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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_SESSIONS_CONTENT_EXTENDED_INFO_HANDLER_H_ | |
6 #define COMPONENTS_SESSIONS_CONTENT_EXTENDED_INFO_HANDLER_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "components/sessions/core/sessions_export.h" | |
11 | |
12 namespace content { | |
13 class NavigationEntry; | |
14 } | |
15 | |
16 namespace sessions { | |
17 | |
18 // This interface is used to store and retrieve arbitrary key/value pairs for | |
19 // a NavigationEntry that are not a core part of NavigationEntry. | |
20 // WARNING: implementations must deal with versioning. In particular | |
21 // RestoreExtendedInfo() may be called with data from a previous version of | |
22 // Chrome. | |
23 class SESSIONS_EXPORT ExtendedInfoHandler { | |
24 public: | |
25 virtual ~ExtendedInfoHandler() {} | |
26 | |
27 // Returns the extended info from NavigationEntry for | |
sky
2016/09/29 03:08:19
How about: "Returns the data to write to disk for
jianli
2016/09/29 22:02:29
Done.
| |
28 // SerializedNavigationEntry to save it. | |
29 virtual std::string GetExtendedInfo( | |
30 const content::NavigationEntry& entry) const = 0; | |
31 | |
32 // Puts the extended info, extracted from SerializedNavigationEntry, into | |
sky
2016/09/29 03:08:19
And similar to the above, "Restores |info| which w
jianli
2016/09/29 22:02:29
Done.
| |
33 // NavigationEntry. | |
34 virtual void RestoreExtendedInfo( | |
35 const std::string& info, content::NavigationEntry* entry) = 0; | |
36 }; | |
37 | |
38 } // namespace sessions | |
39 | |
40 #endif // COMPONENTS_SESSIONS_CONTENT_EXTENDED_INFO_HANDLER_H_ | |
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