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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package org.chromium.components.background_task_scheduler; | |
6 | |
7 import android.os.Build; | |
8 | |
9 import org.chromium.base.ThreadUtils; | |
10 | |
11 /** | |
12 * A factory for {@link BackgroundTaskScheduler} that ensures there is only ever a single instance. | |
David Trainor- moved to gerrit
2017/02/24 07:19:49
Do we really ensure this? Should we make the task
Peter Beverloo
2017/02/24 18:07:09
The BackgroundTaskScheduler's constructor already
nyquist
2017/02/24 23:41:11
I guess since the constructor is package protected
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13 */ | |
14 public final class BackgroundTaskSchedulerFactory { | |
15 private static BackgroundTaskScheduler sInstance; | |
16 | |
17 private static BackgroundTaskSchedulerDelegate getSchedulerDelegate() { | |
Peter Beverloo
2017/02/24 18:07:09
Wild idea: should we mark this with @TargetApi on
nyquist
2017/02/24 23:41:12
Good call. I'll do that for now until we have GcmN
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18 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { | |
19 return new BackgroundTaskSchedulerJobService(); | |
20 } else { | |
21 throw new RuntimeException("Not able to schedule through GCM yet."); | |
22 } | |
23 } | |
24 | |
25 /** | |
26 * @return the current instance of the {@link BackgroundTaskScheduler}. Crea tes one if none | |
27 * exist. | |
28 */ | |
29 public static BackgroundTaskScheduler getScheduler() { | |
30 ThreadUtils.assertOnUiThread(); | |
31 if (sInstance == null) sInstance = new BackgroundTaskScheduler(getSchedu lerDelegate()); | |
32 return sInstance; | |
33 } | |
34 | |
35 // Do not instantiate. | |
36 private BackgroundTaskSchedulerFactory() {} | |
37 } | |
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