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      1 // Copyright 2013 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_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_
      6 #define CHROME_BROWSER_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_
      7 
      8 #include "chrome/browser/tab_contents/language_state_observer.h"
      9 
     10 #include "base/basictypes.h"
     11 #include "base/compiler_specific.h"
     12 
     13 class Browser;
     14 
     15 // Implementation of LanguageStateObserver for Browser. This observes the state
     16 // if Translate is enabled or not, and updates toolbar in response to changes in
     17 // state of translate.
     18 class BrowserLanguageStateObserver : public LanguageStateObserver {
     19  public:
     20   explicit BrowserLanguageStateObserver(Browser* browser);
     21 
     22   virtual ~BrowserLanguageStateObserver();
     23 
     24   // Overridden from LanguageState::Observer
     25   virtual void OnIsPageTranslatedChanged(content::WebContents* source) OVERRIDE;
     26   virtual void OnTranslateEnabledChanged(content::WebContents* source) OVERRIDE;
     27 
     28  private:
     29   Browser* browser_;
     30 
     31   DISALLOW_COPY_AND_ASSIGN(BrowserLanguageStateObserver);
     32 };
     33 
     34 #endif  // CHROME_BROWSER_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_
     35