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267 lines
10 KiB
C++
267 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Original Author: David W. Hyatt (hyatt@netscape.com)
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* Mike Pinkerton (pinkerton@netscape.com)
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* Dean Tessman <dean_tessman@hotmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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//
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// nsMenuPopupFrame
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//
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#ifndef nsMenuPopupFrame_h__
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#define nsMenuPopupFrame_h__
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#include "prtypes.h"
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#include "nsIAtom.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMEventTarget.h"
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#include "nsMenuListener.h"
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#include "nsBoxFrame.h"
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#include "nsIMenuParent.h"
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#include "nsIWidget.h"
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#include "nsITimer.h"
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#define INC_TYP_INTERVAL 1000 // 1s. If the interval between two keypresses is shorter than this,
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// treat as a continue typing
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// XXX, kyle.yuan@sun.com, there are 4 definitions for the same purpose:
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// nsMenuPopupFrame.h, nsListControlFrame.cpp, listbox.xml, tree.xml
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// need to find a good place to put them together.
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// if someone changes one, please also change the other.
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nsIFrame* NS_NewMenuPopupFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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class nsIViewManager;
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class nsIView;
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class nsIMenuParent;
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class nsIMenuFrame;
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class nsIDOMXULDocument;
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class nsMenuPopupFrame;
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/**
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* nsMenuPopupTimerMediator is a wrapper around an nsMenuPopupFrame which can be safely
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* passed to timers. The class is reference counted unlike the underlying
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* nsMenuPopupFrame, so that it will exist as long as the timer holds a reference
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* to it. The callback is delegated to the contained nsMenuPopupFrame as long as
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* the contained nsMenuPopupFrame has not been destroyed.
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*/
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class nsMenuPopupTimerMediator : public nsITimerCallback
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{
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public:
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nsMenuPopupTimerMediator(nsMenuPopupFrame* aFrame);
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~nsMenuPopupTimerMediator();
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NS_DECL_ISUPPORTS
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NS_DECL_NSITIMERCALLBACK
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void ClearFrame();
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private:
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// Pointer to the wrapped frame.
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nsMenuPopupFrame* mFrame;
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};
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class nsMenuPopupFrame : public nsBoxFrame, public nsIMenuParent
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{
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public:
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nsMenuPopupFrame(nsIPresShell* aShell, nsStyleContext* aContext);
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NS_DECL_ISUPPORTS
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// nsIMenuParentInterface
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virtual nsIMenuFrame* GetCurrentMenuItem();
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NS_IMETHOD SetCurrentMenuItem(nsIMenuFrame* aMenuItem);
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virtual nsIMenuFrame* GetNextMenuItem(nsIMenuFrame* aStart);
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virtual nsIMenuFrame* GetPreviousMenuItem(nsIMenuFrame* aStart);
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NS_IMETHOD SetActive(PRBool aActiveFlag) { return NS_OK; } // We don't care.
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NS_IMETHOD GetIsActive(PRBool& isActive) { isActive = PR_FALSE; return NS_OK; }
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NS_IMETHOD IsMenuBar(PRBool& isMenuBar) { isMenuBar = PR_FALSE; return NS_OK; }
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NS_IMETHOD ConsumeOutsideClicks(PRBool& aConsumeOutsideClicks);
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NS_IMETHOD ClearRecentlyRolledUp() {return NS_OK;}
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NS_IMETHOD RecentlyRolledUp(nsIMenuFrame *aMenuFrame, PRBool *aJustRolledUp) {*aJustRolledUp = PR_FALSE; return NS_OK;}
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NS_IMETHOD SetIsContextMenu(PRBool aIsContextMenu) { mIsContextMenu = aIsContextMenu; return NS_OK; }
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NS_IMETHOD GetIsContextMenu(PRBool& aIsContextMenu) { aIsContextMenu = mIsContextMenu; return NS_OK; }
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NS_IMETHOD GetParentPopup(nsIMenuParent** aResult);
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// Closes up the chain of open cascaded menus.
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NS_IMETHOD DismissChain();
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// Hides the chain of cascaded menus without closing them up.
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NS_IMETHOD HideChain();
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NS_IMETHOD KillPendingTimers();
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NS_IMETHOD CancelPendingTimers();
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NS_IMETHOD InstallKeyboardNavigator();
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NS_IMETHOD RemoveKeyboardNavigator();
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NS_IMETHOD GetWidget(nsIWidget **aWidget);
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// The dismissal listener gets created and attached to the window.
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NS_IMETHOD AttachedDismissalListener();
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// Overridden methods
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NS_IMETHOD Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow);
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NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType);
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NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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virtual void Destroy();
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virtual void InvalidateInternal(const nsRect& aDamageRect,
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nscoord aX, nscoord aY, nsIFrame* aForChild,
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PRBool aImmediate);
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virtual nsresult CreateWidgetForView(nsIView* aView);
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void GetViewOffset(nsIView* aView, nsPoint& aPoint);
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static void GetRootViewForPopup(nsIFrame* aStartFrame,
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PRBool aStopAtViewManagerRoot,
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nsIView** aResult);
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nsresult SyncViewWithFrame(nsPresContext* aPresContext, const nsString& aPopupAnchor,
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const nsString& aPopupAlign,
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nsIFrame* aFrame, PRInt32 aXPos, PRInt32 aYPos);
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NS_IMETHOD KeyboardNavigation(PRUint32 aKeyCode, PRBool& aHandledFlag);
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NS_IMETHOD ShortcutNavigation(nsIDOMKeyEvent* aKeyEvent, PRBool& aHandledFlag);
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NS_IMETHOD Escape(PRBool& aHandledFlag);
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NS_IMETHOD Enter();
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nsIMenuFrame* FindMenuWithShortcut(nsIDOMKeyEvent* aKeyEvent, PRBool& doAction);
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PRBool IsValidItem(nsIContent* aContent);
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PRBool IsDisabled(nsIContent* aContent);
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nsIMenuParent* GetContextMenu();
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NS_IMETHOD KillCloseTimer();
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virtual nsIAtom* GetType() const { return nsGkAtoms::menuPopupFrame; }
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("MenuPopup"), aResult);
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}
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#endif
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void EnsureMenuItemIsVisible(nsIMenuFrame* aMenuFrame);
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// This sets 'left' and 'top' attributes.
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// May kill the frame.
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void MoveTo(PRInt32 aLeft, PRInt32 aTop);
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void GetAutoPosition(PRBool* aShouldAutoPosition);
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void SetAutoPosition(PRBool aShouldAutoPosition);
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void EnableRollup(PRBool aShouldRollup);
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void SetConsumeRollupEvent(PRUint32 aConsumeMode);
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nsIScrollableView* GetScrollableView(nsIFrame* aStart);
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protected:
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friend class nsMenuPopupTimerMediator;
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NS_HIDDEN_(nsresult) Notify(nsITimer* aTimer);
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// Move without updating attributes.
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void MoveToInternal(PRInt32 aLeft, PRInt32 aTop);
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// redefine to tell the box system not to move the
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// views.
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virtual void GetLayoutFlags(PRUint32& aFlags);
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// given x,y in client coordinates, compensate for nested documents like framesets.
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void AdjustClientXYForNestedDocuments ( nsIDOMXULDocument* inPopupDoc, nsIPresShell* inPopupShell,
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PRInt32 inClientX, PRInt32 inClientY,
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PRInt32* outAdjX, PRInt32* outAdjY ) ;
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void AdjustPositionForAnchorAlign ( PRInt32* ioXPos, PRInt32* ioYPos, const nsRect & inParentRect,
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const nsString& aPopupAnchor, const nsString& aPopupAlign,
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PRBool* outFlushWithTopBottom ) ;
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PRBool IsMoreRoomOnOtherSideOfParent ( PRBool inFlushAboveBelow, PRInt32 inScreenViewLocX, PRInt32 inScreenViewLocY,
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const nsRect & inScreenParentFrameRect, PRInt32 inScreenTopTwips, PRInt32 inScreenLeftTwips,
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PRInt32 inScreenBottomTwips, PRInt32 inScreenRightTwips ) ;
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void MovePopupToOtherSideOfParent ( PRBool inFlushAboveBelow, PRInt32* ioXPos, PRInt32* ioYPos,
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PRInt32* ioScreenViewLocX, PRInt32* ioScreenViewLocY,
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const nsRect & inScreenParentFrameRect, PRInt32 inScreenTopTwips, PRInt32 inScreenLeftTwips,
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PRInt32 inScreenBottomTwips, PRInt32 inScreenRightTwips ) ;
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// Move the popup to the position specified in its |left| and |top| attributes.
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void MoveToAttributePosition();
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nsIMenuFrame* mCurrentMenu; // The current menu that is active.
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nsMenuListener* mKeyboardNavigator; // The listener that tells us about key events.
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nsIDOMEventTarget* mTarget;
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nsIMenuFrame* mTimerMenu; // A menu awaiting closure.
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nsCOMPtr<nsITimer> mCloseTimer; // Close timer.
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// Reference to the mediator which wraps this frame.
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nsRefPtr<nsMenuPopupTimerMediator> mTimerMediator;
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PRPackedBool mIsContextMenu; // is this a context menu?
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PRPackedBool mMenuCanOverlapOSBar; // can we appear over the taskbar/menubar?
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PRPackedBool mShouldAutoPosition; // Should SyncViewWithFrame be allowed to auto position popup?
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PRPackedBool mShouldRollup; // Should this menupopup be allowed to dismiss automatically?
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PRPackedBool mConsumeRollupEvent; // Should the rollup event be consumed?
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PRPackedBool mInContentShell; // True if the popup is in a content shell
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nsString mIncrementalString; // for incremental typing navigation
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}; // class nsMenuPopupFrame
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#endif
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