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-rw-r--r--layout/xul/nsMenuParent.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/layout/xul/nsMenuParent.h b/layout/xul/nsMenuParent.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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