Translate: New Bubble UX (for the view toolkit)

chrome/browser/ui/browser_language_state_observer.h

+// Copyright 2013 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_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_
+#define CHROME_BROWSER_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_
+
+#include "chrome/browser/tab_contents/language_state_observer.h"
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+
+class Browser;
+
+// The implementation of LanguageStateObserver for Browser. This observes the
+// state if Translate is enabled or not, and updates the toolbar.
+class BrowserLanguageStateObserver : public LanguageStateObserver {
+ public:
+  explicit BrowserLanguageStateObserver(Browser* browser);
+
+  virtual ~BrowserLanguageStateObserver();
+
+  // Overridden from LanguageState::Observer
+  virtual void OnTranslateEnabledChanged(content::WebContents* source) OVERRIDE;
+
+ private:
+  Browser* browser_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserLanguageStateObserver);
+};
+
+#endif  // CHROME_BROWSER_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_