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