/*
 * ServeStream: A HTTP stream browser/player for Android
 * Copyright 2010 William Seemann
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.sourceforge.servestream.widget;

import net.sourceforge.servestream.R;
import net.sourceforge.servestream.activity.MainActivity;
import net.sourceforge.servestream.activity.MediaPlayerActivity;
import net.sourceforge.servestream.provider.Media;
import net.sourceforge.servestream.service.MediaPlaybackService;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.view.View;
import android.widget.RemoteViews;

/**
 * Simple widget to show currently playing album art along
 * with play/pause and next track buttons.  
 */
public class ServeStreamAppWidgetOneProvider extends AppWidgetProvider {
    static final String TAG = ServeStreamAppWidgetOneProvider.class.getName();
    
    public static final String CMDAPPWIDGETUPDATE = "appwidgetupdate";

    private static ServeStreamAppWidgetOneProvider sInstance;
    
    public static synchronized ServeStreamAppWidgetOneProvider getInstance() {
        if (sInstance == null) {
            sInstance = new ServeStreamAppWidgetOneProvider();
        }
        return sInstance;
    }

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        defaultAppWidget(context, appWidgetIds);
        
        // Send broadcast intent to any running MediaPlaybackService so it can
        // wrap around with an immediate update.
        Intent updateIntent = new Intent(MediaPlaybackService.SERVICECMD);
        updateIntent.putExtra(MediaPlaybackService.CMDNAME,
                ServeStreamAppWidgetOneProvider.CMDAPPWIDGETUPDATE);
        updateIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
        updateIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
        context.sendBroadcast(updateIntent);
    }
    
    /**
     * Initialize given widgets to default state, where we launch ServeStream on default click
     * and hide actions if service not running.
     */
    private void defaultAppWidget(Context context, int[] appWidgetIds) {
        final Resources res = context.getResources();
        final RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.appwidget_one);
        
        views.setViewVisibility(R.id.title, View.GONE);
        views.setTextViewText(R.id.artist, res.getText(R.string.widget_one_initial_text));

        linkButtons(context, views, false /* not playing */);
        pushUpdate(context, appWidgetIds, views);
    }
    
    private void pushUpdate(Context context, int[] appWidgetIds, RemoteViews views) {
        // Update specific list of appWidgetIds if given, otherwise default to all
        final AppWidgetManager gm = AppWidgetManager.getInstance(context);
        if (appWidgetIds != null) {
            gm.updateAppWidget(appWidgetIds, views);
        } else {
            gm.updateAppWidget(new ComponentName(context, this.getClass()), views);
        }
    }
    
    /**
     * Check against {@link AppWidgetManager} if there are any instances of this widget.
     */
    private boolean hasInstances(Context context) {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
        int[] appWidgetIds = appWidgetManager.getAppWidgetIds(
                new ComponentName(context, this.getClass()));
        return (appWidgetIds.length > 0);
    }

    /**
     * Handle a change notification coming over from {@link MediaPlaybackService}
     */
    public void notifyChange(MediaPlaybackService service, String what) {
        if (hasInstances(service)) {
            if (MediaPlaybackService.META_CHANGED.equals(what) ||
            			MediaPlaybackService.PLAYSTATE_CHANGED.equals(what) ||
            				MediaPlaybackService.PLAYER_CLOSED.equals(what)) {
                performUpdate(service, null, what);
            }
        }
    }
    
    /**
     * Update all active widget instances by pushing changes 
     */
    public void performUpdate(MediaPlaybackService service, int[] appWidgetIds, String what) {
    	final Resources res = service.getResources();
        final RemoteViews views = new RemoteViews(service.getPackageName(), R.layout.appwidget_one);
        
        if (what.equals(MediaPlaybackService.PLAYER_CLOSED)) {
        	defaultAppWidget(service, appWidgetIds);
        } else {
        	CharSequence trackName = service.getTrackName();
        	CharSequence artistName = service.getArtistName();
        	//CharSequence errorState = null;
        
        	if (trackName == null || trackName.equals(Media.UNKNOWN_STRING)) {
        		trackName = res.getText(R.string.widget_one_track_info_unavailable);
        	}
        		
        	if (artistName == null || artistName.equals(Media.UNKNOWN_STRING)) {
        		artistName = service.getMediaUri();
        	}
        	
        	// Show media info
        	views.setViewVisibility(R.id.title, View.VISIBLE);
        	views.setTextViewText(R.id.title, trackName);
        	views.setTextViewText(R.id.artist, artistName);
        	
            // Set correct drawable for pause state
            final boolean playing = service.isPlaying();
            if (playing) {
                views.setImageViewResource(R.id.control_play, R.drawable.ic_appwidget_music_pause);
            } else {
                views.setImageViewResource(R.id.control_play, R.drawable.ic_appwidget_music_play);
            }
            
            // Link actions buttons to intents
            linkButtons(service, views, true);
        }
        
        pushUpdate(service, appWidgetIds, views);
    }
    
    /**
     * Link up various button actions using {@link PendingIntents}.
     * 
     * @param playerActive True if player is active in background, which means
     *            widget click will launch {@link MediaPlayerActivity},
     *            otherwise we launch {@link UriListActivity}.
     */
    private void linkButtons(Context context, RemoteViews views, boolean playerActive) {
        // Connect up various buttons and touch events
        Intent intent;
        PendingIntent pendingIntent;
        
        final ComponentName serviceName = new ComponentName(context, MediaPlaybackService.class);
        
        if (playerActive) {
            intent = new Intent(context, MediaPlayerActivity.class);
            pendingIntent = PendingIntent.getActivity(context,
                    0 /* no requestCode */, intent, 0 /* no flags */);
            views.setOnClickPendingIntent(R.id.appwidget_one, pendingIntent);
        } else {
            intent = new Intent(context, MainActivity.class);
            pendingIntent = PendingIntent.getActivity(context,
                    0 /* no requestCode */, intent, 0 /* no flags */);
            views.setOnClickPendingIntent(R.id.appwidget_one, pendingIntent);
        }
        
        intent = new Intent(MediaPlaybackService.TOGGLEPAUSE_ACTION);
        intent.setComponent(serviceName);
        pendingIntent = PendingIntent.getService(context,
                0 /* no requestCode */, intent, 0 /* no flags */);
        views.setOnClickPendingIntent(R.id.control_play, pendingIntent);
        
        intent = new Intent(MediaPlaybackService.NEXT_ACTION);
        intent.setComponent(serviceName);
        pendingIntent = PendingIntent.getService(context,
                0 /* no requestCode */, intent, 0 /* no flags */);
        views.setOnClickPendingIntent(R.id.control_next, pendingIntent);
    }
}

@@ -6310,39 +6310,24 @@
  true);%0A    
-    %7D%0A        %0A
         push
@@ -6356,32 +6356,42 @@
 getIds, views);%0A
+        %7D%0A
     %7D%0A    %0A    /

Fix widget issue