ash/system/user/button_from_view.h

   1 // Copyright 2014 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_USER_BUTTON_FROM_VIEW_H_
   6 #define ASH_SYSTEM_USER_BUTTON_FROM_VIEW_H_
   7
   8 #include "base/macros.h"
   9 #include "ui/gfx/geometry/insets.h"
  10 #include "ui/views/controls/button/custom_button.h"
  11
  12 namespace ash {
  13 namespace tray {
  14
  15 // This view is used to wrap it's content and transform it into button.
  16 class ButtonFromView : public views::CustomButton {
  17  public:
  18   // The |content| is the content which is shown within the button. The
  19   // |button_listener| will be informed - if provided - when a button was
  20   // pressed. If |highlight_on_hover| is set to true, the button will be
  21   // highlighted upon hover and show the accessibility caret.
  22   // The |tab_frame_inset| will be used to inset the blue tab frame inside the
  23   // button.
  24   // An accessible label gets computed based upon descendant views of this view.
  25   ButtonFromView(views::View* content,
  26                  views::ButtonListener* listener,
  27                  bool highlight_on_hover,
  28                  const gfx::Insets& tab_frame_inset);
  29   ~ButtonFromView() override;
  30
  31   // Called when the border should remain even in the non highlighted state.
  32   void ForceBorderVisible(bool show);
  33
  34   // Overridden from views::View
  35   void OnMouseEntered(const ui::MouseEvent& event) override;
  36   void OnMouseExited(const ui::MouseEvent& event) override;
  37   void OnPaint(gfx::Canvas* canvas) override;
  38   void OnFocus() override;
  39   void OnBlur() override;
  40   void GetAccessibleState(ui::AXViewState* state) override;
  41
  42   // Check if the item is hovered.
  43   bool is_hovered_for_test() { return button_hovered_; }
  44
  45  private:
  46   // Change the hover/active state of the "button" when the status changes.
  47   void ShowActive();
  48
  49   // Content of button.
  50   views::View* content_;
  51
  52   // Whether button should be highligthed on hover.
  53   bool highlight_on_hover_;
  54
  55   // True if button is hovered.
  56   bool button_hovered_;
  57
  58   // True if the border should be always visible.
  59   bool show_border_;
  60
  61   // The insets which get used for the drawn accessibility (tab) frame.
  62   gfx::Insets tab_frame_inset_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(ButtonFromView);
  65 };
  66
  67 }  // namespace tray
  68 }  // namespace ash
  69
  70 #endif  // ASH_SYSTEM_USER_BUTTON_FROM_VIEW_H_