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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 com.android.phone.R;
     20 
     21 import android.app.AlertDialog;
     22 import android.content.Context;
     23 import android.content.DialogInterface;
     24 import android.content.Intent;
     25 import android.content.pm.PackageManager;
     26 import android.os.UserHandle;
     27 import android.preference.ListPreference;
     28 import android.preference.Preference;
     29 import android.telecom.PhoneAccount;
     30 import android.telecom.PhoneAccountHandle;
     31 import android.telecom.TelecomManager;
     32 import android.text.TextUtils;
     33 import android.util.AttributeSet;
     34 
     35 import java.util.List;
     36 import java.util.Objects;
     37 
     38 public class AccountSelectionPreference extends ListPreference implements
     39         Preference.OnPreferenceChangeListener {
     40 
     41     public interface AccountSelectionListener {
     42         boolean onAccountSelected(AccountSelectionPreference pref, PhoneAccountHandle account);
     43         void onAccountSelectionDialogShow(AccountSelectionPreference pref);
     44         void onAccountChanged(AccountSelectionPreference pref);
     45     }
     46 
     47     private final Context mContext;
     48     private AccountSelectionListener mListener;
     49     private PhoneAccountHandle[] mAccounts;
     50     private String[] mEntryValues;
     51     private CharSequence[] mEntries;
     52     private boolean mShowSelectionInSummary = true;
     53 
     54     public AccountSelectionPreference(Context context) {
     55         this(context, null);
     56     }
     57 
     58     public AccountSelectionPreference(Context context, AttributeSet attrs) {
     59         super(context, attrs);
     60         mContext = context;
     61         setOnPreferenceChangeListener(this);
     62     }
     63 
     64     public void setListener(AccountSelectionListener listener) {
     65         mListener = listener;
     66     }
     67 
     68     public void setShowSelectionInSummary(boolean value) {
     69         mShowSelectionInSummary = value;
     70     }
     71 
     72     public void setModel(
     73             TelecomManager telecomManager,
     74             List<PhoneAccountHandle> accountsList,
     75             PhoneAccountHandle currentSelection,
     76             CharSequence nullSelectionString) {
     77 
     78         mAccounts = accountsList.toArray(new PhoneAccountHandle[accountsList.size()]);
     79         mEntryValues = new String[mAccounts.length + 1];
     80         mEntries = new CharSequence[mAccounts.length + 1];
     81 
     82         PackageManager pm = mContext.getPackageManager();
     83 
     84         int selectedIndex = mAccounts.length;  // Points to nullSelectionString by default
     85         int i = 0;
     86         for ( ; i < mAccounts.length; i++) {
     87             PhoneAccount account = telecomManager.getPhoneAccount(mAccounts[i]);
     88             CharSequence label = account.getLabel();
     89             if (label != null) {
     90                 label = pm.getUserBadgedLabel(label, mAccounts[i].getUserHandle());
     91             }
     92             boolean isSimAccount =
     93                     account.hasCapabilities(PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION);
     94             mEntries[i] = (TextUtils.isEmpty(label) && isSimAccount)
     95                     ? mContext.getString(R.string.phone_accounts_default_account_label)
     96                     : String.valueOf(label);
     97             mEntryValues[i] = Integer.toString(i);
     98             if (Objects.equals(currentSelection, mAccounts[i])) {
     99                 selectedIndex = i;
    100             }
    101         }
    102         mEntryValues[i] = Integer.toString(i);
    103         mEntries[i] = nullSelectionString;
    104 
    105         setEntryValues(mEntryValues);
    106         setEntries(mEntries);
    107         setValueIndex(selectedIndex);
    108         if (mShowSelectionInSummary) {
    109             setSummary(mEntries[selectedIndex]);
    110         }
    111     }
    112 
    113     @Override
    114     public boolean onPreferenceChange(Preference preference, Object newValue) {
    115         if (mListener != null) {
    116             int index = Integer.parseInt((String) newValue);
    117             PhoneAccountHandle account = index < mAccounts.length ? mAccounts[index] : null;
    118             if (mListener.onAccountSelected(this, account)) {
    119                 if (mShowSelectionInSummary) {
    120                     setSummary(mEntries[index]);
    121                 }
    122                 if (index != findIndexOfValue(getValue())) {
    123                     setValueIndex(index);
    124                     mListener.onAccountChanged(this);
    125                 }
    126                 return true;
    127             }
    128         }
    129         return false;
    130     }
    131 
    132     /**
    133      * Modifies the dialog to change the default "Cancel" button to "Choose Accounts", which
    134      * triggers the {@link PhoneAccountSelectionPreferenceActivity} to be shown.
    135      *
    136      * @param builder The {@code AlertDialog.Builder}.
    137      */
    138     @Override
    139     protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
    140         // Notify the listener that the dialog is about to be built.  This is important so that the
    141         // list of enabled accounts can be updated prior to showing the dialog.
    142         mListener.onAccountSelectionDialogShow(this);
    143 
    144         super.onPrepareDialogBuilder(builder);
    145     }
    146 }
    147