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 com.android.support.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.support.v4.content.ContextCompat;
25import android.util.AttributeSet;
26import android.view.View;
27import android.widget.ImageButton;
28
29import com.android.media.update.ApiHelper;
30import com.android.media.update.R;
31
32/**
33 * Chevron/Caret button to expand/collapse group volume list with animation.
34 */
35public class MediaRouteExpandCollapseButton extends ImageButton {
36    final AnimationDrawable mExpandAnimationDrawable;
37    final AnimationDrawable mCollapseAnimationDrawable;
38    final String mExpandGroupDescription;
39    final String mCollapseGroupDescription;
40    boolean mIsGroupExpanded;
41    OnClickListener mListener;
42
43    public MediaRouteExpandCollapseButton(Context context) {
44        this(context, null);
45    }
46
47    public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs) {
48        this(context, attrs, 0);
49    }
50
51    public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs, int defStyleAttr) {
52        super(context, attrs, defStyleAttr);
53        mExpandAnimationDrawable = (AnimationDrawable)
54                ApiHelper.getLibResources(context).getDrawable(R.drawable.mr_group_expand);
55        mCollapseAnimationDrawable = (AnimationDrawable)
56                ApiHelper.getLibResources(context).getDrawable(R.drawable.mr_group_collapse);
57
58        ColorFilter filter = new PorterDuffColorFilter(
59                MediaRouterThemeHelper.getControllerColor(context, defStyleAttr),
60                PorterDuff.Mode.SRC_IN);
61        mExpandAnimationDrawable.setColorFilter(filter);
62        mCollapseAnimationDrawable.setColorFilter(filter);
63
64        mExpandGroupDescription =
65                ApiHelper.getLibResources(context).getString(R.string.mr_controller_expand_group);
66        mCollapseGroupDescription =
67                ApiHelper.getLibResources(context).getString(R.string.mr_controller_collapse_group);
68
69        setImageDrawable(mExpandAnimationDrawable.getFrame(0));
70        setContentDescription(mExpandGroupDescription);
71
72        super.setOnClickListener(new OnClickListener() {
73            @Override
74            public void onClick(View view) {
75                mIsGroupExpanded = !mIsGroupExpanded;
76                if (mIsGroupExpanded) {
77                    setImageDrawable(mExpandAnimationDrawable);
78                    mExpandAnimationDrawable.start();
79                    setContentDescription(mCollapseGroupDescription);
80                } else {
81                    setImageDrawable(mCollapseAnimationDrawable);
82                    mCollapseAnimationDrawable.start();
83                    setContentDescription(mExpandGroupDescription);
84                }
85                if (mListener != null) {
86                    mListener.onClick(view);
87                }
88            }
89        });
90    }
91
92    @Override
93    public void setOnClickListener(OnClickListener listener) {
94        mListener = listener;
95    }
96}
97