WifiSettings.java revision b8dfbf140986a9c0781f268ea40914063f026436 
1/*
2 * Copyright (C) 2010 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.wifi;
18
19import static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID;
20import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
21
22import android.preference.PreferenceActivity;
23import com.android.settings.R;
24import com.android.settings.RestrictedSettingsFragment;
25import com.android.settings.SettingsActivity;
26import com.android.settings.indexer.Indexable;
27import com.android.settings.indexer.IndexableData;
28import com.android.settings.indexer.IndexableRef;
29import com.android.settings.wifi.p2p.WifiP2pSettings;
30
31import android.app.ActionBar;
32import android.app.Activity;
33import android.app.AlertDialog;
34import android.app.Dialog;
35import android.content.BroadcastReceiver;
36import android.content.Context;
37import android.content.DialogInterface;
38import android.content.Intent;
39import android.content.IntentFilter;
40import android.content.pm.PackageManager;
41import android.content.res.Resources;
42import android.content.res.TypedArray;
43import android.location.LocationManager;
44import android.net.ConnectivityManager;
45import android.net.NetworkInfo;
46import android.net.NetworkInfo.DetailedState;
47import android.net.wifi.ScanResult;
48import android.net.wifi.SupplicantState;
49import android.net.wifi.WifiConfiguration;
50import android.net.wifi.WifiInfo;
51import android.net.wifi.WifiManager;
52import android.net.wifi.WpsInfo;
53import android.os.Bundle;
54import android.os.Handler;
55import android.os.Message;
56import android.preference.Preference;
57import android.preference.PreferenceScreen;
58import android.util.AttributeSet;
59import android.util.Log;
60import android.view.ContextMenu;
61import android.view.ContextMenu.ContextMenuInfo;
62import android.view.Gravity;
63import android.view.LayoutInflater;
64import android.view.Menu;
65import android.view.MenuInflater;
66import android.view.MenuItem;
67import android.view.View;
68import android.view.View.OnClickListener;
69import android.view.ViewGroup;
70import android.widget.AdapterView.AdapterContextMenuInfo;
71import android.widget.Button;
72import android.widget.ImageButton;
73import android.widget.PopupMenu;
74import android.widget.PopupMenu.OnMenuItemClickListener;
75import android.widget.RelativeLayout;
76import android.widget.Switch;
77import android.widget.TextView;
78import android.widget.Toast;
79
80import java.util.ArrayList;
81import java.util.Collection;
82import java.util.Collections;
83import java.util.HashMap;
84import java.util.List;
85import java.util.concurrent.atomic.AtomicBoolean;
86
87/**
88 * Two types of UI are provided here.
89 *
90 * The first is for "usual Settings", appearing as any other Setup fragment.
91 *
92 * The second is for Setup Wizard, with a simplified interface that hides the action bar
93 * and menus.
94 */
95public class WifiSettings extends RestrictedSettingsFragment
96        implements DialogInterface.OnClickListener, Indexable  {
97    private static final String TAG = "WifiSettings";
98    private static final int MENU_ID_WPS_PBC = Menu.FIRST;
99    private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1;
100    private static final int MENU_ID_P2P = Menu.FIRST + 2;
101    private static final int MENU_ID_ADD_NETWORK = Menu.FIRST + 3;
102    private static final int MENU_ID_ADVANCED = Menu.FIRST + 4;
103    private static final int MENU_ID_SCAN = Menu.FIRST + 5;
104    private static final int MENU_ID_CONNECT = Menu.FIRST + 6;
105    private static final int MENU_ID_FORGET = Menu.FIRST + 7;
106    private static final int MENU_ID_MODIFY = Menu.FIRST + 8;
107
108    private static final int WIFI_DIALOG_ID = 1;
109    private static final int WPS_PBC_DIALOG_ID = 2;
110    private static final int WPS_PIN_DIALOG_ID = 3;
111    private static final int WIFI_SKIPPED_DIALOG_ID = 4;
112    private static final int WIFI_AND_MOBILE_SKIPPED_DIALOG_ID = 5;
113
114    // Combo scans can take 5-6s to complete - set to 10s.
115    private static final int WIFI_RESCAN_INTERVAL_MS = 10 * 1000;
116
117    // Instance state keys
118    private static final String SAVE_DIALOG_EDIT_MODE = "edit_mode";
119    private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state";
120
121    // Activity result when pressing the Skip button
122    private static final int RESULT_SKIP = Activity.RESULT_FIRST_USER;
123
124    private final IntentFilter mFilter;
125    private final BroadcastReceiver mReceiver;
126    private final Scanner mScanner;
127
128    private WifiManager mWifiManager;
129    private WifiManager.ActionListener mConnectListener;
130    private WifiManager.ActionListener mSaveListener;
131    private WifiManager.ActionListener mForgetListener;
132    private boolean mP2pSupported;
133
134    private WifiEnabler mWifiEnabler;
135    // An access point being editted is stored here.
136    private AccessPoint mSelectedAccessPoint;
137
138    private DetailedState mLastState;
139    private WifiInfo mLastInfo;
140
141    private final AtomicBoolean mConnected = new AtomicBoolean(false);
142
143    private WifiDialog mDialog;
144
145    private TextView mEmptyView;
146
147    /* Used in Wifi Setup context */
148
149    // this boolean extra specifies whether to disable the Next button when not connected
150    private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect";
151
152    // this boolean extra specifies whether to auto finish when connection is established
153    private static final String EXTRA_AUTO_FINISH_ON_CONNECT = "wifi_auto_finish_on_connect";
154
155    // this boolean extra shows a custom button that we can control
156    protected static final String EXTRA_SHOW_CUSTOM_BUTTON = "wifi_show_custom_button";
157
158    // show a text regarding data charges when wifi connection is required during setup wizard
159    protected static final String EXTRA_SHOW_WIFI_REQUIRED_INFO = "wifi_show_wifi_required_info";
160
161    // this boolean extra is set if we are being invoked by the Setup Wizard
162    private static final String EXTRA_IS_FIRST_RUN = "firstRun";
163
164    // should Next button only be enabled when we have a connection?
165    private boolean mEnableNextOnConnection;
166
167    // should activity finish once we have a connection?
168    private boolean mAutoFinishOnConnection;
169
170    // Save the dialog details
171    private boolean mDlgEdit;
172    private AccessPoint mDlgAccessPoint;
173    private Bundle mAccessPointSavedState;
174
175    // the action bar uses a different set of controls for Setup Wizard
176    private boolean mSetupWizardMode;
177
178    private Switch mSwitch;
179
180    /* End of "used in Wifi Setup context" */
181
182    public WifiSettings() {
183        super(DISALLOW_CONFIG_WIFI);
184        mFilter = new IntentFilter();
185        mFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
186        mFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
187        mFilter.addAction(WifiManager.NETWORK_IDS_CHANGED_ACTION);
188        mFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
189        mFilter.addAction(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION);
190        mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION);
191        mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
192        mFilter.addAction(WifiManager.RSSI_CHANGED_ACTION);
193
194        mReceiver = new BroadcastReceiver() {
195            @Override
196            public void onReceive(Context context, Intent intent) {
197                handleEvent(context, intent);
198            }
199        };
200
201        mScanner = new Scanner();
202    }
203
204    @Override
205    public void onCreate(Bundle icicle) {
206        // Set this flag early, as it's needed by getHelpResource(), which is called by super
207        mSetupWizardMode = getActivity().getIntent().getBooleanExtra(EXTRA_IS_FIRST_RUN, false);
208
209        super.onCreate(icicle);
210    }
211
212    @Override
213    public View onCreateView(final LayoutInflater inflater, ViewGroup container,
214            Bundle savedInstanceState) {
215        if (mSetupWizardMode) {
216            View view = inflater.inflate(R.layout.setup_preference, container, false);
217            View other = view.findViewById(R.id.other_network);
218            other.setOnClickListener(new OnClickListener() {
219                @Override
220                public void onClick(View v) {
221                    if (mWifiManager.isWifiEnabled()) {
222                        onAddNetworkPressed();
223                    }
224                }
225            });
226            final ImageButton b = (ImageButton) view.findViewById(R.id.more);
227            if (b != null) {
228                b.setOnClickListener(new OnClickListener() {
229                    @Override
230                    public void onClick(View v) {
231                        if (mWifiManager.isWifiEnabled()) {
232                            PopupMenu pm = new PopupMenu(inflater.getContext(), b);
233                            pm.inflate(R.menu.wifi_setup);
234                            pm.setOnMenuItemClickListener(new OnMenuItemClickListener() {
235                                @Override
236                                public boolean onMenuItemClick(MenuItem item) {
237                                    if (R.id.wifi_wps == item.getItemId()) {
238                                        showDialog(WPS_PBC_DIALOG_ID);
239                                        return true;
240                                    }
241                                    return false;
242                                }
243                            });
244                            pm.show();
245                        }
246                    }
247                });
248            }
249
250            Intent intent = getActivity().getIntent();
251            if (intent.getBooleanExtra(EXTRA_SHOW_CUSTOM_BUTTON, false)) {
252                view.findViewById(R.id.button_bar).setVisibility(View.VISIBLE);
253                view.findViewById(R.id.back_button).setVisibility(View.INVISIBLE);
254                view.findViewById(R.id.skip_button).setVisibility(View.INVISIBLE);
255                view.findViewById(R.id.next_button).setVisibility(View.INVISIBLE);
256
257                Button customButton = (Button) view.findViewById(R.id.custom_button);
258                customButton.setVisibility(View.VISIBLE);
259                customButton.setOnClickListener(new OnClickListener() {
260                    @Override
261                    public void onClick(View v) {
262                        boolean isConnected = false;
263                        Activity activity = getActivity();
264                        final ConnectivityManager connectivity = (ConnectivityManager)
265                                activity.getSystemService(Context.CONNECTIVITY_SERVICE);
266                        if (connectivity != null) {
267                            final NetworkInfo info = connectivity.getActiveNetworkInfo();
268                            isConnected = (info != null) && info.isConnected();
269                        }
270                        if (isConnected) {
271                            // Warn of possible data charges
272                            showDialog(WIFI_SKIPPED_DIALOG_ID);
273                        } else {
274                            // Warn of lack of updates
275                            showDialog(WIFI_AND_MOBILE_SKIPPED_DIALOG_ID);
276                        }
277                    }
278                });
279            }
280
281            if (intent.getBooleanExtra(EXTRA_SHOW_WIFI_REQUIRED_INFO, false)) {
282                view.findViewById(R.id.wifi_required_info).setVisibility(View.VISIBLE);
283            }
284
285            return view;
286        } else {
287            return super.onCreateView(inflater, container, savedInstanceState);
288        }
289    }
290
291    @Override
292    public void onActivityCreated(Bundle savedInstanceState) {
293        super.onActivityCreated(savedInstanceState);
294
295        mP2pSupported = getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI_DIRECT);
296        mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
297
298        mConnectListener = new WifiManager.ActionListener() {
299                                   @Override
300                                   public void onSuccess() {
301                                   }
302                                   @Override
303                                   public void onFailure(int reason) {
304                                       Activity activity = getActivity();
305                                       if (activity != null) {
306                                           Toast.makeText(activity,
307                                                R.string.wifi_failed_connect_message,
308                                                Toast.LENGTH_SHORT).show();
309                                       }
310                                   }
311                               };
312
313        mSaveListener = new WifiManager.ActionListener() {
314                                @Override
315                                public void onSuccess() {
316                                }
317                                @Override
318                                public void onFailure(int reason) {
319                                    Activity activity = getActivity();
320                                    if (activity != null) {
321                                        Toast.makeText(activity,
322                                            R.string.wifi_failed_save_message,
323                                            Toast.LENGTH_SHORT).show();
324                                    }
325                                }
326                            };
327
328        mForgetListener = new WifiManager.ActionListener() {
329                                   @Override
330                                   public void onSuccess() {
331                                   }
332                                   @Override
333                                   public void onFailure(int reason) {
334                                       Activity activity = getActivity();
335                                       if (activity != null) {
336                                           Toast.makeText(activity,
337                                               R.string.wifi_failed_forget_message,
338                                               Toast.LENGTH_SHORT).show();
339                                       }
340                                   }
341                               };
342
343        if (savedInstanceState != null
344                && savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) {
345            mDlgEdit = savedInstanceState.getBoolean(SAVE_DIALOG_EDIT_MODE);
346            mAccessPointSavedState = savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE);
347        }
348
349        final Activity activity = getActivity();
350        final Intent intent = activity.getIntent();
351
352        // first if we're supposed to finish once we have a connection
353        mAutoFinishOnConnection = intent.getBooleanExtra(EXTRA_AUTO_FINISH_ON_CONNECT, false);
354
355        if (mAutoFinishOnConnection) {
356            // Hide the next button
357            if (hasNextButton()) {
358                getNextButton().setVisibility(View.GONE);
359            }
360
361            final ConnectivityManager connectivity = (ConnectivityManager)
362                    activity.getSystemService(Context.CONNECTIVITY_SERVICE);
363            if (connectivity != null
364                    && connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected()) {
365                activity.setResult(Activity.RESULT_OK);
366                activity.finish();
367                return;
368            }
369        }
370
371        // if we're supposed to enable/disable the Next button based on our current connection
372        // state, start it off in the right state
373        mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false);
374
375        if (mEnableNextOnConnection) {
376            if (hasNextButton()) {
377                final ConnectivityManager connectivity = (ConnectivityManager)
378                        activity.getSystemService(Context.CONNECTIVITY_SERVICE);
379                if (connectivity != null) {
380                    NetworkInfo info = connectivity.getNetworkInfo(
381                            ConnectivityManager.TYPE_WIFI);
382                    changeNextButtonState(info.isConnected());
383                }
384            }
385        }
386
387        addPreferencesFromResource(R.xml.wifi_settings);
388
389        if (mSetupWizardMode) {
390            getView().setSystemUiVisibility(
391                    View.STATUS_BAR_DISABLE_HOME |
392                    View.STATUS_BAR_DISABLE_RECENT |
393                    View.STATUS_BAR_DISABLE_NOTIFICATION_ALERTS |
394                    View.STATUS_BAR_DISABLE_CLOCK);
395        }
396
397        mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
398        getListView().setEmptyView(mEmptyView);
399
400        if (!mSetupWizardMode) {
401            registerForContextMenu(getListView());
402        }
403        setHasOptionsMenu(true);
404    }
405
406    @Override
407    public void onStart() {
408        super.onStart();
409
410        // On/off switch is hidden for Setup Wizard
411        if (!mSetupWizardMode) {
412            final Activity activity = getActivity();
413
414            mSwitch = new Switch(activity);
415
416            if (activity instanceof SettingsActivity) {
417                SettingsActivity sa = (SettingsActivity) activity;
418                if (!sa.onIsHidingHeaders()) {
419                    final int padding = activity.getResources().getDimensionPixelSize(
420                            R.dimen.action_bar_switch_padding);
421                    mSwitch.setPaddingRelative(0, 0, padding, 0);
422                    activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
423                            ActionBar.DISPLAY_SHOW_CUSTOM);
424                    activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
425                            ActionBar.LayoutParams.WRAP_CONTENT,
426                            ActionBar.LayoutParams.WRAP_CONTENT,
427                            Gravity.CENTER_VERTICAL | Gravity.END));
428                }
429            }
430
431            mWifiEnabler = new WifiEnabler(activity, mSwitch);
432        }
433    }
434
435    @Override
436    public void onStop() {
437        super.onStop();
438        Activity activity = getActivity();
439        boolean onIsHidingHeaders = true;
440        if (activity instanceof SettingsActivity){
441            SettingsActivity sa = (SettingsActivity) activity;
442            onIsHidingHeaders = sa.onIsHidingHeaders();
443        } else if (activity instanceof PreferenceActivity) {
444            PreferenceActivity pa = (PreferenceActivity) activity;
445            onIsHidingHeaders = pa.onIsHidingHeaders();
446        }
447        if (!onIsHidingHeaders) {
448            activity.getActionBar().setDisplayOptions(0, ActionBar.DISPLAY_SHOW_CUSTOM);
449            activity.getActionBar().setCustomView(null);
450        }
451    }
452
453    @Override
454    public void onResume() {
455        super.onResume();
456        if (mWifiEnabler != null) {
457            mWifiEnabler.resume();
458        }
459
460        getActivity().registerReceiver(mReceiver, mFilter);
461        updateAccessPoints();
462    }
463
464    @Override
465    public void onPause() {
466        super.onPause();
467        if (mWifiEnabler != null) {
468            mWifiEnabler.pause();
469        }
470        getActivity().unregisterReceiver(mReceiver);
471        mScanner.pause();
472    }
473
474    @Override
475    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
476        // If the user is not allowed to configure wifi, do not show the menu.
477        if (isRestrictedAndNotPinProtected()) return;
478
479        final boolean wifiIsEnabled = mWifiManager.isWifiEnabled();
480        TypedArray ta = getActivity().getTheme().obtainStyledAttributes(
481                new int[] {R.attr.ic_menu_add, R.attr.ic_wps});
482        if (mSetupWizardMode) {
483            menu.add(Menu.NONE, MENU_ID_WPS_PBC, 0, R.string.wifi_menu_wps_pbc)
484                    .setIcon(ta.getDrawable(1))
485                    .setEnabled(wifiIsEnabled)
486                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
487            menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network)
488                    .setEnabled(wifiIsEnabled)
489                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
490        } else {
491            menu.add(Menu.NONE, MENU_ID_WPS_PBC, 0, R.string.wifi_menu_wps_pbc)
492                    .setIcon(ta.getDrawable(1))
493                    .setEnabled(wifiIsEnabled)
494                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
495            menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network)
496                    .setIcon(ta.getDrawable(0))
497                    .setEnabled(wifiIsEnabled)
498                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
499            menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.wifi_menu_scan)
500                    //.setIcon(R.drawable.ic_menu_scan_network)
501                    .setEnabled(wifiIsEnabled)
502                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
503            menu.add(Menu.NONE, MENU_ID_WPS_PIN, 0, R.string.wifi_menu_wps_pin)
504                    .setEnabled(wifiIsEnabled)
505                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
506            if (mP2pSupported) {
507                menu.add(Menu.NONE, MENU_ID_P2P, 0, R.string.wifi_menu_p2p)
508                        .setEnabled(wifiIsEnabled)
509                        .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
510            }
511            menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced)
512                    //.setIcon(android.R.drawable.ic_menu_manage)
513                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
514        }
515        ta.recycle();
516        super.onCreateOptionsMenu(menu, inflater);
517    }
518
519    @Override
520    public void onSaveInstanceState(Bundle outState) {
521        super.onSaveInstanceState(outState);
522
523        // If the dialog is showing, save its state.
524        if (mDialog != null && mDialog.isShowing()) {
525            outState.putBoolean(SAVE_DIALOG_EDIT_MODE, mDlgEdit);
526            if (mDlgAccessPoint != null) {
527                mAccessPointSavedState = new Bundle();
528                mDlgAccessPoint.saveWifiState(mAccessPointSavedState);
529                outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState);
530            }
531        }
532    }
533
534    @Override
535    public boolean onOptionsItemSelected(MenuItem item) {
536        // If the user is not allowed to configure wifi, do not handle menu selections.
537        if (isRestrictedAndNotPinProtected()) return false;
538
539        switch (item.getItemId()) {
540            case MENU_ID_WPS_PBC:
541                showDialog(WPS_PBC_DIALOG_ID);
542                return true;
543            case MENU_ID_P2P:
544                if (getActivity() instanceof SettingsActivity) {
545                    ((SettingsActivity) getActivity()).startPreferencePanel(
546                            WifiP2pSettings.class.getCanonicalName(),
547                            null,
548                            R.string.wifi_p2p_settings_title, null,
549                            this, 0);
550                } else {
551                    startFragment(this, WifiP2pSettings.class.getCanonicalName(), -1, null);
552                }
553                return true;
554            case MENU_ID_WPS_PIN:
555                showDialog(WPS_PIN_DIALOG_ID);
556                return true;
557            case MENU_ID_SCAN:
558                if (mWifiManager.isWifiEnabled()) {
559                    mScanner.forceScan();
560                }
561                return true;
562            case MENU_ID_ADD_NETWORK:
563                if (mWifiManager.isWifiEnabled()) {
564                    onAddNetworkPressed();
565                }
566                return true;
567            case MENU_ID_ADVANCED:
568                if (getActivity() instanceof SettingsActivity) {
569                    ((SettingsActivity) getActivity()).startPreferencePanel(
570                            AdvancedWifiSettings.class.getCanonicalName(),
571                            null,
572                            R.string.wifi_advanced_titlebar, null,
573                            this, 0);
574                } else {
575                    startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), -1, null);
576                }
577                return true;
578        }
579        return super.onOptionsItemSelected(item);
580    }
581
582    @Override
583    public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) {
584        if (info instanceof AdapterContextMenuInfo) {
585            Preference preference = (Preference) getListView().getItemAtPosition(
586                    ((AdapterContextMenuInfo) info).position);
587
588            if (preference instanceof AccessPoint) {
589                mSelectedAccessPoint = (AccessPoint) preference;
590                menu.setHeaderTitle(mSelectedAccessPoint.ssid);
591                if (mSelectedAccessPoint.getLevel() != -1
592                        && mSelectedAccessPoint.getState() == null) {
593                    menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect);
594                }
595                if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
596                    menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget);
597                    menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify);
598                }
599            }
600        }
601    }
602
603    @Override
604    public boolean onContextItemSelected(MenuItem item) {
605        if (mSelectedAccessPoint == null) {
606            return super.onContextItemSelected(item);
607        }
608        switch (item.getItemId()) {
609            case MENU_ID_CONNECT: {
610                if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
611                    mWifiManager.connect(mSelectedAccessPoint.networkId,
612                            mConnectListener);
613                } else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) {
614                    /** Bypass dialog for unsecured networks */
615                    mSelectedAccessPoint.generateOpenNetworkConfig();
616                    mWifiManager.connect(mSelectedAccessPoint.getConfig(),
617                            mConnectListener);
618                } else {
619                    showDialog(mSelectedAccessPoint, true);
620                }
621                return true;
622            }
623            case MENU_ID_FORGET: {
624                mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener);
625                return true;
626            }
627            case MENU_ID_MODIFY: {
628                showDialog(mSelectedAccessPoint, true);
629                return true;
630            }
631        }
632        return super.onContextItemSelected(item);
633    }
634
635    @Override
636    public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
637        if (preference instanceof AccessPoint) {
638            mSelectedAccessPoint = (AccessPoint) preference;
639            /** Bypass dialog for unsecured, unsaved networks */
640            if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE &&
641                    mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) {
642                mSelectedAccessPoint.generateOpenNetworkConfig();
643                mWifiManager.connect(mSelectedAccessPoint.getConfig(), mConnectListener);
644            } else {
645                showDialog(mSelectedAccessPoint, false);
646            }
647        } else {
648            return super.onPreferenceTreeClick(screen, preference);
649        }
650        return true;
651    }
652
653    private void showDialog(AccessPoint accessPoint, boolean edit) {
654        if (mDialog != null) {
655            removeDialog(WIFI_DIALOG_ID);
656            mDialog = null;
657        }
658
659        // Save the access point and edit mode
660        mDlgAccessPoint = accessPoint;
661        mDlgEdit = edit;
662
663        showDialog(WIFI_DIALOG_ID);
664    }
665
666    @Override
667    public Dialog onCreateDialog(int dialogId) {
668        switch (dialogId) {
669            case WIFI_DIALOG_ID:
670                AccessPoint ap = mDlgAccessPoint; // For manual launch
671                if (ap == null) { // For re-launch from saved state
672                    if (mAccessPointSavedState != null) {
673                        ap = new AccessPoint(getActivity(), mAccessPointSavedState);
674                        // For repeated orientation changes
675                        mDlgAccessPoint = ap;
676                        // Reset the saved access point data
677                        mAccessPointSavedState = null;
678                    }
679                }
680                // If it's still null, fine, it's for Add Network
681                mSelectedAccessPoint = ap;
682                mDialog = new WifiDialog(getActivity(), this, ap, mDlgEdit);
683                return mDialog;
684            case WPS_PBC_DIALOG_ID:
685                return new WpsDialog(getActivity(), WpsInfo.PBC);
686            case WPS_PIN_DIALOG_ID:
687                return new WpsDialog(getActivity(), WpsInfo.DISPLAY);
688            case WIFI_SKIPPED_DIALOG_ID:
689                return new AlertDialog.Builder(getActivity())
690                            .setMessage(R.string.wifi_skipped_message)
691                            .setCancelable(false)
692                            .setNegativeButton(R.string.wifi_skip_anyway,
693                                    new DialogInterface.OnClickListener() {
694                                @Override
695                                public void onClick(DialogInterface dialog, int id) {
696                                    getActivity().setResult(RESULT_SKIP);
697                                    getActivity().finish();
698                                }
699                            })
700                            .setPositiveButton(R.string.wifi_dont_skip,
701                                    new DialogInterface.OnClickListener() {
702                                @Override
703                                public void onClick(DialogInterface dialog, int id) {
704                                }
705                            })
706                            .create();
707            case WIFI_AND_MOBILE_SKIPPED_DIALOG_ID:
708                return new AlertDialog.Builder(getActivity())
709                            .setMessage(R.string.wifi_and_mobile_skipped_message)
710                            .setCancelable(false)
711                            .setNegativeButton(R.string.wifi_skip_anyway,
712                                    new DialogInterface.OnClickListener() {
713                                @Override
714                                public void onClick(DialogInterface dialog, int id) {
715                                    getActivity().setResult(RESULT_SKIP);
716                                    getActivity().finish();
717                                }
718                            })
719                            .setPositiveButton(R.string.wifi_dont_skip,
720                                    new DialogInterface.OnClickListener() {
721                                @Override
722                                public void onClick(DialogInterface dialog, int id) {
723                                }
724                            })
725                            .create();
726
727        }
728        return super.onCreateDialog(dialogId);
729    }
730
731    /**
732     * Shows the latest access points available with supplimental information like
733     * the strength of network and the security for it.
734     */
735    private void updateAccessPoints() {
736        // Safeguard from some delayed event handling
737        if (getActivity() == null) return;
738
739        if (isRestrictedAndNotPinProtected()) {
740            addMessagePreference(R.string.wifi_empty_list_user_restricted);
741            return;
742        }
743        final int wifiState = mWifiManager.getWifiState();
744
745        switch (wifiState) {
746            case WifiManager.WIFI_STATE_ENABLED:
747                // AccessPoints are automatically sorted with TreeSet.
748                final Collection<AccessPoint> accessPoints =
749                        constructAccessPoints(getActivity(), mWifiManager, mLastInfo, mLastState);
750                getPreferenceScreen().removeAll();
751                if(accessPoints.size() == 0) {
752                    addMessagePreference(R.string.wifi_empty_list_wifi_on);
753                }
754                for (AccessPoint accessPoint : accessPoints) {
755                    getPreferenceScreen().addPreference(accessPoint);
756                }
757                break;
758
759            case WifiManager.WIFI_STATE_ENABLING:
760                getPreferenceScreen().removeAll();
761                break;
762
763            case WifiManager.WIFI_STATE_DISABLING:
764                addMessagePreference(R.string.wifi_stopping);
765                break;
766
767            case WifiManager.WIFI_STATE_DISABLED:
768                setOffMessage();
769                break;
770        }
771    }
772
773    private void setOffMessage() {
774        if (mEmptyView != null) {
775            mEmptyView.setText(R.string.wifi_empty_list_wifi_off);
776            if (android.provider.Settings.Global.getInt(getActivity().getContentResolver(),
777                    android.provider.Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1) {
778                mEmptyView.append("\n\n");
779                int resId;
780                if (android.provider.Settings.Secure.isLocationProviderEnabled(
781                        getActivity().getContentResolver(), LocationManager.NETWORK_PROVIDER)) {
782                    resId = R.string.wifi_scan_notify_text_location_on;
783                } else {
784                    resId = R.string.wifi_scan_notify_text_location_off;
785                }
786                CharSequence charSeq = getText(resId);
787                mEmptyView.append(charSeq);
788            }
789        }
790        getPreferenceScreen().removeAll();
791    }
792
793    private void addMessagePreference(int messageId) {
794        if (mEmptyView != null) mEmptyView.setText(messageId);
795        getPreferenceScreen().removeAll();
796    }
797
798    /** Returns sorted list of access points */
799    private static List<AccessPoint> constructAccessPoints(Context context,
800            WifiManager wifiManager, WifiInfo lastInfo, DetailedState lastState) {
801        ArrayList<AccessPoint> accessPoints = new ArrayList<AccessPoint>();
802        /** Lookup table to more quickly update AccessPoints by only considering objects with the
803         * correct SSID.  Maps SSID -> List of AccessPoints with the given SSID.  */
804        Multimap<String, AccessPoint> apMap = new Multimap<String, AccessPoint>();
805
806        final List<WifiConfiguration> configs = wifiManager.getConfiguredNetworks();
807        if (configs != null) {
808            for (WifiConfiguration config : configs) {
809                AccessPoint accessPoint = new AccessPoint(context, config);
810                if (lastInfo != null && lastState != null) {
811                    accessPoint.update(lastInfo, lastState);
812                }
813                accessPoints.add(accessPoint);
814                apMap.put(accessPoint.ssid, accessPoint);
815            }
816        }
817
818        final List<ScanResult> results = wifiManager.getScanResults();
819        if (results != null) {
820            for (ScanResult result : results) {
821                // Ignore hidden and ad-hoc networks.
822                if (result.SSID == null || result.SSID.length() == 0 ||
823                        result.capabilities.contains("[IBSS]")) {
824                    continue;
825                }
826
827                boolean found = false;
828                for (AccessPoint accessPoint : apMap.getAll(result.SSID)) {
829                    if (accessPoint.update(result))
830                        found = true;
831                }
832                if (!found) {
833                    AccessPoint accessPoint = new AccessPoint(context, result);
834                    accessPoints.add(accessPoint);
835                    apMap.put(accessPoint.ssid, accessPoint);
836                }
837            }
838        }
839
840        // Pre-sort accessPoints to speed preference insertion
841        Collections.sort(accessPoints);
842        return accessPoints;
843    }
844
845    /** A restricted multimap for use in constructAccessPoints */
846    private static class Multimap<K,V> {
847        private final HashMap<K,List<V>> store = new HashMap<K,List<V>>();
848        /** retrieve a non-null list of values with key K */
849        List<V> getAll(K key) {
850            List<V> values = store.get(key);
851            return values != null ? values : Collections.<V>emptyList();
852        }
853
854        void put(K key, V val) {
855            List<V> curVals = store.get(key);
856            if (curVals == null) {
857                curVals = new ArrayList<V>(3);
858                store.put(key, curVals);
859            }
860            curVals.add(val);
861        }
862    }
863
864    private void handleEvent(Context context, Intent intent) {
865        String action = intent.getAction();
866        if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {
867            updateWifiState(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
868                    WifiManager.WIFI_STATE_UNKNOWN));
869        } else if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action) ||
870                WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION.equals(action) ||
871                WifiManager.LINK_CONFIGURATION_CHANGED_ACTION.equals(action)) {
872                updateAccessPoints();
873        } else if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)) {
874            //Ignore supplicant state changes when network is connected
875            //TODO: we should deprecate SUPPLICANT_STATE_CHANGED_ACTION and
876            //introduce a broadcast that combines the supplicant and network
877            //network state change events so the apps dont have to worry about
878            //ignoring supplicant state change when network is connected
879            //to get more fine grained information.
880            SupplicantState state = (SupplicantState) intent.getParcelableExtra(
881                    WifiManager.EXTRA_NEW_STATE);
882            if (!mConnected.get() && SupplicantState.isHandshakeState(state)) {
883                updateConnectionState(WifiInfo.getDetailedStateOf(state));
884             } else {
885                 // During a connect, we may have the supplicant
886                 // state change affect the detailed network state.
887                 // Make sure a lost connection is updated as well.
888                 updateConnectionState(null);
889             }
890        } else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) {
891            NetworkInfo info = (NetworkInfo) intent.getParcelableExtra(
892                    WifiManager.EXTRA_NETWORK_INFO);
893            mConnected.set(info.isConnected());
894            changeNextButtonState(info.isConnected());
895            updateAccessPoints();
896            updateConnectionState(info.getDetailedState());
897            if (mAutoFinishOnConnection && info.isConnected()) {
898                Activity activity = getActivity();
899                if (activity != null) {
900                    activity.setResult(Activity.RESULT_OK);
901                    activity.finish();
902                }
903                return;
904            }
905        } else if (WifiManager.RSSI_CHANGED_ACTION.equals(action)) {
906            updateConnectionState(null);
907        }
908    }
909
910    private void updateConnectionState(DetailedState state) {
911        /* sticky broadcasts can call this when wifi is disabled */
912        if (!mWifiManager.isWifiEnabled()) {
913            mScanner.pause();
914            return;
915        }
916
917        if (state == DetailedState.OBTAINING_IPADDR) {
918            mScanner.pause();
919        } else {
920            mScanner.resume();
921        }
922
923        mLastInfo = mWifiManager.getConnectionInfo();
924        if (state != null) {
925            mLastState = state;
926        }
927
928        for (int i = getPreferenceScreen().getPreferenceCount() - 1; i >= 0; --i) {
929            // Maybe there's a WifiConfigPreference
930            Preference preference = getPreferenceScreen().getPreference(i);
931            if (preference instanceof AccessPoint) {
932                final AccessPoint accessPoint = (AccessPoint) preference;
933                accessPoint.update(mLastInfo, mLastState);
934            }
935        }
936    }
937
938    private void updateWifiState(int state) {
939        Activity activity = getActivity();
940        if (activity != null) {
941            activity.invalidateOptionsMenu();
942        }
943
944        switch (state) {
945            case WifiManager.WIFI_STATE_ENABLED:
946                mScanner.resume();
947                return; // not break, to avoid the call to pause() below
948
949            case WifiManager.WIFI_STATE_ENABLING:
950                addMessagePreference(R.string.wifi_starting);
951                break;
952
953            case WifiManager.WIFI_STATE_DISABLED:
954                setOffMessage();
955                break;
956        }
957
958        mLastInfo = null;
959        mLastState = null;
960        mScanner.pause();
961    }
962
963    private class Scanner extends Handler {
964        private int mRetry = 0;
965
966        void resume() {
967            if (!hasMessages(0)) {
968                sendEmptyMessage(0);
969            }
970        }
971
972        void forceScan() {
973            removeMessages(0);
974            sendEmptyMessage(0);
975        }
976
977        void pause() {
978            mRetry = 0;
979            removeMessages(0);
980        }
981
982        @Override
983        public void handleMessage(Message message) {
984            if (mWifiManager.startScan()) {
985                mRetry = 0;
986            } else if (++mRetry >= 3) {
987                mRetry = 0;
988                Activity activity = getActivity();
989                if (activity != null) {
990                    Toast.makeText(activity, R.string.wifi_fail_to_scan,
991                            Toast.LENGTH_LONG).show();
992                }
993                return;
994            }
995            sendEmptyMessageDelayed(0, WIFI_RESCAN_INTERVAL_MS);
996        }
997    }
998
999    /**
1000     * Renames/replaces "Next" button when appropriate. "Next" button usually exists in
1001     * Wifi setup screens, not in usual wifi settings screen.
1002     *
1003     * @param connected true when the device is connected to a wifi network.
1004     */
1005    private void changeNextButtonState(boolean connected) {
1006        if (mEnableNextOnConnection && hasNextButton()) {
1007            getNextButton().setEnabled(connected);
1008        }
1009    }
1010
1011    @Override
1012    public void onClick(DialogInterface dialogInterface, int button) {
1013        if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) {
1014            forget();
1015        } else if (button == WifiDialog.BUTTON_SUBMIT) {
1016            if (mDialog != null) {
1017                submit(mDialog.getController());
1018            }
1019        }
1020    }
1021
1022    /* package */ void submit(WifiConfigController configController) {
1023
1024        final WifiConfiguration config = configController.getConfig();
1025
1026        if (config == null) {
1027            if (mSelectedAccessPoint != null
1028                    && mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
1029                mWifiManager.connect(mSelectedAccessPoint.networkId,
1030                        mConnectListener);
1031            }
1032        } else if (config.networkId != INVALID_NETWORK_ID) {
1033            if (mSelectedAccessPoint != null) {
1034                mWifiManager.save(config, mSaveListener);
1035            }
1036        } else {
1037            if (configController.isEdit()) {
1038                mWifiManager.save(config, mSaveListener);
1039            } else {
1040                mWifiManager.connect(config, mConnectListener);
1041            }
1042        }
1043
1044        if (mWifiManager.isWifiEnabled()) {
1045            mScanner.resume();
1046        }
1047        updateAccessPoints();
1048    }
1049
1050    /* package */ void forget() {
1051        if (mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) {
1052            // Should not happen, but a monkey seems to triger it
1053            Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
1054            return;
1055        }
1056
1057        mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener);
1058
1059        if (mWifiManager.isWifiEnabled()) {
1060            mScanner.resume();
1061        }
1062        updateAccessPoints();
1063
1064        // We need to rename/replace "Next" button in wifi setup context.
1065        changeNextButtonState(false);
1066    }
1067
1068    /**
1069     * Refreshes acccess points and ask Wifi module to scan networks again.
1070     */
1071    /* package */ void refreshAccessPoints() {
1072        if (mWifiManager.isWifiEnabled()) {
1073            mScanner.resume();
1074        }
1075
1076        getPreferenceScreen().removeAll();
1077    }
1078
1079    /**
1080     * Called when "add network" button is pressed.
1081     */
1082    /* package */ void onAddNetworkPressed() {
1083        // No exact access point is selected.
1084        mSelectedAccessPoint = null;
1085        showDialog(null, true);
1086    }
1087
1088    /* package */ int getAccessPointsCount() {
1089        final boolean wifiIsEnabled = mWifiManager.isWifiEnabled();
1090        if (wifiIsEnabled) {
1091            return getPreferenceScreen().getPreferenceCount();
1092        } else {
1093            return 0;
1094        }
1095    }
1096
1097    /**
1098     * Requests wifi module to pause wifi scan. May be ignored when the module is disabled.
1099     */
1100    /* package */ void pauseWifiScan() {
1101        if (mWifiManager.isWifiEnabled()) {
1102            mScanner.pause();
1103        }
1104    }
1105
1106    /**
1107     * Requests wifi module to resume wifi scan. May be ignored when the module is disabled.
1108     */
1109    /* package */ void resumeWifiScan() {
1110        if (mWifiManager.isWifiEnabled()) {
1111            mScanner.resume();
1112        }
1113    }
1114
1115    @Override
1116    protected int getHelpResource() {
1117        if (mSetupWizardMode) {
1118            return 0;
1119        }
1120        return R.string.help_url_wifi;
1121    }
1122
1123    /**
1124     * Used as the outer frame of all setup wizard pages that need to adjust their margins based
1125     * on the total size of the available display. (e.g. side margins set to 10% of total width.)
1126     */
1127    public static class ProportionalOuterFrame extends RelativeLayout {
1128        public ProportionalOuterFrame(Context context) {
1129            super(context);
1130        }
1131        public ProportionalOuterFrame(Context context, AttributeSet attrs) {
1132            super(context, attrs);
1133        }
1134        public ProportionalOuterFrame(Context context, AttributeSet attrs, int defStyle) {
1135            super(context, attrs, defStyle);
1136        }
1137
1138        /**
1139         * Set our margins and title area height proportionally to the available display size
1140         */
1141        @Override
1142        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
1143            int parentWidth = MeasureSpec.getSize(widthMeasureSpec);
1144            int parentHeight = MeasureSpec.getSize(heightMeasureSpec);
1145            final Resources resources = getContext().getResources();
1146            float titleHeight = resources.getFraction(R.dimen.setup_title_height, 1, 1);
1147            float sideMargin = resources.getFraction(R.dimen.setup_border_width, 1, 1);
1148            int bottom = resources.getDimensionPixelSize(R.dimen.setup_margin_bottom);
1149            setPaddingRelative(
1150                    (int) (parentWidth * sideMargin),
1151                    0,
1152                    (int) (parentWidth * sideMargin),
1153                    bottom);
1154            View title = findViewById(R.id.title_area);
1155            if (title != null) {
1156                title.setMinimumHeight((int) (parentHeight * titleHeight));
1157            }
1158            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
1159        }
1160    }
1161
1162    public static final Indexable.IndexDataProvider INDEX_DATA_PROVIDER =
1163        new Indexable.IndexDataProvider() {
1164            @Override
1165            public List<IndexableRef> getRefsToIndex(Context context) {
1166                return null;
1167            }
1168
1169            @Override
1170            public List<IndexableData> getRawDataToIndex(Context context) {
1171                final List<IndexableData> result = new ArrayList<IndexableData>();
1172
1173                // Add fragment title
1174                IndexableData data = new IndexableData();
1175                data.title = context.getResources().getString(R.string.wifi_settings);
1176                data.fragmentTitle = context.getResources().getString(R.string.wifi_settings);
1177                result.add(data);
1178
1179                // Add available Wi-Fi access points
1180                WifiManager wifiManager =
1181                        (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
1182                final Collection<AccessPoint> accessPoints =
1183                        constructAccessPoints(context, wifiManager, null, null);
1184                for (AccessPoint accessPoint : accessPoints) {
1185                    // We are indexing only the saved Wi-Fi networks.
1186                    if (accessPoint.getConfig() == null) continue;
1187                    data = new IndexableData();
1188                    data.title = accessPoint.getTitle().toString();
1189                    data.fragmentTitle = context.getResources().getString(R.string.wifi_settings);
1190                    result.add(data);
1191                }
1192
1193                return result;
1194            }
1195        };
1196}
1197