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