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
17package com.android.launcher3;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.widget.Checkable;
22import android.widget.FrameLayout;
23
24public class CheckableFrameLayout extends FrameLayout implements Checkable {
25    private static final int[] CHECKED_STATE_SET = { android.R.attr.state_checked };
26    boolean mChecked;
27
28    public CheckableFrameLayout(Context context) {
29        super(context);
30    }
31
32    public CheckableFrameLayout(Context context, AttributeSet attrs) {
33        super(context, attrs);
34    }
35
36    public CheckableFrameLayout(Context context, AttributeSet attrs, int defStyle) {
37        super(context, attrs, defStyle);
38    }
39
40    public boolean isChecked() {
41        return mChecked;
42    }
43
44    public void setChecked(boolean checked) {
45        if (checked != mChecked) {
46            mChecked = checked;
47            refreshDrawableState();
48        }
49    }
50
51    public void toggle() {
52        setChecked(!mChecked);
53    }
54
55    @Override
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