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      1 /*
      2  * Copyright (C) 2011 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.dialer.app.dialpad;
     18 
     19 import android.Manifest.permission;
     20 import android.app.Activity;
     21 import android.app.AlertDialog;
     22 import android.app.Dialog;
     23 import android.app.DialogFragment;
     24 import android.app.Fragment;
     25 import android.content.BroadcastReceiver;
     26 import android.content.ContentResolver;
     27 import android.content.Context;
     28 import android.content.DialogInterface;
     29 import android.content.Intent;
     30 import android.content.IntentFilter;
     31 import android.content.pm.PackageManager;
     32 import android.database.Cursor;
     33 import android.graphics.Bitmap;
     34 import android.graphics.BitmapFactory;
     35 import android.media.AudioManager;
     36 import android.media.ToneGenerator;
     37 import android.net.Uri;
     38 import android.os.Bundle;
     39 import android.os.Trace;
     40 import android.provider.Contacts.People;
     41 import android.provider.Contacts.Phones;
     42 import android.provider.Contacts.PhonesColumns;
     43 import android.provider.Settings;
     44 import android.support.annotation.VisibleForTesting;
     45 import android.support.design.widget.FloatingActionButton;
     46 import android.support.v4.content.ContextCompat;
     47 import android.telecom.PhoneAccount;
     48 import android.telecom.PhoneAccountHandle;
     49 import android.telephony.PhoneNumberFormattingTextWatcher;
     50 import android.telephony.PhoneNumberUtils;
     51 import android.telephony.TelephonyManager;
     52 import android.text.Editable;
     53 import android.text.TextUtils;
     54 import android.text.TextWatcher;
     55 import android.util.AttributeSet;
     56 import android.view.HapticFeedbackConstants;
     57 import android.view.KeyEvent;
     58 import android.view.LayoutInflater;
     59 import android.view.Menu;
     60 import android.view.MenuItem;
     61 import android.view.MotionEvent;
     62 import android.view.View;
     63 import android.view.ViewGroup;
     64 import android.widget.AdapterView;
     65 import android.widget.BaseAdapter;
     66 import android.widget.EditText;
     67 import android.widget.ImageView;
     68 import android.widget.ListView;
     69 import android.widget.PopupMenu;
     70 import android.widget.RelativeLayout;
     71 import android.widget.TextView;
     72 import com.android.contacts.common.dialog.CallSubjectDialog;
     73 import com.android.contacts.common.util.StopWatch;
     74 import com.android.contacts.common.widget.FloatingActionButtonController;
     75 import com.android.dialer.animation.AnimUtils;
     76 import com.android.dialer.app.DialtactsActivity;
     77 import com.android.dialer.app.R;
     78 import com.android.dialer.app.SpecialCharSequenceMgr;
     79 import com.android.dialer.app.calllog.CallLogAsync;
     80 import com.android.dialer.callintent.CallInitiationType;
     81 import com.android.dialer.callintent.CallIntentBuilder;
     82 import com.android.dialer.calllogutils.PhoneAccountUtils;
     83 import com.android.dialer.common.LogUtil;
     84 import com.android.dialer.dialpadview.DialpadKeyButton;
     85 import com.android.dialer.dialpadview.DialpadView;
     86 import com.android.dialer.location.GeoUtil;
     87 import com.android.dialer.proguard.UsedByReflection;
     88 import com.android.dialer.telecom.TelecomUtil;
     89 import com.android.dialer.util.CallUtil;
     90 import com.android.dialer.util.DialerUtils;
     91 import com.android.dialer.util.PermissionsUtil;
     92 import java.util.HashSet;
     93 import java.util.List;
     94 
     95 /** Fragment that displays a twelve-key phone dialpad. */
     96 public class DialpadFragment extends Fragment
     97     implements View.OnClickListener,
     98         View.OnLongClickListener,
     99         View.OnKeyListener,
    100         AdapterView.OnItemClickListener,
    101         TextWatcher,
    102         PopupMenu.OnMenuItemClickListener,
    103         DialpadKeyButton.OnPressedListener {
    104 
    105   private static final String TAG = "DialpadFragment";
    106   private static final boolean DEBUG = DialtactsActivity.DEBUG;
    107   private static final String EMPTY_NUMBER = "";
    108   private static final char PAUSE = ',';
    109   private static final char WAIT = ';';
    110   /** The length of DTMF tones in milliseconds */
    111   private static final int TONE_LENGTH_MS = 150;
    112 
    113   private static final int TONE_LENGTH_INFINITE = -1;
    114   /** The DTMF tone volume relative to other sounds in the stream */
    115   private static final int TONE_RELATIVE_VOLUME = 80;
    116   /** Stream type used to play the DTMF tones off call, and mapped to the volume control keys */
    117   private static final int DIAL_TONE_STREAM_TYPE = AudioManager.STREAM_DTMF;
    118   /** Identifier for the "Add Call" intent extra. */
    119   private static final String ADD_CALL_MODE_KEY = "add_call_mode";
    120   /**
    121    * Identifier for intent extra for sending an empty Flash message for CDMA networks. This message
    122    * is used by the network to simulate a press/depress of the "hookswitch" of a landline phone. Aka
    123    * "empty flash".
    124    *
    125    * <p>TODO: Using an intent extra to tell the phone to send this flash is a temporary measure. To
    126    * be replaced with an Telephony/TelecomManager call in the future. TODO: Keep in sync with the
    127    * string defined in OutgoingCallBroadcaster.java in Phone app until this is replaced with the
    128    * Telephony/Telecom API.
    129    */
    130   private static final String EXTRA_SEND_EMPTY_FLASH = "com.android.phone.extra.SEND_EMPTY_FLASH";
    131 
    132   private static final String PREF_DIGITS_FILLED_BY_INTENT = "pref_digits_filled_by_intent";
    133   private final Object mToneGeneratorLock = new Object();
    134   /** Set of dialpad keys that are currently being pressed */
    135   private final HashSet<View> mPressedDialpadKeys = new HashSet<View>(12);
    136   // Last number dialed, retrieved asynchronously from the call DB
    137   // in onCreate. This number is displayed when the user hits the
    138   // send key and cleared in onPause.
    139   private final CallLogAsync mCallLog = new CallLogAsync();
    140   private OnDialpadQueryChangedListener mDialpadQueryListener;
    141   private DialpadView mDialpadView;
    142   private EditText mDigits;
    143   private int mDialpadSlideInDuration;
    144   /** Remembers if we need to clear digits field when the screen is completely gone. */
    145   private boolean mClearDigitsOnStop;
    146 
    147   private View mOverflowMenuButton;
    148   private PopupMenu mOverflowPopupMenu;
    149   private View mDelete;
    150   private ToneGenerator mToneGenerator;
    151   private View mSpacer;
    152   private FloatingActionButtonController mFloatingActionButtonController;
    153   private ListView mDialpadChooser;
    154   private DialpadChooserAdapter mDialpadChooserAdapter;
    155   /** Regular expression prohibiting manual phone call. Can be empty, which means "no rule". */
    156   private String mProhibitedPhoneNumberRegexp;
    157 
    158   private PseudoEmergencyAnimator mPseudoEmergencyAnimator;
    159   private String mLastNumberDialed = EMPTY_NUMBER;
    160 
    161   // determines if we want to playback local DTMF tones.
    162   private boolean mDTMFToneEnabled;
    163   private String mCurrentCountryIso;
    164   private CallStateReceiver mCallStateReceiver;
    165   private boolean mWasEmptyBeforeTextChange;
    166   /**
    167    * This field is set to true while processing an incoming DIAL intent, in order to make sure that
    168    * SpecialCharSequenceMgr actions can be triggered by user input but *not* by a tel: URI passed by
    169    * some other app. It will be set to false when all digits are cleared.
    170    */
    171   private boolean mDigitsFilledByIntent;
    172 
    173   private boolean mStartedFromNewIntent = false;
    174   private boolean mFirstLaunch = false;
    175   private boolean mAnimate = false;
    176 
    177   /**
    178    * Determines whether an add call operation is requested.
    179    *
    180    * @param intent The intent.
    181    * @return {@literal true} if add call operation was requested. {@literal false} otherwise.
    182    */
    183   public static boolean isAddCallMode(Intent intent) {
    184     if (intent == null) {
    185       return false;
    186     }
    187     final String action = intent.getAction();
    188     if (Intent.ACTION_DIAL.equals(action) || Intent.ACTION_VIEW.equals(action)) {
    189       // see if we are "adding a call" from the InCallScreen; false by default.
    190       return intent.getBooleanExtra(ADD_CALL_MODE_KEY, false);
    191     } else {
    192       return false;
    193     }
    194   }
    195 
    196   /**
    197    * Format the provided string of digits into one that represents a properly formatted phone
    198    * number.
    199    *
    200    * @param dialString String of characters to format
    201    * @param normalizedNumber the E164 format number whose country code is used if the given
    202    *     phoneNumber doesn't have the country code.
    203    * @param countryIso The country code representing the format to use if the provided normalized
    204    *     number is null or invalid.
    205    * @return the provided string of digits as a formatted phone number, retaining any post-dial
    206    *     portion of the string.
    207    */
    208   @VisibleForTesting
    209   static String getFormattedDigits(String dialString, String normalizedNumber, String countryIso) {
    210     String number = PhoneNumberUtils.extractNetworkPortion(dialString);
    211     // Also retrieve the post dial portion of the provided data, so that the entire dial
    212     // string can be reconstituted later.
    213     final String postDial = PhoneNumberUtils.extractPostDialPortion(dialString);
    214 
    215     if (TextUtils.isEmpty(number)) {
    216       return postDial;
    217     }
    218 
    219     number = PhoneNumberUtils.formatNumber(number, normalizedNumber, countryIso);
    220 
    221     if (TextUtils.isEmpty(postDial)) {
    222       return number;
    223     }
    224 
    225     return number.concat(postDial);
    226   }
    227 
    228   /**
    229    * Returns true of the newDigit parameter can be added at the current selection point, otherwise
    230    * returns false. Only prevents input of WAIT and PAUSE digits at an unsupported position. Fails
    231    * early if start == -1 or start is larger than end.
    232    */
    233   @VisibleForTesting
    234   /* package */ static boolean canAddDigit(CharSequence digits, int start, int end, char newDigit) {
    235     if (newDigit != WAIT && newDigit != PAUSE) {
    236       throw new IllegalArgumentException(
    237           "Should not be called for anything other than PAUSE & WAIT");
    238     }
    239 
    240     // False if no selection, or selection is reversed (end < start)
    241     if (start == -1 || end < start) {
    242       return false;
    243     }
    244 
    245     // unsupported selection-out-of-bounds state
    246     if (start > digits.length() || end > digits.length()) {
    247       return false;
    248     }
    249 
    250     // Special digit cannot be the first digit
    251     if (start == 0) {
    252       return false;
    253     }
    254 
    255     if (newDigit == WAIT) {
    256       // preceding char is ';' (WAIT)
    257       if (digits.charAt(start - 1) == WAIT) {
    258         return false;
    259       }
    260 
    261       // next char is ';' (WAIT)
    262       if ((digits.length() > end) && (digits.charAt(end) == WAIT)) {
    263         return false;
    264       }
    265     }
    266 
    267     return true;
    268   }
    269 
    270   private TelephonyManager getTelephonyManager() {
    271     return (TelephonyManager) getActivity().getSystemService(Context.TELEPHONY_SERVICE);
    272   }
    273 
    274   @Override
    275   public Context getContext() {
    276     return getActivity();
    277   }
    278 
    279   @Override
    280   public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    281     mWasEmptyBeforeTextChange = TextUtils.isEmpty(s);
    282   }
    283 
    284   @Override
    285   public void onTextChanged(CharSequence input, int start, int before, int changeCount) {
    286     if (mWasEmptyBeforeTextChange != TextUtils.isEmpty(input)) {
    287       final Activity activity = getActivity();
    288       if (activity != null) {
    289         activity.invalidateOptionsMenu();
    290         updateMenuOverflowButton(mWasEmptyBeforeTextChange);
    291       }
    292     }
    293 
    294     // DTMF Tones do not need to be played here any longer -
    295     // the DTMF dialer handles that functionality now.
    296   }
    297 
    298   @Override
    299   public void afterTextChanged(Editable input) {
    300     // When DTMF dialpad buttons are being pressed, we delay SpecialCharSequenceMgr sequence,
    301     // since some of SpecialCharSequenceMgr's behavior is too abrupt for the "touch-down"
    302     // behavior.
    303     if (!mDigitsFilledByIntent
    304         && SpecialCharSequenceMgr.handleChars(getActivity(), input.toString(), mDigits)) {
    305       // A special sequence was entered, clear the digits
    306       mDigits.getText().clear();
    307     }
    308 
    309     if (isDigitsEmpty()) {
    310       mDigitsFilledByIntent = false;
    311       mDigits.setCursorVisible(false);
    312     }
    313 
    314     if (mDialpadQueryListener != null) {
    315       mDialpadQueryListener.onDialpadQueryChanged(mDigits.getText().toString());
    316     }
    317 
    318     updateDeleteButtonEnabledState();
    319   }
    320 
    321   @Override
    322   public void onCreate(Bundle state) {
    323     Trace.beginSection(TAG + " onCreate");
    324     super.onCreate(state);
    325 
    326     mFirstLaunch = state == null;
    327 
    328     mCurrentCountryIso = GeoUtil.getCurrentCountryIso(getActivity());
    329 
    330     mProhibitedPhoneNumberRegexp =
    331         getResources().getString(R.string.config_prohibited_phone_number_regexp);
    332 
    333     if (state != null) {
    334       mDigitsFilledByIntent = state.getBoolean(PREF_DIGITS_FILLED_BY_INTENT);
    335     }
    336 
    337     mDialpadSlideInDuration = getResources().getInteger(R.integer.dialpad_slide_in_duration);
    338 
    339     if (mCallStateReceiver == null) {
    340       IntentFilter callStateIntentFilter =
    341           new IntentFilter(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
    342       mCallStateReceiver = new CallStateReceiver();
    343       getActivity().registerReceiver(mCallStateReceiver, callStateIntentFilter);
    344     }
    345     Trace.endSection();
    346   }
    347 
    348   @Override
    349   public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
    350     Trace.beginSection(TAG + " onCreateView");
    351     Trace.beginSection(TAG + " inflate view");
    352     final View fragmentView = inflater.inflate(R.layout.dialpad_fragment, container, false);
    353     Trace.endSection();
    354     Trace.beginSection(TAG + " buildLayer");
    355     fragmentView.buildLayer();
    356     Trace.endSection();
    357 
    358     Trace.beginSection(TAG + " setup views");
    359 
    360     mDialpadView = (DialpadView) fragmentView.findViewById(R.id.dialpad_view);
    361     mDialpadView.setCanDigitsBeEdited(true);
    362     mDigits = mDialpadView.getDigits();
    363     mDigits.setKeyListener(UnicodeDialerKeyListener.INSTANCE);
    364     mDigits.setOnClickListener(this);
    365     mDigits.setOnKeyListener(this);
    366     mDigits.setOnLongClickListener(this);
    367     mDigits.addTextChangedListener(this);
    368     mDigits.setElegantTextHeight(false);
    369 
    370     PhoneNumberFormattingTextWatcher watcher =
    371         new PhoneNumberFormattingTextWatcher(GeoUtil.getCurrentCountryIso(getActivity()));
    372     mDigits.addTextChangedListener(watcher);
    373 
    374     // Check for the presence of the keypad
    375     View oneButton = fragmentView.findViewById(R.id.one);
    376     if (oneButton != null) {
    377       configureKeypadListeners(fragmentView);
    378     }
    379 
    380     mDelete = mDialpadView.getDeleteButton();
    381 
    382     if (mDelete != null) {
    383       mDelete.setOnClickListener(this);
    384       mDelete.setOnLongClickListener(this);
    385     }
    386 
    387     mSpacer = fragmentView.findViewById(R.id.spacer);
    388     mSpacer.setOnTouchListener(
    389         new View.OnTouchListener() {
    390           @Override
    391           public boolean onTouch(View v, MotionEvent event) {
    392             if (isDigitsEmpty()) {
    393               if (getActivity() != null) {
    394                 return ((HostInterface) getActivity()).onDialpadSpacerTouchWithEmptyQuery();
    395               }
    396               return true;
    397             }
    398             return false;
    399           }
    400         });
    401 
    402     mDigits.setCursorVisible(false);
    403 
    404     // Set up the "dialpad chooser" UI; see showDialpadChooser().
    405     mDialpadChooser = (ListView) fragmentView.findViewById(R.id.dialpadChooser);
    406     mDialpadChooser.setOnItemClickListener(this);
    407 
    408     FloatingActionButton floatingActionButton =
    409         (FloatingActionButton) fragmentView.findViewById(R.id.dialpad_floating_action_button);
    410     floatingActionButton.setOnClickListener(this);
    411     mFloatingActionButtonController =
    412         new FloatingActionButtonController(getActivity(), floatingActionButton);
    413     Trace.endSection();
    414     Trace.endSection();
    415     return fragmentView;
    416   }
    417 
    418   private boolean isLayoutReady() {
    419     return mDigits != null;
    420   }
    421 
    422   @VisibleForTesting
    423   public EditText getDigitsWidget() {
    424     return mDigits;
    425   }
    426 
    427   /** @return true when {@link #mDigits} is actually filled by the Intent. */
    428   private boolean fillDigitsIfNecessary(Intent intent) {
    429     // Only fills digits from an intent if it is a new intent.
    430     // Otherwise falls back to the previously used number.
    431     if (!mFirstLaunch && !mStartedFromNewIntent) {
    432       return false;
    433     }
    434 
    435     final String action = intent.getAction();
    436     if (Intent.ACTION_DIAL.equals(action) || Intent.ACTION_VIEW.equals(action)) {
    437       Uri uri = intent.getData();
    438       if (uri != null) {
    439         if (PhoneAccount.SCHEME_TEL.equals(uri.getScheme())) {
    440           // Put the requested number into the input area
    441           String data = uri.getSchemeSpecificPart();
    442           // Remember it is filled via Intent.
    443           mDigitsFilledByIntent = true;
    444           final String converted =
    445               PhoneNumberUtils.convertKeypadLettersToDigits(
    446                   PhoneNumberUtils.replaceUnicodeDigits(data));
    447           setFormattedDigits(converted, null);
    448           return true;
    449         } else {
    450           if (!PermissionsUtil.hasContactsReadPermissions(getActivity())) {
    451             return false;
    452           }
    453           String type = intent.getType();
    454           if (People.CONTENT_ITEM_TYPE.equals(type) || Phones.CONTENT_ITEM_TYPE.equals(type)) {
    455             // Query the phone number
    456             Cursor c =
    457                 getActivity()
    458                     .getContentResolver()
    459                     .query(
    460                         intent.getData(),
    461                         new String[] {PhonesColumns.NUMBER, PhonesColumns.NUMBER_KEY},
    462                         null,
    463                         null,
    464                         null);
    465             if (c != null) {
    466               try {
    467                 if (c.moveToFirst()) {
    468                   // Remember it is filled via Intent.
    469                   mDigitsFilledByIntent = true;
    470                   // Put the number into the input area
    471                   setFormattedDigits(c.getString(0), c.getString(1));
    472                   return true;
    473                 }
    474               } finally {
    475                 c.close();
    476               }
    477             }
    478           }
    479         }
    480       }
    481     }
    482     return false;
    483   }
    484 
    485   /**
    486    * Checks the given Intent and changes dialpad's UI state. For example, if the Intent requires the
    487    * screen to enter "Add Call" mode, this method will show correct UI for the mode.
    488    */
    489   private void configureScreenFromIntent(Activity parent) {
    490     // If we were not invoked with a DIAL intent,
    491     if (!(parent instanceof DialtactsActivity)) {
    492       setStartedFromNewIntent(false);
    493       return;
    494     }
    495     // See if we were invoked with a DIAL intent. If we were, fill in the appropriate
    496     // digits in the dialer field.
    497     Intent intent = parent.getIntent();
    498 
    499     if (!isLayoutReady()) {
    500       // This happens typically when parent's Activity#onNewIntent() is called while
    501       // Fragment#onCreateView() isn't called yet, and thus we cannot configure Views at
    502       // this point. onViewCreate() should call this method after preparing layouts, so
    503       // just ignore this call now.
    504       LogUtil.i(
    505           "DialpadFragment.configureScreenFromIntent",
    506           "Screen configuration is requested before onCreateView() is called. Ignored");
    507       return;
    508     }
    509 
    510     boolean needToShowDialpadChooser = false;
    511 
    512     // Be sure *not* to show the dialpad chooser if this is an
    513     // explicit "Add call" action, though.
    514     final boolean isAddCallMode = isAddCallMode(intent);
    515     if (!isAddCallMode) {
    516 
    517       // Don't show the chooser when called via onNewIntent() and phone number is present.
    518       // i.e. User clicks a telephone link from gmail for example.
    519       // In this case, we want to show the dialpad with the phone number.
    520       final boolean digitsFilled = fillDigitsIfNecessary(intent);
    521       if (!(mStartedFromNewIntent && digitsFilled)) {
    522 
    523         final String action = intent.getAction();
    524         if (Intent.ACTION_DIAL.equals(action)
    525             || Intent.ACTION_VIEW.equals(action)
    526             || Intent.ACTION_MAIN.equals(action)) {
    527           // If there's already an active call, bring up an intermediate UI to
    528           // make the user confirm what they really want to do.
    529           if (isPhoneInUse()) {
    530             needToShowDialpadChooser = true;
    531           }
    532         }
    533       }
    534     }
    535     showDialpadChooser(needToShowDialpadChooser);
    536     setStartedFromNewIntent(false);
    537   }
    538 
    539   public void setStartedFromNewIntent(boolean value) {
    540     mStartedFromNewIntent = value;
    541   }
    542 
    543   public void clearCallRateInformation() {
    544     setCallRateInformation(null, null);
    545   }
    546 
    547   public void setCallRateInformation(String countryName, String displayRate) {
    548     mDialpadView.setCallRateInformation(countryName, displayRate);
    549   }
    550 
    551   /** Sets formatted digits to digits field. */
    552   private void setFormattedDigits(String data, String normalizedNumber) {
    553     final String formatted = getFormattedDigits(data, normalizedNumber, mCurrentCountryIso);
    554     if (!TextUtils.isEmpty(formatted)) {
    555       Editable digits = mDigits.getText();
    556       digits.replace(0, digits.length(), formatted);
    557       // for some reason this isn't getting called in the digits.replace call above..
    558       // but in any case, this will make sure the background drawable looks right
    559       afterTextChanged(digits);
    560     }
    561   }
    562 
    563   private void configureKeypadListeners(View fragmentView) {
    564     final int[] buttonIds =
    565         new int[] {
    566           R.id.one,
    567           R.id.two,
    568           R.id.three,
    569           R.id.four,
    570           R.id.five,
    571           R.id.six,
    572           R.id.seven,
    573           R.id.eight,
    574           R.id.nine,
    575           R.id.star,
    576           R.id.zero,
    577           R.id.pound
    578         };
    579 
    580     DialpadKeyButton dialpadKey;
    581 
    582     for (int i = 0; i < buttonIds.length; i++) {
    583       dialpadKey = (DialpadKeyButton) fragmentView.findViewById(buttonIds[i]);
    584       dialpadKey.setOnPressedListener(this);
    585     }
    586 
    587     // Long-pressing one button will initiate Voicemail.
    588     final DialpadKeyButton one = (DialpadKeyButton) fragmentView.findViewById(R.id.one);
    589     one.setOnLongClickListener(this);
    590 
    591     // Long-pressing zero button will enter '+' instead.
    592     final DialpadKeyButton zero = (DialpadKeyButton) fragmentView.findViewById(R.id.zero);
    593     zero.setOnLongClickListener(this);
    594   }
    595 
    596   @Override
    597   public void onStart() {
    598     LogUtil.d("DialpadFragment.onStart", "first launch: %b", mFirstLaunch);
    599     Trace.beginSection(TAG + " onStart");
    600     super.onStart();
    601     // if the mToneGenerator creation fails, just continue without it.  It is
    602     // a local audio signal, and is not as important as the dtmf tone itself.
    603     final long start = System.currentTimeMillis();
    604     synchronized (mToneGeneratorLock) {
    605       if (mToneGenerator == null) {
    606         try {
    607           mToneGenerator = new ToneGenerator(DIAL_TONE_STREAM_TYPE, TONE_RELATIVE_VOLUME);
    608         } catch (RuntimeException e) {
    609           LogUtil.e(
    610               "DialpadFragment.onStart",
    611               "Exception caught while creating local tone generator: " + e);
    612           mToneGenerator = null;
    613         }
    614       }
    615     }
    616     final long total = System.currentTimeMillis() - start;
    617     if (total > 50) {
    618       LogUtil.i("DialpadFragment.onStart", "Time for ToneGenerator creation: " + total);
    619     }
    620     Trace.endSection();
    621   }
    622 
    623   @Override
    624   public void onResume() {
    625     LogUtil.d("DialpadFragment.onResume", "");
    626     Trace.beginSection(TAG + " onResume");
    627     super.onResume();
    628 
    629     final DialtactsActivity activity = (DialtactsActivity) getActivity();
    630     mDialpadQueryListener = activity;
    631 
    632     final StopWatch stopWatch = StopWatch.start("Dialpad.onResume");
    633 
    634     // Query the last dialed number. Do it first because hitting
    635     // the DB is 'slow'. This call is asynchronous.
    636     queryLastOutgoingCall();
    637 
    638     stopWatch.lap("qloc");
    639 
    640     final ContentResolver contentResolver = activity.getContentResolver();
    641 
    642     // retrieve the DTMF tone play back setting.
    643     mDTMFToneEnabled =
    644         Settings.System.getInt(contentResolver, Settings.System.DTMF_TONE_WHEN_DIALING, 1) == 1;
    645 
    646     stopWatch.lap("dtwd");
    647 
    648     stopWatch.lap("hptc");
    649 
    650     mPressedDialpadKeys.clear();
    651 
    652     configureScreenFromIntent(getActivity());
    653 
    654     stopWatch.lap("fdin");
    655 
    656     if (!isPhoneInUse()) {
    657       // A sanity-check: the "dialpad chooser" UI should not be visible if the phone is idle.
    658       showDialpadChooser(false);
    659     }
    660 
    661     stopWatch.lap("hnt");
    662 
    663     updateDeleteButtonEnabledState();
    664 
    665     stopWatch.lap("bes");
    666 
    667     stopWatch.stopAndLog(TAG, 50);
    668 
    669     // Populate the overflow menu in onResume instead of onCreate, so that if the SMS activity
    670     // is disabled while Dialer is paused, the "Send a text message" option can be correctly
    671     // removed when resumed.
    672     mOverflowMenuButton = mDialpadView.getOverflowMenuButton();
    673     mOverflowPopupMenu = buildOptionsMenu(mOverflowMenuButton);
    674     mOverflowMenuButton.setOnTouchListener(mOverflowPopupMenu.getDragToOpenListener());
    675     mOverflowMenuButton.setOnClickListener(this);
    676     mOverflowMenuButton.setVisibility(isDigitsEmpty() ? View.INVISIBLE : View.VISIBLE);
    677 
    678     if (mFirstLaunch) {
    679       // The onHiddenChanged callback does not get called the first time the fragment is
    680       // attached, so call it ourselves here.
    681       onHiddenChanged(false);
    682     }
    683 
    684     mFirstLaunch = false;
    685     Trace.endSection();
    686   }
    687 
    688   @Override
    689   public void onPause() {
    690     super.onPause();
    691 
    692     // Make sure we don't leave this activity with a tone still playing.
    693     stopTone();
    694     mPressedDialpadKeys.clear();
    695 
    696     // TODO: I wonder if we should not check if the AsyncTask that
    697     // lookup the last dialed number has completed.
    698     mLastNumberDialed = EMPTY_NUMBER; // Since we are going to query again, free stale number.
    699 
    700     SpecialCharSequenceMgr.cleanup();
    701   }
    702 
    703   @Override
    704   public void onStop() {
    705     super.onStop();
    706 
    707     synchronized (mToneGeneratorLock) {
    708       if (mToneGenerator != null) {
    709         mToneGenerator.release();
    710         mToneGenerator = null;
    711       }
    712     }
    713 
    714     if (mClearDigitsOnStop) {
    715       mClearDigitsOnStop = false;
    716       clearDialpad();
    717     }
    718   }
    719 
    720   @Override
    721   public void onSaveInstanceState(Bundle outState) {
    722     super.onSaveInstanceState(outState);
    723     outState.putBoolean(PREF_DIGITS_FILLED_BY_INTENT, mDigitsFilledByIntent);
    724   }
    725 
    726   @Override
    727   public void onDestroy() {
    728     super.onDestroy();
    729     if (mPseudoEmergencyAnimator != null) {
    730       mPseudoEmergencyAnimator.destroy();
    731       mPseudoEmergencyAnimator = null;
    732     }
    733     getActivity().unregisterReceiver(mCallStateReceiver);
    734   }
    735 
    736   private void keyPressed(int keyCode) {
    737     if (getView() == null || getView().getTranslationY() != 0) {
    738       return;
    739     }
    740     switch (keyCode) {
    741       case KeyEvent.KEYCODE_1:
    742         playTone(ToneGenerator.TONE_DTMF_1, TONE_LENGTH_INFINITE);
    743         break;
    744       case KeyEvent.KEYCODE_2:
    745         playTone(ToneGenerator.TONE_DTMF_2, TONE_LENGTH_INFINITE);
    746         break;
    747       case KeyEvent.KEYCODE_3:
    748         playTone(ToneGenerator.TONE_DTMF_3, TONE_LENGTH_INFINITE);
    749         break;
    750       case KeyEvent.KEYCODE_4:
    751         playTone(ToneGenerator.TONE_DTMF_4, TONE_LENGTH_INFINITE);
    752         break;
    753       case KeyEvent.KEYCODE_5:
    754         playTone(ToneGenerator.TONE_DTMF_5, TONE_LENGTH_INFINITE);
    755         break;
    756       case KeyEvent.KEYCODE_6:
    757         playTone(ToneGenerator.TONE_DTMF_6, TONE_LENGTH_INFINITE);
    758         break;
    759       case KeyEvent.KEYCODE_7:
    760         playTone(ToneGenerator.TONE_DTMF_7, TONE_LENGTH_INFINITE);
    761         break;
    762       case KeyEvent.KEYCODE_8:
    763         playTone(ToneGenerator.TONE_DTMF_8, TONE_LENGTH_INFINITE);
    764         break;
    765       case KeyEvent.KEYCODE_9:
    766         playTone(ToneGenerator.TONE_DTMF_9, TONE_LENGTH_INFINITE);
    767         break;
    768       case KeyEvent.KEYCODE_0:
    769         playTone(ToneGenerator.TONE_DTMF_0, TONE_LENGTH_INFINITE);
    770         break;
    771       case KeyEvent.KEYCODE_POUND:
    772         playTone(ToneGenerator.TONE_DTMF_P, TONE_LENGTH_INFINITE);
    773         break;
    774       case KeyEvent.KEYCODE_STAR:
    775         playTone(ToneGenerator.TONE_DTMF_S, TONE_LENGTH_INFINITE);
    776         break;
    777       default:
    778         break;
    779     }
    780 
    781     getView().performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
    782     KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, keyCode);
    783     mDigits.onKeyDown(keyCode, event);
    784 
    785     // If the cursor is at the end of the text we hide it.
    786     final int length = mDigits.length();
    787     if (length == mDigits.getSelectionStart() && length == mDigits.getSelectionEnd()) {
    788       mDigits.setCursorVisible(false);
    789     }
    790   }
    791 
    792   @Override
    793   public boolean onKey(View view, int keyCode, KeyEvent event) {
    794     if (view.getId() == R.id.digits) {
    795       if (keyCode == KeyEvent.KEYCODE_ENTER) {
    796         handleDialButtonPressed();
    797         return true;
    798       }
    799     }
    800     return false;
    801   }
    802 
    803   /**
    804    * When a key is pressed, we start playing DTMF tone, do vibration, and enter the digit
    805    * immediately. When a key is released, we stop the tone. Note that the "key press" event will be
    806    * delivered by the system with certain amount of delay, it won't be synced with user's actual
    807    * "touch-down" behavior.
    808    */
    809   @Override
    810   public void onPressed(View view, boolean pressed) {
    811     if (DEBUG) {
    812       LogUtil.d("DialpadFragment.onPressed", "view: " + view + ", pressed: " + pressed);
    813     }
    814     if (pressed) {
    815       int resId = view.getId();
    816       if (resId == R.id.one) {
    817         keyPressed(KeyEvent.KEYCODE_1);
    818       } else if (resId == R.id.two) {
    819         keyPressed(KeyEvent.KEYCODE_2);
    820       } else if (resId == R.id.three) {
    821         keyPressed(KeyEvent.KEYCODE_3);
    822       } else if (resId == R.id.four) {
    823         keyPressed(KeyEvent.KEYCODE_4);
    824       } else if (resId == R.id.five) {
    825         keyPressed(KeyEvent.KEYCODE_5);
    826       } else if (resId == R.id.six) {
    827         keyPressed(KeyEvent.KEYCODE_6);
    828       } else if (resId == R.id.seven) {
    829         keyPressed(KeyEvent.KEYCODE_7);
    830       } else if (resId == R.id.eight) {
    831         keyPressed(KeyEvent.KEYCODE_8);
    832       } else if (resId == R.id.nine) {
    833         keyPressed(KeyEvent.KEYCODE_9);
    834       } else if (resId == R.id.zero) {
    835         keyPressed(KeyEvent.KEYCODE_0);
    836       } else if (resId == R.id.pound) {
    837         keyPressed(KeyEvent.KEYCODE_POUND);
    838       } else if (resId == R.id.star) {
    839         keyPressed(KeyEvent.KEYCODE_STAR);
    840       } else {
    841         LogUtil.e(
    842             "DialpadFragment.onPressed", "Unexpected onTouch(ACTION_DOWN) event from: " + view);
    843       }
    844       mPressedDialpadKeys.add(view);
    845     } else {
    846       mPressedDialpadKeys.remove(view);
    847       if (mPressedDialpadKeys.isEmpty()) {
    848         stopTone();
    849       }
    850     }
    851   }
    852 
    853   /**
    854    * Called by the containing Activity to tell this Fragment to build an overflow options menu for
    855    * display by the container when appropriate.
    856    *
    857    * @param invoker the View that invoked the options menu, to act as an anchor location.
    858    */
    859   private PopupMenu buildOptionsMenu(View invoker) {
    860     final PopupMenu popupMenu =
    861         new PopupMenu(getActivity(), invoker) {
    862           @Override
    863           public void show() {
    864             final Menu menu = getMenu();
    865 
    866             boolean enable = !isDigitsEmpty();
    867             for (int i = 0; i < menu.size(); i++) {
    868               MenuItem item = menu.getItem(i);
    869               item.setEnabled(enable);
    870               if (item.getItemId() == R.id.menu_call_with_note) {
    871                 item.setVisible(CallUtil.isCallWithSubjectSupported(getContext()));
    872               }
    873             }
    874             super.show();
    875           }
    876         };
    877     popupMenu.inflate(R.menu.dialpad_options);
    878     popupMenu.setOnMenuItemClickListener(this);
    879     return popupMenu;
    880   }
    881 
    882   @Override
    883   public void onClick(View view) {
    884     int resId = view.getId();
    885     if (resId == R.id.dialpad_floating_action_button) {
    886       view.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
    887       handleDialButtonPressed();
    888     } else if (resId == R.id.deleteButton) {
    889       keyPressed(KeyEvent.KEYCODE_DEL);
    890     } else if (resId == R.id.digits) {
    891       if (!isDigitsEmpty()) {
    892         mDigits.setCursorVisible(true);
    893       }
    894     } else if (resId == R.id.dialpad_overflow) {
    895       mOverflowPopupMenu.show();
    896     } else {
    897       LogUtil.w("DialpadFragment.onClick", "Unexpected event from: " + view);
    898       return;
    899     }
    900   }
    901 
    902   @Override
    903   public boolean onLongClick(View view) {
    904     final Editable digits = mDigits.getText();
    905     final int id = view.getId();
    906     if (id == R.id.deleteButton) {
    907       digits.clear();
    908       return true;
    909     } else if (id == R.id.one) {
    910       if (isDigitsEmpty() || TextUtils.equals(mDigits.getText(), "1")) {
    911         // We'll try to initiate voicemail and thus we want to remove irrelevant string.
    912         removePreviousDigitIfPossible('1');
    913 
    914         List<PhoneAccountHandle> subscriptionAccountHandles =
    915             PhoneAccountUtils.getSubscriptionPhoneAccounts(getActivity());
    916         boolean hasUserSelectedDefault =
    917             subscriptionAccountHandles.contains(
    918                 TelecomUtil.getDefaultOutgoingPhoneAccount(
    919                     getActivity(), PhoneAccount.SCHEME_VOICEMAIL));
    920         boolean needsAccountDisambiguation =
    921             subscriptionAccountHandles.size() > 1 && !hasUserSelectedDefault;
    922 
    923         if (needsAccountDisambiguation || isVoicemailAvailable()) {
    924           // On a multi-SIM phone, if the user has not selected a default
    925           // subscription, initiate a call to voicemail so they can select an account
    926           // from the "Call with" dialog.
    927           callVoicemail();
    928         } else if (getActivity() != null) {
    929           // Voicemail is unavailable maybe because Airplane mode is turned on.
    930           // Check the current status and show the most appropriate error message.
    931           final boolean isAirplaneModeOn =
    932               Settings.System.getInt(
    933                       getActivity().getContentResolver(), Settings.System.AIRPLANE_MODE_ON, 0)
    934                   != 0;
    935           if (isAirplaneModeOn) {
    936             DialogFragment dialogFragment =
    937                 ErrorDialogFragment.newInstance(R.string.dialog_voicemail_airplane_mode_message);
    938             dialogFragment.show(getFragmentManager(), "voicemail_request_during_airplane_mode");
    939           } else {
    940             DialogFragment dialogFragment =
    941                 ErrorDialogFragment.newInstance(R.string.dialog_voicemail_not_ready_message);
    942             dialogFragment.show(getFragmentManager(), "voicemail_not_ready");
    943           }
    944         }
    945         return true;
    946       }
    947       return false;
    948     } else if (id == R.id.zero) {
    949       if (mPressedDialpadKeys.contains(view)) {
    950         // If the zero key is currently pressed, then the long press occurred by touch
    951         // (and not via other means like certain accessibility input methods).
    952         // Remove the '0' that was input when the key was first pressed.
    953         removePreviousDigitIfPossible('0');
    954       }
    955       keyPressed(KeyEvent.KEYCODE_PLUS);
    956       stopTone();
    957       mPressedDialpadKeys.remove(view);
    958       return true;
    959     } else if (id == R.id.digits) {
    960       mDigits.setCursorVisible(true);
    961       return false;
    962     }
    963     return false;
    964   }
    965 
    966   /**
    967    * Remove the digit just before the current position of the cursor, iff the following conditions
    968    * are true: 1) The cursor is not positioned at index 0. 2) The digit before the current cursor
    969    * position matches the current digit.
    970    *
    971    * @param digit to remove from the digits view.
    972    */
    973   private void removePreviousDigitIfPossible(char digit) {
    974     final int currentPosition = mDigits.getSelectionStart();
    975     if (currentPosition > 0 && digit == mDigits.getText().charAt(currentPosition - 1)) {
    976       mDigits.setSelection(currentPosition);
    977       mDigits.getText().delete(currentPosition - 1, currentPosition);
    978     }
    979   }
    980 
    981   public void callVoicemail() {
    982     DialerUtils.startActivityWithErrorToast(
    983         getActivity(),
    984         new CallIntentBuilder(CallUtil.getVoicemailUri(), CallInitiationType.Type.DIALPAD).build());
    985     hideAndClearDialpad(false);
    986   }
    987 
    988   private void hideAndClearDialpad(boolean animate) {
    989     ((DialtactsActivity) getActivity()).hideDialpadFragment(animate, true);
    990   }
    991 
    992   /**
    993    * In most cases, when the dial button is pressed, there is a number in digits area. Pack it in
    994    * the intent, start the outgoing call broadcast as a separate task and finish this activity.
    995    *
    996    * <p>When there is no digit and the phone is CDMA and off hook, we're sending a blank flash for
    997    * CDMA. CDMA networks use Flash messages when special processing needs to be done, mainly for
    998    * 3-way or call waiting scenarios. Presumably, here we're in a special 3-way scenario where the
    999    * network needs a blank flash before being able to add the new participant. (This is not the case
   1000    * with all 3-way calls, just certain CDMA infrastructures.)
   1001    *
   1002    * <p>Otherwise, there is no digit, display the last dialed number. Don't finish since the user
   1003    * may want to edit it. The user needs to press the dial button again, to dial it (general case
   1004    * described above).
   1005    */
   1006   private void handleDialButtonPressed() {
   1007     if (isDigitsEmpty()) { // No number entered.
   1008       handleDialButtonClickWithEmptyDigits();
   1009     } else {
   1010       final String number = mDigits.getText().toString();
   1011 
   1012       // "persist.radio.otaspdial" is a temporary hack needed for one carrier's automated
   1013       // test equipment.
   1014       // TODO: clean it up.
   1015       if (number != null
   1016           && !TextUtils.isEmpty(mProhibitedPhoneNumberRegexp)
   1017           && number.matches(mProhibitedPhoneNumberRegexp)) {
   1018         LogUtil.i(
   1019             "DialpadFragment.handleDialButtonPressed",
   1020             "The phone number is prohibited explicitly by a rule.");
   1021         if (getActivity() != null) {
   1022           DialogFragment dialogFragment =
   1023               ErrorDialogFragment.newInstance(R.string.dialog_phone_call_prohibited_message);
   1024           dialogFragment.show(getFragmentManager(), "phone_prohibited_dialog");
   1025         }
   1026 
   1027         // Clear the digits just in case.
   1028         clearDialpad();
   1029       } else {
   1030         final Intent intent =
   1031             new CallIntentBuilder(number, CallInitiationType.Type.DIALPAD).build();
   1032         DialerUtils.startActivityWithErrorToast(getActivity(), intent);
   1033         hideAndClearDialpad(false);
   1034       }
   1035     }
   1036   }
   1037 
   1038   public void clearDialpad() {
   1039     if (mDigits != null) {
   1040       mDigits.getText().clear();
   1041     }
   1042   }
   1043 
   1044   private void handleDialButtonClickWithEmptyDigits() {
   1045     if (phoneIsCdma() && isPhoneInUse()) {
   1046       // TODO: Move this logic into services/Telephony
   1047       //
   1048       // This is really CDMA specific. On GSM is it possible
   1049       // to be off hook and wanted to add a 3rd party using
   1050       // the redial feature.
   1051       startActivity(newFlashIntent());
   1052     } else {
   1053       if (!TextUtils.isEmpty(mLastNumberDialed)) {
   1054         // Recall the last number dialed.
   1055         mDigits.setText(mLastNumberDialed);
   1056 
   1057         // ...and move the cursor to the end of the digits string,
   1058         // so you'll be able to delete digits using the Delete
   1059         // button (just as if you had typed the number manually.)
   1060         //
   1061         // Note we use mDigits.getText().length() here, not
   1062         // mLastNumberDialed.length(), since the EditText widget now
   1063         // contains a *formatted* version of mLastNumberDialed (due to
   1064         // mTextWatcher) and its length may have changed.
   1065         mDigits.setSelection(mDigits.getText().length());
   1066       } else {
   1067         // There's no "last number dialed" or the
   1068         // background query is still running. There's
   1069         // nothing useful for the Dial button to do in
   1070         // this case.  Note: with a soft dial button, this
   1071         // can never happens since the dial button is
   1072         // disabled under these conditons.
   1073         playTone(ToneGenerator.TONE_PROP_NACK);
   1074       }
   1075     }
   1076   }
   1077 
   1078   /** Plays the specified tone for TONE_LENGTH_MS milliseconds. */
   1079   private void playTone(int tone) {
   1080     playTone(tone, TONE_LENGTH_MS);
   1081   }
   1082 
   1083   /**
   1084    * Play the specified tone for the specified milliseconds
   1085    *
   1086    * <p>The tone is played locally, using the audio stream for phone calls. Tones are played only if
   1087    * the "Audible touch tones" user preference is checked, and are NOT played if the device is in
   1088    * silent mode.
   1089    *
   1090    * <p>The tone length can be -1, meaning "keep playing the tone." If the caller does so, it should
   1091    * call stopTone() afterward.
   1092    *
   1093    * @param tone a tone code from {@link ToneGenerator}
   1094    * @param durationMs tone length.
   1095    */
   1096   private void playTone(int tone, int durationMs) {
   1097     // if local tone playback is disabled, just return.
   1098     if (!mDTMFToneEnabled) {
   1099       return;
   1100     }
   1101 
   1102     // Also do nothing if the phone is in silent mode.
   1103     // We need to re-check the ringer mode for *every* playTone()
   1104     // call, rather than keeping a local flag that's updated in
   1105     // onResume(), since it's possible to toggle silent mode without
   1106     // leaving the current activity (via the ENDCALL-longpress menu.)
   1107     AudioManager audioManager =
   1108         (AudioManager) getActivity().getSystemService(Context.AUDIO_SERVICE);
   1109     int ringerMode = audioManager.getRingerMode();
   1110     if ((ringerMode == AudioManager.RINGER_MODE_SILENT)
   1111         || (ringerMode == AudioManager.RINGER_MODE_VIBRATE)) {
   1112       return;
   1113     }
   1114 
   1115     synchronized (mToneGeneratorLock) {
   1116       if (mToneGenerator == null) {
   1117         LogUtil.w("DialpadFragment.playTone", "mToneGenerator == null, tone: " + tone);
   1118         return;
   1119       }
   1120 
   1121       // Start the new tone (will stop any playing tone)
   1122       mToneGenerator.startTone(tone, durationMs);
   1123     }
   1124   }
   1125 
   1126   /** Stop the tone if it is played. */
   1127   private void stopTone() {
   1128     // if local tone playback is disabled, just return.
   1129     if (!mDTMFToneEnabled) {
   1130       return;
   1131     }
   1132     synchronized (mToneGeneratorLock) {
   1133       if (mToneGenerator == null) {
   1134         LogUtil.w("DialpadFragment.stopTone", "mToneGenerator == null");
   1135         return;
   1136       }
   1137       mToneGenerator.stopTone();
   1138     }
   1139   }
   1140 
   1141   /**
   1142    * Brings up the "dialpad chooser" UI in place of the usual Dialer elements (the textfield/button
   1143    * and the dialpad underneath).
   1144    *
   1145    * <p>We show this UI if the user brings up the Dialer while a call is already in progress, since
   1146    * there's a good chance we got here accidentally (and the user really wanted the in-call dialpad
   1147    * instead). So in this situation we display an intermediate UI that lets the user explicitly
   1148    * choose between the in-call dialpad ("Use touch tone keypad") and the regular Dialer ("Add
   1149    * call"). (Or, the option "Return to call in progress" just goes back to the in-call UI with no
   1150    * dialpad at all.)
   1151    *
   1152    * @param enabled If true, show the "dialpad chooser" instead of the regular Dialer UI
   1153    */
   1154   private void showDialpadChooser(boolean enabled) {
   1155     if (getActivity() == null) {
   1156       return;
   1157     }
   1158     // Check if onCreateView() is already called by checking one of View objects.
   1159     if (!isLayoutReady()) {
   1160       return;
   1161     }
   1162 
   1163     if (enabled) {
   1164       LogUtil.i("DialpadFragment.showDialpadChooser", "Showing dialpad chooser!");
   1165       if (mDialpadView != null) {
   1166         mDialpadView.setVisibility(View.GONE);
   1167       }
   1168 
   1169       mFloatingActionButtonController.setVisible(false);
   1170       mDialpadChooser.setVisibility(View.VISIBLE);
   1171 
   1172       // Instantiate the DialpadChooserAdapter and hook it up to the
   1173       // ListView.  We do this only once.
   1174       if (mDialpadChooserAdapter == null) {
   1175         mDialpadChooserAdapter = new DialpadChooserAdapter(getActivity());
   1176       }
   1177       mDialpadChooser.setAdapter(mDialpadChooserAdapter);
   1178     } else {
   1179       LogUtil.i("DialpadFragment.showDialpadChooser", "Displaying normal Dialer UI.");
   1180       if (mDialpadView != null) {
   1181         mDialpadView.setVisibility(View.VISIBLE);
   1182       } else {
   1183         mDigits.setVisibility(View.VISIBLE);
   1184       }
   1185 
   1186       // mFloatingActionButtonController must also be 'scaled in', in order to be visible after
   1187       // 'scaleOut()' hidden method.
   1188       if (!mFloatingActionButtonController.isVisible()) {
   1189         // Just call 'scaleIn()' method if the mFloatingActionButtonController was not already
   1190         // previously visible.
   1191         mFloatingActionButtonController.scaleIn(0);
   1192       }
   1193       mDialpadChooser.setVisibility(View.GONE);
   1194     }
   1195   }
   1196 
   1197   /** @return true if we're currently showing the "dialpad chooser" UI. */
   1198   private boolean isDialpadChooserVisible() {
   1199     return mDialpadChooser.getVisibility() == View.VISIBLE;
   1200   }
   1201 
   1202   /** Handle clicks from the dialpad chooser. */
   1203   @Override
   1204   public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
   1205     DialpadChooserAdapter.ChoiceItem item =
   1206         (DialpadChooserAdapter.ChoiceItem) parent.getItemAtPosition(position);
   1207     int itemId = item.id;
   1208     if (itemId == DialpadChooserAdapter.DIALPAD_CHOICE_USE_DTMF_DIALPAD) {
   1209       // Fire off an intent to go back to the in-call UI
   1210       // with the dialpad visible.
   1211       returnToInCallScreen(true);
   1212     } else if (itemId == DialpadChooserAdapter.DIALPAD_CHOICE_RETURN_TO_CALL) {
   1213       // Fire off an intent to go back to the in-call UI
   1214       // (with the dialpad hidden).
   1215       returnToInCallScreen(false);
   1216     } else if (itemId == DialpadChooserAdapter.DIALPAD_CHOICE_ADD_NEW_CALL) {
   1217       // Ok, guess the user really did want to be here (in the
   1218       // regular Dialer) after all.  Bring back the normal Dialer UI.
   1219       showDialpadChooser(false);
   1220     } else {
   1221       LogUtil.w("DialpadFragment.onItemClick", "Unexpected itemId: " + itemId);
   1222     }
   1223   }
   1224 
   1225   /**
   1226    * Returns to the in-call UI (where there's presumably a call in progress) in response to the user
   1227    * selecting "use touch tone keypad" or "return to call" from the dialpad chooser.
   1228    */
   1229   private void returnToInCallScreen(boolean showDialpad) {
   1230     TelecomUtil.showInCallScreen(getActivity(), showDialpad);
   1231 
   1232     // Finally, finish() ourselves so that we don't stay on the
   1233     // activity stack.
   1234     // Note that we do this whether or not the showCallScreenWithDialpad()
   1235     // call above had any effect or not!  (That call is a no-op if the
   1236     // phone is idle, which can happen if the current call ends while
   1237     // the dialpad chooser is up.  In this case we can't show the
   1238     // InCallScreen, and there's no point staying here in the Dialer,
   1239     // so we just take the user back where he came from...)
   1240     getActivity().finish();
   1241   }
   1242 
   1243   /**
   1244    * @return true if the phone is "in use", meaning that at least one line is active (ie. off hook
   1245    *     or ringing or dialing, or on hold).
   1246    */
   1247   private boolean isPhoneInUse() {
   1248     final Context context = getActivity();
   1249     if (context != null) {
   1250       return TelecomUtil.isInCall(context);
   1251     }
   1252     return false;
   1253   }
   1254 
   1255   /** @return true if the phone is a CDMA phone type */
   1256   private boolean phoneIsCdma() {
   1257     return getTelephonyManager().getPhoneType() == TelephonyManager.PHONE_TYPE_CDMA;
   1258   }
   1259 
   1260   @Override
   1261   public boolean onMenuItemClick(MenuItem item) {
   1262     int resId = item.getItemId();
   1263     if (resId == R.id.menu_2s_pause) {
   1264       updateDialString(PAUSE);
   1265       return true;
   1266     } else if (resId == R.id.menu_add_wait) {
   1267       updateDialString(WAIT);
   1268       return true;
   1269     } else if (resId == R.id.menu_call_with_note) {
   1270       CallSubjectDialog.start(getActivity(), mDigits.getText().toString());
   1271       hideAndClearDialpad(false);
   1272       return true;
   1273     } else {
   1274       return false;
   1275     }
   1276   }
   1277 
   1278   /**
   1279    * Updates the dial string (mDigits) after inserting a Pause character (,) or Wait character (;).
   1280    */
   1281   private void updateDialString(char newDigit) {
   1282     if (newDigit != WAIT && newDigit != PAUSE) {
   1283       throw new IllegalArgumentException("Not expected for anything other than PAUSE & WAIT");
   1284     }
   1285 
   1286     int selectionStart;
   1287     int selectionEnd;
   1288 
   1289     // SpannableStringBuilder editable_text = new SpannableStringBuilder(mDigits.getText());
   1290     int anchor = mDigits.getSelectionStart();
   1291     int point = mDigits.getSelectionEnd();
   1292 
   1293     selectionStart = Math.min(anchor, point);
   1294     selectionEnd = Math.max(anchor, point);
   1295 
   1296     if (selectionStart == -1) {
   1297       selectionStart = selectionEnd = mDigits.length();
   1298     }
   1299 
   1300     Editable digits = mDigits.getText();
   1301 
   1302     if (canAddDigit(digits, selectionStart, selectionEnd, newDigit)) {
   1303       digits.replace(selectionStart, selectionEnd, Character.toString(newDigit));
   1304 
   1305       if (selectionStart != selectionEnd) {
   1306         // Unselect: back to a regular cursor, just pass the character inserted.
   1307         mDigits.setSelection(selectionStart + 1);
   1308       }
   1309     }
   1310   }
   1311 
   1312   /** Update the enabledness of the "Dial" and "Backspace" buttons if applicable. */
   1313   private void updateDeleteButtonEnabledState() {
   1314     if (getActivity() == null) {
   1315       return;
   1316     }
   1317     final boolean digitsNotEmpty = !isDigitsEmpty();
   1318     mDelete.setEnabled(digitsNotEmpty);
   1319   }
   1320 
   1321   /**
   1322    * Handle transitions for the menu button depending on the state of the digits edit text.
   1323    * Transition out when going from digits to no digits and transition in when the first digit is
   1324    * pressed.
   1325    *
   1326    * @param transitionIn True if transitioning in, False if transitioning out
   1327    */
   1328   private void updateMenuOverflowButton(boolean transitionIn) {
   1329     mOverflowMenuButton = mDialpadView.getOverflowMenuButton();
   1330     if (transitionIn) {
   1331       AnimUtils.fadeIn(mOverflowMenuButton, AnimUtils.DEFAULT_DURATION);
   1332     } else {
   1333       AnimUtils.fadeOut(mOverflowMenuButton, AnimUtils.DEFAULT_DURATION);
   1334     }
   1335   }
   1336 
   1337   /**
   1338    * Check if voicemail is enabled/accessible.
   1339    *
   1340    * @return true if voicemail is enabled and accessible. Note that this can be false "temporarily"
   1341    *     after the app boot.
   1342    */
   1343   private boolean isVoicemailAvailable() {
   1344     try {
   1345       PhoneAccountHandle defaultUserSelectedAccount =
   1346           TelecomUtil.getDefaultOutgoingPhoneAccount(getActivity(), PhoneAccount.SCHEME_VOICEMAIL);
   1347       if (defaultUserSelectedAccount == null) {
   1348         // In a single-SIM phone, there is no default outgoing phone account selected by
   1349         // the user, so just call TelephonyManager#getVoicemailNumber directly.
   1350         return !TextUtils.isEmpty(getTelephonyManager().getVoiceMailNumber());
   1351       } else {
   1352         return !TextUtils.isEmpty(
   1353             TelecomUtil.getVoicemailNumber(getActivity(), defaultUserSelectedAccount));
   1354       }
   1355     } catch (SecurityException se) {
   1356       // Possibly no READ_PHONE_STATE privilege.
   1357       LogUtil.w(
   1358           "DialpadFragment.isVoicemailAvailable",
   1359           "SecurityException is thrown. Maybe privilege isn't sufficient.");
   1360     }
   1361     return false;
   1362   }
   1363 
   1364   /** @return true if the widget with the phone number digits is empty. */
   1365   private boolean isDigitsEmpty() {
   1366     return mDigits.length() == 0;
   1367   }
   1368 
   1369   /**
   1370    * Starts the asyn query to get the last dialed/outgoing number. When the background query
   1371    * finishes, mLastNumberDialed is set to the last dialed number or an empty string if none exists
   1372    * yet.
   1373    */
   1374   private void queryLastOutgoingCall() {
   1375     mLastNumberDialed = EMPTY_NUMBER;
   1376     if (ContextCompat.checkSelfPermission(getActivity(), permission.READ_CALL_LOG)
   1377         != PackageManager.PERMISSION_GRANTED) {
   1378       return;
   1379     }
   1380     CallLogAsync.GetLastOutgoingCallArgs lastCallArgs =
   1381         new CallLogAsync.GetLastOutgoingCallArgs(
   1382             getActivity(),
   1383             new CallLogAsync.OnLastOutgoingCallComplete() {
   1384               @Override
   1385               public void lastOutgoingCall(String number) {
   1386                 // TODO: Filter out emergency numbers if
   1387                 // the carrier does not want redial for
   1388                 // these.
   1389                 // If the fragment has already been detached since the last time
   1390                 // we called queryLastOutgoingCall in onResume there is no point
   1391                 // doing anything here.
   1392                 if (getActivity() == null) {
   1393                   return;
   1394                 }
   1395                 mLastNumberDialed = number;
   1396                 updateDeleteButtonEnabledState();
   1397               }
   1398             });
   1399     mCallLog.getLastOutgoingCall(lastCallArgs);
   1400   }
   1401 
   1402   private Intent newFlashIntent() {
   1403     Intent intent = new CallIntentBuilder(EMPTY_NUMBER, CallInitiationType.Type.DIALPAD).build();
   1404     intent.putExtra(EXTRA_SEND_EMPTY_FLASH, true);
   1405     return intent;
   1406   }
   1407 
   1408   @Override
   1409   public void onHiddenChanged(boolean hidden) {
   1410     super.onHiddenChanged(hidden);
   1411     final DialtactsActivity activity = (DialtactsActivity) getActivity();
   1412     if (activity == null || getView() == null) {
   1413       return;
   1414     }
   1415     final DialpadView dialpadView = (DialpadView) getView().findViewById(R.id.dialpad_view);
   1416     if (!hidden && !isDialpadChooserVisible()) {
   1417       if (mAnimate) {
   1418         dialpadView.animateShow();
   1419       }
   1420       mFloatingActionButtonController.setVisible(false);
   1421       mFloatingActionButtonController.scaleIn(mAnimate ? mDialpadSlideInDuration : 0);
   1422       activity.onDialpadShown();
   1423       mDigits.requestFocus();
   1424     }
   1425     if (hidden) {
   1426       if (mAnimate) {
   1427         mFloatingActionButtonController.scaleOut();
   1428       } else {
   1429         mFloatingActionButtonController.setVisible(false);
   1430       }
   1431     }
   1432   }
   1433 
   1434   public boolean getAnimate() {
   1435     return mAnimate;
   1436   }
   1437 
   1438   public void setAnimate(boolean value) {
   1439     mAnimate = value;
   1440   }
   1441 
   1442   public void setYFraction(float yFraction) {
   1443     ((DialpadSlidingRelativeLayout) getView()).setYFraction(yFraction);
   1444   }
   1445 
   1446   public int getDialpadHeight() {
   1447     if (mDialpadView == null) {
   1448       return 0;
   1449     }
   1450     return mDialpadView.getHeight();
   1451   }
   1452 
   1453   public void process_quote_emergency_unquote(String query) {
   1454     if (PseudoEmergencyAnimator.PSEUDO_EMERGENCY_NUMBER.equals(query)) {
   1455       if (mPseudoEmergencyAnimator == null) {
   1456         mPseudoEmergencyAnimator =
   1457             new PseudoEmergencyAnimator(
   1458                 new PseudoEmergencyAnimator.ViewProvider() {
   1459                   @Override
   1460                   public View getView() {
   1461                     return DialpadFragment.this.getView();
   1462                   }
   1463                 });
   1464       }
   1465       mPseudoEmergencyAnimator.start();
   1466     } else {
   1467       if (mPseudoEmergencyAnimator != null) {
   1468         mPseudoEmergencyAnimator.end();
   1469       }
   1470     }
   1471   }
   1472 
   1473   public interface OnDialpadQueryChangedListener {
   1474 
   1475     void onDialpadQueryChanged(String query);
   1476   }
   1477 
   1478   public interface HostInterface {
   1479 
   1480     /**
   1481      * Notifies the parent activity that the space above the dialpad has been tapped with no query
   1482      * in the dialpad present. In most situations this will cause the dialpad to be dismissed,
   1483      * unless there happens to be content showing.
   1484      */
   1485     boolean onDialpadSpacerTouchWithEmptyQuery();
   1486   }
   1487 
   1488   /**
   1489    * LinearLayout with getter and setter methods for the translationY property using floats, for
   1490    * animation purposes.
   1491    */
   1492   public static class DialpadSlidingRelativeLayout extends RelativeLayout {
   1493 
   1494     public DialpadSlidingRelativeLayout(Context context) {
   1495       super(context);
   1496     }
   1497 
   1498     public DialpadSlidingRelativeLayout(Context context, AttributeSet attrs) {
   1499       super(context, attrs);
   1500     }
   1501 
   1502     public DialpadSlidingRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
   1503       super(context, attrs, defStyle);
   1504     }
   1505 
   1506     @UsedByReflection(value = "dialpad_fragment.xml")
   1507     public float getYFraction() {
   1508       final int height = getHeight();
   1509       if (height == 0) {
   1510         return 0;
   1511       }
   1512       return getTranslationY() / height;
   1513     }
   1514 
   1515     @UsedByReflection(value = "dialpad_fragment.xml")
   1516     public void setYFraction(float yFraction) {
   1517       setTranslationY(yFraction * getHeight());
   1518     }
   1519   }
   1520 
   1521   public static class ErrorDialogFragment extends DialogFragment {
   1522 
   1523     private static final String ARG_TITLE_RES_ID = "argTitleResId";
   1524     private static final String ARG_MESSAGE_RES_ID = "argMessageResId";
   1525     private int mTitleResId;
   1526     private int mMessageResId;
   1527 
   1528     public static ErrorDialogFragment newInstance(int messageResId) {
   1529       return newInstance(0, messageResId);
   1530     }
   1531 
   1532     public static ErrorDialogFragment newInstance(int titleResId, int messageResId) {
   1533       final ErrorDialogFragment fragment = new ErrorDialogFragment();
   1534       final Bundle args = new Bundle();
   1535       args.putInt(ARG_TITLE_RES_ID, titleResId);
   1536       args.putInt(ARG_MESSAGE_RES_ID, messageResId);
   1537       fragment.setArguments(args);
   1538       return fragment;
   1539     }
   1540 
   1541     @Override
   1542     public void onCreate(Bundle savedInstanceState) {
   1543       super.onCreate(savedInstanceState);
   1544       mTitleResId = getArguments().getInt(ARG_TITLE_RES_ID);
   1545       mMessageResId = getArguments().getInt(ARG_MESSAGE_RES_ID);
   1546     }
   1547 
   1548     @Override
   1549     public Dialog onCreateDialog(Bundle savedInstanceState) {
   1550       AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
   1551       if (mTitleResId != 0) {
   1552         builder.setTitle(mTitleResId);
   1553       }
   1554       if (mMessageResId != 0) {
   1555         builder.setMessage(mMessageResId);
   1556       }
   1557       builder.setPositiveButton(
   1558           android.R.string.ok,
   1559           new DialogInterface.OnClickListener() {
   1560             @Override
   1561             public void onClick(DialogInterface dialog, int which) {
   1562               dismiss();
   1563             }
   1564           });
   1565       return builder.create();
   1566     }
   1567   }
   1568 
   1569   /**
   1570    * Simple list adapter, binding to an icon + text label for each item in the "dialpad chooser"
   1571    * list.
   1572    */
   1573   private static class DialpadChooserAdapter extends BaseAdapter {
   1574 
   1575     // IDs for the possible "choices":
   1576     static final int DIALPAD_CHOICE_USE_DTMF_DIALPAD = 101;
   1577     static final int DIALPAD_CHOICE_RETURN_TO_CALL = 102;
   1578     static final int DIALPAD_CHOICE_ADD_NEW_CALL = 103;
   1579     private static final int NUM_ITEMS = 3;
   1580     private LayoutInflater mInflater;
   1581     private ChoiceItem[] mChoiceItems = new ChoiceItem[NUM_ITEMS];
   1582 
   1583     public DialpadChooserAdapter(Context context) {
   1584       // Cache the LayoutInflate to avoid asking for a new one each time.
   1585       mInflater = LayoutInflater.from(context);
   1586 
   1587       // Initialize the possible choices.
   1588       // TODO: could this be specified entirely in XML?
   1589 
   1590       // - "Use touch tone keypad"
   1591       mChoiceItems[0] =
   1592           new ChoiceItem(
   1593               context.getString(R.string.dialer_useDtmfDialpad),
   1594               BitmapFactory.decodeResource(
   1595                   context.getResources(), R.drawable.ic_dialer_fork_tt_keypad),
   1596               DIALPAD_CHOICE_USE_DTMF_DIALPAD);
   1597 
   1598       // - "Return to call in progress"
   1599       mChoiceItems[1] =
   1600           new ChoiceItem(
   1601               context.getString(R.string.dialer_returnToInCallScreen),
   1602               BitmapFactory.decodeResource(
   1603                   context.getResources(), R.drawable.ic_dialer_fork_current_call),
   1604               DIALPAD_CHOICE_RETURN_TO_CALL);
   1605 
   1606       // - "Add call"
   1607       mChoiceItems[2] =
   1608           new ChoiceItem(
   1609               context.getString(R.string.dialer_addAnotherCall),
   1610               BitmapFactory.decodeResource(
   1611                   context.getResources(), R.drawable.ic_dialer_fork_add_call),
   1612               DIALPAD_CHOICE_ADD_NEW_CALL);
   1613     }
   1614 
   1615     @Override
   1616     public int getCount() {
   1617       return NUM_ITEMS;
   1618     }
   1619 
   1620     /** Return the ChoiceItem for a given position. */
   1621     @Override
   1622     public Object getItem(int position) {
   1623       return mChoiceItems[position];
   1624     }
   1625 
   1626     /** Return a unique ID for each possible choice. */
   1627     @Override
   1628     public long getItemId(int position) {
   1629       return position;
   1630     }
   1631 
   1632     /** Make a view for each row. */
   1633     @Override
   1634     public View getView(int position, View convertView, ViewGroup parent) {
   1635       // When convertView is non-null, we can reuse it (there's no need
   1636       // to reinflate it.)
   1637       if (convertView == null) {
   1638         convertView = mInflater.inflate(R.layout.dialpad_chooser_list_item, null);
   1639       }
   1640 
   1641       TextView text = (TextView) convertView.findViewById(R.id.text);
   1642       text.setText(mChoiceItems[position].text);
   1643 
   1644       ImageView icon = (ImageView) convertView.findViewById(R.id.icon);
   1645       icon.setImageBitmap(mChoiceItems[position].icon);
   1646 
   1647       return convertView;
   1648     }
   1649 
   1650     // Simple struct for a single "choice" item.
   1651     static class ChoiceItem {
   1652 
   1653       String text;
   1654       Bitmap icon;
   1655       int id;
   1656 
   1657       public ChoiceItem(String s, Bitmap b, int i) {
   1658         text = s;
   1659         icon = b;
   1660         id = i;
   1661       }
   1662     }
   1663   }
   1664 
   1665   private class CallStateReceiver extends BroadcastReceiver {
   1666 
   1667     /**
   1668      * Receive call state changes so that we can take down the "dialpad chooser" if the phone
   1669      * becomes idle while the chooser UI is visible.
   1670      */
   1671     @Override
   1672     public void onReceive(Context context, Intent intent) {
   1673       String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
   1674       if ((TextUtils.equals(state, TelephonyManager.EXTRA_STATE_IDLE)
   1675               || TextUtils.equals(state, TelephonyManager.EXTRA_STATE_OFFHOOK))
   1676           && isDialpadChooserVisible()) {
   1677         // Note there's a race condition in the UI here: the
   1678         // dialpad chooser could conceivably disappear (on its
   1679         // own) at the exact moment the user was trying to select
   1680         // one of the choices, which would be confusing.  (But at
   1681         // least that's better than leaving the dialpad chooser
   1682         // onscreen, but useless...)
   1683         showDialpadChooser(false);
   1684       }
   1685     }
   1686   }
   1687 }
   1688