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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsMenuParent_h___
#define nsMenuParent_h___
class nsMenuFrame;
/*
* nsMenuParent is an interface implemented by nsMenuBarFrame and nsMenuPopupFrame
* as both serve as parent frames to nsMenuFrame.
*
* Don't implement this interface on other classes unless you also fix up references,
* as this interface is directly cast to and from nsMenuBarFrame and nsMenuPopupFrame.
*/
class nsMenuParent {
public:
// returns the menu frame of the currently active item within the menu
virtual nsMenuFrame *GetCurrentMenuItem() = 0;
// sets the currently active menu frame.
NS_IMETHOD SetCurrentMenuItem(nsMenuFrame* aMenuItem) = 0;
// indicate that the current menu frame is being destroyed, so clear the
// current menu item
virtual void CurrentMenuIsBeingDestroyed() = 0;
// deselects the current item and closes its popup if any, then selects the
// new item aMenuItem. For a menubar, if another menu is already open, the
// new menu aMenuItem is opened. In this case, if aSelectFirstItem is true,
// select the first item in it. For menupopups, the menu is not opened and
// the aSelectFirstItem argument is not used. The aFromKey argument indicates
// that the keyboard was used to navigate to the new menu item.
NS_IMETHOD ChangeMenuItem(nsMenuFrame* aMenuItem,
bool aSelectFirstItem,
bool aFromKey) = 0;
// returns true if the menupopup is open. For menubars, returns false.
virtual bool IsOpen() = 0;
// returns true if the menubar is currently active. For menupopups, returns false.
virtual bool IsActive() = 0;
// returns true if this is a menubar. If false, it is a popup
virtual bool IsMenuBar() = 0;
// returns true if this is a menu, which has a tag of menupopup or popup.
// Otherwise, this returns false
virtual bool IsMenu() = 0;
// returns true if this is a context menu
virtual bool IsContextMenu() = 0;
// indicate that the menubar should become active or inactive
NS_IMETHOD SetActive(bool aActiveFlag) = 0;
// notify that the menu has been closed and any active state should be
// cleared. This should return true if the menu should be deselected
// by the caller.
virtual bool MenuClosed() = 0;
// Lock this menu and its parents until they're closed or unlocked.
// A menu being "locked" means that all events inside it that would change the
// selected menu item should be ignored.
// This is used when closing the popup is delayed because of a blink or fade
// animation.
virtual void LockMenuUntilClosed(bool aLock) = 0;
virtual bool IsMenuLocked() = 0;
};
#endif
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