CastControllerImpl.java revision af8d6c44f06d2f8baac2c5774a9efdae3fc36797 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.systemui.statusbar.policy;
18
19import android.content.Context;
20import android.media.MediaRouter;
21import android.media.MediaRouter.RouteInfo;
22
23import java.util.ArrayList;
24
25/** Platform implementation of the cast controller. **/
26public class CastControllerImpl implements CastController {
27
28    private final ArrayList<Callback> mCallbacks = new ArrayList<Callback>();
29    private final MediaRouter mMediaRouter;
30
31    public CastControllerImpl(Context context) {
32        mMediaRouter = (MediaRouter) context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
33    }
34
35    @Override
36    public void addCallback(Callback callback) {
37        mCallbacks.add(callback);
38    }
39
40    @Override
41    public void removeCallback(Callback callback) {
42        mCallbacks.remove(callback);
43    }
44
45    @Override
46    public void setDiscovering(boolean request) {
47        if (request) {
48            mMediaRouter.addCallback(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY,
49                    mMediaCallback,
50                    MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
51        } else {
52            mMediaRouter.removeCallback(mMediaCallback);
53        }
54    }
55
56    @Override
57    public void setCurrentUserId(int currentUserId) {
58        mMediaRouter.rebindAsUser(currentUserId);
59    }
60
61    private void updateRemoteDisplays() {
62        final MediaRouter.RouteInfo connectedRoute = mMediaRouter.getSelectedRoute(
63                MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY);
64        boolean enabled = connectedRoute != null
65                && connectedRoute.matchesTypes(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY);
66        boolean connecting;
67        if (enabled) {
68            connecting = connectedRoute.isConnecting();
69        } else {
70            connecting = false;
71            enabled = mMediaRouter.isRouteAvailable(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY,
72                    MediaRouter.AVAILABILITY_FLAG_IGNORE_DEFAULT_ROUTE);
73        }
74
75        String connectedRouteName = null;
76        if (connectedRoute != null) {
77            connectedRouteName = connectedRoute.getName().toString();
78        }
79        fireStateChanged(enabled, connecting, connectedRouteName);
80    }
81
82    private void fireStateChanged(boolean enabled, boolean connecting, String connectedRouteName) {
83        for (Callback callback : mCallbacks) {
84            callback.onStateChanged(enabled, connecting, connectedRouteName);
85        }
86    }
87
88    private final MediaRouter.SimpleCallback mMediaCallback = new MediaRouter.SimpleCallback() {
89        @Override
90        public void onRouteAdded(MediaRouter router, RouteInfo route) {
91            updateRemoteDisplays();
92        }
93        @Override
94        public void onRouteChanged(MediaRouter router, RouteInfo route) {
95            updateRemoteDisplays();
96        }
97        @Override
98        public void onRouteRemoved(MediaRouter router, RouteInfo route) {
99            updateRemoteDisplays();
100        }
101        @Override
102        public void onRouteSelected(MediaRouter router, int type, RouteInfo route) {
103            updateRemoteDisplays();
104        }
105        @Override
106        public void onRouteUnselected(MediaRouter router, int type, RouteInfo route) {
107            updateRemoteDisplays();
108        }
109    };
110}
111