зеркало из https://github.com/mozilla/gecko-dev.git
71 строка
2.9 KiB
C++
71 строка
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsMenuParent_h___
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#define nsMenuParent_h___
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class nsMenuFrame;
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/*
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* nsMenuParent is an interface implemented by nsMenuBarFrame and nsMenuPopupFrame
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* as both serve as parent frames to nsMenuFrame.
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*
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* Don't implement this interface on other classes unless you also fix up references,
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* as this interface is directly cast to and from nsMenuBarFrame and nsMenuPopupFrame.
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*/
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class nsMenuParent {
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public:
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// returns the menu frame of the currently active item within the menu
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virtual nsMenuFrame *GetCurrentMenuItem() = 0;
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// sets the currently active menu frame.
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NS_IMETHOD SetCurrentMenuItem(nsMenuFrame* aMenuItem) = 0;
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// indicate that the current menu frame is being destroyed, so clear the
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// current menu item
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virtual void CurrentMenuIsBeingDestroyed() = 0;
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// deselects the current item and closes its popup if any, then selects the
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// new item aMenuItem. For a menubar, if another menu is already open, the
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// new menu aMenuItem is opened. In this case, if aSelectFirstItem is true,
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// select the first item in it. For menupopups, the menu is not opened and
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// the aSelectFirstItem argument is not used. The aFromKey argument indicates
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// that the keyboard was used to navigate to the new menu item.
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NS_IMETHOD ChangeMenuItem(nsMenuFrame* aMenuItem,
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bool aSelectFirstItem,
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bool aFromKey) = 0;
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// returns true if the menupopup is open. For menubars, returns false.
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virtual bool IsOpen() = 0;
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// returns true if the menubar is currently active. For menupopups, returns false.
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virtual bool IsActive() = 0;
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// returns true if this is a menubar. If false, it is a popup
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virtual bool IsMenuBar() = 0;
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// returns true if this is a menu, which has a tag of menupopup or popup.
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// Otherwise, this returns false
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virtual bool IsMenu() = 0;
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// returns true if this is a context menu
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virtual bool IsContextMenu() = 0;
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// indicate that the menubar should become active or inactive
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NS_IMETHOD SetActive(bool aActiveFlag) = 0;
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// notify that the menu has been closed and any active state should be
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// cleared. This should return true if the menu should be deselected
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// by the caller.
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virtual bool MenuClosed() = 0;
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// Lock this menu and its parents until they're closed or unlocked.
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// A menu being "locked" means that all events inside it that would change the
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// selected menu item should be ignored.
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// This is used when closing the popup is delayed because of a blink or fade
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// animation.
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virtual void LockMenuUntilClosed(bool aLock) = 0;
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virtual bool IsMenuLocked() = 0;
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};
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#endif
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