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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_ |
6 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_ | 6 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_ |
7 | 7 |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/supports_user_data.h" | 9 #include "base/supports_user_data.h" |
10 #include "content/public/browser/web_contents.h" | 10 #include "content/public/browser/web_contents.h" |
11 | 11 |
12 namespace content { | 12 namespace content { |
13 | 13 |
14 // A base class for classes attached to, and scoped to, the lifetime of a | 14 // A base class for classes attached to, and scoped to, the lifetime of a |
15 // WebContents. For example: | 15 // WebContents. For example: |
16 // | 16 // |
17 // --- in foo_tab_helper.h --- | 17 // --- in foo_tab_helper.h --- |
18 // class FooTabHelper : public content::WebContentsUserData<FooTabHelper> { | 18 // class FooTabHelper : public content::WebContentsUserData<FooTabHelper> { |
19 // public: | 19 // public: |
20 // virtual ~FooTabHelper(); | 20 // virtual ~FooTabHelper(); |
21 // // ... more public stuff here ... | 21 // // ... more public stuff here ... |
22 // private: | 22 // private: |
23 // explicit FooTabHelper(content::WebContents* contents); | 23 // explicit FooTabHelper(content::WebContents* contents); |
24 // friend class content::WebContentsUserData<FooTabHelper>; | 24 // friend class content::WebContentsUserData<FooTabHelper>; |
25 // // ... more private stuff here ... | 25 // // ... more private stuff here ... |
26 // } | 26 // }; |
Avi (use Gerrit)
2014/05/20 14:41:39
This is correct but doesn't belong in this CL.
| |
27 // --- in foo_tab_helper.cc --- | 27 // --- in foo_tab_helper.cc --- |
28 // DEFINE_WEB_CONTENTS_USER_DATA_KEY(FooTabHelper); | 28 // DEFINE_WEB_CONTENTS_USER_DATA_KEY(FooTabHelper); |
29 // | 29 // |
30 template <typename T> | 30 template <typename T> |
31 class WebContentsUserData : public base::SupportsUserData::Data { | 31 class WebContentsUserData : public base::SupportsUserData::Data { |
32 public: | 32 public: |
33 // Creates an object of type T, and attaches it to the specified WebContents. | 33 // Creates an object of type T, and attaches it to the specified WebContents. |
34 // If an instance is already attached, does nothing. | 34 // If an instance is already attached, does nothing. |
35 static void CreateForWebContents(WebContents* contents) { | 35 static void CreateForWebContents(WebContents* contents) { |
36 DCHECK(contents); | 36 DCHECK(contents); |
(...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
68 // a declaration. Without it, this would be merely a declaration of a template | 68 // a declaration. Without it, this would be merely a declaration of a template |
69 // specialization. (C++98: 14.7.3.15; C++11: 14.7.3.13) | 69 // specialization. (C++98: 14.7.3.15; C++11: 14.7.3.13) |
70 // | 70 // |
71 #define DEFINE_WEB_CONTENTS_USER_DATA_KEY(TYPE) \ | 71 #define DEFINE_WEB_CONTENTS_USER_DATA_KEY(TYPE) \ |
72 template<> \ | 72 template<> \ |
73 int content::WebContentsUserData<TYPE>::kLocatorKey = 0 | 73 int content::WebContentsUserData<TYPE>::kLocatorKey = 0 |
74 | 74 |
75 } // namespace content | 75 } // namespace content |
76 | 76 |
77 #endif // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_ | 77 #endif // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_ |
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