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