Delete mangas

app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
     <application
         android:name=".App"

app/src/main/java/eu/kanade/mangafeed/data/managers/MangaManager.java

@@ -1,6 +1,8 @@
 package eu.kanade.mangafeed.data.managers;
 
 import com.pushtorefresh.storio.sqlite.StorIOSQLite;
+import com.pushtorefresh.storio.sqlite.operations.delete.DeleteResult;
+import com.pushtorefresh.storio.sqlite.operations.delete.DeleteResults;
 import com.pushtorefresh.storio.sqlite.operations.put.PutResult;
 import com.pushtorefresh.storio.sqlite.queries.Query;
 import com.pushtorefresh.storio.sqlite.queries.RawQuery;
@@ -78,4 +80,18 @@ public class MangaManager extends BaseManager {
         return m;
     }
 
+    public Observable<DeleteResult> delete(Manga manga) {
+        return db.delete()
+                .object(manga)
+                .prepare()
+                .createObservable();
+    }
+
+    public Observable<DeleteResults<Manga>> delete(List<Manga> mangas) {
+        return db.delete()
+                .objects(mangas)
+                .prepare()
+                .createObservable();
+    }
+
 }

app/src/main/java/eu/kanade/mangafeed/presenter/LibraryPresenter.java

@@ -1,6 +1,7 @@
 package eu.kanade.mangafeed.presenter;
 
 import android.content.Intent;
+import android.util.SparseBooleanArray;
 
 import javax.inject.Inject;
 
@@ -11,6 +12,8 @@ import eu.kanade.mangafeed.data.models.Manga;
 import eu.kanade.mangafeed.ui.activity.MangaDetailActivity;
 import eu.kanade.mangafeed.ui.adapter.LibraryAdapter;
 import eu.kanade.mangafeed.view.LibraryView;
+import rx.Observable;
+import rx.schedulers.Schedulers;
 
 import static rx.android.schedulers.AndroidSchedulers.mainThread;
 
@@ -59,4 +62,14 @@ public class LibraryPresenter extends BasePresenter {
         adapter.getFilter().filter(query);
     }
 
+    public void onDelete(SparseBooleanArray checkedItems) {
+        Observable.range(0, checkedItems.size())
+                .observeOn(Schedulers.io())
+                .map(checkedItems::keyAt)
+                .map(adapter::getItem)
+                .toList()
+                .flatMap(db.manga::delete)
+                .subscribe();
+    }
+
 }

app/src/main/java/eu/kanade/mangafeed/ui/fragment/LibraryFragment.java

@@ -83,7 +83,6 @@ public class LibraryFragment extends BaseFragment implements LibraryView {
         });
     }
 
-
     // LibraryView
 
     public void setAdapter(EasyAdapter adapter) {
@@ -118,6 +117,12 @@ public class LibraryFragment extends BaseFragment implements LibraryView {
 
             @Override
             public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+                switch (item.getItemId()) {
+                    case R.id.action_delete:
+                        presenter.onDelete(grid.getCheckedItemPositions());
+                        mode.finish();
+                        return true;
+                }
                 return false;
             }