1 /* 2 * Copyright (C) 2017 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 com.android.systemui; 18 19 import android.annotation.Nullable; 20 import android.content.Context; 21 import android.content.res.TypedArray; 22 import android.util.AttributeSet; 23 import android.widget.ImageView; 24 25 import com.android.systemui.statusbar.policy.BatteryController; 26 import com.android.systemui.statusbar.policy.ConfigurationController; 27 28 /** 29 * A view that only shows its drawable while the phone is charging. 30 * 31 * Also reloads its drawable upon density changes. 32 */ 33 public class ChargingView extends ImageView implements 34 BatteryController.BatteryStateChangeCallback, 35 ConfigurationController.ConfigurationListener { 36 37 private BatteryController mBatteryController; 38 private int mImageResource; 39 private boolean mCharging; 40 private boolean mDark; 41 ChargingView(Context context, @Nullable AttributeSet attrs)42 public ChargingView(Context context, @Nullable AttributeSet attrs) { 43 super(context, attrs); 44 45 TypedArray a = context.obtainStyledAttributes(attrs, new int[]{android.R.attr.src}); 46 int srcResId = a.getResourceId(0, 0); 47 48 if (srcResId != 0) { 49 mImageResource = srcResId; 50 } 51 52 a.recycle(); 53 54 updateVisibility(); 55 } 56 57 @Override onAttachedToWindow()58 public void onAttachedToWindow() { 59 super.onAttachedToWindow(); 60 mBatteryController = Dependency.get(BatteryController.class); 61 mBatteryController.addCallback(this); 62 Dependency.get(ConfigurationController.class).addCallback(this); 63 } 64 65 @Override onDetachedFromWindow()66 public void onDetachedFromWindow() { 67 super.onDetachedFromWindow(); 68 mBatteryController.removeCallback(this); 69 Dependency.get(ConfigurationController.class).removeCallback(this); 70 } 71 72 @Override onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging)73 public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) { 74 mCharging = charging; 75 updateVisibility(); 76 } 77 78 @Override onDensityOrFontScaleChanged()79 public void onDensityOrFontScaleChanged() { 80 setImageResource(mImageResource); 81 } 82 setDark(boolean dark)83 public void setDark(boolean dark) { 84 mDark = dark; 85 updateVisibility(); 86 } 87 updateVisibility()88 private void updateVisibility() { 89 setVisibility(mCharging && mDark ? VISIBLE : INVISIBLE); 90 } 91 } 92