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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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 android.app;
import android.content.Context;
import android.media.MediaRouter;
import android.media.MediaRouter.RouteInfo;
import android.util.Log;
import android.view.ActionProvider;
import android.view.MenuItem;
import android.view.View;
public class MediaRouteActionProvider extends ActionProvider {
private static final String TAG = "MediaRouteActionProvider";
private Context mContext;
private MediaRouter mRouter;
private MenuItem mMenuItem;
private MediaRouteButton mView;
private int mRouteTypes;
private final RouterCallback mRouterCallback = new RouterCallback();
public MediaRouteActionProvider(Context context) {
super(context);
mContext = context;
mRouter = MediaRouter.forApplication(context);
// Start with live audio by default.
// TODO Update this when new route types are added; segment by API level
// when different route types were added.
setRouteTypes(MediaRouter.ROUTE_TYPE_LIVE_AUDIO);
}
public void setRouteTypes(int types) {
if (types == mRouteTypes) {
// Already registered; nothing to do.
return;
}
if (mRouteTypes != 0) {
mRouter.removeCallback(mRouterCallback);
}
mRouteTypes = types;
if (mView != null) {
mView.setRouteTypes(mRouteTypes);
}
mRouter.addCallback(types, mRouterCallback);
}
@Override
public View onCreateActionView() {
throw new UnsupportedOperationException("Use onCreateActionView(MenuItem) instead.");
}
@Override
public View onCreateActionView(MenuItem item) {
if (mMenuItem != null || mView != null) {
Log.e(TAG, "onCreateActionView: this ActionProvider is already associated " +
"with a menu item. Don't reuse MediaRouteActionProvider instances! " +
"Abandoning the old one...");
}
mMenuItem = item;
mView = new MediaRouteButton(mContext);
mMenuItem.setVisible(mRouter.getRouteCount() > 1);
mView.setRouteTypes(mRouteTypes);
return mView;
}
@Override
public boolean onPerformDefaultAction() {
// Show routing dialog
return true;
}
private class RouterCallback extends MediaRouter.SimpleCallback {
@Override
public void onRouteAdded(int type, RouteInfo info) {
mMenuItem.setVisible(mRouter.getRouteCount() > 1);
}
@Override
public void onRouteRemoved(int type, RouteInfo info) {
mMenuItem.setVisible(mRouter.getRouteCount() > 1);
}
}
}
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