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
15package com.android.systemui.tuner;
16
17import android.content.Context;
18import android.provider.Settings;
19import android.support.v7.preference.DropDownPreference;
20import android.text.TextUtils;
21import android.util.ArraySet;
22import android.util.AttributeSet;
23import com.android.internal.logging.MetricsLogger;
24import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
25import com.android.systemui.Dependency;
26import com.android.systemui.statusbar.phone.StatusBarIconController;
27
28import static android.provider.Settings.System.SHOW_BATTERY_PERCENT;
29
30public class BatteryPreference extends DropDownPreference implements TunerService.Tunable {
31
32    private static final String PERCENT = "percent";
33    private static final String DEFAULT = "default";
34    private static final String DISABLED = "disabled";
35
36    private final String mBattery;
37    private boolean mBatteryEnabled;
38    private boolean mHasPercentage;
39    private ArraySet<String> mBlacklist;
40    private boolean mHasSetValue;
41
42    public BatteryPreference(Context context, AttributeSet attrs) {
43        super(context, attrs);
44        mBattery = context.getString(com.android.internal.R.string.status_bar_battery);
45        setEntryValues(new CharSequence[] {PERCENT, DEFAULT, DISABLED });
46    }
47
48    @Override
49    public void onAttached() {
50        super.onAttached();
51        mHasPercentage = Settings.System.getInt(getContext().getContentResolver(),
52                SHOW_BATTERY_PERCENT, 0) != 0;
53        Dependency.get(TunerService.class).addTunable(this, StatusBarIconController.ICON_BLACKLIST);
54    }
55
56    @Override
57    public void onDetached() {
58        Dependency.get(TunerService.class).removeTunable(this);
59        super.onDetached();
60    }
61
62    @Override
63    public void onTuningChanged(String key, String newValue) {
64        if (StatusBarIconController.ICON_BLACKLIST.equals(key)) {
65            mBlacklist = StatusBarIconController.getIconBlacklist(newValue);
66            mBatteryEnabled = !mBlacklist.contains(mBattery);
67        }
68        if (!mHasSetValue) {
69            // Because of the complicated tri-state it can end up looping and setting state back to
70            // what the user didn't choose.  To avoid this, just set the state once and rely on the
71            // preference to handle updates.
72            mHasSetValue = true;
73            if (mBatteryEnabled && mHasPercentage) {
74                setValue(PERCENT);
75            } else if (mBatteryEnabled) {
76                setValue(DEFAULT);
77            } else {
78                setValue(DISABLED);
79            }
80        }
81    }
82
83    @Override
84    protected boolean persistString(String value) {
85        final boolean v = PERCENT.equals(value);
86        MetricsLogger.action(getContext(), MetricsEvent.TUNER_BATTERY_PERCENTAGE, v);
87        Settings.System.putInt(getContext().getContentResolver(), SHOW_BATTERY_PERCENT, v ? 1 : 0);
88        if (DISABLED.equals(value)) {
89            mBlacklist.add(mBattery);
90        } else {
91            mBlacklist.remove(mBattery);
92        }
93        Dependency.get(TunerService.class).setValue(StatusBarIconController.ICON_BLACKLIST,
94                TextUtils.join(",", mBlacklist));
95        return true;
96    }
97}
98