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1 /**
2  * Copyright (C) 2014 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.phone.settings;
18 
19 import android.app.Dialog;
20 import android.content.DialogInterface;
21 import android.content.Intent;
22 import android.database.Cursor;
23 import android.os.AsyncResult;
24 import android.os.Bundle;
25 import android.os.Handler;
26 import android.os.Message;
27 import android.preference.CheckBoxPreference;
28 import android.preference.Preference;
29 import android.preference.PreferenceActivity;
30 import android.preference.PreferenceScreen;
31 import android.preference.SwitchPreference;
32 import android.provider.ContactsContract.CommonDataKinds;
33 import android.telecom.PhoneAccountHandle;
34 import android.text.BidiFormatter;
35 import android.text.TextDirectionHeuristics;
36 import android.text.TextUtils;
37 import android.util.Log;
38 import android.view.MenuItem;
39 import android.widget.ListAdapter;
40 import com.android.internal.telephony.CallForwardInfo;
41 import com.android.internal.telephony.Phone;
42 import com.android.internal.telephony.PhoneConstants;
43 import com.android.phone.EditPhoneNumberPreference;
44 import com.android.phone.PhoneGlobals;
45 import com.android.phone.PhoneUtils;
46 import com.android.phone.R;
47 import com.android.phone.SubscriptionInfoHelper;
48 import com.android.phone.vvm.omtp.OmtpConstants;
49 import com.android.phone.vvm.omtp.OmtpVvmCarrierConfigHelper;
50 import com.android.phone.vvm.omtp.VisualVoicemailPreferences;
51 import java.util.Collection;
52 import java.util.HashMap;
53 import java.util.HashSet;
54 import java.util.Iterator;
55 import java.util.Map;
56 
57 public class VoicemailSettingsActivity extends PreferenceActivity
58         implements DialogInterface.OnClickListener,
59                 Preference.OnPreferenceChangeListener,
60                 EditPhoneNumberPreference.OnDialogClosedListener,
61                 EditPhoneNumberPreference.GetDefaultNumberListener,
62                 VoicemailRingtonePreference.VoicemailRingtoneNameChangeListener {
63     private static final String LOG_TAG = VoicemailSettingsActivity.class.getSimpleName();
64     private static final boolean DBG = (PhoneGlobals.DBG_LEVEL >= 2);
65 
66     /**
67      * Intent action to bring up Voicemail Provider settings
68      * DO NOT RENAME. There are existing apps which use this intent value.
69      */
70     public static final String ACTION_ADD_VOICEMAIL =
71             "com.android.phone.CallFeaturesSetting.ADD_VOICEMAIL";
72 
73     /**
74      * Intent action to bring up the {@code VoicemailSettingsActivity}.
75      * DO NOT RENAME. There are existing apps which use this intent value.
76      */
77     public static final String ACTION_CONFIGURE_VOICEMAIL =
78             "com.android.phone.CallFeaturesSetting.CONFIGURE_VOICEMAIL";
79 
80     // Extra put in the return from VM provider config containing voicemail number to set
81     public static final String VM_NUMBER_EXTRA = "com.android.phone.VoicemailNumber";
82     // Extra put in the return from VM provider config containing call forwarding number to set
83     public static final String FWD_NUMBER_EXTRA = "com.android.phone.ForwardingNumber";
84     // Extra put in the return from VM provider config containing call forwarding number to set
85     public static final String FWD_NUMBER_TIME_EXTRA = "com.android.phone.ForwardingNumberTime";
86     // If the VM provider returns non null value in this extra we will force the user to
87     // choose another VM provider
88     public static final String SIGNOUT_EXTRA = "com.android.phone.Signout";
89 
90     /**
91      * String Extra put into ACTION_ADD_VOICEMAIL call to indicate which provider should be hidden
92      * in the list of providers presented to the user. This allows a provider which is being
93      * disabled (e.g. GV user logging out) to force the user to pick some other provider.
94      */
95     public static final String IGNORE_PROVIDER_EXTRA = "com.android.phone.ProviderToIgnore";
96 
97     /**
98      * String Extra put into ACTION_ADD_VOICEMAIL to indicate that the voicemail setup screen should
99      * be opened.
100      */
101     public static final String SETUP_VOICEMAIL_EXTRA = "com.android.phone.SetupVoicemail";
102 
103     // TODO: Define these preference keys in XML.
104     private static final String BUTTON_VOICEMAIL_KEY = "button_voicemail_key";
105     private static final String BUTTON_VOICEMAIL_PROVIDER_KEY = "button_voicemail_provider_key";
106     private static final String BUTTON_VOICEMAIL_SETTING_KEY = "button_voicemail_setting_key";
107 
108     /** Event for Async voicemail change call */
109     private static final int EVENT_VOICEMAIL_CHANGED        = 500;
110     private static final int EVENT_FORWARDING_CHANGED       = 501;
111     private static final int EVENT_FORWARDING_GET_COMPLETED = 502;
112 
113     /** Handle to voicemail pref */
114     private static final int VOICEMAIL_PREF_ID = 1;
115     private static final int VOICEMAIL_PROVIDER_CFG_ID = 2;
116 
117     /**
118      * Results of reading forwarding settings
119      */
120     private CallForwardInfo[] mForwardingReadResults = null;
121 
122     /**
123      * Result of forwarding number change.
124      * Keys are reasons (eg. unconditional forwarding).
125      */
126     private Map<Integer, AsyncResult> mForwardingChangeResults = null;
127 
128     /**
129      * Expected CF read result types.
130      * This set keeps track of the CF types for which we've issued change
131      * commands so we can tell when we've received all of the responses.
132      */
133     private Collection<Integer> mExpectedChangeResultReasons = null;
134 
135     /**
136      * Result of vm number change
137      */
138     private AsyncResult mVoicemailChangeResult = null;
139 
140     /**
141      * Previous VM provider setting so we can return to it in case of failure.
142      */
143     private String mPreviousVMProviderKey = null;
144 
145     /**
146      * Id of the dialog being currently shown.
147      */
148     private int mCurrentDialogId = 0;
149 
150     /**
151      * Flag indicating that we are invoking settings for the voicemail provider programmatically
152      * due to vm provider change.
153      */
154     private boolean mVMProviderSettingsForced = false;
155 
156     /**
157      * Flag indicating that we are making changes to vm or fwd numbers
158      * due to vm provider change.
159      */
160     private boolean mChangingVMorFwdDueToProviderChange = false;
161 
162     /**
163      * True if we are in the process of vm & fwd number change and vm has already been changed.
164      * This is used to decide what to do in case of rollback.
165      */
166     private boolean mVMChangeCompletedSuccessfully = false;
167 
168     /**
169      * True if we had full or partial failure setting forwarding numbers and so need to roll them
170      * back.
171      */
172     private boolean mFwdChangesRequireRollback = false;
173 
174     /**
175      * Id of error msg to display to user once we are done reverting the VM provider to the previous
176      * one.
177      */
178     private int mVMOrFwdSetError = 0;
179 
180     /** string to hold old voicemail number as it is being updated. */
181     private String mOldVmNumber;
182 
183     // New call forwarding settings and vm number we will be setting
184     // Need to save these since before we get to saving we need to asynchronously
185     // query the existing forwarding settings.
186     private CallForwardInfo[] mNewFwdSettings;
187     private String mNewVMNumber;
188 
189     private CharSequence mOldVmRingtoneName = "";
190 
191     /**
192      * Used to indicate that the voicemail preference should be shown.
193      */
194     private boolean mShowVoicemailPreference = false;
195 
196     private boolean mForeground;
197     private Phone mPhone;
198     private PhoneAccountHandle mPhoneAccountHandle;
199     private SubscriptionInfoHelper mSubscriptionInfoHelper;
200     private OmtpVvmCarrierConfigHelper mOmtpVvmCarrierConfigHelper;
201 
202     private EditPhoneNumberPreference mSubMenuVoicemailSettings;
203     private VoicemailProviderListPreference mVoicemailProviders;
204     private PreferenceScreen mVoicemailSettings;
205     private VoicemailRingtonePreference mVoicemailNotificationRingtone;
206     private CheckBoxPreference mVoicemailNotificationVibrate;
207     private SwitchPreference mVoicemailVisualVoicemail;
208     private Preference mVoicemailChangePinPreference;
209 
210     //*********************************************************************************************
211     // Preference Activity Methods
212     //*********************************************************************************************
213 
214     @Override
onCreate(Bundle icicle)215     protected void onCreate(Bundle icicle) {
216         super.onCreate(icicle);
217 
218         // Show the voicemail preference in onResume if the calling intent specifies the
219         // ACTION_ADD_VOICEMAIL action.
220         mShowVoicemailPreference = (icicle == null) &&
221                 TextUtils.equals(getIntent().getAction(), ACTION_ADD_VOICEMAIL);
222 
223         mSubscriptionInfoHelper = new SubscriptionInfoHelper(this, getIntent());
224         mSubscriptionInfoHelper.setActionBarTitle(
225                 getActionBar(), getResources(), R.string.voicemail_settings_with_label);
226         mPhone = mSubscriptionInfoHelper.getPhone();
227         mPhoneAccountHandle = PhoneUtils.makePstnPhoneAccountHandle(mPhone);
228         mOmtpVvmCarrierConfigHelper = new OmtpVvmCarrierConfigHelper(
229                 mPhone.getContext(), mPhone.getSubId());
230     }
231 
232     @Override
onResume()233     protected void onResume() {
234         super.onResume();
235         mForeground = true;
236 
237         PreferenceScreen preferenceScreen = getPreferenceScreen();
238         if (preferenceScreen != null) {
239             preferenceScreen.removeAll();
240         }
241 
242         addPreferencesFromResource(R.xml.voicemail_settings);
243 
244         PreferenceScreen prefSet = getPreferenceScreen();
245         mSubMenuVoicemailSettings = (EditPhoneNumberPreference) findPreference(BUTTON_VOICEMAIL_KEY);
246         mSubMenuVoicemailSettings.setParentActivity(this, VOICEMAIL_PREF_ID, this);
247         mSubMenuVoicemailSettings.setDialogOnClosedListener(this);
248         mSubMenuVoicemailSettings.setDialogTitle(R.string.voicemail_settings_number_label);
249 
250         mVoicemailProviders = (VoicemailProviderListPreference) findPreference(
251                 BUTTON_VOICEMAIL_PROVIDER_KEY);
252         mVoicemailProviders.init(mPhone, getIntent());
253         mVoicemailProviders.setOnPreferenceChangeListener(this);
254         mPreviousVMProviderKey = mVoicemailProviders.getValue();
255 
256         mVoicemailSettings = (PreferenceScreen) findPreference(BUTTON_VOICEMAIL_SETTING_KEY);
257 
258         mVoicemailNotificationRingtone = (VoicemailRingtonePreference) findPreference(
259                 getResources().getString(R.string.voicemail_notification_ringtone_key));
260         mVoicemailNotificationRingtone.setVoicemailRingtoneNameChangeListener(this);
261         mVoicemailNotificationRingtone.init(mPhone, mOldVmRingtoneName);
262 
263         mVoicemailNotificationVibrate = (CheckBoxPreference) findPreference(
264                 getResources().getString(R.string.voicemail_notification_vibrate_key));
265         mVoicemailNotificationVibrate.setOnPreferenceChangeListener(this);
266 
267         mVoicemailVisualVoicemail = (SwitchPreference) findPreference(
268                 getResources().getString(R.string.voicemail_visual_voicemail_key));
269 
270         mVoicemailChangePinPreference = findPreference(
271                 getResources().getString(R.string.voicemail_change_pin_key));
272         Intent changePinIntent = new Intent(new Intent(this, VoicemailChangePinActivity.class));
273         changePinIntent.putExtra(VoicemailChangePinActivity.EXTRA_PHONE_ACCOUNT_HANDLE,
274                 mPhoneAccountHandle);
275 
276         mVoicemailChangePinPreference.setIntent(changePinIntent);
277         if (VoicemailChangePinActivity.isDefaultOldPinSet(this, mPhoneAccountHandle)) {
278             mVoicemailChangePinPreference.setTitle(R.string.voicemail_set_pin_dialog_title);
279         } else {
280             mVoicemailChangePinPreference.setTitle(R.string.voicemail_change_pin_dialog_title);
281         }
282 
283         if (mOmtpVvmCarrierConfigHelper.isValid()) {
284             mVoicemailVisualVoicemail.setOnPreferenceChangeListener(this);
285             mVoicemailVisualVoicemail.setChecked(
286                     VisualVoicemailSettingsUtil.isEnabled(this, mPhoneAccountHandle));
287             if (!isVisualVoicemailActivated()) {
288                 prefSet.removePreference(mVoicemailChangePinPreference);
289             }
290         } else {
291             prefSet.removePreference(mVoicemailVisualVoicemail);
292             prefSet.removePreference(mVoicemailChangePinPreference);
293         }
294 
295         updateVMPreferenceWidgets(mVoicemailProviders.getValue());
296 
297         // check the intent that started this activity and pop up the voicemail
298         // dialog if we've been asked to.
299         // If we have at least one non default VM provider registered then bring up
300         // the selection for the VM provider, otherwise bring up a VM number dialog.
301         // We only bring up the dialog the first time we are called (not after orientation change)
302         if (mShowVoicemailPreference) {
303             if (DBG) log("ACTION_ADD_VOICEMAIL Intent is thrown");
304             if (mVoicemailProviders.hasMoreThanOneVoicemailProvider()) {
305                 if (DBG) log("Voicemail data has more than one provider.");
306                 simulatePreferenceClick(mVoicemailProviders);
307             } else {
308                 onPreferenceChange(mVoicemailProviders, VoicemailProviderListPreference.DEFAULT_KEY);
309                 mVoicemailProviders.setValue(VoicemailProviderListPreference.DEFAULT_KEY);
310             }
311             mShowVoicemailPreference = false;
312         }
313 
314         updateVoiceNumberField();
315         mVMProviderSettingsForced = false;
316 
317         mVoicemailNotificationVibrate.setChecked(
318                 VoicemailNotificationSettingsUtil.isVibrationEnabled(mPhone));
319     }
320 
321     @Override
onPause()322     public void onPause() {
323         super.onPause();
324         mForeground = false;
325     }
326 
327     @Override
onOptionsItemSelected(MenuItem item)328     public boolean onOptionsItemSelected(MenuItem item) {
329         if (item.getItemId() == android.R.id.home) {
330             onBackPressed();
331             return true;
332         }
333         return super.onOptionsItemSelected(item);
334     }
335 
336     @Override
onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference)337     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
338         if (preference == mSubMenuVoicemailSettings) {
339             return true;
340         } else if (preference.getKey().equals(mVoicemailSettings.getKey())) {
341             // Check key instead of comparing reference because closing the voicemail notification
342             // ringtone dialog invokes onResume(), but leaves the old preference screen up,
343             // TODO: Revert to checking reference after migrating voicemail to its own activity.
344             if (DBG) log("onPreferenceTreeClick: Voicemail Settings Preference is clicked.");
345 
346             final Dialog dialog = ((PreferenceScreen) preference).getDialog();
347             if (dialog != null) {
348                 dialog.getActionBar().setDisplayHomeAsUpEnabled(false);
349             }
350 
351             if (preference.getIntent() != null) {
352                 if (DBG) log("Invoking cfg intent " + preference.getIntent().getPackage());
353 
354                 // onActivityResult() will be responsible for resetting some of variables.
355                 this.startActivityForResult(preference.getIntent(), VOICEMAIL_PROVIDER_CFG_ID);
356                 return true;
357             } else {
358                 if (DBG) log("onPreferenceTreeClick(). No intent; use default behavior in xml.");
359 
360                 // onActivityResult() will not be called, so reset variables here.
361                 mPreviousVMProviderKey = VoicemailProviderListPreference.DEFAULT_KEY;
362                 mVMProviderSettingsForced = false;
363                 return false;
364             }
365         }
366         return false;
367     }
368 
369     /**
370      * Implemented to support onPreferenceChangeListener to look for preference changes.
371      *
372      * @param preference is the preference to be changed
373      * @param objValue should be the value of the selection, NOT its localized
374      * display value.
375      */
376     @Override
onPreferenceChange(Preference preference, Object objValue)377     public boolean onPreferenceChange(Preference preference, Object objValue) {
378         if (DBG) log("onPreferenceChange: \"" + preference + "\" changed to \"" + objValue + "\"");
379 
380         if (preference == mVoicemailProviders) {
381             final String newProviderKey = (String) objValue;
382 
383             // If previous provider key and the new one is same, we don't need to handle it.
384             if (mPreviousVMProviderKey.equals(newProviderKey)) {
385                 if (DBG) log("No change is made to the VM provider setting.");
386                 return true;
387             }
388             updateVMPreferenceWidgets(newProviderKey);
389 
390             final VoicemailProviderSettings newProviderSettings =
391                     VoicemailProviderSettingsUtil.load(this, newProviderKey);
392 
393             // If the user switches to a voice mail provider and we have numbers stored for it we
394             // will automatically change the phone's voice mail and forwarding number to the stored
395             // ones. Otherwise we will bring up provider's configuration UI.
396             if (newProviderSettings == null) {
397                 // Force the user into a configuration of the chosen provider
398                 Log.w(LOG_TAG, "Saved preferences not found - invoking config");
399                 mVMProviderSettingsForced = true;
400                 simulatePreferenceClick(mVoicemailSettings);
401             } else {
402                 if (DBG) log("Saved preferences found - switching to them");
403                 // Set this flag so if we get a failure we revert to previous provider
404                 mChangingVMorFwdDueToProviderChange = true;
405                 saveVoiceMailAndForwardingNumber(newProviderKey, newProviderSettings);
406             }
407         } else if (preference.getKey().equals(mVoicemailNotificationVibrate.getKey())) {
408             // Check key instead of comparing reference because closing the voicemail notification
409             // ringtone dialog invokes onResume(), but leaves the old preference screen up,
410             // TODO: Revert to checking reference after migrating voicemail to its own activity.
411             VoicemailNotificationSettingsUtil.setVibrationEnabled(
412                     mPhone, Boolean.TRUE.equals(objValue));
413         } else if (preference.getKey().equals(mVoicemailVisualVoicemail.getKey())) {
414             boolean isEnabled = (boolean) objValue;
415             VisualVoicemailSettingsUtil
416                     .setEnabled(mPhone.getContext(), mPhoneAccountHandle, isEnabled);
417             PreferenceScreen prefSet = getPreferenceScreen();
418             if (isVisualVoicemailActivated()) {
419                 prefSet.addPreference(mVoicemailChangePinPreference);
420             } else {
421                 prefSet.removePreference(mVoicemailChangePinPreference);
422             }
423         }
424 
425         // Always let the preference setting proceed.
426         return true;
427     }
428 
429     /**
430      * Implemented for EditPhoneNumberPreference.GetDefaultNumberListener.
431      * This method set the default values for the various
432      * EditPhoneNumberPreference dialogs.
433      */
434     @Override
onGetDefaultNumber(EditPhoneNumberPreference preference)435     public String onGetDefaultNumber(EditPhoneNumberPreference preference) {
436         if (preference == mSubMenuVoicemailSettings) {
437             // update the voicemail number field, which takes care of the
438             // mSubMenuVoicemailSettings itself, so we should return null.
439             if (DBG) log("updating default for voicemail dialog");
440             updateVoiceNumberField();
441             return null;
442         }
443 
444         String vmDisplay = mPhone.getVoiceMailNumber();
445         if (TextUtils.isEmpty(vmDisplay)) {
446             // if there is no voicemail number, we just return null to
447             // indicate no contribution.
448             return null;
449         }
450 
451         // Return the voicemail number prepended with "VM: "
452         if (DBG) log("updating default for call forwarding dialogs");
453         return getString(R.string.voicemail_abbreviated) + " " + vmDisplay;
454     }
455 
456     @Override
onActivityResult(int requestCode, int resultCode, Intent data)457     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
458         if (DBG) {
459             log("onActivityResult: requestCode: " + requestCode
460                     + ", resultCode: " + resultCode
461                     + ", data: " + data);
462         }
463 
464         // there are cases where the contact picker may end up sending us more than one
465         // request.  We want to ignore the request if we're not in the correct state.
466         if (requestCode == VOICEMAIL_PROVIDER_CFG_ID) {
467             boolean failure = false;
468 
469             // No matter how the processing of result goes lets clear the flag
470             if (DBG) log("mVMProviderSettingsForced: " + mVMProviderSettingsForced);
471             final boolean isVMProviderSettingsForced = mVMProviderSettingsForced;
472             mVMProviderSettingsForced = false;
473 
474             String vmNum = null;
475             if (resultCode != RESULT_OK) {
476                 if (DBG) log("onActivityResult: vm provider cfg result not OK.");
477                 failure = true;
478             } else {
479                 if (data == null) {
480                     if (DBG) log("onActivityResult: vm provider cfg result has no data");
481                     failure = true;
482                 } else {
483                     if (data.getBooleanExtra(SIGNOUT_EXTRA, false)) {
484                         if (DBG) log("Provider requested signout");
485                         if (isVMProviderSettingsForced) {
486                             if (DBG) log("Going back to previous provider on signout");
487                             switchToPreviousVoicemailProvider();
488                         } else {
489                             final String victim = mVoicemailProviders.getKey();
490                             if (DBG) log("Relaunching activity and ignoring " + victim);
491                             Intent i = new Intent(ACTION_ADD_VOICEMAIL);
492                             i.putExtra(IGNORE_PROVIDER_EXTRA, victim);
493                             i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
494                             this.startActivity(i);
495                         }
496                         return;
497                     }
498                     vmNum = data.getStringExtra(VM_NUMBER_EXTRA);
499                     if (vmNum == null || vmNum.length() == 0) {
500                         if (DBG) log("onActivityResult: vm provider cfg result has no vmnum");
501                         failure = true;
502                     }
503                 }
504             }
505             if (failure) {
506                 if (DBG) log("Failure in return from voicemail provider.");
507                 if (isVMProviderSettingsForced) {
508                     switchToPreviousVoicemailProvider();
509                 }
510 
511                 return;
512             }
513             mChangingVMorFwdDueToProviderChange = isVMProviderSettingsForced;
514             final String fwdNum = data.getStringExtra(FWD_NUMBER_EXTRA);
515 
516             // TODO: It would be nice to load the current network setting for this and
517             // send it to the provider when it's config is invoked so it can use this as default
518             final int fwdNumTime = data.getIntExtra(FWD_NUMBER_TIME_EXTRA, 20);
519 
520             if (DBG) log("onActivityResult: cfg result has forwarding number " + fwdNum);
521             saveVoiceMailAndForwardingNumber(mVoicemailProviders.getKey(),
522                     new VoicemailProviderSettings(vmNum, fwdNum, fwdNumTime));
523             return;
524         }
525 
526         if (requestCode == VOICEMAIL_PREF_ID) {
527             if (resultCode != RESULT_OK) {
528                 if (DBG) log("onActivityResult: contact picker result not OK.");
529                 return;
530             }
531 
532             Cursor cursor = null;
533             try {
534                 cursor = getContentResolver().query(data.getData(),
535                     new String[] { CommonDataKinds.Phone.NUMBER }, null, null, null);
536                 if ((cursor == null) || (!cursor.moveToFirst())) {
537                     if (DBG) log("onActivityResult: bad contact data, no results found.");
538                     return;
539                 }
540                 if (mSubMenuVoicemailSettings != null) {
541                     mSubMenuVoicemailSettings.onPickActivityResult(cursor.getString(0));
542                 } else {
543                     Log.w(LOG_TAG, "VoicemailSettingsActivity destroyed while setting contacts.");
544                 }
545                 return;
546             } finally {
547                 if (cursor != null) {
548                     cursor.close();
549                 }
550             }
551         }
552 
553         super.onActivityResult(requestCode, resultCode, data);
554     }
555 
556     @Override
onVoicemailRingtoneNameChanged(CharSequence name)557     public void onVoicemailRingtoneNameChanged(CharSequence name) {
558         mOldVmRingtoneName = name;
559     }
560 
561     /**
562      * Simulates user clicking on a passed preference.
563      * Usually needed when the preference is a dialog preference and we want to invoke
564      * a dialog for this preference programmatically.
565      * TODO: figure out if there is a cleaner way to cause preference dlg to come up
566      */
simulatePreferenceClick(Preference preference)567     private void simulatePreferenceClick(Preference preference) {
568         // Go through settings until we find our setting
569         // and then simulate a click on it to bring up the dialog
570         final ListAdapter adapter = getPreferenceScreen().getRootAdapter();
571         for (int idx = 0; idx < adapter.getCount(); idx++) {
572             if (adapter.getItem(idx) == preference) {
573                 getPreferenceScreen().onItemClick(this.getListView(),
574                         null, idx, adapter.getItemId(idx));
575                 break;
576             }
577         }
578     }
579 
580 
581     //*********************************************************************************************
582     // Activity Dialog Methods
583     //*********************************************************************************************
584 
585     @Override
onPrepareDialog(int id, Dialog dialog)586     protected void onPrepareDialog(int id, Dialog dialog) {
587         super.onPrepareDialog(id, dialog);
588         mCurrentDialogId = id;
589     }
590 
591     // dialog creation method, called by showDialog()
592     @Override
onCreateDialog(int dialogId)593     protected Dialog onCreateDialog(int dialogId) {
594         return VoicemailDialogUtil.getDialog(this, dialogId);
595     }
596 
597     @Override
onDialogClosed(EditPhoneNumberPreference preference, int buttonClicked)598     public void onDialogClosed(EditPhoneNumberPreference preference, int buttonClicked) {
599         if (DBG) log("onDialogClosed: Button clicked is " + buttonClicked);
600 
601         if (buttonClicked == DialogInterface.BUTTON_NEGATIVE) {
602             return;
603         }
604 
605         if (preference == mSubMenuVoicemailSettings) {
606             VoicemailProviderSettings newSettings = new VoicemailProviderSettings(
607                     mSubMenuVoicemailSettings.getPhoneNumber(),
608                     VoicemailProviderSettings.NO_FORWARDING);
609             saveVoiceMailAndForwardingNumber(mVoicemailProviders.getKey(), newSettings);
610         }
611     }
612 
613     /**
614      * Wrapper around showDialog() that will silently do nothing if we're
615      * not in the foreground.
616      *
617      * This is useful here because most of the dialogs we display from
618      * this class are triggered by asynchronous events (like
619      * success/failure messages from the telephony layer) and it's
620      * possible for those events to come in even after the user has gone
621      * to a different screen.
622      */
623     // TODO: this is too brittle: it's still easy to accidentally add new
624     // code here that calls showDialog() directly (which will result in a
625     // WindowManager$BadTokenException if called after the activity has
626     // been stopped.)
627     //
628     // It would be cleaner to do the "if (mForeground)" check in one
629     // central place, maybe by using a single Handler for all asynchronous
630     // events (and have *that* discard events if we're not in the
631     // foreground.)
632     //
633     // Unfortunately it's not that simple, since we sometimes need to do
634     // actual work to handle these events whether or not we're in the
635     // foreground (see the Handler code in mSetOptionComplete for
636     // example.)
637     //
638     // TODO: It's a bit worrisome that we don't do anything in error cases when we're not in the
639     // foreground. Consider displaying a toast instead.
showDialogIfForeground(int id)640     private void showDialogIfForeground(int id) {
641         if (mForeground) {
642             showDialog(id);
643         }
644     }
645 
dismissDialogSafely(int id)646     private void dismissDialogSafely(int id) {
647         try {
648             dismissDialog(id);
649         } catch (IllegalArgumentException e) {
650             // This is expected in the case where we were in the background
651             // at the time we would normally have shown the dialog, so we didn't
652             // show it.
653         }
654     }
655 
656     // This is a method implemented for DialogInterface.OnClickListener.
657     // Used with the error dialog to close the app, voicemail dialog to just dismiss.
658     // Close button is mapped to BUTTON_POSITIVE for the errors that close the activity,
659     // while those that are mapped to BUTTON_NEUTRAL only move the preference focus.
onClick(DialogInterface dialog, int which)660     public void onClick(DialogInterface dialog, int which) {
661         if (DBG) log("onClick: button clicked is " + which);
662 
663         dialog.dismiss();
664         switch (which){
665             case DialogInterface.BUTTON_NEGATIVE:
666                 if (mCurrentDialogId == VoicemailDialogUtil.FWD_GET_RESPONSE_ERROR_DIALOG) {
667                     // We failed to get current forwarding settings and the user
668                     // does not wish to continue.
669                     switchToPreviousVoicemailProvider();
670                 }
671                 break;
672             case DialogInterface.BUTTON_POSITIVE:
673                 if (mCurrentDialogId == VoicemailDialogUtil.FWD_GET_RESPONSE_ERROR_DIALOG) {
674                     // We failed to get current forwarding settings but the user
675                     // wishes to continue changing settings to the new vm provider
676                     setVoicemailNumberWithCarrier();
677                 } else {
678                     finish();
679                 }
680                 return;
681             default:
682                 // just let the dialog close and go back to the input
683         }
684 
685         // In all dialogs, all buttons except BUTTON_POSITIVE lead to the end of user interaction
686         // with settings UI. If we were called to explicitly configure voice mail then
687         // we finish the settings activity here to come back to whatever the user was doing.
688         final String action = getIntent() != null ? getIntent().getAction() : null;
689         if (ACTION_ADD_VOICEMAIL.equals(action)) {
690             finish();
691         }
692     }
693 
694 
695     //*********************************************************************************************
696     // Voicemail Methods
697     //*********************************************************************************************
698 
699     /**
700      * TODO: Refactor to make it easier to understand what's done in the different stages.
701      */
saveVoiceMailAndForwardingNumber( String key, VoicemailProviderSettings newSettings)702     private void saveVoiceMailAndForwardingNumber(
703             String key, VoicemailProviderSettings newSettings) {
704         if (DBG) log("saveVoiceMailAndForwardingNumber: " + newSettings.toString());
705         mNewVMNumber = newSettings.getVoicemailNumber();
706         mNewVMNumber = (mNewVMNumber == null) ? "" : mNewVMNumber;
707         mNewFwdSettings = newSettings.getForwardingSettings();
708 
709         // Call forwarding is not suppported on CDMA.
710         if (mPhone.getPhoneType() == PhoneConstants.PHONE_TYPE_CDMA) {
711             if (DBG) log("Ignoring forwarding setting since this is CDMA phone");
712             mNewFwdSettings = VoicemailProviderSettings.NO_FORWARDING;
713         }
714 
715         // Throw a warning if the voicemail is the same and we did not change forwarding.
716         if (mNewVMNumber.equals(mOldVmNumber)
717                 && mNewFwdSettings == VoicemailProviderSettings.NO_FORWARDING) {
718             showDialogIfForeground(VoicemailDialogUtil.VM_NOCHANGE_ERROR_DIALOG);
719             return;
720         }
721 
722         VoicemailProviderSettingsUtil.save(this, key, newSettings);
723         mVMChangeCompletedSuccessfully = false;
724         mFwdChangesRequireRollback = false;
725         mVMOrFwdSetError = 0;
726 
727         if (mNewFwdSettings == VoicemailProviderSettings.NO_FORWARDING
728                 || key.equals(mPreviousVMProviderKey)) {
729             if (DBG) log("Set voicemail number. No changes to forwarding number.");
730             setVoicemailNumberWithCarrier();
731         } else {
732             if (DBG) log("Reading current forwarding settings.");
733             int numSettingsReasons = VoicemailProviderSettings.FORWARDING_SETTINGS_REASONS.length;
734             mForwardingReadResults = new CallForwardInfo[numSettingsReasons];
735             for (int i = 0; i < mForwardingReadResults.length; i++) {
736                 mPhone.getCallForwardingOption(
737                         VoicemailProviderSettings.FORWARDING_SETTINGS_REASONS[i],
738                         mGetOptionComplete.obtainMessage(EVENT_FORWARDING_GET_COMPLETED, i, 0));
739             }
740             showDialogIfForeground(VoicemailDialogUtil.VM_FWD_READING_DIALOG);
741         }
742     }
743 
744     private final Handler mGetOptionComplete = new Handler() {
745         @Override
746         public void handleMessage(Message msg) {
747             AsyncResult result = (AsyncResult) msg.obj;
748             switch (msg.what) {
749                 case EVENT_FORWARDING_GET_COMPLETED:
750                     handleForwardingSettingsReadResult(result, msg.arg1);
751                     break;
752             }
753         }
754     };
755 
handleForwardingSettingsReadResult(AsyncResult ar, int idx)756     private void handleForwardingSettingsReadResult(AsyncResult ar, int idx) {
757         if (DBG) Log.d(LOG_TAG, "handleForwardingSettingsReadResult: " + idx);
758 
759         Throwable error = null;
760         if (ar.exception != null) {
761             error = ar.exception;
762             if (DBG) Log.d(LOG_TAG, "FwdRead: ar.exception=" + error.getMessage());
763         }
764         if (ar.userObj instanceof Throwable) {
765             error = (Throwable) ar.userObj;
766             if (DBG) Log.d(LOG_TAG, "FwdRead: userObj=" + error.getMessage());
767         }
768 
769         // We may have already gotten an error and decided to ignore the other results.
770         if (mForwardingReadResults == null) {
771             if (DBG) Log.d(LOG_TAG, "Ignoring fwd reading result: " + idx);
772             return;
773         }
774 
775         // In case of error ignore other results, show an error dialog
776         if (error != null) {
777             if (DBG) Log.d(LOG_TAG, "Error discovered for fwd read : " + idx);
778             mForwardingReadResults = null;
779             dismissDialogSafely(VoicemailDialogUtil.VM_FWD_READING_DIALOG);
780             showDialogIfForeground(VoicemailDialogUtil.FWD_GET_RESPONSE_ERROR_DIALOG);
781             return;
782         }
783 
784         // Get the forwarding info.
785         mForwardingReadResults[idx] = CallForwardInfoUtil.getCallForwardInfo(
786                 (CallForwardInfo[]) ar.result,
787                 VoicemailProviderSettings.FORWARDING_SETTINGS_REASONS[idx]);
788 
789         // Check if we got all the results already
790         boolean done = true;
791         for (int i = 0; i < mForwardingReadResults.length; i++) {
792             if (mForwardingReadResults[i] == null) {
793                 done = false;
794                 break;
795             }
796         }
797 
798         if (done) {
799             if (DBG) Log.d(LOG_TAG, "Done receiving fwd info");
800             dismissDialogSafely(VoicemailDialogUtil.VM_FWD_READING_DIALOG);
801 
802             if (mPreviousVMProviderKey.equals(VoicemailProviderListPreference.DEFAULT_KEY)) {
803                 VoicemailProviderSettingsUtil.save(mPhone.getContext(),
804                         VoicemailProviderListPreference.DEFAULT_KEY,
805                         new VoicemailProviderSettings(mOldVmNumber, mForwardingReadResults));
806             }
807             saveVoiceMailAndForwardingNumberStage2();
808         }
809     }
810 
resetForwardingChangeState()811     private void resetForwardingChangeState() {
812         mForwardingChangeResults = new HashMap<Integer, AsyncResult>();
813         mExpectedChangeResultReasons = new HashSet<Integer>();
814     }
815 
816     // Called after we are done saving the previous forwarding settings if we needed.
saveVoiceMailAndForwardingNumberStage2()817     private void saveVoiceMailAndForwardingNumberStage2() {
818         mForwardingChangeResults = null;
819         mVoicemailChangeResult = null;
820 
821         resetForwardingChangeState();
822         for (int i = 0; i < mNewFwdSettings.length; i++) {
823             CallForwardInfo fi = mNewFwdSettings[i];
824             CallForwardInfo fiForReason =
825                     CallForwardInfoUtil.infoForReason(mForwardingReadResults, fi.reason);
826             final boolean doUpdate = CallForwardInfoUtil.isUpdateRequired(fiForReason, fi);
827 
828             if (doUpdate) {
829                 if (DBG) log("Setting fwd #: " + i + ": " + fi.toString());
830                 mExpectedChangeResultReasons.add(i);
831 
832                 CallForwardInfoUtil.setCallForwardingOption(mPhone, fi,
833                         mSetOptionComplete.obtainMessage(
834                                 EVENT_FORWARDING_CHANGED, fi.reason, 0));
835             }
836         }
837         showDialogIfForeground(VoicemailDialogUtil.VM_FWD_SAVING_DIALOG);
838     }
839 
840 
841     /**
842      * Callback to handle option update completions
843      */
844     private final Handler mSetOptionComplete = new Handler() {
845         @Override
846         public void handleMessage(Message msg) {
847             AsyncResult result = (AsyncResult) msg.obj;
848             boolean done = false;
849             switch (msg.what) {
850                 case EVENT_VOICEMAIL_CHANGED:
851                     mVoicemailChangeResult = result;
852                     mVMChangeCompletedSuccessfully = isVmChangeSuccess();
853                     PhoneGlobals.getInstance().refreshMwiIndicator(
854                             mSubscriptionInfoHelper.getSubId());
855                     done = true;
856                     break;
857                 case EVENT_FORWARDING_CHANGED:
858                     mForwardingChangeResults.put(msg.arg1, result);
859                     if (result.exception != null) {
860                         Log.w(LOG_TAG, "Error in setting fwd# " + msg.arg1 + ": " +
861                                 result.exception.getMessage());
862                     }
863                     if (isForwardingCompleted()) {
864                         if (isFwdChangeSuccess()) {
865                             if (DBG) log("Overall fwd changes completed ok, starting vm change");
866                             setVoicemailNumberWithCarrier();
867                         } else {
868                             Log.w(LOG_TAG, "Overall fwd changes completed in failure. " +
869                                     "Check if we need to try rollback for some settings.");
870                             mFwdChangesRequireRollback = false;
871                             Iterator<Map.Entry<Integer,AsyncResult>> it =
872                                 mForwardingChangeResults.entrySet().iterator();
873                             while (it.hasNext()) {
874                                 Map.Entry<Integer,AsyncResult> entry = it.next();
875                                 if (entry.getValue().exception == null) {
876                                     // If at least one succeeded we have to revert
877                                     Log.i(LOG_TAG, "Rollback will be required");
878                                     mFwdChangesRequireRollback = true;
879                                     break;
880                                 }
881                             }
882                             if (!mFwdChangesRequireRollback) {
883                                 Log.i(LOG_TAG, "No rollback needed.");
884                             }
885                             done = true;
886                         }
887                     }
888                     break;
889                 default:
890                     // TODO: should never reach this, may want to throw exception
891             }
892 
893             if (done) {
894                 if (DBG) log("All VM provider related changes done");
895                 if (mForwardingChangeResults != null) {
896                     dismissDialogSafely(VoicemailDialogUtil.VM_FWD_SAVING_DIALOG);
897                 }
898                 handleSetVmOrFwdMessage();
899             }
900         }
901     };
902 
903     /**
904      * Callback to handle option revert completions
905      */
906     private final Handler mRevertOptionComplete = new Handler() {
907         @Override
908         public void handleMessage(Message msg) {
909             AsyncResult result = (AsyncResult) msg.obj;
910             switch (msg.what) {
911                 case EVENT_VOICEMAIL_CHANGED:
912                     if (DBG) log("VM revert complete msg");
913                     mVoicemailChangeResult = result;
914                     break;
915 
916                 case EVENT_FORWARDING_CHANGED:
917                     if (DBG) log("FWD revert complete msg ");
918                     mForwardingChangeResults.put(msg.arg1, result);
919                     if (result.exception != null) {
920                         if (DBG) log("Error in reverting fwd# " + msg.arg1 + ": " +
921                                 result.exception.getMessage());
922                     }
923                     break;
924 
925                 default:
926                     // TODO: should never reach this, may want to throw exception
927             }
928 
929             final boolean done = (!mVMChangeCompletedSuccessfully || mVoicemailChangeResult != null)
930                     && (!mFwdChangesRequireRollback || isForwardingCompleted());
931             if (done) {
932                 if (DBG) log("All VM reverts done");
933                 dismissDialogSafely(VoicemailDialogUtil.VM_REVERTING_DIALOG);
934                 onRevertDone();
935             }
936         }
937     };
938 
setVoicemailNumberWithCarrier()939     private void setVoicemailNumberWithCarrier() {
940         if (DBG) log("save voicemail #: " + mNewVMNumber);
941 
942         mVoicemailChangeResult = null;
943         mPhone.setVoiceMailNumber(
944                 mPhone.getVoiceMailAlphaTag().toString(),
945                 mNewVMNumber,
946                 Message.obtain(mSetOptionComplete, EVENT_VOICEMAIL_CHANGED));
947     }
948 
switchToPreviousVoicemailProvider()949     private void switchToPreviousVoicemailProvider() {
950         if (DBG) log("switchToPreviousVoicemailProvider " + mPreviousVMProviderKey);
951 
952         if (mPreviousVMProviderKey == null) {
953             return;
954         }
955 
956         if (mVMChangeCompletedSuccessfully || mFwdChangesRequireRollback) {
957             showDialogIfForeground(VoicemailDialogUtil.VM_REVERTING_DIALOG);
958             final VoicemailProviderSettings prevSettings =
959                     VoicemailProviderSettingsUtil.load(this, mPreviousVMProviderKey);
960             if (prevSettings == null) {
961                 Log.e(LOG_TAG, "VoicemailProviderSettings for the key \""
962                         + mPreviousVMProviderKey + "\" is null but should be loaded.");
963                 return;
964             }
965 
966             if (mVMChangeCompletedSuccessfully) {
967                 mNewVMNumber = prevSettings.getVoicemailNumber();
968                 Log.i(LOG_TAG, "VM change is already completed successfully."
969                         + "Have to revert VM back to " + mNewVMNumber + " again.");
970                 mPhone.setVoiceMailNumber(
971                         mPhone.getVoiceMailAlphaTag().toString(),
972                         mNewVMNumber,
973                         Message.obtain(mRevertOptionComplete, EVENT_VOICEMAIL_CHANGED));
974             }
975 
976             if (mFwdChangesRequireRollback) {
977                 Log.i(LOG_TAG, "Requested to rollback forwarding changes.");
978 
979                 final CallForwardInfo[] prevFwdSettings = prevSettings.getForwardingSettings();
980                 if (prevFwdSettings != null) {
981                     Map<Integer, AsyncResult> results = mForwardingChangeResults;
982                     resetForwardingChangeState();
983                     for (int i = 0; i < prevFwdSettings.length; i++) {
984                         CallForwardInfo fi = prevFwdSettings[i];
985                         if (DBG) log("Reverting fwd #: " + i + ": " + fi.toString());
986                         // Only revert the settings for which the update succeeded.
987                         AsyncResult result = results.get(fi.reason);
988                         if (result != null && result.exception == null) {
989                             mExpectedChangeResultReasons.add(fi.reason);
990                             CallForwardInfoUtil.setCallForwardingOption(mPhone, fi,
991                                     mRevertOptionComplete.obtainMessage(
992                                             EVENT_FORWARDING_CHANGED, i, 0));
993                         }
994                     }
995                 }
996             }
997         } else {
998             if (DBG) log("No need to revert");
999             onRevertDone();
1000         }
1001     }
1002 
1003 
1004     //*********************************************************************************************
1005     // Voicemail Handler Helpers
1006     //*********************************************************************************************
1007 
1008     /**
1009      * Updates the look of the VM preference widgets based on current VM provider settings.
1010      * Note that the provider name is loaded fxrorm the found activity via loadLabel in
1011      * {@link VoicemailProviderListPreference#initVoiceMailProviders()} in order for it to be
1012      * localizable.
1013      */
updateVMPreferenceWidgets(String currentProviderSetting)1014     private void updateVMPreferenceWidgets(String currentProviderSetting) {
1015         final String key = currentProviderSetting;
1016         final VoicemailProviderListPreference.VoicemailProvider provider =
1017                 mVoicemailProviders.getVoicemailProvider(key);
1018 
1019         /* This is the case when we are coming up on a freshly wiped phone and there is no
1020          persisted value for the list preference mVoicemailProviders.
1021          In this case we want to show the UI asking the user to select a voicemail provider as
1022          opposed to silently falling back to default one. */
1023         if (provider == null) {
1024             if (DBG) log("updateVMPreferenceWidget: key: " + key + " -> null.");
1025 
1026             mVoicemailProviders.setSummary(getString(R.string.sum_voicemail_choose_provider));
1027             mVoicemailSettings.setEnabled(false);
1028             mVoicemailSettings.setIntent(null);
1029             mVoicemailNotificationVibrate.setEnabled(false);
1030         } else {
1031             if (DBG) log("updateVMPreferenceWidget: key: " + key + " -> " + provider.toString());
1032 
1033             final String providerName = provider.name;
1034             mVoicemailProviders.setSummary(providerName);
1035             mVoicemailSettings.setEnabled(true);
1036             mVoicemailSettings.setIntent(provider.intent);
1037             mVoicemailNotificationVibrate.setEnabled(true);
1038         }
1039     }
1040 
1041     /**
1042      * Update the voicemail number from what we've recorded on the sim.
1043      */
updateVoiceNumberField()1044     private void updateVoiceNumberField() {
1045         if (DBG) log("updateVoiceNumberField()");
1046 
1047         mOldVmNumber = mPhone.getVoiceMailNumber();
1048         if (TextUtils.isEmpty(mOldVmNumber)) {
1049             mSubMenuVoicemailSettings.setPhoneNumber("");
1050             mSubMenuVoicemailSettings.setSummary(getString(R.string.voicemail_number_not_set));
1051         } else {
1052             mSubMenuVoicemailSettings.setPhoneNumber(mOldVmNumber);
1053             mSubMenuVoicemailSettings.setSummary(BidiFormatter.getInstance().unicodeWrap(
1054                     mOldVmNumber, TextDirectionHeuristics.LTR));
1055         }
1056     }
1057 
handleSetVmOrFwdMessage()1058     private void handleSetVmOrFwdMessage() {
1059         if (DBG) log("handleSetVMMessage: set VM request complete");
1060 
1061         if (!isFwdChangeSuccess()) {
1062             handleVmOrFwdSetError(VoicemailDialogUtil.FWD_SET_RESPONSE_ERROR_DIALOG);
1063         } else if (!isVmChangeSuccess()) {
1064             handleVmOrFwdSetError(VoicemailDialogUtil.VM_RESPONSE_ERROR_DIALOG);
1065         } else {
1066             handleVmAndFwdSetSuccess(VoicemailDialogUtil.VM_CONFIRM_DIALOG);
1067         }
1068     }
1069 
1070     /**
1071      * Called when Voicemail Provider or its forwarding settings failed. Rolls back partly made
1072      * changes to those settings and show "failure" dialog.
1073      *
1074      * @param dialogId ID of the dialog to show for the specific error case. Either
1075      *     {@link #FWD_SET_RESPONSE_ERROR_DIALOG} or {@link #VM_RESPONSE_ERROR_DIALOG}
1076      */
handleVmOrFwdSetError(int dialogId)1077     private void handleVmOrFwdSetError(int dialogId) {
1078         if (mChangingVMorFwdDueToProviderChange) {
1079             mVMOrFwdSetError = dialogId;
1080             mChangingVMorFwdDueToProviderChange = false;
1081             switchToPreviousVoicemailProvider();
1082             return;
1083         }
1084         mChangingVMorFwdDueToProviderChange = false;
1085         showDialogIfForeground(dialogId);
1086         updateVoiceNumberField();
1087     }
1088 
1089     /**
1090      * Called when Voicemail Provider and its forwarding settings were successfully finished.
1091      * This updates a bunch of variables and show "success" dialog.
1092      */
handleVmAndFwdSetSuccess(int dialogId)1093     private void handleVmAndFwdSetSuccess(int dialogId) {
1094         if (DBG) log("handleVmAndFwdSetSuccess: key is " + mVoicemailProviders.getKey());
1095 
1096         mPreviousVMProviderKey = mVoicemailProviders.getKey();
1097         mChangingVMorFwdDueToProviderChange = false;
1098         showDialogIfForeground(dialogId);
1099         updateVoiceNumberField();
1100     }
1101 
onRevertDone()1102     private void onRevertDone() {
1103         if (DBG) log("onRevertDone: Changing provider key back to " + mPreviousVMProviderKey);
1104 
1105         updateVMPreferenceWidgets(mPreviousVMProviderKey);
1106         updateVoiceNumberField();
1107         if (mVMOrFwdSetError != 0) {
1108             showDialogIfForeground(mVMOrFwdSetError);
1109             mVMOrFwdSetError = 0;
1110         }
1111     }
1112 
1113 
1114     //*********************************************************************************************
1115     // Voicemail State Helpers
1116     //*********************************************************************************************
1117 
1118     /**
1119      * Return true if there is a change result for every reason for which we expect a result.
1120      */
isForwardingCompleted()1121     private boolean isForwardingCompleted() {
1122         if (mForwardingChangeResults == null) {
1123             return true;
1124         }
1125 
1126         for (Integer reason : mExpectedChangeResultReasons) {
1127             if (mForwardingChangeResults.get(reason) == null) {
1128                 return false;
1129             }
1130         }
1131 
1132         return true;
1133     }
1134 
isFwdChangeSuccess()1135     private boolean isFwdChangeSuccess() {
1136         if (mForwardingChangeResults == null) {
1137             return true;
1138         }
1139 
1140         for (AsyncResult result : mForwardingChangeResults.values()) {
1141             Throwable exception = result.exception;
1142             if (exception != null) {
1143                 String msg = exception.getMessage();
1144                 msg = (msg != null) ? msg : "";
1145                 Log.w(LOG_TAG, "Failed to change forwarding setting. Reason: " + msg);
1146                 return false;
1147             }
1148         }
1149         return true;
1150     }
1151 
isVmChangeSuccess()1152     private boolean isVmChangeSuccess() {
1153         if (mVoicemailChangeResult.exception != null) {
1154             String msg = mVoicemailChangeResult.exception.getMessage();
1155             msg = (msg != null) ? msg : "";
1156             Log.w(LOG_TAG, "Failed to change voicemail. Reason: " + msg);
1157             return false;
1158         }
1159         return true;
1160     }
1161 
isVisualVoicemailActivated()1162     private boolean isVisualVoicemailActivated() {
1163         if (!VisualVoicemailSettingsUtil.isEnabled(this, mPhoneAccountHandle)) {
1164             return false;
1165         }
1166         VisualVoicemailPreferences preferences = new VisualVoicemailPreferences(this,
1167                 mPhoneAccountHandle);
1168         return preferences.getString(OmtpConstants.SERVER_ADDRESS, null) != null;
1169 
1170     }
1171 
log(String msg)1172     private static void log(String msg) {
1173         Log.d(LOG_TAG, msg);
1174     }
1175 }
1176