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      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_FRAME_CAPTION_BUTTONS_FRAME_SIZE_BUTTON_DELEGATE_H_
      6 #define ASH_FRAME_CAPTION_BUTTONS_FRAME_SIZE_BUTTON_DELEGATE_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "ash/frame/caption_buttons/caption_button_types.h"
     10 
     11 namespace gfx {
     12 class Insets;
     13 class Point;
     14 class Vector2d;
     15 }
     16 
     17 namespace ash {
     18 class FrameCaptionButton;
     19 
     20 // Delegate interface for FrameSizeButton.
     21 class ASH_EXPORT FrameSizeButtonDelegate {
     22  public:
     23   enum Animate {
     24     ANIMATE_YES,
     25     ANIMATE_NO
     26   };
     27 
     28   // Returns whether the minimize button is visible.
     29   virtual bool IsMinimizeButtonVisible() const = 0;
     30 
     31   // Reset the caption button views::Button::ButtonState back to normal. If
     32   // |animate| is ANIMATE_YES, the buttons will crossfade back to their
     33   // original icons.
     34   virtual void SetButtonsToNormal(Animate animate) = 0;
     35 
     36   // Sets the minimize and close button icons. The buttons will crossfade to
     37   // their new icons if |animate| is ANIMATE_YES.
     38   virtual void SetButtonIcons(CaptionButtonIcon minimize_button_icon,
     39                               CaptionButtonIcon close_button_icon,
     40                               Animate animate) = 0;
     41 
     42   // Returns the button closest to |position_in_screen|.
     43   virtual const FrameCaptionButton* GetButtonClosestTo(
     44       const gfx::Point& position_in_screen) const = 0;
     45 
     46   // Sets |to_hover| and |to_pressed| to STATE_HOVERED and STATE_PRESSED
     47   // respectively. All other buttons are to set to STATE_NORMAL.
     48   virtual void SetHoveredAndPressedButtons(
     49       const FrameCaptionButton* to_hover,
     50       const FrameCaptionButton* to_press) = 0;
     51 
     52  protected:
     53   virtual ~FrameSizeButtonDelegate() {}
     54 };
     55 
     56 }  // namespace ash
     57 
     58 #endif  // ASH_FRAME_CAPTION_BUTTONS_FRAME_SIZE_BUTTON_DELEGATE_H_
     59