1/*
2 * Copyright 2018 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 androidx.mediarouter.app;
18
19import android.content.Context;
20import android.graphics.ColorFilter;
21import android.graphics.PorterDuff;
22import android.graphics.PorterDuffColorFilter;
23import android.graphics.drawable.AnimationDrawable;
24import android.util.AttributeSet;
25import android.view.View;
26import android.widget.ImageButton;
27
28import androidx.core.content.ContextCompat;
29import androidx.mediarouter.R;
30
31/**
32 * Chevron/Caret button to expand/collapse group volume list with animation.
33 */
34class MediaRouteExpandCollapseButton extends ImageButton {
35    final AnimationDrawable mExpandAnimationDrawable;
36    final AnimationDrawable mCollapseAnimationDrawable;
37    final String mExpandGroupDescription;
38    final String mCollapseGroupDescription;
39    boolean mIsGroupExpanded;
40    OnClickListener mListener;
41
42    public MediaRouteExpandCollapseButton(Context context) {
43        this(context, null);
44    }
45
46    public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs) {
47        this(context, attrs, 0);
48    }
49
50    public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs, int defStyleAttr) {
51        super(context, attrs, defStyleAttr);
52        mExpandAnimationDrawable = (AnimationDrawable) ContextCompat.getDrawable(
53                context, R.drawable.mr_group_expand);
54        mCollapseAnimationDrawable = (AnimationDrawable) ContextCompat.getDrawable(
55                context, R.drawable.mr_group_collapse);
56
57        ColorFilter filter = new PorterDuffColorFilter(
58                MediaRouterThemeHelper.getControllerColor(context, defStyleAttr),
59                PorterDuff.Mode.SRC_IN);
60        mExpandAnimationDrawable.setColorFilter(filter);
61        mCollapseAnimationDrawable.setColorFilter(filter);
62
63        mExpandGroupDescription = context.getString(R.string.mr_controller_expand_group);
64        mCollapseGroupDescription = context.getString(R.string.mr_controller_collapse_group);
65
66        setImageDrawable(mExpandAnimationDrawable.getFrame(0));
67        setContentDescription(mExpandGroupDescription);
68
69        super.setOnClickListener(new OnClickListener() {
70            @Override
71            public void onClick(View view) {
72                mIsGroupExpanded = !mIsGroupExpanded;
73                if (mIsGroupExpanded) {
74                    setImageDrawable(mExpandAnimationDrawable);
75                    mExpandAnimationDrawable.start();
76                    setContentDescription(mCollapseGroupDescription);
77                } else {
78                    setImageDrawable(mCollapseAnimationDrawable);
79                    mCollapseAnimationDrawable.start();
80                    setContentDescription(mExpandGroupDescription);
81                }
82                if (mListener != null) {
83                    mListener.onClick(view);
84                }
85            }
86        });
87    }
88
89    @Override
90    public void setOnClickListener(OnClickListener listener) {
91        mListener = listener;
92    }
93}
94