1/*
2 * Copyright (C) 2017 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.statusbar.policy;
16
17import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.FIELD_NUM_STATUS_ICONS;
18import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.FIELD_STATUS_ICONS;
19import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.STATUS_BAR_ICONS_CHANGED;
20import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.TYPE_ACTION;
21
22import android.content.Context;
23import android.metrics.LogMaker;
24import android.os.Handler;
25import android.os.Looper;
26import android.support.annotation.VisibleForTesting;
27import android.util.ArraySet;
28
29import com.android.internal.logging.MetricsLogger;
30
31import java.util.Arrays;
32import java.util.List;
33
34public class IconLoggerImpl implements IconLogger {
35
36    // Minimum ms between log statements.
37    // NonFinalForTesting
38    @VisibleForTesting
39    protected static long MIN_LOG_INTERVAL = 1000;
40
41    private final Context mContext;
42    private final Handler mHandler;
43    private final MetricsLogger mLogger;
44    private final ArraySet<String> mIcons = new ArraySet<>();
45    private final List<String> mIconIndex;
46    private long mLastLog = System.currentTimeMillis();
47
48    public IconLoggerImpl(Context context, Looper bgLooper, MetricsLogger logger) {
49        mContext = context;
50        mHandler = new Handler(bgLooper);
51        mLogger = logger;
52        String[] icons = mContext.getResources().getStringArray(
53                com.android.internal.R.array.config_statusBarIcons);
54        mIconIndex = Arrays.asList(icons);
55        doLog();
56    }
57
58    @Override
59    public void onIconShown(String tag) {
60        synchronized (mIcons) {
61            if (mIcons.contains(tag)) return;
62            mIcons.add(tag);
63        }
64        if (!mHandler.hasCallbacks(mLog)) {
65            mHandler.postDelayed(mLog, MIN_LOG_INTERVAL);
66        }
67    }
68
69    @Override
70    public void onIconHidden(String tag) {
71        synchronized (mIcons) {
72            if (!mIcons.contains(tag)) return;
73            mIcons.remove(tag);
74        }
75        if (!mHandler.hasCallbacks(mLog)) {
76            mHandler.postDelayed(mLog, MIN_LOG_INTERVAL);
77        }
78    }
79
80    private void doLog() {
81        long time = System.currentTimeMillis();
82        long timeSinceLastLog = time - mLastLog;
83        mLastLog = time;
84
85        ArraySet<String> icons;
86        synchronized (mIcons) {
87            icons = new ArraySet<>(mIcons);
88        }
89        mLogger.write(new LogMaker(STATUS_BAR_ICONS_CHANGED)
90                .setType(TYPE_ACTION)
91                .setLatency(timeSinceLastLog)
92                .addTaggedData(FIELD_NUM_STATUS_ICONS, icons.size())
93                .addTaggedData(FIELD_STATUS_ICONS, getBitField(icons)));
94    }
95
96    private int getBitField(ArraySet<String> icons) {
97        int iconsVisible = 0;
98        for (String icon : icons) {
99            int index = mIconIndex.indexOf(icon);
100            if (index >= 0) {
101                iconsVisible |= (1 << index);
102            }
103        }
104        return iconsVisible;
105    }
106
107    private final Runnable mLog = this::doLog;
108}
109