chrome/browser/translate/chrome_translate_client.h

   1 // Copyright 2014 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 CHROME_BROWSER_TRANSLATE_CHROME_TRANSLATE_CLIENT_H_
   6 #define CHROME_BROWSER_TRANSLATE_CHROME_TRANSLATE_CLIENT_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chrome/browser/ui/translate/translate_bubble_model.h"
  12 #include "components/translate/content/browser/browser_cld_data_provider.h"
  13 #include "components/translate/content/browser/content_translate_driver.h"
  14 #include "components/translate/core/browser/translate_client.h"
  15 #include "components/translate/core/browser/translate_step.h"
  16 #include "components/translate/core/common/translate_errors.h"
  17 #include "content/public/browser/web_contents_observer.h"
  18 #include "content/public/browser/web_contents_user_data.h"
  19
  20 namespace content {
  21 class BrowserContext;
  22 class WebContents;
  23 }  // namespace content
  24
  25 namespace test {
  26 class ScopedCLDDynamicDataHarness;
  27 }  // namespace test
  28
  29 class PrefService;
  30
  31 namespace translate {
  32 class LanguageState;
  33 class TranslateAcceptLanguages;
  34 class TranslatePrefs;
  35 class TranslateManager;
  36 }  // namespace translate
  37
  38 class ChromeTranslateClient
  39     : public translate::TranslateClient,
  40       public translate::ContentTranslateDriver::Observer,
  41       public content::WebContentsObserver,
  42       public content::WebContentsUserData<ChromeTranslateClient> {
  43  public:
  44   ~ChromeTranslateClient() override;
  45
  46   // Gets the LanguageState associated with the page.
  47   translate::LanguageState& GetLanguageState();
  48
  49   // Returns the ContentTranslateDriver instance associated with this
  50   // WebContents.
  51   translate::ContentTranslateDriver& translate_driver() {
  52     return translate_driver_;
  53   }
  54
  55   // Helper method to return a new TranslatePrefs instance.
  56   static scoped_ptr<translate::TranslatePrefs> CreateTranslatePrefs(
  57       PrefService* prefs);
  58
  59   // Helper method to return the TranslateAcceptLanguages instance associated
  60   // with |browser_context|.
  61   static translate::TranslateAcceptLanguages* GetTranslateAcceptLanguages(
  62       content::BrowserContext* browser_context);
  63
  64   // Helper method to return the TranslateManager instance associated with
  65   // |web_contents|, or NULL if there is no such associated instance.
  66   static translate::TranslateManager* GetManagerFromWebContents(
  67       content::WebContents* web_contents);
  68
  69   // Gets |source| and |target| language for translation.
  70   static void GetTranslateLanguages(content::WebContents* web_contents,
  71                                     std::string* source,
  72                                     std::string* target);
  73
  74   // Gets the associated TranslateManager.
  75   translate::TranslateManager* GetTranslateManager();
  76
  77   // Gets the associated WebContents. Returns NULL if the WebContents is being
  78   // destroyed.
  79   content::WebContents* GetWebContents();
  80
  81   // TranslateClient implementation.
  82   translate::TranslateDriver* GetTranslateDriver() override;
  83   PrefService* GetPrefs() override;
  84   scoped_ptr<translate::TranslatePrefs> GetTranslatePrefs() override;
  85   translate::TranslateAcceptLanguages* GetTranslateAcceptLanguages() override;
  86   int GetInfobarIconID() const override;
  87   scoped_ptr<infobars::InfoBar> CreateInfoBar(
  88       scoped_ptr<translate::TranslateInfoBarDelegate> delegate) const override;
  89   void ShowTranslateUI(translate::TranslateStep step,
  90                        const std::string source_language,
  91                        const std::string target_language,
  92                        translate::TranslateErrors::Type error_type,
  93                        bool triggered_from_menu) override;
  94   bool IsTranslatableURL(const GURL& url) override;
  95   void ShowReportLanguageDetectionErrorUI(const GURL& report_url) override;
  96
  97   // ContentTranslateDriver::Observer implementation.
  98   void OnLanguageDetermined(
  99       const translate::LanguageDetectionDetails& details) override;
 100   void OnPageTranslated(const std::string& original_lang,
 101                         const std::string& translated_lang,
 102                         translate::TranslateErrors::Type error_type) override;
 103
 104  private:
 105   explicit ChromeTranslateClient(content::WebContents* web_contents);
 106   friend class content::WebContentsUserData<ChromeTranslateClient>;
 107
 108   // content::WebContentsObserver implementation.
 109   bool OnMessageReceived(const IPC::Message& message) override;
 110   void WebContentsDestroyed() override;
 111
 112   // Shows the translate bubble.
 113   void ShowBubble(translate::TranslateStep step,
 114                   translate::TranslateErrors::Type error_type);
 115
 116   translate::ContentTranslateDriver translate_driver_;
 117   scoped_ptr<translate::TranslateManager> translate_manager_;
 118
 119   // Provides CLD data for this process.
 120   scoped_ptr<translate::BrowserCldDataProvider> cld_data_provider_;
 121
 122   DISALLOW_COPY_AND_ASSIGN(ChromeTranslateClient);
 123 };
 124
 125 #endif  // CHROME_BROWSER_TRANSLATE_CHROME_TRANSLATE_CLIENT_H_