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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.camera.ui;
     18 
     19 import com.android.camera.ListPreference;
     20 import com.android.camera.R;
     21 
     22 import android.content.Context;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 import android.view.accessibility.AccessibilityEvent;
     26 import android.widget.Button;
     27 import android.widget.CompoundButton;
     28 import android.widget.CompoundButton.OnCheckedChangeListener;
     29 import android.widget.Switch;
     30 
     31 /* A switch setting control which turns on/off the setting. */
     32 public class InLineSettingSwitch extends InLineSettingItem {
     33     private Switch mSwitch;
     34 
     35     OnCheckedChangeListener mCheckedChangeListener = new OnCheckedChangeListener() {
     36         public void onCheckedChanged(CompoundButton buttonView, boolean desiredState) {
     37             changeIndex(desiredState ? 1 : 0);
     38         }
     39     };
     40 
     41     public InLineSettingSwitch(Context context, AttributeSet attrs) {
     42         super(context, attrs);
     43     }
     44 
     45     @Override
     46     protected void onFinishInflate() {
     47         super.onFinishInflate();
     48         mSwitch = (Switch) findViewById(R.id.setting_switch);
     49         mSwitch.setOnCheckedChangeListener(mCheckedChangeListener);
     50     }
     51 
     52     @Override
     53     public void initialize(ListPreference preference) {
     54         super.initialize(preference);
     55         // Add content descriptions for the increment and decrement buttons.
     56         mSwitch.setContentDescription(getContext().getResources().getString(
     57                 R.string.accessibility_switch, mPreference.getTitle()));
     58     }
     59 
     60     @Override
     61     protected void updateView() {
     62         mSwitch.setOnCheckedChangeListener(null);
     63         if (mOverrideValue == null) {
     64             mSwitch.setChecked(mIndex == 1);
     65         } else {
     66             int index = mPreference.findIndexOfValue(mOverrideValue);
     67             mSwitch.setChecked(index == 1);
     68         }
     69         mSwitch.setOnCheckedChangeListener(mCheckedChangeListener);
     70     }
     71 
     72     @Override
     73     public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
     74         onPopulateAccessibilityEvent(event);
     75         return true;
     76     }
     77 
     78     @Override
     79     public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
     80         super.onPopulateAccessibilityEvent(event);
     81         event.getText().add(mPreference.getTitle());
     82     }
     83 }
     84