The Android Open Source Project | 792a220 | 2009-03-03 19:32:30 -0800 | [diff] [blame] | 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 | |
Jack He | f02d3c6 | 2017-02-21 00:39:22 -0500 | [diff] [blame] | 17 | package com.android.music.utils; |
The Android Open Source Project | 792a220 | 2009-03-03 19:32:30 -0800 | [diff] [blame] | 18 | |
| 19 | import android.content.Context; |
| 20 | import android.util.AttributeSet; |
| 21 | import android.widget.Checkable; |
| 22 | import android.widget.RelativeLayout; |
| 23 | |
| 24 | /** |
| 25 | * A special variation of RelativeLayout that can be used as a checkable object. |
| 26 | * This allows it to be used as the top-level view of a list view item, which |
| 27 | * also supports checking. Otherwise, it works identically to a RelativeLayout. |
| 28 | */ |
| 29 | public class CheckableRelativeLayout extends RelativeLayout implements Checkable { |
| 30 | private boolean mChecked; |
| 31 | |
Jack He | b0fba8b | 2017-01-26 15:54:38 -0800 | [diff] [blame] | 32 | private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked}; |
The Android Open Source Project | 792a220 | 2009-03-03 19:32:30 -0800 | [diff] [blame] | 33 | |
| 34 | public CheckableRelativeLayout(Context context, AttributeSet attrs) { |
| 35 | super(context, attrs); |
| 36 | } |
| 37 | |
| 38 | @Override |
| 39 | protected int[] onCreateDrawableState(int extraSpace) { |
| 40 | final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); |
| 41 | if (isChecked()) { |
| 42 | mergeDrawableStates(drawableState, CHECKED_STATE_SET); |
| 43 | } |
| 44 | return drawableState; |
| 45 | } |
| 46 | |
| 47 | public void toggle() { |
| 48 | setChecked(!mChecked); |
| 49 | } |
Jack He | b0fba8b | 2017-01-26 15:54:38 -0800 | [diff] [blame] | 50 | |
The Android Open Source Project | 792a220 | 2009-03-03 19:32:30 -0800 | [diff] [blame] | 51 | public boolean isChecked() { |
| 52 | return mChecked; |
| 53 | } |
| 54 | |
| 55 | public void setChecked(boolean checked) { |
| 56 | if (mChecked != checked) { |
| 57 | mChecked = checked; |
| 58 | refreshDrawableState(); |
| 59 | } |
| 60 | } |
| 61 | } |