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Diffstat (limited to 'chrome/views/controls/button/menu_button.h')
-rw-r--r-- | chrome/views/controls/button/menu_button.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/chrome/views/controls/button/menu_button.h b/chrome/views/controls/button/menu_button.h new file mode 100644 index 0000000..458853e --- /dev/null +++ b/chrome/views/controls/button/menu_button.h @@ -0,0 +1,98 @@ +// 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_CONTROLS_BUTTON_MENU_BUTTON_H_ +#define CHROME_VIEWS_CONTROLS_BUTTON_MENU_BUTTON_H_ + +#include <windows.h> + +#include "chrome/common/gfx/chrome_font.h" +#include "chrome/views/background.h" +#include "chrome/views/controls/button/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(ButtonListener* listener, + 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. + base::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_CONTROLS_BUTTON_MENU_BUTTON_H_ |