1/*
2 * Copyright (C) 2008 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.contacts.ui.widget;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.widget.Checkable;
22import android.widget.ImageView;
23
24/**
25 * A special variation of ImageView that can be used as a checkable object.
26 * This is used as the background view of quickcontact chiclet, which is in checked state
27 * when disambig list is shown. Otherwise, it works identically to a ImageView.
28 */
29public class CheckableImageView extends ImageView implements Checkable {
30    private boolean mChecked;
31
32    private static final int[] CHECKED_STATE_SET = {
33        android.R.attr.state_checked
34    };
35
36    public CheckableImageView(Context context, AttributeSet attrs) {
37        super(context, attrs);
38    }
39
40    @Override
41    public int[] onCreateDrawableState(int extraSpace) {
42        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
43        if (isChecked()) {
44            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
45        }
46        return drawableState;
47    }
48
49    public void toggle() {
50        setChecked(!mChecked);
51    }
52
53    public boolean isChecked() {
54        return mChecked;
55    }
56
57    public void setChecked(boolean checked) {
58        if (mChecked != checked) {
59            mChecked = checked;
60            refreshDrawableState();
61        }
62    }
63}
64