1 /*
2  * Copyright (C) 2019 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 package com.android.car.ui.uxr;
17 
18 import android.annotation.SuppressLint;
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.widget.ImageView;
22 
23 import androidx.annotation.Nullable;
24 
25 /**
26  * A {@link ImageView} that implements {@link DrawableStateView}, for allowing additional states
27  * such as ux restriction.
28  */
29 @SuppressLint("AppCompatCustomView")
30 public class DrawableStateImageView extends ImageView implements DrawableStateView {
31     private DrawableStateUtil mUtil;
32 
DrawableStateImageView(Context context)33     public DrawableStateImageView(Context context) {
34         super(context);
35     }
36 
DrawableStateImageView(Context context, @Nullable AttributeSet attrs)37     public DrawableStateImageView(Context context, @Nullable AttributeSet attrs) {
38         super(context, attrs);
39     }
40 
DrawableStateImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr)41     public DrawableStateImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
42         super(context, attrs, defStyleAttr);
43     }
44 
45     @Override
setExtraDrawableState(@ullable int[] stateToAdd, @Nullable int[] stateToRemove)46     public void setExtraDrawableState(@Nullable int[] stateToAdd, @Nullable int[] stateToRemove) {
47         if (mUtil == null) {
48             mUtil = new DrawableStateUtil(this);
49         }
50         mUtil.setExtraDrawableState(stateToAdd, stateToRemove);
51     }
52 
53     @Override
onCreateDrawableState(int extraSpace)54     public int[] onCreateDrawableState(int extraSpace) {
55         if (mUtil == null) {
56             mUtil = new DrawableStateUtil(this);
57         }
58         return mUtil.onCreateDrawableState(extraSpace, space -> super.onCreateDrawableState(space));
59     }
60 }
61