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      1 // Copyright (c) 2011 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_VIEWS_INFOBARS_TRANSLATE_INFOBAR_BASE_H_
      6 #define CHROME_BROWSER_UI_VIEWS_INFOBARS_TRANSLATE_INFOBAR_BASE_H_
      7 #pragma once
      8 
      9 #include "chrome/browser/translate/languages_menu_model.h"
     10 #include "chrome/browser/translate/translate_infobar_view.h"
     11 #include "chrome/browser/ui/views/infobars/infobar_background.h"
     12 #include "chrome/browser/ui/views/infobars/infobar_view.h"
     13 
     14 class TranslateInfoBarDelegate;
     15 
     16 namespace views {
     17 class MenuButton;
     18 }
     19 
     20 // This class contains some of the base functionality that translate infobars
     21 // use.
     22 class TranslateInfoBarBase : public TranslateInfoBarView,
     23                              public InfoBarView {
     24  public:
     25   explicit TranslateInfoBarBase(TranslateInfoBarDelegate* delegate);
     26   virtual ~TranslateInfoBarBase();
     27 
     28  protected:
     29   static const int kButtonInLabelSpacing;
     30 
     31   // InfoBarView:
     32   virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
     33 
     34   // Sets the text of the provided language menu button to reflect the current
     35   // value from the delegate.
     36   void UpdateLanguageButtonText(views::MenuButton* button,
     37                                 LanguagesMenuModel::LanguageType language);
     38 
     39   // Convenience to retrieve the TranslateInfoBarDelegate for this infobar.
     40   TranslateInfoBarDelegate* GetDelegate();
     41 
     42  private:
     43   // InfoBarView:
     44   virtual void OnPaintBackground(gfx::Canvas* canvas);
     45   virtual void AnimationProgressed(const ui::Animation* animation);
     46 
     47   // Returns the background that should be displayed when not animating.
     48   const views::Background& GetBackground();
     49 
     50   // Paints |background| to |canvas| with the opacity level based on
     51   // |animation_value|.
     52   void FadeBackground(gfx::Canvas* canvas,
     53                       double animation_value,
     54                       const views::Background& background);
     55 
     56   InfoBarBackground error_background_;
     57   scoped_ptr<ui::SlideAnimation> background_color_animation_;
     58 
     59   DISALLOW_COPY_AND_ASSIGN(TranslateInfoBarBase);
     60 };
     61 
     62 #endif  // CHROME_BROWSER_UI_VIEWS_INFOBARS_TRANSLATE_INFOBAR_BASE_H_
     63