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