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 */
14package com.android.systemui.tuner;
15
16import android.content.Context;
17import android.support.v7.preference.DropDownPreference;
18import android.text.TextUtils;
19import android.util.ArraySet;
20import android.util.AttributeSet;
21
22import com.android.systemui.Dependency;
23import com.android.systemui.statusbar.phone.StatusBarIconController;
24import com.android.systemui.statusbar.policy.Clock;
25
26public class ClockPreference extends DropDownPreference implements TunerService.Tunable {
27
28    private static final String SECONDS = "seconds";
29    private static final String DEFAULT = "default";
30    private static final String DISABLED = "disabled";
31
32    private final String mClock;
33    private boolean mClockEnabled;
34    private boolean mHasSeconds;
35    private ArraySet<String> mBlacklist;
36    private boolean mHasSetValue;
37    private boolean mReceivedSeconds;
38    private boolean mReceivedClock;
39
40    public ClockPreference(Context context, AttributeSet attrs) {
41        super(context, attrs);
42        mClock = context.getString(com.android.internal.R.string.status_bar_clock);
43        setEntryValues(new CharSequence[] { SECONDS, DEFAULT, DISABLED });
44    }
45
46    @Override
47    public void onAttached() {
48        super.onAttached();
49        Dependency.get(TunerService.class).addTunable(this, StatusBarIconController.ICON_BLACKLIST,
50                Clock.CLOCK_SECONDS);
51    }
52
53    @Override
54    public void onDetached() {
55        Dependency.get(TunerService.class).removeTunable(this);
56        super.onDetached();
57    }
58
59    @Override
60    public void onTuningChanged(String key, String newValue) {
61        if (StatusBarIconController.ICON_BLACKLIST.equals(key)) {
62            mReceivedClock = true;
63            mBlacklist = StatusBarIconController.getIconBlacklist(newValue);
64            mClockEnabled = !mBlacklist.contains(mClock);
65        } else if (Clock.CLOCK_SECONDS.equals(key)) {
66            mReceivedSeconds = true;
67            mHasSeconds = newValue != null && Integer.parseInt(newValue) != 0;
68        }
69        if (!mHasSetValue && mReceivedClock && mReceivedSeconds) {
70            // Because of the complicated tri-state it can end up looping and setting state back to
71            // what the user didn't choose.  To avoid this, just set the state once and rely on the
72            // preference to handle updates.
73            mHasSetValue = true;
74            if (mClockEnabled && mHasSeconds) {
75                setValue(SECONDS);
76            } else if (mClockEnabled) {
77                setValue(DEFAULT);
78            } else {
79                setValue(DISABLED);
80            }
81        }
82    }
83
84    @Override
85    protected boolean persistString(String value) {
86        Dependency.get(TunerService.class).setValue(Clock.CLOCK_SECONDS, SECONDS.equals(value) ? 1
87                : 0);
88        if (DISABLED.equals(value)) {
89            mBlacklist.add(mClock);
90        } else {
91            mBlacklist.remove(mClock);
92        }
93        Dependency.get(TunerService.class).setValue(StatusBarIconController.ICON_BLACKLIST,
94                TextUtils.join(",", mBlacklist));
95        return true;
96    }
97}
98