Detecting form locale

chrome/browser/tab_contents/language_state.h

 // Copyright (c) 2010 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_TAB_CONTENTS_LANGUAGE_STATE_H_
 #define CHROME_BROWSER_TAB_CONTENTS_LANGUAGE_STATE_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "chrome/browser/tab_contents/navigation_controller.h"
 
 // This class holds the language state of the current page.
 // There is one LanguageState instance per TabContents.
 // It is used to determine when navigating to a new page whether it should
 // automatically be translated.
 // This auto-translate behavior is the expected behavior when:
 // - user is on page in language A that they had translated to language B.
 // - user clicks a link in that page that takes them to a page also in language
 //   A.
 
 class LanguageState {
  public:
   explicit LanguageState(NavigationController* nav_controller);
-  ~LanguageState();
+  virtual ~LanguageState();
 
   // Should be called when the page did a new navigation (whether it is a main
   // frame or sub-frame navigation).
   void DidNavigate(const NavigationController::LoadCommittedDetails& details);
 
   // Should be called when the language of the page has been determined.
   // |page_translatable| when false indicates that the browser should not offer
   // to translate the page.
   void LanguageDetermined(const std::string& page_language,
                           bool page_translatable);
 
   // Returns the language the current page should be translated to, based on the
   // previous page languages and the transition.  This should be called after
   // the language page has been determined.
   // Returns an empty string if the page should not be auto-translated.
   std::string AutoTranslateTo() const;
 
   // Returns true if the current page in the associated tab has been translated.
   bool IsPageTranslated() const { return original_lang_ != current_lang_; }
 
-  const std::string& original_language() const { return original_lang_; }
+  virtual const std::string& original_language() const {
+    return original_lang_;
+  }
 
   void set_current_language(const std::string& language) {
     current_lang_ = language;
   }
-  const std::string& current_language() const { return current_lang_; }
+  virtual const std::string& current_language() const { return current_lang_; }
 
   bool page_translatable() const { return page_translatable_; }
 
   // Whether the page is currently in the process of being translated.
   bool translation_pending() const { return translation_pending_; }
   void set_translation_pending(bool value) { translation_pending_ = value; }
 
   // Whether the user has already declined to translate the page.
   bool translation_declined() const { return translation_declined_; }
   void set_translation_declined(bool value) { translation_declined_ = value; }
@@ skipping 38 matching lines @@
   bool translation_declined_;
 
   // Whether the current navigation is a fragment navigation (in page).
   bool in_page_navigation_;
 
   DISALLOW_COPY_AND_ASSIGN(LanguageState);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_LANGUAGE_STATE_H_