MediaRouteControllerDialog.java revision 3d4c9459ed77f732dd3ba602713af6ebf9280c8c 
1/*
2 * Copyright (C) 2013 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 android.support.v7.app;
18
19import android.app.Dialog;
20import android.content.Context;
21import android.graphics.drawable.Drawable;
22import android.os.Bundle;
23import android.support.v7.media.MediaRouteSelector;
24import android.support.v7.media.MediaRouter;
25import android.support.v7.mediarouter.R;
26import android.view.KeyEvent;
27import android.view.View;
28import android.view.Window;
29import android.widget.Button;
30import android.widget.FrameLayout;
31import android.widget.ImageView;
32import android.widget.LinearLayout;
33import android.widget.SeekBar;
34
35/**
36 * This class implements the route controller dialog for {@link MediaRouter}.
37 * <p>
38 * This dialog allows the user to control or disconnect from the currently selected route.
39 * </p>
40 *
41 * @see MediaRouteButton
42 * @see MediaRouteActionProvider
43 */
44public class MediaRouteControllerDialog extends Dialog {
45    private static final String TAG = "MediaRouteControllerDialog";
46
47    private final MediaRouter mRouter;
48    private final MediaRouterCallback mCallback;
49    private final MediaRouter.RouteInfo mRoute;
50
51    private Drawable mMediaRouteConnectingDrawable;
52    private Drawable mMediaRouteOnDrawable;
53    private Drawable mCurrentIconDrawable;
54
55    private LinearLayout mVolumeLayout;
56    private ImageView mVolumeDivider;
57    private SeekBar mVolumeSlider;
58    private boolean mVolumeSliderTouched;
59
60    private View mControlView;
61
62    private Button mDisconnectButton;
63
64    public MediaRouteControllerDialog(Context context) {
65        this(context, 0);
66    }
67
68    public MediaRouteControllerDialog(Context context, int theme) {
69        super(MediaRouterThemeHelper.createThemedContext(context), theme);
70        context = getContext();
71
72        mRouter = MediaRouter.getInstance(context);
73        mCallback = new MediaRouterCallback();
74        mRoute = mRouter.getSelectedRoute();
75    }
76
77    /**
78     * Gets the route that this dialog is controlling.
79     */
80    public MediaRouter.RouteInfo getRoute() {
81        return mRoute;
82    }
83
84    /**
85     * Provides the subclass an opportunity to create a view that will
86     * be included within the body of the dialog to offer additional media controls
87     * for the currently playing content.
88     *
89     * @param savedInstanceState The dialog's saved instance state.
90     * @return The media control view, or null if none.
91     */
92    public View onCreateMediaControlView(Bundle savedInstanceState) {
93        return null;
94    }
95
96    /**
97     * Gets the media control view that was created by {@link #onCreateMediaControlView(Bundle)}.
98     *
99     * @return The media control view, or null if none.
100     */
101    public View getMediaControlView() {
102        return mControlView;
103    }
104
105    @Override
106    protected void onCreate(Bundle savedInstanceState) {
107        super.onCreate(savedInstanceState);
108
109        getWindow().requestFeature(Window.FEATURE_LEFT_ICON);
110
111        setContentView(R.layout.mr_media_route_controller_dialog);
112
113        mVolumeLayout = (LinearLayout)findViewById(R.id.media_route_volume_layout);
114        mVolumeSlider = (SeekBar)findViewById(R.id.media_route_volume_slider);
115        mVolumeDivider = (ImageView)findViewById(R.id.media_route_volume_divider);
116        mVolumeSlider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
117            @Override
118            public void onStartTrackingTouch(SeekBar seekBar) {
119                mVolumeSliderTouched = true;
120            }
121
122            @Override
123            public void onStopTrackingTouch(SeekBar seekBar) {
124                mVolumeSliderTouched = false;
125                updateVolume();
126            }
127
128            @Override
129            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
130                if (fromUser) {
131                    mRoute.requestSetVolume(progress);
132                }
133            }
134        });
135
136        mDisconnectButton = (Button)findViewById(R.id.media_route_disconnect_button);
137        mDisconnectButton.setOnClickListener(new View.OnClickListener() {
138            @Override
139            public void onClick(View v) {
140                if (mRoute.isSelected()) {
141                    mRouter.getDefaultRoute().select();
142                }
143                dismiss();
144            }
145        });
146
147        if (update()) {
148            mControlView = onCreateMediaControlView(savedInstanceState);
149            if (mControlView != null) {
150                FrameLayout controlFrame =
151                        (FrameLayout)findViewById(R.id.media_route_control_frame);
152                ImageView controlDivider =
153                        (ImageView)findViewById(R.id.media_route_control_divider);
154                controlFrame.addView(controlFrame);
155                controlFrame.setVisibility(View.VISIBLE);
156                controlDivider.setVisibility(View.VISIBLE);
157            }
158        }
159    }
160
161    @Override
162    public void onAttachedToWindow() {
163        super.onAttachedToWindow();
164
165        mRouter.addCallback(MediaRouteSelector.EMPTY, mCallback,
166                MediaRouter.CALLBACK_FLAG_UNFILTERED_EVENTS);
167        update();
168    }
169
170    @Override
171    public void onDetachedFromWindow() {
172        mRouter.removeCallback(mCallback);
173
174        super.onDetachedFromWindow();
175    }
176
177    @Override
178    public boolean onKeyDown(int keyCode, KeyEvent event) {
179        if (mRoute.getVolumeHandling() == MediaRouter.RouteInfo.PLAYBACK_VOLUME_VARIABLE) {
180            if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
181                mRoute.requestUpdateVolume(-1);
182                return true;
183            } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
184                mRoute.requestUpdateVolume(1);
185                return true;
186            }
187        }
188        return super.onKeyDown(keyCode, event);
189    }
190
191    @Override
192    public boolean onKeyUp(int keyCode, KeyEvent event) {
193        if (mRoute.getVolumeHandling() == MediaRouter.RouteInfo.PLAYBACK_VOLUME_VARIABLE) {
194            if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
195                    || keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
196                return true;
197            }
198        }
199        return super.onKeyUp(keyCode, event);
200    }
201
202    private boolean update() {
203        if (!mRoute.isSelected() || mRoute.isDefault()) {
204            dismiss();
205            return false;
206        }
207
208        setTitle(mRoute.getName());
209        updateVolume();
210
211        Drawable icon = getIconDrawable();
212        if (icon != mCurrentIconDrawable) {
213            mCurrentIconDrawable = icon;
214
215            // There seems to be a bug in the framework where feature drawables
216            // will not start animating unless they experience a transition from
217            // invisible to visible.  So we force the drawable to be invisible here.
218            // The window will make the drawable visible when attached.
219            icon.setVisible(false, true);
220            getWindow().setFeatureDrawable(Window.FEATURE_LEFT_ICON, icon);
221        }
222        return true;
223    }
224
225    private Drawable getIconDrawable() {
226        if (mRoute.isConnecting()) {
227            if (mMediaRouteConnectingDrawable == null) {
228                mMediaRouteConnectingDrawable = MediaRouterThemeHelper.getThemeDrawable(
229                        getContext(), R.attr.mediaRouteConnectingDrawable);
230            }
231            return mMediaRouteConnectingDrawable;
232        } else {
233            if (mMediaRouteOnDrawable == null) {
234                mMediaRouteOnDrawable = MediaRouterThemeHelper.getThemeDrawable(
235                        getContext(), R.attr.mediaRouteOnDrawable);
236            }
237            return mMediaRouteOnDrawable;
238        }
239    }
240
241    private void updateVolume() {
242        if (!mVolumeSliderTouched) {
243            if (mRoute.getVolumeHandling() == MediaRouter.RouteInfo.PLAYBACK_VOLUME_VARIABLE) {
244                mVolumeLayout.setVisibility(View.VISIBLE);
245                mVolumeDivider.setVisibility(View.VISIBLE);
246                mVolumeSlider.setMax(mRoute.getVolumeMax());
247                mVolumeSlider.setProgress(mRoute.getVolume());
248            } else {
249                mVolumeLayout.setVisibility(View.GONE);
250                mVolumeDivider.setVisibility(View.GONE);
251            }
252        }
253    }
254
255    private final class MediaRouterCallback extends MediaRouter.Callback {
256        @Override
257        public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) {
258            update();
259        }
260
261        @Override
262        public void onRouteChanged(MediaRouter router, MediaRouter.RouteInfo route) {
263            update();
264        }
265
266        @Override
267        public void onRouteVolumeChanged(MediaRouter router, MediaRouter.RouteInfo route) {
268            if (route == mRoute) {
269                updateVolume();
270            }
271        }
272    }
273}
274