1/*
2 * Copyright (C) 2010 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
17package com.android.systemui.statusbar.policy;
18
19import com.android.systemui.DemoMode;
20
21import java.io.FileDescriptor;
22import java.io.PrintWriter;
23
24public interface BatteryController extends DemoMode {
25    /**
26     * Prints the current state of the {@link BatteryController} to the given {@link PrintWriter}.
27     */
28    void dump(FileDescriptor fd, PrintWriter pw, String[] args);
29
30    /**
31     * Sets if the current device is in power save mode.
32     */
33    void setPowerSaveMode(boolean powerSave);
34
35    /**
36     * Returns {@code true} if the device is currently in power save mode.
37     */
38    boolean isPowerSave();
39
40    void addStateChangedCallback(BatteryStateChangeCallback cb);
41    void removeStateChangedCallback(BatteryStateChangeCallback cb);
42
43    /**
44     * A listener that will be notified whenever a change in battery level or power save mode
45     * has occurred.
46     */
47    interface BatteryStateChangeCallback {
48        void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging);
49        void onPowerSaveChanged(boolean isPowerSave);
50    }
51}
52