| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_TRANSLATE_CHROME_TRANSLATE_CLIENT_H_ |
| #define CHROME_BROWSER_TRANSLATE_CHROME_TRANSLATE_CLIENT_H_ |
| |
| #include <string> |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "chrome/browser/ui/translate/translate_bubble_model.h" |
| #include "components/translate/content/browser/content_translate_driver.h" |
| #include "components/translate/core/browser/translate_client.h" |
| #include "components/translate/core/browser/translate_step.h" |
| #include "components/translate/core/common/translate_errors.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "content/public/browser/web_contents_user_data.h" |
| |
| #if defined(CLD2_DYNAMIC_MODE) |
| #include "base/basictypes.h" |
| #include "base/lazy_instance.h" |
| #include "base/synchronization/lock.h" |
| #include "base/task_runner.h" |
| #endif |
| |
| namespace base { |
| class File; |
| } // namespace base |
| |
| namespace content { |
| class BrowserContext; |
| class WebContents; |
| } // namespace content |
| |
| namespace test { |
| class ScopedCLDDynamicDataHarness; |
| } // namespace test |
| |
| struct LanguageDetectionDetails; |
| class LanguageState; |
| class PrefService; |
| class TranslateAcceptLanguages; |
| class TranslatePrefs; |
| class TranslateManager; |
| |
| class ChromeTranslateClient |
| : public TranslateClient, |
| public content::WebContentsObserver, |
| public content::WebContentsUserData<ChromeTranslateClient> { |
| public: |
| virtual ~ChromeTranslateClient(); |
| |
| // Gets the LanguageState associated with the page. |
| LanguageState& GetLanguageState(); |
| |
| // Returns the ContentTranslateDriver instance associated with this |
| // WebContents. |
| ContentTranslateDriver& translate_driver() { return translate_driver_; } |
| |
| // Helper method to return a new TranslatePrefs instance. |
| static scoped_ptr<TranslatePrefs> CreateTranslatePrefs(PrefService* prefs); |
| |
| // Helper method to return the TranslateAcceptLanguages instance associated |
| // with |browser_context|. |
| static TranslateAcceptLanguages* GetTranslateAcceptLanguages( |
| content::BrowserContext* browser_context); |
| |
| // Helper method to return the TranslateManager instance associated with |
| // |web_contents|, or NULL if there is no such associated instance. |
| static TranslateManager* GetManagerFromWebContents( |
| content::WebContents* web_contents); |
| |
| // Gets |source| and |target| language for translation. |
| static void GetTranslateLanguages(content::WebContents* web_contents, |
| std::string* source, |
| std::string* target); |
| |
| // Gets the associated TranslateManager. |
| TranslateManager* GetTranslateManager(); |
| |
| // Gets the associated WebContents. Returns NULL if the WebContents is being |
| // destroyed. |
| content::WebContents* GetWebContents(); |
| |
| // Number of attempts before waiting for a page to be fully reloaded. |
| void set_translate_max_reload_attempts(int attempts) { |
| max_reload_check_attempts_ = attempts; |
| } |
| |
| // TranslateClient implementation. |
| virtual TranslateDriver* GetTranslateDriver() OVERRIDE; |
| virtual PrefService* GetPrefs() OVERRIDE; |
| virtual scoped_ptr<TranslatePrefs> GetTranslatePrefs() OVERRIDE; |
| virtual TranslateAcceptLanguages* GetTranslateAcceptLanguages() OVERRIDE; |
| virtual int GetInfobarIconID() const OVERRIDE; |
| virtual scoped_ptr<infobars::InfoBar> CreateInfoBar( |
| scoped_ptr<TranslateInfoBarDelegate> delegate) const OVERRIDE; |
| virtual void ShowTranslateUI(translate::TranslateStep step, |
| const std::string source_language, |
| const std::string target_language, |
| TranslateErrors::Type error_type, |
| bool triggered_from_menu) OVERRIDE; |
| virtual bool IsTranslatableURL(const GURL& url) OVERRIDE; |
| virtual void ShowReportLanguageDetectionErrorUI( |
| const GURL& report_url) OVERRIDE; |
| |
| private: |
| explicit ChromeTranslateClient(content::WebContents* web_contents); |
| friend class content::WebContentsUserData<ChromeTranslateClient>; |
| friend class test::ScopedCLDDynamicDataHarness; // For cleaning static state. |
| |
| // content::WebContentsObserver implementation. |
| virtual void NavigationEntryCommitted( |
| const content::LoadCommittedDetails& load_details) OVERRIDE; |
| virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; |
| virtual void DidNavigateAnyFrame( |
| const content::LoadCommittedDetails& details, |
| const content::FrameNavigateParams& params) OVERRIDE; |
| virtual void WebContentsDestroyed() OVERRIDE; |
| |
| // Initiates translation once the page is finished loading. |
| void InitiateTranslation(const std::string& page_lang, int attempt); |
| void OnLanguageDetermined(const LanguageDetectionDetails& details, |
| bool page_needs_translation); |
| void OnPageTranslated(int32 page_id, |
| const std::string& original_lang, |
| const std::string& translated_lang, |
| TranslateErrors::Type error_type); |
| |
| #if defined(CLD2_DYNAMIC_MODE) |
| // Called when we receive ChromeViewHostMsg_NeedCLDData from a renderer. |
| // If we have already cached the data, responds immediately; else, enqueues |
| // a HandleCLDDataRequest on the blocking pool to cache the data. |
| // Acquires and releases s_file_lock_ in a non-blocking manner; queries |
| // handled while the file is being cached will gracefully and immediately |
| // fail. |
| // It is up to the originator of the message to poll again later if required; |
| // no "negative response" will be generated. |
| void OnCLDDataRequested(); |
| |
| // Invoked on the blocking pool in order to cache the data. When successful, |
| // immediately responds to the request that initiated OnCLDDataRequested. |
| // Holds s_file_lock_ while the file is being cached. |
| static void HandleCLDDataRequest(); |
| |
| // If the CLD data is ready, send it to the renderer. Briefly checks the lock. |
| void MaybeSendCLDDataAvailable(); |
| |
| // Sends the renderer a response containing the data file handle. No locking. |
| void SendCLDDataAvailable(const base::File* handle, |
| const uint64 data_offset, |
| const uint64 data_length); |
| |
| // The data file, cached as long as the process stays alive. |
| // We also track the offset at which the data starts, and its length. |
| static base::File* s_cached_file_; // guarded by file_lock_ |
| static uint64 s_cached_data_offset_; // guarded by file_lock_ |
| static uint64 s_cached_data_length_; // guarded by file_lock_ |
| |
| // Guards s_cached_file_ |
| static base::LazyInstance<base::Lock> s_file_lock_; |
| |
| #endif |
| |
| // Shows the translate bubble. |
| void ShowBubble(translate::TranslateStep step, |
| TranslateErrors::Type error_type); |
| |
| // Max number of attempts before checking if a page has been reloaded. |
| int max_reload_check_attempts_; |
| |
| ContentTranslateDriver translate_driver_; |
| scoped_ptr<TranslateManager> translate_manager_; |
| |
| // Necessary for binding the callback to HandleCLDDataRequest on the blocking |
| // pool and for delaying translation initialization until the page has |
| // finished loading on a reload. |
| base::WeakPtrFactory<ChromeTranslateClient> weak_pointer_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChromeTranslateClient); |
| }; |
| |
| #endif // CHROME_BROWSER_TRANSLATE_CHROME_TRANSLATE_CLIENT_H_ |