src/com/android/settings/wifi/WifiSettings.java

   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
  17 package com.android.settings.wifi;
  18
  19 import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
  20
  21 import android.annotation.NonNull;
  22 import android.app.Activity;
  23 import android.app.Dialog;
  24 import android.app.admin.DevicePolicyManager;
  25 import android.content.ComponentName;
  26 import android.content.ContentResolver;
  27 import android.content.Context;
  28 import android.content.Intent;
  29 import android.content.pm.PackageManager;
  30 import android.content.pm.PackageManager.NameNotFoundException;
  31 import android.content.res.Resources;
  32 import android.net.ConnectivityManager;
  33 import android.net.NetworkInfo;
  34 import android.net.NetworkInfo.State;
  35 import android.net.wifi.WifiConfiguration;
  36 import android.net.wifi.WifiManager;
  37 import android.net.wifi.WpsInfo;
  38 import android.nfc.NfcAdapter;
  39 import android.os.Bundle;
  40 import android.os.HandlerThread;
  41 import android.os.Process;
  42 import android.provider.Settings;
  43 import android.support.annotation.VisibleForTesting;
  44 import android.support.v7.preference.Preference;
  45 import android.support.v7.preference.PreferenceCategory;
  46 import android.util.Log;
  47 import android.view.ContextMenu;
  48 import android.view.ContextMenu.ContextMenuInfo;
  49 import android.view.Menu;
  50 import android.view.MenuItem;
  51 import android.view.View;
  52 import android.widget.Toast;
  53
  54 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
  55 import com.android.settings.LinkifyUtils;
  56 import com.android.settings.R;
  57 import com.android.settings.RestrictedSettingsFragment;
  58 import com.android.settings.SettingsActivity;
  59 import com.android.settings.dashboard.SummaryLoader;
  60 import com.android.settings.location.ScanningSettings;
  61 import com.android.settings.search.BaseSearchIndexProvider;
  62 import com.android.settings.search.Indexable;
  63 import com.android.settings.search.SearchIndexableRaw;
  64 import com.android.settings.widget.SummaryUpdater.OnSummaryChangeListener;
  65 import com.android.settings.widget.SwitchBarController;
  66 import com.android.settings.wifi.details.WifiNetworkDetailsFragment;
  67 import com.android.settingslib.RestrictedLockUtils;
  68 import com.android.settingslib.wifi.AccessPoint;
  69 import com.android.settingslib.wifi.AccessPoint.AccessPointListener;
  70 import com.android.settingslib.wifi.AccessPointPreference;
  71 import com.android.settingslib.wifi.WifiTracker;
  72 import com.android.settingslib.wifi.WifiTrackerFactory;
  73
  74 import java.util.ArrayList;
  75 import java.util.List;
  76
  77 /**
  78  * Two types of UI are provided here.
  79  *
  80  * The first is for "usual Settings", appearing as any other Setup fragment.
  81  *
  82  * The second is for Setup Wizard, with a simplified interface that hides the action bar
  83  * and menus.
  84  */
  85 public class WifiSettings extends RestrictedSettingsFragment
  86         implements Indexable, WifiTracker.WifiListener, AccessPointListener,
  87         WifiDialog.WifiDialogListener {
  88
  89     private static final String TAG = "WifiSettings";
  90     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
  91
  92     /* package */ static final int MENU_ID_WPS_PBC = Menu.FIRST;
  93     private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1;
  94     private static final int MENU_ID_CONNECT = Menu.FIRST + 6;
  95     private static final int MENU_ID_FORGET = Menu.FIRST + 7;
  96     private static final int MENU_ID_MODIFY = Menu.FIRST + 8;
  97     private static final int MENU_ID_WRITE_NFC = Menu.FIRST + 9;
  98
  99     public static final int WIFI_DIALOG_ID = 1;
 100     /* package */ static final int WPS_PBC_DIALOG_ID = 2;
 101     private static final int WPS_PIN_DIALOG_ID = 3;
 102     private static final int WRITE_NFC_DIALOG_ID = 6;
 103
 104     // Instance state keys
 105     private static final String SAVE_DIALOG_MODE = "dialog_mode";
 106     private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state";
 107     private static final String SAVED_WIFI_NFC_DIALOG_STATE = "wifi_nfc_dlg_state";
 108
 109     private static final String PREF_KEY_EMPTY_WIFI_LIST = "wifi_empty_list";
 110     private static final String PREF_KEY_CONNECTED_ACCESS_POINTS = "connected_access_point";
 111     private static final String PREF_KEY_ACCESS_POINTS = "access_points";
 112     private static final String PREF_KEY_ADDITIONAL_SETTINGS = "additional_settings";
 113     private static final String PREF_KEY_CONFIGURE_WIFI_SETTINGS = "configure_settings";
 114     private static final String PREF_KEY_SAVED_NETWORKS = "saved_networks";
 115
 116     private final Runnable mUpdateAccessPointsRunnable = () -> {
 117         updateAccessPointPreferences();
 118     };
 119     private final Runnable mHideProgressBarRunnable = () -> {
 120         setProgressBarVisible(false);
 121     };
 122
 123     protected WifiManager mWifiManager;
 124     private WifiManager.ActionListener mConnectListener;
 125     private WifiManager.ActionListener mSaveListener;
 126     private WifiManager.ActionListener mForgetListener;
 127
 128     /**
 129      * The state of {@link #isUiRestricted()} at {@link #onCreate(Bundle)}}. This is neccesary to
 130      * ensure that behavior is consistent if {@link #isUiRestricted()} changes. It could be changed
 131      * by the Test DPC tool in AFW mode.
 132      */
 133     private boolean mIsRestricted;
 134
 135     private WifiEnabler mWifiEnabler;
 136     // An access point being editted is stored here.
 137     private AccessPoint mSelectedAccessPoint;
 138
 139     private WifiDialog mDialog;
 140     private WriteWifiConfigToNfcDialog mWifiToNfcDialog;
 141
 142     private View mProgressHeader;
 143
 144     // this boolean extra specifies whether to disable the Next button when not connected. Used by
 145     // account creation outside of setup wizard.
 146     private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect";
 147     // This string extra specifies a network to open the connect dialog on, so the user can enter
 148     // network credentials.  This is used by quick settings for secured networks.
 149     private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid";
 150
 151     // should Next button only be enabled when we have a connection?
 152     private boolean mEnableNextOnConnection;
 153
 154     // Save the dialog details
 155     private int mDialogMode;
 156     private AccessPoint mDlgAccessPoint;
 157     private Bundle mAccessPointSavedState;
 158     private Bundle mWifiNfcDialogSavedState;
 159
 160     private WifiTracker mWifiTracker;
 161     private String mOpenSsid;
 162
 163     private HandlerThread mBgThread;
 164
 165     private AccessPointPreference.UserBadgeCache mUserBadgeCache;
 166
 167     private PreferenceCategory mConnectedAccessPointPreferenceCategory;
 168     private PreferenceCategory mAccessPointsPreferenceCategory;
 169     private PreferenceCategory mAdditionalSettingsPreferenceCategory;
 170     private Preference mAddPreference;
 171     private Preference mConfigureWifiSettingsPreference;
 172     private Preference mSavedNetworksPreference;
 173     private LinkablePreference mStatusMessagePreference;
 174
 175     // For Search
 176     private static final String DATA_KEY_REFERENCE = "main_toggle_wifi";
 177
 178     /* End of "used in Wifi Setup context" */
 179
 180     public WifiSettings() {
 181         super(DISALLOW_CONFIG_WIFI);
 182     }
 183
 184     @Override
 185     public void onViewCreated(View view, Bundle savedInstanceState) {
 186         super.onViewCreated(view, savedInstanceState);
 187         final Activity activity = getActivity();
 188         if (activity != null) {
 189             mProgressHeader = setPinnedHeaderView(R.layout.wifi_progress_header)
 190                     .findViewById(R.id.progress_bar_animation);
 191             setProgressBarVisible(false);
 192         }
 193     }
 194
 195     @Override
 196     public void onCreate(Bundle icicle) {
 197         super.onCreate(icicle);
 198
 199         // TODO(b/37429702): Add animations and preference comparator back after initial screen is
 200         // loaded (ODR).
 201         setAnimationAllowed(false);
 202
 203         addPreferences();
 204
 205         mIsRestricted = isUiRestricted();
 206
 207         mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND);
 208         mBgThread.start();
 209     }
 210
 211     private void addPreferences() {
 212         addPreferencesFromResource(R.xml.wifi_settings);
 213
 214         mConnectedAccessPointPreferenceCategory =
 215                 (PreferenceCategory) findPreference(PREF_KEY_CONNECTED_ACCESS_POINTS);
 216         mAccessPointsPreferenceCategory =
 217                 (PreferenceCategory) findPreference(PREF_KEY_ACCESS_POINTS);
 218         mAdditionalSettingsPreferenceCategory =
 219                 (PreferenceCategory) findPreference(PREF_KEY_ADDITIONAL_SETTINGS);
 220         mConfigureWifiSettingsPreference = findPreference(PREF_KEY_CONFIGURE_WIFI_SETTINGS);
 221         mSavedNetworksPreference = findPreference(PREF_KEY_SAVED_NETWORKS);
 222
 223         Context prefContext = getPrefContext();
 224         mAddPreference = new Preference(prefContext);
 225         mAddPreference.setIcon(R.drawable.ic_menu_add_inset);
 226         mAddPreference.setTitle(R.string.wifi_add_network);
 227         mStatusMessagePreference = new LinkablePreference(prefContext);
 228
 229         mUserBadgeCache = new AccessPointPreference.UserBadgeCache(getPackageManager());
 230     }
 231
 232     @Override
 233     public void onDestroy() {
 234         mBgThread.quit();
 235         super.onDestroy();
 236     }
 237
 238     @Override
 239     public void onActivityCreated(Bundle savedInstanceState) {
 240         super.onActivityCreated(savedInstanceState);
 241
 242         mWifiTracker = WifiTrackerFactory.create(
 243                 getActivity(), this, mBgThread.getLooper(), true, true, false);
 244         mWifiManager = mWifiTracker.getManager();
 245
 246         mConnectListener = new WifiManager.ActionListener() {
 247                                    @Override
 248                                    public void onSuccess() {
 249                                    }
 250                                    @Override
 251                                    public void onFailure(int reason) {
 252                                        Activity activity = getActivity();
 253                                        if (activity != null) {
 254                                            Toast.makeText(activity,
 255                                                 R.string.wifi_failed_connect_message,
 256                                                 Toast.LENGTH_SHORT).show();
 257                                        }
 258                                    }
 259                                };
 260
 261         mSaveListener = new WifiManager.ActionListener() {
 262                                 @Override
 263                                 public void onSuccess() {
 264                                 }
 265                                 @Override
 266                                 public void onFailure(int reason) {
 267                                     Activity activity = getActivity();
 268                                     if (activity != null) {
 269                                         Toast.makeText(activity,
 270                                             R.string.wifi_failed_save_message,
 271                                             Toast.LENGTH_SHORT).show();
 272                                     }
 273                                 }
 274                             };
 275
 276         mForgetListener = new WifiManager.ActionListener() {
 277                                    @Override
 278                                    public void onSuccess() {
 279                                    }
 280                                    @Override
 281                                    public void onFailure(int reason) {
 282                                        Activity activity = getActivity();
 283                                        if (activity != null) {
 284                                            Toast.makeText(activity,
 285                                                R.string.wifi_failed_forget_message,
 286                                                Toast.LENGTH_SHORT).show();
 287                                        }
 288                                    }
 289                                };
 290
 291         if (savedInstanceState != null) {
 292             mDialogMode = savedInstanceState.getInt(SAVE_DIALOG_MODE);
 293             if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) {
 294                 mAccessPointSavedState =
 295                     savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE);
 296             }
 297
 298             if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) {
 299                 mWifiNfcDialogSavedState =
 300                     savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE);
 301             }
 302         }
 303
 304         // if we're supposed to enable/disable the Next button based on our current connection
 305         // state, start it off in the right state
 306         Intent intent = getActivity().getIntent();
 307         mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false);
 308
 309         if (mEnableNextOnConnection) {
 310             if (hasNextButton()) {
 311                 final ConnectivityManager connectivity = (ConnectivityManager)
 312                         getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
 313                 if (connectivity != null) {
 314                     NetworkInfo info = connectivity.getNetworkInfo(
 315                             ConnectivityManager.TYPE_WIFI);
 316                     changeNextButtonState(info.isConnected());
 317                 }
 318             }
 319         }
 320
 321         registerForContextMenu(getListView());
 322         setHasOptionsMenu(true);
 323
 324         if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) {
 325             mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID);
 326         }
 327     }
 328
 329     @Override
 330     public void onDestroyView() {
 331         super.onDestroyView();
 332
 333         if (mWifiEnabler != null) {
 334             mWifiEnabler.teardownSwitchController();
 335         }
 336     }
 337
 338     @Override
 339     public void onStart() {
 340         super.onStart();
 341
 342         // On/off switch is hidden for Setup Wizard (returns null)
 343         mWifiEnabler = createWifiEnabler();
 344
 345         mWifiTracker.startTracking();
 346
 347         if (mIsRestricted) {
 348             restrictUi();
 349             return;
 350         }
 351
 352         onWifiStateChanged(mWifiManager.getWifiState());
 353     }
 354
 355     private void restrictUi() {
 356         if (!isUiRestrictedByOnlyAdmin()) {
 357             getEmptyTextView().setText(R.string.wifi_empty_list_user_restricted);
 358         }
 359         getPreferenceScreen().removeAll();
 360     }
 361
 362     /**
 363      * Only update the AP list if there are not any APs currently shown.
 364      *
 365      * <p>Thus forceUpdate will only be called during cold start or when toggling between wifi on
 366      * and off. In other use cases, the previous APs will remain until the next update is received
 367      * from {@link WifiTracker}.
 368      */
 369     private void conditionallyForceUpdateAPs() {
 370         if (mAccessPointsPreferenceCategory.getPreferenceCount() > 0
 371                 && mAccessPointsPreferenceCategory.getPreference(0) instanceof
 372                         AccessPointPreference) {
 373             // Make sure we don't update due to callbacks initiated by sticky broadcasts in
 374             // WifiTracker.
 375             Log.d(TAG, "Did not force update APs due to existing APs displayed");
 376             getView().removeCallbacks(mUpdateAccessPointsRunnable);
 377             return;
 378         }
 379         setProgressBarVisible(true);
 380         mWifiTracker.forceUpdate();
 381         if (DEBUG) {
 382             Log.d(TAG, "WifiSettings force update APs: " + mWifiTracker.getAccessPoints());
 383         }
 384         getView().removeCallbacks(mUpdateAccessPointsRunnable);
 385         updateAccessPointPreferences();
 386     }
 387
 388     /**
 389      * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard)
 390      */
 391     private WifiEnabler createWifiEnabler() {
 392         final SettingsActivity activity = (SettingsActivity) getActivity();
 393         return new WifiEnabler(activity, new SwitchBarController(activity.getSwitchBar()),
 394             mMetricsFeatureProvider);
 395     }
 396
 397     @Override
 398     public void onResume() {
 399         final Activity activity = getActivity();
 400         super.onResume();
 401
 402         // Because RestrictedSettingsFragment's onResume potentially requests authorization,
 403         // which changes the restriction state, recalculate it.
 404         final boolean alreadyImmutablyRestricted = mIsRestricted;
 405         mIsRestricted = isUiRestricted();
 406         if (!alreadyImmutablyRestricted && mIsRestricted) {
 407             restrictUi();
 408         }
 409
 410         if (mWifiEnabler != null) {
 411             mWifiEnabler.resume(activity);
 412         }
 413     }
 414
 415     @Override
 416     public void onPause() {
 417         super.onPause();
 418         if (mWifiEnabler != null) {
 419             mWifiEnabler.pause();
 420         }
 421     }
 422
 423     @Override
 424     public void onStop() {
 425         mWifiTracker.stopTracking();
 426         getView().removeCallbacks(mUpdateAccessPointsRunnable);
 427         getView().removeCallbacks(mHideProgressBarRunnable);
 428         super.onStop();
 429     }
 430
 431     @Override
 432     public void onActivityResult(int requestCode, int resultCode, Intent data) {
 433         super.onActivityResult(requestCode, resultCode, data);
 434
 435         final boolean formerlyRestricted = mIsRestricted;
 436         mIsRestricted = isUiRestricted();
 437         if (formerlyRestricted && !mIsRestricted
 438                 && getPreferenceScreen().getPreferenceCount() == 0) {
 439             // De-restrict the ui
 440             addPreferences();
 441         }
 442     }
 443
 444     @Override
 445     public int getMetricsCategory() {
 446         return MetricsEvent.WIFI;
 447     }
 448
 449     @Override
 450     public void onSaveInstanceState(Bundle outState) {
 451         super.onSaveInstanceState(outState);
 452
 453         // If the dialog is showing, save its state.
 454         if (mDialog != null && mDialog.isShowing()) {
 455             outState.putInt(SAVE_DIALOG_MODE, mDialogMode);
 456             if (mDlgAccessPoint != null) {
 457                 mAccessPointSavedState = new Bundle();
 458                 mDlgAccessPoint.saveWifiState(mAccessPointSavedState);
 459                 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState);
 460             }
 461         }
 462
 463         if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) {
 464             Bundle savedState = new Bundle();
 465             mWifiToNfcDialog.saveState(savedState);
 466             outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState);
 467         }
 468     }
 469
 470     @Override
 471     public boolean onOptionsItemSelected(MenuItem item) {
 472         // If the user is not allowed to configure wifi, do not handle menu selections.
 473         if (mIsRestricted) {
 474             return false;
 475         }
 476
 477         switch (item.getItemId()) {
 478             case MENU_ID_WPS_PBC:
 479                 showDialog(WPS_PBC_DIALOG_ID);
 480                 return true;
 481             case MENU_ID_WPS_PIN:
 482                 showDialog(WPS_PIN_DIALOG_ID);
 483                 return true;
 484         }
 485         return super.onOptionsItemSelected(item);
 486     }
 487
 488     @Override
 489     public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) {
 490             Preference preference = (Preference) view.getTag();
 491
 492             if (preference instanceof LongPressAccessPointPreference) {
 493                 mSelectedAccessPoint =
 494                         ((LongPressAccessPointPreference) preference).getAccessPoint();
 495                 menu.setHeaderTitle(mSelectedAccessPoint.getSsid());
 496                 if (mSelectedAccessPoint.isConnectable()) {
 497                     menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect);
 498                 }
 499
 500                 WifiConfiguration config = mSelectedAccessPoint.getConfig();
 501                 // Some configs are ineditable
 502                 if (isEditabilityLockedDown(getActivity(), config)) {
 503                     return;
 504                 }
 505
 506                 if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) {
 507                     // Allow forgetting a network if either the network is saved or ephemerally
 508                     // connected. (In the latter case, "forget" blacklists the network so it won't
 509                     // be used again, ephemerally).
 510                     menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget);
 511                 }
 512                 if (mSelectedAccessPoint.isSaved()) {
 513                     menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify);
 514                     NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
 515                     if (nfcAdapter != null && nfcAdapter.isEnabled() &&
 516                             mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) {
 517                         // Only allow writing of NFC tags for password-protected networks.
 518                         menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc);
 519                     }
 520                 }
 521             }
 522     }
 523
 524     @Override
 525     public boolean onContextItemSelected(MenuItem item) {
 526         if (mSelectedAccessPoint == null) {
 527             return super.onContextItemSelected(item);
 528         }
 529         switch (item.getItemId()) {
 530             case MENU_ID_CONNECT: {
 531                 boolean isSavedNetwork = mSelectedAccessPoint.isSaved();
 532                 if (isSavedNetwork) {
 533                     connect(mSelectedAccessPoint.getConfig(), isSavedNetwork);
 534                 } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) {
 535                     /** Bypass dialog for unsecured networks */
 536                     mSelectedAccessPoint.generateOpenNetworkConfig();
 537                     connect(mSelectedAccessPoint.getConfig(), isSavedNetwork);
 538                 } else {
 539                     showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT);
 540                 }
 541                 return true;
 542             }
 543             case MENU_ID_FORGET: {
 544                 forget();
 545                 return true;
 546             }
 547             case MENU_ID_MODIFY: {
 548                 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_MODIFY);
 549                 return true;
 550             }
 551             case MENU_ID_WRITE_NFC:
 552                 showDialog(WRITE_NFC_DIALOG_ID);
 553                 return true;
 554
 555         }
 556         return super.onContextItemSelected(item);
 557     }
 558
 559     @Override
 560     public boolean onPreferenceTreeClick(Preference preference) {
 561         // If the preference has a fragment set, open that
 562         if (preference.getFragment() != null) {
 563             preference.setOnPreferenceClickListener(null);
 564             return super.onPreferenceTreeClick(preference);
 565         }
 566
 567         if (preference instanceof LongPressAccessPointPreference) {
 568             mSelectedAccessPoint = ((LongPressAccessPointPreference) preference).getAccessPoint();
 569             if (mSelectedAccessPoint == null) {
 570                 return false;
 571             }
 572             if (mSelectedAccessPoint.isActive()) {
 573                 return super.onPreferenceTreeClick(preference);
 574             }
 575             /**
 576              * Bypass dialog and connect to unsecured networks, or previously connected saved
 577              * networks, or Passpoint provided networks.
 578              */
 579             WifiConfiguration config = mSelectedAccessPoint.getConfig();
 580             if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) {
 581                 mSelectedAccessPoint.generateOpenNetworkConfig();
 582                 connect(mSelectedAccessPoint.getConfig(), mSelectedAccessPoint.isSaved());
 583             } else if (mSelectedAccessPoint.isSaved() && config != null
 584                     && config.getNetworkSelectionStatus() != null
 585                     && config.getNetworkSelectionStatus().getHasEverConnected()) {
 586                 connect(config, true /* isSavedNetwork */);
 587             } else if (mSelectedAccessPoint.isPasspoint()) {
 588                 // Access point provided by an installed Passpoint provider, connect using
 589                 // the associated config.
 590                 connect(config, true /* isSavedNetwork */);
 591             } else {
 592                 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT);
 593             }
 594         } else if (preference == mAddPreference) {
 595             onAddNetworkPressed();
 596         } else {
 597             return super.onPreferenceTreeClick(preference);
 598         }
 599         return true;
 600     }
 601
 602     private void showDialog(AccessPoint accessPoint, int dialogMode) {
 603         if (accessPoint != null) {
 604             WifiConfiguration config = accessPoint.getConfig();
 605             if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) {
 606                 RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getActivity(),
 607                         RestrictedLockUtils.getDeviceOwner(getActivity()));
 608                 return;
 609             }
 610         }
 611
 612         if (mDialog != null) {
 613             removeDialog(WIFI_DIALOG_ID);
 614             mDialog = null;
 615         }
 616
 617         // Save the access point and edit mode
 618         mDlgAccessPoint = accessPoint;
 619         mDialogMode = dialogMode;
 620
 621         showDialog(WIFI_DIALOG_ID);
 622     }
 623
 624     @Override
 625     public Dialog onCreateDialog(int dialogId) {
 626         switch (dialogId) {
 627             case WIFI_DIALOG_ID:
 628                 AccessPoint ap = mDlgAccessPoint; // For manual launch
 629                 if (ap == null) { // For re-launch from saved state
 630                     if (mAccessPointSavedState != null) {
 631                         ap = new AccessPoint(getActivity(), mAccessPointSavedState);
 632                         // For repeated orientation changes
 633                         mDlgAccessPoint = ap;
 634                         // Reset the saved access point data
 635                         mAccessPointSavedState = null;
 636                     }
 637                 }
 638                 // If it's null, fine, it's for Add Network
 639                 mSelectedAccessPoint = ap;
 640                 mDialog = new WifiDialog(getActivity(), this, ap, mDialogMode,
 641                         /* no hide submit/connect */ false);
 642                 return mDialog;
 643             case WPS_PBC_DIALOG_ID:
 644                 return new WpsDialog(getActivity(), WpsInfo.PBC);
 645             case WPS_PIN_DIALOG_ID:
 646                 return new WpsDialog(getActivity(), WpsInfo.DISPLAY);
 647             case WRITE_NFC_DIALOG_ID:
 648                 if (mSelectedAccessPoint != null) {
 649                     mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(
 650                             getActivity(),
 651                             mSelectedAccessPoint.getSecurity(),
 652                             new WifiManagerWrapper(mWifiManager));
 653                 } else if (mWifiNfcDialogSavedState != null) {
 654                     mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(getActivity(),
 655                             mWifiNfcDialogSavedState, new WifiManagerWrapper(mWifiManager));
 656                 }
 657
 658                 return mWifiToNfcDialog;
 659         }
 660         return super.onCreateDialog(dialogId);
 661     }
 662
 663     @Override
 664     public int getDialogMetricsCategory(int dialogId) {
 665         switch (dialogId) {
 666             case WIFI_DIALOG_ID:
 667                 return MetricsEvent.DIALOG_WIFI_AP_EDIT;
 668             case WPS_PBC_DIALOG_ID:
 669                 return MetricsEvent.DIALOG_WIFI_PBC;
 670             case WPS_PIN_DIALOG_ID:
 671                 return MetricsEvent.DIALOG_WIFI_PIN;
 672             case WRITE_NFC_DIALOG_ID:
 673                 return MetricsEvent.DIALOG_WIFI_WRITE_NFC;
 674             default:
 675                 return 0;
 676         }
 677     }
 678
 679     /**
 680      * Called to indicate the list of AccessPoints has been updated and
 681      * getAccessPoints should be called to get the latest information.
 682      */
 683     @Override
 684     public void onAccessPointsChanged() {
 685         Log.d(TAG, "onAccessPointsChanged (WifiTracker) callback initiated");
 686         updateAccessPointsDelayed();
 687     }
 688
 689     /**
 690      * Updates access points from {@link WifiManager#getScanResults()}. Adds a delay to have
 691      * progress bar displayed before starting to modify APs.
 692      */
 693     private void updateAccessPointsDelayed() {
 694         // Safeguard from some delayed event handling
 695         if (getActivity() != null && !mIsRestricted && mWifiManager.isWifiEnabled()) {
 696             setProgressBarVisible(true);
 697             getView().postDelayed(mUpdateAccessPointsRunnable, 300 /* delay milliseconds */);
 698         }
 699     }
 700
 701     /** Called when the state of Wifi has changed. */
 702     @Override
 703     public void onWifiStateChanged(int state) {
 704         if (mIsRestricted) {
 705             return;
 706         }
 707
 708         final int wifiState = mWifiManager.getWifiState();
 709         switch (wifiState) {
 710             case WifiManager.WIFI_STATE_ENABLED:
 711                 conditionallyForceUpdateAPs();
 712                 break;
 713
 714             case WifiManager.WIFI_STATE_ENABLING:
 715                 removeConnectedAccessPointPreference();
 716                 mAccessPointsPreferenceCategory.removeAll();
 717                 addMessagePreference(R.string.wifi_starting);
 718                 setProgressBarVisible(true);
 719                 break;
 720
 721             case WifiManager.WIFI_STATE_DISABLING:
 722                 removeConnectedAccessPointPreference();
 723                 mAccessPointsPreferenceCategory.removeAll();
 724                 addMessagePreference(R.string.wifi_stopping);
 725                 break;
 726
 727             case WifiManager.WIFI_STATE_DISABLED:
 728                 setOffMessage();
 729                 setAdditionalSettingsSummaries();
 730                 setProgressBarVisible(false);
 731                 break;
 732         }
 733     }
 734
 735     /**
 736      * Called when the connection state of wifi has changed and isConnected
 737      * should be called to get the updated state.
 738      */
 739     @Override
 740     public void onConnectedChanged() {
 741         updateAccessPointsDelayed();
 742         changeNextButtonState(mWifiTracker.isConnected());
 743     }
 744
 745     private void updateAccessPointPreferences() {
 746         // in case state has changed
 747         if (!mWifiManager.isWifiEnabled()) {
 748             return;
 749         }
 750         // AccessPoints are sorted by the WifiTracker
 751         final List<AccessPoint> accessPoints = mWifiTracker.getAccessPoints();
 752         if (DEBUG) {
 753             Log.d(TAG, "updateAccessPoints called for: " + accessPoints);
 754         }
 755
 756         boolean hasAvailableAccessPoints = false;
 757         mAccessPointsPreferenceCategory.removePreference(mStatusMessagePreference);
 758         cacheRemoveAllPrefs(mAccessPointsPreferenceCategory);
 759
 760         int index =
 761                 configureConnectedAccessPointPreferenceCategory(accessPoints) ? 1 : 0;
 762         int numAccessPoints = accessPoints.size();
 763         for (; index < numAccessPoints; index++) {
 764             AccessPoint accessPoint = accessPoints.get(index);
 765             // Ignore access points that are out of range.
 766             if (accessPoint.isReachable()) {
 767                 String key = AccessPointPreference.generatePreferenceKey(accessPoint);
 768                 hasAvailableAccessPoints = true;
 769                 LongPressAccessPointPreference pref =
 770                         (LongPressAccessPointPreference) getCachedPreference(key);
 771                 if (pref != null) {
 772                     pref.setOrder(index);
 773                     continue;
 774                 }
 775                 LongPressAccessPointPreference preference =
 776                         createLongPressActionPointPreference(accessPoint);
 777                 preference.setKey(key);
 778                 preference.setOrder(index);
 779                 if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsidStr())
 780                         && !accessPoint.isSaved()
 781                         && accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) {
 782                     onPreferenceTreeClick(preference);
 783                     mOpenSsid = null;
 784                 }
 785                 mAccessPointsPreferenceCategory.addPreference(preference);
 786                 accessPoint.setListener(WifiSettings.this);
 787                 preference.refresh();
 788             }
 789         }
 790         removeCachedPrefs(mAccessPointsPreferenceCategory);
 791         mAddPreference.setOrder(index);
 792         mAccessPointsPreferenceCategory.addPreference(mAddPreference);
 793         setAdditionalSettingsSummaries();
 794
 795         if (!hasAvailableAccessPoints) {
 796             setProgressBarVisible(true);
 797             Preference pref = new Preference(getPrefContext());
 798             pref.setSelectable(false);
 799             pref.setSummary(R.string.wifi_empty_list_wifi_on);
 800             pref.setOrder(index++);
 801             pref.setKey(PREF_KEY_EMPTY_WIFI_LIST);
 802             mAccessPointsPreferenceCategory.addPreference(pref);
 803         } else {
 804             // Continuing showing progress bar for an additional delay to overlap with animation
 805             getView().postDelayed(mHideProgressBarRunnable, 1700 /* delay millis */);
 806         }
 807     }
 808
 809     @NonNull
 810     private LongPressAccessPointPreference createLongPressActionPointPreference(
 811             AccessPoint accessPoint) {
 812         return new LongPressAccessPointPreference(accessPoint, getPrefContext(), mUserBadgeCache,
 813                 false, R.drawable.ic_wifi_signal_0, this);
 814     }
 815
 816     /**
 817      * Configure the ConnectedAccessPointPreferenceCategory and return true if the Category was
 818      * shown.
 819      */
 820     private boolean configureConnectedAccessPointPreferenceCategory(
 821             List<AccessPoint> accessPoints) {
 822         if (accessPoints.size() == 0) {
 823             removeConnectedAccessPointPreference();
 824             return false;
 825         }
 826
 827         AccessPoint connectedAp = accessPoints.get(0);
 828         if (!connectedAp.isActive()) {
 829             removeConnectedAccessPointPreference();
 830             return false;
 831         }
 832
 833         // Is the preference category empty?
 834         if (mConnectedAccessPointPreferenceCategory.getPreferenceCount() == 0) {
 835             addConnectedAccessPointPreference(connectedAp);
 836             return true;
 837         }
 838
 839         // Is the previous currently connected SSID different from the new one?
 840         if (!((AccessPointPreference)
 841                 mConnectedAccessPointPreferenceCategory.getPreference(0))
 842                         .getAccessPoint().getSsidStr().equals(
 843                                 connectedAp.getSsidStr())) {
 844             removeConnectedAccessPointPreference();
 845             addConnectedAccessPointPreference(connectedAp);
 846             return true;
 847         }
 848
 849         // Else same AP is connected, simply refresh the connected access point preference
 850         // (first and only access point in this category).
 851         ((LongPressAccessPointPreference) mConnectedAccessPointPreferenceCategory.getPreference(0))
 852                 .refresh();
 853         return true;
 854     }
 855
 856     /**
 857      * Creates a Preference for the given {@link AccessPoint} and adds it to the
 858      * {@link #mConnectedAccessPointPreferenceCategory}.
 859      */
 860     private void addConnectedAccessPointPreference(AccessPoint connectedAp) {
 861         String key = connectedAp.getBssid();
 862         LongPressAccessPointPreference pref = (LongPressAccessPointPreference)
 863                 getCachedPreference(key);
 864         if (pref == null) {
 865             pref = createLongPressActionPointPreference(connectedAp);
 866         }
 867
 868         // Save the state of the current access point in the bundle so that we can restore it
 869         // in the Wifi Network Details Fragment
 870         pref.getAccessPoint().saveWifiState(pref.getExtras());
 871         pref.setFragment(WifiNetworkDetailsFragment.class.getName());
 872         pref.refresh();
 873
 874         mConnectedAccessPointPreferenceCategory.addPreference(pref);
 875         mConnectedAccessPointPreferenceCategory.setVisible(true);
 876     }
 877
 878     /** Removes all preferences and hide the {@link #mConnectedAccessPointPreferenceCategory}. */
 879     private void removeConnectedAccessPointPreference() {
 880         mConnectedAccessPointPreferenceCategory.removeAll();
 881         mConnectedAccessPointPreferenceCategory.setVisible(false);
 882     }
 883
 884     private void setAdditionalSettingsSummaries() {
 885         mAdditionalSettingsPreferenceCategory.addPreference(mConfigureWifiSettingsPreference);
 886         final int defaultWakeupAvailable = getResources().getInteger(
 887                 com.android.internal.R.integer.config_wifi_wakeup_available);
 888         boolean wifiWakeupAvailable = Settings.Global.getInt(
 889                 getContentResolver(), Settings.Global.WIFI_WAKEUP_AVAILABLE, defaultWakeupAvailable)
 890                 == 1;
 891         if (wifiWakeupAvailable) {
 892             boolean wifiWakeupEnabled = Settings.Global.getInt(
 893                     getContentResolver(), Settings.Global.WIFI_WAKEUP_ENABLED, 0) == 1;
 894             mConfigureWifiSettingsPreference.setSummary(getString(wifiWakeupEnabled
 895                     ? R.string.wifi_configure_settings_preference_summary_wakeup_on
 896                     : R.string.wifi_configure_settings_preference_summary_wakeup_off));
 897         }
 898         int numSavedNetworks = mWifiTracker.getNumSavedNetworks();
 899         if (numSavedNetworks > 0) {
 900             mAdditionalSettingsPreferenceCategory.addPreference(mSavedNetworksPreference);
 901             mSavedNetworksPreference.setSummary(
 902                     getResources().getQuantityString(R.plurals.wifi_saved_access_points_summary,
 903                             numSavedNetworks, numSavedNetworks));
 904         } else {
 905             mAdditionalSettingsPreferenceCategory.removePreference(mSavedNetworksPreference);
 906         }
 907     }
 908
 909     private void setOffMessage() {
 910         final CharSequence title = getText(R.string.wifi_empty_list_wifi_off);
 911         // Don't use WifiManager.isScanAlwaysAvailable() to check the Wi-Fi scanning mode. Instead,
 912         // read the system settings directly. Because when the device is in Airplane mode, even if
 913         // Wi-Fi scanning mode is on, WifiManager.isScanAlwaysAvailable() still returns "off".
 914         final boolean wifiScanningMode = Settings.Global.getInt(getActivity().getContentResolver(),
 915                 Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1;
 916         final CharSequence description = wifiScanningMode ? getText(R.string.wifi_scan_notify_text)
 917                 : getText(R.string.wifi_scan_notify_text_scanning_off);
 918         final LinkifyUtils.OnClickListener clickListener = new LinkifyUtils.OnClickListener() {
 919             @Override
 920             public void onClick() {
 921                 final SettingsActivity activity = (SettingsActivity) getActivity();
 922                 activity.startPreferencePanel(WifiSettings.this,
 923                         ScanningSettings.class.getName(),
 924                         null, R.string.location_scanning_screen_title, null, null, 0);
 925             }
 926         };
 927         mStatusMessagePreference.setText(title, description, clickListener);
 928         removeConnectedAccessPointPreference();
 929         mAccessPointsPreferenceCategory.removeAll();
 930         mAccessPointsPreferenceCategory.addPreference(mStatusMessagePreference);
 931     }
 932
 933     private void addMessagePreference(int messageId) {
 934         mStatusMessagePreference.setTitle(messageId);
 935         removeConnectedAccessPointPreference();
 936         mAccessPointsPreferenceCategory.removeAll();
 937         mAccessPointsPreferenceCategory.addPreference(mStatusMessagePreference);
 938     }
 939
 940     protected void setProgressBarVisible(boolean visible) {
 941         if (mProgressHeader != null) {
 942             mProgressHeader.setVisibility(visible ? View.VISIBLE : View.GONE);
 943         }
 944     }
 945
 946     /**
 947      * Renames/replaces "Next" button when appropriate. "Next" button usually exists in
 948      * Wifi setup screens, not in usual wifi settings screen.
 949      *
 950      * @param enabled true when the device is connected to a wifi network.
 951      */
 952     private void changeNextButtonState(boolean enabled) {
 953         if (mEnableNextOnConnection && hasNextButton()) {
 954             getNextButton().setEnabled(enabled);
 955         }
 956     }
 957
 958     @Override
 959     public void onForget(WifiDialog dialog) {
 960         forget();
 961     }
 962
 963     @Override
 964     public void onSubmit(WifiDialog dialog) {
 965         if (mDialog != null) {
 966             submit(mDialog.getController());
 967         }
 968     }
 969
 970     /* package */ void submit(WifiConfigController configController) {
 971
 972         final WifiConfiguration config = configController.getConfig();
 973
 974         if (config == null) {
 975             if (mSelectedAccessPoint != null
 976                     && mSelectedAccessPoint.isSaved()) {
 977                 connect(mSelectedAccessPoint.getConfig(), true /* isSavedNetwork */);
 978             }
 979         } else if (configController.getMode() == WifiConfigUiBase.MODE_MODIFY) {
 980             mWifiManager.save(config, mSaveListener);
 981         } else {
 982             mWifiManager.save(config, mSaveListener);
 983             if (mSelectedAccessPoint != null) { // Not an "Add network"
 984                 connect(config, false /* isSavedNetwork */);
 985             }
 986         }
 987
 988         mWifiTracker.resumeScanning();
 989     }
 990
 991     /* package */ void forget() {
 992         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_FORGET);
 993         if (!mSelectedAccessPoint.isSaved()) {
 994             if (mSelectedAccessPoint.getNetworkInfo() != null &&
 995                     mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) {
 996                 // Network is active but has no network ID - must be ephemeral.
 997                 mWifiManager.disableEphemeralNetwork(
 998                         AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr()));
 999             } else {
1000                 // Should not happen, but a monkey seems to trigger it
1001                 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
1002                 return;
1003             }
1004         } else if (mSelectedAccessPoint.getConfig().isPasspoint()) {
1005             mWifiManager.removePasspointConfiguration(mSelectedAccessPoint.getConfig().FQDN);
1006         } else {
1007             mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener);
1008         }
1009
1010         mWifiTracker.resumeScanning();
1011
1012         // We need to rename/replace "Next" button in wifi setup context.
1013         changeNextButtonState(false);
1014     }
1015
1016     protected void connect(final WifiConfiguration config, boolean isSavedNetwork) {
1017         // Log subtype if configuration is a saved network.
1018         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT,
1019                 isSavedNetwork);
1020         mWifiManager.connect(config, mConnectListener);
1021         scrollToPreference(mConnectedAccessPointPreferenceCategory);
1022     }
1023
1024     protected void connect(final int networkId, boolean isSavedNetwork) {
1025         // Log subtype if configuration is a saved network.
1026         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT,
1027                 isSavedNetwork);
1028         mWifiManager.connect(networkId, mConnectListener);
1029     }
1030
1031     /**
1032      * Called when "add network" button is pressed.
1033      */
1034     /* package */ void onAddNetworkPressed() {
1035         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_ADD_NETWORK);
1036         // No exact access point is selected.
1037         mSelectedAccessPoint = null;
1038         showDialog(null, WifiConfigUiBase.MODE_CONNECT);
1039     }
1040
1041     @Override
1042     protected int getHelpResource() {
1043         return R.string.help_url_wifi;
1044     }
1045
1046     @Override
1047     public void onAccessPointChanged(final AccessPoint accessPoint) {
1048         Log.d(TAG, "onAccessPointChanged (singular) callback initiated");
1049         View view = getView();
1050         if (view != null) {
1051             view.post(new Runnable() {
1052                 @Override
1053                 public void run() {
1054                     Object tag = accessPoint.getTag();
1055                     if (tag != null) {
1056                         ((LongPressAccessPointPreference) tag).refresh();
1057                     }
1058                 }
1059             });
1060         }
1061     }
1062
1063     @Override
1064     public void onLevelChanged(AccessPoint accessPoint) {
1065         ((LongPressAccessPointPreference) accessPoint.getTag()).onLevelChanged();
1066     }
1067
1068     public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
1069         new BaseSearchIndexProvider() {
1070             @Override
1071             public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
1072                 final List<SearchIndexableRaw> result = new ArrayList<>();
1073                 final Resources res = context.getResources();
1074
1075                 // Add fragment title
1076                 SearchIndexableRaw data = new SearchIndexableRaw(context);
1077                 data.title = res.getString(R.string.wifi_settings);
1078                 data.screenTitle = res.getString(R.string.wifi_settings);
1079                 data.keywords = res.getString(R.string.keywords_wifi);
1080                 data.key = DATA_KEY_REFERENCE;
1081                 result.add(data);
1082
1083                 // Add saved Wi-Fi access points
1084                 final List<AccessPoint> accessPoints =
1085                         WifiTracker.getCurrentAccessPoints(context, true, false, false);
1086                 for (AccessPoint accessPoint : accessPoints) {
1087                     data = new SearchIndexableRaw(context);
1088                     data.title = accessPoint.getSsidStr();
1089                     data.screenTitle = res.getString(R.string.wifi_settings);
1090                     data.enabled = enabled;
1091                     result.add(data);
1092                 }
1093
1094                 return result;
1095             }
1096         };
1097
1098     /**
1099      * Returns true if the config is not editable through Settings.
1100      * @param context Context of caller
1101      * @param config The WiFi config.
1102      * @return true if the config is not editable through Settings.
1103      */
1104     static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) {
1105         return !canModifyNetwork(context, config);
1106     }
1107
1108     /**
1109      * This method is a stripped version of WifiConfigStore.canModifyNetwork.
1110      * TODO: refactor to have only one method.
1111      * @param context Context of caller
1112      * @param config The WiFi config.
1113      * @return true if Settings can modify the config.
1114      */
1115     static boolean canModifyNetwork(Context context, WifiConfiguration config) {
1116         if (config == null) {
1117             return true;
1118         }
1119
1120         final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(
1121                 Context.DEVICE_POLICY_SERVICE);
1122
1123         // Check if device has DPM capability. If it has and dpm is still null, then we
1124         // treat this case with suspicion and bail out.
1125         final PackageManager pm = context.getPackageManager();
1126         if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) {
1127             return false;
1128         }
1129
1130         boolean isConfigEligibleForLockdown = false;
1131         if (dpm != null) {
1132             final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser();
1133             if (deviceOwner != null) {
1134                 final int deviceOwnerUserId = dpm.getDeviceOwnerUserId();
1135                 try {
1136                     final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(),
1137                             deviceOwnerUserId);
1138                     isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid;
1139                 } catch (NameNotFoundException e) {
1140                     // don't care
1141                 }
1142             }
1143         }
1144         if (!isConfigEligibleForLockdown) {
1145             return true;
1146         }
1147
1148         final ContentResolver resolver = context.getContentResolver();
1149         final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver,
1150                 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0;
1151         return !isLockdownFeatureEnabled;
1152     }
1153
1154     private static class SummaryProvider
1155             implements SummaryLoader.SummaryProvider, OnSummaryChangeListener {
1156
1157         private final Context mContext;
1158         private final SummaryLoader mSummaryLoader;
1159
1160         @VisibleForTesting
1161         WifiSummaryUpdater mSummaryHelper;
1162
1163         public SummaryProvider(Context context, SummaryLoader summaryLoader) {
1164             mContext = context;
1165             mSummaryLoader = summaryLoader;
1166             mSummaryHelper = new WifiSummaryUpdater(mContext, this);
1167         }
1168
1169
1170         @Override
1171         public void setListening(boolean listening) {
1172             mSummaryHelper.register(listening);
1173         }
1174
1175         @Override
1176         public void onSummaryChanged(String summary) {
1177             mSummaryLoader.setSummary(this, summary);
1178         }
1179     }
1180
1181     public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
1182             = new SummaryLoader.SummaryProviderFactory() {
1183         @Override
1184         public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
1185                                                                    SummaryLoader summaryLoader) {
1186             return new SummaryProvider(activity, summaryLoader);
1187         }
1188     };
1189 }