clear the download queue

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

@@ -4,15 +4,7 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
-import android.view.LayoutInflater;
-import android.view.Menu;
-import android.view.MenuInflater;
-import android.view.MenuItem;
-import android.view.View;
-import android.view.ViewGroup;
-
-import java.util.List;
-
+import android.view.*;
 import butterknife.Bind;
 import butterknife.ButterKnife;
 import eu.kanade.tachiyomi.R;
@@ -22,6 +14,9 @@ import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment;
 import nucleus.factory.RequiresPresenter;
 import rx.Subscription;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @RequiresPresenter(DownloadPresenter.class)
 public class DownloadFragment extends BaseRxFragment<DownloadPresenter> {
 
@@ -66,6 +61,10 @@ public class DownloadFragment extends BaseRxFragment<DownloadPresenter> {
         startButton = menu.findItem(R.id.start_queue);
         pauseButton = menu.findItem(R.id.pause_queue);
 
+        if(adapter.getItemCount() > 0) {
+            menu.findItem(R.id.clear_queue).setVisible(true);
+        }
+
         // Menu seems to be inflated after onResume in fragments, so we initialize them here
         startButton.setVisible(!isRunning && !getPresenter().downloadManager.getQueue().isEmpty());
         pauseButton.setVisible(isRunning);
@@ -80,6 +79,11 @@ public class DownloadFragment extends BaseRxFragment<DownloadPresenter> {
             case R.id.pause_queue:
                 DownloadService.stop(getActivity());
                 break;
+            case R.id.clear_queue: // Not sure if this is correct
+                DownloadService.stop(getActivity());
+                getPresenter().downloadManager.getQueue().clear();
+                onNextDownloads(new ArrayList<>());
+                break;
         }
         return super.onOptionsItemSelected(item);
     }

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

@@ -14,4 +14,9 @@
           android:visible="false"
           app:showAsAction="ifRoom"/>
 
+    <item android:title="@string/action_clear"
+          android:id="@+id/clear_queue"
+          android:visible="false"
+          app:showAsAction="never"/>
+
 </menu>

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

@@ -36,6 +36,7 @@
     <string name="action_start">Start</string>
     <string name="action_stop">Stop</string>
     <string name="action_pause">Pause</string>
+    <string name="action_clear">Clear</string>
     <string name="action_previous_chapter">Previous chapter</string>
     <string name="action_next_chapter">Next chapter</string>
     <string name="action_retry">Retry</string>