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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_WM_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
6 #define ASH_WM_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
7 
8 #include "ash/ash_export.h"
9 #include "ash/wm/caption_buttons/alternate_frame_size_button_delegate.h"
10 #include "ui/gfx/image/image_skia.h"
11 #include "ui/views/controls/button/button.h"
12 #include "ui/views/view.h"
13 
14 namespace views {
15 class Widget;
16 }
17 
18 namespace ash {
19 class FrameCaptionButton;
20 class FrameMaximizeButton;
21 
22 // Container view for the frame caption buttons. It performs the appropriate
23 // action when a caption button is clicked.
24 class ASH_EXPORT FrameCaptionButtonContainerView
25     : public views::View,
26       public views::ButtonListener,
27       public AlternateFrameSizeButtonDelegate {
28  public:
29   static const char kViewClassName[];
30 
31   // Whether the frame can be minimized (either via the maximize/restore button
32   // or via a dedicated button).
33   enum MinimizeAllowed {
34     MINIMIZE_ALLOWED,
35     MINIMIZE_DISALLOWED
36   };
37   enum HeaderStyle {
38     // Default.
39     HEADER_STYLE_SHORT,
40 
41     // Restored tabbed browser windows.
42     HEADER_STYLE_TALL
43   };
44 
45   // |frame| is the views::Widget that the caption buttons act on.
46   // |minimize_allowed| indicates whether the frame can be minimized (either via
47   // the maximize/restore button or via a dedicated button).
48   FrameCaptionButtonContainerView(views::Widget* frame,
49                                   MinimizeAllowed minimize_allowed);
50   virtual ~FrameCaptionButtonContainerView();
51 
52   // For testing.
53   class TestApi {
54    public:
TestApi(FrameCaptionButtonContainerView * container_view)55     explicit TestApi(FrameCaptionButtonContainerView* container_view)
56         : container_view_(container_view) {
57     }
58 
minimize_button()59     FrameCaptionButton* minimize_button() const {
60       return container_view_->minimize_button_;
61     }
62 
size_button()63     FrameCaptionButton* size_button() const {
64       return container_view_->size_button_;
65     }
66 
close_button()67     FrameCaptionButton* close_button() const {
68       return container_view_->close_button_;
69     }
70 
71    private:
72     FrameCaptionButtonContainerView* container_view_;
73 
74     DISALLOW_COPY_AND_ASSIGN(TestApi);
75   };
76 
77   // Returns the size button if using the old caption button style, returns NULL
78   // otherwise.
79   FrameMaximizeButton* GetOldStyleSizeButton();
80 
81   // Tell the window controls to reset themselves to the normal state.
82   void ResetWindowControls();
83 
84   // Determines the window HT* code for the caption button at |point|. Returns
85   // HTNOWHERE if |point| is not over any of the caption buttons. |point| must
86   // be in the coordinates of the FrameCaptionButtonContainerView.
87   int NonClientHitTest(const gfx::Point& point) const;
88 
89   // Sets the header style.
set_header_style(HeaderStyle header_style)90   void set_header_style(HeaderStyle header_style) {
91     header_style_ = header_style;
92   }
93 
94   // views::View overrides:
95   virtual gfx::Size GetPreferredSize() OVERRIDE;
96   virtual void Layout() OVERRIDE;
97   virtual const char* GetClassName() const OVERRIDE;
98   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
99 
100  private:
101   friend class FrameCaptionButtonContainerViewTest;
102 
103   // views::ButtonListener override:
104   virtual void ButtonPressed(views::Button* sender,
105                              const ui::Event& event) OVERRIDE;
106 
107   // AlternateFrameSizeButton::Delegate overrides:
108   virtual bool IsMinimizeButtonVisible() const OVERRIDE;
109   virtual void SetButtonsToNormal(Animate animate) OVERRIDE;
110   virtual void SetButtonIcons(CaptionButtonIcon minimize_button_icon,
111                               CaptionButtonIcon close_button_icon,
112                               Animate animate) OVERRIDE;
113   virtual const FrameCaptionButton* PressButtonAt(
114       const gfx::Point& position_in_screen,
115       const gfx::Insets& pressed_hittest_outer_insets) const OVERRIDE;
116 
117   // The widget that the buttons act on.
118   views::Widget* frame_;
119 
120   // The close button separator.
121   gfx::ImageSkia button_separator_;
122 
123   HeaderStyle header_style_;
124 
125   // The buttons. In the normal button style, at most one of |minimize_button_|
126   // and |size_button_| is visible.
127   FrameCaptionButton* minimize_button_;
128   FrameCaptionButton* size_button_;
129   FrameCaptionButton* close_button_;
130 
131   DISALLOW_COPY_AND_ASSIGN(FrameCaptionButtonContainerView);
132 };
133 
134 }  // namesapace ash
135 
136 #endif  // ASH_WM_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
137