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      1 /*
      2  * Copyright (C) 2010 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.common.preference;
     18 
     19 import android.app.AlertDialog.Builder;
     20 import android.content.Context;
     21 import android.preference.ListPreference;
     22 import android.util.AttributeSet;
     23 
     24 import com.android.contacts.common.R;
     25 import com.android.contacts.common.preference.ContactsPreferences;
     26 
     27 /**
     28  * Custom preference: sort-by.
     29  */
     30 public final class SortOrderPreference extends ListPreference {
     31 
     32     private ContactsPreferences mPreferences;
     33     private Context mContext;
     34 
     35     public SortOrderPreference(Context context) {
     36         super(context);
     37         prepare();
     38     }
     39 
     40     public SortOrderPreference(Context context, AttributeSet attrs) {
     41         super(context, attrs);
     42         prepare();
     43     }
     44 
     45     private void prepare() {
     46         mContext = getContext();
     47         mPreferences = new ContactsPreferences(mContext);
     48         setEntries(new String[]{
     49                 mContext.getString(R.string.display_options_sort_by_given_name),
     50                 mContext.getString(R.string.display_options_sort_by_family_name),
     51         });
     52         setEntryValues(new String[]{
     53                 String.valueOf(ContactsPreferences.SORT_ORDER_PRIMARY),
     54                 String.valueOf(ContactsPreferences.SORT_ORDER_ALTERNATIVE),
     55         });
     56         setValue(String.valueOf(mPreferences.getSortOrder()));
     57     }
     58 
     59     @Override
     60     protected boolean shouldPersist() {
     61         return false;   // This preference takes care of its own storage
     62     }
     63 
     64     @Override
     65     public CharSequence getSummary() {
     66         switch (mPreferences.getSortOrder()) {
     67             case ContactsPreferences.SORT_ORDER_PRIMARY:
     68                 return mContext.getString(R.string.display_options_sort_by_given_name);
     69             case ContactsPreferences.SORT_ORDER_ALTERNATIVE:
     70                 return mContext.getString(R.string.display_options_sort_by_family_name);
     71         }
     72         return null;
     73     }
     74 
     75     @Override
     76     protected boolean persistString(String value) {
     77         int newValue = Integer.parseInt(value);
     78         if (newValue != mPreferences.getSortOrder()) {
     79             mPreferences.setSortOrder(newValue);
     80             notifyChanged();
     81         }
     82         return true;
     83     }
     84 
     85     @Override
     86     // UX recommendation is not to show cancel button on such lists.
     87     protected void onPrepareDialogBuilder(Builder builder) {
     88         super.onPrepareDialogBuilder(builder);
     89         builder.setNegativeButton(null, null);
     90     }
     91 }
     92