WifiDisplaySettings.java revision 9a23adf69dc53126c9858b19760eab5b67c23b97 
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
17package com.android.settings.wfd;
18
19import android.app.AlertDialog;
20import android.app.Service;
21import android.content.BroadcastReceiver;
22import android.content.Context;
23import android.content.DialogInterface;
24import android.content.Intent;
25import android.content.IntentFilter;
26import android.database.ContentObserver;
27import android.hardware.display.DisplayManager;
28import android.hardware.display.WifiDisplay;
29import android.hardware.display.WifiDisplayStatus;
30import android.media.MediaRouter;
31import android.media.MediaRouter.RouteInfo;
32import android.net.Uri;
33import android.net.wifi.p2p.WifiP2pManager;
34import android.net.wifi.p2p.WifiP2pManager.ActionListener;
35import android.net.wifi.p2p.WifiP2pManager.Channel;
36import android.net.wifi.WpsInfo;
37import android.os.Bundle;
38import android.os.Handler;
39import android.os.Looper;
40import android.preference.ListPreference;
41import android.preference.Preference;
42import android.preference.PreferenceCategory;
43import android.preference.PreferenceGroup;
44import android.preference.PreferenceScreen;
45import android.preference.SwitchPreference;
46import android.provider.Settings;
47import android.util.Slog;
48import android.util.TypedValue;
49import android.view.LayoutInflater;
50import android.view.Menu;
51import android.view.MenuInflater;
52import android.view.MenuItem;
53import android.view.View;
54import android.view.View.OnClickListener;
55import android.view.ViewGroup;
56import android.widget.Button;
57import android.widget.EditText;
58import android.widget.ImageView;
59import android.widget.TextView;
60
61import com.android.internal.app.MediaRouteDialogPresenter;
62import com.android.settings.R;
63import com.android.settings.SettingsPreferenceFragment;
64
65/**
66 * The Settings screen for WifiDisplay configuration and connection management.
67 *
68 * The wifi display routes are integrated together with other remote display routes
69 * from the media router.  It may happen that wifi display isn't actually available
70 * on the system.  In that case, the enable option will not be shown but other
71 * remote display routes will continue to be made available.
72 */
73public final class WifiDisplaySettings extends SettingsPreferenceFragment {
74    private static final String TAG = "WifiDisplaySettings";
75    private static final boolean DEBUG = false;
76
77    private static final int MENU_ID_ENABLE_WIFI_DISPLAY = Menu.FIRST;
78
79    private static final int CHANGE_SETTINGS = 1 << 0;
80    private static final int CHANGE_ROUTES = 1 << 1;
81    private static final int CHANGE_WIFI_DISPLAY_STATUS = 1 << 2;
82    private static final int CHANGE_ALL = -1;
83
84    private static final int ORDER_CERTIFICATION = 1;
85    private static final int ORDER_CONNECTED = 2;
86    private static final int ORDER_AVAILABLE = 3;
87    private static final int ORDER_UNAVAILABLE = 4;
88
89    private final Handler mHandler;
90
91    private MediaRouter mRouter;
92    private DisplayManager mDisplayManager;
93
94    private boolean mStarted;
95    private int mPendingChanges;
96
97    private boolean mWifiDisplayOnSetting;
98    private WifiDisplayStatus mWifiDisplayStatus;
99
100    private TextView mEmptyView;
101
102    /* certification */
103    private boolean mWifiDisplayCertificationOn;
104    private WifiP2pManager mWifiP2pManager;
105    private Channel mWifiP2pChannel;
106    private PreferenceGroup mCertCategory;
107    private boolean mListen;
108    private boolean mAutoGO;
109    private int mWpsConfig = WpsInfo.INVALID;
110    private int mListenChannel;
111    private int mOperatingChannel;
112
113    public WifiDisplaySettings() {
114        mHandler = new Handler();
115    }
116
117    @Override
118    public void onCreate(Bundle icicle) {
119        super.onCreate(icicle);
120
121        final Context context = getActivity();
122        mRouter = (MediaRouter)context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
123        mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE);
124        mWifiP2pManager = (WifiP2pManager)context.getSystemService(Context.WIFI_P2P_SERVICE);
125        mWifiP2pChannel = mWifiP2pManager.initialize(context, Looper.getMainLooper(), null);
126
127        addPreferencesFromResource(R.xml.wifi_display_settings);
128        setHasOptionsMenu(true);
129    }
130
131    @Override
132    protected int getHelpResource() {
133        return R.string.help_url_remote_display;
134    }
135
136    @Override
137    public void onActivityCreated(Bundle savedInstanceState) {
138        super.onActivityCreated(savedInstanceState);
139
140        mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
141        mEmptyView.setText(R.string.wifi_display_no_devices_found);
142        getListView().setEmptyView(mEmptyView);
143    }
144
145    @Override
146    public void onStart() {
147        super.onStart();
148        mStarted = true;
149
150        final Context context = getActivity();
151        IntentFilter filter = new IntentFilter();
152        filter.addAction(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED);
153        context.registerReceiver(mReceiver, filter);
154
155        getContentResolver().registerContentObserver(Settings.Global.getUriFor(
156                Settings.Global.WIFI_DISPLAY_ON), false, mSettingsObserver);
157        getContentResolver().registerContentObserver(Settings.Global.getUriFor(
158                Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON), false, mSettingsObserver);
159        getContentResolver().registerContentObserver(Settings.Global.getUriFor(
160                Settings.Global.WIFI_DISPLAY_WPS_CONFIG), false, mSettingsObserver);
161
162        mRouter.addCallback(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, mRouterCallback,
163                MediaRouter.CALLBACK_FLAG_PERFORM_ACTIVE_SCAN);
164
165        update(CHANGE_ALL);
166    }
167
168    @Override
169    public void onStop() {
170        super.onStop();
171        mStarted = false;
172
173        final Context context = getActivity();
174        context.unregisterReceiver(mReceiver);
175
176        getContentResolver().unregisterContentObserver(mSettingsObserver);
177
178        mRouter.removeCallback(mRouterCallback);
179
180        unscheduleUpdate();
181    }
182
183    @Override
184    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
185        if (mWifiDisplayStatus != null && mWifiDisplayStatus.getFeatureState()
186                != WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) {
187            MenuItem item = menu.add(Menu.NONE, MENU_ID_ENABLE_WIFI_DISPLAY, 0,
188                    R.string.wifi_display_enable_menu_item);
189            item.setCheckable(true);
190            item.setChecked(mWifiDisplayOnSetting);
191        }
192        super.onCreateOptionsMenu(menu, inflater);
193    }
194
195    @Override
196    public boolean onOptionsItemSelected(MenuItem item) {
197        switch (item.getItemId()) {
198            case MENU_ID_ENABLE_WIFI_DISPLAY:
199                mWifiDisplayOnSetting = !item.isChecked();
200                item.setChecked(mWifiDisplayOnSetting);
201                Settings.Global.putInt(getContentResolver(),
202                        Settings.Global.WIFI_DISPLAY_ON, mWifiDisplayOnSetting ? 1 : 0);
203                return true;
204        }
205        return super.onOptionsItemSelected(item);
206    }
207
208    private void scheduleUpdate(int changes) {
209        if (mStarted) {
210            if (mPendingChanges == 0) {
211                mHandler.post(mUpdateRunnable);
212            }
213            mPendingChanges |= changes;
214        }
215    }
216
217    private void unscheduleUpdate() {
218        if (mPendingChanges != 0) {
219            mPendingChanges = 0;
220            mHandler.removeCallbacks(mUpdateRunnable);
221        }
222    }
223
224    private void update(int changes) {
225        boolean invalidateOptions = false;
226
227        // Update settings.
228        if ((changes & CHANGE_SETTINGS) != 0) {
229            mWifiDisplayOnSetting = Settings.Global.getInt(getContentResolver(),
230                    Settings.Global.WIFI_DISPLAY_ON, 0) != 0;
231            mWifiDisplayCertificationOn = Settings.Global.getInt(getContentResolver(),
232                    Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON, 0) != 0;
233            mWpsConfig = Settings.Global.getInt(getContentResolver(),
234                Settings.Global.WIFI_DISPLAY_WPS_CONFIG, WpsInfo.INVALID);
235
236            // The wifi display enabled setting may have changed.
237            invalidateOptions = true;
238        }
239
240        // Update wifi display state.
241        if ((changes & CHANGE_WIFI_DISPLAY_STATUS) != 0) {
242            mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
243
244            // The wifi display feature state may have changed.
245            invalidateOptions = true;
246        }
247
248        // Rebuild the routes.
249        final PreferenceScreen preferenceScreen = getPreferenceScreen();
250        preferenceScreen.removeAll();
251
252        // Add all known remote display routes.
253        final int routeCount = mRouter.getRouteCount();
254        for (int i = 0; i < routeCount; i++) {
255            MediaRouter.RouteInfo route = mRouter.getRouteAt(i);
256            if (route.matchesTypes(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY)) {
257                preferenceScreen.addPreference(createRoutePreference(route));
258            }
259        }
260
261        // Additional features for wifi display routes.
262        if (mWifiDisplayStatus != null
263                && mWifiDisplayStatus.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_ON) {
264            // Add all unpaired wifi displays.
265            for (WifiDisplay display : mWifiDisplayStatus.getDisplays()) {
266                if (!display.isRemembered() && display.isAvailable()
267                        && !display.equals(mWifiDisplayStatus.getActiveDisplay())) {
268                    preferenceScreen.addPreference(new UnpairedWifiDisplayPreference(
269                            getActivity(), display));
270                }
271            }
272
273            // Add the certification menu if enabled in developer options.
274            if (mWifiDisplayCertificationOn) {
275                buildCertificationMenu(preferenceScreen);
276            }
277        }
278
279        // Invalidate menu options if needed.
280        if (invalidateOptions) {
281            getActivity().invalidateOptionsMenu();
282        }
283    }
284
285    private RoutePreference createRoutePreference(MediaRouter.RouteInfo route) {
286        WifiDisplay display = findWifiDisplay(route.getDeviceAddress());
287        if (display != null) {
288            return new WifiDisplayRoutePreference(getActivity(), route, display);
289        } else {
290            return new RoutePreference(getActivity(), route);
291        }
292    }
293
294    private WifiDisplay findWifiDisplay(String deviceAddress) {
295        if (mWifiDisplayStatus != null && deviceAddress != null) {
296            for (WifiDisplay display : mWifiDisplayStatus.getDisplays()) {
297                if (display.getDeviceAddress().equals(deviceAddress)) {
298                    return display;
299                }
300            }
301        }
302        return null;
303    }
304
305    private void buildCertificationMenu(final PreferenceScreen preferenceScreen) {
306        if (mCertCategory == null) {
307            mCertCategory = new PreferenceCategory(getActivity());
308            mCertCategory.setTitle(R.string.wifi_display_certification_heading);
309            mCertCategory.setOrder(ORDER_CERTIFICATION);
310        } else {
311            mCertCategory.removeAll();
312        }
313        preferenceScreen.addPreference(mCertCategory);
314
315        // display session info if there is an active p2p session
316        if (!mWifiDisplayStatus.getSessionInfo().getGroupId().isEmpty()) {
317            Preference p = new Preference(getActivity());
318            p.setTitle(R.string.wifi_display_session_info);
319            p.setSummary(mWifiDisplayStatus.getSessionInfo().toString());
320            mCertCategory.addPreference(p);
321
322            // show buttons for Pause/Resume when a WFD session is established
323            if (mWifiDisplayStatus.getSessionInfo().getSessionId() != 0) {
324                mCertCategory.addPreference(new Preference(getActivity()) {
325                    @Override
326                    public View getView(View convertView, ViewGroup parent) {
327                        final View v;
328                        if (convertView == null) {
329                            LayoutInflater li = (LayoutInflater) getActivity().
330                                    getSystemService(Service.LAYOUT_INFLATER_SERVICE);
331                            v = li.inflate(R.layout.two_buttons_panel, null);
332                        } else {
333                            v = convertView;
334                        }
335
336                        Button b = (Button)v.findViewById(R.id.left_button);
337                        b.setText(R.string.wifi_display_pause);
338                        b.setOnClickListener(new OnClickListener() {
339                            @Override
340                            public void onClick(View v) {
341                                mDisplayManager.pauseWifiDisplay();
342                            }
343                        });
344
345                        b = (Button)v.findViewById(R.id.right_button);
346                        b.setText(R.string.wifi_display_resume);
347                        b.setOnClickListener(new OnClickListener() {
348                            @Override
349                            public void onClick(View v) {
350                                mDisplayManager.resumeWifiDisplay();
351                            }
352                        });
353
354                        return v;
355                    }
356                });
357            }
358        }
359
360        // switch for Listen Mode
361        SwitchPreference pref = new SwitchPreference(getActivity()) {
362            @Override
363            protected void onClick() {
364                mListen = !mListen;
365                setListenMode(mListen);
366                setChecked(mListen);
367            }
368        };
369        pref.setTitle(R.string.wifi_display_listen_mode);
370        pref.setChecked(mListen);
371        mCertCategory.addPreference(pref);
372
373        // switch for Autonomous GO
374        pref = new SwitchPreference(getActivity()) {
375            @Override
376            protected void onClick() {
377                mAutoGO = !mAutoGO;
378                if (mAutoGO) {
379                    startAutoGO();
380                } else {
381                    stopAutoGO();
382                }
383                setChecked(mAutoGO);
384            }
385        };
386        pref.setTitle(R.string.wifi_display_autonomous_go);
387        pref.setChecked(mAutoGO);
388        mCertCategory.addPreference(pref);
389
390        // Drop down list for choosing WPS method (PBC/KEYPAD/DISPLAY)
391        ListPreference lp = new ListPreference(getActivity()) {
392            @Override
393            protected void onDialogClosed(boolean positiveResult) {
394                super.onDialogClosed(positiveResult);
395                if (positiveResult) {
396                    mWpsConfig = Integer.parseInt(getValue());
397                    setSummary("%1$s");
398                    getActivity().invalidateOptionsMenu();
399                    Settings.Global.putInt(getActivity().getContentResolver(),
400                            Settings.Global.WIFI_DISPLAY_WPS_CONFIG, mWpsConfig);
401                }
402            }
403        };
404        mWpsConfig = Settings.Global.getInt(getActivity().getContentResolver(),
405                Settings.Global.WIFI_DISPLAY_WPS_CONFIG, WpsInfo.INVALID);
406        String[] wpsEntries = { "Default", "PBC", "KEYPAD", "DISPLAY" };
407        String[] wpsValues = {
408            "" + WpsInfo.INVALID,
409            "" + WpsInfo.PBC,
410            "" + WpsInfo.KEYPAD,
411            "" + WpsInfo.DISPLAY };
412        lp.setTitle(R.string.wifi_display_wps_config);
413        lp.setEntries(wpsEntries);
414        lp.setEntryValues(wpsValues);
415        lp.setValue("" + mWpsConfig);
416        lp.setSummary("%1$s");
417        mCertCategory.addPreference(lp);
418
419        // Drop down list for choosing listen channel
420        lp = new ListPreference(getActivity()) {
421            @Override
422            protected void onDialogClosed(boolean positiveResult) {
423                super.onDialogClosed(positiveResult);
424                if (positiveResult) {
425                    mListenChannel = Integer.parseInt(getValue());
426                    setSummary("%1$s");
427                    getActivity().invalidateOptionsMenu();
428                    setWifiP2pChannels(mListenChannel, mOperatingChannel);
429                }
430            }
431        };
432        String[] lcEntries = { "Auto", "1", "6", "11" };
433        String[] lcValues = { "0", "1", "6", "11" };
434        lp.setTitle(R.string.wifi_display_listen_channel);
435        lp.setEntries(lcEntries);
436        lp.setEntryValues(lcValues);
437        lp.setValue("" + mListenChannel);
438        lp.setSummary("%1$s");
439        mCertCategory.addPreference(lp);
440
441        // Drop down list for choosing operating channel
442        lp = new ListPreference(getActivity()) {
443            @Override
444            protected void onDialogClosed(boolean positiveResult) {
445                super.onDialogClosed(positiveResult);
446                if (positiveResult) {
447                    mOperatingChannel = Integer.parseInt(getValue());
448                    setSummary("%1$s");
449                    getActivity().invalidateOptionsMenu();
450                    setWifiP2pChannels(mListenChannel, mOperatingChannel);
451                }
452            }
453        };
454        String[] ocEntries = { "Auto", "1", "6", "11", "36" };
455        String[] ocValues = { "0", "1", "6", "11", "36" };
456        lp.setTitle(R.string.wifi_display_operating_channel);
457        lp.setEntries(ocEntries);
458        lp.setEntryValues(ocValues);
459        lp.setValue("" + mOperatingChannel);
460        lp.setSummary("%1$s");
461        mCertCategory.addPreference(lp);
462    }
463
464    private void startAutoGO() {
465        if (DEBUG) {
466            Slog.d(TAG, "Starting Autonomous GO...");
467        }
468        mWifiP2pManager.createGroup(mWifiP2pChannel, new ActionListener() {
469            @Override
470            public void onSuccess() {
471                if (DEBUG) {
472                    Slog.d(TAG, "Successfully started AutoGO.");
473                }
474            }
475
476            @Override
477            public void onFailure(int reason) {
478                Slog.e(TAG, "Failed to start AutoGO with reason " + reason + ".");
479            }
480        });
481    }
482
483    private void stopAutoGO() {
484        if (DEBUG) {
485            Slog.d(TAG, "Stopping Autonomous GO...");
486        }
487        mWifiP2pManager.removeGroup(mWifiP2pChannel, new ActionListener() {
488            @Override
489            public void onSuccess() {
490                if (DEBUG) {
491                    Slog.d(TAG, "Successfully stopped AutoGO.");
492                }
493            }
494
495            @Override
496            public void onFailure(int reason) {
497                Slog.e(TAG, "Failed to stop AutoGO with reason " + reason + ".");
498            }
499        });
500    }
501
502    private void setListenMode(final boolean enable) {
503        if (DEBUG) {
504            Slog.d(TAG, "Setting listen mode to: " + enable);
505        }
506        mWifiP2pManager.listen(mWifiP2pChannel, enable, new ActionListener() {
507            @Override
508            public void onSuccess() {
509                if (DEBUG) {
510                    Slog.d(TAG, "Successfully " + (enable ? "entered" : "exited")
511                            +" listen mode.");
512                }
513            }
514
515            @Override
516            public void onFailure(int reason) {
517                Slog.e(TAG, "Failed to " + (enable ? "entered" : "exited")
518                        +" listen mode with reason " + reason + ".");
519            }
520        });
521    }
522
523    private void setWifiP2pChannels(final int lc, final int oc) {
524        if (DEBUG) {
525            Slog.d(TAG, "Setting wifi p2p channel: lc=" + lc + ", oc=" + oc);
526        }
527        mWifiP2pManager.setWifiP2pChannels(mWifiP2pChannel,
528                lc, oc, new ActionListener() {
529            @Override
530            public void onSuccess() {
531                if (DEBUG) {
532                    Slog.d(TAG, "Successfully set wifi p2p channels.");
533                }
534            }
535
536            @Override
537            public void onFailure(int reason) {
538                Slog.e(TAG, "Failed to set wifi p2p channels with reason " + reason + ".");
539            }
540        });
541    }
542
543    private void toggleRoute(MediaRouter.RouteInfo route) {
544        if (route.isSelected()) {
545            MediaRouteDialogPresenter.showDialogFragment(getActivity(),
546                    MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, null);
547        } else {
548            route.select();
549        }
550    }
551
552    private void pairWifiDisplay(WifiDisplay display) {
553        if (display.canConnect()) {
554            mDisplayManager.connectWifiDisplay(display.getDeviceAddress());
555        }
556    }
557
558    private void showWifiDisplayOptionsDialog(final WifiDisplay display) {
559        View view = getActivity().getLayoutInflater().inflate(R.layout.wifi_display_options, null);
560        final EditText nameEditText = (EditText)view.findViewById(R.id.name);
561        nameEditText.setText(display.getFriendlyDisplayName());
562
563        DialogInterface.OnClickListener done = new DialogInterface.OnClickListener() {
564            @Override
565            public void onClick(DialogInterface dialog, int which) {
566                String name = nameEditText.getText().toString().trim();
567                if (name.isEmpty() || name.equals(display.getDeviceName())) {
568                    name = null;
569                }
570                mDisplayManager.renameWifiDisplay(display.getDeviceAddress(), name);
571            }
572        };
573        DialogInterface.OnClickListener forget = new DialogInterface.OnClickListener() {
574            @Override
575            public void onClick(DialogInterface dialog, int which) {
576                mDisplayManager.forgetWifiDisplay(display.getDeviceAddress());
577            }
578        };
579
580        AlertDialog dialog = new AlertDialog.Builder(getActivity())
581                .setCancelable(true)
582                .setTitle(R.string.wifi_display_options_title)
583                .setView(view)
584                .setPositiveButton(R.string.wifi_display_options_done, done)
585                .setNegativeButton(R.string.wifi_display_options_forget, forget)
586                .create();
587        dialog.show();
588    }
589
590    private final Runnable mUpdateRunnable = new Runnable() {
591        @Override
592        public void run() {
593            final int changes = mPendingChanges;
594            mPendingChanges = 0;
595            update(changes);
596        }
597    };
598
599    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
600        @Override
601        public void onReceive(Context context, Intent intent) {
602            String action = intent.getAction();
603            if (action.equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) {
604                scheduleUpdate(CHANGE_WIFI_DISPLAY_STATUS);
605            }
606        }
607    };
608
609    private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
610        @Override
611        public void onChange(boolean selfChange, Uri uri) {
612            scheduleUpdate(CHANGE_SETTINGS);
613        }
614    };
615
616    private final MediaRouter.Callback mRouterCallback = new MediaRouter.SimpleCallback() {
617        @Override
618        public void onRouteAdded(MediaRouter router, RouteInfo info) {
619            scheduleUpdate(CHANGE_ROUTES);
620        }
621
622        @Override
623        public void onRouteChanged(MediaRouter router, RouteInfo info) {
624            scheduleUpdate(CHANGE_ROUTES);
625        }
626
627        @Override
628        public void onRouteRemoved(MediaRouter router, RouteInfo info) {
629            scheduleUpdate(CHANGE_ROUTES);
630        }
631
632        @Override
633        public void onRouteSelected(MediaRouter router, int type, RouteInfo info) {
634            scheduleUpdate(CHANGE_ROUTES);
635        }
636
637        @Override
638        public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) {
639            scheduleUpdate(CHANGE_ROUTES);
640        }
641    };
642
643    private class RoutePreference extends Preference
644            implements Preference.OnPreferenceClickListener {
645        private final MediaRouter.RouteInfo mRoute;
646
647        public RoutePreference(Context context, MediaRouter.RouteInfo route) {
648            super(context);
649
650            mRoute = route;
651            setTitle(route.getName());
652            setSummary(route.getDescription());
653            setEnabled(route.isEnabled());
654            if (route.isSelected()) {
655                setOrder(ORDER_CONNECTED);
656                if (route.isConnecting()) {
657                    setSummary(R.string.wifi_display_status_connecting);
658                } else {
659                    setSummary(R.string.wifi_display_status_connected);
660                }
661            } else {
662                if (isEnabled()) {
663                    setOrder(ORDER_AVAILABLE);
664                } else {
665                    setOrder(ORDER_UNAVAILABLE);
666                    if (route.getStatusCode() == MediaRouter.RouteInfo.STATUS_IN_USE) {
667                        setSummary(R.string.wifi_display_status_in_use);
668                    } else {
669                        setSummary(R.string.wifi_display_status_not_available);
670                    }
671                }
672            }
673            setOnPreferenceClickListener(this);
674        }
675
676        @Override
677        public boolean onPreferenceClick(Preference preference) {
678            toggleRoute(mRoute);
679            return true;
680        }
681    }
682
683    private class WifiDisplayRoutePreference extends RoutePreference
684            implements View.OnClickListener {
685        private final WifiDisplay mDisplay;
686
687        public WifiDisplayRoutePreference(Context context, MediaRouter.RouteInfo route,
688                WifiDisplay display) {
689            super(context, route);
690
691            mDisplay = display;
692            setWidgetLayoutResource(R.layout.wifi_display_preference);
693        }
694
695        @Override
696        protected void onBindView(View view) {
697            super.onBindView(view);
698
699            ImageView deviceDetails = (ImageView) view.findViewById(R.id.deviceDetails);
700            if (deviceDetails != null) {
701                deviceDetails.setOnClickListener(this);
702                if (!isEnabled()) {
703                    TypedValue value = new TypedValue();
704                    getContext().getTheme().resolveAttribute(android.R.attr.disabledAlpha,
705                            value, true);
706                    deviceDetails.setImageAlpha((int)(value.getFloat() * 255));
707                    deviceDetails.setEnabled(true); // always allow button to be pressed
708                }
709            }
710        }
711
712        @Override
713        public void onClick(View v) {
714            showWifiDisplayOptionsDialog(mDisplay);
715        }
716    }
717
718    private class UnpairedWifiDisplayPreference extends Preference
719            implements Preference.OnPreferenceClickListener {
720        private final WifiDisplay mDisplay;
721
722        public UnpairedWifiDisplayPreference(Context context, WifiDisplay display) {
723            super(context);
724
725            mDisplay = display;
726            setTitle(display.getFriendlyDisplayName());
727            setSummary(com.android.internal.R.string.wireless_display_route_description);
728            setEnabled(display.canConnect());
729            if (isEnabled()) {
730                setOrder(ORDER_AVAILABLE);
731            } else {
732                setOrder(ORDER_UNAVAILABLE);
733                setSummary(R.string.wifi_display_status_in_use);
734            }
735            setOnPreferenceClickListener(this);
736        }
737
738        @Override
739        public boolean onPreferenceClick(Preference preference) {
740            pairWifiDisplay(mDisplay);
741            return true;
742        }
743    }
744}
745