diff options
Diffstat (limited to 'chrome/views/menu_button.h')
-rw-r--r-- | chrome/views/menu_button.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/chrome/views/menu_button.h b/chrome/views/menu_button.h new file mode 100644 index 0000000..42f4a255 --- /dev/null +++ b/chrome/views/menu_button.h @@ -0,0 +1,122 @@ +// Copyright 2008, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#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 ChromeViews { + +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. + void GetPreferredSize(CSize* result); + virtual void Paint(ChromeCanvas* canvas, bool for_drag); + + // These methods are overriden to implement a simple push button + // behavior + virtual bool OnMousePressed(const ChromeViews::MouseEvent& e); + void OnMouseReleased(const ChromeViews::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 + +#endif // CHROME_VIEWS_MENU_BUTTON_H__ |