WifiDisplaySettings.java revision daef2e2b066a0bf204b9a63b7cae13e3d5441f4e 
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.ActionBar;
20import android.app.Activity;
21import android.app.AlertDialog;
22import android.app.Service;
23import android.content.BroadcastReceiver;
24import android.content.Context;
25import android.content.DialogInterface;
26import android.content.Intent;
27import android.content.IntentFilter;
28import android.database.ContentObserver;
29import android.hardware.display.DisplayManager;
30import android.hardware.display.WifiDisplay;
31import android.hardware.display.WifiDisplayStatus;
32import android.media.MediaRouter;
33import android.media.MediaRouter.RouteInfo;
34import android.net.Uri;
35import android.net.wifi.p2p.WifiP2pManager;
36import android.net.wifi.p2p.WifiP2pManager.ActionListener;
37import android.net.wifi.p2p.WifiP2pManager.Channel;
38import android.net.wifi.WpsInfo;
39import android.os.Bundle;
40import android.os.Handler;
41import android.os.Looper;
42import android.preference.ListPreference;
43import android.preference.Preference;
44import android.preference.PreferenceCategory;
45import android.preference.PreferenceGroup;
46import android.preference.PreferenceScreen;
47import android.preference.SwitchPreference;
48import android.provider.Settings;
49import android.util.Slog;
50import android.util.TypedValue;
51import android.view.LayoutInflater;
52import android.view.Menu;
53import android.view.MenuInflater;
54import android.view.MenuItem;
55import android.view.View;
56import android.view.View.OnClickListener;
57import android.view.ViewGroup;
58import android.widget.Button;
59import android.widget.EditText;
60import android.widget.ImageView;
61import android.widget.TextView;
62
63import com.android.internal.app.MediaRouteDialogPresenter;
64import com.android.settings.R;
65import 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 */
75public 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
115    public WifiDisplaySettings() {
116        mHandler = new Handler();
117    }
118
119    @Override
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
134    protected int getHelpResource() {
135        return R.string.help_url_remote_display;
136    }
137
138    @Override
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
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
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
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
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
210    private void scheduleUpdate(int changes) {
211        if (mStarted) {
212            if (mPendingChanges == 0) {
213                mHandler.post(mUpdateRunnable);
214            }
215            mPendingChanges |= changes;
216        }
217    }
218
219    private void unscheduleUpdate() {
220        if (mPendingChanges != 0) {
221            mPendingChanges = 0;
222            mHandler.removeCallbacks(mUpdateRunnable);
223        }
224    }
225
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
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
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
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
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
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
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
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
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
554    private void pairWifiDisplay(WifiDisplay display) {
555        if (display.canConnect()) {
556            mDisplayManager.connectWifiDisplay(display.getDeviceAddress());
557        }
558    }
559
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
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
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
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
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
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
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
741        public boolean onPreferenceClick(Preference preference) {
742            pairWifiDisplay(mDisplay);
743            return true;
744        }
745    }
746}
747