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/*
* Copyright (C) 2017 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 com.android.systemui;
import android.annotation.Nullable;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.UserHandle;
import android.util.AttributeSet;
import android.widget.ImageView;
import com.android.internal.hardware.AmbientDisplayConfiguration;
import com.android.systemui.statusbar.policy.BatteryController;
import com.android.systemui.statusbar.policy.ConfigurationController;
/**
* A view that only shows its drawable while the phone is charging.
*
* Also reloads its drawable upon density changes.
*/
public class ChargingView extends ImageView implements
BatteryController.BatteryStateChangeCallback,
ConfigurationController.ConfigurationListener {
private static final long CHARGING_INDICATION_DELAY_MS = 1000;
private final AmbientDisplayConfiguration mConfig;
private final Runnable mClearSuppressCharging = this::clearSuppressCharging;
private BatteryController mBatteryController;
private int mImageResource;
private boolean mCharging;
private boolean mDark;
private boolean mSuppressCharging;
private void clearSuppressCharging() {
mSuppressCharging = false;
removeCallbacks(mClearSuppressCharging);
updateVisibility();
}
public ChargingView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
mConfig = new AmbientDisplayConfiguration(context);
TypedArray a = context.obtainStyledAttributes(attrs, new int[]{android.R.attr.src});
int srcResId = a.getResourceId(0, 0);
if (srcResId != 0) {
mImageResource = srcResId;
}
a.recycle();
updateVisibility();
}
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
mBatteryController = Dependency.get(BatteryController.class);
mBatteryController.addCallback(this);
Dependency.get(ConfigurationController.class).addCallback(this);
}
@Override
public void onDetachedFromWindow() {
super.onDetachedFromWindow();
mBatteryController.removeCallback(this);
Dependency.get(ConfigurationController.class).removeCallback(this);
removeCallbacks(mClearSuppressCharging);
}
@Override
public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {
boolean startCharging = charging && !mCharging;
if (startCharging && deviceWillWakeUpWhenPluggedIn() && mDark) {
// We're about to wake up, and thus don't want to show the indicator just for it to be
// hidden again.
clearSuppressCharging();
mSuppressCharging = true;
postDelayed(mClearSuppressCharging, CHARGING_INDICATION_DELAY_MS);
}
mCharging = charging;
updateVisibility();
}
private boolean deviceWillWakeUpWhenPluggedIn() {
boolean plugTurnsOnScreen = getResources().getBoolean(
com.android.internal.R.bool.config_unplugTurnsOnScreen);
boolean aod = mConfig.alwaysOnEnabled(UserHandle.USER_CURRENT);
return !aod && plugTurnsOnScreen;
}
@Override
public void onDensityOrFontScaleChanged() {
setImageResource(mImageResource);
}
public void setDark(boolean dark) {
mDark = dark;
if (!dark) {
clearSuppressCharging();
}
updateVisibility();
}
private void updateVisibility() {
setVisibility(mCharging && !mSuppressCharging && mDark ? VISIBLE : INVISIBLE);
}
}
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