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Side by Side Diff: content/browser/notifications/notification_id_generator.h

Issue 1133813002: Introduce the NotificationIdGenerator in //content. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 7 months ago
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1 // Copyright 2015 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_BROWSER_NOTIFICATIONS_NOTIFICATION_ID_GENERATOR_H_
6 #define CONTENT_BROWSER_NOTIFICATIONS_NOTIFICATION_ID_GENERATOR_H_
7
8 #include <stdint.h>
9 #include <string>
10
11 #include "content/common/content_export.h"
12
13 class GURL;
14
15 namespace content {
16
17 class BrowserContext;
18
19 // Generates deterministic notification ids for Web Notifications.
20 //
21 // The notification id must be deterministic for a given browser context, origin
22 // and tag, when the tag is non-empty, or unique for the given notification when
johnme 2015/05/27 18:18:35 Please clearly explain that calling new Notificati
Peter Beverloo 2015/05/28 12:51:44 Done.
23 // the tag is empty. For non-persistent notifications, the uniqueness will be
24 // based on the render process id. For persistent notifications, the generated
25 // id will be globally unique for the lifetime of the notification database.
26 //
27 // The notification id will be used by the notification service for determining
28 // when to replace notifications, and as the unique identifier when a
29 // notification has to be closed programmatically.
30 //
31 // It is important to note that, for persistent notifications, the generated
32 // notification id can outlive the browser process responsible for creating it.
33 class CONTENT_EXPORT NotificationIdGenerator {
34 public:
35 NotificationIdGenerator(BrowserContext* browser_context,
36 int render_process_id);
37 ~NotificationIdGenerator();
38
39 // Generates an id for a persistent notification given the notification's
40 // origin, tag and persistent notification id. The persistent notification id
41 // will have been created by the persistent notification database.
42 std::string GenerateForPersistentNotification(
43 const GURL& origin,
44 const std::string& tag,
45 int64_t persistent_notification_id) const;
46
47 // Generates an id for a non-persistent notification given the notification's
48 // origin, tag and non-persistent notification id. The non-persistent
49 // notification id will have created by the renderer with |render_process_id|.
50 std::string GenerateForNonPersistentNotification(
51 const GURL& origin,
52 const std::string& tag,
53 int non_persistent_notification_id) const;
54
55 private:
56 // The NotificationMessageFilter that owns |this| will outlive the context.
57 BrowserContext* browser_context_;
58
59 int render_process_id_;
60 };
61
62 } // namespace context
63
64 #endif // CONTENT_BROWSER_NOTIFICATIONS_NOTIFICATION_ID_GENERATOR_H_
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