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      1 /*
      2  * Copyright (C) 2013 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.settings.widget;
     18 
     19 import android.content.Context;
     20 import android.util.AttributeSet;
     21 import android.widget.Switch;
     22 
     23 public class ToggleSwitch extends Switch {
     24 
     25     private ToggleSwitch.OnBeforeCheckedChangeListener mOnBeforeListener;
     26 
     27     public interface OnBeforeCheckedChangeListener {
     28         boolean onBeforeCheckedChanged(ToggleSwitch toggleSwitch, boolean checked);
     29     }
     30 
     31     public ToggleSwitch(Context context) {
     32         super(context);
     33     }
     34 
     35     public ToggleSwitch(Context context, AttributeSet attrs) {
     36         super(context, attrs);
     37     }
     38 
     39     public ToggleSwitch(Context context, AttributeSet attrs, int defStyleAttr) {
     40         super(context, attrs, defStyleAttr);
     41     }
     42 
     43     public ToggleSwitch(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
     44         super(context, attrs, defStyleAttr, defStyleRes);
     45     }
     46 
     47     public void setOnBeforeCheckedChangeListener(OnBeforeCheckedChangeListener listener) {
     48         mOnBeforeListener = listener;
     49     }
     50 
     51     @Override
     52     public void setChecked(boolean checked) {
     53         if (mOnBeforeListener != null
     54                 && mOnBeforeListener.onBeforeCheckedChanged(this, checked)) {
     55             return;
     56         }
     57         super.setChecked(checked);
     58     }
     59 
     60     public void setCheckedInternal(boolean checked) {
     61         super.setChecked(checked);
     62     }
     63 }
     64