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nsLeafBoxFrame.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla Communicator client code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
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00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 #ifndef nsLeafBoxFrame_h___
00038 #define nsLeafBoxFrame_h___
00039 
00040 #include "nsLeafFrame.h"
00041 #include "nsBox.h"
00042 
00043 class nsAccessKeyInfo;
00044 
00045 class nsLeafBoxFrame : public nsLeafFrame
00046 {
00047 public:
00048 
00049   friend nsresult NS_NewLeafBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
00050 
00051   NS_DECL_ISUPPORTS_INHERITED
00052 
00053   // nsIBox frame interface
00054   NS_IMETHOD GetPrefSize(nsBoxLayoutState& aState, nsSize& aSize);
00055   NS_IMETHOD GetMinSize(nsBoxLayoutState& aState, nsSize& aSize);
00056   NS_IMETHOD GetMaxSize(nsBoxLayoutState& aState, nsSize& aSize);
00057   NS_IMETHOD GetFlex(nsBoxLayoutState& aState, nscoord& aFlex);
00058   NS_IMETHOD GetAscent(nsBoxLayoutState& aState, nscoord& aAscent);
00059   NS_IMETHOD NeedsRecalc();
00060 
00061 #ifdef DEBUG
00062   NS_IMETHOD GetFrameName(nsAString& aResult) const;
00063 #endif
00064 
00065   // nsIHTMLReflow overrides
00066   NS_IMETHOD Reflow(nsPresContext*          aPresContext,
00067                     nsHTMLReflowMetrics&     aDesiredSize,
00068                     const nsHTMLReflowState& aReflowState,
00069                     nsReflowStatus&          aStatus);
00070 
00071   NS_IMETHOD CharacterDataChanged(nsPresContext* aPresContext,
00072                                   nsIContent*     aChild,
00073                                   PRBool          aAppend);
00074 
00075   NS_IMETHOD DidReflow(nsPresContext*           aPresContext,
00076                        const nsHTMLReflowState*  aReflowState,
00077                        nsDidReflowStatus         aStatus);
00078 
00079   NS_IMETHOD  Init(nsPresContext*  aPresContext,
00080                nsIContent*      aContent,
00081                nsIFrame*        aParent,
00082                nsStyleContext*  aContext,
00083                nsIFrame*        asPrevInFlow);
00084 
00085   NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint,
00086                           nsFramePaintLayer aWhichLayer,    
00087                           nsIFrame**     aFrame);
00088    
00089   NS_IMETHOD AttributeChanged(nsIContent* aChild,
00090                               PRInt32 aNameSpaceID,
00091                               nsIAtom* aAttribute,
00092                               PRInt32 aModType);
00093 
00094   NS_IMETHOD GetMouseThrough(PRBool& aMouseThrough);
00095   virtual PRBool ComputesOwnOverflowArea() { return PR_FALSE; }
00096 
00097 protected:
00098 
00099   virtual PRBool HasStyleChange();
00100   virtual void SetStyleChangeFlag(PRBool aDirty);
00101 
00102   virtual PRBool GetWasCollapsed(nsBoxLayoutState& aState);
00103   virtual void SetWasCollapsed(nsBoxLayoutState& aState, PRBool aWas);
00104 
00105   NS_IMETHOD DoLayout(nsBoxLayoutState& aState);
00106 
00107 #ifdef DEBUG_LAYOUT
00108   virtual void GetBoxName(nsAutoString& aName);
00109 #endif
00110 
00111   virtual void GetDesiredSize(nsPresContext* aPresContext,
00112                               const nsHTMLReflowState& aReflowState,
00113                               nsHTMLReflowMetrics& aDesiredSize) {}
00114 
00115  nsLeafBoxFrame(nsIPresShell* aShell);
00116 
00117 protected:
00118   eMouseThrough mMouseThrough;
00119 
00120 private:
00121 
00122  void UpdateMouseThrough();
00123 
00124 
00125 }; // class nsLeafBoxFrame
00126 
00127 #endif /* nsLeafBoxFrame_h___ */