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      1 /*
      2  * Copyright (C) 2015 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.contacts.preference;
     18 
     19 import android.app.AlertDialog;
     20 import android.content.Context;
     21 import android.content.DialogInterface;
     22 import android.preference.DialogPreference;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 
     26 import com.android.contacts.model.account.AccountInfo;
     27 import com.android.contacts.model.account.AccountWithDataSet;
     28 import com.android.contacts.util.AccountsListAdapter;
     29 
     30 import java.util.List;
     31 
     32 public class DefaultAccountPreference extends DialogPreference {
     33     private ContactsPreferences mPreferences;
     34     private AccountsListAdapter mListAdapter;
     35     private List<AccountInfo> mAccounts;
     36     private int mChosenIndex = -1;
     37 
     38     public DefaultAccountPreference(Context context) {
     39         super(context);
     40         prepare();
     41     }
     42 
     43     public DefaultAccountPreference(Context context, AttributeSet attrs) {
     44         super(context, attrs);
     45         prepare();
     46     }
     47 
     48     public void setAccounts(List<AccountInfo> accounts) {
     49         mAccounts = accounts;
     50         if (mListAdapter != null) {
     51             mListAdapter.setAccounts(accounts, null);
     52             notifyChanged();
     53         }
     54     }
     55 
     56     @Override
     57     protected View onCreateDialogView() {
     58         prepare();
     59         return super.onCreateDialogView();
     60     }
     61 
     62     private void prepare() {
     63         mPreferences = new ContactsPreferences(getContext());
     64         mListAdapter = new AccountsListAdapter(getContext());
     65         if (mAccounts != null) {
     66             mListAdapter.setAccounts(mAccounts, null);
     67         }
     68     }
     69 
     70     @Override
     71     protected boolean shouldPersist() {
     72         return false;   // This preference takes care of its own storage
     73     }
     74 
     75     @Override
     76     public CharSequence getSummary() {
     77         final AccountWithDataSet defaultAccount = mPreferences.getDefaultAccount();
     78         if (defaultAccount == null || mAccounts == null ||
     79                 !AccountInfo.contains(mAccounts, defaultAccount)) {
     80             return null;
     81         } else {
     82             return AccountInfo.getAccount(mAccounts, defaultAccount).getNameLabel();
     83         }
     84     }
     85 
     86     @Override
     87     protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
     88         super.onPrepareDialogBuilder(builder);
     89         // UX recommendation is not to show buttons on such lists.
     90         builder.setNegativeButton(null, null);
     91         builder.setPositiveButton(null, null);
     92         builder.setAdapter(mListAdapter, new DialogInterface.OnClickListener() {
     93             @Override
     94             public void onClick(DialogInterface dialog, int which) {
     95                 mChosenIndex = which;
     96             }
     97         });
     98     }
     99 
    100     @Override
    101     protected void onDialogClosed(boolean positiveResult) {
    102         final AccountWithDataSet currentDefault = mPreferences.getDefaultAccount();
    103 
    104         if (mChosenIndex != -1) {
    105             final AccountWithDataSet chosenAccount = mListAdapter.getItem(mChosenIndex);
    106             if (!chosenAccount.equals(currentDefault)) {
    107                 mPreferences.setDefaultAccount(chosenAccount);
    108                 notifyChanged();
    109             }
    110         } // else the user dismissed this dialog so leave the preference unchanged.
    111     }
    112 }
    113