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