Check for duplicate when saving a post filter. Fix an issue in PostFilter Parcelable implementation.

app/src/main/java/ml/docilealligator/infinityforreddit/activities/CustomizePostFilterActivity.java

@@ -22,6 +22,7 @@ import androidx.coordinatorlayout.widget.CoordinatorLayout;
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.appbar.CollapsingToolbarLayout;
 import com.google.android.material.checkbox.MaterialCheckBox;
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.switchmaterial.SwitchMaterial;
 import com.google.android.material.textfield.TextInputEditText;
 import com.google.android.material.textfield.TextInputLayout;
@@ -50,6 +51,7 @@ public class CustomizePostFilterActivity extends BaseActivity {
     public static final String EXTRA_FROM_SETTINGS = "EFS";
     public static final String RETURN_EXTRA_POST_FILTER = "REPF";
     private static final String POST_FILTER_STATE = "PFS";
+    private static final String ORIGINAL_NAME_STATE = "ONS";
     private static final int ADD_SUBREDDITS_REQUEST_CODE = 1;
     private static final int ADD_USERS_REQUEST_CODE = 2;
 
@@ -176,6 +178,7 @@ public class CustomizePostFilterActivity extends BaseActivity {
     Executor mExecutor;
     private PostFilter postFilter;
     private boolean fromSettings;
+    private String originalName;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -249,10 +252,14 @@ public class CustomizePostFilterActivity extends BaseActivity {
 
         if (savedInstanceState != null) {
             postFilter = savedInstanceState.getParcelable(POST_FILTER_STATE);
+            originalName = savedInstanceState.getString(ORIGINAL_NAME_STATE);
         } else {
             postFilter = getIntent().getParcelableExtra(EXTRA_POST_FILTER);
             if (postFilter == null) {
                 postFilter = new PostFilter();
+                originalName = "";
+            } else {
+                originalName = postFilter.name;
             }
             bindView();
         }
@@ -376,13 +383,7 @@ public class CustomizePostFilterActivity extends BaseActivity {
             constructPostFilter();
 
             if (!postFilter.name.equals("")) {
-                Handler handler = new Handler();
+                savePostFilter(originalName);
-                SavePostFilter.savePostFilter(mRedditDataRoomDatabase, mExecutor, postFilter, () -> handler.post(() -> {
-                    Intent returnIntent = new Intent();
-                    returnIntent.putExtra(RETURN_EXTRA_POST_FILTER, postFilter);
-                    setResult(Activity.RESULT_OK, returnIntent);
-                    finish();
-                }));
             } else {
                 Toast.makeText(CustomizePostFilterActivity.this, R.string.post_filter_requires_a_name, Toast.LENGTH_LONG).show();
             }
@@ -390,6 +391,29 @@ public class CustomizePostFilterActivity extends BaseActivity {
         return false;
     }
 
+    private void savePostFilter(String originalName) {
+        SavePostFilter.savePostFilter(mExecutor, new Handler(), mRedditDataRoomDatabase, postFilter, originalName,
+                new SavePostFilter.SavePostFilterListener() {
+                    @Override
+                    public void success() {
+                        Intent returnIntent = new Intent();
+                        returnIntent.putExtra(RETURN_EXTRA_POST_FILTER, postFilter);
+                        setResult(Activity.RESULT_OK, returnIntent);
+                        finish();
+                    }
+
+                    @Override
+                    public void duplicate() {
+                        new MaterialAlertDialogBuilder(CustomizePostFilterActivity.this, R.style.MaterialAlertDialogTheme)
+                                .setTitle(getString(R.string.duplicate_post_filter_dialog_title, postFilter.name))
+                                .setMessage(R.string.duplicate_post_filter_dialog_message)
+                                .setPositiveButton(R.string.override, (dialogInterface, i) -> savePostFilter(postFilter.name))
+                                .setNegativeButton(R.string.cancel, null)
+                                .show();
+                    }
+                });
+    }
+
     @Override
     protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
@@ -449,5 +473,6 @@ public class CustomizePostFilterActivity extends BaseActivity {
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putParcelable(POST_FILTER_STATE, postFilter);
+        outState.putString(ORIGINAL_NAME_STATE, originalName);
     }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/activities/CustomizeThemeActivity.java

@@ -188,34 +188,34 @@ public class CustomizeThemeActivity extends BaseActivity {
 
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
-        switch (item.getItemId()) {
+        int itemId = item.getItemId();
-            case android.R.id.home:
+        if (itemId == android.R.id.home) {
-                finish();
+            finish();
-                return true;
+            return true;
-            case R.id.action_preview_customize_theme_activity:
+        } else if (itemId == R.id.action_preview_customize_theme_activity) {
-                Intent intent = new Intent(this, CustomThemePreviewActivity.class);
+            Intent intent = new Intent(this, CustomThemePreviewActivity.class);
-                intent.putParcelableArrayListExtra(CustomThemePreviewActivity.EXTRA_CUSTOM_THEME_SETTINGS_ITEMS, customThemeSettingsItems);
+            intent.putParcelableArrayListExtra(CustomThemePreviewActivity.EXTRA_CUSTOM_THEME_SETTINGS_ITEMS, customThemeSettingsItems);
-                startActivity(intent);
+            startActivity(intent);
 
-                return true;
+            return true;
-            case R.id.action_save_customize_theme_activity:
+        } else if (itemId == R.id.action_save_customize_theme_activity) {
-                if (adapter != null) {
+            if (adapter != null) {
-                    themeName = adapter.getThemeName();
+                themeName = adapter.getThemeName();
-                    if (themeName.equals("")) {
+                if (themeName.equals("")) {
-                        Snackbar.make(coordinatorLayout, R.string.no_theme_name, Snackbar.LENGTH_SHORT).show();
+                    Snackbar.make(coordinatorLayout, R.string.no_theme_name, Snackbar.LENGTH_SHORT).show();
-                        return true;
+                    return true;
-                    }
-                    CustomTheme customTheme = CustomTheme.convertSettingsItemsToCustomTheme(customThemeSettingsItems, themeName);
-                    new InsertCustomThemeAsyncTask(redditDataRoomDatabase, lightThemeSharedPreferences,
-                            darkThemeSharedPreferences, amoledThemeSharedPreferences, customTheme,
-                            false, () -> {
-                        Toast.makeText(CustomizeThemeActivity.this, R.string.saved, Toast.LENGTH_SHORT).show();
-                        EventBus.getDefault().post(new RecreateActivityEvent());
-                        finish();
-                    }).execute();
                 }
+                CustomTheme customTheme = CustomTheme.convertSettingsItemsToCustomTheme(customThemeSettingsItems, themeName);
+                new InsertCustomThemeAsyncTask(redditDataRoomDatabase, lightThemeSharedPreferences,
+                        darkThemeSharedPreferences, amoledThemeSharedPreferences, customTheme,
+                        false, () -> {
+                    Toast.makeText(CustomizeThemeActivity.this, R.string.saved, Toast.LENGTH_SHORT).show();
+                    EventBus.getDefault().post(new RecreateActivityEvent());
+                    finish();
+                }).execute();
+            }
 
-                return true;
+            return true;
         }
 
         return false;

app/src/main/java/ml/docilealligator/infinityforreddit/postfilter/PostFilter.java

@@ -68,6 +68,43 @@ public class PostFilter implements Parcelable {
 
     }
 
+    protected PostFilter(Parcel in) {
+        name = in.readString();
+        maxVote = in.readInt();
+        minVote = in.readInt();
+        maxComments = in.readInt();
+        minComments = in.readInt();
+        maxAwards = in.readInt();
+        minAwards = in.readInt();
+        allowNSFW = in.readByte() != 0;
+        onlyNSFW = in.readByte() != 0;
+        onlySpoiler = in.readByte() != 0;
+        postTitleExcludesRegex = in.readString();
+        postTitleExcludesStrings = in.readString();
+        excludeSubreddits = in.readString();
+        excludeUsers = in.readString();
+        containFlairs = in.readString();
+        excludeFlairs = in.readString();
+        containTextType = in.readByte() != 0;
+        containLinkType = in.readByte() != 0;
+        containImageType = in.readByte() != 0;
+        containGifType = in.readByte() != 0;
+        containVideoType = in.readByte() != 0;
+        containGalleryType = in.readByte() != 0;
+    }
+
+    public static final Creator<PostFilter> CREATOR = new Creator<PostFilter>() {
+        @Override
+        public PostFilter createFromParcel(Parcel in) {
+            return new PostFilter(in);
+        }
+
+        @Override
+        public PostFilter[] newArray(int size) {
+            return new PostFilter[size];
+        }
+    };
+
     public static boolean isPostAllowed(Post post, PostFilter postFilter) {
         if (postFilter == null || post == null) {
             return true;
@@ -222,42 +259,6 @@ public class PostFilter implements Parcelable {
         return postFilter;
     }
 
-    protected PostFilter(Parcel in) {
-        name = in.readString();
-        maxVote = in.readInt();
-        minVote = in.readInt();
-        maxComments = in.readInt();
-        minComments = in.readInt();
-        maxAwards = in.readInt();
-        minAwards = in.readInt();
-        allowNSFW = in.readByte() != 0;
-        onlyNSFW = in.readByte() != 0;
-        onlySpoiler = in.readByte() != 0;
-        postTitleExcludesRegex = in.readString();
-        postTitleExcludesStrings = in.readString();
-        excludeSubreddits = in.readString();
-        excludeUsers = in.readString();
-        containFlairs = in.readString();
-        excludeFlairs = in.readString();
-        containTextType = in.readByte() != 0;
-        containLinkType = in.readByte() != 0;
-        containImageType = in.readByte() != 0;
-        containVideoType = in.readByte() != 0;
-        containGalleryType = in.readByte() != 0;
-    }
-
-    public static final Creator<PostFilter> CREATOR = new Creator<PostFilter>() {
-        @Override
-        public PostFilter createFromParcel(Parcel in) {
-            return new PostFilter(in);
-        }
-
-        @Override
-        public PostFilter[] newArray(int size) {
-            return new PostFilter[size];
-        }
-    };
-
     @Override
     public int describeContents() {
         return 0;
@@ -284,6 +285,7 @@ public class PostFilter implements Parcelable {
         parcel.writeByte((byte) (containTextType ? 1 : 0));
         parcel.writeByte((byte) (containLinkType ? 1 : 0));
         parcel.writeByte((byte) (containImageType ? 1 : 0));
+        parcel.writeByte((byte) (containGifType ? 1 : 0));
         parcel.writeByte((byte) (containVideoType ? 1 : 0));
         parcel.writeByte((byte) (containGalleryType ? 1 : 0));
     }

app/src/main/java/ml/docilealligator/infinityforreddit/postfilter/PostFilterDao.java

@@ -20,10 +20,13 @@ public interface PostFilterDao {
     @Delete
     void deletePostFilter(PostFilter postFilter);
 
+    @Query("DELETE FROM post_filter WHERE name = :name")
+    void deletePostFilter(String name);
+
     @Query("SELECT * FROM post_filter WHERE name = :name LIMIT 1")
     PostFilter getPostFilter(String name);
 
-    @Query("SELECT * FROM post_filter")
+    @Query("SELECT * FROM post_filter ORDER BY name")
     LiveData<List<PostFilter>> getAllPostFiltersLiveData();
 
     @Query("SELECT * FROM post_filter WHERE post_filter.name IN " +

app/src/main/java/ml/docilealligator/infinityforreddit/postfilter/SavePostFilter.java

@@ -1,5 +1,7 @@
 package ml.docilealligator.infinityforreddit.postfilter;
 
+import android.os.Handler;
+
 import java.util.concurrent.Executor;
 
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
@@ -8,13 +10,22 @@ public class SavePostFilter {
     public interface SavePostFilterListener {
         //Need to make sure it is running in the UI thread.
         void success();
+        void duplicate();
     }
 
-    public static void savePostFilter(RedditDataRoomDatabase redditDataRoomDatabase, Executor executor,
+    public static void savePostFilter(Executor executor, Handler handler, RedditDataRoomDatabase redditDataRoomDatabase,
-                                      PostFilter postFilter, SavePostFilterListener savePostFilterListener) {
+                                      PostFilter postFilter, String originalName, SavePostFilterListener savePostFilterListener) {
         executor.execute(() -> {
-            redditDataRoomDatabase.postFilterDao().insert(postFilter);
+            if (!originalName.equals(postFilter.name) &&
-            savePostFilterListener.success();
+                    redditDataRoomDatabase.postFilterDao().getPostFilter(postFilter.name) != null) {
+                handler.post(savePostFilterListener::duplicate);
+            } else {
+                if (!originalName.equals(postFilter.name)) {
+                    redditDataRoomDatabase.postFilterDao().deletePostFilter(originalName);
+                }
+                redditDataRoomDatabase.postFilterDao().insert(postFilter);
+                handler.post(savePostFilterListener::success);
+            }
         });
     }
 }

app/src/main/res/values/strings.xml

@@ -986,6 +986,8 @@
     <string name="max_awards_hint">Max awards (-1: no restriction)</string>
     <string name="post_filter_name_hint">Post Filter Name</string>
     <string name="post_filter_requires_a_name">What is the name of this post filter?</string>
+    <string name="duplicate_post_filter_dialog_title">\'%1$s\' Already Exists</string>
+    <string name="duplicate_post_filter_dialog_message">Override it?</string>
     <string name="apply_post_filter_to">Apply to</string>
     <string name="post_filter_usage_home">Home</string>
     <string name="post_filter_usage_subreddit">Subreddit: %1$s</string>