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gecko/layout/xul/base/public/nsXULPopupManager.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Neil Deakin
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* The XUL Popup Manager keeps track of all open popups.
*/
#ifndef nsXULPopupManager_h__
#define nsXULPopupManager_h__
#include "nsIContent.h"
#include "nsIWidget.h"
#include "nsIRollupListener.h"
#include "nsIMenuRollup.h"
#include "nsIDOMKeyListener.h"
#include "nsPoint.h"
#include "nsCOMPtr.h"
#include "nsTArray.h"
#include "nsITimer.h"
#include "nsThreadUtils.h"
/**
* There are two types that are used:
* - dismissable popups such as menus, which should close up when there is a
* click outside the popup. In this situation, the entire chain of menus
* above should also be closed.
* - panels, which stay open until a request is made to close them. This
* type is used by tooltips.
* XXXndeakin note that panels don't work too well currently due to widget
* changes needed to handle activation events properly.
*
* When a new popup is opened, it is appended to the popup chain, stored in a
* linked list in mCurrentMenu for dismissable menus or mPanels for panels.
* Popups are stored in this list linked from newest to oldest. When a click
* occurs outside one of the open dismissable popups, the chain is closed by
* calling Rollup.
*/
class nsIPresShell;
class nsMenuFrame;
class nsMenuPopupFrame;
class nsMenuBarFrame;
class nsIMenuParent;
class nsIDOMKeyEvent;
enum nsPopupType {
ePopupTypePanel,
ePopupTypeMenu,
ePopupTypeTooltip,
ePopupTypeAny = 0xF000 // used only to pass to GetTopPopup
};
// when a menu command is executed, the closemenu attribute may be used
// to define how the menu should be closed up
enum CloseMenuMode {
CloseMenuMode_Auto, // close up the chain of menus, default value
CloseMenuMode_None, // don't close up any menus
CloseMenuMode_Single // close up only the menu the command is inside
};
/**
* nsNavigationDirection: an enum expressing navigation through the menus in
* terms which are independent of the directionality of the chrome. The
* terminology, derived from XSL-FO and CSS3 (e.g.
* http://www.w3.org/TR/css3-text/#TextLayout), is BASE (Before, After, Start,
* End), with the addition of First and Last (mapped to Home and End
* respectively).
*
* In languages such as English where the inline progression is left-to-right
* and the block progression is top-to-bottom (lr-tb), these terms will map out
* as in the following diagram
*
* --- inline progression --->
*
* First |
* ... |
* Before |
* +--------+ block
* Start | | End progression
* +--------+ |
* After |
* ... |
* Last V
*
*/
enum nsNavigationDirection {
eNavigationDirection_Last,
eNavigationDirection_First,
eNavigationDirection_Start,
eNavigationDirection_Before,
eNavigationDirection_End,
eNavigationDirection_After
};
#define NS_DIRECTION_IS_INLINE(dir) (dir == eNavigationDirection_Start || \
dir == eNavigationDirection_End)
#define NS_DIRECTION_IS_BLOCK(dir) (dir == eNavigationDirection_Before || \
dir == eNavigationDirection_After)
#define NS_DIRECTION_IS_BLOCK_TO_EDGE(dir) (dir == eNavigationDirection_First || \
dir == eNavigationDirection_Last)
/**
* DirectionFromKeyCode_lr_tb: an array that maps keycodes to values of
* nsNavigationDirection for left-to-right and top-to-bottom flow orientation
* This is defined in nsXULPopupManager.cpp.
*/
extern nsNavigationDirection DirectionFromKeyCode_lr_tb [6];
/**
* DirectionFromKeyCode_rl_tb: an array that maps keycodes to values of
* nsNavigationDirection for right-to-left and top-to-bottom flow orientation
* This is defined in nsXULPopupManager.cpp.
*/
extern nsNavigationDirection DirectionFromKeyCode_rl_tb [6];
#define NS_DIRECTION_FROM_KEY_CODE(frame, direction, keycode) \
NS_ASSERTION(NS_VK_HOME == NS_VK_END + 1, "Broken ordering"); \
NS_ASSERTION(NS_VK_LEFT == NS_VK_END + 2, "Broken ordering"); \
NS_ASSERTION(NS_VK_UP == NS_VK_END + 3, "Broken ordering"); \
NS_ASSERTION(NS_VK_RIGHT == NS_VK_END + 4, "Broken ordering"); \
NS_ASSERTION(NS_VK_DOWN == NS_VK_END + 5, "Broken ordering"); \
NS_ASSERTION(keycode >= NS_VK_END && keycode <= NS_VK_DOWN, \
"Illegal key code"); \
const nsStyleVisibility* vis = frame->GetStyleVisibility(); \
if (vis->mDirection == NS_STYLE_DIRECTION_RTL) \
direction = DirectionFromKeyCode_rl_tb[keycode - NS_VK_END]; \
else \
direction = DirectionFromKeyCode_lr_tb[keycode - NS_VK_END];
// nsMenuChainItem holds info about an open popup. Items are stored in a
// doubly linked list. Note that the linked list is stored beginning from
// the lowest child in a chain of menus, as this is the active submenu.
class nsMenuChainItem
{
private:
nsMenuPopupFrame* mFrame; // the popup frame
nsPopupType mPopupType; // the popup type of the frame
PRPackedBool mIsContext; // true for context menus
PRPackedBool mOnMenuBar; // true if the menu is on a menu bar
PRPackedBool mIgnoreKeys; // true if keyboard listeners should not be used
nsMenuChainItem* mParent;
nsMenuChainItem* mChild;
public:
nsMenuChainItem(nsMenuPopupFrame* aFrame, PRBool aIsContext, nsPopupType aPopupType)
: mFrame(aFrame),
mPopupType(aPopupType),
mIsContext(aIsContext),
mOnMenuBar(PR_FALSE),
mIgnoreKeys(aPopupType != ePopupTypeMenu), // always ignore keys on non-menus
mParent(nsnull),
mChild(nsnull)
{
NS_ASSERTION(aFrame, "null frame passed to nsMenuChainItem constructor");
MOZ_COUNT_CTOR(nsMenuChainItem);
}
~nsMenuChainItem()
{
MOZ_COUNT_DTOR(nsMenuChainItem);
}
nsIContent* Content();
nsMenuPopupFrame* Frame() { return mFrame; }
nsPopupType PopupType() { return mPopupType; }
PRBool IsMenu() { return mPopupType == ePopupTypeMenu; }
PRBool IsContextMenu() { return mIsContext; }
PRBool IgnoreKeys() { return mIgnoreKeys; }
PRBool IsOnMenuBar() { return mOnMenuBar; }
void SetIgnoreKeys(PRBool aIgnoreKeys) { mIgnoreKeys = aIgnoreKeys; }
void SetOnMenuBar(PRBool aOnMenuBar) { mOnMenuBar = aOnMenuBar; }
nsMenuChainItem* GetParent() { return mParent; }
nsMenuChainItem* GetChild() { return mChild; }
// set the parent of this item to aParent, also changing the parent
// to have this as a child.
void SetParent(nsMenuChainItem* aParent);
// removes an item from the chain. The root pointer must be supplied in case
// the item is the first item in the chain in which case the pointer will be
// set to the next item, or null if there isn't another item. After detaching,
// this item will not have a parent or a child.
void Detach(nsMenuChainItem** aRoot);
};
// this class is used for dispatching popupshowing events asynchronously.
class nsXULPopupShowingEvent : public nsRunnable
{
public:
nsXULPopupShowingEvent(nsIContent *aPopup,
nsIContent *aMenu,
PRBool aIsContextMenu,
PRBool aSelectFirstItem)
: mPopup(aPopup),
mMenu(aMenu),
mIsContextMenu(aIsContextMenu),
mSelectFirstItem(aSelectFirstItem)
{
NS_ASSERTION(aPopup, "null popup supplied to nsXULPopupShowingEvent constructor");
NS_ASSERTION(aMenu, "null menu supplied to nsXULPopupShowingEvent constructor");
}
NS_IMETHOD Run();
private:
nsCOMPtr<nsIContent> mPopup;
nsCOMPtr<nsIContent> mMenu;
PRBool mIsContextMenu;
PRBool mSelectFirstItem;
};
// this class is used for dispatching popuphiding events asynchronously.
class nsXULPopupHidingEvent : public nsRunnable
{
public:
nsXULPopupHidingEvent(nsIContent *aPopup,
nsIContent* aNextPopup,
nsIContent* aLastPopup,
nsPopupType aPopupType,
PRBool aDeselectMenu)
: mPopup(aPopup),
mNextPopup(aNextPopup),
mLastPopup(aLastPopup),
mPopupType(aPopupType),
mDeselectMenu(aDeselectMenu)
{
NS_ASSERTION(aPopup, "null popup supplied to nsXULPopupHidingEvent constructor");
// aNextPopup and aLastPopup may be null
}
NS_IMETHOD Run();
private:
nsCOMPtr<nsIContent> mPopup;
nsCOMPtr<nsIContent> mNextPopup;
nsCOMPtr<nsIContent> mLastPopup;
nsPopupType mPopupType;
PRBool mDeselectMenu;
};
// this class is used for dispatching menu command events asynchronously.
class nsXULMenuCommandEvent : public nsRunnable
{
public:
nsXULMenuCommandEvent(nsIContent *aMenu,
PRBool aIsTrusted,
PRBool aShift,
PRBool aControl,
PRBool aAlt,
PRBool aMeta,
PRBool aUserInput,
CloseMenuMode aCloseMenuMode)
: mMenu(aMenu),
mIsTrusted(aIsTrusted),
mShift(aShift),
mControl(aControl),
mAlt(aAlt),
mMeta(aMeta),
mUserInput(aUserInput),
mCloseMenuMode(aCloseMenuMode)
{
NS_ASSERTION(aMenu, "null menu supplied to nsXULMenuCommandEvent constructor");
}
NS_IMETHOD Run();
private:
nsCOMPtr<nsIContent> mMenu;
PRBool mIsTrusted;
PRBool mShift;
PRBool mControl;
PRBool mAlt;
PRBool mMeta;
PRBool mUserInput;
CloseMenuMode mCloseMenuMode;
};
class nsXULPopupManager : public nsIDOMKeyListener,
public nsIMenuRollup,
public nsIRollupListener,
public nsITimerCallback
{
public:
friend class nsXULPopupShowingEvent;
friend class nsXULPopupHidingEvent;
friend class nsXULMenuCommandEvent;
NS_DECL_ISUPPORTS
NS_DECL_NSIROLLUPLISTENER
NS_DECL_NSIMENUROLLUP
NS_DECL_NSITIMERCALLBACK
static nsXULPopupManager* sInstance;
// initialize and shutdown methods called by nsLayoutStatics
static nsresult Init();
static void Shutdown();
// returns a weak reference to the popup manager instance, could return null
// if a popup manager could not be allocated
static nsXULPopupManager* GetInstance();
// get the frame for a content node aContent if the frame's type
// matches aFrameType. Otherwise, return null. If aShouldFlush is true,
// then the frames are flushed before retrieving the frame.
nsIFrame* GetFrameOfTypeForContent(nsIContent* aContent,
nsIAtom* aFrameType,
PRBool aShouldFlush);
// given a menu frame, find the prevous or next menu frame. If aPopup is
// true then navigate a menupopup, from one item on the menu to the previous
// or next one. This is used for cursor navigation between items in a popup
// menu. If aIsPopup is false, the navigation is on a menubar, so navigate
// between menus on the menubar. This is used for left/right cursor navigation.
//
// Items that not valid, such as non-menu or menuitem elements are skipped,
// and the next or previous item after that is checked.
//
// If aStart is null, the first valid item is retrieved for GetNextMenuItem
// or the last valid item for GetPreviousMenuItem is used.
//
// aParent - the parent menubar or menupopup
// aStart - the menu/menuitem to start navigation from. GetPreviousMenuItem
// returns the item before it, while GetNextMenuItem returns the
// next item.
// aIsPopup - true for menupopups, false for menubars
static nsMenuFrame* GetPreviousMenuItem(nsIFrame* aParent,
nsMenuFrame* aStart,
PRBool aIsPopup);
static nsMenuFrame* GetNextMenuItem(nsIFrame* aParent,
nsMenuFrame* aStart,
PRBool aIsPopup);
// returns true if the menu item aContent is a valid menuitem which may
// be navigated to. aIsPopup should be true for items on a popup, or false
// for items on a menubar.
static PRBool IsValidMenuItem(nsPresContext* aPresContext,
nsIContent* aContent,
PRBool aOnPopup);
// inform the popup manager that a menu bar has been activated or deactivated,
// either because one of its menus has opened or closed, or that the menubar
// has been focused such that its menus may be navigated with the keyboard.
// aActivate should be true when the menubar should be focused, and false
// when the active menu bar should be defocused. In the latter case, if
// aMenuBar isn't currently active, yet another menu bar is, that menu bar
// will remain active.
void SetActiveMenuBar(nsMenuBarFrame* aMenuBar, PRBool aActivate);
// retrieve the node and offset of the last mouse event used to open a
// context menu. This information is determined from the rangeParent and
// the rangeOffset of the event supplied from the last call to SetMouseLocation.
// This is used by the implementation of nsIDOMXULDocument::GetPopupRangeParent
// and nsIDOMXULDocument::GetPopupRangeOffset.
void GetMouseLocation(nsIDOMNode** aNode, PRInt32* aOffset);
// set the mouse event that was used to activate the next popup, specified by
// aPopup, to be opened.
void SetMouseLocation(nsIDOMEvent* aEvent, nsIContent* aPopup);
/**
* Open a <menu> given its content node. If aSelectFirstItem is
* set to true, the first item on the menu will automatically be
* selected. If aAsynchronous is true, the event will be dispatched
* asynchronously. This should be true when called from frame code.
*/
void ShowMenu(nsIContent *aMenu, PRBool aSelectFirstItem, PRBool aAsynchronous);
/**
* Open a popup, either anchored or unanchored. If aSelectFirstItem is
* true, then the first item in the menu is selected. The arguments are
* similar to those for nsIPopupBoxObject::OpenPopup.
*
* This fires the popupshowing event synchronously.
*/
void ShowPopup(nsIContent* aPopup,
nsIContent* aAnchorContent,
const nsAString& aPosition,
PRInt32 aXPos, PRInt32 aYPos,
PRBool aIsContextMenu,
PRBool aAttributesOverride,
PRBool aSelectFirstItem);
/**
* Open a popup at a specific screen position specified by aXPos and aYPos,
* measured in CSS pixels.
*
* This fires the popupshowing event synchronously.
*/
void ShowPopupAtScreen(nsIContent* aPopup,
PRInt32 aXPos, PRInt32 aYPos,
PRBool aIsContextMenu);
/**
* This method is provided only for compatibility with an older popup API.
* New code should not call this function and should call ShowPopup instead.
*
* This fires the popupshowing event synchronously.
*/
void ShowPopupWithAnchorAlign(nsIContent* aPopup,
nsIContent* aAnchorContent,
nsAString& aAnchor,
nsAString& aAlign,
PRInt32 aXPos, PRInt32 aYPos,
PRBool aIsContextMenu);
/*
* Hide a popup aPopup. If the popup is in a <menu>, then also inform the
* menu that the popup is being hidden.
*
* aHideChain - true if the entire chain of menus should be closed. If false,
* only this popup is closed.
* aDeselectMenu - true if the parent <menu> of the popup should be deselected.
* This will be false when the menu is closed by pressing the
* Escape key.
* aAsynchronous - true if the first popuphiding event should be sent
* asynchrously. This should be true if HidePopup is called
* from a frame.
*/
void HidePopup(nsIContent* aPopup,
PRBool aHideChain,
PRBool aDeselectMenu,
PRBool aAsynchronous);
/**
* Hide a popup after a short delay. This is used when rolling over menu items.
* This timer is stored in mCloseTimer. The timer may be cancelled and the popup
* closed by calling KillMenuTimer.
*/
void HidePopupAfterDelay(nsMenuPopupFrame* aPopup);
/**
* Hide all of the popups from a given document. This should be called when the
* document is hidden.
*/
void HidePopupsInDocument(nsIDocument* aDocument);
/**
* Execute a menu command from the triggering event aEvent.
*
* aMenu - a menuitem to execute
* aEvent - the mouse event which triggered the menu to be executed,
* may be null
*/
void ExecuteMenu(nsIContent* aMenu, nsEvent* aEvent);
/**
* Return true if the popup for the supplied content node is open.
*/
PRBool IsPopupOpen(nsIContent* aPopup);
/**
* Return true if the popup for the supplied menu parent is open.
*/
PRBool IsPopupOpenForMenuParent(nsIMenuParent* aMenuParent);
/**
* Return the frame for the topmost open popup of a given type, or null if
* no popup of that type is open. If aType is ePopupTypeAny, a menu of any
* type is returned, except for popups in the mPanels list.
*/
nsIFrame* GetTopPopup(nsPopupType aType);
/**
* Return an array of all the open popup frames for menus, in order from
* top to bottom.
*/
nsTArray<nsIFrame *> GetOpenPopups();
/**
* Return false if a popup may not be opened. This will return false if the
* popup is already open, if the popup is in a content shell that is not
* focused, or if it is a submenu of another menu that isn't open.
*/
PRBool MayShowPopup(nsMenuPopupFrame* aFrame);
/**
* Called when a popup frame is destroyed. In this case, just remove the
* item and later popups from the list. No point going through HidePopup as
* the frames have gone away.
*/
void PopupDestroyed(nsMenuPopupFrame* aFrame);
/**
* Returns true if there is a context menu open. If aPopup is specified,
* then the context menu must be later in the chain than aPopup. If aPopup
* is null, returns true if any context menu at all is open.
*/
PRBool HasContextMenu(nsMenuPopupFrame* aPopup);
/**
* Update the commands for the menus within the menu popup for a given
* content node. aPopup should be a XUL menupopup element. This method
* changes attributes on the children of aPopup, and deals only with the
* content of the popup, not the frames.
*/
void UpdateMenuItems(nsIContent* aPopup);
/**
* Stop the timer which hides a popup after a delay, started by a previous
* call to HidePopupAfterDelay. In addition, the popup awaiting to be hidden
* is closed asynchronously.
*/
void KillMenuTimer();
/**
* Cancel the timer which closes menus after delay, but only if the menu to
* close is aMenuParent. When a submenu is opened, the user might move the
* mouse over a sibling menuitem which would normally close the menu. This
* menu is closed via a timer. However, if the user moves the mouse over the
* submenu before the timer fires, we should instead cancel the timer. This
* ensures that the user can move the mouse diagonally over a menu.
*/
void CancelMenuTimer(nsIMenuParent* aMenuParent);
/**
* Handles navigation for menu accelkeys. Returns true if the key has
* been handled. If aFrame is specified, then the key is handled by that
* popup, otherwise if aFrame is null, the key is handled by the active
* popup or menubar.
*/
PRBool HandleShortcutNavigation(nsIDOMKeyEvent* aKeyEvent,
nsMenuPopupFrame* aFrame);
/**
* Handles cursor navigation within a menu. Returns true if the key has
* been handled.
*/
PRBool HandleKeyboardNavigation(PRUint32 aKeyCode);
/**
* Handle keyboard navigation within a menu popup specified by aFrame.
* Returns true if the key was handled and that other default handling
* should not occur.
*/
PRBool HandleKeyboardNavigationInPopup(nsMenuPopupFrame* aFrame,
nsNavigationDirection aDir)
{
return HandleKeyboardNavigationInPopup(nsnull, aFrame, aDir);
}
NS_IMETHODIMP HandleEvent(nsIDOMEvent* aEvent) { return NS_OK; }
NS_IMETHOD KeyUp(nsIDOMEvent* aKeyEvent);
NS_IMETHOD KeyDown(nsIDOMEvent* aKeyEvent);
NS_IMETHOD KeyPress(nsIDOMEvent* aKeyEvent);
protected:
nsXULPopupManager();
~nsXULPopupManager();
// get the nsMenuFrame, if any, for the given content node
nsMenuFrame* GetMenuFrameForContent(nsIContent* aContent);
// get the nsMenuPopupFrame, if any, for the given content node
nsMenuPopupFrame* GetPopupFrameForContent(nsIContent* aContent);
// return the topmost menu, skipping over invisible popups
nsMenuChainItem* GetTopVisibleMenu();
// callbacks for ShowPopup and HidePopup as events may be done asynchronously
void ShowPopupCallback(nsIContent* aPopup,
nsMenuPopupFrame* aPopupFrame,
PRBool aIsContextMenu,
PRBool aSelectFirstItem);
void HidePopupCallback(nsIContent* aPopup,
nsMenuPopupFrame* aPopupFrame,
nsIContent* aNextPopup,
nsIContent* aLastPopup,
nsPopupType aPopupType,
PRBool aDeselectMenu);
/**
* Fire a popupshowing event on the popup aPopup and then open the popup.
*
* The caller must keep a strong reference to aPopup.
*
* aPopup - the popup node to open
* aMenu - should be set to the parent menu if this is a popup associated
* with a menu. Otherwise, should be null.
* aPresContext - the prescontext
* aPopupType - the popup frame's PopupType
* aIsContextMenu - true for context menus
* aSelectFirstItem - true to select the first item in the menu
*/
void FirePopupShowingEvent(nsIContent* aPopup,
nsIContent* aMenu,
nsPresContext* aPresContext,
nsPopupType aPopupType,
PRBool aIsContextMenu,
PRBool aSelectFirstItem);
/**
* Fire a popuphiding event and then hide the popup. This will be called
* recursively if aNextPopup and aLastPopup are set in order to hide a chain
* of open menus. If these are not set, only one popup is closed. However,
* if the popup type indicates a menu, yet the next popup is not a menu,
* then this ends the closing of popups. This allows a menulist inside a
* non-menu to close up the menu but not close up the panel it is contained
* within.
*
* The caller must keep a strong reference to aPopup, aNextPopup and aLastPopup.
*
* aPopup - the popup to hide
* aNextPopup - the next popup to hide
* aLastPopup - the last popup in the chain to hide
* aPresContext - nsPresContext for the popup's frame
* aPopupType - the PopupType of the frame.
* aDeselectMenu - true to unhighlight the menu when hiding it
*/
void FirePopupHidingEvent(nsIContent* aPopup,
nsIContent* aNextPopup,
nsIContent* aLastPopup,
nsPresContext *aPresContext,
nsPopupType aPopupType,
PRBool aDeselectMenu);
/**
* Handle keyboard navigation within a menu popup specified by aItem.
*/
PRBool HandleKeyboardNavigationInPopup(nsMenuChainItem* aItem,
nsNavigationDirection aDir)
{
return HandleKeyboardNavigationInPopup(aItem, aItem->Frame(), aDir);
}
private:
/**
* Handle keyboard navigation within a menu popup aFrame. If aItem is
* supplied, then it is expected to have a frame equal to aFrame.
* If aItem is non-null, then the navigation may be redirected to
* an open submenu if one exists. Returns true if the key was
* handled and that other default handling should not occur.
*/
PRBool HandleKeyboardNavigationInPopup(nsMenuChainItem* aItem,
nsMenuPopupFrame* aFrame,
nsNavigationDirection aDir);
protected:
/**
* Set mouse capturing for the current popup. This traps mouse clicks that
* occur outside the popup so that it can be closed up. aOldPopup should be
* set to the popup that was previously the current popup.
*/
void SetCaptureState(nsIContent *aOldPopup);
/**
* Key event listeners are attached to the document containing the current
* menu for menu and shortcut navigation. Only one listener is needed at a
* time, stored in mKeyListener, so switch it only if the document changes.
* Having menus in different documents is very rare, so the listeners will
* usually only be attached when the first menu opens and removed when all
* menus have closed.
*
* This is also used when only a menubar is active without any open menus,
* so that keyboard navigation between menus on the menubar may be done.
*/
void UpdateKeyboardListeners();
// the document the key event listener is attached to
nsCOMPtr<nsIDOMEventTarget> mKeyListener;
// widget that is currently listening to rollup events
nsCOMPtr<nsIWidget> mWidget;
// range parent and offset set in SetMouseLocation
nsCOMPtr<nsIDOMNode> mRangeParent;
PRInt32 mRangeOffset;
nsPoint mCachedMousePoint;
// set to the currently active menu bar, if any
nsMenuBarFrame* mActiveMenuBar;
// linked list of dismissable menus.
nsMenuChainItem* mCurrentMenu;
// linked list of panels
nsMenuChainItem* mPanels;
// timer used for HidePopupAfterDelay
nsCOMPtr<nsITimer> mCloseTimer;
// a popup that is waiting on the timer
nsMenuPopupFrame* mTimerMenu;
};
#endif
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