Webview enhancements

- Pull to refresh
- Loading progress
- Share page

app/src/main/java/eu/kanade/tachiyomi/ui/webview/WebViewActivity.kt

@@ -7,19 +7,17 @@ import android.graphics.Color
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
+import android.webkit.WebChromeClient
 import android.webkit.WebView
 import androidx.core.graphics.ColorUtils
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.source.SourceManager
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.ui.base.activity.BaseActivity
-import eu.kanade.tachiyomi.util.WebViewClientCompat
-import eu.kanade.tachiyomi.util.getResourceColor
-import kotlinx.android.synthetic.main.webview_activity.toolbar
-import kotlinx.android.synthetic.main.webview_activity.webview
+import eu.kanade.tachiyomi.util.*
+import kotlinx.android.synthetic.main.webview_activity.*
 import uy.kohesive.injekt.injectLazy
 
-
 class WebViewActivity : BaseActivity() {
 
     private val sourceManager by injectLazy<SourceManager>()
@@ -41,11 +39,27 @@ class WebViewActivity : BaseActivity() {
             super.onBackPressed()
         }
 
+        swipe_refresh.isEnabled = false
+        swipe_refresh.setOnRefreshListener {
+            refreshPage()
+        }
+
         if (bundle == null) {
             val source = sourceManager.get(intent.extras!!.getLong(SOURCE_KEY)) as? HttpSource ?: return
             val url = intent.extras!!.getString(URL_KEY) ?: return
             val headers = source.headers.toMultimap().mapValues { it.value.getOrNull(0) ?: "" }
 
+            webview.webChromeClient = object : WebChromeClient() {
+                override fun onProgressChanged(view: WebView?, newProgress: Int) {
+                    progress_bar.visible()
+                    progress_bar.progress = newProgress
+                    if (newProgress == 100) {
+                        progress_bar.invisible()
+                    }
+                    super.onProgressChanged(view, newProgress)
+                }
+            }
+
             webview.webViewClient = object : WebViewClientCompat() {
                 override fun shouldOverrideUrlCompat(view: WebView, url: String): Boolean {
                     view.loadUrl(url)
@@ -56,12 +70,21 @@ class WebViewActivity : BaseActivity() {
                     super.onPageFinished(view, url)
                     invalidateOptionsMenu()
                     title = view?.title
+                    swipe_refresh.isEnabled = true
+                    swipe_refresh?.isRefreshing = false
                 }
 
                 override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
                     super.onPageStarted(view, url, favicon)
                     invalidateOptionsMenu()
                 }
+
+                override fun onPageCommitVisible(view: WebView?, url: String?) {
+                    super.onPageCommitVisible(view, url)
+
+                    // Reset to top when page refreshes
+                    nested_view.scrollTo(0, 0)
+                }
             }
             webview.settings.javaScriptEnabled = true
             webview.settings.userAgentString = source.headers["User-Agent"]
@@ -98,11 +121,29 @@ class WebViewActivity : BaseActivity() {
         when (item.itemId) {
             R.id.action_web_back -> webview.goBack()
             R.id.action_web_forward -> webview.goForward()
-            R.id.action_web_refresh -> webview.reload()
+            R.id.action_web_refresh -> refreshPage()
+            R.id.action_web_share -> shareWebpage()
         }
         return super.onOptionsItemSelected(item)
     }
 
+    private fun refreshPage() {
+        swipe_refresh.isRefreshing = true
+        webview.reload()
+    }
+
+    private fun shareWebpage() {
+        try {
+            val intent = Intent(Intent.ACTION_SEND).apply {
+                type = "text/plain"
+                putExtra(Intent.EXTRA_TEXT, webview.url)
+            }
+            startActivity(Intent.createChooser(intent, getString(R.string.action_share)))
+        } catch (e: Exception) {
+            toast(e.message)
+        }
+    }
+
     companion object {
         private const val SOURCE_KEY = "source_key"
         private const val URL_KEY = "url_key"

app/src/main/res/layout/webview_activity.xml

@@ -17,12 +17,19 @@
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
             android:theme="?attr/actionBarTheme"
-            app:navigationIcon="@drawable/ic_close_white_24dp"
-            app:layout_scrollFlags="scroll|enterAlways|snap" />
+            app:layout_scrollFlags="scroll|enterAlways|snap"
+            app:navigationIcon="@drawable/ic_close_white_24dp" />
 
     </com.google.android.material.appbar.AppBarLayout>
 
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@id/swipe_refresh"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
         <androidx.core.widget.NestedScrollView
+            android:id="@+id/nested_view"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             app:layout_behavior="@string/appbar_scrolling_view_behavior">
@@ -30,8 +37,20 @@
             <WebView
                 android:id="@+id/webview"
                 android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+                android:layout_height="match_parent">
+
+                <ProgressBar
+                    android:id="@+id/progress_bar"
+                    style="?android:attr/progressBarStyleHorizontal"
+                    android:layout_width="match_parent"
+                    android:layout_height="2dp"
+                    android:progressBackgroundTint="@color/colorPrimary"
+                    android:progressTint="@color/colorPrimary" />
+
+            </WebView>
 
         </androidx.core.widget.NestedScrollView>
 
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/menu/webview.xml

@@ -16,8 +16,12 @@
 
     <item
         android:id="@+id/action_web_refresh"
-        android:icon="@drawable/ic_refresh_white_24dp"
         android:title="@string/action_webview_refresh"
-        app:showAsAction="ifRoom" />
+        app:showAsAction="never" />
+
+    <item
+        android:id="@+id/action_web_share"
+        android:title="@string/action_share"
+        app:showAsAction="never" />
 
 </menu>