Bug 1148149 - Support Android Presentation API. r=snorp, r=jgilbert

mobile/android/base/MediaPlayerManager.java

@@ -5,6 +5,9 @@
 
 package org.mozilla.gecko;
 
+import android.app.Presentation;
+import android.content.Context;
+import android.os.Build;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v7.media.MediaControlIntent;
@@ -12,6 +15,13 @@ import android.support.v7.media.MediaRouteSelector;
 import android.support.v7.media.MediaRouter;
 import android.support.v7.media.MediaRouter.RouteInfo;
 import android.util.Log;
+import android.view.Display;
+import android.view.Surface;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.ViewGroup;
+import android.view.ViewGroup.LayoutParams;
+import android.view.WindowManager;
 
 import com.google.android.gms.cast.CastMediaControlIntent;
 
@@ -61,6 +71,7 @@ public class MediaPlayerManager extends Fragment implements NativeEventListener
 
     private MediaRouter mediaRouter = null;
     private final Map<String, GeckoMediaPlayer> displays = new HashMap<String, GeckoMediaPlayer>();
+    private GeckoPresentation presentation = null;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -135,19 +146,23 @@ public class MediaPlayerManager extends Fragment implements NativeEventListener
                 displays.remove(route.getId());
                 GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent(
                         "MediaPlayer:Removed", route.getId()));
+                updatePresentation();
             }
 
             @SuppressWarnings("unused")
             public void onRouteSelected(MediaRouter router, int type, MediaRouter.RouteInfo route) {
+                updatePresentation();
             }
 
             // These methods aren't used by the support version Media Router
             @SuppressWarnings("unused")
             public void onRouteUnselected(MediaRouter router, int type, RouteInfo route) {
+                updatePresentation();
             }
 
             @Override
             public void onRoutePresentationDisplayChanged(MediaRouter router, RouteInfo route) {
+                updatePresentation();
             }
 
             @Override
@@ -159,6 +174,7 @@ public class MediaPlayerManager extends Fragment implements NativeEventListener
                 debug("onRouteAdded: route=" + route);
                 final GeckoMediaPlayer display = getMediaPlayerForRoute(route);
                 saveAndNotifyOfDisplay("MediaPlayer:Added", route, display);
+                updatePresentation();
             }
 
             @Override
@@ -166,6 +182,7 @@ public class MediaPlayerManager extends Fragment implements NativeEventListener
                 debug("onRouteChanged: route=" + route);
                 final GeckoMediaPlayer display = displays.get(route.getId());
                 saveAndNotifyOfDisplay("MediaPlayer:Changed", route, display);
+                updatePresentation();
             }
 
             private void saveAndNotifyOfDisplay(final String eventName,
@@ -221,4 +238,86 @@ public class MediaPlayerManager extends Fragment implements NativeEventListener
             .build();
         mediaRouter.addCallback(selectorBuilder, callback, MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
     }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        if (presentation != null) {
+            presentation.dismiss();
+            presentation = null;
+        }
+    }
+
+    private void updatePresentation() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return;
+        }
+
+        if (mediaRouter == null) {
+            return;
+        }
+
+        MediaRouter.RouteInfo route = mediaRouter.getSelectedRoute();
+        Display display = route != null ? route.getPresentationDisplay() : null;
+
+        if (display != null) {
+            if ((presentation != null) && (presentation.getDisplay() != display)) {
+                presentation.dismiss();
+                presentation = null;
+            }
+
+            if (presentation == null) {
+                presentation = new GeckoPresentation(getActivity(), display);
+
+                try {
+                    presentation.show();
+                } catch (WindowManager.InvalidDisplayException ex) {
+                    Log.w(LOGTAG, "Couldn't show presentation!  Display was removed in "
+                            + "the meantime.", ex);
+                    presentation = null;
+                }
+            }
+        } else if (presentation != null) {
+            presentation.dismiss();
+            presentation = null;
+        }
+    }
+
+    private static class SurfaceListener implements SurfaceHolder.Callback {
+        @Override
+        public void surfaceChanged(SurfaceHolder holder, int format, int width,
+                                                int height) {
+            // Surface changed so force a composite
+            GeckoAppShell.scheduleComposite();
+        }
+
+        @Override
+        public void surfaceCreated(SurfaceHolder holder) {
+            GeckoAppShell.addPresentationSurface(holder.getSurface());
+            GeckoAppShell.scheduleComposite();
+        }
+
+        @Override
+        public void surfaceDestroyed(SurfaceHolder holder) {
+            GeckoAppShell.removePresentationSurface(holder.getSurface());
+        }
+    }
+
+    private final static class GeckoPresentation extends Presentation {
+        private SurfaceView mView;
+        public GeckoPresentation(Context context, Display display) {
+            super(context, display);
+        }
+
+        @Override
+        protected void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            mView = new SurfaceView(getContext());
+            setContentView(mView, new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT));
+            mView.getHolder().addCallback(new SurfaceListener());
+        }
+    }
 }