-            } catch (error: Exception) {
-                Timber.e(error)
-            }
-        }
-    }
-
-    // Shortcut for the method above
-    private fun savePageList(download: Download) {
-        savePageList(download.source, download.manga, download.chapter, download.pages!!)
-    }
-
-    fun getAbsoluteMangaDirectory(source: Source, manga: Manga): File {
-        val mangaRelativePath = source.toString() +
-                File.separator +
-                manga.title.replace("[^\\sa-zA-Z0-9.-]".toRegex(), "_")
-
-        return File(preferences.downloadsDirectory().getOrDefault(), mangaRelativePath)
-    }
-
-    // Get the absolute path to the chapter directory
-    fun getAbsoluteChapterDirectory(source: Source, manga: Manga, chapter: Chapter): File {
-        val chapterRelativePath = chapter.name.replace("[^\\sa-zA-Z0-9.-]".toRegex(), "_")
-
-        return File(getAbsoluteMangaDirectory(source, manga), chapterRelativePath)
-    }
-
-    // Shortcut for the method above
-    private fun getAbsoluteChapterDirectory(download: Download): File {
-        return getAbsoluteChapterDirectory(download.source, download.manga, download.chapter)
-    }
-
-    fun deleteChapter(source: Source, manga: Manga, chapter: Chapter) {
-        val path = getAbsoluteChapterDirectory(source, manga, chapter)
-        DiskUtils.deleteFiles(path)
-    }
-
-    fun areAllDownloadsFinished(): Boolean {
-        for (download in queue) {
-            if (download.status <= Download.DOWNLOADING)
-                return false
-        }
-        return true
-    }
 
+/**
+ * This class is used to manage chapter downloads in the application. It must be instantiated once
+ * and retrieved through dependency injection. You can use this class to queue new chapters or query
+ * downloaded chapters.
+ *
+ * @param context the application context.
+ */
+class DownloadManager(context: Context) {
+
+    /**
+     * Downloads provider, used to retrieve the folders where the chapters are or should be stored.
+     */
+    private val provider = DownloadProvider(context)
+
+    /**
+     * Downloader whose only task is to download chapters.
+     */
+    private val downloader = Downloader(context, provider)
+
+    /**
+     * Downloads queue, where the pending chapters are stored.
+     */
+    val queue: DownloadQueue
+        get() = downloader.queue
+
+    /**
+     * Subject for subscribing to downloader status.
+     */
+    val runningRelay: BehaviorRelay<Boolean>
+        get() = downloader.runningRelay
+
+    /**
+     * Tells the downloader to begin downloads.
+     *
+     * @return true if it's started, false otherwise (empty queue).
+     */
     fun startDownloads(): Boolean {
-        if (queue.isEmpty())
-            return false
-
-        if (downloadsSubscription == null || downloadsSubscription!!.isUnsubscribed)
-            initializeSubscriptions()
-
-        val pending = ArrayList<Download>()
-        for (download in queue) {
-            if (download.status != Download.DOWNLOADED) {
-                if (download.status != Download.QUEUE) download.status = Download.QUEUE
-                pending.add(download)
-            }
-        }
-        downloadsQueueSubject.onNext(pending)
-
-        return !pending.isEmpty()
+        return downloader.start()
     }
 
-    fun stopDownloads(errorMessage: String? = null) {
-        destroySubscriptions()
-        for (download in queue) {
-            if (download.status == Download.DOWNLOADING) {
-                download.status = Download.ERROR
-            }
-        }
-        errorMessage?.let { downloadNotifier.onError(it) }
+    /**
+     * Tells the downloader to stop downloads.
+     *
+     * @param reason an optional reason for being stopped, used to notify the user.
+     */
+    fun stopDownloads(reason: String? = null) {
+        downloader.stop(reason)
     }
 
+    /**
+     * Empties the download queue.
+     */
     fun clearQueue() {
-        queue.clear()
-        downloadNotifier.onClear()
+        downloader.clearQueue()
+    }
+
+    /**
+     * Tells the downloader to enqueue the given list of chapters.
+     *
+     * @param manga the manga of the chapters.
+     * @param chapters the list of chapters to enqueue.
+     */
+    fun downloadChapters(manga: Manga, chapters: List<Chapter>) {
+        downloader.queueChapters(manga, chapters)
+    }
+
+    /**
+     * Builds the page list of a downloaded chapter.
+     *
+     * @param source the source of the chapter.
+     * @param manga the manga of the chapter.
+     * @param chapter the downloaded chapter.
+     * @return an observable containing the list of pages from the chapter.
+     */
+    fun buildPageList(source: Source, manga: Manga, chapter: Chapter): Observable<List<Page>> {
+        return buildPageList(provider.findChapterDir(source, manga, chapter))
+    }
+
+    /**
+     * Builds the page list of a downloaded chapter.
+     *
+     * @param chapterDir the file where the chapter is downloaded.
+     * @return an observable containing the list of pages from the chapter.
+     */
+    private fun buildPageList(chapterDir: UniFile?): Observable<List<Page>> {
+        return Observable.fromCallable {
+            val files = chapterDir?.listFiles().orEmpty()
+                    .filter { "image" in it.type.orEmpty() }
+
+            if (files.isEmpty()) {
+                throw Exception("Page list is empty")
+            }
+
+            files.sortedBy { it.name }
+                    .mapIndexed { i, file ->
+                        Page(i, uri = file.uri).apply { status = Page.READY }
+                    }
+        }
+    }
+
+    /**
+     * Returns the directory name for the given chapter.
+     *
+     * @param chapter the chapter to query.
+     */
+    fun getChapterDirName(chapter: Chapter): String {
+        return provider.getChapterDirName(chapter)
+    }
+
+    /**
+     * Returns the directory for the given manga, if it exists.
+     *
+     * @param source the source of the manga.
+     * @param manga the manga to query.
+     */
+    fun findMangaDir(source: Source, manga: Manga): UniFile? {
+        return provider.findMangaDir(source, manga)
+    }
+
+    /**
+     * Returns the directory for the given chapter, if it exists.
+     *
+     * @param source the source of the chapter.
+     * @param manga the manga of the chapter.
+     * @param chapter the chapter to query.
+     */
+    fun findChapterDir(source: Source, manga: Manga, chapter: Chapter): UniFile? {
+        return provider.findChapterDir(source, manga, chapter)
+    }
+
+    /**
+     * Deletes the directory of a downloaded chapter.
+     *
+     * @param source the source of the chapter.
+     * @param manga the manga of the chapter.
+     * @param chapter the chapter to delete.
+     */
+    fun deleteChapter(source: Source, manga: Manga, chapter: Chapter) {
+        provider.findChapterDir(source, manga, chapter)?.delete()
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadNotifier.kt

@@ -1,11 +1,13 @@
 package eu.kanade.tachiyomi.data.download
 
 import android.content.Context
+import android.graphics.BitmapFactory
 import android.support.v4.app.NotificationCompat
 import eu.kanade.tachiyomi.Constants
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.download.model.Download
 import eu.kanade.tachiyomi.data.download.model.DownloadQueue
+import eu.kanade.tachiyomi.util.chop
 import eu.kanade.tachiyomi.util.notificationManager
 
 /**
@@ -13,17 +15,14 @@ import eu.kanade.tachiyomi.util.notificationManager
  *
  * @param context context of application
  */
-class DownloadNotifier(private val context: Context) {
+internal class DownloadNotifier(private val context: Context) {
     /**
      * Notification builder.
      */
-    private val notificationBuilder = NotificationCompat.Builder(context)
-
-    /**
-     * Id of the notification.
-     */
-    private val notificationId: Int
-        get() = Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ID
+    private val notification by lazy {
+        NotificationCompat.Builder(context)
+                .setLargeIcon(BitmapFactory.decodeResource(context.resources, R.mipmap.ic_launcher))
+    }
 
     /**
      * Status of download. Used for correct notification icon.
@@ -33,12 +32,29 @@ class DownloadNotifier(private val context: Context) {
     /**
      * The size of queue on start download.
      */
-    internal var initialQueueSize = 0
+    var initialQueueSize = 0
 
     /**
      * Simultaneous download setting > 1.
      */
-    internal var multipleDownloadThreads = false
+    var multipleDownloadThreads = false
+
+    /**
+     * Shows a notification from this builder.
+     *
+     * @param id the id of the notification.
+     */
+    private fun NotificationCompat.Builder.show(id: Int = Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ID) {
+        context.notificationManager.notify(id, build())
+    }
+
+    /**
+     * Dismiss the downloader's notification. Downloader error notifications use a different id, so
+     * those can only be dismissed by the user.
+     */
+    fun dismiss() {
+        context.notificationManager.cancel(Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ID)
+    }
 
     /**
      * Called when download progress changes.
@@ -46,47 +62,47 @@ class DownloadNotifier(private val context: Context) {
      *
      * @param queue the queue containing downloads.
      */
-    internal fun onProgressChange(queue: DownloadQueue) {
+    fun onProgressChange(queue: DownloadQueue) {
         if (multipleDownloadThreads) {
             doOnProgressChange(null, queue)
         }
     }
 
     /**
-     * Called when download progress changes
-     * Note: Only accepted when single download active
+     * Called when download progress changes.
+     * Note: Only accepted when single download active.
      *
-     * @param download download object containing download information
-     * @param queue the queue containing downloads
+     * @param download download object containing download information.
+     * @param queue the queue containing downloads.
      */
-    internal fun onProgressChange(download: Download, queue: DownloadQueue) {
+    fun onProgressChange(download: Download, queue: DownloadQueue) {
         if (!multipleDownloadThreads) {
             doOnProgressChange(download, queue)
         }
     }
 
     /**
-     * Show notification progress of chapter
+     * Show notification progress of chapter.
      *
-     * @param download download object containing download information
-     * @param queue the queue containing downloads
+     * @param download download object containing download information.
+     * @param queue the queue containing downloads.
      */
     private fun doOnProgressChange(download: Download?, queue: DownloadQueue) {
         // Check if download is completed
         if (multipleDownloadThreads) {
             if (queue.isEmpty()) {
-                onComplete(null)
+                onChapterCompleted(null)
                 return
             }
         } else {
             if (download != null && download.pages!!.size == download.downloadedImages) {
-                onComplete(download)
+                onChapterCompleted(download)
                 return
             }
         }
 
         // Create notification
-        with (notificationBuilder) {
+        with(notification) {
             // Check if icon needs refresh
             if (!isDownloading) {
                 setSmallIcon(android.R.drawable.stat_sys_download)
@@ -105,11 +121,7 @@ class DownloadNotifier(private val context: Context) {
                 setProgress(initialQueueSize, initialQueueSize - queue.size, false)
             } else {
                 download?.let {
-                    if (it.chapter.name.length >= 33)
-                        setContentTitle(it.chapter.name.slice(IntRange(0, 30)).plus("..."))
-                    else
-                        setContentTitle(it.chapter.name)
-
+                    setContentTitle(it.chapter.name.chop(30))
                     setContentText(context.getString(R.string.chapter_downloading_progress)
                             .format(it.downloadedImages, it.pages!!.size))
                     setProgress(it.pages!!.size, it.downloadedImages, false)
@@ -118,17 +130,17 @@ class DownloadNotifier(private val context: Context) {
             }
         }
         // Displays the progress bar on notification
-        context.notificationManager.notify(notificationId, notificationBuilder.build())
+        notification.show()
     }
 
     /**
-     * Called when chapter is downloaded
+     * Called when chapter is downloaded.
      *
-     * @param download download object containing download information
+     * @param download download object containing download information.
      */
-    private fun onComplete(download: Download?) {
+    private fun onChapterCompleted(download: Download?) {
         // Create notification.
-        with(notificationBuilder) {
+        with(notification) {
             setContentTitle(download?.chapter?.name ?: context.getString(R.string.app_name))
             setContentText(context.getString(R.string.update_check_notification_download_complete))
             setSmallIcon(android.R.drawable.stat_sys_download_done)
@@ -136,7 +148,7 @@ class DownloadNotifier(private val context: Context) {
         }
 
         // Show notification.
-        context.notificationManager.notify(notificationId, notificationBuilder.build())
+        notification.show()
 
         // Reset initial values
         isDownloading = false
@@ -144,30 +156,38 @@ class DownloadNotifier(private val context: Context) {
     }
 
     /**
-     * Clears the notification message
+     * Called when the downloader receives a warning.
+     *
+     * @param reason the text to show.
      */
-    internal fun onClear() {
-        context.notificationManager.cancel(notificationId)
+    fun onWarning(reason: String) {
+        with(notification) {
+            setContentTitle(context.getString(R.string.download_notifier_downloader_title))
+            setContentText(reason)
+            setSmallIcon(android.R.drawable.stat_sys_warning)
+            setProgress(0, 0, false)
+        }
+        notification.show()
     }
 
     /**
-     * Called on error while downloading chapter
+     * Called when the downloader receives an error. It's shown as a separate notification to avoid
+     * being overwritten.
      *
-     * @param error string containing error information
-     * @param chapter string containing chapter title
+     * @param error string containing error information.
+     * @param chapter string containing chapter title.
      */
-    internal fun onError(error: String? = null, chapter: String? = null) {
+    fun onError(error: String? = null, chapter: String? = null) {
         // Create notification
-        with(notificationBuilder) {
-            setContentTitle(chapter ?: context.getString(R.string.download_notifier_title_error))
+        with(notification) {
+            setContentTitle(chapter ?: context.getString(R.string.download_notifier_downloader_title))
             setContentText(error ?: context.getString(R.string.download_notifier_unkown_error))
             setSmallIcon(android.R.drawable.stat_sys_warning)
             setProgress(0, 0, false)
         }
-        context.notificationManager.notify(Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID, notificationBuilder.build())
+        notification.show(Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID)
 
         // Reset download information
-        onClear()
         isDownloading = false
     }
 }

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt

@@ -0,0 +1,98 @@
+package eu.kanade.tachiyomi.data.download
+
+import android.content.Context
+import android.net.Uri
+import com.hippo.unifile.UniFile
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.source.Source
+import eu.kanade.tachiyomi.util.DiskUtil
+import uy.kohesive.injekt.injectLazy
+
+/**
+ * This class is used to provide the directories where the downloads should be saved.
+ * It uses the following path scheme: /<root downloads dir>/<source name>/<manga>/<chapter>
+ *
+ * @param context the application context.
+ */
+class DownloadProvider(private val context: Context) {
+
+    /**
+     * Preferences helper.
+     */
+    private val preferences: PreferencesHelper by injectLazy()
+
+    /**
+     * The root directory for downloads.
+     */
+    private lateinit var downloadsDir: UniFile
+
+    init {
+        preferences.downloadsDirectory().asObservable()
+                .subscribe { downloadsDir = UniFile.fromUri(context, Uri.parse(it)) }
+    }
+
+    /**
+     * Returns the download directory for a manga. For internal use only.
+     *
+     * @param source the source of the manga.
+     * @param manga the manga to query.
+     */
+    internal fun getMangaDir(source: Source, manga: Manga): UniFile {
+        return downloadsDir
+                .createDirectory(getSourceDirName(source))
+                .createDirectory(getMangaDirName(manga))
+    }
+
+    /**
+     * Returns the download directory for a manga if it exists.
+     *
+     * @param source the source of the manga.
+     * @param manga the manga to query.
+     */
+    fun findMangaDir(source: Source, manga: Manga): UniFile? {
+        val sourceDir = downloadsDir.findFile(getSourceDirName(source))
+        return sourceDir?.findFile(getMangaDirName(manga))
+    }
+
+    /**
+     * Returns the download directory for a chapter if it exists.
+     *
+     * @param source the source of the chapter.
+     * @param manga the manga of the chapter.
+     * @param chapter the chapter to query.
+     */
+    fun findChapterDir(source: Source, manga: Manga, chapter: Chapter): UniFile? {
+        val mangaDir = findMangaDir(source, manga)
+        return mangaDir?.findFile(getChapterDirName(chapter))
+    }
+
+    /**
+     * Returns the download directory name for a source.
+     *
+     * @param source the source to query.
+     */
+    fun getSourceDirName(source: Source): String {
+        return source.toString()
+    }
+
+    /**
+     * Returns the download directory name for a manga.
+     *
+     * @param manga the manga to query.
+     */
+    fun getMangaDirName(manga: Manga): String {
+        return DiskUtil.buildValidFilename(manga.title)
+    }
+
+    /**
+     * Returns the chapter directory name for a chapter.
+     *
+     * @param chapter the chapter to query.
+     */
+    fun getChapterDirName(chapter: Chapter): String {
+        return DiskUtil.buildValidFilename(chapter.name)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadService.kt

@@ -3,130 +3,177 @@ package eu.kanade.tachiyomi.data.download
 import android.app.Service
 import android.content.Context
 import android.content.Intent
+import android.net.NetworkInfo.State.CONNECTED
+import android.net.NetworkInfo.State.DISCONNECTED
 import android.os.IBinder
 import android.os.PowerManager
-import com.github.pwittchen.reactivenetwork.library.ConnectivityStatus
+import com.github.pwittchen.reactivenetwork.library.Connectivity
 import com.github.pwittchen.reactivenetwork.library.ReactiveNetwork
+import com.jakewharton.rxrelay.BehaviorRelay
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.util.connectivityManager
+import eu.kanade.tachiyomi.util.plusAssign
+import eu.kanade.tachiyomi.util.powerManager
 import eu.kanade.tachiyomi.util.toast
-import rx.Subscription
 import rx.android.schedulers.AndroidSchedulers
 import rx.schedulers.Schedulers
+import rx.subscriptions.CompositeSubscription
 import uy.kohesive.injekt.injectLazy
 
+/**
+ * This service is used to manage the downloader. The system can decide to stop the service, in
+ * which case the downloader is also stopped. It's also stopped while there's no network available.
+ * While the downloader is running, a wake lock will be held.
+ */
 class DownloadService : Service() {
 
     companion object {
 
+        /**
+         * Relay used to know when the service is running.
+         */
+        val runningRelay: BehaviorRelay<Boolean> = BehaviorRelay.create(false)
+
+        /**
+         * Starts this service.
+         *
+         * @param context the application context.
+         */
         fun start(context: Context) {
             context.startService(Intent(context, DownloadService::class.java))
         }
 
+        /**
+         * Stops this service.
+         *
+         * @param context the application context.
+         */
         fun stop(context: Context) {
             context.stopService(Intent(context, DownloadService::class.java))
         }
     }
 
-    val downloadManager: DownloadManager by injectLazy()
-    val preferences: PreferencesHelper by injectLazy()
+    /**
+     * Download manager.
+     */
+    private val downloadManager: DownloadManager by injectLazy()
 
-    private var wakeLock: PowerManager.WakeLock? = null
-    private var networkChangeSubscription: Subscription? = null
-    private var queueRunningSubscription: Subscription? = null
-    private var isRunning: Boolean = false
+    /**
+     * Preferences helper.
+     */
+    private val preferences: PreferencesHelper by injectLazy()
 
+    /**
+     * Wake lock to prevent the device to enter sleep mode.
+     */
+    private val wakeLock by lazy {
+        powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DownloadService:WakeLock")
+    }
+
+    /**
+     * Subscriptions to store while the service is running.
+     */
+    private lateinit var subscriptions: CompositeSubscription
+
+    /**
+     * Called when the service is created.
+     */
     override fun onCreate() {
         super.onCreate()
-
-        createWakeLock()
-
-        listenQueueRunningChanges()
+        runningRelay.call(true)
+        subscriptions = CompositeSubscription()
+        listenDownloaderState()
         listenNetworkChanges()
     }
 
-    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        return Service.START_STICKY
-    }
-
+    /**
+     * Called when the service is destroyed.
+     */
     override fun onDestroy() {
-        queueRunningSubscription?.unsubscribe()
-        networkChangeSubscription?.unsubscribe()
-        downloadManager.destroySubscriptions()
-        destroyWakeLock()
+        runningRelay.call(false)
+        subscriptions.unsubscribe()
+        downloadManager.stopDownloads()
+        wakeLock.releaseIfNeeded()
         super.onDestroy()
     }
 
+    /**
+     * Not used.
+     */
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        return Service.START_NOT_STICKY
+    }
+
+    /**
+     * Not used.
+     */
     override fun onBind(intent: Intent): IBinder? {
         return null
     }
 
+    /**
+     * Listens to network changes.
+     *
+     * @see onNetworkStateChanged
+     */
     private fun listenNetworkChanges() {
-        networkChangeSubscription = ReactiveNetwork().enableInternetCheck()
-                .observeConnectivity(applicationContext)
+        subscriptions += ReactiveNetwork.observeNetworkConnectivity(applicationContext)
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe({ state ->
-                    when (state) {
-                        ConnectivityStatus.WIFI_CONNECTED_HAS_INTERNET -> {
-                            // If there are no remaining downloads, destroy the service
-                            if (!isRunning && !downloadManager.startDownloads()) {
-                                stopSelf()
-                            }
-                        }
-                        ConnectivityStatus.MOBILE_CONNECTED -> {
-                            if (!preferences.downloadOnlyOverWifi()) {
-                                if (!isRunning && !downloadManager.startDownloads()) {
-                                    stopSelf()
-                                }
-                            } else if (isRunning) {
-                                downloadManager.stopDownloads(getString(R.string.download_notifier_text_only_wifi))
-                            }
-                        }
-                        else -> {
-                            if (isRunning) {
-                                downloadManager.stopDownloads(getString(R.string.download_notifier_text_only_wifi))
-                            }
-                        }
-                    }
+                .subscribe({ state -> onNetworkStateChanged(state)
                 }, { error ->
                     toast(R.string.download_queue_error)
                     stopSelf()
                 })
     }
 
-    private fun listenQueueRunningChanges() {
-        queueRunningSubscription = downloadManager.runningSubject.subscribe { running ->
-            isRunning = running
+    /**
+     * Called when the network state changes.
+     *
+     * @param connectivity the new network state.
+     */
+    private fun onNetworkStateChanged(connectivity: Connectivity) {
+        when (connectivity.state) {
+            CONNECTED -> {
+                if (preferences.downloadOnlyOverWifi() && connectivityManager.isActiveNetworkMetered) {
+                    downloadManager.stopDownloads(getString(R.string.download_notifier_text_only_wifi))
+                } else {
+                    val started = downloadManager.startDownloads()
+                    if (!started) stopSelf()
+                }
+            }
+            DISCONNECTED -> {
+                downloadManager.stopDownloads(getString(R.string.download_notifier_no_network))
+            }
+            else -> { /* Do nothing */ }
+        }
+    }
+
+    /**
+     * Listens to downloader status. Enables or disables the wake lock depending on the status.
+     */
+    private fun listenDownloaderState() {
+        subscriptions += downloadManager.runningRelay.subscribe { running ->
             if (running)
-                acquireWakeLock()
+                wakeLock.acquireIfNeeded()
             else
-                releaseWakeLock()
+                wakeLock.releaseIfNeeded()
         }
     }
 
-    private fun createWakeLock() {
-        wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager).newWakeLock(
-                PowerManager.PARTIAL_WAKE_LOCK, "DownloadService:WakeLock")
+    /**
+     * Releases the wake lock if it's held.
+     */
+    fun PowerManager.WakeLock.releaseIfNeeded() {
+        if (isHeld) release()
     }
 
-    private fun destroyWakeLock() {
-        if (wakeLock != null && wakeLock!!.isHeld) {
-            wakeLock!!.release()
-            wakeLock = null
-        }
-    }
-
-    fun acquireWakeLock() {
-        if (wakeLock != null && !wakeLock!!.isHeld) {
-            wakeLock!!.acquire()
-        }
-    }
-
-    fun releaseWakeLock() {
-        if (wakeLock != null && wakeLock!!.isHeld) {
-            wakeLock!!.release()
-        }
+    /**
+     * Acquires the wake lock if it's not held.
+     */
+    fun PowerManager.WakeLock.acquireIfNeeded() {
+        if (!isHeld) acquire()
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadStore.kt

@@ -0,0 +1,135 @@
+package eu.kanade.tachiyomi.data.download
+
+import android.content.Context
+import com.google.gson.Gson
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.download.model.Download
+import eu.kanade.tachiyomi.data.source.SourceManager
+import eu.kanade.tachiyomi.data.source.online.OnlineSource
+import uy.kohesive.injekt.injectLazy
+
+/**
+ * This class is used to persist active downloads across application restarts.
+ *
+ * @param context the application context.
+ */
+class DownloadStore(context: Context) {
+
+    /**
+     * Preference file where active downloads are stored.
+     */
+    private val preferences = context.getSharedPreferences("active_downloads", Context.MODE_PRIVATE)
+
+    /**
+     * Gson instance to serialize/deserialize downloads.
+     */
+    private val gson: Gson by injectLazy()
+
+    /**
+     * Source manager.
+     */
+    private val sourceManager: SourceManager by injectLazy()
+
+    /**
+     * Database helper.
+     */
+    private val db: DatabaseHelper by injectLazy()
+
+    /**
+     * Counter used to keep the queue order.
+     */
+    private var counter = 0
+
+    /**
+     * Adds a list of downloads to the store.
+     *
+     * @param downloads the list of downloads to add.
+     */
+    fun addAll(downloads: List<Download>) {
+        val editor = preferences.edit()
+        downloads.forEach { editor.putString(getKey(it), serialize(it)) }
+        editor.apply()
+    }
+
+    /**
+     * Removes a download from the store.
+     *
+     * @param download the download to remove.
+     */
+    fun remove(download: Download) {
+        preferences.edit().remove(getKey(download)).apply()
+    }
+
+    /**
+     * Removes all the downloads from the store.
+     */
+    fun clear() {
+        preferences.edit().clear().apply()
+    }
+
+    /**
+     * Returns the preference's key for the given download.
+     *
+     * @param download the download.
+     */
+    private fun getKey(download: Download): String {
+        return download.chapter.id!!.toString()
+    }
+
+    /**
+     * Returns the list of downloads to restore. It should be called in a background thread.
+     */
+    fun restore(): List<Download> {
+        val objs = preferences.all
+                .mapNotNull { it.value as? String }
+                .map { deserialize(it) }
+                .sortedBy { it.order }
+
+        val downloads = mutableListOf<Download>()
+        if (objs.isNotEmpty()) {
+            val cachedManga = mutableMapOf<Long, Manga?>()
+            for ((mangaId, chapterId) in objs) {
+                val manga = cachedManga.getOrPut(mangaId) {
+                    db.getManga(mangaId).executeAsBlocking()
+                } ?: continue
+                val source = sourceManager.get(manga.source) as? OnlineSource ?: continue
+                val chapter = db.getChapter(chapterId).executeAsBlocking() ?: continue
+                downloads.add(Download(source, manga, chapter))
+            }
+        }
+
+        // Clear the store, downloads will be added again immediately.
+        clear()
+        return downloads
+    }
+
+    /**
+     * Converts a download to a string.
+     *
+     * @param download the download to serialize.
+     */
+    private fun serialize(download: Download): String {
+        val obj = DownloadObject(download.manga.id!!, download.chapter.id!!, counter++)
+        return gson.toJson(obj)
+    }
+
+    /**
+     * Restore a download from a string.
+     *
+     * @param string the download as string.
+     */
+    private fun deserialize(string: String): DownloadObject {
+        return gson.fromJson(string, DownloadObject::class.java)
+    }
+
+    /**
+     * Class used for download serialization
+     *
+     * @param mangaId the id of the manga.
+     * @param chapterId the id of the chapter.
+     * @param order the order of the download in the queue.
+     */
+    data class DownloadObject(val mangaId: Long, val chapterId: Long, val order: Int)
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt

@@ -0,0 +1,431 @@
+package eu.kanade.tachiyomi.data.download
+
+import android.content.Context
+import android.webkit.MimeTypeMap
+import com.hippo.unifile.UniFile
+import com.jakewharton.rxrelay.BehaviorRelay
+import com.jakewharton.rxrelay.PublishRelay
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.download.model.Download
+import eu.kanade.tachiyomi.data.download.model.DownloadQueue
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.source.SourceManager
+import eu.kanade.tachiyomi.data.source.model.Page
+import eu.kanade.tachiyomi.data.source.online.OnlineSource
+import eu.kanade.tachiyomi.util.DynamicConcurrentMergeOperator
+import eu.kanade.tachiyomi.util.RetryWithDelay
+import eu.kanade.tachiyomi.util.plusAssign
+import eu.kanade.tachiyomi.util.saveTo
+import okhttp3.Response
+import rx.Observable
+import rx.android.schedulers.AndroidSchedulers
+import rx.schedulers.Schedulers
+import rx.subjects.BehaviorSubject
+import rx.subscriptions.CompositeSubscription
+import timber.log.Timber
+import uy.kohesive.injekt.injectLazy
+import java.net.URLConnection
+
+/**
+ * This class is the one in charge of downloading chapters.
+ *
+ * Its [queue] contains the list of chapters to download. In order to download them, the downloader
+ * subscriptions must be running and the list of chapters must be sent to them by [downloadsRelay].
+ *
+ * The queue manipulation must be done in one thread (currently the main thread) to avoid unexpected
+ * behavior, but it's safe to read it from multiple threads.
+ *
+ * @param context the application context.
+ * @param provider the downloads directory provider.
+ */
+class Downloader(private val context: Context, private val provider: DownloadProvider) {
+
+    /**
+     * Store for persisting downloads across restarts.
+     */
+    private val store = DownloadStore(context)
+
+    /**
+     * Queue where active downloads are kept.
+     */
+    val queue = DownloadQueue(store)
+
+    /**
+     * Source manager.
+     */
+    private val sourceManager: SourceManager by injectLazy()
+
+    /**
+     * Preferences.
+     */
+    private val preferences: PreferencesHelper by injectLazy()
+
+    /**
+     * Notifier for the downloader state and progress.
+     */
+    private val notifier by lazy { DownloadNotifier(context) }
+
+    /**
+     * Downloader subscriptions.
+     */
+    private val subscriptions = CompositeSubscription()
+
+    /**
+     * Subject to do a live update of the number of simultaneous downloads.
+     */
+    private val threadsSubject = BehaviorSubject.create<Int>()
+
+    /**
+     * Relay to send a list of downloads to the downloader.
+     */
+    private val downloadsRelay = PublishRelay.create<List<Download>>()
+
+    /**
+     * Relay to subscribe to the downloader status.
+     */
+    val runningRelay: BehaviorRelay<Boolean> = BehaviorRelay.create(false)
+
+    /**
+     * Whether the downloader is running.
+     */
+    @Volatile private var isRunning: Boolean = false
+
+    init {
+        Observable.fromCallable { store.restore() }
+                .map { downloads -> downloads.filter { isDownloadAllowed(it) } }
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ downloads -> queue.addAll(downloads)
+                }, { error -> Timber.e(error) })
+    }
+
+    /**
+     * Starts the downloader. It doesn't do anything if it's already running or there isn't anything
+     * to download.
+     *
+     * @return true if the downloader is started, false otherwise.
+     */
+    fun start(): Boolean {
+        if (isRunning || queue.isEmpty())
+            return false
+
+        if (!subscriptions.hasSubscriptions())
+            initializeSubscriptions()
+
+        val pending = queue.filter { it.status != Download.DOWNLOADED }
+        pending.forEach { if (it.status != Download.QUEUE) it.status = Download.QUEUE }
+
+        downloadsRelay.call(pending)
+        return !pending.isEmpty()
+    }
+
+    /**
+     * Stops the downloader.
+     */
+    fun stop(reason: String? = null) {
+        destroySubscriptions()
+        queue
+                .filter { it.status == Download.DOWNLOADING }
+                .forEach { it.status = Download.ERROR }
+
+        if (reason != null) {
+            notifier.onWarning(reason)
+        } else {
+            notifier.dismiss()
+        }
+    }
+
+    /**
+     * Removes everything from the queue.
+     */
+    fun clearQueue() {
+        destroySubscriptions()
+        queue.clear()
+        notifier.dismiss()
+    }
+
+    /**
+     * Prepares the subscriptions to start downloading.
+     */
+    private fun initializeSubscriptions() {
+        if (isRunning) return
+        isRunning = true
+        runningRelay.call(true)
+
+        subscriptions.clear()
+
+        subscriptions += preferences.downloadThreads().asObservable()
+                .subscribe {
+                    threadsSubject.onNext(it)
+                    notifier.multipleDownloadThreads = it > 1
+                }
+
+        subscriptions += downloadsRelay.flatMap { Observable.from(it) }
+                .lift(DynamicConcurrentMergeOperator<Download, Download>({ downloadChapter(it) }, threadsSubject))
+                .onBackpressureBuffer()
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ completeDownload(it)
+                }, { error ->
+                    DownloadService.stop(context)
+                    Timber.e(error)
+                    notifier.onError(error.message)
+                })
+    }
+
+    /**
+     * Destroys the downloader subscriptions.
+     */
+    private fun destroySubscriptions() {
+        if (!isRunning) return
+        isRunning = false
+        runningRelay.call(false)
+
+        subscriptions.clear()
+    }
+
+    /**
+     * Creates a download object for every chapter and adds them to the downloads queue. This method
+     * must be called in the main thread.
+     *
+     * @param manga the manga of the chapters to download.
+     * @param chapters the list of chapters to download.
+     */
+    fun queueChapters(manga: Manga, chapters: List<Chapter>) {
+        val source = sourceManager.get(manga.source) as? OnlineSource ?: return
+
+        val chaptersToQueue = chapters
+                // Avoid downloading chapters with the same name.
+                .distinctBy { it.name }
+                // Add chapters to queue from the start.
+                .sortedByDescending { it.source_order }
+                // Create a downloader for each one.
+                .map { Download(source, manga, it) }
+                // Filter out those already queued or downloaded.
+                .filter { isDownloadAllowed(it) }
+
+        // Return if there's nothing to queue.
+        if (chaptersToQueue.isEmpty())
+            return
+
+        queue.addAll(chaptersToQueue)
+
+        // Initialize queue size.
+        notifier.initialQueueSize = queue.size
+
+        if (isRunning) {
+            // Send the list of downloads to the downloader.
+            downloadsRelay.call(chaptersToQueue)
+        } else {
+            // Show initial notification.
+            notifier.onProgressChange(queue)
+        }
+    }
+
+    /**
+     * Returns true if the given download can be queued and downloaded.
+     *
+     * @param download the download to be checked.
+     */
+    private fun isDownloadAllowed(download: Download): Boolean {
+        // If the chapter is already queued, don't add it again
+        if (queue.any { it.chapter.id == download.chapter.id })
+            return false
+
+        val dir = provider.findChapterDir(download.source, download.manga, download.chapter)
+        if (dir != null && dir.exists())
+            return false
+
+        return true
+    }
+
+    /**
+     * Returns the observable which downloads a chapter.
+     *
+     * @param download the chapter to be downloaded.
+     */
+    private fun downloadChapter(download: Download): Observable<Download> {
+        val chapterDirname = provider.getChapterDirName(download.chapter)
+        val mangaDir = provider.getMangaDir(download.source, download.manga)
+        val tmpDir = mangaDir.createDirectory("${chapterDirname}_tmp")
+
+        val pageListObservable = if (download.pages == null) {
+            // Pull page list from network and add them to download object
+            download.source.fetchPageListFromNetwork(download.chapter)
+                    .doOnNext { pages ->
+                        download.pages = pages
+                    }
+        } else {
+            // Or if the page list already exists, start from the file
+            Observable.just(download.pages!!)
+        }
+
+        return pageListObservable
+                .doOnNext { pages ->
+                    // Delete all temporary (unfinished) files
+                    tmpDir.listFiles()
+                            ?.filter { it.name!!.endsWith(".tmp") }
+                            ?.forEach { it.delete() }
+
+                    download.downloadedImages = 0
+                    download.status = Download.DOWNLOADING
+                }
+                // Get all the URLs to the source images, fetch pages if necessary
+                .flatMap { download.source.fetchAllImageUrlsFromPageList(it) }
+                // Start downloading images, consider we can have downloaded images already
+                .concatMap { page -> getOrDownloadImage(page, download, tmpDir) }
+                // Do when page is downloaded.
+                .doOnNext { notifier.onProgressChange(download, queue) }
+                .toList()
+                .map { pages -> download }
+                // Do after download completes
+                .doOnNext { ensureSuccessfulDownload(download, tmpDir, chapterDirname) }
+                // If the page list threw, it will resume here
+                .onErrorReturn { error ->
+                    download.status = Download.ERROR
+                    notifier.onError(error.message, download.chapter.name)
+                    download
+                }
+                .subscribeOn(Schedulers.io())
+    }
+
+    /**
+     * Returns the observable which gets the image from the filesystem if it exists or downloads it
+     * otherwise.
+     *
+     * @param page the page to download.
+     * @param download the download of the page.
+     * @param tmpDir the temporary directory of the download.
+     */
+    private fun getOrDownloadImage(page: Page, download: Download, tmpDir: UniFile): Observable<Page> {
+        // If the image URL is empty, do nothing
+        if (page.imageUrl == null)
+            return Observable.just(page)
+
+        val filename = String.format("%03d", page.number)
+        val tmpFile = tmpDir.findFile("$filename.tmp")
+
+        // Delete temp file if it exists.
+        tmpFile?.delete()
+
+        // Try to find the image file.
+        val imageFile = tmpDir.listFiles()!!.find { it.name!!.startsWith("$filename.")}
+
+        // If the image is already downloaded, do nothing. Otherwise download from network
+        val pageObservable = if (imageFile != null)
+            Observable.just(imageFile)
+        else
+            downloadImage(page, download.source, tmpDir, filename)
+
+        return pageObservable
+                // When the image is ready, set image path, progress (just in case) and status
+                .doOnNext { file ->
+                    page.uri = file.uri
+                    page.progress = 100
+                    download.downloadedImages++
+                    page.status = Page.READY
+                }
+                .map { page }
+                // Mark this page as error and allow to download the remaining
+                .onErrorReturn {
+                    page.progress = 0
+                    page.status = Page.ERROR
+                    page
+                }
+    }
+
+    /**
+     * Returns the observable which downloads the image from network.
+     *
+     * @param page the page to download.
+     * @param source the source of the page.
+     * @param tmpDir the temporary directory of the download.
+     * @param filename the filename of the image.
+     */
+    private fun downloadImage(page: Page, source: OnlineSource, tmpDir: UniFile, filename: String): Observable<UniFile> {
+        page.status = Page.DOWNLOAD_IMAGE
+        page.progress = 0
+        return source.imageResponse(page)
+                .map { response ->
+                    val file = tmpDir.createFile("$filename.tmp")
+                    try {
+                        response.body().source().saveTo(file.openOutputStream())
+                        val extension = getImageExtension(response, file)
+                        file.renameTo("$filename.$extension")
+                    } catch (e: Exception) {
+                        response.close()
+                        file.delete()
+                        throw e
+                    }
+                    file
+                }
+                // Retry 3 times, waiting 2, 4 and 8 seconds between attempts.
+                .retryWhen(RetryWithDelay(3, { (2 shl it - 1) * 1000 }, Schedulers.trampoline()))
+    }
+
+    /**
+     * Returns the extension of the downloaded image from the network response, or if it's null,
+     * analyze the file. If everything fails, assume it's a jpg.
+     *
+     * @param response the network response of the image.
+     * @param file the file where the image is already downloaded.
+     */
+    private fun getImageExtension(response: Response, file: UniFile): String {
+        // Read content type if available.
+        val mime = response.body().contentType()?.let { ct -> "${ct.type()}/${ct.subtype()}" }
+        // Else guess from the uri.
+        ?: context.contentResolver.getType(file.uri)
+        // Else read magic numbers.
+        ?: file.openInputStream().buffered().use {
+            URLConnection.guessContentTypeFromStream(it)
+        }
+
+        return MimeTypeMap.getSingleton().getExtensionFromMimeType(mime) ?: "jpg"
+    }
+
+    /**
+     * Checks if the download was successful.
+     *
+     * @param download the download to check.
+     * @param tmpDir the directory where the download is currently stored.
+     * @param dirname the real (non temporary) directory name of the download.
+     */
+    private fun ensureSuccessfulDownload(download: Download, tmpDir: UniFile, dirname: String) {
+        // Ensure that the chapter folder has all the images.
+        val downloadedImages = tmpDir.listFiles().orEmpty().filterNot { it.name!!.endsWith(".tmp") }
+
+        download.status = if (downloadedImages.size == download.pages!!.size) {
+            Download.DOWNLOADED
+        } else {
+            Download.ERROR
+        }
+
+        // Only rename the directory if it's downloaded.
+        if (download.status == Download.DOWNLOADED) {
+            tmpDir.renameTo(dirname)
+        }
+    }
+
+    /**
+     * Completes a download. This method is called in the main thread.
+     */
+    private fun completeDownload(download: Download) {
+        // Delete successful downloads from queue
+        if (download.status == Download.DOWNLOADED) {
+            // remove downloaded chapter from queue
+            queue.remove(download)
+            notifier.onProgressChange(queue)
+        }
+        if (areAllDownloadsFinished()) {
+            DownloadService.stop(context)
+        }
+    }
+
+    /**
+     * Returns true if all the queued downloads are in DOWNLOADED or ERROR state.
+     */
+    private fun areAllDownloadsFinished(): Boolean {
+        return queue.none { it.status <= Download.DOWNLOADING }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/model/Download.kt

@@ -5,12 +5,9 @@ import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.data.source.online.OnlineSource
 import rx.subjects.PublishSubject
-import java.io.File
 
 class Download(val source: OnlineSource, val manga: Manga, val chapter: Chapter) {
 
-    lateinit var directory: File
-
     var pages: List<Page>? = null
 
     @Volatile @Transient var totalProgress: Int = 0

app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt

@@ -1,38 +1,52 @@
 package eu.kanade.tachiyomi.data.download.model
 
+import com.jakewharton.rxrelay.PublishRelay
 import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.download.DownloadStore
 import eu.kanade.tachiyomi.data.source.model.Page
 import rx.Observable
 import rx.subjects.PublishSubject
 import java.util.concurrent.CopyOnWriteArrayList
 
-class DownloadQueue(private val queue: MutableList<Download> = CopyOnWriteArrayList<Download>())
+class DownloadQueue(
+        private val store: DownloadStore,
+        private val queue: MutableList<Download> = CopyOnWriteArrayList<Download>())
 : List<Download> by queue {
 
     private val statusSubject = PublishSubject.create<Download>()
 
-    private val removeSubject = PublishSubject.create<Download>()
+    private val updatedRelay = PublishRelay.create<Unit>()
 
-    fun add(download: Download): Boolean {
-        download.setStatusSubject(statusSubject)
-        download.status = Download.QUEUE
-        return queue.add(download)
+    fun addAll(downloads: List<Download>) {
+        downloads.forEach { download ->
+            download.setStatusSubject(statusSubject)
+            download.status = Download.QUEUE
+        }
+        queue.addAll(downloads)
+        store.addAll(downloads)
+        updatedRelay.call(Unit)
     }
 
-    fun del(download: Download) {
+    fun remove(download: Download) {
         val removed = queue.remove(download)
+        store.remove(download)
         download.setStatusSubject(null)
         if (removed) {
-            removeSubject.onNext(download)
+            updatedRelay.call(Unit)
         }
     }
 
-    fun del(chapter: Chapter) {
-        find { it.chapter.id == chapter.id }?.let { del(it) }
+    fun remove(chapter: Chapter) {
+        find { it.chapter.id == chapter.id }?.let { remove(it) }
     }
 
     fun clear() {
-        queue.forEach { del(it) }
+        queue.forEach { download ->
+            download.setStatusSubject(null)
+        }
+        queue.clear()
+        store.clear()
+        updatedRelay.call(Unit)
     }
 
     fun getActiveDownloads(): Observable<Download> =
@@ -40,7 +54,9 @@ class DownloadQueue(private val queue: MutableList<Download> = CopyOnWriteArrayL
 
     fun getStatusObservable(): Observable<Download> = statusSubject.onBackpressureBuffer()
 
-    fun getRemovedObservable(): Observable<Download> = removeSubject.onBackpressureBuffer()
+    fun getUpdatedObservable(): Observable<List<Download>> = updatedRelay.onBackpressureBuffer()
+            .startWith(Unit)
+            .map { this }
 
     fun getProgressObservable(): Observable<Download> {
         return statusSubject.onBackpressureBuffer()

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateJob.kt

@@ -0,0 +1,48 @@
+package eu.kanade.tachiyomi.data.library
+
+import com.evernote.android.job.Job
+import com.evernote.android.job.JobManager
+import com.evernote.android.job.JobRequest
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+
+class LibraryUpdateJob : Job() {
+
+    override fun onRunJob(params: Params): Result {
+        LibraryUpdateService.start(context)
+        return Job.Result.SUCCESS
+    }
+
+    companion object {
+        const val TAG = "LibraryUpdate"
+
+        fun setupTask(prefInterval: Int? = null) {
+            val preferences = Injekt.get<PreferencesHelper>()
+            val interval = prefInterval ?: preferences.libraryUpdateInterval().getOrDefault()
+            if (interval > 0) {
+                val restrictions = preferences.libraryUpdateRestriction()
+                val acRestriction = "ac" in restrictions
+                val wifiRestriction = if ("wifi" in restrictions)
+                    JobRequest.NetworkType.UNMETERED
+                else
+                    JobRequest.NetworkType.CONNECTED
+
+                JobRequest.Builder(TAG)
+                        .setPeriodic(interval * 60 * 60 * 1000L, 10 * 60 * 1000)
+                        .setRequiredNetworkType(wifiRestriction)
+                        .setRequiresCharging(acRestriction)
+                        .setRequirementsEnforced(true)
+                        .setPersisted(true)
+                        .setUpdateCurrent(true)
+                        .build()
+                        .schedule()
+            }
+        }
+
+        fun cancelTask() {
+            JobManager.instance().cancelAllForTag(TAG)
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt

@@ -5,7 +5,6 @@ import android.app.Service
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
-import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.os.IBinder
 import android.os.PowerManager
@@ -21,10 +20,7 @@ import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.data.source.SourceManager
 import eu.kanade.tachiyomi.data.source.online.OnlineSource
 import eu.kanade.tachiyomi.ui.main.MainActivity
-import eu.kanade.tachiyomi.util.AndroidComponentUtil
-import eu.kanade.tachiyomi.util.notification
-import eu.kanade.tachiyomi.util.notificationManager
-import eu.kanade.tachiyomi.util.syncChaptersWithSource
+import eu.kanade.tachiyomi.util.*
 import rx.Observable
 import rx.Subscription
 import rx.schedulers.Schedulers
@@ -73,7 +69,9 @@ class LibraryUpdateService : Service() {
     private val notificationId: Int
         get() = Constants.NOTIFICATION_LIBRARY_ID
 
-    private var notificationBitmap: Bitmap? = null
+    private val notificationBitmap by lazy {
+        BitmapFactory.decodeResource(resources, R.mipmap.ic_launcher)
+    }
 
     companion object {
 
@@ -141,8 +139,6 @@ class LibraryUpdateService : Service() {
      */
     override fun onDestroy() {
         subscription?.unsubscribe()
-        notificationBitmap?.recycle()
-        notificationBitmap = null
         destroyWakeLock()
         super.onDestroy()
     }
@@ -171,10 +167,6 @@ class LibraryUpdateService : Service() {
         // Update favorite manga. Destroy service when completed or in case of an error.
         subscription = Observable
                 .defer {
-                    if (notificationBitmap == null) {
-                        notificationBitmap = BitmapFactory.decodeResource(resources, R.mipmap.ic_launcher)
-                    }
-
                     val mangaList = getMangaToUpdate(intent)
 
                     // Update either chapter list or manga details.
@@ -267,7 +259,6 @@ class LibraryUpdateService : Service() {
                     } else {
                         showResultNotification(newUpdates, failedUpdates)
                     }
-                    LibraryUpdateTrigger.setupTask(this)
                 }
     }
 
@@ -328,7 +319,7 @@ class LibraryUpdateService : Service() {
      * @return the body of the notification to display.
      */
     private fun getUpdatedMangasBody(updates: List<Manga>, failedUpdates: List<Manga>): String {
-        return with(StringBuilder()) {
+        return buildString {
             if (updates.isEmpty()) {
                 append(getString(R.string.notification_no_new_chapters))
                 append("\n")
@@ -336,7 +327,7 @@ class LibraryUpdateService : Service() {
                 append(getString(R.string.notification_new_chapters))
                 for (manga in updates) {
                     append("\n")
-                    append(manga.title)
+                    append(manga.title.chop(45))
                 }
             }
             if (!failedUpdates.isEmpty()) {
@@ -344,10 +335,9 @@ class LibraryUpdateService : Service() {
                 append(getString(R.string.notification_manga_update_failed))
                 for (manga in failedUpdates) {
                     append("\n")
-                    append(manga.title)
+                    append(manga.title.chop(45))
                 }
             }
-            toString()
         }
     }
 
@@ -376,7 +366,7 @@ class LibraryUpdateService : Service() {
      * @param body the body of the notification.
      */
     private fun showNotification(title: String, body: String) {
-        notificationManager.notify(notificationId, notification() {
+        notificationManager.notify(notificationId, notification {
             setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
             setLargeIcon(notificationBitmap)
             setContentTitle(title)
@@ -392,7 +382,7 @@ class LibraryUpdateService : Service() {
      * @param total the total progress.
      */
     private fun showProgressNotification(manga: Manga, current: Int, total: Int, cancelIntent: PendingIntent) {
-        notificationManager.notify(notificationId, notification() {
+        notificationManager.notify(notificationId, notification {
             setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
             setLargeIcon(notificationBitmap)
             setContentTitle(manga.title)
@@ -413,7 +403,7 @@ class LibraryUpdateService : Service() {
         val title = getString(R.string.notification_update_completed)
         val body = getUpdatedMangasBody(updates, failed)
 
-        notificationManager.notify(notificationId, notification() {
+        notificationManager.notify(notificationId, notification {
             setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
             setLargeIcon(notificationBitmap)
             setContentTitle(title)

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateTrigger.kt

@@ -1,52 +0,0 @@
-package eu.kanade.tachiyomi.data.library
-
-import android.content.Context
-import com.google.android.gms.gcm.*
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
-import eu.kanade.tachiyomi.data.preference.getOrDefault
-import uy.kohesive.injekt.Injekt
-import uy.kohesive.injekt.api.get
-
-class LibraryUpdateTrigger : GcmTaskService() {
-
-    override fun onInitializeTasks() {
-        setupTask(this)
-    }
-
-    override fun onRunTask(params: TaskParams): Int {
-        LibraryUpdateService.start(this)
-        return GcmNetworkManager.RESULT_SUCCESS
-    }
-
-    companion object {
-        fun setupTask(context: Context, prefInterval: Int? = null) {
-            val preferences = Injekt.get<PreferencesHelper>()
-            val interval = prefInterval ?: preferences.libraryUpdateInterval().getOrDefault()
-            if (interval > 0) {
-                val restrictions = preferences.libraryUpdateRestriction()
-                val acRestriction = "ac" in restrictions
-                val wifiRestriction = if ("wifi" in restrictions)
-                    Task.NETWORK_STATE_UNMETERED
-                else
-                    Task.NETWORK_STATE_ANY
-
-                val task = PeriodicTask.Builder()
-                        .setService(LibraryUpdateTrigger::class.java)
-                        .setTag("Library periodic update")
-                        .setPeriod(interval * 60 * 60L)
-                        .setFlex(5 * 60)
-                        .setRequiredNetwork(wifiRestriction)
-                        .setRequiresCharging(acRestriction)
-                        .setUpdateCurrent(true)
-                        .setPersisted(true)
-                        .build()
-
-                GcmNetworkManager.getInstance(context).schedule(task)
-            }
-        }
-
-        fun cancelTask(context: Context) {
-            GcmNetworkManager.getInstance(context).cancelAllTasks(LibraryUpdateTrigger::class.java)
-        }
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/network/OkHttpExtensions.kt

@@ -12,12 +12,7 @@ import java.util.concurrent.atomic.AtomicBoolean
 fun Call.asObservable(): Observable<Response> {
     return Observable.create { subscriber ->
         // Since Call is a one-shot type, clone it for each new subscriber.
-        val call = if (!isExecuted) this else {
-            // TODO use clone method in OkHttp 3.5
-            val field = javaClass.getDeclaredField("client").apply { isAccessible = true }
-            val client = field.get(this) as OkHttpClient
-            client.newCall(request())
-        }
+        val call = clone()
 
         // Wrap the call in a helper which handles both unsubscription and backpressure.
         val requestArbiter = object : AtomicBoolean(), Producer, Subscription {

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferenceKeys.kt

@@ -8,6 +8,7 @@ import eu.kanade.tachiyomi.R
  * in the file "keys.xml". By using this class we can define preferences in one place and get them
  * referenced here.
  */
+@Suppress("HasPlatformType")
 class PreferenceKeys(context: Context) {
 
     val theme = context.getString(R.string.pref_theme_key)
@@ -44,8 +45,6 @@ class PreferenceKeys(context: Context) {
 
     val readWithVolumeKeys = context.getString(R.string.pref_read_with_volume_keys_key)
 
-    val reencodeImage = context.getString(R.string.pref_reencode_key)
-
     val portraitColumns = context.getString(R.string.pref_library_columns_portrait_key)
 
     val landscapeColumns = context.getString(R.string.pref_library_columns_landscape_key)
@@ -96,6 +95,6 @@ class PreferenceKeys(context: Context) {
 
     fun syncPassword(syncId: Int) = "pref_mangasync_password_$syncId"
 
-    val  libraryAsList = context.getString(R.string.pref_display_library_as_list)
+    val libraryAsList = context.getString(R.string.pref_display_library_as_list)
 
 }

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferencesHelper.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.data.preference
 
 import android.content.Context
+import android.net.Uri
 import android.os.Environment
 import android.preference.PreferenceManager
 import com.f2prateek.rx.preferences.Preference
@@ -9,7 +10,6 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.mangasync.MangaSyncService
 import eu.kanade.tachiyomi.data.source.Source
 import java.io.File
-import java.io.IOException
 
 fun <T> Preference<T>.getOrDefault(): T = get() ?: defaultValue()!!
 
@@ -20,17 +20,9 @@ class PreferencesHelper(context: Context) {
     private val prefs = PreferenceManager.getDefaultSharedPreferences(context)
     private val rxPrefs = RxSharedPreferences.create(prefs)
 
-    private val defaultDownloadsDir = File(Environment.getExternalStorageDirectory().absolutePath +
-            File.separator + context.getString(R.string.app_name), "downloads")
-
-    init {
-        // Don't display downloaded chapters in gallery apps creating a ".nomedia" file
-        try {
-            File(downloadsDirectory().getOrDefault(), ".nomedia").createNewFile()
-        } catch (e: IOException) {
-            /* Ignore */
-        }
-    }
+    private val defaultDownloadsDir = Uri.fromFile(
+            File(Environment.getExternalStorageDirectory().absolutePath + File.separator +
+                    context.getString(R.string.app_name), "downloads"))
 
     fun startScreen() = prefs.getInt(keys.startScreen, 1)
 
@@ -70,8 +62,6 @@ class PreferencesHelper(context: Context) {
 
     fun readWithVolumeKeys() = rxPrefs.getBoolean(keys.readWithVolumeKeys, false)
 
-    fun reencodeImage() = prefs.getBoolean(keys.reencodeImage, false)
-
     fun portraitColumns() = rxPrefs.getInteger(keys.portraitColumns, 0)
 
     fun landscapeColumns() = rxPrefs.getInteger(keys.landscapeColumns, 0)
@@ -114,7 +104,7 @@ class PreferencesHelper(context: Context) {
                 .apply()
     }
 
-    fun downloadsDirectory() = rxPrefs.getString(keys.downloadsDirectory, defaultDownloadsDir.absolutePath)
+    fun downloadsDirectory() = rxPrefs.getString(keys.downloadsDirectory, defaultDownloadsDir.toString())
 
     fun downloadThreads() = rxPrefs.getInteger(keys.downloadThreads, 1)
 

app/src/main/java/eu/kanade/tachiyomi/data/source/model/Page.kt

@@ -1,16 +1,20 @@
 package eu.kanade.tachiyomi.data.source.model
 
+import android.net.Uri
 import eu.kanade.tachiyomi.data.network.ProgressListener
 import eu.kanade.tachiyomi.ui.reader.ReaderChapter
 import rx.subjects.Subject
 
 class Page(
-        val pageNumber: Int,
-        val url: String,
+        val index: Int,
+        val url: String = "",
         var imageUrl: String? = null,
-        @Transient var imagePath: String? = null
+        @Transient var uri: Uri? = null
 ) : ProgressListener {
 
+    val number: Int
+        get() = index + 1
+
     @Transient lateinit var chapter: ReaderChapter
 
     @Transient @Volatile var status: Int = 0

app/src/main/java/eu/kanade/tachiyomi/data/source/online/OnlineSource.kt

@@ -1,5 +1,6 @@
 package eu.kanade.tachiyomi.data.source.online
 
+import android.net.Uri
 import eu.kanade.tachiyomi.data.cache.ChapterCache
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
@@ -416,7 +417,7 @@ abstract class OnlineSource() : Source {
                     }
                 }
                 .doOnNext {
-                    page.imagePath = chapterCache.getImagePath(imageUrl)
+                    page.uri = Uri.fromFile(chapterCache.getImageFile(imageUrl))
                     page.status = Page.READY
                 }
                 .doOnError { page.status = Page.ERROR }
@@ -431,7 +432,7 @@ abstract class OnlineSource() : Source {
     private fun cacheImage(page: Page): Observable<Page> {
         page.status = Page.DOWNLOAD_IMAGE
         return imageResponse(page)
-                .doOnNext { chapterCache.putImageToCache(page.imageUrl!!, it, preferences.reencodeImage()) }
+                .doOnNext { chapterCache.putImageToCache(page.imageUrl!!, it) }
                 .map { page }
     }
 
@@ -461,8 +462,14 @@ abstract class OnlineSource() : Source {
     }
 
 
-    // Overridable method to allow custom parsing.
-    open fun parseChapterNumber(chapter: Chapter) {
+    /**
+     * Called before inserting a new chapter into database. Use it if you need to override chapter
+     * fields, like the title or the chapter number. Do not change anything to [manga].
+     *
+     * @param chapter the chapter to be added.
+     * @param manga the manga of the chapter.
+     */
+    open fun prepareNewChapter(chapter: Chapter, manga: Manga) {
 
     }
 

app/src/main/java/eu/kanade/tachiyomi/data/source/online/english/Batoto.kt

@@ -201,7 +201,7 @@ class Batoto(override val id: Int) : ParsedOnlineSource(), LoginSource {
     private fun parseDateFromElement(dateElement: Element): Long {
         val dateAsString = dateElement.text()
 
-        val date: Date
+        var date: Date
         try {
             date = SimpleDateFormat("dd MMMMM yyyy - hh:mm a", Locale.ENGLISH).parse(dateAsString)
         } catch (e: ParseException) {

app/src/main/java/eu/kanade/tachiyomi/data/source/online/english/Mangahere.kt

@@ -80,10 +80,22 @@ class Mangahere(override val id: Int) : ParsedOnlineSource() {
     override fun chapterListSelector() = ".detail_list > ul:not([class]) > li"
 
     override fun chapterFromElement(element: Element, chapter: Chapter) {
-        val urlElement = element.select("a").first()
+        val parentEl = element.select("span.left").first()
+
+        val urlElement = parentEl.select("a").first()
+
+        var volume = parentEl.select("span.mr6")?.first()?.text()?.trim()?:""
+        if (volume.length > 0) {
+            volume = " - " + volume
+        }
+
+        var title = parentEl?.textNodes()?.last()?.text()?.trim()?:""
+        if (title.length > 0) {
+            title = " - " + title
+        }
 
         chapter.setUrlWithoutDomain(urlElement.attr("href"))
-        chapter.name = urlElement.text()
+        chapter.name = urlElement.text() + volume + title
         chapter.date_upload = element.select("span.right").first()?.text()?.let { parseChapterDate(it) } ?: 0
     }
 

app/src/main/java/eu/kanade/tachiyomi/data/source/online/english/Mangasee.kt

@@ -1,125 +1,163 @@
 package eu.kanade.tachiyomi.data.source.online.english
 
-import android.content.Context
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.network.POST
 import eu.kanade.tachiyomi.data.source.EN
 import eu.kanade.tachiyomi.data.source.Language
+import eu.kanade.tachiyomi.data.source.model.MangasPage
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.data.source.online.ParsedOnlineSource
 import eu.kanade.tachiyomi.util.asJsoup
+import okhttp3.FormBody
+import okhttp3.HttpUrl
+import okhttp3.Request
 import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
-import java.util.*
+import java.text.SimpleDateFormat
 import java.util.regex.Pattern
 
 class Mangasee(override val id: Int) : ParsedOnlineSource() {
 
     override val name = "Mangasee"
 
-    override val baseUrl = "http://www.mangasee.co"
+    override val baseUrl = "http://mangaseeonline.net"
 
     override val lang: Language get() = EN
 
-    override val supportsLatest = false
+    override val supportsLatest = true
 
-    private val datePattern = Pattern.compile("(\\d+)\\s+(.*?)s? (from now|ago).*")
+    private val recentUpdatesPattern = Pattern.compile("(.*?)\\s(\\d+\\.?\\d*)\\s?(Completed)?")
 
-    private val dateFields = HashMap<String, Int>().apply {
-        put("second", Calendar.SECOND)
-        put("minute", Calendar.MINUTE)
-        put("hour", Calendar.HOUR)
-        put("day", Calendar.DATE)
-        put("week", Calendar.WEEK_OF_YEAR)
-        put("month", Calendar.MONTH)
-        put("year", Calendar.YEAR)
+    private val indexPattern = Pattern.compile("-index-(.*?)-")
+
+    override fun popularMangaInitialUrl() = "$baseUrl/search/request.php?sortBy=popularity&sortOrder=descending"
+
+    override fun popularMangaSelector() = "div.requested > div.row"
+
+    override fun popularMangaRequest(page: MangasPage): Request {
+        if (page.page == 1) {
+            page.url = popularMangaInitialUrl()
+        }
+        val (body, requestUrl) = convertQueryToPost(page)
+        return POST(requestUrl, headers, body.build())
     }
 
-    private val dateRelationFields = HashMap<String, Int>().apply {
-        put("from now", 1)
-        put("ago", -1)
+    override fun popularMangaParse(response: Response, page: MangasPage) {
+        val document = response.asJsoup()
+        for (element in document.select(popularMangaSelector())) {
+            Manga.create(id).apply {
+                popularMangaFromElement(element, this)
+                page.mangas.add(this)
+            }
+        }
+
+        page.nextPageUrl = page.url
     }
 
-    override fun popularMangaInitialUrl() = "$baseUrl/search_result.php?Action=Yes&order=popularity&numResultPerPage=20&sort=desc"
-
-    override fun popularMangaSelector() = "div.well > table > tbody > tr"
-
     override fun popularMangaFromElement(element: Element, manga: Manga) {
-        element.select("td > h2 > a").first().let {
-            manga.setUrlWithoutDomain("/${it.attr("href")}")
+        element.select("a.resultLink").first().let {
+            manga.setUrlWithoutDomain(it.attr("href"))
             manga.title = it.text()
         }
     }
 
-    override fun popularMangaNextPageSelector() = "ul.pagination > li > a:contains(Next)"
+    // Not used, overrides parent.
+    override fun popularMangaNextPageSelector() = ""
 
     override fun searchMangaInitialUrl(query: String, filters: List<Filter>) =
-            "$baseUrl/advanced-search/result.php?sortBy=alphabet&direction=ASC&textOnly=no&resPerPage=20&page=1&seriesName=$query&${filters.map { it.id + "=Yes" }.joinToString("&")}"
+            "$baseUrl/search/request.php?sortBy=popularity&sortOrder=descending&keyword=$query&genre=${filters.map { it.id }.joinToString(",")}"
 
-    override fun searchMangaSelector() = "div.row > div > div > div > h1"
+    override fun searchMangaSelector() = "div.searchResults > div.requested > div.row"
+
+    override fun searchMangaRequest(page: MangasPage, query: String, filters: List<Filter>): Request {
+        if (page.page == 1) {
+            page.url = searchMangaInitialUrl(query, filters)
+        }
+        val (body, requestUrl) = convertQueryToPost(page)
+        return POST(requestUrl, headers, body.build())
+    }
+
+    private fun convertQueryToPost(page: MangasPage): Pair<FormBody.Builder, String> {
+        val url = HttpUrl.parse(page.url)
+        val body = FormBody.Builder().add("page", page.page.toString())
+        for (i in 0..url.querySize() - 1) {
+            body.add(url.queryParameterName(i), url.queryParameterValue(i))
+        }
+        val requestUrl = url.scheme() + "://" + url.host() + url.encodedPath()
+        return Pair(body, requestUrl)
+    }
+
+    override fun searchMangaParse(response: Response, page: MangasPage, query: String, filters: List<Filter>) {
+        val document = response.asJsoup()
+        for (element in document.select(popularMangaSelector())) {
+            Manga.create(id).apply {
+                popularMangaFromElement(element, this)
+                page.mangas.add(this)
+            }
+        }
+
+        page.nextPageUrl = page.url
+    }
 
     override fun searchMangaFromElement(element: Element, manga: Manga) {
-        element.select("a").first().let {
-            manga.setUrlWithoutDomain("/${it.attr("href")}")
+        element.select("a.resultLink").first().let {
+            manga.setUrlWithoutDomain(it.attr("href"))
             manga.title = it.text()
         }
     }
 
-    override fun searchMangaNextPageSelector() = "ul.pagination > li > a:contains(Next)"
+    // Not used, overrides parent.
+    override fun searchMangaNextPageSelector() = ""
 
     override fun mangaDetailsParse(document: Document, manga: Manga) {
         val detailElement = document.select("div.well > div.row").first()
 
-        manga.author = detailElement.select("a[href^=../search_result.php?author_name=]").first()?.text()
-        manga.genre = detailElement.select("div > div.row > div:has(b:contains(Genre:)) > a").map { it.text() }.joinToString()
+        manga.author = detailElement.select("a[href^=/search/?author=]").first()?.text()
+        manga.genre = detailElement.select("span.details > div.row > div:has(b:contains(Genre(s))) > a").map { it.text() }.joinToString()
         manga.description = detailElement.select("strong:contains(Description:) + div").first()?.text()
-        manga.status = detailElement.select("div > div.row > div:has(b:contains(Scanlation Status:))").first()?.text().orEmpty().let { parseStatus(it) }
+        manga.status = detailElement.select("a[href^=/search/?status=]").first()?.text().orEmpty().let { parseStatus(it) }
         manga.thumbnail_url = detailElement.select("div > img").first()?.absUrl("src")
     }
 
     private fun parseStatus(status: String) = when {
-        status.contains("Ongoing") -> Manga.ONGOING
-        status.contains("Completed") -> Manga.COMPLETED
+        status.contains("Ongoing (Scan)") -> Manga.ONGOING
+        status.contains("Complete (Scan)") -> Manga.COMPLETED
         else -> Manga.UNKNOWN
     }
 
-    override fun chapterListSelector() = "div.row > div > div.row > div > div.row:has(a.chapter_link[alt])"
+    override fun chapterListSelector() = "div.chapter-list > a"
 
     override fun chapterFromElement(element: Element, chapter: Chapter) {
         val urlElement = element.select("a").first()
 
-        chapter.setUrlWithoutDomain("/${urlElement.attr("href")}")
-        chapter.name = urlElement.text()
-        chapter.date_upload = element.select("span").first()?.text()?.let { parseChapterDate(it) } ?: 0
+        chapter.setUrlWithoutDomain(urlElement.attr("href"))
+        chapter.name = element.select("span.chapterLabel").first().text()?.let { it } ?: ""
+        chapter.date_upload = element.select("time").first()?.attr("datetime")?.let { parseChapterDate(it) } ?: 0
     }
 
     private fun parseChapterDate(dateAsString: String): Long {
-        val m = datePattern.matcher(dateAsString)
-
-        if (m.matches()) {
-            val amount = Integer.parseInt(m.group(1))
-            val unit = m.group(2)
-            val relation = m.group(3)
-
-            return Calendar.getInstance().apply {
-                add(dateFields[unit]!!, dateRelationFields[relation]!! * amount)
-            }.time.time
-        } else {
-            return 0
-        }
+        return SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").parse(dateAsString).time
     }
 
     override fun pageListParse(response: Response, pages: MutableList<Page>) {
         val document = response.asJsoup()
-        val url = response.request().url().toString().substringBeforeLast('/')
+        val fullUrl = response.request().url().toString()
+        val url = fullUrl.substringBeforeLast('/')
 
-        val series = document.select("input[name=series]").first().attr("value")
-        val chapter = document.select("input[name=chapter]").first().attr("value")
-        val index = document.select("input[name=index]").first().attr("value")
+        val series = document.select("input.IndexName").first().attr("value")
+        val chapter = document.select("span.CurChapter").first().text()
+        var index = ""
 
-        document.select("select[name=page] > option").forEach {
-            pages.add(Page(pages.size, "$url/?series=$series&chapter=$chapter&index=$index&page=${pages.size + 1}"))
+        val m = indexPattern.matcher(fullUrl)
+        if (m.find()) {
+            val indexNumber = m.group(1)
+            index = "-index-$indexNumber"
+        }
+
+        document.select("div.ContainerNav").first().select("select.PageSelect > option").forEach {
+            pages.add(Page(pages.size, "$url/$series-chapter-$chapter$index-page-${pages.size + 1}.html"))
         }
         pages.getOrNull(0)?.imageUrl = imageUrlParse(document)
     }
@@ -128,7 +166,7 @@ class Mangasee(override val id: Int) : ParsedOnlineSource() {
     override fun pageListParse(document: Document, pages: MutableList<Page>) {
     }
 
-    override fun imageUrlParse(document: Document) = document.select("div > a > img").attr("src")
+    override fun imageUrlParse(document: Document): String = document.select("img.CurImage").attr("src")
 
     // [...document.querySelectorAll("label.triStateCheckBox input")].map(el => `Filter("${el.getAttribute('name')}", "${el.nextSibling.textContent.trim()}")`).join(',\n')
     // http://mangasee.co/advanced-search/
@@ -171,20 +209,45 @@ class Mangasee(override val id: Int) : ParsedOnlineSource() {
             Filter("Yuri", "Yuri")
     )
 
-    override fun latestUpdatesInitialUrl(): String {
-        throw UnsupportedOperationException("not implemented")
+    override fun latestUpdatesInitialUrl(): String = "http://mangaseeonline.net/home/latest.request.php"
+
+    // Not used, overrides parent.
+    override fun latestUpdatesNextPageSelector(): String = ""
+
+    override fun latestUpdatesSelector(): String = "a.latestSeries"
+
+    override fun latestUpdatesRequest(page: MangasPage): Request {
+        if (page.page == 1) {
+            page.url = latestUpdatesInitialUrl()
+        }
+        val (body, requestUrl) = convertQueryToPost(page)
+        return POST(requestUrl, headers, body.build())
     }
 
-    override fun latestUpdatesNextPageSelector(): String {
-        throw UnsupportedOperationException("not implemented")
+    override fun latestUpdatesParse(response: Response, page: MangasPage) {
+        val document = response.asJsoup()
+        for (element in document.select(latestUpdatesSelector())) {
+            Manga.create(id).apply {
+                latestUpdatesFromElement(element, this)
+                page.mangas.add(this)
+            }
+        }
+
+        page.nextPageUrl = page.url
     }
 
     override fun latestUpdatesFromElement(element: Element, manga: Manga) {
-        throw UnsupportedOperationException("not implemented")
+        element.select("a.latestSeries").first().let {
+            val chapterUrl = it.attr("href")
+            val indexOfMangaUrl = chapterUrl.indexOf("-chapter-")
+            val indexOfLastPath = chapterUrl.lastIndexOf("/")
+            val mangaUrl = chapterUrl.substring(indexOfLastPath, indexOfMangaUrl)
+            val defaultText = it.select("p.clamp2").text()
+            val m = recentUpdatesPattern.matcher(defaultText)
+            val title = if (m.matches()) m.group(1) else defaultText
+            manga.setUrlWithoutDomain("/manga" + mangaUrl)
+            manga.title = title
+        }
     }
 
-    override fun latestUpdatesSelector(): String {
-        throw UnsupportedOperationException("not implemented")
-    }
-
-}
+}

app/src/main/java/eu/kanade/tachiyomi/data/source/online/english/Readmangatoday.kt

@@ -25,7 +25,7 @@ class Readmangatoday(override val id: Int) : ParsedOnlineSource() {
 
     override val lang: Language get() = EN
 
-    override val supportsLatest = false
+    override val supportsLatest = true
 
     override val client: OkHttpClient get() = network.cloudflareClient
 
@@ -39,8 +39,12 @@ class Readmangatoday(override val id: Int) : ParsedOnlineSource() {
 
     override fun popularMangaInitialUrl() = "$baseUrl/hot-manga/"
 
+    override fun latestUpdatesInitialUrl() = "$baseUrl/latest-releases/"
+
     override fun popularMangaSelector() = "div.hot-manga > div.style-list > div.box"
 
+    override fun latestUpdatesSelector() = "div.hot-manga > div.style-grid > div.box"
+
     override fun popularMangaFromElement(element: Element, manga: Manga) {
         element.select("div.title > h2 > a").first().let {
             manga.setUrlWithoutDomain(it.attr("href"))
@@ -48,8 +52,14 @@ class Readmangatoday(override val id: Int) : ParsedOnlineSource() {
         }
     }
 
+    override fun latestUpdatesFromElement(element: Element, manga: Manga) {
+        popularMangaFromElement(element, manga)
+    }
+
     override fun popularMangaNextPageSelector() = "div.hot-manga > ul.pagination > li > a:contains(»)"
 
+    override fun latestUpdatesNextPageSelector(): String = "div.hot-manga > ul.pagination > li > a:contains(»)"
+
     override fun searchMangaInitialUrl(query: String, filters: List<Filter>) =
             "$baseUrl/service/advanced_search"
 
@@ -183,21 +193,4 @@ class Readmangatoday(override val id: Int) : ParsedOnlineSource() {
             Filter("36", "Yaoi"),
             Filter("37", "Yuri")
     )
-
-    override fun latestUpdatesInitialUrl(): String {
-        throw UnsupportedOperationException("not implemented")
-    }
-
-    override fun latestUpdatesNextPageSelector(): String {
-        throw UnsupportedOperationException("not implemented")
-    }
-
-    override fun latestUpdatesFromElement(element: Element, manga: Manga) {
-        throw UnsupportedOperationException("not implemented")
-    }
-
-    override fun latestUpdatesSelector(): String {
-        throw UnsupportedOperationException("not implemented")
-    }
-
 }

app/src/main/java/eu/kanade/tachiyomi/data/source/online/russian/Mangachan.kt

@@ -1,12 +1,13 @@
 package eu.kanade.tachiyomi.data.source.online.russian
 
-import android.content.Context
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.source.Language
 import eu.kanade.tachiyomi.data.source.RU
+import eu.kanade.tachiyomi.data.source.model.MangasPage
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.data.source.online.ParsedOnlineSource
+import eu.kanade.tachiyomi.util.asJsoup
 import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
@@ -25,13 +26,25 @@ class Mangachan(override val id: Int) : ParsedOnlineSource() {
 
     override fun popularMangaInitialUrl() = "$baseUrl/mostfavorites"
 
-    override fun latestUpdatesInitialUrl() = "$baseUrl/manga/new"
+    override fun latestUpdatesInitialUrl() = "$baseUrl/newestch"
 
-    override fun searchMangaInitialUrl(query: String, filters: List<Filter>) = "$baseUrl/?do=search&subaction=search&story=$query"
+    override fun searchMangaInitialUrl(query: String, filters: List<Filter>): String {
+        if (query.isNotEmpty()) {
+            return "$baseUrl/?do=search&subaction=search&story=$query"
+        } else if (filters.isNotEmpty()) {
+            var genres = ""
+            filters.forEach { genres = genres + it.name + '+' }
+            return "$baseUrl/tags/${genres.dropLast(1)}"
+        } else {
+            return "$baseUrl/?do=search&subaction=search&story=$query"
+        }
+    }
 
     override fun popularMangaSelector() = "div.content_row"
 
-    override fun latestUpdatesSelector() = "div.content_row"
+    override fun latestUpdatesSelector() = "ul.area_rightNews li"
+
+    override fun searchMangaSelector() = popularMangaSelector()
 
     override fun popularMangaFromElement(element: Element, manga: Manga) {
         element.select("h2 > a").first().let {
@@ -41,20 +54,48 @@ class Mangachan(override val id: Int) : ParsedOnlineSource() {
     }
 
     override fun latestUpdatesFromElement(element: Element, manga: Manga) {
-        popularMangaFromElement(element, manga)
+        element.select("a:nth-child(1)").first().let {
+            manga.setUrlWithoutDomain(it.attr("href"))
+            manga.title = it.text()
+        }
     }
 
-    override fun popularMangaNextPageSelector() = "a:contains(Вперед)"
-
-    override fun latestUpdatesNextPageSelector() = "a:contains(Вперед)"
-
-    override fun searchMangaSelector() = popularMangaSelector()
-
     override fun searchMangaFromElement(element: Element, manga: Manga) {
         popularMangaFromElement(element, manga)
     }
 
-    override fun searchMangaNextPageSelector() = popularMangaNextPageSelector()
+    override fun popularMangaNextPageSelector() = "a:contains(Вперед)"
+
+    override fun latestUpdatesNextPageSelector() = popularMangaNextPageSelector()
+
+    override fun searchMangaNextPageSelector() = "a:contains(Далее)"
+
+    private fun searchGenresNextPageSelector() = popularMangaNextPageSelector()
+
+    override fun searchMangaParse(response: Response, page: MangasPage, query: String, filters: List<Filter>) {
+        val document = response.asJsoup()
+        for (element in document.select(searchMangaSelector())) {
+            Manga.create(id).apply {
+                searchMangaFromElement(element, this)
+                page.mangas.add(this)
+            }
+        }
+
+        searchMangaNextPageSelector().let { selector ->
+            if (page.nextPageUrl.isNullOrEmpty() && filters.isEmpty()) {
+                val onClick = document.select(selector).first()?.attr("onclick")
+                val pageNum = onClick?.substring(23, onClick.indexOf("); return(false)"))
+                page.nextPageUrl = searchMangaInitialUrl(query, emptyList()) + "&search_start=" + pageNum
+            }
+        }
+
+        searchGenresNextPageSelector().let { selector ->
+            if (page.nextPageUrl.isNullOrEmpty() && filters.isNotEmpty()) {
+                val url = document.select(selector).first()?.attr("href")
+                page.nextPageUrl = searchMangaInitialUrl(query, filters) + url
+            }
+        }
+    }
 
     override fun mangaDetailsParse(document: Document, manga: Manga) {
         val infoElement = document.select("table.mangatitle").first()
@@ -95,13 +136,74 @@ class Mangachan(override val id: Int) : ParsedOnlineSource() {
         val trimmedHtml = html.substring(beginIndex, endIndex).replace("\"", "")
         val pageUrls = trimmedHtml.split(',')
 
-        for ((i, url) in pageUrls.withIndex()) {
-            pages.add(Page(i, "", url))
-        }
+        pageUrls.mapIndexedTo(pages) { i, url -> Page(i, "", url) }
     }
 
     override fun pageListParse(document: Document, pages: MutableList<Page>) { }
 
     override fun imageUrlParse(document: Document) = ""
 
+    /* [...document.querySelectorAll("li.sidetag > a:nth-child(1)")].map((el,i) =>
+    *  { const link=el.getAttribute('href');const id=link.substr(6,link.length);
+    *  return `Filter("${id}", "${id}")` }).join(',\n')
+    *  on http://mangachan.me/
+    */
+    override fun getFilterList(): List<Filter> = listOf(
+            Filter("18_плюс", "18_плюс"),
+            Filter("bdsm", "bdsm"),
+            Filter("арт", "арт"),
+            Filter("биография", "биография"),
+            Filter("боевик", "боевик"),
+            Filter("боевые_искусства", "боевые_искусства"),
+            Filter("вампиры", "вампиры"),
+            Filter("веб", "веб"),
+            Filter("гарем", "гарем"),
+            Filter("гендерная_интрига", "гендерная_интрига"),
+            Filter("героическое_фэнтези", "героическое_фэнтези"),
+            Filter("детектив", "детектив"),
+            Filter("дзёсэй", "дзёсэй"),
+            Filter("додзинси", "додзинси"),
+            Filter("драма", "драма"),
+            Filter("игра", "игра"),
+            Filter("инцест", "инцест"),
+            Filter("искусство", "искусство"),
+            Filter("история", "история"),
+            Filter("киберпанк", "киберпанк"),
+            Filter("кодомо", "кодомо"),
+            Filter("комедия", "комедия"),
+            Filter("литРПГ", "литРПГ"),
+            Filter("махо-сёдзё", "махо-сёдзё"),
+            Filter("меха", "меха"),
+            Filter("мистика", "мистика"),
+            Filter("музыка", "музыка"),
+            Filter("научная_фантастика", "научная_фантастика"),
+            Filter("повседневность", "повседневность"),
+            Filter("постапокалиптика", "постапокалиптика"),
+            Filter("приключения", "приключения"),
+            Filter("психология", "психология"),
+            Filter("романтика", "романтика"),
+            Filter("самурайский_боевик", "самурайский_боевик"),
+            Filter("сборник", "сборник"),
+            Filter("сверхъестественное", "сверхъестественное"),
+            Filter("сказка", "сказка"),
+            Filter("спорт", "спорт"),
+            Filter("супергерои", "супергерои"),
+            Filter("сэйнэн", "сэйнэн"),
+            Filter("сёдзё", "сёдзё"),
+            Filter("сёдзё-ай", "сёдзё-ай"),
+            Filter("сёнэн", "сёнэн"),
+            Filter("сёнэн-ай", "сёнэн-ай"),
+            Filter("тентакли", "тентакли"),
+            Filter("трагедия", "трагедия"),
+            Filter("триллер", "триллер"),
+            Filter("ужасы", "ужасы"),
+            Filter("фантастика", "фантастика"),
+            Filter("фурри", "фурри"),
+            Filter("фэнтези", "фэнтези"),
+            Filter("школа", "школа"),
+            Filter("эротика", "эротика"),
+            Filter("юри", "юри"),
+            Filter("яой", "яой"),
+            Filter("ёнкома", "ёнкома")
+    )
 }

app/src/main/java/eu/kanade/tachiyomi/data/source/online/russian/Mintmanga.kt

@@ -1,6 +1,5 @@
 package eu.kanade.tachiyomi.data.source.online.russian
 
-import android.content.Context
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.source.Language
@@ -90,7 +89,7 @@ class Mintmanga(override val id: Int) : ParsedOnlineSource() {
         } ?: 0
     }
 
-    override fun parseChapterNumber(chapter: Chapter) {
+    override fun prepareNewChapter(chapter: Chapter, manga: Manga) {
         chapter.chapter_number = -2f
     }
 
@@ -115,9 +114,9 @@ class Mintmanga(override val id: Int) : ParsedOnlineSource() {
     override fun imageUrlParse(document: Document) = ""
 
     /* [...document.querySelectorAll("tr.advanced_option:nth-child(1) > td:nth-child(3) span.js-link")].map((el,i) => {
-    * const onClick=el.getAttribute('onclick');const id=onClick.substr(31,onClick.length-33);
-    * return `Filter("${id}", "${el.textContent.trim()}")` }).join(',\n')
-    * on http://mintmanga.com/search
+    *  const onClick=el.getAttribute('onclick');const id=onClick.substr(31,onClick.length-33);
+    *  return `Filter("${id}", "${el.textContent.trim()}")` }).join(',\n')
+    *  on http://mintmanga.com/search
     */
     override fun getFilterList(): List<Filter> = listOf(
             Filter("el_2220", "арт"),
@@ -163,5 +162,4 @@ class Mintmanga(override val id: Int) : ParsedOnlineSource() {
             Filter("el_1315", "юри"),
             Filter("el_1336", "яой")
     )
-
 }

app/src/main/java/eu/kanade/tachiyomi/data/source/online/russian/Readmanga.kt

@@ -1,6 +1,5 @@
 package eu.kanade.tachiyomi.data.source.online.russian
 
-import android.content.Context
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.source.Language
@@ -53,10 +52,7 @@ class Readmanga(override val id: Int) : ParsedOnlineSource() {
     override fun searchMangaSelector() = popularMangaSelector()
 
     override fun searchMangaFromElement(element: Element, manga: Manga) {
-        element.select("h3 > a").first().let {
-            manga.setUrlWithoutDomain(it.attr("href"))
-            manga.title = it.attr("title")
-        }
+        popularMangaFromElement(element, manga)
     }
 
     // max 200 results
@@ -93,7 +89,7 @@ class Readmanga(override val id: Int) : ParsedOnlineSource() {
         } ?: 0
     }
 
-    override fun parseChapterNumber(chapter: Chapter) {
+    override fun prepareNewChapter(chapter: Chapter, manga: Manga) {
         chapter.chapter_number = -2f
     }
 
@@ -118,9 +114,9 @@ class Readmanga(override val id: Int) : ParsedOnlineSource() {
     override fun imageUrlParse(document: Document) = ""
 
     /* [...document.querySelectorAll("tr.advanced_option:nth-child(1) > td:nth-child(3) span.js-link")].map((el,i) => {
-    * const onClick=el.getAttribute('onclick');const id=onClick.substr(31,onClick.length-33);
-    * return `Filter("${id}", "${el.textContent.trim()}")` }).join(',\n')
-    * on http://readmanga.me/search
+    *  const onClick=el.getAttribute('onclick');const id=onClick.substr(31,onClick.length-33);
+    *  return `Filter("${id}", "${el.textContent.trim()}")` }).join(',\n')
+    *  on http://readmanga.me/search
     */
     override fun getFilterList(): List<Filter> = listOf(
             Filter("el_5685", "арт"),
@@ -136,6 +132,7 @@ class Readmanga(override val id: Int) : ParsedOnlineSource() {
             Filter("el_2118", "драма"),
             Filter("el_2154", "игра"),
             Filter("el_2119", "история"),
+            Filter("el_8032", "киберпанк"),
             Filter("el_2137", "кодомо"),
             Filter("el_2136", "комедия"),
             Filter("el_2147", "махо-сёдзё"),
@@ -164,5 +161,4 @@ class Readmanga(override val id: Int) : ParsedOnlineSource() {
             Filter("el_2149", "этти"),
             Filter("el_2123", "юри")
     )
-
 }

app/src/main/java/eu/kanade/tachiyomi/data/updater/UpdateCheckerJob.kt

@@ -0,0 +1,62 @@
+package eu.kanade.tachiyomi.data.updater
+
+import android.support.v4.app.NotificationCompat
+import com.evernote.android.job.Job
+import com.evernote.android.job.JobManager
+import com.evernote.android.job.JobRequest
+import eu.kanade.tachiyomi.Constants.NOTIFICATION_UPDATER_ID
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.util.notificationManager
+
+class UpdateCheckerJob : Job() {
+
+    override fun onRunJob(params: Params): Result {
+        return GithubUpdateChecker()
+                .checkForUpdate()
+                .map { result ->
+                    if (result is GithubUpdateResult.NewUpdate) {
+                        val url = result.release.downloadLink
+
+                        NotificationCompat.Builder(context).update {
+                            setContentTitle(context.getString(R.string.app_name))
+                            setContentText(context.getString(R.string.update_check_notification_update_available))
+                            setSmallIcon(android.R.drawable.stat_sys_download_done)
+                            // Download action
+                            addAction(android.R.drawable.stat_sys_download_done,
+                                    context.getString(R.string.action_download),
+                                    UpdateNotificationReceiver.downloadApkIntent(context, url))
+                        }
+                    }
+                    Job.Result.SUCCESS
+                }
+                .onErrorReturn { Job.Result.FAILURE }
+                // Sadly, the task needs to be synchronous.
+                .toBlocking()
+                .single()
+    }
+
+    fun NotificationCompat.Builder.update(block: NotificationCompat.Builder.() -> Unit) {
+        block()
+        context.notificationManager.notify(NOTIFICATION_UPDATER_ID, build())
+    }
+
+    companion object {
+        const val TAG = "UpdateChecker"
+
+        fun setupTask() {
+            JobRequest.Builder(TAG)
+                    .setPeriodic(24 * 60 * 60 * 1000, 60 * 60 * 1000)
+                    .setRequiredNetworkType(JobRequest.NetworkType.CONNECTED)
+                    .setRequirementsEnforced(true)
+                    .setPersisted(true)
+                    .setUpdateCurrent(true)
+                    .build()
+                    .schedule()
+        }
+
+        fun cancelTask() {
+            JobManager.instance().cancelAllForTag(TAG)
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/updater/UpdateCheckerService.kt

@@ -1,80 +0,0 @@
-package eu.kanade.tachiyomi.data.updater
-
-import android.content.Context
-import android.support.v4.app.NotificationCompat
-import com.google.android.gms.gcm.*
-import eu.kanade.tachiyomi.Constants.NOTIFICATION_UPDATER_ID
-import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
-import eu.kanade.tachiyomi.util.notificationManager
-import uy.kohesive.injekt.Injekt
-import uy.kohesive.injekt.api.get
-
-class UpdateCheckerService : GcmTaskService() {
-
-    override fun onInitializeTasks() {
-        val preferences: PreferencesHelper = Injekt.get()
-        if (preferences.automaticUpdates()) {
-            setupTask(this)
-        }
-    }
-
-    override fun onRunTask(params: TaskParams): Int {
-        return checkVersion()
-    }
-
-    fun checkVersion(): Int {
-        return GithubUpdateChecker()
-                .checkForUpdate()
-                .map { result ->
-                    if (result is GithubUpdateResult.NewUpdate) {
-                        val url = result.release.downloadLink
-
-                        NotificationCompat.Builder(this).update {
-                            setContentTitle(getString(R.string.app_name))
-                            setContentText(getString(R.string.update_check_notification_update_available))
-                            setSmallIcon(android.R.drawable.stat_sys_download_done)
-                            // Download action
-                            addAction(android.R.drawable.stat_sys_download_done,
-                                    getString(R.string.action_download),
-                                    UpdateNotificationReceiver.downloadApkIntent(
-                                            this@UpdateCheckerService, url))
-                        }
-                    }
-                    GcmNetworkManager.RESULT_SUCCESS
-                }
-                .onErrorReturn { GcmNetworkManager.RESULT_FAILURE }
-                // Sadly, the task needs to be synchronous.
-                .toBlocking()
-                .single()
-    }
-
-    fun NotificationCompat.Builder.update(block: NotificationCompat.Builder.() -> Unit) {
-        block()
-        notificationManager.notify(NOTIFICATION_UPDATER_ID, build())
-    }
-
-    companion object {
-        fun setupTask(context: Context) {
-            val task = PeriodicTask.Builder()
-                    .setService(UpdateCheckerService::class.java)
-                    .setTag("Updater")
-                    // 24 hours
-                    .setPeriod(24 * 60 * 60)
-                    // Run between the last two hours
-                    .setFlex(2 * 60 * 60)
-                    .setRequiredNetwork(Task.NETWORK_STATE_CONNECTED)
-                    .setPersisted(true)
-                    .setUpdateCurrent(true)
-                    .build()
-
-            GcmNetworkManager.getInstance(context).schedule(task)
-        }
-
-        fun cancelTask(context: Context) {
-            GcmNetworkManager.getInstance(context).cancelAllTasks(UpdateCheckerService::class.java)
-        }
-
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/updater/UpdateDownloaderService.kt

@@ -106,15 +106,18 @@ class UpdateDownloaderService : IntentService(UpdateDownloaderService::class.jav
                 throw Exception("Unsuccessful response")
             }
 
+            val installIntent = UpdateNotificationReceiver.installApkIntent(ctx, apkFile.absolutePath)
+
             // Prompt the user to install the new update.
             NotificationCompat.Builder(this).update {
                 setContentTitle(getString(R.string.app_name))
                 setContentText(getString(R.string.update_check_notification_download_complete))
                 setSmallIcon(android.R.drawable.stat_sys_download_done)
                 // Install action
+                setContentIntent(installIntent)
                 addAction(R.drawable.ic_system_update_grey_24dp_img,
                         getString(R.string.action_install),
-                        UpdateNotificationReceiver.installApkIntent(ctx, apkFile.absolutePath))
+                        installIntent)
                 // Cancel action
                 addAction(R.drawable.ic_clear_grey_24dp_img,
                         getString(R.string.action_cancel),

app/src/main/java/eu/kanade/tachiyomi/ui/catalogue/CatalogueFragment.kt

@@ -3,10 +3,7 @@ package eu.kanade.tachiyomi.ui.catalogue
 import android.content.res.Configuration
 import android.os.Bundle
 import android.support.design.widget.Snackbar
-import android.support.v7.widget.GridLayoutManager
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.SearchView
-import android.support.v7.widget.Toolbar
+import android.support.v7.widget.*
 import android.view.*
 import android.view.animation.AnimationUtils
 import android.widget.ArrayAdapter
@@ -21,10 +18,8 @@ import eu.kanade.tachiyomi.ui.base.adapter.FlexibleViewHolder
 import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
 import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.ui.manga.MangaActivity
-import eu.kanade.tachiyomi.util.getResourceDrawable
 import eu.kanade.tachiyomi.util.snack
 import eu.kanade.tachiyomi.util.toast
-import eu.kanade.tachiyomi.widget.DividerItemDecoration
 import eu.kanade.tachiyomi.widget.EndlessScrollListener
 import eu.kanade.tachiyomi.widget.IgnoreFirstSpinnerListener
 import kotlinx.android.synthetic.main.fragment_catalogue.*
@@ -149,9 +144,7 @@ open class CatalogueFragment : BaseRxFragment<CataloguePresenter>(), FlexibleVie
         catalogue_list.adapter = adapter
         catalogue_list.layoutManager = llm
         catalogue_list.addOnScrollListener(listScrollListener)
-        catalogue_list.addItemDecoration(
-                DividerItemDecoration(context.theme.getResourceDrawable(R.attr.divider_drawable)))
-
+        catalogue_list.addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
         if (presenter.isListMode) {
             switcher.showNext()
         }

app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryPresenter.kt

@@ -1,9 +1,11 @@
 package eu.kanade.tachiyomi.ui.category
 
 import android.os.Bundle
+import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.database.models.Category
 import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
+import eu.kanade.tachiyomi.util.toast
 import rx.android.schedulers.AndroidSchedulers
 import uy.kohesive.injekt.injectLazy
 
@@ -15,57 +17,41 @@ import uy.kohesive.injekt.injectLazy
 class CategoryPresenter : BasePresenter<CategoryActivity>() {
 
     /**
-     * Used to connect to database
+     * Used to connect to database.
      */
-    val db: DatabaseHelper by injectLazy()
+    private val db: DatabaseHelper by injectLazy()
 
     /**
-     * List containing categories
+     * List containing categories.
      */
-    private var categories: List<Category>? = null
-
-    companion object {
-        /**
-         * The id of the restartable.
-         */
-        final private val GET_CATEGORIES = 1
-    }
+    private var categories: List<Category> = emptyList()
 
     override fun onCreate(savedState: Bundle?) {
         super.onCreate(savedState)
 
-        // Get categories as list
-        restartableLatestCache(GET_CATEGORIES,
-                {
-                    db.getCategories().asRxObservable()
-                            .doOnNext { categories -> this.categories = categories }
-                            .observeOn(AndroidSchedulers.mainThread())
-                }, CategoryActivity::setCategories)
-
-        // Start get categories as list task
-        start(GET_CATEGORIES)
+        db.getCategories().asRxObservable()
+                .doOnNext { categories = it }
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribeLatestCache(CategoryActivity::setCategories)
     }
 
-
     /**
      * Create category and add it to database
      *
      * @param name name of category
      */
     fun createCategory(name: String) {
+        // Do not allow duplicate categories.
+        if (categories.any { it.name.equals(name, true) }) {
+            context.toast(R.string.error_category_exists)
+            return
+        }
+
         // Create category.
         val cat = Category.create(name)
 
         // Set the new item in the last position.
-        var max = 0
-        if (categories != null) {
-            for (cat2 in categories!!) {
-                if (cat2.order > max) {
-                    max = cat2.order + 1
-                }
-            }
-        }
-        cat.order = max
+        cat.order = categories.map { it.order + 1 }.max() ?: 0
 
         // Insert into database.
         db.insertCategory(cat).asRxObservable().subscribe()
@@ -86,8 +72,8 @@ class CategoryPresenter : BasePresenter<CategoryActivity>() {
      * @param categories list of categories
      */
     fun reorderCategories(categories: List<Category>) {
-        for (i in categories.indices) {
-            categories[i].order = i
+        categories.forEachIndexed { i, category ->
+            category.order = i
         }
 
         db.insertCategories(categories).asRxObservable().subscribe()
@@ -100,6 +86,12 @@ class CategoryPresenter : BasePresenter<CategoryActivity>() {
      * @param name new name of category
      */
     fun renameCategory(category: Category, name: String) {
+        // Do not allow duplicate categories.
+        if (categories.any { it.name.equals(name, true) }) {
+            context.toast(R.string.error_category_exists)
+            return
+        }
+
         category.name = name
         db.insertCategory(category).asRxObservable().subscribe()
     }

app/src/main/java/eu/kanade/tachiyomi/ui/download/DownloadFragment.kt

@@ -6,6 +6,7 @@ import android.view.*
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.download.DownloadService
 import eu.kanade.tachiyomi.data.download.model.Download
+import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
 import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.util.plusAssign
@@ -30,21 +31,6 @@ class DownloadFragment : BaseRxFragment<DownloadPresenter>() {
      */
     private lateinit var adapter: DownloadAdapter
 
-    /**
-     * Menu item to start the queue.
-     */
-    private var startButton: MenuItem? = null
-
-    /**
-     * Menu item to pause the queue.
-     */
-    private var pauseButton: MenuItem? = null
-
-    /**
-     * Menu item to clear the queue.
-     */
-    private var clearButton: MenuItem? = null
-
     /**
      * Subscription list to be cleared during [onDestroyView].
      */
@@ -95,15 +81,15 @@ class DownloadFragment : BaseRxFragment<DownloadPresenter>() {
         recycler.setHasFixedSize(true)
 
         // Suscribe to changes
-        subscriptions += presenter.downloadManager.runningSubject
+        subscriptions += DownloadService.runningRelay
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe { onQueueStatusChange(it) }
 
-        subscriptions += presenter.getStatusObservable()
+        subscriptions += presenter.getDownloadStatusObservable()
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe { onStatusChange(it) }
 
-        subscriptions += presenter.getProgressObservable()
+        subscriptions += presenter.getDownloadProgressObservable()
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe { onUpdateDownloadedPages(it) }
     }
@@ -119,23 +105,17 @@ class DownloadFragment : BaseRxFragment<DownloadPresenter>() {
 
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
         inflater.inflate(R.menu.download_queue, menu)
+    }
 
+    override fun onPrepareOptionsMenu(menu: Menu) {
         // Set start button visibility.
-        startButton = menu.findItem(R.id.start_queue).apply {
-            isVisible = !isRunning && !presenter.downloadQueue.isEmpty()
-        }
+        menu.findItem(R.id.start_queue).isVisible = !isRunning && !presenter.downloadQueue.isEmpty()
 
         // Set pause button visibility.
-        pauseButton = menu.findItem(R.id.pause_queue).apply {
-            isVisible = isRunning
-        }
+        menu.findItem(R.id.pause_queue).isVisible = isRunning
 
         // Set clear button visibility.
-        clearButton = menu.findItem(R.id.clear_queue).apply {
-            if (!presenter.downloadQueue.isEmpty()) {
-                isVisible = true
-            }
-        }
+        menu.findItem(R.id.clear_queue).isVisible = !presenter.downloadQueue.isEmpty()
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
@@ -182,7 +162,7 @@ class DownloadFragment : BaseRxFragment<DownloadPresenter>() {
                 // Get the sum of percentages for all the pages.
                 .flatMap {
                     Observable.from(download.pages)
-                            .map { it.progress }
+                            .map(Page::progress)
                             .reduce { x, y -> x + y }
                 }
                 // Keep only the latest emission to avoid backpressure.
@@ -218,9 +198,7 @@ class DownloadFragment : BaseRxFragment<DownloadPresenter>() {
      */
     private fun onQueueStatusChange(running: Boolean) {
         isRunning = running
-        startButton?.isVisible = !running && !presenter.downloadQueue.isEmpty()
-        pauseButton?.isVisible = running
-        clearButton?.isVisible = !presenter.downloadQueue.isEmpty()
+        activity.supportInvalidateOptionsMenu()
 
         // Check if download queue is empty and update information accordingly.
         setInformationView()
@@ -232,13 +210,11 @@ class DownloadFragment : BaseRxFragment<DownloadPresenter>() {
      * @param downloads the downloads from the queue.
      */
     fun onNextDownloads(downloads: List<Download>) {
+        activity.supportInvalidateOptionsMenu()
+        setInformationView()
         adapter.setItems(downloads)
     }
 
-    fun onDownloadRemoved(position: Int) {
-        adapter.notifyItemRemoved(position)
-    }
-
     /**
      * Called when the progress of a download changes.
      *

app/src/main/java/eu/kanade/tachiyomi/ui/download/DownloadPresenter.kt

@@ -29,36 +29,21 @@ class DownloadPresenter : BasePresenter<DownloadFragment>() {
 
     override fun onCreate(savedState: Bundle?) {
         super.onCreate(savedState)
-        
-        Observable.just(ArrayList(downloadQueue))
-                .doOnNext { syncQueue(it) }
-                .subscribeLatestCache({ view, downloads ->
-                    view.onNextDownloads(downloads)
-                }, { view, error ->
+
+        downloadQueue.getUpdatedObservable()
+                .observeOn(AndroidSchedulers.mainThread())
+                .map { ArrayList(it) }
+                .subscribeLatestCache(DownloadFragment::onNextDownloads, { view, error ->
                     Timber.e(error)
                 })
     }
 
-    private fun syncQueue(queue: MutableList<Download>) {
-        add(downloadQueue.getRemovedObservable()
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe { download ->
-                    val position = queue.indexOf(download)
-                    if (position != -1) {
-                        queue.removeAt(position)
-
-                        @Suppress("DEPRECATION")
-                        view?.onDownloadRemoved(position)
-                    }
-                })
-    }
-
-    fun getStatusObservable(): Observable<Download> {
+    fun getDownloadStatusObservable(): Observable<Download> {
         return downloadQueue.getStatusObservable()
                 .startWith(downloadQueue.getActiveDownloads())
     }
 
-    fun getProgressObservable(): Observable<Download> {
+    fun getDownloadProgressObservable(): Observable<Download> {
         return downloadQueue.getProgressObservable()
                 .onBackpressureBuffer()
     }

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt

@@ -185,15 +185,10 @@ class LibraryPresenter : BasePresenter<LibraryFragment>() {
             }
 
             if (prefFilterDownloaded) {
-                val mangaDir = downloadManager.getAbsoluteMangaDirectory(source, manga)
+                val mangaDir = downloadManager.findMangaDir(source, manga)
 
-                if (mangaDir.exists()) {
-                    for (file in mangaDir.listFiles()) {
-                        if (file.isDirectory && file.listFiles().isNotEmpty()) {
-                            hasDownloaded = true
-                            break
-                        }
-                    }
+                if (mangaDir != null) {
+                    hasDownloaded = mangaDir.listFiles()?.any { it.isDirectory } ?: false
                 }
             }
 

app/src/main/java/eu/kanade/tachiyomi/ui/main/ChangelogDialogFragment.kt

@@ -9,17 +9,36 @@ import android.util.AttributeSet
 import com.afollestad.materialdialogs.MaterialDialog
 import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.library.LibraryUpdateJob
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.data.preference.getOrDefault
+import eu.kanade.tachiyomi.data.updater.UpdateCheckerJob
 import it.gmariotti.changelibs.library.view.ChangeLogRecyclerView
+import java.io.File
 
 class ChangelogDialogFragment : DialogFragment() {
 
     companion object {
-        fun show(preferences: PreferencesHelper, fragmentManager: FragmentManager) {
-            if (preferences.lastVersionCode().getOrDefault() < BuildConfig.VERSION_CODE) {
+        fun show(context: Context, preferences: PreferencesHelper, fm: FragmentManager) {
+            val oldVersion = preferences.lastVersionCode().getOrDefault()
+            if (oldVersion < BuildConfig.VERSION_CODE) {
                 preferences.lastVersionCode().set(BuildConfig.VERSION_CODE)
-                ChangelogDialogFragment().show(fragmentManager, "changelog")
+                ChangelogDialogFragment().show(fm, "changelog")
+
+                // TODO better upgrades management
+                if (oldVersion == 0) return
+
+                if (oldVersion < 14) {
+                    // Restore jobs after upgrading to evernote's job scheduler.
+                    if (BuildConfig.INCLUDE_UPDATER && preferences.automaticUpdates()) {
+                        UpdateCheckerJob.setupTask()
+                    }
+                    LibraryUpdateJob.setupTask()
+                }
+                if (oldVersion < 15) {
+                    // Delete internal chapter cache dir.
+                    File(context.cacheDir, "chapter_disk_cache").deleteRecursively()
+                }
             }
         }
     }
@@ -27,7 +46,7 @@ class ChangelogDialogFragment : DialogFragment() {
     override fun onCreateDialog(savedState: Bundle?): Dialog {
         val view = WhatsNewRecyclerView(context)
         return MaterialDialog.Builder(activity)
-                .title("Changelog")
+                .title(if (BuildConfig.DEBUG) "Notices" else "Changelog")
                 .customView(view, false)
                 .positiveText(android.R.string.yes)
                 .build()

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -11,8 +11,8 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.ui.backup.BackupFragment
 import eu.kanade.tachiyomi.ui.base.activity.BaseActivity
 import eu.kanade.tachiyomi.ui.catalogue.CatalogueFragment
-import eu.kanade.tachiyomi.ui.latest_updates.LatestUpdatesFragment
 import eu.kanade.tachiyomi.ui.download.DownloadFragment
+import eu.kanade.tachiyomi.ui.latest_updates.LatestUpdatesFragment
 import eu.kanade.tachiyomi.ui.library.LibraryFragment
 import eu.kanade.tachiyomi.ui.recent_updates.RecentChaptersFragment
 import eu.kanade.tachiyomi.ui.recently_read.RecentlyReadFragment
@@ -79,7 +79,7 @@ class MainActivity : BaseActivity() {
             setSelectedDrawerItem(startScreenId)
 
             // Show changelog if needed
-            ChangelogDialogFragment.show(preferences, supportFragmentManager)
+            ChangelogDialogFragment.show(this, preferences, supportFragmentManager)
         }
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersAdapter.kt

@@ -11,6 +11,13 @@ class ChaptersAdapter(val fragment: ChaptersFragment) : FlexibleAdapter<Chapters
         setHasStableIds(true)
     }
 
+    var items: List<ChapterModel>
+        get() = mItems
+        set(value) {
+            mItems = value
+            notifyDataSetChanged()
+        }
+
     override fun updateDataSet(param: String) {
     }
 
@@ -32,8 +39,4 @@ class ChaptersAdapter(val fragment: ChaptersFragment) : FlexibleAdapter<Chapters
         return mItems[position].id!!
     }
 
-    fun setItems(chapters: List<ChapterModel>) {
-        mItems = chapters
-        notifyDataSetChanged()
-    }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersFragment.kt

@@ -6,6 +6,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.support.v4.app.DialogFragment
 import android.support.v7.view.ActionMode
+import android.support.v7.widget.DividerItemDecoration
 import android.support.v7.widget.LinearLayoutManager
 import android.view.*
 import com.afollestad.materialdialogs.MaterialDialog
@@ -19,10 +20,8 @@ import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
 import eu.kanade.tachiyomi.ui.manga.MangaActivity
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
 import eu.kanade.tachiyomi.util.getCoordinates
-import eu.kanade.tachiyomi.util.getResourceDrawable
 import eu.kanade.tachiyomi.util.toast
 import eu.kanade.tachiyomi.widget.DeletingChaptersDialog
-import eu.kanade.tachiyomi.widget.DividerItemDecoration
 import kotlinx.android.synthetic.main.fragment_manga_chapters.*
 import nucleus.factory.RequiresPresenter
 import timber.log.Timber
@@ -67,8 +66,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
 
         recycler.adapter = adapter
         recycler.layoutManager = LinearLayoutManager(activity)
-        recycler.addItemDecoration(DividerItemDecoration(
-                context.theme.getResourceDrawable(R.attr.divider_drawable)))
+        recycler.addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
         recycler.setHasFixedSize(true)
 
         swipe_refresh.setOnRefreshListener { fetchChapters() }
@@ -123,11 +121,13 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         val menuFilterRead = menu.findItem(R.id.action_filter_read)
         val menuFilterUnread = menu.findItem(R.id.action_filter_unread)
         val menuFilterDownloaded = menu.findItem(R.id.action_filter_downloaded)
+        val menuFilterBookmarked = menu.findItem(R.id.action_filter_bookmarked)
 
         // Set correct checkbox values.
         menuFilterRead.isChecked = presenter.onlyRead()
         menuFilterUnread.isChecked = presenter.onlyUnread()
         menuFilterDownloaded.isChecked = presenter.onlyDownloaded()
+        menuFilterBookmarked.isChecked = presenter.onlyBookmarked()
 
         if (presenter.onlyRead())
             //Disable unread filter option if read filter is enabled.
@@ -156,6 +156,10 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 item.isChecked = !item.isChecked
                 presenter.setDownloadedFilter(item.isChecked)
             }
+            R.id.action_filter_bookmarked -> {
+                item.isChecked = !item.isChecked
+                presenter.setBookmarkedFilter(item.isChecked)
+            }
             R.id.action_filter_empty -> {
                 presenter.removeFilters()
                 activity.supportInvalidateOptionsMenu()
@@ -178,7 +182,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
             initialFetchChapters()
 
         destroyActionModeIfNeeded()
-        adapter.setItems(chapters)
+        adapter.items = chapters
     }
 
     private fun initialFetchChapters() {
@@ -263,7 +267,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 .itemsCallback { dialog, view, i, charSequence ->
 
                     fun getUnreadChaptersSorted() = presenter.chapters
-                            .filter { !it.read && !it.isDownloaded }
+                            .filter { !it.read && it.status == Download.NOT_DOWNLOADED }
                             .distinctBy { it.name }
                             .sortedByDescending { it.source_order }
 
@@ -356,7 +360,11 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
     }
 
     fun markPreviousAsRead(chapter: ChapterModel) {
-        presenter.markPreviousChaptersAsRead(chapter)
+        val chapters = if (presenter.sortDescending()) adapter.items.reversed() else adapter.items
+        val chapterPos = chapters.indexOf(chapter)
+        if (chapterPos != -1) {
+            presenter.markChaptersRead(chapters.take(chapterPos), true)
+        }
     }
 
     fun downloadChapters(chapters: List<ChapterModel>) {
@@ -364,6 +372,11 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         presenter.downloadChapters(chapters)
     }
 
+    fun bookmarkChapters(chapters: List<ChapterModel>, bookmarked: Boolean) {
+        destroyActionModeIfNeeded()
+        presenter.bookmarkChapters(chapters, bookmarked)
+    }
+
     fun deleteChapters(chapters: List<ChapterModel>) {
         destroyActionModeIfNeeded()
         DeletingChaptersDialog().show(childFragmentManager, DeletingChaptersDialog.TAG)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersHolder.kt

@@ -21,6 +21,7 @@ class ChaptersHolder(
 
     private val readColor = view.context.theme.getResourceColor(android.R.attr.textColorHint)
     private val unreadColor = view.context.theme.getResourceColor(android.R.attr.textColorPrimary)
+    private val bookmarkedColor = view.context.theme.getResourceColor(R.attr.colorAccent)
     private val decimalFormat = DecimalFormat("#.###", DecimalFormatSymbols().apply { decimalSeparator = '.' })
     private val df = DateFormat.getDateInstance(DateFormat.SHORT)
 
@@ -43,7 +44,10 @@ class ChaptersHolder(
             }
             else -> chapter.name
         }
+
+        // Set correct text color
         chapter_title.setTextColor(if (chapter.read) readColor else unreadColor)
+        if (chapter.bookmark) chapter_title.setTextColor(bookmarkedColor)
 
         if (chapter.date_upload > 0) {
             chapter_date.text = df.format(Date(chapter.date_upload))
@@ -84,6 +88,10 @@ class ChaptersHolder(
             popup.menu.findItem(R.id.action_delete).isVisible = true
         }
 
+        // Hide bookmark if bookmark
+        popup.menu.findItem(R.id.action_bookmark).isVisible = !chapter.bookmark
+        popup.menu.findItem(R.id.action_remove_bookmark).isVisible = chapter.bookmark
+
         // Hide mark as unread when the chapter is unread
         if (!chapter.read && chapter.last_page_read == 0) {
             popup.menu.findItem(R.id.action_mark_as_unread).isVisible = false
@@ -101,6 +109,8 @@ class ChaptersHolder(
             with(adapter.fragment) {
                 when (menuItem.itemId) {
                     R.id.action_download -> downloadChapters(chapterList)
+                    R.id.action_bookmark -> bookmarkChapters(chapterList, true)
+                    R.id.action_remove_bookmark -> bookmarkChapters(chapterList, false)
                     R.id.action_delete -> deleteChapters(chapterList)
                     R.id.action_mark_as_read -> markAsRead(chapterList)
                     R.id.action_mark_as_unread -> markAsUnread(chapterList)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersPresenter.kt

@@ -132,6 +132,9 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
                     chapters.map { it.toModel() }
                 }
                 .doOnNext { chapters ->
+                    // Find downloaded chapters
+                    setDownloadedChapters(chapters)
+
                     // Store the last emission
                     this.chapters = chapters
 
@@ -157,16 +160,25 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         if (download != null) {
             // If there's an active download, assign it.
             model.download = download
-        } else {
-            // Otherwise ask the manager if the chapter is downloaded and assign it to the status.
-            model.status = if (downloadManager.isChapterDownloaded(source, manga, this))
-                Download.DOWNLOADED
-            else
-                Download.NOT_DOWNLOADED
         }
         return model
     }
 
+    /**
+     * Finds and assigns the list of downloaded chapters.
+     *
+     * @param chapters the list of chapter from the database.
+     */
+    private fun setDownloadedChapters(chapters: List<ChapterModel>) {
+        val files = downloadManager.findMangaDir(source, manga)?.listFiles() ?: return
+        val cached = mutableMapOf<Chapter, String>()
+        files.mapNotNull { it.name }
+                .mapNotNull { name -> chapters.find {
+                    name == cached.getOrPut(it) { downloadManager.getChapterDirName(it) }
+                } }
+                .forEach { it.status = Download.DOWNLOADED }
+    }
+
     /**
      * Requests an updated list of chapters from the source.
      */
@@ -200,7 +212,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Applies the view filters to the list of chapters obtained from the database.
-     *
      * @param chapters the list of chapters from the database
      * @return an observable of the list of chapters filtered and sorted.
      */
@@ -215,6 +226,9 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         if (onlyDownloaded()) {
             observable = observable.filter { it.isDownloaded }
         }
+        if (onlyBookmarked()) {
+            observable = observable.filter { it.bookmark }
+        }
         val sortFunction: (Chapter, Chapter) -> Int = when (manga.sorting) {
             Manga.SORTING_SOURCE -> when (sortDescending()) {
                 true  -> { c1, c2 -> c1.source_order.compareTo(c2.source_order) }
@@ -231,7 +245,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Called when a download for the active manga changes status.
-     *
      * @param download the download whose status changed.
      */
     fun onDownloadStatusChange(download: Download) {
@@ -258,7 +271,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Mark the selected chapter list as read/unread.
-     *
      * @param selectedChapters the list of selected chapters.
      * @param read whether to mark chapters as read or unread.
      */
@@ -276,23 +288,8 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
                 .subscribe()
     }
 
-    /**
-     * Mark the previous chapters to the selected one as read.
-     *
-     * @param chapter the selected chapter.
-     */
-    fun markPreviousChaptersAsRead(chapter: ChapterModel) {
-        Observable.from(chapters)
-                .filter { it.isRecognizedNumber && it.chapter_number < chapter.chapter_number }
-                .doOnNext { it.read = true }
-                .toList()
-                .flatMap { db.updateChaptersProgress(it).asRxObservable() }
-                .subscribe()
-    }
-
     /**
      * Downloads the given list of chapters with the manager.
-     *
      * @param chapters the list of chapters to download.
      */
     fun downloadChapters(chapters: List<ChapterModel>) {
@@ -300,16 +297,26 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         downloadManager.downloadChapters(manga, chapters)
     }
 
+    /**
+     * Bookmarks the given list of chapters.
+     * @param selectedChapters the list of chapters to bookmark.
+     */
+    fun bookmarkChapters(selectedChapters: List<ChapterModel>, bookmarked: Boolean) {
+        Observable.from(selectedChapters)
+                .doOnNext { chapter ->
+                    chapter.bookmark = bookmarked
+                }
+                .toList()
+                .flatMap { db.updateChaptersProgress(it).asRxObservable() }
+                .subscribeOn(Schedulers.io())
+                .subscribe()
+    }
+
     /**
      * Deletes the given list of chapter.
-     *
      * @param chapters the list of chapters to delete.
      */
     fun deleteChapters(chapters: List<ChapterModel>) {
-        val wasRunning = downloadManager.isRunning
-        if (wasRunning) {
-            DownloadService.stop(context)
-        }
         Observable.from(chapters)
                 .doOnNext { deleteChapter(it) }
                 .toList()
@@ -318,9 +325,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribeFirst({ view, result ->
                     view.onChaptersDeleted()
-                    if (wasRunning) {
-                        DownloadService.start(context)
-                    }
                 }, { view, error ->
                     view.onChaptersDeletedError(error)
                 })
@@ -328,11 +332,10 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Deletes a chapter from disk. This method is called in a background thread.
-     *
      * @param chapter the chapter to delete.
      */
     private fun deleteChapter(chapter: ChapterModel) {
-        downloadManager.queue.del(chapter)
+        downloadManager.queue.remove(chapter)
         downloadManager.deleteChapter(source, manga, chapter)
         chapter.status = Download.NOT_DOWNLOADED
         chapter.download = null
@@ -349,7 +352,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Sets the read filter and requests an UI update.
-     *
      * @param onlyUnread whether to display only unread chapters or all chapters.
      */
     fun setUnreadFilter(onlyUnread: Boolean) {
@@ -360,7 +362,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Sets the read filter and requests an UI update.
-     *
      * @param onlyRead whether to display only read chapters or all chapters.
      */
     fun setReadFilter(onlyRead: Boolean) {
@@ -371,7 +372,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Sets the download filter and requests an UI update.
-     *
      * @param onlyDownloaded whether to display only downloaded chapters or all chapters.
      */
     fun setDownloadedFilter(onlyDownloaded: Boolean) {
@@ -380,19 +380,29 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         refreshChapters()
     }
 
+    /**
+     * Sets the bookmark filter and requests an UI update.
+     * @param onlyBookmarked whether to display only bookmarked chapters or all chapters.
+     */
+    fun setBookmarkedFilter(onlyBookmarked: Boolean) {
+        manga.bookmarkedFilter = if (onlyBookmarked) Manga.SHOW_BOOKMARKED else Manga.SHOW_ALL
+        db.updateFlags(manga).executeAsBlocking()
+        refreshChapters()
+    }
+
     /**
      * Removes all filters and requests an UI update.
      */
     fun removeFilters() {
         manga.readFilter = Manga.SHOW_ALL
         manga.downloadedFilter = Manga.SHOW_ALL
+        manga.bookmarkedFilter = Manga.SHOW_ALL
         db.updateFlags(manga).executeAsBlocking()
         refreshChapters()
     }
 
     /**
      * Sets the active display mode.
-     *
      * @param mode the mode to set.
      */
     fun setDisplayMode(mode: Int) {
@@ -402,7 +412,6 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
 
     /**
      * Sets the sorting method and requests an UI update.
-     *
      * @param sort the sorting mode.
      */
     fun setSorting(sort: Int) {
@@ -418,6 +427,13 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         return manga.downloadedFilter == Manga.SHOW_DOWNLOADED
     }
 
+    /**
+     * Whether the display only downloaded filter is enabled.
+     */
+    fun onlyBookmarked(): Boolean {
+        return manga.bookmarkedFilter == Manga.SHOW_BOOKMARKED
+    }
+
     /**
      * Whether the display only unread filter is enabled.
      */

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoFragment.kt

@@ -184,10 +184,9 @@ class MangaInfoFragment : BaseRxFragment<MangaInfoPresenter>() {
             val url = source.mangaDetailsRequest(presenter.manga).url().toString()
             val sharingIntent = Intent(Intent.ACTION_SEND).apply {
                 type = "text/plain"
-                putExtra(android.content.Intent.EXTRA_SUBJECT, presenter.manga.title)
                 putExtra(android.content.Intent.EXTRA_TEXT, resources.getString(R.string.share_text, presenter.manga.title, url))
             }
-            startActivity(Intent.createChooser(sharingIntent, resources.getText(R.string.share_subject)))
+            startActivity(Intent.createChooser(sharingIntent, resources.getText(R.string.action_share)))
         } catch (e: Exception) {
             context.toast(e.message)
         }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoader.kt

@@ -70,14 +70,15 @@ class ChapterLoader(
     private fun retrievePageList(chapter: ReaderChapter) = Observable.just(chapter)
             .flatMap {
                 // Check if the chapter is downloaded.
-                chapter.isDownloaded = downloadManager.isChapterDownloaded(source, manga, chapter)
+                chapter.isDownloaded = downloadManager.findChapterDir(source, manga, chapter) != null
 
-                // Fetch the page list from disk.
-                if (chapter.isDownloaded)
-                    Observable.just(downloadManager.getSavedPageList(source, manga, chapter)!!)
-                // Fetch the page list from cache or fallback to network
-                else
+                if (chapter.isDownloaded) {
+                    // Fetch the page list from disk.
+                    downloadManager.buildPageList(source, manga, chapter)
+                } else {
+                    // Fetch the page list from cache or fallback to network
                     source.fetchPageList(chapter)
+                }
             }
             .doOnNext { pages ->
                 chapter.pages = pages
@@ -85,21 +86,11 @@ class ChapterLoader(
             }
 
     private fun loadPages(chapter: ReaderChapter) {
-        if (chapter.isDownloaded) {
-            loadDownloadedPages(chapter)
-        } else {
+        if (!chapter.isDownloaded) {
             loadOnlinePages(chapter)
         }
     }
 
-    private fun loadDownloadedPages(chapter: ReaderChapter) {
-        val chapterDir = downloadManager.getAbsoluteChapterDirectory(source, manga, chapter)
-        subscriptions += Observable.from(chapter.pages!!)
-                .flatMap { downloadManager.getDownloadedImage(it, chapterDir) }
-                .subscribeOn(Schedulers.io())
-                .subscribe()
-    }
-
     private fun loadOnlinePages(chapter: ReaderChapter) {
         chapter.pages?.let { pages ->
             val startPage = chapter.requestedPage

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -110,7 +110,7 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
 
         setMenuVisibility(menuVisible)
 
-        maxBitmapSize = Math.min(2048, GLUtil.getMaxTextureSize())
+        maxBitmapSize = GLUtil.getMaxTextureSize()
 
         left_chapter.setOnClickListener {
             if (viewer != null) {
@@ -224,6 +224,20 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
         toast(error.message)
     }
 
+    fun onLongPress(page: Page) {
+        MaterialDialog.Builder(this)
+                .title(getString(R.string.options))
+                .items(R.array.reader_image_options)
+                .itemsIds(R.array.reader_image_options_values)
+                .itemsCallback { materialDialog, view, i, charSequence ->
+                    when (i) {
+                        0 -> presenter.setCover(page)
+                        1 -> shareImage(page)
+                        2 -> presenter.savePage(page)
+                    }
+                }.show()
+    }
+
     fun onChapterAppendError() {
         // Ignore
     }
@@ -250,7 +264,7 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
         val activePage = pages.getOrElse(chapter.requestedPage) { pages.first() }
 
         viewer?.onPageListReady(chapter, activePage)
-        setActiveChapter(chapter, activePage.pageNumber)
+        setActiveChapter(chapter, activePage.index)
     }
 
     fun onEnterChapter(chapter: ReaderChapter, currentPage: Int) {
@@ -317,7 +331,7 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
     fun onPageChanged(page: Page) {
         presenter.onPageChanged(page)
 
-        val pageNumber = page.pageNumber + 1
+        val pageNumber = page.number
         val pageCount = page.chapter.pages!!.size
         page_number.text = "$pageNumber/$pageCount"
         if (page_seekbar.rotation != 180f) {
@@ -325,7 +339,7 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
         } else {
             right_page_text.text = "$pageNumber"
         }
-        page_seekbar.progress = page.pageNumber
+        page_seekbar.progress = page.index
     }
 
     fun gotoPageInCurrentChapter(pageIndex: Int) {
@@ -455,6 +469,23 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
         }
     }
 
+    /**
+     * Start a share intent that lets user share image
+     *
+     * @param page page object containing image information.
+     */
+    fun shareImage(page: Page) {
+        if (page.status != Page.READY)
+            return
+
+        val intent = Intent(Intent.ACTION_SEND).apply {
+            putExtra(Intent.EXTRA_STREAM, page.uri)
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
+            type = "image/*"
+        }
+        startActivity(Intent.createChooser(intent, getString(R.string.action_share)))
+    }
+
     /**
      * Sets the brightness of the screen. Range is [-75, 100].
      * From -75 to -1 a semi-transparent black view is shown at the top with the minimum brightness.

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt

@@ -1,7 +1,11 @@
 package eu.kanade.tachiyomi.ui.reader
 
 import android.os.Bundle
+import android.os.Environment
+import android.webkit.MimeTypeMap
+import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.cache.ChapterCache
+import eu.kanade.tachiyomi.data.cache.CoverCache
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.History
@@ -15,8 +19,11 @@ import eu.kanade.tachiyomi.data.source.SourceManager
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.data.source.online.OnlineSource
 import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
+import eu.kanade.tachiyomi.ui.reader.notification.ImageNotifier
+import eu.kanade.tachiyomi.util.DiskUtil
 import eu.kanade.tachiyomi.util.RetryWithDelay
 import eu.kanade.tachiyomi.util.SharedData
+import eu.kanade.tachiyomi.util.toast
 import rx.Observable
 import rx.Subscription
 import rx.android.schedulers.AndroidSchedulers
@@ -24,13 +31,13 @@ import rx.schedulers.Schedulers
 import timber.log.Timber
 import uy.kohesive.injekt.injectLazy
 import java.io.File
+import java.net.URLConnection
 import java.util.*
 
 /**
  * Presenter of [ReaderActivity].
  */
 class ReaderPresenter : BasePresenter<ReaderActivity>() {
-
     /**
      * Preferences.
      */
@@ -61,6 +68,11 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
      */
     val chapterCache: ChapterCache by injectLazy()
 
+    /**
+     * Cover cache.
+     */
+    val coverCache: CoverCache by injectLazy()
+
     /**
      * Manga being read.
      */
@@ -332,9 +344,9 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
     fun retryPage(page: Page?) {
         if (page != null && source is OnlineSource) {
             page.status = Page.QUEUE
-            if (page.imagePath != null) {
-                val file = File(page.imagePath)
-                chapterCache.removeFileFromCache(file.name)
+            val uri = page.uri
+            if (uri != null && !page.chapter.isDownloaded) {
+                chapterCache.removeFileFromCache(uri.encodedPath.substringAfterLast('/'))
             }
             loader.retryPage(page)
         }
@@ -351,27 +363,27 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
         val pages = chapter.pages ?: return
 
         Observable.fromCallable {
-            // Chapters with 1 page don't trigger page changes, so mark them as read.
-            if (pages.size == 1) {
-                chapter.read = true
-            }
-
             // Cache current page list progress for online chapters to allow a faster reopen
             if (!chapter.isDownloaded) {
                 source.let { if (it is OnlineSource) it.savePageList(chapter, pages) }
             }
 
-            if (chapter.read) {
-                val removeAfterReadSlots = prefs.removeAfterReadSlots()
-                when (removeAfterReadSlots) {
-                // Setting disabled
-                    -1 -> { /**Empty function**/ }
-                // Remove current read chapter
-                    0 -> deleteChapter(chapter, manga)
-                // Remove previous chapter specified by user in settings.
-                    else -> getAdjacentChaptersStrategy(chapter, removeAfterReadSlots)
-                            .first?.let { deleteChapter(it, manga) }
+            try {
+                if (chapter.read) {
+                    val removeAfterReadSlots = prefs.removeAfterReadSlots()
+                    when (removeAfterReadSlots) {
+                        // Setting disabled
+                        -1 -> { /* Empty function */ }
+                        // Remove current read chapter
+                        0 -> deleteChapter(chapter, manga)
+                        // Remove previous chapter specified by user in settings.
+                        else -> getAdjacentChaptersStrategy(chapter, removeAfterReadSlots)
+                                .first?.let { deleteChapter(it, manga) }
+                    }
                 }
+            } catch (error: Exception) {
+                // TODO find out why it crashes
+                Timber.e(error)
             }
 
             db.updateChapterProgress(chapter).executeAsBlocking()
@@ -384,8 +396,8 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
                 Timber.e(error)
             }
         }
-        .subscribeOn(Schedulers.io())
-        .subscribe()
+                .subscribeOn(Schedulers.io())
+                .subscribe()
     }
 
     /**
@@ -395,7 +407,7 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
      */
     fun onPageChanged(page: Page) {
         val chapter = page.chapter
-        chapter.last_page_read = page.pageNumber
+        chapter.last_page_read = page.index
         if (chapter.pages!!.last() === page) {
             chapter.read = true
         }
@@ -508,4 +520,81 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
         db.insertManga(manga).executeAsBlocking()
     }
 
+    /**
+     * Update cover with page file.
+     */
+    internal fun setCover(page: Page) {
+        if (page.status != Page.READY)
+            return
+
+        try {
+            if (manga.favorite) {
+                if (manga.thumbnail_url != null) {
+                    val input = context.contentResolver.openInputStream(page.uri)
+                    coverCache.copyToCache(manga.thumbnail_url!!, input)
+                    context.toast(R.string.cover_updated)
+                } else {
+                    throw Exception("Image url not found")
+                }
+            } else {
+                context.toast(R.string.notification_first_add_to_library)
+            }
+        } catch (error: Exception) {
+            context.toast(R.string.notification_cover_update_failed)
+            Timber.e(error)
+        }
+    }
+
+    /**
+     * Save page to local storage.
+     */
+    internal fun savePage(page: Page) {
+        if (page.status != Page.READY)
+            return
+
+        // Used to show image notification.
+        val imageNotifier = ImageNotifier(context)
+
+        // Remove the notification if it already exists (user feedback).
+        imageNotifier.onClear()
+
+        // Pictures directory.
+        val pictureDirectory = Environment.getExternalStorageDirectory().absolutePath +
+                File.separator + Environment.DIRECTORY_PICTURES +
+                File.separator + context.getString(R.string.app_name)
+
+        // Copy file in background.
+        Observable
+                .fromCallable {
+                    // Folder where the image will be saved.
+                    val destDir = File(pictureDirectory)
+                    destDir.mkdirs()
+
+                    // Find out file mime type.
+                    val mime = context.contentResolver.getType(page.uri)
+                    ?: context.contentResolver.openInputStream(page.uri).buffered().use {
+                        URLConnection.guessContentTypeFromStream(it)
+                    }
+
+                    // Build destination file.
+                    val ext = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime) ?: "jpg"
+                    val filename = DiskUtil.buildValidFilename(
+                            "${manga.title} - ${chapter.name}") + " - ${page.number}.$ext"
+                    val destFile = File(destDir, filename)
+
+                    context.contentResolver.openInputStream(page.uri).use { input ->
+                        destFile.outputStream().use { output ->
+                            input.copyTo(output)
+                        }
+                    }
+
+                    imageNotifier.onComplete(destFile)
+                }
+                .subscribeOn(Schedulers.io())
+                .subscribe({},
+                        { error ->
+                            Timber.e(error)
+                            imageNotifier.onError(error.message)
+                        })
+    }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/notification/ImageNotificationReceiver.kt

@@ -0,0 +1,108 @@
+package eu.kanade.tachiyomi.ui.reader.notification
+
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.support.v4.content.FileProvider
+import eu.kanade.tachiyomi.BuildConfig
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.util.notificationManager
+import java.io.File
+
+/**
+ * The BroadcastReceiver of [ImageNotifier]
+ * Intent calls should be made from this class.
+ */
+class ImageNotificationReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        when (intent.action) {
+            ACTION_SHARE_IMAGE -> {
+                shareImage(context, intent.getStringExtra(EXTRA_FILE_LOCATION))
+                context.notificationManager.cancel(intent.getIntExtra(NOTIFICATION_ID, 5))
+            }
+            ACTION_SHOW_IMAGE ->
+                showImage(context, intent.getStringExtra(EXTRA_FILE_LOCATION))
+            ACTION_DELETE_IMAGE -> {
+                deleteImage(intent.getStringExtra(EXTRA_FILE_LOCATION))
+                context.notificationManager.cancel(intent.getIntExtra(NOTIFICATION_ID, 5))
+            }
+        }
+    }
+
+    /**
+     * Called to delete image
+     * @param path path of file
+     */
+    private fun deleteImage(path: String) {
+        val file = File(path)
+        if (file.exists()) file.delete()
+    }
+
+    /**
+     * Called to start share intent to share image
+     * @param context context of application
+     * @param path path of file
+     */
+    private fun shareImage(context: Context, path: String) {
+        val intent = Intent(Intent.ACTION_SEND).apply {
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_MULTIPLE_TASK
+            putExtra(Intent.EXTRA_STREAM, Uri.parse(path))
+            type = "image/*"
+        }
+        context.startActivity(Intent.createChooser(intent, context.getString(R.string.action_share)))
+    }
+
+    /**
+     * Called to show image in gallery application
+     * @param context context of application
+     * @param path path of file
+     */
+    private fun showImage(context: Context, path: String) {
+        val intent = Intent(Intent.ACTION_VIEW).apply {
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_MULTIPLE_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
+            val uri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", File(path))
+            setDataAndType(uri, "image/*")
+        }
+        context.startActivity(intent)
+    }
+
+    companion object {
+        private const val ACTION_SHARE_IMAGE = "eu.kanade.SHARE_IMAGE"
+
+        private const val ACTION_SHOW_IMAGE = "eu.kanade.SHOW_IMAGE"
+
+        private const val ACTION_DELETE_IMAGE = "eu.kanade.DELETE_IMAGE"
+
+        private const val EXTRA_FILE_LOCATION = "file_location"
+
+        private const val NOTIFICATION_ID = "notification_id"
+
+        internal fun shareImageIntent(context: Context, path: String, notificationId: Int): PendingIntent {
+            val intent = Intent(context, ImageNotificationReceiver::class.java).apply {
+                action = ACTION_SHARE_IMAGE
+                putExtra(EXTRA_FILE_LOCATION, path)
+                putExtra(NOTIFICATION_ID, notificationId)
+            }
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+
+        internal fun showImageIntent(context: Context, path: String): PendingIntent {
+            val intent = Intent(context, ImageNotificationReceiver::class.java).apply {
+                action = ACTION_SHOW_IMAGE
+                putExtra(EXTRA_FILE_LOCATION, path)
+            }
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+
+        internal fun deleteImageIntent(context: Context, path: String, notificationId: Int): PendingIntent {
+            val intent = Intent(context, ImageNotificationReceiver::class.java).apply {
+                action = ACTION_DELETE_IMAGE
+                putExtra(EXTRA_FILE_LOCATION, path)
+                putExtra(NOTIFICATION_ID, notificationId)
+            }
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/ui/reader/notification/ImageNotifier.kt

@@ -0,0 +1,102 @@
+package eu.kanade.tachiyomi.ui.reader.notification
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.support.v4.app.NotificationCompat
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.engine.DiskCacheStrategy
+import eu.kanade.tachiyomi.Constants
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.util.notificationManager
+import java.io.File
+
+/**
+ * Class used to show BigPictureStyle notifications
+ */
+class ImageNotifier(private val context: Context) {
+    /**
+     * Notification builder.
+     */
+    private val notificationBuilder = NotificationCompat.Builder(context)
+
+    /**
+     * Id of the notification.
+     */
+    private val notificationId: Int
+        get() = Constants.NOTIFICATION_DOWNLOAD_IMAGE_ID
+
+    /**
+     * Called when image download/copy is complete. This method must be called in a background
+     * thread.
+     *
+     * @param file image file containing downloaded page image.
+     */
+    fun onComplete(file: File) {
+        val bitmap = Glide.with(context)
+                .load(file)
+                .asBitmap()
+                .diskCacheStrategy(DiskCacheStrategy.NONE)
+                .skipMemoryCache(true)
+                .into(720, 1280)
+                .get()
+
+        if (bitmap != null) {
+            showCompleteNotification(file, bitmap)
+        } else {
+            onError(null)
+        }
+    }
+
+    private fun showCompleteNotification(file: File, image: Bitmap) {
+        with(notificationBuilder) {
+            setContentTitle(context.getString(R.string.picture_saved))
+            setSmallIcon(R.drawable.ic_insert_photo_white_24dp)
+            setStyle(NotificationCompat.BigPictureStyle().bigPicture(image))
+            setLargeIcon(image)
+            setAutoCancel(true)
+            // Clear old actions if they exist
+            if (!mActions.isEmpty())
+                mActions.clear()
+
+            setContentIntent(ImageNotificationReceiver.showImageIntent(context, file.absolutePath))
+            // Share action
+            addAction(R.drawable.ic_share_grey_24dp,
+                    context.getString(R.string.action_share),
+                    ImageNotificationReceiver.shareImageIntent(context, file.absolutePath, notificationId))
+            // Delete action
+            addAction(R.drawable.ic_delete_grey_24dp,
+                    context.getString(R.string.action_delete),
+                    ImageNotificationReceiver.deleteImageIntent(context, file.absolutePath, notificationId))
+            updateNotification()
+
+        }
+    }
+
+    /**
+     * Clears the notification message.
+     */
+    fun onClear() {
+        context.notificationManager.cancel(notificationId)
+    }
+
+    private fun updateNotification() {
+        // Displays the progress bar on notification
+        context.notificationManager.notify(notificationId, notificationBuilder.build())
+    }
+
+
+    /**
+     * Called on error while downloading image.
+     * @param error string containing error information.
+     */
+    fun onError(error: String?) {
+        // Create notification
+        with(notificationBuilder) {
+            setContentTitle(context.getString(R.string.download_notifier_title_error))
+            setContentText(error ?: context.getString(R.string.unknown_error))
+            setSmallIcon(android.R.drawable.ic_menu_report_image)
+        }
+        updateNotification()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/base/BaseReader.kt

@@ -16,14 +16,19 @@ abstract class BaseReader : BaseFragment() {
 
     companion object {
         /**
-         * Rapid decoder.
+         * Image decoder.
          */
-        const val RAPID_DECODER = 0
+        const val IMAGE_DECODER = 0
 
         /**
          * Skia decoder.
          */
         const val SKIA_DECODER = 1
+
+        /**
+         * Rapid decoder.
+         */
+        const val RAPID_DECODER = 2
     }
 
     /**
@@ -90,7 +95,7 @@ abstract class BaseReader : BaseFragment() {
 
         // Active chapter has changed.
         if (oldChapter.id != newChapter.id) {
-            readerActivity.onEnterChapter(newPage.chapter, newPage.pageNumber)
+            readerActivity.onEnterChapter(newPage.chapter, newPage.index)
         }
         // Request next chapter only when the conditions are met.
         if (pages.size - position < 5 && chapters.last().id == newChapter.id
@@ -120,7 +125,7 @@ abstract class BaseReader : BaseFragment() {
      */
     fun getPageIndex(search: Page): Int {
         for ((index, page) in pages.withIndex()) {
-            if (page.pageNumber == search.pageNumber && page.chapter.id == search.chapter.id) {
+            if (page.index == search.index && page.chapter.id == search.chapter.id) {
                 return index
             }
         }
@@ -200,16 +205,17 @@ abstract class BaseReader : BaseFragment() {
      */
     fun setDecoderClass(value: Int) {
         when (value) {
-            RAPID_DECODER -> {
-                // Using Skia because Rapid isn't stable. Rapid is still used for region decoding.
-                // https://github.com/inorichi/tachiyomi/issues/97
-                //bitmapDecoderClass = RapidImageDecoder.class;
-                regionDecoderClass = RapidImageRegionDecoder::class.java
-                bitmapDecoderClass = SkiaImageDecoder::class.java
+            IMAGE_DECODER -> {
+                bitmapDecoderClass = IImageDecoder::class.java
+                regionDecoderClass = IImageRegionDecoder::class.java
             }
             SKIA_DECODER -> {
-                regionDecoderClass = SkiaImageRegionDecoder::class.java
                 bitmapDecoderClass = SkiaImageDecoder::class.java
+                regionDecoderClass = SkiaImageRegionDecoder::class.java
+            }
+            RAPID_DECODER -> {
+                bitmapDecoderClass = RapidImageDecoder::class.java
+                regionDecoderClass = RapidImageRegionDecoder::class.java
             }
         }
     }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/base/PageDecodeErrorLayout.kt

@@ -1,72 +1,40 @@
 package eu.kanade.tachiyomi.ui.reader.viewer.base
 
-import android.content.Context
-import android.content.Intent
 import android.net.Uri
 import android.support.v4.content.ContextCompat
-import android.view.Gravity
 import android.view.View
-import android.view.ViewGroup
-import android.view.ViewGroup.LayoutParams.WRAP_CONTENT
-import android.widget.Button
-import android.widget.LinearLayout
-import android.widget.TextView
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
+import kotlinx.android.synthetic.main.page_decode_error.view.*
 
-class PageDecodeErrorLayout(context: Context) : LinearLayout(context) {
-
-    /**
-     * Text color for black theme.
-     */
-    private val whiteColor = ContextCompat.getColor(context, R.color.textColorSecondaryDark)
-
-    /**
-     * Text color for white theme.
-     */
-    private val blackColor = ContextCompat.getColor(context, R.color.textColorSecondaryLight)
+class PageDecodeErrorLayout(
+        val view: View,
+        val page: Page,
+        val theme: Int,
+        val retryListener: () -> Unit
+) {
 
     init {
-        orientation = LinearLayout.VERTICAL
-        setGravity(Gravity.CENTER)
+        val textColor = if (theme == ReaderActivity.BLACK_THEME)
+            ContextCompat.getColor(view.context, R.color.textColorSecondaryDark)
+        else
+            ContextCompat.getColor(view.context, R.color.textColorSecondaryLight)
+
+        view.decode_error_text.setTextColor(textColor)
+
+        view.decode_retry.setOnClickListener {
+            retryListener()
+        }
+
+        view.decode_open_browser.setOnClickListener {
+            val intent = android.content.Intent(android.content.Intent.ACTION_VIEW, Uri.parse(page.imageUrl))
+            view.context.startActivity(intent)
+        }
+
+        if (page.imageUrl == null) {
+            view.decode_open_browser.visibility = View.GONE
+        }
     }
 
-    constructor(context: Context, page: Page, theme: Int, retryListener: () -> Unit) : this(context) {
-
-        // Error message.
-        TextView(context).apply {
-            gravity = Gravity.CENTER
-            setText(R.string.decode_image_error)
-            setTextColor(if (theme == ReaderActivity.BLACK_THEME) whiteColor else blackColor)
-            addView(this)
-        }
-
-        // Retry button.
-        Button(context).apply {
-            layoutParams = ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT)
-            setText(R.string.action_retry)
-            setOnClickListener {
-                removeAllViews()
-                retryListener()
-            }
-            addView(this)
-        }
-
-        // Open in browser button.
-        Button(context).apply {
-            layoutParams = ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT)
-            setText(R.string.action_open_in_browser)
-            setOnClickListener { v ->
-                val intent = Intent(Intent.ACTION_VIEW, Uri.parse(page.imageUrl))
-                context.startActivity(intent)
-            }
-
-            if (page.imageUrl == null) {
-                visibility = View.GONE
-            }
-            addView(this)
-        }
-
-    }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PageView.kt

@@ -8,15 +8,14 @@ import android.view.View
 import android.widget.FrameLayout
 import com.davemorrissey.labs.subscaleview.ImageSource
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+import com.hippo.unifile.UniFile
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
 import eu.kanade.tachiyomi.ui.reader.viewer.base.PageDecodeErrorLayout
-import eu.kanade.tachiyomi.ui.reader.viewer.pager.PagerReader.Companion.ALIGN_CENTER
-import eu.kanade.tachiyomi.ui.reader.viewer.pager.PagerReader.Companion.ALIGN_LEFT
-import eu.kanade.tachiyomi.ui.reader.viewer.pager.PagerReader.Companion.ALIGN_RIGHT
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.horizontal.RightToLeftReader
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.vertical.VerticalReader
+import eu.kanade.tachiyomi.util.inflate
 import kotlinx.android.synthetic.main.chapter_image.view.*
 import kotlinx.android.synthetic.main.item_pager_reader.view.*
 import rx.Observable
@@ -24,7 +23,6 @@ import rx.Subscription
 import rx.android.schedulers.AndroidSchedulers
 import rx.subjects.PublishSubject
 import rx.subjects.SerializedSubject
-import java.io.File
 import java.util.concurrent.TimeUnit
 
 class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null)
@@ -33,8 +31,12 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     /**
      * Page of a chapter.
      */
-    var page: Page? = null
-        private set
+    lateinit var page: Page
+
+    /**
+     * Subscription for status changes of the page.
+     */
+    private var statusSubscription: Subscription? = null
 
     /**
      * Subscription for progress changes of the page.
@@ -42,11 +44,11 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     private var progressSubscription: Subscription? = null
 
     /**
-     * Subscription for status changes of the page.
+     * Layout of decode error.
      */
-    private var statusSubscription: Subscription? = null
+    private var decodeErrorLayout: View? = null
 
-    fun initialize(reader: PagerReader, page: Page?) {
+    fun initialize(reader: PagerReader, page: Page) {
         val activity = reader.activity as ReaderActivity
 
         when (activity.readerTheme) {
@@ -71,19 +73,11 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
             setOnTouchListener { v, motionEvent -> reader.gestureDetector.onTouchEvent(motionEvent) }
             setOnImageEventListener(object : SubsamplingScaleImageView.DefaultOnImageEventListener() {
                 override fun onReady() {
-                    when (reader.zoomType) {
-                        ALIGN_LEFT -> setScaleAndCenter(scale, PointF(0f, 0f))
-                        ALIGN_RIGHT -> setScaleAndCenter(scale, PointF(sWidth.toFloat(), 0f))
-                        ALIGN_CENTER -> {
-                            val newCenter = center
-                            newCenter.y = 0f
-                            setScaleAndCenter(scale, newCenter)
-                        }
-                    }
+                    onImageDecoded(reader)
                 }
 
                 override fun onImageLoadError(e: Exception) {
-                    onImageDecodeError(activity)
+                    onImageDecodeError(reader)
                 }
             })
         }
@@ -95,21 +89,15 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
             true
         }
 
-        if (page != null) {
-            this.page = page
-            observeStatus()
-        }
+        this.page = page
+        observeStatus()
     }
 
-    fun cleanup() {
+    override fun onDetachedFromWindow() {
         unsubscribeProgress()
         unsubscribeStatus()
         image_view.setOnTouchListener(null)
         image_view.setOnImageEventListener(null)
-    }
-
-    override fun onDetachedFromWindow() {
-        cleanup()
         super.onDetachedFromWindow()
     }
 
@@ -120,7 +108,6 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
      */
     private fun observeStatus() {
         statusSubscription?.unsubscribe()
-        val page = page ?: return
 
         val statusSubject = SerializedSubject(PublishSubject.create<Int>())
         page.setStatusSubject(statusSubject)
@@ -135,7 +122,6 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
      */
     private fun observeProgress() {
         progressSubscription?.unsubscribe()
-        val page = page ?: return
 
         progressSubscription = Observable.interval(100, TimeUnit.MILLISECONDS)
                 .map { page.progress }
@@ -154,18 +140,18 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
      */
     private fun processStatus(status: Int) {
         when (status) {
-            Page.QUEUE -> hideError()
-            Page.LOAD_PAGE -> onLoading()
+            Page.QUEUE -> setQueued()
+            Page.LOAD_PAGE -> setLoading()
             Page.DOWNLOAD_IMAGE -> {
                 observeProgress()
-                onDownloading()
+                setDownloading()
             }
             Page.READY -> {
-                onReady()
+                setImage()
                 unsubscribeProgress()
             }
             Page.ERROR -> {
-                onError()
+                setError()
                 unsubscribeProgress()
             }
         }
@@ -175,7 +161,7 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
      * Unsubscribes from the status subscription.
      */
     private fun unsubscribeStatus() {
-        page?.setStatusSubject(null)
+        page.setStatusSubject(null)
         statusSubscription?.unsubscribe()
         statusSubscription = null
     }
@@ -188,10 +174,23 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
         progressSubscription = null
     }
 
+    /**
+     * Called when the page is queued.
+     */
+    private fun setQueued() {
+        progress_container.visibility = View.VISIBLE
+        progress_text.visibility = View.INVISIBLE
+        retry_button.visibility = View.GONE
+        decodeErrorLayout?.let {
+            removeView(it)
+            decodeErrorLayout = null
+        }
+    }
+
     /**
      * Called when the page is loading.
      */
-    private fun onLoading() {
+    private fun setLoading() {
         progress_container.visibility = View.VISIBLE
         progress_text.visibility = View.VISIBLE
         progress_text.setText(R.string.downloading)
@@ -200,7 +199,7 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     /**
      * Called when the page is downloading.
      */
-    private fun onDownloading() {
+    private fun setDownloading() {
         progress_container.visibility = View.VISIBLE
         progress_text.visibility = View.VISIBLE
     }
@@ -208,42 +207,64 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     /**
      * Called when the page is ready.
      */
-    private fun onReady() {
-        page?.imagePath?.let { path ->
-            if (File(path).exists()) {
-                image_view.setImage(ImageSource.uri(path))
-                progress_container.visibility = View.GONE
-            } else {
-                page?.status = Page.ERROR
-            }
+    private fun setImage() {
+        val uri = page.uri
+        if (uri == null) {
+            page.status = Page.ERROR
+            return
         }
+
+        val file = UniFile.fromUri(context, uri)
+        if (!file.exists()) {
+            page.status = Page.ERROR
+            return
+        }
+
+        progress_text.visibility = View.INVISIBLE
+        image_view.setImage(ImageSource.uri(file.uri))
     }
 
     /**
      * Called when the page has an error.
      */
-    private fun onError() {
+    private fun setError() {
         progress_container.visibility = View.GONE
         retry_button.visibility = View.VISIBLE
     }
 
     /**
-     * Hides the error layout.
+     * Called when the image is decoded and going to be displayed.
      */
-    private fun hideError() {
-        retry_button.visibility = View.GONE
+    private fun onImageDecoded(reader: PagerReader) {
+        progress_container.visibility = View.GONE
+
+        with(image_view) {
+            when (reader.zoomType) {
+                PagerReader.ALIGN_LEFT -> setScaleAndCenter(scale, PointF(0f, 0f))
+                PagerReader.ALIGN_RIGHT -> setScaleAndCenter(scale, PointF(sWidth.toFloat(), 0f))
+                PagerReader.ALIGN_CENTER -> setScaleAndCenter(scale, center.apply { y = 0f })
+            }
+        }
     }
 
     /**
      * Called when an image fails to decode.
      */
-    private fun onImageDecodeError(activity: ReaderActivity) {
-        page?.let { page ->
-            val errorLayout = PageDecodeErrorLayout(context, page, activity.readerTheme,
-                    { activity.presenter.retryPage(page) })
+    private fun onImageDecodeError(reader: PagerReader) {
+        progress_container.visibility = View.GONE
 
-            addView(errorLayout)
-        }
+        if (decodeErrorLayout != null || !reader.isAdded) return
+
+        val activity = reader.activity as ReaderActivity
+
+        val layout = inflate(R.layout.page_decode_error)
+        PageDecodeErrorLayout(layout, page, activity.readerTheme, {
+            if (reader.isAdded) {
+                activity.presenter.retryPage(page)
+            }
+        })
+        decodeErrorLayout = layout
+        addView(layout)
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerReader.kt

@@ -11,6 +11,7 @@ import eu.kanade.tachiyomi.ui.reader.ReaderChapter
 import eu.kanade.tachiyomi.ui.reader.viewer.base.BaseReader
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.horizontal.LeftToRightReader
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.horizontal.RightToLeftReader
+import eu.kanade.tachiyomi.util.toast
 import rx.subscriptions.CompositeSubscription
 
 /**
@@ -185,6 +186,16 @@ abstract class PagerReader : BaseReader() {
                 }
                 return true
             }
+
+            override fun onLongPress(e: MotionEvent?) {
+                if (isAdded) {
+                    val page = adapter.pages.getOrNull(pager.currentItem)
+                    if (page != null)
+                        readerActivity.onLongPress(page)
+                    else
+                        context.toast(getString(R.string.unknown_error))
+                }
+            }
         })
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerReaderAdapter.kt

@@ -15,7 +15,7 @@ class PagerReaderAdapter(private val reader: PagerReader) : ViewPagerAdapter() {
     /**
      * Pages stored in the adapter.
      */
-    var pages: List<Page>? = null
+    var pages: List<Page> = emptyList()
         set(value) {
             field = value
             notifyDataSetChanged()
@@ -23,17 +23,15 @@ class PagerReaderAdapter(private val reader: PagerReader) : ViewPagerAdapter() {
 
     override fun createView(container: ViewGroup, position: Int): View {
         val view = container.inflate(R.layout.item_pager_reader) as PageView
-        view.initialize(reader, pages?.getOrNull(position))
+        view.initialize(reader, pages[position])
         return view
     }
 
     /**
      * Returns the number of pages.
-     *
-     * @return the number of pages or 0 if the list is null.
      */
     override fun getCount(): Int {
-        return pages?.size ?: 0
+        return pages.size
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonAdapter.kt

@@ -72,7 +72,7 @@ class WebtoonAdapter(val fragment: WebtoonReader) : RecyclerView.Adapter<Webtoon
      * @param holder the holder to recycle.
      */
     override fun onViewRecycled(holder: WebtoonHolder) {
-        holder.unsubscribeStatus()
+        holder.onRecycle()
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonHolder.kt

@@ -6,16 +6,20 @@ import android.view.View
 import android.view.ViewGroup
 import com.davemorrissey.labs.subscaleview.ImageSource
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+import com.hippo.unifile.UniFile
+import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
 import eu.kanade.tachiyomi.ui.reader.viewer.base.PageDecodeErrorLayout
+import eu.kanade.tachiyomi.util.inflate
 import kotlinx.android.synthetic.main.chapter_image.view.*
 import kotlinx.android.synthetic.main.item_webtoon_reader.view.*
+import rx.Observable
 import rx.Subscription
 import rx.android.schedulers.AndroidSchedulers
 import rx.subjects.PublishSubject
 import rx.subjects.SerializedSubject
-import java.io.File
+import java.util.concurrent.TimeUnit
 
 /**
  * Holder for webtoon reader for a single page of a chapter.
@@ -38,10 +42,15 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
      */
     private var statusSubscription: Subscription? = null
 
+    /**
+     * Subscription for progress changes of the page.
+     */
+    private var progressSubscription: Subscription? = null
+
     /**
      * Layout of decode error.
      */
-    private var decodeErrorLayout: PageDecodeErrorLayout? = null
+    private var decodeErrorLayout: View? = null
 
     init {
         with(view.image_view) {
@@ -56,9 +65,8 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
             setVerticalScrollingParent(true)
             setOnTouchListener(adapter.touchListener)
             setOnImageEventListener(object : SubsamplingScaleImageView.DefaultOnImageEventListener() {
-                override fun onImageLoaded() {
-                    // When the image is loaded, reset the minimum height to avoid gaps
-                    view.frame_container.minimumHeight = 30
+                override fun onReady() {
+                    onImageDecoded()
                 }
 
                 override fun onImageLoadError(e: Exception) {
@@ -67,16 +75,9 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
             })
         }
 
-        // Avoid to create a lot of view holders taking twice the screen height,
-        // saving memory and a possible OOM. When the first image is loaded in this holder,
-        // the minimum size will be removed.
-        // Doing this we get sequential holder instantiation.
-        view.frame_container.minimumHeight = view.resources.displayMetrics.heightPixels * 2
+        view.progress_container.minimumHeight = view.resources.displayMetrics.heightPixels * 2
 
-        // Leave some space between progress bars
-        view.progress.minimumHeight = 300
-
-        view.frame_container.setOnTouchListener(adapter.touchListener)
+        view.setOnTouchListener(adapter.touchListener)
         view.retry_button.setOnTouchListener { v, event ->
             if (event.action == MotionEvent.ACTION_UP) {
                 readerActivity.presenter.retryPage(page)
@@ -92,13 +93,23 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
      * @param page the page to bind.
      */
     fun onSetValues(page: Page) {
+        this.page = page
+        observeStatus()
+    }
+
+    /**
+     * Called when the view is recycled and added to the view pool.
+     */
+    fun onRecycle() {
+        unsubscribeStatus()
+        unsubscribeProgress()
         decodeErrorLayout?.let {
             (view as ViewGroup).removeView(it)
             decodeErrorLayout = null
         }
-
-        this.page = page
-        observeStatus()
+        view.image_view.recycle()
+        view.image_view.visibility = View.GONE
+        view.progress_container.visibility = View.VISIBLE
     }
 
     /**
@@ -107,17 +118,38 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
      * @see processStatus
      */
     private fun observeStatus() {
-        page?.let { page ->
-            val statusSubject = SerializedSubject(PublishSubject.create<Int>())
-            page.setStatusSubject(statusSubject)
+        unsubscribeStatus()
 
-            statusSubscription?.unsubscribe()
-            statusSubscription = statusSubject.startWith(page.status)
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribe { processStatus(it) }
+        val page = page ?: return
 
-            webtoonReader.subscriptions.add(statusSubscription)
-        }
+        val statusSubject = SerializedSubject(PublishSubject.create<Int>())
+        page.setStatusSubject(statusSubject)
+
+        statusSubscription = statusSubject.startWith(page.status)
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe { processStatus(it) }
+
+        addSubscription(statusSubscription)
+    }
+
+    /**
+     * Observes the progress of the page and updates view.
+     */
+    private fun observeProgress() {
+        unsubscribeProgress()
+
+        val page = page ?: return
+
+        progressSubscription = Observable.interval(100, TimeUnit.MILLISECONDS)
+                .map { page.progress }
+                .distinctUntilChanged()
+                .onBackpressureLatest()
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe { progress ->
+                    view.progress_text.text = view.context.getString(R.string.download_progress, progress)
+                }
+
+        addSubscription(progressSubscription)
     }
 
     /**
@@ -127,104 +159,138 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
      */
     private fun processStatus(status: Int) {
         when (status) {
-            Page.QUEUE -> onQueue()
-            Page.LOAD_PAGE -> onLoading()
-            Page.DOWNLOAD_IMAGE -> onLoading()
-            Page.READY -> onReady()
-            Page.ERROR -> onError()
-        }
-    }
-
-    /**
-     * Unsubscribes from the status subscription.
-     */
-    fun unsubscribeStatus() {
-        statusSubscription?.unsubscribe()
-        statusSubscription = null
-    }
-
-    /**
-     * Called when the page is loading.
-     */
-    private fun onLoading() {
-        setRetryButtonVisible(false)
-        setImageVisible(false)
-        setProgressVisible(true)
-    }
-
-    /**
-     * Called when the page is ready.
-     */
-    private fun onReady() {
-        setRetryButtonVisible(false)
-        setProgressVisible(false)
-        setImageVisible(true)
-
-        page?.imagePath?.let { path ->
-            if (File(path).exists()) {
-                view.image_view.setImage(ImageSource.uri(path))
-                view.progress.visibility = View.GONE
-            } else {
-                page?.status = Page.ERROR
+            Page.QUEUE -> setQueued()
+            Page.LOAD_PAGE -> setLoading()
+            Page.DOWNLOAD_IMAGE -> {
+                observeProgress()
+                setDownloading()
+            }
+            Page.READY -> {
+                setImage()
+                unsubscribeProgress()
+            }
+            Page.ERROR -> {
+                setError()
+                unsubscribeProgress()
             }
         }
     }
 
     /**
-     * Called when the page has an error.
+     * Adds a subscription to a list of subscriptions that will automatically unsubscribe when the
+     * activity or the reader is destroyed.
      */
-    private fun onError() {
-        setImageVisible(false)
-        setProgressVisible(false)
-        setRetryButtonVisible(true)
+    private fun addSubscription(subscription: Subscription?) {
+        webtoonReader.subscriptions.add(subscription)
+    }
+
+    /**
+     * Removes a subscription from the list of subscriptions.
+     */
+    private fun removeSubscription(subscription: Subscription?) {
+        subscription?.let { webtoonReader.subscriptions.remove(it) }
+    }
+
+    /**
+     * Unsubscribes from the status subscription.
+     */
+    private fun unsubscribeStatus() {
+        page?.setStatusSubject(null)
+        removeSubscription(statusSubscription)
+        statusSubscription = null
+    }
+
+    /**
+     * Unsubscribes from the progress subscription.
+     */
+    private fun unsubscribeProgress() {
+        removeSubscription(progressSubscription)
+        progressSubscription = null
     }
 
     /**
      * Called when the page is queued.
      */
-    private fun onQueue() {
-        setImageVisible(false)
-        setRetryButtonVisible(false)
-        setProgressVisible(false)
+    private fun setQueued() = with(view) {
+        progress_container.visibility = View.VISIBLE
+        progress_text.visibility = View.INVISIBLE
+        retry_container.visibility = View.GONE
+        decodeErrorLayout?.let {
+            (view as ViewGroup).removeView(it)
+            decodeErrorLayout = null
+        }
+    }
+
+    /**
+     * Called when the page is loading.
+     */
+    private fun setLoading() = with(view) {
+        progress_container.visibility = View.VISIBLE
+        progress_text.visibility = View.VISIBLE
+        progress_text.setText(R.string.downloading)
+    }
+
+    /**
+     * Called when the page is downloading
+     */
+    private fun setDownloading() = with(view) {
+        progress_container.visibility = View.VISIBLE
+        progress_text.visibility = View.VISIBLE
+    }
+
+    /**
+     * Called when the page is ready.
+     */
+    private fun setImage() = with(view) {
+        val uri = page?.uri
+        if (uri == null) {
+            page?.status = Page.ERROR
+            return
+        }
+
+        val file = UniFile.fromUri(context, uri)
+        if (!file.exists()) {
+            page?.status = Page.ERROR
+            return
+        }
+
+        progress_text.visibility = View.INVISIBLE
+        image_view.visibility = View.VISIBLE
+        image_view.setImage(ImageSource.uri(file.uri))
+    }
+
+    /**
+     * Called when the page has an error.
+     */
+    private fun setError() = with(view) {
+        progress_container.visibility = View.GONE
+        retry_container.visibility = View.VISIBLE
+    }
+
+    /**
+     * Called when the image is decoded and going to be displayed.
+     */
+    private fun onImageDecoded() {
+        view.progress_container.visibility = View.GONE
     }
 
     /**
      * Called when the image fails to decode.
      */
     private fun onImageDecodeError() {
-        page?.let { page ->
-            decodeErrorLayout = PageDecodeErrorLayout(view.context, page, readerActivity.readerTheme,
-                    { readerActivity.presenter.retryPage(page) })
+        view.progress_container.visibility = View.GONE
 
-            (view as ViewGroup).addView(decodeErrorLayout)
-        }
-    }
+        val page = page ?: return
+        if (decodeErrorLayout != null || !webtoonReader.isAdded) return
 
-    /**
-     * Sets the visibility of the progress bar.
-     *
-     * @param visible whether to show it or not.
-     */
-    private fun setProgressVisible(visible: Boolean) {
-        view.progress.visibility = if (visible) View.VISIBLE else View.GONE
-    }
-
-    /**
-     * Sets the visibility of the image view.
-     *
-     * @param visible whether to show it or not.
-     */
-    private fun setImageVisible(visible: Boolean) {
-        view.image_view.visibility = if (visible) View.VISIBLE else View.GONE
-    }
-
-    /**
-     * Sets the visibility of the retry button.
-     *
-     * @param visible whether to show it or not.
-     */
-    private fun setRetryButtonVisible(visible: Boolean) {
-        view.retry_button.visibility = if (visible) View.VISIBLE else View.GONE
+        val layout = (view as ViewGroup).inflate(R.layout.page_decode_error)
+        PageDecodeErrorLayout(layout, page, readerActivity.readerTheme, {
+            if (webtoonReader.isAdded) {
+                readerActivity.presenter.retryPage(page)
+            }
+        })
+        decodeErrorLayout = layout
+        view.addView(layout)
     }
 
     /**

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonReader.kt

@@ -6,9 +6,11 @@ import android.view.*
 import android.view.GestureDetector.SimpleOnGestureListener
 import android.view.ViewGroup.LayoutParams.MATCH_PARENT
 import android.view.ViewGroup.LayoutParams.WRAP_CONTENT
+import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.source.model.Page
 import eu.kanade.tachiyomi.ui.reader.ReaderChapter
 import eu.kanade.tachiyomi.ui.reader.viewer.base.BaseReader
+import eu.kanade.tachiyomi.util.toast
 import eu.kanade.tachiyomi.widget.PreCachingLayoutManager
 import rx.subscriptions.CompositeSubscription
 
@@ -114,7 +116,7 @@ class WebtoonReader : BaseReader() {
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
-        val savedPosition = pages.getOrNull(layoutManager.findFirstVisibleItemPosition())?.pageNumber ?: 0
+        val savedPosition = pages.getOrNull(layoutManager.findFirstVisibleItemPosition())?.index ?: 0
         outState.putInt(SAVED_POSITION, savedPosition)
         super.onSaveInstanceState(outState)
     }
@@ -140,17 +142,28 @@ class WebtoonReader : BaseReader() {
                 }
                 return true
             }
+
+            override fun onLongPress(e: MotionEvent) {
+                if (isAdded) {
+                    val child = recycler.findChildViewUnder(e.rawX, e.rawY)
+                    val position = recycler.getChildAdapterPosition(child)
+                    val page = adapter.pages?.getOrNull(position)
+                    if (page != null)
+                        readerActivity.onLongPress(page)
+                    else
+                        context.toast(getString(R.string.unknown_error))
+                }
+            }
         })
     }
 
     /**
      * Called when a new chapter is set in [BaseReader].
-     *
      * @param chapter the chapter set.
      * @param currentPage the initial page to display.
      */
     override fun onChapterSet(chapter: ReaderChapter, currentPage: Page) {
-        this.currentPage = currentPage.pageNumber
+        this.currentPage = currentPage.index
 
         // Make sure the view is already initialized.
         if (view != null) {
@@ -160,7 +173,6 @@ class WebtoonReader : BaseReader() {
 
     /**
      * Called when a chapter is appended in [BaseReader].
-     *
      * @param chapter the chapter appended.
      */
     override fun onChapterAppended(chapter: ReaderChapter) {
@@ -184,7 +196,6 @@ class WebtoonReader : BaseReader() {
 
     /**
      * Sets the active page.
-     *
      * @param pageNumber the index of the page from [pages].
      */
     override fun setActivePage(pageNumber: Int) {

app/src/main/java/eu/kanade/tachiyomi/ui/recent_updates/RecentChaptersFragment.kt

@@ -3,6 +3,7 @@ package eu.kanade.tachiyomi.ui.recent_updates
 import android.os.Bundle
 import android.support.v4.app.DialogFragment
 import android.support.v7.view.ActionMode
+import android.support.v7.widget.DividerItemDecoration
 import android.support.v7.widget.LinearLayoutManager
 import android.view.*
 import com.afollestad.materialdialogs.MaterialDialog
@@ -13,9 +14,7 @@ import eu.kanade.tachiyomi.ui.base.adapter.FlexibleViewHolder
 import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
 import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
-import eu.kanade.tachiyomi.util.getResourceDrawable
 import eu.kanade.tachiyomi.widget.DeletingChaptersDialog
-import eu.kanade.tachiyomi.widget.DividerItemDecoration
 import kotlinx.android.synthetic.main.fragment_recent_chapters.*
 import nucleus.factory.RequiresPresenter
 import timber.log.Timber
@@ -69,7 +68,7 @@ class RecentChaptersFragment
     override fun onViewCreated(view: View, savedState: Bundle?) {
         // Init RecyclerView and adapter
         recycler.layoutManager = LinearLayoutManager(activity)
-        recycler.addItemDecoration(DividerItemDecoration(context.theme.getResourceDrawable(R.attr.divider_drawable)))
+        recycler.addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
         recycler.setHasFixedSize(true)
         adapter = RecentChaptersAdapter(this)
         recycler.adapter = adapter

app/src/main/java/eu/kanade/tachiyomi/ui/recent_updates/RecentChaptersPresenter.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.ui.recent_updates
 
 import android.os.Bundle
+import com.hippo.unifile.UniFile
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.database.models.MangaChapter
 import eu.kanade.tachiyomi.data.download.DownloadManager
@@ -97,7 +98,10 @@ class RecentChaptersPresenter : BasePresenter<RecentChaptersFragment>() {
                 .map { mangaChapters ->
                     mangaChapters.map { it.toModel() }
                 }
-                .doOnNext { chapters = it }
+                .doOnNext {
+                    setDownloadedChapters(it)
+                    chapters = it
+                }
                 // Group chapters by the date they were fetched on a ordered map.
                 .flatMap { recentItems ->
                     Observable.from(recentItems)
@@ -142,18 +146,29 @@ class RecentChaptersPresenter : BasePresenter<RecentChaptersFragment>() {
         // downloaded and assign it to the status.
         if (download != null) {
             model.download = download
-        } else {
-            // Get source of chapter.
-            val source = sourceManager.get(manga.source)!!
-
-            model.status = if (downloadManager.isChapterDownloaded(source, manga, chapter))
-                Download.DOWNLOADED
-            else
-                Download.NOT_DOWNLOADED
         }
         return model
     }
 
+    /**
+     * Finds and assigns the list of downloaded chapters.
+     *
+     * @param chapters the list of chapter from the database.
+     */
+    private fun setDownloadedChapters(chapters: List<RecentChapter>) {
+        val cachedDirs = mutableMapOf<Long, UniFile?>()
+
+        chapters.forEach { chapter ->
+            val manga = chapter.manga
+            val mangaDir = cachedDirs.getOrPut(manga.id!!)
+                    { downloadManager.findMangaDir(sourceManager.get(manga.source)!!, manga) }
+
+            if (mangaDir?.findFile(downloadManager.getChapterDirName(chapter)) != null) {
+                chapter.status = Download.DOWNLOADED
+            }
+        }
+    }
+
     /**
      * Update status of chapters.
      * @param download download object containing progress.
@@ -207,10 +222,6 @@ class RecentChaptersPresenter : BasePresenter<RecentChaptersFragment>() {
      * @param chapters list of chapters
      */
     fun deleteChapters(chapters: List<RecentChapter>) {
-        val wasRunning = downloadManager.isRunning
-        if (wasRunning) {
-            DownloadService.stop(context)
-        }
         Observable.from(chapters)
                 .doOnNext { deleteChapter(it) }
                 .toList()
@@ -218,9 +229,6 @@ class RecentChaptersPresenter : BasePresenter<RecentChaptersFragment>() {
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribeFirst({ view, result ->
                     view.onChaptersDeleted()
-                    if (wasRunning) {
-                        DownloadService.start(context)
-                    }
                 }, { view, error ->
                     view.onChaptersDeletedError(error)
                 })
@@ -253,7 +261,7 @@ class RecentChaptersPresenter : BasePresenter<RecentChaptersFragment>() {
      */
     private fun deleteChapter(chapter: RecentChapter) {
         val source = sourceManager.get(chapter.manga.source) ?: return
-        downloadManager.queue.del(chapter)
+        downloadManager.queue.remove(chapter)
         downloadManager.deleteChapter(source, chapter.manga, chapter)
         chapter.status = Download.NOT_DOWNLOADED
         chapter.download = null

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAboutFragment.kt

@@ -8,7 +8,7 @@ import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.updater.GithubUpdateChecker
 import eu.kanade.tachiyomi.data.updater.GithubUpdateResult
-import eu.kanade.tachiyomi.data.updater.UpdateCheckerService
+import eu.kanade.tachiyomi.data.updater.UpdateCheckerJob
 import eu.kanade.tachiyomi.data.updater.UpdateDownloaderService
 import eu.kanade.tachiyomi.util.toast
 import net.xpece.android.support.preference.SwitchPreference
@@ -64,9 +64,9 @@ class SettingsAboutFragment : SettingsFragment() {
             automaticUpdates.setOnPreferenceChangeListener { preference, any ->
                 val checked = any as Boolean
                 if (checked) {
-                    UpdateCheckerService.setupTask(context)
+                    UpdateCheckerJob.setupTask()
                 } else {
-                    UpdateCheckerService.cancelTask(context)
+                    UpdateCheckerJob.cancelTask()
                 }
                 true
             }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedFragment.kt

@@ -71,7 +71,7 @@ class SettingsAdvancedFragment : SettingsFragment() {
     private fun clearChapterCache() {
         val deletedFiles = AtomicInteger()
 
-        val files = chapterCache.cacheDir.listFiles()
+        val files = chapterCache.cacheDir.listFiles() ?: return
 
         val dialog = MaterialDialog.Builder(activity)
                 .title(R.string.deleting)

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsDownloadsFragment.kt

@@ -2,6 +2,8 @@ package eu.kanade.tachiyomi.ui.setting
 
 import android.app.Activity
 import android.content.Intent
+import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.os.Environment
 import android.support.v4.content.ContextCompat
@@ -11,6 +13,7 @@ import android.support.v7.widget.RecyclerView
 import android.view.View
 import android.view.ViewGroup
 import com.afollestad.materialdialogs.MaterialDialog
+import com.hippo.unifile.UniFile
 import com.nononsenseapps.filepicker.AbstractFilePickerFragment
 import com.nononsenseapps.filepicker.FilePickerActivity
 import com.nononsenseapps.filepicker.FilePickerFragment
@@ -26,7 +29,8 @@ import java.io.File
 class SettingsDownloadsFragment : SettingsFragment() {
 
     companion object {
-        val DOWNLOAD_DIR_CODE = 103
+        const val DOWNLOAD_DIR_PRE_L = 103
+        const val DOWNLOAD_DIR_L = 104
 
         fun newInstance(rootKey: String): SettingsDownloadsFragment {
             val args = Bundle()
@@ -45,24 +49,30 @@ class SettingsDownloadsFragment : SettingsFragment() {
         downloadDirPref.setOnPreferenceClickListener {
 
             val currentDir = preferences.downloadsDirectory().getOrDefault()
-            val externalDirs = getExternalFilesDirs() + getString(R.string.custom_dir)
-            val selectedIndex = externalDirs.indexOf(File(currentDir))
+            val externalDirs = getExternalFilesDirs() + File(getString(R.string.custom_dir))
+            val selectedIndex = externalDirs.map(File::toString).indexOfFirst { it in currentDir }
 
             MaterialDialog.Builder(activity)
                     .items(externalDirs)
                     .itemsCallbackSingleChoice(selectedIndex, { dialog, view, which, text ->
                         if (which == externalDirs.lastIndex) {
-                            // Custom dir selected, open directory selector
-                            val i = Intent(activity, CustomLayoutPickerActivity::class.java)
-                            i.putExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false)
-                            i.putExtra(FilePickerActivity.EXTRA_ALLOW_CREATE_DIR, true)
-                            i.putExtra(FilePickerActivity.EXTRA_MODE, FilePickerActivity.MODE_DIR)
-                            i.putExtra(FilePickerActivity.EXTRA_START_PATH, currentDir)
+                            if (Build.VERSION.SDK_INT < 21) {
+                                // Custom dir selected, open directory selector
+                                val i = Intent(activity, CustomLayoutPickerActivity::class.java)
+                                i.putExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false)
+                                i.putExtra(FilePickerActivity.EXTRA_ALLOW_CREATE_DIR, true)
+                                i.putExtra(FilePickerActivity.EXTRA_MODE, FilePickerActivity.MODE_DIR)
+                                i.putExtra(FilePickerActivity.EXTRA_START_PATH, currentDir)
 
-                            startActivityForResult(i, DOWNLOAD_DIR_CODE)
+                                startActivityForResult(i, DOWNLOAD_DIR_PRE_L)
+                            } else {
+                                val i = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+                                startActivityForResult(i, DOWNLOAD_DIR_L)
+                            }
                         } else {
                             // One of the predefined folders was selected
-                            preferences.downloadsDirectory().set(text.toString())
+                            val path = Uri.fromFile(File(text.toString()))
+                            preferences.downloadsDirectory().set(path.toString())
                         }
                         true
                     })
@@ -72,7 +82,16 @@ class SettingsDownloadsFragment : SettingsFragment() {
         }
 
         subscriptions += preferences.downloadsDirectory().asObservable()
-                .subscribe { downloadDirPref.summary = it }
+                .subscribe { path ->
+                    val dir = UniFile.fromUri(context, Uri.parse(path))
+
+                    downloadDirPref.summary = dir.filePath ?: path
+
+                    // Don't display downloaded chapters in gallery apps creating a ".nomedia" file.
+                    if (dir != null && dir.exists()) {
+                        dir.createFile(".nomedia")
+                    }
+                }
     }
 
     fun getExternalFilesDirs(): List<File> {
@@ -85,8 +104,22 @@ class SettingsDownloadsFragment : SettingsFragment() {
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        if (data != null && requestCode == DOWNLOAD_DIR_CODE && resultCode == Activity.RESULT_OK) {
-            preferences.downloadsDirectory().set(data.data.path)
+        when (requestCode) {
+            DOWNLOAD_DIR_PRE_L -> if (data != null && resultCode == Activity.RESULT_OK) {
+                val uri = Uri.fromFile(File(data.data.path))
+                preferences.downloadsDirectory().set(uri.toString())
+            }
+            DOWNLOAD_DIR_L -> if (data != null && resultCode == Activity.RESULT_OK) {
+                val uri = data.data
+                val flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or
+                        Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+
+                @Suppress("NewApi")
+                context.contentResolver.takePersistableUriPermission(uri, flags)
+
+                val file = UniFile.fromUri(context, uri)
+                preferences.downloadsDirectory().set(file.uri.toString())
+            }
         }
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsFragment.kt

@@ -2,14 +2,10 @@ package eu.kanade.tachiyomi.ui.setting
 
 import android.os.Bundle
 import android.support.annotation.CallSuper
-import android.support.graphics.drawable.VectorDrawableCompat
-import android.support.v4.content.ContextCompat
 import android.support.v7.preference.Preference
 import android.support.v7.preference.XpPreferenceFragment
 import android.view.View
 import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.util.getResourceId
-import net.xpece.android.support.preference.PreferenceIconHelper
 import net.xpece.android.support.preference.PreferenceScreenNavigationStrategy
 import rx.subscriptions.CompositeSubscription
 
@@ -25,10 +21,6 @@ open class SettingsFragment : XpPreferenceFragment() {
 
     lateinit var subscriptions: CompositeSubscription
 
-    private val iconTint by lazy { ContextCompat.getColorStateList(context,
-            context.theme.getResourceId(R.attr.colorAccent, 0))
-    }
-
     override final fun onCreatePreferences2(savedState: Bundle?, rootKey: String?) {
         subscriptions = CompositeSubscription()
 
@@ -40,18 +32,6 @@ open class SettingsFragment : XpPreferenceFragment() {
         addPreferencesFromResource(R.xml.pref_advanced)
         addPreferencesFromResource(R.xml.pref_about)
 
-        // Add an icon to each subscreen
-        for ((screen, drawable) in getSubscreenIcons()) {
-            val icon = VectorDrawableCompat.create(resources, drawable, context.theme) ?: continue
-
-            PreferenceIconHelper(findPreference(screen)).apply {
-                isIconPaddingEnabled = true
-                setIcon(icon)
-                tintList = iconTint
-                isIconTintEnabled = true
-            }
-        }
-
         // Setup root preference title.
         preferenceScreen.title = activity.title
 
@@ -74,16 +54,6 @@ open class SettingsFragment : XpPreferenceFragment() {
         super.onDestroyView()
     }
 
-    private fun getSubscreenIcons() = listOf(
-            "general_screen" to R.drawable.ic_tune_black_24dp,
-            "reader_screen" to R.drawable.ic_chrome_reader_mode_black_24dp,
-            "downloads_screen" to R.drawable.ic_file_download_black_24dp,
-            "sources_screen" to R.drawable.ic_language_black_24dp,
-            "sync_screen" to R.drawable.ic_sync_black_24dp,
-            "advanced_screen" to R.drawable.ic_code_black_24dp,
-            "about_screen" to R.drawable.ic_help_black_24dp
-    )
-
     protected inline fun <reified T : Preference> bindPref(resId: Int): Lazy<T> {
         return lazy { findPreference(getString(resId)) as T }
     }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsGeneralFragment.kt

@@ -7,7 +7,7 @@ import android.support.v7.preference.XpPreferenceFragment
 import android.view.View
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
-import eu.kanade.tachiyomi.data.library.LibraryUpdateTrigger
+import eu.kanade.tachiyomi.data.library.LibraryUpdateJob
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.util.plusAssign
 import eu.kanade.tachiyomi.widget.preference.IntListPreference
@@ -57,19 +57,20 @@ class SettingsGeneralFragment : SettingsFragment(),
                 .subscribe { updateColumnsSummary(it.first, it.second) }
 
         updateInterval.setOnPreferenceChangeListener { preference, newValue ->
-            val interval = (newValue as String).toInt()
-            if (interval > 0)
-                LibraryUpdateTrigger.setupTask(context, interval)
-            else
-                LibraryUpdateTrigger.cancelTask(context)
+            // Always cancel the previous task, it seems that sometimes they are not updated.
+            LibraryUpdateJob.cancelTask()
 
+            val interval = (newValue as String).toInt()
+            if (interval > 0) {
+                LibraryUpdateJob.setupTask(interval)
+            }
             true
         }
 
         updateRestriction.setOnPreferenceChangeListener { preference, newValue ->
             // Post to event looper to allow the preference to be updated.
             subscriptions += Observable.fromCallable {
-                LibraryUpdateTrigger.setupTask(context)
+                LibraryUpdateJob.setupTask()
             }.subscribeOn(AndroidSchedulers.mainThread()).subscribe()
 
             true

app/src/main/java/eu/kanade/tachiyomi/util/ChapterRecognition.kt

@@ -29,7 +29,7 @@ object ChapterRecognition {
      * Regex used to remove unwanted tags
      * Example Prison School 12 v.1 vol004 version1243 volume64 -R> Prison School 12
      */
-    private val unwanted = Regex("""(?:(v|ver|vol|version|volume|season).?[0-9]+)""")
+    private val unwanted = Regex("""(?:(v|ver|vol|version|volume|season|s).?[0-9]+)""")
 
     /**
      * Regex used to remove unwanted whitespace

app/src/main/java/eu/kanade/tachiyomi/util/ChapterSourceSync.kt

@@ -36,7 +36,7 @@ fun syncChaptersWithSource(db: DatabaseHelper,
     // Recognize number for new chapters.
     toAdd.forEach {
         if (source is OnlineSource) {
-            source.parseChapterNumber(it)
+            source.prepareNewChapter(it, manga)
         }
         ChapterRecognition.parseChapterNumber(it, manga)
     }

app/src/main/java/eu/kanade/tachiyomi/util/ContextExtensions.kt

@@ -1,10 +1,11 @@
 package eu.kanade.tachiyomi.util
 
-import android.app.AlarmManager
 import android.app.Notification
 import android.app.NotificationManager
 import android.content.Context
 import android.content.pm.PackageManager
+import android.net.ConnectivityManager
+import android.os.PowerManager
 import android.support.annotation.StringRes
 import android.support.v4.app.NotificationCompat
 import android.support.v4.content.ContextCompat
@@ -54,8 +55,13 @@ val Context.notificationManager: NotificationManager
     get() = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
 
 /**
- * Property to get the alarm manager from the context.
- * @return the alarm manager.
+ * Property to get the connectivity manager from the context.
  */
-val Context.alarmManager: AlarmManager
-    get() = getSystemService(Context.ALARM_SERVICE) as AlarmManager
+val Context.connectivityManager: ConnectivityManager
+    get() = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+
+/**
+ * Property to get the power manager from the context.
+ */
+val Context.powerManager: PowerManager
+    get() = getSystemService(Context.POWER_SERVICE) as PowerManager

app/src/main/java/eu/kanade/tachiyomi/util/DiskUtil.kt

@@ -0,0 +1,70 @@
+package eu.kanade.tachiyomi.util
+
+import java.io.File
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+
+object DiskUtil {
+
+    fun hashKeyForDisk(key: String): String {
+        return try {
+            val bytes = MessageDigest.getInstance("MD5").digest(key.toByteArray())
+            val sb = StringBuilder()
+            bytes.forEach { byte ->
+                sb.append(Integer.toHexString(byte.toInt() and 0xFF or 0x100).substring(1, 3))
+            }
+            sb.toString()
+        } catch (e: NoSuchAlgorithmException) {
+            key.hashCode().toString()
+        }
+    }
+
+    fun getDirectorySize(f: File): Long {
+        var size: Long = 0
+        if (f.isDirectory) {
+            for (file in f.listFiles()) {
+                size += getDirectorySize(file)
+            }
+        } else {
+            size = f.length()
+        }
+        return size
+    }
+
+    /**
+     * Mutate the given filename to make it valid for a FAT filesystem,
+     * replacing any invalid characters with "_". This method doesn't allow private files (starting
+     * with a dot), but you can manually add it later.
+     */
+    fun buildValidFilename(origName: String): String {
+        val name = origName.trim('.', ' ')
+        if (name.isNullOrEmpty()) {
+            return "(invalid)"
+        }
+        val sb = StringBuilder(name.length)
+        name.forEach { c ->
+            if (isValidFatFilenameChar(c)) {
+                sb.append(c)
+            } else {
+                sb.append('_')
+            }
+        }
+        // Even though vfat allows 255 UCS-2 chars, we might eventually write to
+        // ext4 through a FUSE layer, so use that limit minus 15 reserved characters.
+        return sb.toString().take(240)
+    }
+
+    /**
+     * Returns true if the given character is a valid filename character, false otherwise.
+     */
+    private fun isValidFatFilenameChar(c: Char): Boolean {
+        if (0x00.toChar() <= c && c <= 0x1f.toChar()) {
+            return false
+        }
+        return when (c) {
+            '"', '*', '/', ':', '<', '>', '?', '\\', '|', 0x7f.toChar() -> false
+            else -> true
+        }
+    }
+}
+

app/src/main/java/eu/kanade/tachiyomi/util/DiskUtils.java

@@ -1,69 +0,0 @@
-package eu.kanade.tachiyomi.util;
-
-import java.io.File;
-import java.io.IOException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-
-public final class DiskUtils {
-
-    private DiskUtils() {
-        throw new AssertionError();
-    }
-
-    public static String hashKeyForDisk(String key) {
-        String cacheKey;
-        try {
-            final MessageDigest mDigest = MessageDigest.getInstance("MD5");
-            mDigest.update(key.getBytes());
-            cacheKey = bytesToHexString(mDigest.digest());
-        } catch (NoSuchAlgorithmException e) {
-            cacheKey = String.valueOf(key.hashCode());
-        }
-        return cacheKey;
-    }
-
-    private static String bytesToHexString(byte[] bytes) {
-        StringBuilder sb = new StringBuilder();
-        for (int i = 0; i < bytes.length; i++) {
-            String hex = Integer.toHexString(0xFF & bytes[i]);
-            if (hex.length() == 1) {
-                sb.append('0');
-            }
-            sb.append(hex);
-        }
-        return sb.toString();
-    }
-    
-    public static void deleteFiles(File inputFile) {
-        if (inputFile.isDirectory()) {
-            for (File childFile : inputFile.listFiles()) {
-                deleteFiles(childFile);
-            }
-        }
-
-        //noinspection ResultOfMethodCallIgnored
-        inputFile.delete();
-    }
-
-    public static synchronized void createDirectory(File directory) throws IOException {
-        if (!directory.exists() && !directory.mkdirs()) {
-            throw new IOException("Failed creating directory");
-        }
-
-    }
-
-    public static long getDirectorySize(File f) {
-        long size = 0;
-        if (f.isDirectory()) {
-            for (File file : f.listFiles()) {
-                size += getDirectorySize(file);
-            }
-        } else {
-            size=f.length();
-        }
-        return size;
-    }
-
-}
-

app/src/main/java/eu/kanade/tachiyomi/util/OkioExtensions.kt

@@ -1,7 +1,5 @@
 package eu.kanade.tachiyomi.util
 
-import android.graphics.Bitmap
-import android.graphics.BitmapFactory
 import okio.BufferedSource
 import okio.Okio
 import java.io.File
@@ -39,24 +37,3 @@ fun BufferedSource.saveTo(stream: OutputStream) {
         }
     }
 }
-
-/**
- * Saves the given source to an output stream and closes both resources.
- * The source is expected to be an image, and it may reencode the image.
- *
- * @param stream the stream where the source is copied.
- * @param reencode whether to reencode the image or not.
- */
-fun BufferedSource.saveImageTo(stream: OutputStream, reencode: Boolean = false) {
-    if (reencode) {
-        use {
-            val bitmap = BitmapFactory.decodeStream(it.inputStream())
-            stream.use {
-                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, it)
-            }
-            bitmap.recycle()
-        }
-    } else {
-        saveTo(stream)
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/util/StringExtensions.kt

@@ -0,0 +1,13 @@
+package eu.kanade.tachiyomi.util
+
+/**
+ * Replaces the given string to have at most [count] characters using [replacement] at its end.
+ * If [replacement] is longer than [count] an exception will be thrown when `length > count`.
+ */
+fun String.chop(count: Int, replacement: String = "..."): String {
+    return if (length > count)
+        take(count - replacement.length) + replacement
+    else
+        this
+
+}

app/src/main/java/eu/kanade/tachiyomi/util/UrlUtil.java

@@ -5,10 +5,6 @@ import java.net.URISyntaxException;
 
 public final class UrlUtil {
 
-    private static final String JPG = ".jpg";
-    private static final String PNG = ".png";
-    private static final String GIF = ".gif";
-
     private UrlUtil() throws InstantiationException {
         throw new InstantiationException("This class is not for instantiation");
     }
@@ -27,36 +23,4 @@ public final class UrlUtil {
         }
     }
 
-    public static boolean isJpg(String url) {
-        return containsIgnoreCase(url, JPG);
-    }
-
-    public static boolean isPng(String url) {
-        return containsIgnoreCase(url, PNG);
-    }
-
-    public static boolean isGif(String url) {
-        return containsIgnoreCase(url, GIF);
-    }
-
-    public static boolean containsIgnoreCase(String src, String what) {
-        final int length = what.length();
-        if (length == 0)
-            return true; // Empty string is contained
-
-        final char firstLo = Character.toLowerCase(what.charAt(0));
-        final char firstUp = Character.toUpperCase(what.charAt(0));
-
-        for (int i = src.length() - length; i >= 0; i--) {
-            // Quick check before calling the more expensive regionMatches() method:
-            final char ch = src.charAt(i);
-            if (ch != firstLo && ch != firstUp)
-                continue;
-
-            if (src.regionMatches(true, i, what, 0, length))
-                return true;
-        }
-
-        return false;
-    }
 }

app/src/main/java/eu/kanade/tachiyomi/widget/DividerItemDecoration.kt

@@ -1,83 +0,0 @@
-package eu.kanade.tachiyomi.widget
-
-import android.content.Context
-import android.graphics.Canvas
-import android.graphics.Rect
-import android.graphics.drawable.Drawable
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.RecyclerView
-import android.util.AttributeSet
-import android.view.View
-
-class DividerItemDecoration : RecyclerView.ItemDecoration {
-
-    private val divider: Drawable?
-
-    constructor(context: Context, attrs: AttributeSet) {
-        val a = context.obtainStyledAttributes(attrs, intArrayOf(android.R.attr.listDivider))
-        divider = a.getDrawable(0)
-        a.recycle()
-    }
-
-    constructor(divider: Drawable) {
-        this.divider = divider
-    }
-
-    override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State?) {
-        super.getItemOffsets(outRect, view, parent, state)
-        if (divider == null) return
-        if (parent.getChildPosition(view) < 1) return
-
-        if (getOrientation(parent) == LinearLayoutManager.VERTICAL)
-            outRect.top = divider.intrinsicHeight
-        else
-            outRect.left = divider.intrinsicWidth
-    }
-
-    override fun onDrawOver(c: Canvas, parent: RecyclerView, state: RecyclerView.State?) {
-        if (divider == null) {
-            super.onDrawOver(c, parent, state)
-            return
-        }
-
-        if (getOrientation(parent) == LinearLayoutManager.VERTICAL) {
-            val left = parent.paddingLeft
-            val right = parent.width - parent.paddingRight
-            val childCount = parent.childCount
-            val dividerHeight = divider.intrinsicHeight
-
-            for (i in 1..childCount - 1) {
-                val child = parent.getChildAt(i)
-                val params = child.layoutParams as RecyclerView.LayoutParams
-                val ty = (child.translationY + 0.5f).toInt()
-                val top = child.top - params.topMargin + ty
-                val bottom = top + dividerHeight
-                divider.setBounds(left, top, right, bottom)
-                divider.draw(c)
-            }
-        } else { //horizontal
-            val top = parent.paddingTop
-            val bottom = parent.height - parent.paddingBottom
-            val childCount = parent.childCount
-
-            for (i in 1..childCount - 1) {
-                val child = parent.getChildAt(i)
-                val params = child.layoutParams as RecyclerView.LayoutParams
-                val size = divider.intrinsicWidth
-                val left = child.left - params.leftMargin
-                val right = left + size
-                divider.setBounds(left, top, right, bottom)
-                divider.draw(c)
-            }
-        }
-    }
-
-    private fun getOrientation(parent: RecyclerView): Int {
-        if (parent.layoutManager is LinearLayoutManager) {
-            val layoutManager = parent.layoutManager as LinearLayoutManager
-            return layoutManager.orientation
-        } else
-            throw IllegalStateException("DividerItemDecoration can only be used with a LinearLayoutManager.")
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/widget/PreCachingLayoutManager.kt

@@ -6,6 +6,10 @@ import android.support.v7.widget.RecyclerView
 
 class PreCachingLayoutManager(context: Context) : LinearLayoutManager(context) {
 
+    init {
+        isItemPrefetchEnabled = false
+    }
+
     companion object {
         const val DEFAULT_EXTRA_LAYOUT_SPACE = 600
     }

app/src/main/java/eu/kanade/tachiyomi/widget/preference/SwitchPreferenceCategory.kt

@@ -3,7 +3,6 @@ package eu.kanade.tachiyomi.widget.preference
 import android.annotation.TargetApi
 import android.content.Context
 import android.content.res.TypedArray
-import android.os.Build
 import android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH
 import android.support.v7.preference.PreferenceViewHolder
 import android.support.v7.widget.SwitchCompat
@@ -11,7 +10,6 @@ import android.util.AttributeSet
 import android.view.View
 import android.widget.Checkable
 import android.widget.CompoundButton
-import android.widget.Switch
 import eu.kanade.tachiyomi.util.getResourceColor
 import net.xpece.android.support.preference.PreferenceCategory
 import net.xpece.android.support.preference.R
@@ -52,16 +50,12 @@ CompoundButton.OnCheckedChangeListener {
 
             if (view is SwitchCompat) {
                 view.setOnCheckedChangeListener(null)
-            } else if (NATIVE_SWITCH_CAPABLE && view is Switch) {
-                view.setOnCheckedChangeListener(null)
             }
 
             view.toggle()
 
             if (view is SwitchCompat) {
                 view.setOnCheckedChangeListener(this)
-            } else if (NATIVE_SWITCH_CAPABLE && view is Switch) {
-                view.setOnCheckedChangeListener(this)
             }
         }
     }
@@ -130,8 +124,4 @@ CompoundButton.OnCheckedChangeListener {
             defaultValue as Boolean)
     }
 
-    companion object {
-        private val NATIVE_SWITCH_CAPABLE = Build.VERSION.SDK_INT >= ICE_CREAM_SANDWICH
-    }
-
 }