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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 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 CHROME_BROWSER_TRANSLATE_TRANSLATE_TAB_HELPER_H_ | 5 #ifndef CHROME_BROWSER_TRANSLATE_TRANSLATE_TAB_HELPER_H_ |
6 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_TAB_HELPER_H_ | 6 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_TAB_HELPER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
| 10 #include "base/lazy_instance.h" |
10 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/memory/weak_ptr.h" |
| 13 #include "base/platform_file.h" |
| 14 #include "base/synchronization/lock.h" |
| 15 #include "base/task_runner.h" |
11 #include "chrome/browser/ui/translate/translate_bubble_model.h" | 16 #include "chrome/browser/ui/translate/translate_bubble_model.h" |
12 #include "components/translate/content/browser/content_translate_driver.h" | 17 #include "components/translate/content/browser/content_translate_driver.h" |
13 #include "components/translate/core/browser/translate_client.h" | 18 #include "components/translate/core/browser/translate_client.h" |
14 #include "components/translate/core/common/translate_errors.h" | 19 #include "components/translate/core/common/translate_errors.h" |
15 #include "content/public/browser/web_contents_observer.h" | 20 #include "content/public/browser/web_contents_observer.h" |
16 #include "content/public/browser/web_contents_user_data.h" | 21 #include "content/public/browser/web_contents_user_data.h" |
17 | 22 |
18 namespace content { | 23 namespace content { |
19 class BrowserContext; | 24 class BrowserContext; |
20 class WebContents; | 25 class WebContents; |
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94 virtual void WebContentsDestroyed( | 99 virtual void WebContentsDestroyed( |
95 content::WebContents* web_contents) OVERRIDE; | 100 content::WebContents* web_contents) OVERRIDE; |
96 | 101 |
97 void OnLanguageDetermined(const LanguageDetectionDetails& details, | 102 void OnLanguageDetermined(const LanguageDetectionDetails& details, |
98 bool page_needs_translation); | 103 bool page_needs_translation); |
99 void OnPageTranslated(int32 page_id, | 104 void OnPageTranslated(int32 page_id, |
100 const std::string& original_lang, | 105 const std::string& original_lang, |
101 const std::string& translated_lang, | 106 const std::string& translated_lang, |
102 TranslateErrors::Type error_type); | 107 TranslateErrors::Type error_type); |
103 | 108 |
| 109 #if defined(CLD2_DYNAMIC_MODE) |
| 110 // Called when we receive ChromeViewHostMsg_NeedCLDData from a renderer. |
| 111 // If we have already cached the data, responds immediately; else, enqueues |
| 112 // a HandleCLDDataRequest on the blocking pool to cache the data. |
| 113 // Acquires and releases s_file_lock_ in a non-blocking manner; queries |
| 114 // handled while the file is being cached will gracefully and immediately |
| 115 // fail. |
| 116 // It is up to the originator of the message to poll again later if required; |
| 117 // no "negative response" will be generated. |
| 118 void OnCLDDataRequested(); |
| 119 |
| 120 // Invoked on the blocking pool in order to cache the data. When successful, |
| 121 // immediately responds to the request that initiated OnCLDDataRequested. |
| 122 // Holds s_file_lock_ while the file is being cached. |
| 123 static void HandleCLDDataRequest(); |
| 124 |
| 125 // If the CLD data is ready, send it to the renderer. Briefly checks the lock. |
| 126 void MaybeSendCLDDataAvailable(); |
| 127 |
| 128 // Sends the renderer a response containing the data file handle. No locking. |
| 129 void SendCLDDataAvailable(const base::PlatformFile handle); |
| 130 |
| 131 // Necessary for binding the callback to HandleCLDDataRequest on the blocking |
| 132 // pool. |
| 133 base::WeakPtrFactory<TranslateTabHelper> weak_pointer_factory_; |
| 134 |
| 135 // The data file, cached as long as the process stays alive. |
| 136 static base::PlatformFile s_cached_platform_file_; // guarded by file_lock_ |
| 137 |
| 138 // Guards s_cached_platform_file_ |
| 139 static base::LazyInstance<base::Lock> s_file_lock_; |
| 140 #endif |
| 141 |
104 // Shows the translate bubble. | 142 // Shows the translate bubble. |
105 void ShowBubble(TranslateStep step, TranslateErrors::Type error_type); | 143 void ShowBubble(TranslateStep step, TranslateErrors::Type error_type); |
106 | 144 |
107 ContentTranslateDriver translate_driver_; | 145 ContentTranslateDriver translate_driver_; |
108 scoped_ptr<TranslateManager> translate_manager_; | 146 scoped_ptr<TranslateManager> translate_manager_; |
109 | 147 |
110 DISALLOW_COPY_AND_ASSIGN(TranslateTabHelper); | 148 DISALLOW_COPY_AND_ASSIGN(TranslateTabHelper); |
111 }; | 149 }; |
112 | 150 |
113 #endif // CHROME_BROWSER_TRANSLATE_TRANSLATE_TAB_HELPER_H_ | 151 #endif // CHROME_BROWSER_TRANSLATE_TRANSLATE_TAB_HELPER_H_ |
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