| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.support.v7.app; |
| |
| import android.content.Context; |
| import android.graphics.ColorFilter; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuffColorFilter; |
| import android.graphics.drawable.AnimationDrawable; |
| import android.support.v4.content.ContextCompat; |
| import android.support.v7.mediarouter.R; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.widget.ImageButton; |
| |
| /** |
| * Chevron/Caret button to expand/collapse group volume list with animation. |
| */ |
| class MediaRouteExpandCollapseButton extends ImageButton { |
| private final AnimationDrawable mExpandAnimationDrawable; |
| private final AnimationDrawable mCollapseAnimationDrawable; |
| private final String mExpandGroupDescription; |
| private final String mCollapseGroupDescription; |
| private boolean mIsGroupExpanded; |
| private OnClickListener mListener; |
| |
| public MediaRouteExpandCollapseButton(Context context) { |
| this(context, null); |
| } |
| |
| public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public MediaRouteExpandCollapseButton(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| mExpandAnimationDrawable = (AnimationDrawable) ContextCompat.getDrawable( |
| context, R.drawable.ic_expand); |
| mCollapseAnimationDrawable = (AnimationDrawable) ContextCompat.getDrawable( |
| context, R.drawable.ic_collapse); |
| |
| ColorFilter filter = new PorterDuffColorFilter( |
| MediaRouterThemeHelper.getControllerColor(context, defStyleAttr), |
| PorterDuff.Mode.SRC_IN); |
| mExpandAnimationDrawable.setColorFilter(filter); |
| mCollapseAnimationDrawable.setColorFilter(filter); |
| |
| mExpandGroupDescription = context.getString(R.string.mr_controller_expand_group); |
| mCollapseGroupDescription = context.getString(R.string.mr_controller_collapse_group); |
| |
| setImageDrawable(mExpandAnimationDrawable.getFrame(0)); |
| setContentDescription(mExpandGroupDescription); |
| |
| super.setOnClickListener(new OnClickListener() { |
| @Override |
| public void onClick(View view) { |
| mIsGroupExpanded = !mIsGroupExpanded; |
| if (mIsGroupExpanded) { |
| setImageDrawable(mExpandAnimationDrawable); |
| mExpandAnimationDrawable.start(); |
| setContentDescription(mCollapseGroupDescription); |
| } else { |
| setImageDrawable(mCollapseAnimationDrawable); |
| mCollapseAnimationDrawable.start(); |
| setContentDescription(mExpandGroupDescription); |
| } |
| if (mListener != null) { |
| mListener.onClick(view); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void setOnClickListener(OnClickListener listener) { |
| mListener = listener; |
| } |
| } |