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/*
* Copyright (C) 2021 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.hardware.input;
import static android.os.BatteryManager.BATTERY_STATUS_UNKNOWN;
import static android.os.IInputConstants.INVALID_BATTERY_CAPACITY;
import android.hardware.BatteryState;
/**
* Battery implementation for input devices.
*
* @hide
*/
public final class InputDeviceBatteryState extends BatteryState {
private static final float NULL_BATTERY_CAPACITY = Float.NaN;
private final InputManager mInputManager;
private final int mDeviceId;
private final boolean mHasBattery;
InputDeviceBatteryState(InputManager inputManager, int deviceId, boolean hasBattery) {
mInputManager = inputManager;
mDeviceId = deviceId;
mHasBattery = hasBattery;
}
@Override
public boolean isPresent() {
return mHasBattery;
}
@Override
public int getStatus() {
if (!mHasBattery) {
return BATTERY_STATUS_UNKNOWN;
}
return mInputManager.getBatteryStatus(mDeviceId);
}
@Override
public float getCapacity() {
if (mHasBattery) {
int capacity = mInputManager.getBatteryCapacity(mDeviceId);
if (capacity != INVALID_BATTERY_CAPACITY) {
return (float) capacity / 100.0f;
}
}
return NULL_BATTERY_CAPACITY;
}
}
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