1 /*
2  * Copyright (C) 2012 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 
17 package com.android.settings.wfd;
18 
19 import android.app.ActionBar;
20 import android.app.Activity;
21 import android.app.AlertDialog;
22 import android.app.Service;
23 import android.content.BroadcastReceiver;
24 import android.content.Context;
25 import android.content.DialogInterface;
26 import android.content.Intent;
27 import android.content.IntentFilter;
28 import android.database.ContentObserver;
29 import android.hardware.display.DisplayManager;
30 import android.hardware.display.WifiDisplay;
31 import android.hardware.display.WifiDisplayStatus;
32 import android.media.MediaRouter;
33 import android.media.MediaRouter.RouteInfo;
34 import android.net.Uri;
35 import android.net.wifi.p2p.WifiP2pManager;
36 import android.net.wifi.p2p.WifiP2pManager.ActionListener;
37 import android.net.wifi.p2p.WifiP2pManager.Channel;
38 import android.net.wifi.WpsInfo;
39 import android.os.Bundle;
40 import android.os.Handler;
41 import android.os.Looper;
42 import android.preference.ListPreference;
43 import android.preference.Preference;
44 import android.preference.PreferenceCategory;
45 import android.preference.PreferenceGroup;
46 import android.preference.PreferenceScreen;
47 import android.preference.SwitchPreference;
48 import android.provider.Settings;
49 import android.util.Slog;
50 import android.util.TypedValue;
51 import android.view.LayoutInflater;
52 import android.view.Menu;
53 import android.view.MenuInflater;
54 import android.view.MenuItem;
55 import android.view.View;
56 import android.view.View.OnClickListener;
57 import android.view.ViewGroup;
58 import android.widget.Button;
59 import android.widget.EditText;
60 import android.widget.ImageView;
61 import android.widget.TextView;
62 
63 import com.android.internal.app.MediaRouteDialogPresenter;
64 import com.android.settings.R;
65 import com.android.settings.SettingsPreferenceFragment;
66 
67 /**
68  * The Settings screen for WifiDisplay configuration and connection management.
69  *
70  * The wifi display routes are integrated together with other remote display routes
71  * from the media router.  It may happen that wifi display isn't actually available
72  * on the system.  In that case, the enable option will not be shown but other
73  * remote display routes will continue to be made available.
74  */
75 public final class WifiDisplaySettings extends SettingsPreferenceFragment {
76     private static final String TAG = "WifiDisplaySettings";
77     private static final boolean DEBUG = false;
78 
79     private static final int MENU_ID_ENABLE_WIFI_DISPLAY = Menu.FIRST;
80 
81     private static final int CHANGE_SETTINGS = 1 << 0;
82     private static final int CHANGE_ROUTES = 1 << 1;
83     private static final int CHANGE_WIFI_DISPLAY_STATUS = 1 << 2;
84     private static final int CHANGE_ALL = -1;
85 
86     private static final int ORDER_CERTIFICATION = 1;
87     private static final int ORDER_CONNECTED = 2;
88     private static final int ORDER_AVAILABLE = 3;
89     private static final int ORDER_UNAVAILABLE = 4;
90 
91     private final Handler mHandler;
92 
93     private MediaRouter mRouter;
94     private DisplayManager mDisplayManager;
95 
96     private boolean mStarted;
97     private int mPendingChanges;
98 
99     private boolean mWifiDisplayOnSetting;
100     private WifiDisplayStatus mWifiDisplayStatus;
101 
102     private TextView mEmptyView;
103 
104     /* certification */
105     private boolean mWifiDisplayCertificationOn;
106     private WifiP2pManager mWifiP2pManager;
107     private Channel mWifiP2pChannel;
108     private PreferenceGroup mCertCategory;
109     private boolean mListen;
110     private boolean mAutoGO;
111     private int mWpsConfig = WpsInfo.INVALID;
112     private int mListenChannel;
113     private int mOperatingChannel;
114 
WifiDisplaySettings()115     public WifiDisplaySettings() {
116         mHandler = new Handler();
117     }
118 
119     @Override
onCreate(Bundle icicle)120     public void onCreate(Bundle icicle) {
121         super.onCreate(icicle);
122 
123         final Context context = getActivity();
124         mRouter = (MediaRouter)context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
125         mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE);
126         mWifiP2pManager = (WifiP2pManager)context.getSystemService(Context.WIFI_P2P_SERVICE);
127         mWifiP2pChannel = mWifiP2pManager.initialize(context, Looper.getMainLooper(), null);
128 
129         addPreferencesFromResource(R.xml.wifi_display_settings);
130         setHasOptionsMenu(true);
131     }
132 
133     @Override
getHelpResource()134     protected int getHelpResource() {
135         return R.string.help_url_remote_display;
136     }
137 
138     @Override
onActivityCreated(Bundle savedInstanceState)139     public void onActivityCreated(Bundle savedInstanceState) {
140         super.onActivityCreated(savedInstanceState);
141 
142         mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
143         mEmptyView.setText(R.string.wifi_display_no_devices_found);
144         getListView().setEmptyView(mEmptyView);
145     }
146 
147     @Override
onStart()148     public void onStart() {
149         super.onStart();
150         mStarted = true;
151 
152         final Context context = getActivity();
153         IntentFilter filter = new IntentFilter();
154         filter.addAction(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED);
155         context.registerReceiver(mReceiver, filter);
156 
157         getContentResolver().registerContentObserver(Settings.Global.getUriFor(
158                 Settings.Global.WIFI_DISPLAY_ON), false, mSettingsObserver);
159         getContentResolver().registerContentObserver(Settings.Global.getUriFor(
160                 Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON), false, mSettingsObserver);
161         getContentResolver().registerContentObserver(Settings.Global.getUriFor(
162                 Settings.Global.WIFI_DISPLAY_WPS_CONFIG), false, mSettingsObserver);
163 
164         mRouter.addCallback(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, mRouterCallback,
165                 MediaRouter.CALLBACK_FLAG_PERFORM_ACTIVE_SCAN);
166 
167         update(CHANGE_ALL);
168     }
169 
170     @Override
onStop()171     public void onStop() {
172         super.onStop();
173         mStarted = false;
174 
175         final Context context = getActivity();
176         context.unregisterReceiver(mReceiver);
177 
178         getContentResolver().unregisterContentObserver(mSettingsObserver);
179 
180         mRouter.removeCallback(mRouterCallback);
181 
182         unscheduleUpdate();
183     }
184 
185     @Override
onCreateOptionsMenu(Menu menu, MenuInflater inflater)186     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
187         if (mWifiDisplayStatus != null && mWifiDisplayStatus.getFeatureState()
188                 != WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) {
189             MenuItem item = menu.add(Menu.NONE, MENU_ID_ENABLE_WIFI_DISPLAY, 0,
190                     R.string.wifi_display_enable_menu_item);
191             item.setCheckable(true);
192             item.setChecked(mWifiDisplayOnSetting);
193         }
194         super.onCreateOptionsMenu(menu, inflater);
195     }
196 
197     @Override
onOptionsItemSelected(MenuItem item)198     public boolean onOptionsItemSelected(MenuItem item) {
199         switch (item.getItemId()) {
200             case MENU_ID_ENABLE_WIFI_DISPLAY:
201                 mWifiDisplayOnSetting = !item.isChecked();
202                 item.setChecked(mWifiDisplayOnSetting);
203                 Settings.Global.putInt(getContentResolver(),
204                         Settings.Global.WIFI_DISPLAY_ON, mWifiDisplayOnSetting ? 1 : 0);
205                 return true;
206         }
207         return super.onOptionsItemSelected(item);
208     }
209 
scheduleUpdate(int changes)210     private void scheduleUpdate(int changes) {
211         if (mStarted) {
212             if (mPendingChanges == 0) {
213                 mHandler.post(mUpdateRunnable);
214             }
215             mPendingChanges |= changes;
216         }
217     }
218 
unscheduleUpdate()219     private void unscheduleUpdate() {
220         if (mPendingChanges != 0) {
221             mPendingChanges = 0;
222             mHandler.removeCallbacks(mUpdateRunnable);
223         }
224     }
225 
update(int changes)226     private void update(int changes) {
227         boolean invalidateOptions = false;
228 
229         // Update settings.
230         if ((changes & CHANGE_SETTINGS) != 0) {
231             mWifiDisplayOnSetting = Settings.Global.getInt(getContentResolver(),
232                     Settings.Global.WIFI_DISPLAY_ON, 0) != 0;
233             mWifiDisplayCertificationOn = Settings.Global.getInt(getContentResolver(),
234                     Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON, 0) != 0;
235             mWpsConfig = Settings.Global.getInt(getContentResolver(),
236                 Settings.Global.WIFI_DISPLAY_WPS_CONFIG, WpsInfo.INVALID);
237 
238             // The wifi display enabled setting may have changed.
239             invalidateOptions = true;
240         }
241 
242         // Update wifi display state.
243         if ((changes & CHANGE_WIFI_DISPLAY_STATUS) != 0) {
244             mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
245 
246             // The wifi display feature state may have changed.
247             invalidateOptions = true;
248         }
249 
250         // Rebuild the routes.
251         final PreferenceScreen preferenceScreen = getPreferenceScreen();
252         preferenceScreen.removeAll();
253 
254         // Add all known remote display routes.
255         final int routeCount = mRouter.getRouteCount();
256         for (int i = 0; i < routeCount; i++) {
257             MediaRouter.RouteInfo route = mRouter.getRouteAt(i);
258             if (route.matchesTypes(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY)) {
259                 preferenceScreen.addPreference(createRoutePreference(route));
260             }
261         }
262 
263         // Additional features for wifi display routes.
264         if (mWifiDisplayStatus != null
265                 && mWifiDisplayStatus.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_ON) {
266             // Add all unpaired wifi displays.
267             for (WifiDisplay display : mWifiDisplayStatus.getDisplays()) {
268                 if (!display.isRemembered() && display.isAvailable()
269                         && !display.equals(mWifiDisplayStatus.getActiveDisplay())) {
270                     preferenceScreen.addPreference(new UnpairedWifiDisplayPreference(
271                             getActivity(), display));
272                 }
273             }
274 
275             // Add the certification menu if enabled in developer options.
276             if (mWifiDisplayCertificationOn) {
277                 buildCertificationMenu(preferenceScreen);
278             }
279         }
280 
281         // Invalidate menu options if needed.
282         if (invalidateOptions) {
283             getActivity().invalidateOptionsMenu();
284         }
285     }
286 
createRoutePreference(MediaRouter.RouteInfo route)287     private RoutePreference createRoutePreference(MediaRouter.RouteInfo route) {
288         WifiDisplay display = findWifiDisplay(route.getDeviceAddress());
289         if (display != null) {
290             return new WifiDisplayRoutePreference(getActivity(), route, display);
291         } else {
292             return new RoutePreference(getActivity(), route);
293         }
294     }
295 
findWifiDisplay(String deviceAddress)296     private WifiDisplay findWifiDisplay(String deviceAddress) {
297         if (mWifiDisplayStatus != null && deviceAddress != null) {
298             for (WifiDisplay display : mWifiDisplayStatus.getDisplays()) {
299                 if (display.getDeviceAddress().equals(deviceAddress)) {
300                     return display;
301                 }
302             }
303         }
304         return null;
305     }
306 
buildCertificationMenu(final PreferenceScreen preferenceScreen)307     private void buildCertificationMenu(final PreferenceScreen preferenceScreen) {
308         if (mCertCategory == null) {
309             mCertCategory = new PreferenceCategory(getActivity());
310             mCertCategory.setTitle(R.string.wifi_display_certification_heading);
311             mCertCategory.setOrder(ORDER_CERTIFICATION);
312         } else {
313             mCertCategory.removeAll();
314         }
315         preferenceScreen.addPreference(mCertCategory);
316 
317         // display session info if there is an active p2p session
318         if (!mWifiDisplayStatus.getSessionInfo().getGroupId().isEmpty()) {
319             Preference p = new Preference(getActivity());
320             p.setTitle(R.string.wifi_display_session_info);
321             p.setSummary(mWifiDisplayStatus.getSessionInfo().toString());
322             mCertCategory.addPreference(p);
323 
324             // show buttons for Pause/Resume when a WFD session is established
325             if (mWifiDisplayStatus.getSessionInfo().getSessionId() != 0) {
326                 mCertCategory.addPreference(new Preference(getActivity()) {
327                     @Override
328                     public View getView(View convertView, ViewGroup parent) {
329                         final View v;
330                         if (convertView == null) {
331                             LayoutInflater li = (LayoutInflater) getActivity().
332                                     getSystemService(Service.LAYOUT_INFLATER_SERVICE);
333                             v = li.inflate(R.layout.two_buttons_panel, null);
334                         } else {
335                             v = convertView;
336                         }
337 
338                         Button b = (Button)v.findViewById(R.id.left_button);
339                         b.setText(R.string.wifi_display_pause);
340                         b.setOnClickListener(new OnClickListener() {
341                             @Override
342                             public void onClick(View v) {
343                                 mDisplayManager.pauseWifiDisplay();
344                             }
345                         });
346 
347                         b = (Button)v.findViewById(R.id.right_button);
348                         b.setText(R.string.wifi_display_resume);
349                         b.setOnClickListener(new OnClickListener() {
350                             @Override
351                             public void onClick(View v) {
352                                 mDisplayManager.resumeWifiDisplay();
353                             }
354                         });
355 
356                         return v;
357                     }
358                 });
359             }
360         }
361 
362         // switch for Listen Mode
363         SwitchPreference pref = new SwitchPreference(getActivity()) {
364             @Override
365             protected void onClick() {
366                 mListen = !mListen;
367                 setListenMode(mListen);
368                 setChecked(mListen);
369             }
370         };
371         pref.setTitle(R.string.wifi_display_listen_mode);
372         pref.setChecked(mListen);
373         mCertCategory.addPreference(pref);
374 
375         // switch for Autonomous GO
376         pref = new SwitchPreference(getActivity()) {
377             @Override
378             protected void onClick() {
379                 mAutoGO = !mAutoGO;
380                 if (mAutoGO) {
381                     startAutoGO();
382                 } else {
383                     stopAutoGO();
384                 }
385                 setChecked(mAutoGO);
386             }
387         };
388         pref.setTitle(R.string.wifi_display_autonomous_go);
389         pref.setChecked(mAutoGO);
390         mCertCategory.addPreference(pref);
391 
392         // Drop down list for choosing WPS method (PBC/KEYPAD/DISPLAY)
393         ListPreference lp = new ListPreference(getActivity()) {
394             @Override
395             protected void onDialogClosed(boolean positiveResult) {
396                 super.onDialogClosed(positiveResult);
397                 if (positiveResult) {
398                     mWpsConfig = Integer.parseInt(getValue());
399                     setSummary("%1$s");
400                     getActivity().invalidateOptionsMenu();
401                     Settings.Global.putInt(getActivity().getContentResolver(),
402                             Settings.Global.WIFI_DISPLAY_WPS_CONFIG, mWpsConfig);
403                 }
404             }
405         };
406         mWpsConfig = Settings.Global.getInt(getActivity().getContentResolver(),
407                 Settings.Global.WIFI_DISPLAY_WPS_CONFIG, WpsInfo.INVALID);
408         String[] wpsEntries = { "Default", "PBC", "KEYPAD", "DISPLAY" };
409         String[] wpsValues = {
410             "" + WpsInfo.INVALID,
411             "" + WpsInfo.PBC,
412             "" + WpsInfo.KEYPAD,
413             "" + WpsInfo.DISPLAY };
414         lp.setTitle(R.string.wifi_display_wps_config);
415         lp.setEntries(wpsEntries);
416         lp.setEntryValues(wpsValues);
417         lp.setValue("" + mWpsConfig);
418         lp.setSummary("%1$s");
419         mCertCategory.addPreference(lp);
420 
421         // Drop down list for choosing listen channel
422         lp = new ListPreference(getActivity()) {
423             @Override
424             protected void onDialogClosed(boolean positiveResult) {
425                 super.onDialogClosed(positiveResult);
426                 if (positiveResult) {
427                     mListenChannel = Integer.parseInt(getValue());
428                     setSummary("%1$s");
429                     getActivity().invalidateOptionsMenu();
430                     setWifiP2pChannels(mListenChannel, mOperatingChannel);
431                 }
432             }
433         };
434         String[] lcEntries = { "Auto", "1", "6", "11" };
435         String[] lcValues = { "0", "1", "6", "11" };
436         lp.setTitle(R.string.wifi_display_listen_channel);
437         lp.setEntries(lcEntries);
438         lp.setEntryValues(lcValues);
439         lp.setValue("" + mListenChannel);
440         lp.setSummary("%1$s");
441         mCertCategory.addPreference(lp);
442 
443         // Drop down list for choosing operating channel
444         lp = new ListPreference(getActivity()) {
445             @Override
446             protected void onDialogClosed(boolean positiveResult) {
447                 super.onDialogClosed(positiveResult);
448                 if (positiveResult) {
449                     mOperatingChannel = Integer.parseInt(getValue());
450                     setSummary("%1$s");
451                     getActivity().invalidateOptionsMenu();
452                     setWifiP2pChannels(mListenChannel, mOperatingChannel);
453                 }
454             }
455         };
456         String[] ocEntries = { "Auto", "1", "6", "11", "36" };
457         String[] ocValues = { "0", "1", "6", "11", "36" };
458         lp.setTitle(R.string.wifi_display_operating_channel);
459         lp.setEntries(ocEntries);
460         lp.setEntryValues(ocValues);
461         lp.setValue("" + mOperatingChannel);
462         lp.setSummary("%1$s");
463         mCertCategory.addPreference(lp);
464     }
465 
startAutoGO()466     private void startAutoGO() {
467         if (DEBUG) {
468             Slog.d(TAG, "Starting Autonomous GO...");
469         }
470         mWifiP2pManager.createGroup(mWifiP2pChannel, new ActionListener() {
471             @Override
472             public void onSuccess() {
473                 if (DEBUG) {
474                     Slog.d(TAG, "Successfully started AutoGO.");
475                 }
476             }
477 
478             @Override
479             public void onFailure(int reason) {
480                 Slog.e(TAG, "Failed to start AutoGO with reason " + reason + ".");
481             }
482         });
483     }
484 
stopAutoGO()485     private void stopAutoGO() {
486         if (DEBUG) {
487             Slog.d(TAG, "Stopping Autonomous GO...");
488         }
489         mWifiP2pManager.removeGroup(mWifiP2pChannel, new ActionListener() {
490             @Override
491             public void onSuccess() {
492                 if (DEBUG) {
493                     Slog.d(TAG, "Successfully stopped AutoGO.");
494                 }
495             }
496 
497             @Override
498             public void onFailure(int reason) {
499                 Slog.e(TAG, "Failed to stop AutoGO with reason " + reason + ".");
500             }
501         });
502     }
503 
setListenMode(final boolean enable)504     private void setListenMode(final boolean enable) {
505         if (DEBUG) {
506             Slog.d(TAG, "Setting listen mode to: " + enable);
507         }
508         mWifiP2pManager.listen(mWifiP2pChannel, enable, new ActionListener() {
509             @Override
510             public void onSuccess() {
511                 if (DEBUG) {
512                     Slog.d(TAG, "Successfully " + (enable ? "entered" : "exited")
513                             +" listen mode.");
514                 }
515             }
516 
517             @Override
518             public void onFailure(int reason) {
519                 Slog.e(TAG, "Failed to " + (enable ? "entered" : "exited")
520                         +" listen mode with reason " + reason + ".");
521             }
522         });
523     }
524 
setWifiP2pChannels(final int lc, final int oc)525     private void setWifiP2pChannels(final int lc, final int oc) {
526         if (DEBUG) {
527             Slog.d(TAG, "Setting wifi p2p channel: lc=" + lc + ", oc=" + oc);
528         }
529         mWifiP2pManager.setWifiP2pChannels(mWifiP2pChannel,
530                 lc, oc, new ActionListener() {
531             @Override
532             public void onSuccess() {
533                 if (DEBUG) {
534                     Slog.d(TAG, "Successfully set wifi p2p channels.");
535                 }
536             }
537 
538             @Override
539             public void onFailure(int reason) {
540                 Slog.e(TAG, "Failed to set wifi p2p channels with reason " + reason + ".");
541             }
542         });
543     }
544 
toggleRoute(MediaRouter.RouteInfo route)545     private void toggleRoute(MediaRouter.RouteInfo route) {
546         if (route.isSelected()) {
547             MediaRouteDialogPresenter.showDialogFragment(getActivity(),
548                     MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, null);
549         } else {
550             route.select();
551         }
552     }
553 
pairWifiDisplay(WifiDisplay display)554     private void pairWifiDisplay(WifiDisplay display) {
555         if (display.canConnect()) {
556             mDisplayManager.connectWifiDisplay(display.getDeviceAddress());
557         }
558     }
559 
showWifiDisplayOptionsDialog(final WifiDisplay display)560     private void showWifiDisplayOptionsDialog(final WifiDisplay display) {
561         View view = getActivity().getLayoutInflater().inflate(R.layout.wifi_display_options, null);
562         final EditText nameEditText = (EditText)view.findViewById(R.id.name);
563         nameEditText.setText(display.getFriendlyDisplayName());
564 
565         DialogInterface.OnClickListener done = new DialogInterface.OnClickListener() {
566             @Override
567             public void onClick(DialogInterface dialog, int which) {
568                 String name = nameEditText.getText().toString().trim();
569                 if (name.isEmpty() || name.equals(display.getDeviceName())) {
570                     name = null;
571                 }
572                 mDisplayManager.renameWifiDisplay(display.getDeviceAddress(), name);
573             }
574         };
575         DialogInterface.OnClickListener forget = new DialogInterface.OnClickListener() {
576             @Override
577             public void onClick(DialogInterface dialog, int which) {
578                 mDisplayManager.forgetWifiDisplay(display.getDeviceAddress());
579             }
580         };
581 
582         AlertDialog dialog = new AlertDialog.Builder(getActivity())
583                 .setCancelable(true)
584                 .setTitle(R.string.wifi_display_options_title)
585                 .setView(view)
586                 .setPositiveButton(R.string.wifi_display_options_done, done)
587                 .setNegativeButton(R.string.wifi_display_options_forget, forget)
588                 .create();
589         dialog.show();
590     }
591 
592     private final Runnable mUpdateRunnable = new Runnable() {
593         @Override
594         public void run() {
595             final int changes = mPendingChanges;
596             mPendingChanges = 0;
597             update(changes);
598         }
599     };
600 
601     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
602         @Override
603         public void onReceive(Context context, Intent intent) {
604             String action = intent.getAction();
605             if (action.equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) {
606                 scheduleUpdate(CHANGE_WIFI_DISPLAY_STATUS);
607             }
608         }
609     };
610 
611     private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
612         @Override
613         public void onChange(boolean selfChange, Uri uri) {
614             scheduleUpdate(CHANGE_SETTINGS);
615         }
616     };
617 
618     private final MediaRouter.Callback mRouterCallback = new MediaRouter.SimpleCallback() {
619         @Override
620         public void onRouteAdded(MediaRouter router, RouteInfo info) {
621             scheduleUpdate(CHANGE_ROUTES);
622         }
623 
624         @Override
625         public void onRouteChanged(MediaRouter router, RouteInfo info) {
626             scheduleUpdate(CHANGE_ROUTES);
627         }
628 
629         @Override
630         public void onRouteRemoved(MediaRouter router, RouteInfo info) {
631             scheduleUpdate(CHANGE_ROUTES);
632         }
633 
634         @Override
635         public void onRouteSelected(MediaRouter router, int type, RouteInfo info) {
636             scheduleUpdate(CHANGE_ROUTES);
637         }
638 
639         @Override
640         public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) {
641             scheduleUpdate(CHANGE_ROUTES);
642         }
643     };
644 
645     private class RoutePreference extends Preference
646             implements Preference.OnPreferenceClickListener {
647         private final MediaRouter.RouteInfo mRoute;
648 
RoutePreference(Context context, MediaRouter.RouteInfo route)649         public RoutePreference(Context context, MediaRouter.RouteInfo route) {
650             super(context);
651 
652             mRoute = route;
653             setTitle(route.getName());
654             setSummary(route.getDescription());
655             setEnabled(route.isEnabled());
656             if (route.isSelected()) {
657                 setOrder(ORDER_CONNECTED);
658                 if (route.isConnecting()) {
659                     setSummary(R.string.wifi_display_status_connecting);
660                 } else {
661                     setSummary(R.string.wifi_display_status_connected);
662                 }
663             } else {
664                 if (isEnabled()) {
665                     setOrder(ORDER_AVAILABLE);
666                 } else {
667                     setOrder(ORDER_UNAVAILABLE);
668                     if (route.getStatusCode() == MediaRouter.RouteInfo.STATUS_IN_USE) {
669                         setSummary(R.string.wifi_display_status_in_use);
670                     } else {
671                         setSummary(R.string.wifi_display_status_not_available);
672                     }
673                 }
674             }
675             setOnPreferenceClickListener(this);
676         }
677 
678         @Override
onPreferenceClick(Preference preference)679         public boolean onPreferenceClick(Preference preference) {
680             toggleRoute(mRoute);
681             return true;
682         }
683     }
684 
685     private class WifiDisplayRoutePreference extends RoutePreference
686             implements View.OnClickListener {
687         private final WifiDisplay mDisplay;
688 
WifiDisplayRoutePreference(Context context, MediaRouter.RouteInfo route, WifiDisplay display)689         public WifiDisplayRoutePreference(Context context, MediaRouter.RouteInfo route,
690                 WifiDisplay display) {
691             super(context, route);
692 
693             mDisplay = display;
694             setWidgetLayoutResource(R.layout.wifi_display_preference);
695         }
696 
697         @Override
onBindView(View view)698         protected void onBindView(View view) {
699             super.onBindView(view);
700 
701             ImageView deviceDetails = (ImageView) view.findViewById(R.id.deviceDetails);
702             if (deviceDetails != null) {
703                 deviceDetails.setOnClickListener(this);
704                 if (!isEnabled()) {
705                     TypedValue value = new TypedValue();
706                     getContext().getTheme().resolveAttribute(android.R.attr.disabledAlpha,
707                             value, true);
708                     deviceDetails.setImageAlpha((int)(value.getFloat() * 255));
709                     deviceDetails.setEnabled(true); // always allow button to be pressed
710                 }
711             }
712         }
713 
714         @Override
onClick(View v)715         public void onClick(View v) {
716             showWifiDisplayOptionsDialog(mDisplay);
717         }
718     }
719 
720     private class UnpairedWifiDisplayPreference extends Preference
721             implements Preference.OnPreferenceClickListener {
722         private final WifiDisplay mDisplay;
723 
UnpairedWifiDisplayPreference(Context context, WifiDisplay display)724         public UnpairedWifiDisplayPreference(Context context, WifiDisplay display) {
725             super(context);
726 
727             mDisplay = display;
728             setTitle(display.getFriendlyDisplayName());
729             setSummary(com.android.internal.R.string.wireless_display_route_description);
730             setEnabled(display.canConnect());
731             if (isEnabled()) {
732                 setOrder(ORDER_AVAILABLE);
733             } else {
734                 setOrder(ORDER_UNAVAILABLE);
735                 setSummary(R.string.wifi_display_status_in_use);
736             }
737             setOnPreferenceClickListener(this);
738         }
739 
740         @Override
onPreferenceClick(Preference preference)741         public boolean onPreferenceClick(Preference preference) {
742             pairWifiDisplay(mDisplay);
743             return true;
744         }
745     }
746 }
747