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.launcher3;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.widget.Checkable;
22 import android.widget.FrameLayout;
23 
24 public class CheckableFrameLayout extends FrameLayout implements Checkable {
25     private static final int[] CHECKED_STATE_SET = { android.R.attr.state_checked };
26     boolean mChecked;
27 
CheckableFrameLayout(Context context)28     public CheckableFrameLayout(Context context) {
29         super(context);
30     }
31 
CheckableFrameLayout(Context context, AttributeSet attrs)32     public CheckableFrameLayout(Context context, AttributeSet attrs) {
33         super(context, attrs);
34     }
35 
CheckableFrameLayout(Context context, AttributeSet attrs, int defStyle)36     public CheckableFrameLayout(Context context, AttributeSet attrs, int defStyle) {
37         super(context, attrs, defStyle);
38     }
39 
isChecked()40     public boolean isChecked() {
41         return mChecked;
42     }
43 
setChecked(boolean checked)44     public void setChecked(boolean checked) {
45         if (checked != mChecked) {
46             mChecked = checked;
47             refreshDrawableState();
48         }
49     }
50 
toggle()51     public void toggle() {
52         setChecked(!mChecked);
53     }
54 
55     @Override
onCreateDrawableState(int extraSpace)56     protected int[] onCreateDrawableState(int extraSpace) {
57         final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
58         if (isChecked()) {
59             mergeDrawableStates(drawableState, CHECKED_STATE_SET);
60         }
61         return drawableState;
62     }
63 }
64