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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 #ifndef CONTENT_PUBLIC_BROWSER_BACKGROUND_FETCH_CLIENT_H_ | |
6 #define CONTENT_PUBLIC_BROWSER_BACKGROUND_FETCH_CLIENT_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "content/common/content_export.h" | |
11 | |
12 namespace content { | |
13 | |
14 // The BackgroundFetchClient provides a communication path for BackgroundFetch | |
15 // to use functionality provided by embedders to display offline content and | |
16 // notifications about ongoing BackgroundFetch operations. It also provides a | |
17 // mechanism for BackgroundFetch to provide a Delegate to allow embedders to | |
18 // control ongoing BackgroundFetch operations. | |
Peter Beverloo
2017/03/31 01:32:24
We use "Background Fetch" w/ space elsewhere.
I w
harkness
2017/03/31 10:11:45
Done.
| |
19 class CONTENT_EXPORT BackgroundFetchClient { | |
20 public: | |
21 // Class for access to the BackgroundFetch system. Manages in progress fetches | |
22 // and supports pause, resume, cancel, and UI update. | |
23 class CONTENT_EXPORT Delegate { | |
24 public: | |
25 // Cancel all fetches associated with the |registration_id|. | |
26 virtual void CancelDownload(const std::string& registration_id) = 0; | |
27 | |
28 // Pause all fetches associated with the |registration_id|. | |
29 virtual void PauseDownload(const std::string& registration_id) = 0; | |
30 | |
31 // Resume any fetches associated with the |registration_id|. | |
32 virtual void ResumeDownload(const std::string& registration_id) = 0; | |
33 | |
34 protected: | |
35 virtual ~Delegate() {} | |
36 }; | |
37 | |
38 // The Delegate provided is owned by the content layer. If a | |
39 // delegate has ever been set through SetDelegate, the content layer | |
40 // guarantees to call SetDelegate with |nullptr| before destroying the | |
41 // existing delegate. | |
Peter Beverloo
2017/03/31 01:32:24
The content layer is rather large and hard to reas
harkness
2017/03/31 10:11:44
Done.
| |
42 virtual void SetDelegate(Delegate* delegate) = 0; | |
43 | |
44 virtual ~BackgroundFetchClient() {} | |
Peter Beverloo
2017/03/31 01:32:24
Can this be protected?
harkness
2017/03/31 10:11:45
Done.
| |
45 }; | |
46 | |
47 } // namespace content | |
48 | |
49 #endif // CONTENT_PUBLIC_BROWSER_BACKGROUND_FETCH_CLIENT_H_ | |
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