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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 ASH_SYSTEM_TRAY_HOVER_HIGHLIGHT_VIEW_H_
      6 #define ASH_SYSTEM_TRAY_HOVER_HIGHLIGHT_VIEW_H_
      7 
      8 #include "ash/system/tray/actionable_view.h"
      9 #include "base/basictypes.h"
     10 #include "base/compiler_specific.h"
     11 #include "ui/gfx/font.h"
     12 #include "ui/gfx/text_constants.h"
     13 
     14 namespace views {
     15 class Label;
     16 }
     17 
     18 namespace ash {
     19 class ViewClickListener;
     20 
     21 // A view that changes background color on hover, and triggers a callback in the
     22 // associated ViewClickListener on click. The view can also be forced to
     23 // maintain a fixed height.
     24 class HoverHighlightView : public ActionableView {
     25  public:
     26   explicit HoverHighlightView(ViewClickListener* listener);
     27   virtual ~HoverHighlightView();
     28 
     29   // Convenience function for adding an icon and a label.  This also sets the
     30   // accessible name.
     31   void AddIconAndLabel(const gfx::ImageSkia& image,
     32                        const base::string16& text,
     33                        gfx::Font::FontStyle style);
     34 
     35   // Convenience function for adding a label with padding on the left for a
     36   // blank icon.  This also sets the accessible name.
     37   // Returns label after parenting it.
     38   views::Label* AddLabel(const base::string16& text,
     39                          gfx::HorizontalAlignment alignment,
     40                          gfx::Font::FontStyle style);
     41 
     42   // Convenience function for adding an optional check and a label.  In the
     43   // absence of a check, padding is added to align with checked items.
     44   // Returns label after parenting it.
     45   views::Label* AddCheckableLabel(const base::string16& text,
     46                                   gfx::Font::FontStyle style,
     47                                   bool checked);
     48 
     49   // Allows view to expand its height.
     50   // Size of unexapandable view is fixed and equals to kTrayPopupItemHeight.
     51   void SetExpandable(bool expandable);
     52 
     53   void set_highlight_color(SkColor color) { highlight_color_ = color; }
     54   void set_default_color(SkColor color) { default_color_ = color; }
     55   void set_text_highlight_color(SkColor c) { text_highlight_color_ = c; }
     56   void set_text_default_color(SkColor color) { text_default_color_ = color; }
     57 
     58   views::Label* text_label() { return text_label_; }
     59 
     60   bool hover() const { return hover_; }
     61 
     62  protected:
     63   // Overridden from views::View.
     64   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
     65 
     66  private:
     67   // Overridden from ActionableView:
     68   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
     69 
     70   // Overridden from views::View.
     71   virtual gfx::Size GetPreferredSize() const OVERRIDE;
     72   virtual int GetHeightForWidth(int width) const OVERRIDE;
     73   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
     74   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
     75   virtual void OnEnabledChanged() OVERRIDE;
     76   virtual void OnPaintBackground(gfx::Canvas* canvas) OVERRIDE;
     77   virtual void OnFocus() OVERRIDE;
     78 
     79   ViewClickListener* listener_;
     80   views::Label* text_label_;
     81   SkColor highlight_color_;
     82   SkColor default_color_;
     83   SkColor text_highlight_color_;
     84   SkColor text_default_color_;
     85   bool hover_;
     86   bool expandable_;
     87   bool checkable_;
     88   bool checked_;
     89 
     90   DISALLOW_COPY_AND_ASSIGN(HoverHighlightView);
     91 };
     92 
     93 }  // namespace ash
     94 
     95 #endif  // ASH_SYSTEM_TRAY_HOVER_HIGHLIGHT_VIEW_H_
     96