blob: de6f973dc36429e5b024015395f700976d7c075f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_VIEWS_MENU_BUTTON_H__
#define CHROME_VIEWS_MENU_BUTTON_H__
#include <windows.h>
#include "chrome/common/gfx/chrome_font.h"
#include "chrome/views/background.h"
#include "chrome/views/text_button.h"
#include "base/time.h"
namespace views {
class MouseEvent;
class ViewMenuDelegate;
////////////////////////////////////////////////////////////////////////////////
//
// MenuButton
//
// A button that shows a menu when the left mouse button is pushed
//
////////////////////////////////////////////////////////////////////////////////
class MenuButton : public TextButton {
public:
//
// Create a Button
MenuButton(const std::wstring& text,
ViewMenuDelegate* menu_delegate,
bool show_menu_marker);
virtual ~MenuButton();
// Activate the button (called when the button is pressed).
virtual bool Activate();
// Overridden to take into account the potential use of a drop marker.
virtual gfx::Size GetPreferredSize();
virtual void Paint(ChromeCanvas* canvas, bool for_drag);
// These methods are overriden to implement a simple push button
// behavior
virtual bool OnMousePressed(const MouseEvent& e);
void OnMouseReleased(const MouseEvent& e, bool canceled);
virtual bool OnKeyReleased(const KeyEvent& e);
virtual void OnMouseExited(const MouseEvent& event);
// Returns the MSAA default action of the current view. The string returned
// describes the default action that will occur when executing
// IAccessible::DoDefaultAction.
bool GetAccessibleDefaultAction(std::wstring* action);
// Returns the MSAA role of the current view. The role is what assistive
// technologies (ATs) use to determine what behavior to expect from a given
// control.
bool GetAccessibleRole(VARIANT* role);
// Returns the MSAA state of the current view. Sets the input VARIANT
// appropriately, and returns true if a change was performed successfully.
// Overriden from View.
virtual bool GetAccessibleState(VARIANT* state);
protected:
// true if the menu is currently visible.
bool menu_visible_;
private:
// Compute the maximum X coordinate for the current screen. MenuButtons
// use this to make sure a menu is never shown off screen.
int GetMaximumScreenXCoordinate();
DISALLOW_EVIL_CONSTRUCTORS(MenuButton);
// We use a time object in order to keep track of when the menu was closed.
// The time is used for simulating menu behavior for the menu button; that
// is, if the menu is shown and the button is pressed, we need to close the
// menu. There is no clean way to get the second click event because the
// menu is displayed using a modal loop and, unlike regular menus in Windows,
// the button is not part of the displayed menu.
Time menu_closed_time_;
// The associated menu's resource identifier.
ViewMenuDelegate* menu_delegate_;
// Whether or not we're showing a drop marker.
bool show_menu_marker_;
friend class TextButtonBackground;
};
} // namespace views
#endif // CHROME_VIEWS_MENU_BUTTON_H__
|
