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1 // Copyright 2016 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 #ifndef COMPONENTS_OFFLINE_PAGES_BACKGROUND_SCHEDULER_H_ | |
6 #define COMPONENTS_OFFLINE_PAGES_BACKGROUND_SCHEDULER_H_ | |
7 | |
8 namespace offline_pages { | |
9 | |
10 // Interface of a class responsible for scheduling a task to initiate | |
11 // processing of background offlining requests upon select system conditions | |
12 // (such as having a network connection). | |
13 class Scheduler { | |
14 public: | |
15 // Defines a set of system conditions to trigger background processing. | |
16 struct TriggerConditions { | |
17 TriggerConditions(bool power, int battery, bool unmetered) | |
18 : require_power_connected(power), | |
19 minimum_battery_percentage(battery), | |
20 require_unmetered_network(unmetered) {} | |
21 bool require_power_connected; | |
22 int minimum_battery_percentage; | |
23 bool require_unmetered_network; | |
24 }; | |
25 | |
26 Scheduler() {} | |
27 virtual ~Scheduler() {} | |
28 | |
29 // Schedules the triggering of a task subject to |trigger_conditions|. | |
30 // This may overwrite any previous scheduled task with a new one for | |
31 // these conditions. That is, only one set of triggering conditions | |
32 // is scheduled at a time. | |
33 virtual void Schedule(const TriggerConditions& trigger_conditions) = 0; | |
34 | |
35 // Schedules the triggering of a task in case Chromium is killed, | |
36 // so we can continue processing background download requests. This will | |
37 // not overwrite existing tasks. | |
38 virtual void BackupSchedule(const TriggerConditions& trigger_conditions, | |
39 long delay_in_seconds) = 0; | |
40 | |
41 // Unschedules the currently scheduled task, if any. | |
42 virtual void Unschedule() = 0; | |
43 }; | |
44 | |
45 } // namespace offline_pages | |
46 | |
47 #endif // COMPONENTS_OFFLINE_PAGES_BACKGROUND_SCHEDULER_H_ | |
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