Added downloads fragment

1 files changed, 159 insertions, 0 deletions

diff --git a/src/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java b/src/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java
new file mode 100644
index 000000000..fe661a38a
--- /dev/null
+++ b/src/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java
@@ -0,0 +1,159 @@
+package de.danoeh.antennapod.fragment;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v4.app.ListFragment;
+import android.view.View;
+import de.danoeh.antennapod.adapter.DownloadedEpisodesListAdapter;
+import de.danoeh.antennapod.feed.EventDistributor;
+import de.danoeh.antennapod.feed.FeedItem;
+import de.danoeh.antennapod.storage.DBReader;
+import de.danoeh.antennapod.storage.DBWriter;
+
+import java.util.List;
+
+/**
+ * Displays all running downloads and provides a button to delete them
+ */
+public class CompletedDownloadsFragment extends ListFragment {
+    private static final int EVENTS = EventDistributor.DOWNLOAD_HANDLED |
+            EventDistributor.DOWNLOADLOG_UPDATE |
+            EventDistributor.QUEUE_UPDATE |
+            EventDistributor.UNREAD_ITEMS_UPDATE;
+
+    private List<FeedItem> items;
+    private DownloadedEpisodesListAdapter listAdapter;
+
+    private boolean viewCreated = false;
+    private boolean itemsLoaded = false;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        startItemLoader();
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        EventDistributor.getInstance().register(contentUpdate);
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        EventDistributor.getInstance().unregister(contentUpdate);
+        stopItemLoader();
+    }
+
+    @Override
+    public void onDetach() {
+        super.onDetach();
+        stopItemLoader();
+        listAdapter = null;
+        viewCreated = false;
+    }
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        if (viewCreated && itemsLoaded) {
+            onFragmentLoaded();
+        }
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        viewCreated = true;
+        if (itemsLoaded && getActivity() != null) {
+            onFragmentLoaded();
+        }
+    }
+
+    private void onFragmentLoaded() {
+        if (listAdapter == null) {
+            listAdapter = new DownloadedEpisodesListAdapter(getActivity(), itemAccess);
+            setListAdapter(listAdapter);
+        }
+        listAdapter.notifyDataSetChanged();
+    }
+
+    private DownloadedEpisodesListAdapter.ItemAccess itemAccess = new DownloadedEpisodesListAdapter.ItemAccess() {
+        @Override
+        public int getCount() {
+            return (items != null) ? items.size() : 0;
+        }
+
+        @Override
+        public FeedItem getItem(int position) {
+            return (items != null) ? items.get(position) : null;
+        }
+
+        @Override
+        public void onFeedItemSecondaryAction(FeedItem item) {
+            DBWriter.deleteFeedMediaOfItem(getActivity(), item.getMedia().getId());
+        }
+    };
+
+    private EventDistributor.EventListener contentUpdate = new EventDistributor.EventListener() {
+        @Override
+        public void update(EventDistributor eventDistributor, Integer arg) {
+            if ((arg & EVENTS) != 0) {
+                startItemLoader();
+            }
+        }
+    };
+
+    private ItemLoader itemLoader;
+
+    private void startItemLoader() {
+        if (itemLoader != null) {
+            itemLoader.cancel(true);
+        }
+        itemLoader = new ItemLoader();
+        itemLoader.execute();
+    }
+
+    private void stopItemLoader() {
+        if (itemLoader != null) {
+            itemLoader.cancel(true);
+        }
+    }
+
+    private class ItemLoader extends AsyncTask<Void, Void, List<FeedItem>> {
+
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+            if (!itemsLoaded && viewCreated) {
+                setListShown(false);
+            }
+        }
+
+        @Override
+        protected void onPostExecute(List<FeedItem> feedItems) {
+            super.onPostExecute(feedItems);
+            setListShown(true);
+            if (feedItems != null) {
+                items = feedItems;
+                itemsLoaded = true;
+                if (viewCreated && getActivity() != null) {
+                    onFragmentLoaded();
+                }
+            }
+        }
+
+        @Override
+        protected List<FeedItem> doInBackground(Void... params) {
+            Context context = getActivity();
+            if (context != null) {
+                return DBReader.getDownloadedItems(context);
+            }
+            return null;
+        }
+    }
+}