WifiSettings.java revision 86ea97f4524fe96abeffcba3386753741989cd71 
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 android.provider.SearchIndexableResource;
24import com.android.settings.R;
25import com.android.settings.RestrictedSettingsFragment;
26import com.android.settings.SettingsActivity;
27import com.android.settings.search.Indexable;
28import com.android.settings.search.SearchIndexableRaw;
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            boolean addSwitch = true;
416
417            if (activity instanceof WifiPickerActivity) {
418                PreferenceActivity pa = (PreferenceActivity) activity;
419                addSwitch = pa.onIsHidingHeaders();
420            }
421
422            if (addSwitch) {
423                final int padding = activity.getResources().getDimensionPixelSize(
424                        R.dimen.action_bar_switch_padding);
425                mSwitch.setPaddingRelative(0, 0, padding, 0);
426                activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
427                        ActionBar.DISPLAY_SHOW_CUSTOM);
428                activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
429                        ActionBar.LayoutParams.WRAP_CONTENT,
430                        ActionBar.LayoutParams.WRAP_CONTENT,
431                        Gravity.CENTER_VERTICAL | Gravity.END));
432            }
433
434            mWifiEnabler = new WifiEnabler(activity, mSwitch);
435        }
436    }
437
438    @Override
439    public void onStop() {
440        super.onStop();
441        Activity activity = getActivity();
442        boolean onIsHidingHeaders = true;
443        if (activity instanceof SettingsActivity){
444            SettingsActivity sa = (SettingsActivity) activity;
445            onIsHidingHeaders = sa.onIsHidingHeaders();
446        } else if (activity instanceof PreferenceActivity) {
447            PreferenceActivity pa = (PreferenceActivity) activity;
448            onIsHidingHeaders = pa.onIsHidingHeaders();
449        }
450        if (!onIsHidingHeaders) {
451            activity.getActionBar().setDisplayOptions(0, ActionBar.DISPLAY_SHOW_CUSTOM);
452            activity.getActionBar().setCustomView(null);
453        }
454    }
455
456    @Override
457    public void onResume() {
458        final Activity activity = getActivity();
459        super.onResume();
460        if (mWifiEnabler != null) {
461            mWifiEnabler.resume(activity);
462        }
463
464        activity.registerReceiver(mReceiver, mFilter);
465        updateAccessPoints();
466    }
467
468    @Override
469    public void onPause() {
470        super.onPause();
471        if (mWifiEnabler != null) {
472            mWifiEnabler.pause();
473        }
474        getActivity().unregisterReceiver(mReceiver);
475        mScanner.pause();
476    }
477
478    @Override
479    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
480        // If the user is not allowed to configure wifi, do not show the menu.
481        if (isRestrictedAndNotPinProtected()) return;
482
483        final boolean wifiIsEnabled = mWifiManager.isWifiEnabled();
484        TypedArray ta = getActivity().getTheme().obtainStyledAttributes(
485                new int[] {R.attr.ic_menu_add, R.attr.ic_wps});
486        if (mSetupWizardMode) {
487            menu.add(Menu.NONE, MENU_ID_WPS_PBC, 0, R.string.wifi_menu_wps_pbc)
488                    .setIcon(ta.getDrawable(1))
489                    .setEnabled(wifiIsEnabled)
490                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
491            menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network)
492                    .setEnabled(wifiIsEnabled)
493                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
494        } else {
495            menu.add(Menu.NONE, MENU_ID_WPS_PBC, 0, R.string.wifi_menu_wps_pbc)
496                    .setIcon(ta.getDrawable(1))
497                    .setEnabled(wifiIsEnabled)
498                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
499            menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network)
500                    .setIcon(ta.getDrawable(0))
501                    .setEnabled(wifiIsEnabled)
502                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
503            menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.wifi_menu_scan)
504                    //.setIcon(R.drawable.ic_menu_scan_network)
505                    .setEnabled(wifiIsEnabled)
506                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
507            menu.add(Menu.NONE, MENU_ID_WPS_PIN, 0, R.string.wifi_menu_wps_pin)
508                    .setEnabled(wifiIsEnabled)
509                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
510            if (mP2pSupported) {
511                menu.add(Menu.NONE, MENU_ID_P2P, 0, R.string.wifi_menu_p2p)
512                        .setEnabled(wifiIsEnabled)
513                        .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
514            }
515            menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced)
516                    //.setIcon(android.R.drawable.ic_menu_manage)
517                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
518        }
519        ta.recycle();
520        super.onCreateOptionsMenu(menu, inflater);
521    }
522
523    @Override
524    public void onSaveInstanceState(Bundle outState) {
525        super.onSaveInstanceState(outState);
526
527        // If the dialog is showing, save its state.
528        if (mDialog != null && mDialog.isShowing()) {
529            outState.putBoolean(SAVE_DIALOG_EDIT_MODE, mDlgEdit);
530            if (mDlgAccessPoint != null) {
531                mAccessPointSavedState = new Bundle();
532                mDlgAccessPoint.saveWifiState(mAccessPointSavedState);
533                outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState);
534            }
535        }
536    }
537
538    @Override
539    public boolean onOptionsItemSelected(MenuItem item) {
540        // If the user is not allowed to configure wifi, do not handle menu selections.
541        if (isRestrictedAndNotPinProtected()) return false;
542
543        switch (item.getItemId()) {
544            case MENU_ID_WPS_PBC:
545                showDialog(WPS_PBC_DIALOG_ID);
546                return true;
547            case MENU_ID_P2P:
548                if (getActivity() instanceof SettingsActivity) {
549                    ((SettingsActivity) getActivity()).startPreferencePanel(
550                            WifiP2pSettings.class.getCanonicalName(),
551                            null,
552                            R.string.wifi_p2p_settings_title, null,
553                            this, 0);
554                } else {
555                    startFragment(this, WifiP2pSettings.class.getCanonicalName(), -1, null);
556                }
557                return true;
558            case MENU_ID_WPS_PIN:
559                showDialog(WPS_PIN_DIALOG_ID);
560                return true;
561            case MENU_ID_SCAN:
562                if (mWifiManager.isWifiEnabled()) {
563                    mScanner.forceScan();
564                }
565                return true;
566            case MENU_ID_ADD_NETWORK:
567                if (mWifiManager.isWifiEnabled()) {
568                    onAddNetworkPressed();
569                }
570                return true;
571            case MENU_ID_ADVANCED:
572                if (getActivity() instanceof SettingsActivity) {
573                    ((SettingsActivity) getActivity()).startPreferencePanel(
574                            AdvancedWifiSettings.class.getCanonicalName(),
575                            null,
576                            R.string.wifi_advanced_titlebar, null,
577                            this, 0);
578                } else {
579                    startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), -1, null);
580                }
581                return true;
582        }
583        return super.onOptionsItemSelected(item);
584    }
585
586    @Override
587    public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) {
588        if (info instanceof AdapterContextMenuInfo) {
589            Preference preference = (Preference) getListView().getItemAtPosition(
590                    ((AdapterContextMenuInfo) info).position);
591
592            if (preference instanceof AccessPoint) {
593                mSelectedAccessPoint = (AccessPoint) preference;
594                menu.setHeaderTitle(mSelectedAccessPoint.ssid);
595                if (mSelectedAccessPoint.getLevel() != -1
596                        && mSelectedAccessPoint.getState() == null) {
597                    menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect);
598                }
599                if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
600                    menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget);
601                    menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify);
602                }
603            }
604        }
605    }
606
607    @Override
608    public boolean onContextItemSelected(MenuItem item) {
609        if (mSelectedAccessPoint == null) {
610            return super.onContextItemSelected(item);
611        }
612        switch (item.getItemId()) {
613            case MENU_ID_CONNECT: {
614                if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
615                    mWifiManager.connect(mSelectedAccessPoint.networkId,
616                            mConnectListener);
617                } else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) {
618                    /** Bypass dialog for unsecured networks */
619                    mSelectedAccessPoint.generateOpenNetworkConfig();
620                    mWifiManager.connect(mSelectedAccessPoint.getConfig(),
621                            mConnectListener);
622                } else {
623                    showDialog(mSelectedAccessPoint, true);
624                }
625                return true;
626            }
627            case MENU_ID_FORGET: {
628                mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener);
629                return true;
630            }
631            case MENU_ID_MODIFY: {
632                showDialog(mSelectedAccessPoint, true);
633                return true;
634            }
635        }
636        return super.onContextItemSelected(item);
637    }
638
639    @Override
640    public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
641        if (preference instanceof AccessPoint) {
642            mSelectedAccessPoint = (AccessPoint) preference;
643            /** Bypass dialog for unsecured, unsaved networks */
644            if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE &&
645                    mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) {
646                mSelectedAccessPoint.generateOpenNetworkConfig();
647                mWifiManager.connect(mSelectedAccessPoint.getConfig(), mConnectListener);
648            } else {
649                showDialog(mSelectedAccessPoint, false);
650            }
651        } else {
652            return super.onPreferenceTreeClick(screen, preference);
653        }
654        return true;
655    }
656
657    private void showDialog(AccessPoint accessPoint, boolean edit) {
658        if (mDialog != null) {
659            removeDialog(WIFI_DIALOG_ID);
660            mDialog = null;
661        }
662
663        // Save the access point and edit mode
664        mDlgAccessPoint = accessPoint;
665        mDlgEdit = edit;
666
667        showDialog(WIFI_DIALOG_ID);
668    }
669
670    @Override
671    public Dialog onCreateDialog(int dialogId) {
672        switch (dialogId) {
673            case WIFI_DIALOG_ID:
674                AccessPoint ap = mDlgAccessPoint; // For manual launch
675                if (ap == null) { // For re-launch from saved state
676                    if (mAccessPointSavedState != null) {
677                        ap = new AccessPoint(getActivity(), mAccessPointSavedState);
678                        // For repeated orientation changes
679                        mDlgAccessPoint = ap;
680                        // Reset the saved access point data
681                        mAccessPointSavedState = null;
682                    }
683                }
684                // If it's still null, fine, it's for Add Network
685                mSelectedAccessPoint = ap;
686                mDialog = new WifiDialog(getActivity(), this, ap, mDlgEdit);
687                return mDialog;
688            case WPS_PBC_DIALOG_ID:
689                return new WpsDialog(getActivity(), WpsInfo.PBC);
690            case WPS_PIN_DIALOG_ID:
691                return new WpsDialog(getActivity(), WpsInfo.DISPLAY);
692            case WIFI_SKIPPED_DIALOG_ID:
693                return new AlertDialog.Builder(getActivity())
694                            .setMessage(R.string.wifi_skipped_message)
695                            .setCancelable(false)
696                            .setNegativeButton(R.string.wifi_skip_anyway,
697                                    new DialogInterface.OnClickListener() {
698                                @Override
699                                public void onClick(DialogInterface dialog, int id) {
700                                    getActivity().setResult(RESULT_SKIP);
701                                    getActivity().finish();
702                                }
703                            })
704                            .setPositiveButton(R.string.wifi_dont_skip,
705                                    new DialogInterface.OnClickListener() {
706                                @Override
707                                public void onClick(DialogInterface dialog, int id) {
708                                }
709                            })
710                            .create();
711            case WIFI_AND_MOBILE_SKIPPED_DIALOG_ID:
712                return new AlertDialog.Builder(getActivity())
713                            .setMessage(R.string.wifi_and_mobile_skipped_message)
714                            .setCancelable(false)
715                            .setNegativeButton(R.string.wifi_skip_anyway,
716                                    new DialogInterface.OnClickListener() {
717                                @Override
718                                public void onClick(DialogInterface dialog, int id) {
719                                    getActivity().setResult(RESULT_SKIP);
720                                    getActivity().finish();
721                                }
722                            })
723                            .setPositiveButton(R.string.wifi_dont_skip,
724                                    new DialogInterface.OnClickListener() {
725                                @Override
726                                public void onClick(DialogInterface dialog, int id) {
727                                }
728                            })
729                            .create();
730
731        }
732        return super.onCreateDialog(dialogId);
733    }
734
735    /**
736     * Shows the latest access points available with supplimental information like
737     * the strength of network and the security for it.
738     */
739    private void updateAccessPoints() {
740        // Safeguard from some delayed event handling
741        if (getActivity() == null) return;
742
743        if (isRestrictedAndNotPinProtected()) {
744            addMessagePreference(R.string.wifi_empty_list_user_restricted);
745            return;
746        }
747        final int wifiState = mWifiManager.getWifiState();
748
749        switch (wifiState) {
750            case WifiManager.WIFI_STATE_ENABLED:
751                // AccessPoints are automatically sorted with TreeSet.
752                final Collection<AccessPoint> accessPoints =
753                        constructAccessPoints(getActivity(), mWifiManager, mLastInfo, mLastState);
754                getPreferenceScreen().removeAll();
755                if(accessPoints.size() == 0) {
756                    addMessagePreference(R.string.wifi_empty_list_wifi_on);
757                }
758                for (AccessPoint accessPoint : accessPoints) {
759                    getPreferenceScreen().addPreference(accessPoint);
760                }
761                break;
762
763            case WifiManager.WIFI_STATE_ENABLING:
764                getPreferenceScreen().removeAll();
765                break;
766
767            case WifiManager.WIFI_STATE_DISABLING:
768                addMessagePreference(R.string.wifi_stopping);
769                break;
770
771            case WifiManager.WIFI_STATE_DISABLED:
772                setOffMessage();
773                break;
774        }
775    }
776
777    private void setOffMessage() {
778        if (mEmptyView != null) {
779            mEmptyView.setText(R.string.wifi_empty_list_wifi_off);
780            if (android.provider.Settings.Global.getInt(getActivity().getContentResolver(),
781                    android.provider.Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1) {
782                mEmptyView.append("\n\n");
783                int resId;
784                if (android.provider.Settings.Secure.isLocationProviderEnabled(
785                        getActivity().getContentResolver(), LocationManager.NETWORK_PROVIDER)) {
786                    resId = R.string.wifi_scan_notify_text_location_on;
787                } else {
788                    resId = R.string.wifi_scan_notify_text_location_off;
789                }
790                CharSequence charSeq = getText(resId);
791                mEmptyView.append(charSeq);
792            }
793        }
794        getPreferenceScreen().removeAll();
795    }
796
797    private void addMessagePreference(int messageId) {
798        if (mEmptyView != null) mEmptyView.setText(messageId);
799        getPreferenceScreen().removeAll();
800    }
801
802    /** Returns sorted list of access points */
803    private static List<AccessPoint> constructAccessPoints(Context context,
804            WifiManager wifiManager, WifiInfo lastInfo, DetailedState lastState) {
805        ArrayList<AccessPoint> accessPoints = new ArrayList<AccessPoint>();
806        /** Lookup table to more quickly update AccessPoints by only considering objects with the
807         * correct SSID.  Maps SSID -> List of AccessPoints with the given SSID.  */
808        Multimap<String, AccessPoint> apMap = new Multimap<String, AccessPoint>();
809
810        final List<WifiConfiguration> configs = wifiManager.getConfiguredNetworks();
811        if (configs != null) {
812            for (WifiConfiguration config : configs) {
813                AccessPoint accessPoint = new AccessPoint(context, config);
814                if (lastInfo != null && lastState != null) {
815                    accessPoint.update(lastInfo, lastState);
816                }
817                accessPoints.add(accessPoint);
818                apMap.put(accessPoint.ssid, accessPoint);
819            }
820        }
821
822        final List<ScanResult> results = wifiManager.getScanResults();
823        if (results != null) {
824            for (ScanResult result : results) {
825                // Ignore hidden and ad-hoc networks.
826                if (result.SSID == null || result.SSID.length() == 0 ||
827                        result.capabilities.contains("[IBSS]")) {
828                    continue;
829                }
830
831                boolean found = false;
832                for (AccessPoint accessPoint : apMap.getAll(result.SSID)) {
833                    if (accessPoint.update(result))
834                        found = true;
835                }
836                if (!found) {
837                    AccessPoint accessPoint = new AccessPoint(context, result);
838                    accessPoints.add(accessPoint);
839                    apMap.put(accessPoint.ssid, accessPoint);
840                }
841            }
842        }
843
844        // Pre-sort accessPoints to speed preference insertion
845        Collections.sort(accessPoints);
846        return accessPoints;
847    }
848
849    /** A restricted multimap for use in constructAccessPoints */
850    private static class Multimap<K,V> {
851        private final HashMap<K,List<V>> store = new HashMap<K,List<V>>();
852        /** retrieve a non-null list of values with key K */
853        List<V> getAll(K key) {
854            List<V> values = store.get(key);
855            return values != null ? values : Collections.<V>emptyList();
856        }
857
858        void put(K key, V val) {
859            List<V> curVals = store.get(key);
860            if (curVals == null) {
861                curVals = new ArrayList<V>(3);
862                store.put(key, curVals);
863            }
864            curVals.add(val);
865        }
866    }
867
868    private void handleEvent(Context context, Intent intent) {
869        String action = intent.getAction();
870        if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {
871            updateWifiState(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
872                    WifiManager.WIFI_STATE_UNKNOWN));
873        } else if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action) ||
874                WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION.equals(action) ||
875                WifiManager.LINK_CONFIGURATION_CHANGED_ACTION.equals(action)) {
876                updateAccessPoints();
877        } else if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)) {
878            //Ignore supplicant state changes when network is connected
879            //TODO: we should deprecate SUPPLICANT_STATE_CHANGED_ACTION and
880            //introduce a broadcast that combines the supplicant and network
881            //network state change events so the apps dont have to worry about
882            //ignoring supplicant state change when network is connected
883            //to get more fine grained information.
884            SupplicantState state = (SupplicantState) intent.getParcelableExtra(
885                    WifiManager.EXTRA_NEW_STATE);
886            if (!mConnected.get() && SupplicantState.isHandshakeState(state)) {
887                updateConnectionState(WifiInfo.getDetailedStateOf(state));
888             } else {
889                 // During a connect, we may have the supplicant
890                 // state change affect the detailed network state.
891                 // Make sure a lost connection is updated as well.
892                 updateConnectionState(null);
893             }
894        } else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) {
895            NetworkInfo info = (NetworkInfo) intent.getParcelableExtra(
896                    WifiManager.EXTRA_NETWORK_INFO);
897            mConnected.set(info.isConnected());
898            changeNextButtonState(info.isConnected());
899            updateAccessPoints();
900            updateConnectionState(info.getDetailedState());
901            if (mAutoFinishOnConnection && info.isConnected()) {
902                Activity activity = getActivity();
903                if (activity != null) {
904                    activity.setResult(Activity.RESULT_OK);
905                    activity.finish();
906                }
907                return;
908            }
909        } else if (WifiManager.RSSI_CHANGED_ACTION.equals(action)) {
910            updateConnectionState(null);
911        }
912    }
913
914    private void updateConnectionState(DetailedState state) {
915        /* sticky broadcasts can call this when wifi is disabled */
916        if (!mWifiManager.isWifiEnabled()) {
917            mScanner.pause();
918            return;
919        }
920
921        if (state == DetailedState.OBTAINING_IPADDR) {
922            mScanner.pause();
923        } else {
924            mScanner.resume();
925        }
926
927        mLastInfo = mWifiManager.getConnectionInfo();
928        if (state != null) {
929            mLastState = state;
930        }
931
932        for (int i = getPreferenceScreen().getPreferenceCount() - 1; i >= 0; --i) {
933            // Maybe there's a WifiConfigPreference
934            Preference preference = getPreferenceScreen().getPreference(i);
935            if (preference instanceof AccessPoint) {
936                final AccessPoint accessPoint = (AccessPoint) preference;
937                accessPoint.update(mLastInfo, mLastState);
938            }
939        }
940    }
941
942    private void updateWifiState(int state) {
943        Activity activity = getActivity();
944        if (activity != null) {
945            activity.invalidateOptionsMenu();
946        }
947
948        switch (state) {
949            case WifiManager.WIFI_STATE_ENABLED:
950                mScanner.resume();
951                return; // not break, to avoid the call to pause() below
952
953            case WifiManager.WIFI_STATE_ENABLING:
954                addMessagePreference(R.string.wifi_starting);
955                break;
956
957            case WifiManager.WIFI_STATE_DISABLED:
958                setOffMessage();
959                break;
960        }
961
962        mLastInfo = null;
963        mLastState = null;
964        mScanner.pause();
965    }
966
967    private class Scanner extends Handler {
968        private int mRetry = 0;
969
970        void resume() {
971            if (!hasMessages(0)) {
972                sendEmptyMessage(0);
973            }
974        }
975
976        void forceScan() {
977            removeMessages(0);
978            sendEmptyMessage(0);
979        }
980
981        void pause() {
982            mRetry = 0;
983            removeMessages(0);
984        }
985
986        @Override
987        public void handleMessage(Message message) {
988            if (mWifiManager.startScan()) {
989                mRetry = 0;
990            } else if (++mRetry >= 3) {
991                mRetry = 0;
992                Activity activity = getActivity();
993                if (activity != null) {
994                    Toast.makeText(activity, R.string.wifi_fail_to_scan,
995                            Toast.LENGTH_LONG).show();
996                }
997                return;
998            }
999            sendEmptyMessageDelayed(0, WIFI_RESCAN_INTERVAL_MS);
1000        }
1001    }
1002
1003    /**
1004     * Renames/replaces "Next" button when appropriate. "Next" button usually exists in
1005     * Wifi setup screens, not in usual wifi settings screen.
1006     *
1007     * @param connected true when the device is connected to a wifi network.
1008     */
1009    private void changeNextButtonState(boolean connected) {
1010        if (mEnableNextOnConnection && hasNextButton()) {
1011            getNextButton().setEnabled(connected);
1012        }
1013    }
1014
1015    @Override
1016    public void onClick(DialogInterface dialogInterface, int button) {
1017        if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) {
1018            forget();
1019        } else if (button == WifiDialog.BUTTON_SUBMIT) {
1020            if (mDialog != null) {
1021                submit(mDialog.getController());
1022            }
1023        }
1024    }
1025
1026    /* package */ void submit(WifiConfigController configController) {
1027
1028        final WifiConfiguration config = configController.getConfig();
1029
1030        if (config == null) {
1031            if (mSelectedAccessPoint != null
1032                    && mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
1033                mWifiManager.connect(mSelectedAccessPoint.networkId,
1034                        mConnectListener);
1035            }
1036        } else if (config.networkId != INVALID_NETWORK_ID) {
1037            if (mSelectedAccessPoint != null) {
1038                mWifiManager.save(config, mSaveListener);
1039            }
1040        } else {
1041            if (configController.isEdit()) {
1042                mWifiManager.save(config, mSaveListener);
1043            } else {
1044                mWifiManager.connect(config, mConnectListener);
1045            }
1046        }
1047
1048        if (mWifiManager.isWifiEnabled()) {
1049            mScanner.resume();
1050        }
1051        updateAccessPoints();
1052    }
1053
1054    /* package */ void forget() {
1055        if (mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) {
1056            // Should not happen, but a monkey seems to triger it
1057            Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
1058            return;
1059        }
1060
1061        mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener);
1062
1063        if (mWifiManager.isWifiEnabled()) {
1064            mScanner.resume();
1065        }
1066        updateAccessPoints();
1067
1068        // We need to rename/replace "Next" button in wifi setup context.
1069        changeNextButtonState(false);
1070    }
1071
1072    /**
1073     * Refreshes acccess points and ask Wifi module to scan networks again.
1074     */
1075    /* package */ void refreshAccessPoints() {
1076        if (mWifiManager.isWifiEnabled()) {
1077            mScanner.resume();
1078        }
1079
1080        getPreferenceScreen().removeAll();
1081    }
1082
1083    /**
1084     * Called when "add network" button is pressed.
1085     */
1086    /* package */ void onAddNetworkPressed() {
1087        // No exact access point is selected.
1088        mSelectedAccessPoint = null;
1089        showDialog(null, true);
1090    }
1091
1092    /* package */ int getAccessPointsCount() {
1093        final boolean wifiIsEnabled = mWifiManager.isWifiEnabled();
1094        if (wifiIsEnabled) {
1095            return getPreferenceScreen().getPreferenceCount();
1096        } else {
1097            return 0;
1098        }
1099    }
1100
1101    /**
1102     * Requests wifi module to pause wifi scan. May be ignored when the module is disabled.
1103     */
1104    /* package */ void pauseWifiScan() {
1105        if (mWifiManager.isWifiEnabled()) {
1106            mScanner.pause();
1107        }
1108    }
1109
1110    /**
1111     * Requests wifi module to resume wifi scan. May be ignored when the module is disabled.
1112     */
1113    /* package */ void resumeWifiScan() {
1114        if (mWifiManager.isWifiEnabled()) {
1115            mScanner.resume();
1116        }
1117    }
1118
1119    @Override
1120    protected int getHelpResource() {
1121        if (mSetupWizardMode) {
1122            return 0;
1123        }
1124        return R.string.help_url_wifi;
1125    }
1126
1127    /**
1128     * Used as the outer frame of all setup wizard pages that need to adjust their margins based
1129     * on the total size of the available display. (e.g. side margins set to 10% of total width.)
1130     */
1131    public static class ProportionalOuterFrame extends RelativeLayout {
1132        public ProportionalOuterFrame(Context context) {
1133            super(context);
1134        }
1135        public ProportionalOuterFrame(Context context, AttributeSet attrs) {
1136            super(context, attrs);
1137        }
1138        public ProportionalOuterFrame(Context context, AttributeSet attrs, int defStyle) {
1139            super(context, attrs, defStyle);
1140        }
1141
1142        /**
1143         * Set our margins and title area height proportionally to the available display size
1144         */
1145        @Override
1146        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
1147            int parentWidth = MeasureSpec.getSize(widthMeasureSpec);
1148            int parentHeight = MeasureSpec.getSize(heightMeasureSpec);
1149            final Resources res = getContext().getResources();
1150            float titleHeight = res.getFraction(R.dimen.setup_title_height, 1, 1);
1151            float sideMargin = res.getFraction(R.dimen.setup_border_width, 1, 1);
1152            int bottom = res.getDimensionPixelSize(R.dimen.setup_margin_bottom);
1153            setPaddingRelative(
1154                    (int) (parentWidth * sideMargin),
1155                    0,
1156                    (int) (parentWidth * sideMargin),
1157                    bottom);
1158            View title = findViewById(R.id.title_area);
1159            if (title != null) {
1160                title.setMinimumHeight((int) (parentHeight * titleHeight));
1161            }
1162            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
1163        }
1164    }
1165
1166    public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
1167        new SearchIndexProvider() {
1168            @Override
1169            public List<SearchIndexableResource> getXmlResourcesToIndex(
1170                    Context context, boolean enabled) {
1171                return null;
1172            }
1173
1174            @Override
1175            public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
1176                final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>();
1177                final Resources res = context.getResources();
1178
1179                // Add fragment title
1180                SearchIndexableRaw data = new SearchIndexableRaw(context);
1181                data.title = res.getString(R.string.wifi_settings);
1182                data.screenTitle = res.getString(R.string.wifi_settings);
1183                result.add(data);
1184
1185                // Add available Wi-Fi access points
1186                WifiManager wifiManager =
1187                        (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
1188                final Collection<AccessPoint> accessPoints =
1189                        constructAccessPoints(context, wifiManager, null, null);
1190                for (AccessPoint accessPoint : accessPoints) {
1191                    // We are indexing only the saved Wi-Fi networks.
1192                    if (accessPoint.getConfig() == null) continue;
1193                    data = new SearchIndexableRaw(context);
1194                    data.title = accessPoint.getTitle().toString();
1195                    data.screenTitle = res.getString(R.string.wifi_settings);
1196                    data.enabled = enabled;
1197                    result.add(data);
1198                }
1199
1200                return result;
1201            }
1202        };
1203}
1204