1 /* 2 * Copyright (C) 2015 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 17 package android.support.v7.app; 18 19 import android.content.Context; 20 import android.graphics.ColorFilter; 21 import android.graphics.PorterDuff; 22 import android.graphics.PorterDuffColorFilter; 23 import android.graphics.drawable.AnimationDrawable; 24 import android.support.v4.content.ContextCompat; 25 import android.support.v7.mediarouter.R; 26 import android.util.AttributeSet; 27 import android.view.View; 28 import android.widget.ImageButton; 29 30 /** 31 * Chevron/Caret button to expand/collapse group volume list with animation. 32 */ 33 class MediaRouteExpandCollapseButton extends ImageButton { 34 private final AnimationDrawable mExpandAnimationDrawable; 35 private final AnimationDrawable mCollapseAnimationDrawable; 36 private final String mExpandGroupDescription; 37 private final String mCollapseGroupDescription; 38 private boolean mIsGroupExpanded; 39 private OnClickListener mListener; 40 MediaRouteExpandCollapseButton(Context context)41 public MediaRouteExpandCollapseButton(Context context) { 42 this(context, null); 43 } 44 MediaRouteExpandCollapseButton(Context context, AttributeSet attrs)45 public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs) { 46 this(context, attrs, 0); 47 } 48 MediaRouteExpandCollapseButton(Context context, AttributeSet attrs, int defStyleAttr)49 public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs, int defStyleAttr) { 50 super(context, attrs, defStyleAttr); 51 mExpandAnimationDrawable = (AnimationDrawable) ContextCompat.getDrawable( 52 context, R.drawable.mr_group_expand); 53 mCollapseAnimationDrawable = (AnimationDrawable) ContextCompat.getDrawable( 54 context, R.drawable.mr_group_collapse); 55 56 ColorFilter filter = new PorterDuffColorFilter( 57 MediaRouterThemeHelper.getControllerColor(context, defStyleAttr), 58 PorterDuff.Mode.SRC_IN); 59 mExpandAnimationDrawable.setColorFilter(filter); 60 mCollapseAnimationDrawable.setColorFilter(filter); 61 62 mExpandGroupDescription = context.getString(R.string.mr_controller_expand_group); 63 mCollapseGroupDescription = context.getString(R.string.mr_controller_collapse_group); 64 65 setImageDrawable(mExpandAnimationDrawable.getFrame(0)); 66 setContentDescription(mExpandGroupDescription); 67 68 super.setOnClickListener(new OnClickListener() { 69 @Override 70 public void onClick(View view) { 71 mIsGroupExpanded = !mIsGroupExpanded; 72 if (mIsGroupExpanded) { 73 setImageDrawable(mExpandAnimationDrawable); 74 mExpandAnimationDrawable.start(); 75 setContentDescription(mCollapseGroupDescription); 76 } else { 77 setImageDrawable(mCollapseAnimationDrawable); 78 mCollapseAnimationDrawable.start(); 79 setContentDescription(mExpandGroupDescription); 80 } 81 if (mListener != null) { 82 mListener.onClick(view); 83 } 84 } 85 }); 86 } 87 88 @Override setOnClickListener(OnClickListener listener)89 public void setOnClickListener(OnClickListener listener) { 90 mListener = listener; 91 } 92 } 93