Refactored the translate infobars.

chrome/browser/views/infobars/translate_infobar_base.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_VIEWS_INFOBARS_TRANSLATE_INFOBAR_BASE_H_
+#define CHROME_BROWSER_VIEWS_INFOBARS_TRANSLATE_INFOBAR_BASE_H_
+
+#include "chrome/browser/translate/translate_infobar_view.h"
+#include "chrome/browser/views/infobars/infobars.h"
+
+class TranslateInfoBarDelegate2;
+
+namespace views {
+class MenuButton;
+class ViewMenuDelegate;
+}
+
+// This class contains some of the base functionality that translate infobars
+// use.
+class TranslateInfoBarBase : public TranslateInfoBarView,
+                             public InfoBar {
+ public:
+  explicit TranslateInfoBarBase(TranslateInfoBarDelegate2* delegate);
+  virtual ~TranslateInfoBarBase();
+
+  // TranslateInfoBarView implementation:
+  virtual void OriginalLanguageChanged() {}
+  virtual void TargetLanguageChanged() {}
+
+  // Overridden from views::View:
+  virtual void Layout();
+  virtual void PaintBackground(gfx::Canvas* canvas);
+
+ protected:
+  // Overridden from AnimationDelegate:
+  virtual void AnimationProgressed(const Animation* animation);
+
+  // Creates a label with the appropriate font and color for the translate
+  // infobars.
+  views::Label* CreateLabel(const string16& text);
+
+  // Creates a menu-button with a custom appearance for the translate infobars.
+  views::MenuButton* CreateMenuButton(const string16& text,
+                                      bool normal_has_border,
+                                      views::ViewMenuDelegate* menu_delegate);
+
+  // Returns the location at which the menu triggered by |menu_button| should be
+  // positioned.
+  gfx::Point DetermineMenuPosition(views::MenuButton* menu_button);
+
+  // Convenience to retrieve the TranslateInfoBarDelegate2 for this infobar.
+  TranslateInfoBarDelegate2* GetDelegate() const;
+
+  // The translate icon.
+  views::ImageView* icon_;
+
+  InfoBarBackground normal_background_;
+  InfoBarBackground error_background_;
+  scoped_ptr<SlideAnimation> background_color_animation_;
+
+ private:
+  // Returns the background that should be displayed when not animating.
+  const InfoBarBackground& GetBackground() const;
+
+  // Paints |background| to |canvas| with the opacity level based on
+  // |animation_value|.
+  void FadeBackground(gfx::Canvas* canvas,
+                      double animation_value,
+                      const InfoBarBackground& background);
+
+  DISALLOW_COPY_AND_ASSIGN(TranslateInfoBarBase);
+};
+
+#endif  // CHROME_BROWSER_VIEWS_INFOBARS_TRANSLATE_INFOBAR_BASE_H_
+
+