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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package com.android.systemui.statusbar.phone;
     16 
     17 import android.content.Context;
     18 import android.graphics.drawable.AnimatedVectorDrawable;
     19 import android.util.AttributeSet;
     20 import android.widget.ImageView;
     21 import com.android.systemui.R;
     22 
     23 public class ExpandableIndicator extends ImageView {
     24 
     25     private boolean mExpanded;
     26     private boolean mIsDefaultDirection = true;
     27 
     28     public ExpandableIndicator(Context context, AttributeSet attrs) {
     29         super(context, attrs);
     30     }
     31 
     32     @Override
     33     protected void onFinishInflate() {
     34         super.onFinishInflate();
     35         updateIndicatorDrawable();
     36         setContentDescription(getContentDescription(mExpanded));
     37     }
     38 
     39     public void setExpanded(boolean expanded) {
     40         if (expanded == mExpanded) return;
     41         mExpanded = expanded;
     42         final int res = getDrawableResourceId(!mExpanded);
     43         // workaround to reset drawable
     44         final AnimatedVectorDrawable avd = (AnimatedVectorDrawable) getContext()
     45                 .getDrawable(res).getConstantState().newDrawable();
     46         setImageDrawable(avd);
     47         avd.forceAnimationOnUI();
     48         avd.start();
     49         setContentDescription(getContentDescription(expanded));
     50     }
     51 
     52     /** Whether the icons are using the default direction or the opposite */
     53     public void setDefaultDirection(boolean isDefaultDirection) {
     54         mIsDefaultDirection = isDefaultDirection;
     55         updateIndicatorDrawable();
     56     }
     57 
     58     private int getDrawableResourceId(boolean expanded) {
     59         if (mIsDefaultDirection) {
     60             return expanded ? R.drawable.ic_volume_collapse_animation
     61                     : R.drawable.ic_volume_expand_animation;
     62         } else {
     63             return expanded ? R.drawable.ic_volume_expand_animation
     64                     : R.drawable.ic_volume_collapse_animation;
     65         }
     66     }
     67 
     68     private String getContentDescription(boolean expanded) {
     69         return expanded ? mContext.getString(R.string.accessibility_quick_settings_collapse)
     70                 : mContext.getString(R.string.accessibility_quick_settings_expand);
     71     }
     72 
     73     private void updateIndicatorDrawable() {
     74         final int res = getDrawableResourceId(mExpanded);
     75         setImageResource(res);
     76     }
     77 }
     78