summaryrefslogtreecommitdiffstats
path: root/src/com/android/providers/downloads/DownloadNotifier.java
blob: ac52eba2fe2fa9a49b3de04aeb0a24eb090ec490 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.providers.downloads;

import static android.app.DownloadManager.Request.VISIBILITY_VISIBLE;
import static android.app.DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED;
import static android.app.DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_ONLY_COMPLETION;
import static android.provider.Downloads.Impl.STATUS_RUNNING;
import static com.android.providers.downloads.Constants.TAG;

import android.app.DownloadManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.os.SystemClock;
import android.provider.Downloads;
import android.text.TextUtils;
import android.text.format.DateUtils;
import android.util.Log;
import android.util.LongSparseLongArray;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Maps;
import com.google.common.collect.Multimap;

import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;

import javax.annotation.concurrent.GuardedBy;

/**
 * Update {@link NotificationManager} to reflect current {@link DownloadInfo}
 * states. Collapses similar downloads into a single notification, and builds
 * {@link PendingIntent} that launch towards {@link DownloadReceiver}.
 */
public class DownloadNotifier {

    private static final int TYPE_ACTIVE = 1;
    private static final int TYPE_WAITING = 2;
    private static final int TYPE_COMPLETE = 3;

    private final Context mContext;
    private final NotificationManager mNotifManager;

    /**
     * Currently active notifications, mapped from clustering tag to timestamp
     * when first shown.
     *
     * @see #buildNotificationTag(DownloadInfo)
     */
    @GuardedBy("mActiveNotifs")
    private final HashMap<String, Long> mActiveNotifs = Maps.newHashMap();

    /**
     * Current speed of active downloads, mapped from {@link DownloadInfo#mId}
     * to speed in bytes per second.
     */
    @GuardedBy("mDownloadSpeed")
    private final LongSparseLongArray mDownloadSpeed = new LongSparseLongArray();

    /**
     * Last time speed was reproted, mapped from {@link DownloadInfo#mId} to
     * {@link SystemClock#elapsedRealtime()}.
     */
    @GuardedBy("mDownloadSpeed")
    private final LongSparseLongArray mDownloadTouch = new LongSparseLongArray();

    public DownloadNotifier(Context context) {
        mContext = context;
        mNotifManager = (NotificationManager) context.getSystemService(
                Context.NOTIFICATION_SERVICE);
    }

    public void cancelAll() {
        mNotifManager.cancelAll();
    }

    /**
     * Notify the current speed of an active download, used for calculating
     * estimated remaining time.
     */
    public void notifyDownloadSpeed(long id, long bytesPerSecond) {
        synchronized (mDownloadSpeed) {
            if (bytesPerSecond != 0) {
                mDownloadSpeed.put(id, bytesPerSecond);
                mDownloadTouch.put(id, SystemClock.elapsedRealtime());
            } else {
                mDownloadSpeed.delete(id);
                mDownloadTouch.delete(id);
            }
        }
    }

    /**
     * Update {@link NotificationManager} to reflect the given set of
     * {@link DownloadInfo}, adding, collapsing, and removing as needed.
     */
    public void updateWith(Collection<DownloadInfo> downloads) {
        synchronized (mActiveNotifs) {
            updateWithLocked(downloads);
        }
    }

    private void updateWithLocked(Collection<DownloadInfo> downloads) {
        final Resources res = mContext.getResources();

        // Cluster downloads together
        final Multimap<String, DownloadInfo> clustered = ArrayListMultimap.create();
        for (DownloadInfo info : downloads) {
            final String tag = buildNotificationTag(info);
            if (tag != null) {
                clustered.put(tag, info);
            }
        }

        // Build notification for each cluster
        for (String tag : clustered.keySet()) {
            final int type = getNotificationTagType(tag);
            final Collection<DownloadInfo> cluster = clustered.get(tag);

            final Notification.Builder builder = new Notification.Builder(mContext);

            // Use time when cluster was first shown to avoid shuffling
            final long firstShown;
            if (mActiveNotifs.containsKey(tag)) {
                firstShown = mActiveNotifs.get(tag);
            } else {
                firstShown = System.currentTimeMillis();
                mActiveNotifs.put(tag, firstShown);
            }
            builder.setWhen(firstShown);

            // Show relevant icon
            if (type == TYPE_ACTIVE) {
                builder.setSmallIcon(android.R.drawable.stat_sys_download);
            } else if (type == TYPE_WAITING) {
                builder.setSmallIcon(android.R.drawable.stat_sys_warning);
            } else if (type == TYPE_COMPLETE) {
                builder.setSmallIcon(android.R.drawable.stat_sys_download_done);
            }

            // Build action intents
            if (type == TYPE_ACTIVE || type == TYPE_WAITING) {
                // build a synthetic uri for intent identification purposes
                final Uri uri = new Uri.Builder().scheme("active-dl").appendPath(tag).build();
                final Intent intent = new Intent(Constants.ACTION_LIST,
                        uri, mContext, DownloadReceiver.class);
                intent.putExtra(DownloadManager.EXTRA_NOTIFICATION_CLICK_DOWNLOAD_IDS,
                        getDownloadIds(cluster));
                builder.setContentIntent(PendingIntent.getBroadcast(mContext,
                        0, intent, PendingIntent.FLAG_UPDATE_CURRENT));
                builder.setOngoing(true);

            } else if (type == TYPE_COMPLETE) {
                final DownloadInfo info = cluster.iterator().next();
                final Uri uri = ContentUris.withAppendedId(
                        Downloads.Impl.ALL_DOWNLOADS_CONTENT_URI, info.mId);
                builder.setAutoCancel(true);

                final String action;
                if (Downloads.Impl.isStatusError(info.mStatus)) {
                    action = Constants.ACTION_LIST;
                } else {
                    if (info.mDestination != Downloads.Impl.DESTINATION_SYSTEMCACHE_PARTITION) {
                        action = Constants.ACTION_OPEN;
                    } else {
                        action = Constants.ACTION_LIST;
                    }
                }

                final Intent intent = new Intent(action, uri, mContext, DownloadReceiver.class);
                intent.putExtra(DownloadManager.EXTRA_NOTIFICATION_CLICK_DOWNLOAD_IDS,
                        getDownloadIds(cluster));
                builder.setContentIntent(PendingIntent.getBroadcast(mContext,
                        0, intent, PendingIntent.FLAG_UPDATE_CURRENT));

                final Intent hideIntent = new Intent(Constants.ACTION_HIDE,
                        uri, mContext, DownloadReceiver.class);
                builder.setDeleteIntent(PendingIntent.getBroadcast(mContext, 0, hideIntent, 0));
            }

            // Calculate and show progress
            String remainingText = null;
            String percentText = null;
            if (type == TYPE_ACTIVE) {
                long current = 0;
                long total = 0;
                long speed = 0;
                synchronized (mDownloadSpeed) {
                    for (DownloadInfo info : cluster) {
                        if (info.mTotalBytes != -1) {
                            current += info.mCurrentBytes;
                            total += info.mTotalBytes;
                            speed += mDownloadSpeed.get(info.mId);
                        }
                    }
                }

                if (total > 0) {
                    final int percent = (int) ((current * 100) / total);
                    percentText = res.getString(R.string.download_percent, percent);

                    if (speed > 0) {
                        final long remainingMillis = ((total - current) * 1000) / speed;
                        remainingText = res.getString(R.string.download_remaining,
                                DateUtils.formatDuration(remainingMillis));
                    }

                    builder.setProgress(100, percent, false);
                } else {
                    builder.setProgress(100, 0, true);
                }
            }

            // Build titles and description
            final Notification notif;
            if (cluster.size() == 1) {
                final DownloadInfo info = cluster.iterator().next();

                builder.setContentTitle(getDownloadTitle(res, info));

                if (type == TYPE_ACTIVE) {
                    if (!TextUtils.isEmpty(info.mDescription)) {
                        builder.setContentText(info.mDescription);
                    } else {
                        builder.setContentText(remainingText);
                    }
                    builder.setContentInfo(percentText);

                } else if (type == TYPE_WAITING) {
                    builder.setContentText(
                            res.getString(R.string.notification_need_wifi_for_size));

                } else if (type == TYPE_COMPLETE) {
                    if (Downloads.Impl.isStatusError(info.mStatus)) {
                        builder.setContentText(res.getText(R.string.notification_download_failed));
                    } else if (Downloads.Impl.isStatusSuccess(info.mStatus)) {
                        builder.setContentText(
                                res.getText(R.string.notification_download_complete));
                    }
                }

                notif = builder.build();

            } else {
                final Notification.InboxStyle inboxStyle = new Notification.InboxStyle(builder);

                for (DownloadInfo info : cluster) {
                    inboxStyle.addLine(getDownloadTitle(res, info));
                }

                if (type == TYPE_ACTIVE) {
                    builder.setContentTitle(res.getQuantityString(
                            R.plurals.notif_summary_active, cluster.size(), cluster.size()));
                    builder.setContentText(remainingText);
                    builder.setContentInfo(percentText);
                    inboxStyle.setSummaryText(remainingText);

                } else if (type == TYPE_WAITING) {
                    builder.setContentTitle(res.getQuantityString(
                            R.plurals.notif_summary_waiting, cluster.size(), cluster.size()));
                    builder.setContentText(
                            res.getString(R.string.notification_need_wifi_for_size));
                    inboxStyle.setSummaryText(
                            res.getString(R.string.notification_need_wifi_for_size));
                }

                notif = inboxStyle.build();
            }

            mNotifManager.notify(tag, 0, notif);
        }

        // Remove stale tags that weren't renewed
        final Iterator<String> it = mActiveNotifs.keySet().iterator();
        while (it.hasNext()) {
            final String tag = it.next();
            if (!clustered.containsKey(tag)) {
                mNotifManager.cancel(tag, 0);
                it.remove();
            }
        }
    }

    private static CharSequence getDownloadTitle(Resources res, DownloadInfo info) {
        if (!TextUtils.isEmpty(info.mTitle)) {
            return info.mTitle;
        } else {
            return res.getString(R.string.download_unknown_title);
        }
    }

    private long[] getDownloadIds(Collection<DownloadInfo> infos) {
        final long[] ids = new long[infos.size()];
        int i = 0;
        for (DownloadInfo info : infos) {
            ids[i++] = info.mId;
        }
        return ids;
    }

    public void dumpSpeeds() {
        synchronized (mDownloadSpeed) {
            for (int i = 0; i < mDownloadSpeed.size(); i++) {
                final long id = mDownloadSpeed.keyAt(i);
                final long delta = SystemClock.elapsedRealtime() - mDownloadTouch.get(id);
                Log.d(TAG, "Download " + id + " speed " + mDownloadSpeed.valueAt(i) + "bps, "
                        + delta + "ms ago");
            }
        }
    }

    /**
     * Build tag used for collapsing several {@link DownloadInfo} into a single
     * {@link Notification}.
     */
    private static String buildNotificationTag(DownloadInfo info) {
        if (info.mStatus == Downloads.Impl.STATUS_QUEUED_FOR_WIFI) {
            return TYPE_WAITING + ":" + info.mPackage;
        } else if (isActiveAndVisible(info)) {
            return TYPE_ACTIVE + ":" + info.mPackage;
        } else if (isCompleteAndVisible(info)) {
            // Complete downloads always have unique notifs
            return TYPE_COMPLETE + ":" + info.mId;
        } else {
            return null;
        }
    }

    /**
     * Return the cluster type of the given tag, as created by
     * {@link #buildNotificationTag(DownloadInfo)}.
     */
    private static int getNotificationTagType(String tag) {
        return Integer.parseInt(tag.substring(0, tag.indexOf(':')));
    }

    private static boolean isActiveAndVisible(DownloadInfo download) {
        return download.mStatus == STATUS_RUNNING &&
                (download.mVisibility == VISIBILITY_VISIBLE
                || download.mVisibility == VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    }

    private static boolean isCompleteAndVisible(DownloadInfo download) {
        return Downloads.Impl.isStatusCompleted(download.mStatus) &&
                (download.mVisibility == VISIBILITY_VISIBLE_NOTIFY_COMPLETED
                || download.mVisibility == VISIBILITY_VISIBLE_NOTIFY_ONLY_COMPLETION);
    }
}