/* -*- 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 * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * 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 ***** */ #ifndef nsViewportFrame_h___ #define nsViewportFrame_h___ #include "nsContainerFrame.h" #include "nsLayoutAtoms.h" #include "nsPresContext.h" #include "nsReflowPath.h" #include "nsIPresShell.h" #include "nsAbsoluteContainingBlock.h" class nsFixedContainingBlock : public nsAbsoluteContainingBlock { public: nsFixedContainingBlock() { } // useful for debugging virtual ~nsFixedContainingBlock() { } // useful for debugging virtual nsIAtom* GetChildListName() const { return nsLayoutAtoms::fixedList; } }; /** * ViewportFrame is the parent of a single child - the doc root frame or a scroll frame * containing the doc root frame. ViewportFrame stores this child in its primary child * list. It stores fixed positioned items in a secondary child list and its mFixedContainer * delegate handles them. */ class ViewportFrame : public nsContainerFrame { public: ViewportFrame() { } // useful for debugging virtual ~ViewportFrame() { } // useful for debugging NS_IMETHOD Destroy(nsPresContext* aPresContext); NS_IMETHOD SetInitialChildList(nsPresContext* aPresContext, nsIAtom* aListName, nsIFrame* aChildList); virtual nsIFrame* GetFrameForPoint(const nsPoint& aPoint, nsFramePaintLayer aWhichLayer); NS_IMETHOD AppendFrames(nsIAtom* aListName, nsIFrame* aFrameList); NS_IMETHOD InsertFrames(nsIAtom* aListName, nsIFrame* aPrevFrame, nsIFrame* aFrameList); NS_IMETHOD RemoveFrame(nsIAtom* aListName, nsIFrame* aOldFrame); virtual nsIAtom* GetAdditionalChildListName(PRInt32 aIndex) const; virtual nsIFrame* GetFirstChild(nsIAtom* aListName) const; NS_IMETHOD Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); virtual PRBool CanPaintBackground() { return PR_FALSE; } /** * Get the "type" of the frame * * @see nsLayoutAtoms::viewportFrame */ virtual nsIAtom* GetType() const; virtual PRBool IsContainingBlock() const; #ifdef DEBUG NS_IMETHOD GetFrameName(nsAString& aResult) const; #endif protected: nsPoint AdjustReflowStateForScrollbars(nsHTMLReflowState* aReflowState) const; protected: nsFixedContainingBlock mFixedContainer; }; #endif // nsViewportFrame_h___