зеркало из https://github.com/mozilla/gecko-dev.git
This commit is contained in:
kipp
Родитель
16ded12a47
Коммит
fad8e7548d
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@ -0,0 +1,516 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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||||||
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*
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||||||
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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||||||
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsScrollFrame.h"
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#include "nsIPresContext.h"
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#include "nsIContentDelegate.h"
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#include "nsIStyleContext.h"
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#include "nsReflowCommand.h"
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#include "nsIDeviceContext.h"
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#include "nsPageFrame.h"
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#include "nsViewsCID.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsBodyFrame.h"
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#include "nsHTMLFrame.h"
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#include "nsBodyFrame.h"
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class nsScrollBodyFrame : public nsContainerFrame {
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public:
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nsScrollBodyFrame(nsIContent* aContent, nsIFrame* aParent);
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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||||||
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const nsRect& aDirtyRect);
|
||||||
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NS_IMETHOD ListTag(FILE* out = stdout) const;
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protected:
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void CreateFirstChild(nsIPresContext* aPresContext);
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};
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nsScrollBodyFrame::nsScrollBodyFrame(nsIContent* aContent, nsIFrame* aParent)
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: nsContainerFrame(aContent, aParent)
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{
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nsHTMLFrame::CreateViewForFrame(nsnull, this, nsnull, PR_TRUE);
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}
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void
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nsScrollBodyFrame::CreateFirstChild(nsIPresContext* aPresContext)
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{
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// Are we paginated?
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if (aPresContext->IsPaginated()) {
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// Yes. Create the first page frame
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mFirstChild = new nsPageFrame(mContent, this);/* XXX mContent won't work here */
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mChildCount = 1;
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mLastContentOffset = mFirstContentOffset;
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} else {
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if (nsnull != mContent) {
|
||||||
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#if 0
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// Create a frame for the child we are wrapping up
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nsIContentDelegate* cd = mContent->GetDelegate(aPresContext);
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if (nsnull != cd) {
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nsIStyleContext* kidStyleContext =
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aPresContext->ResolveStyleContextFor(mContent, this);
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nsresult rv = cd->CreateFrame(aPresContext, mContent, this,
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kidStyleContext, mFirstChild);
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NS_RELEASE(kidStyleContext);
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if (NS_OK == rv) {
|
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mChildCount = 1;
|
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mLastContentOffset = mFirstContentOffset;
|
||||||
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}
|
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NS_RELEASE(cd);
|
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}
|
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#else
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nsBodyFrame::NewFrame(&mFirstChild, mContent, this);
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mChildCount = 1;
|
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mLastContentOffset = mFirstContentOffset;
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#endif
|
||||||
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}
|
||||||
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}
|
||||||
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}
|
||||||
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|
||||||
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// XXX Hack
|
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#define PAGE_SPACING 100
|
||||||
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|
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NS_IMETHODIMP
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nsScrollBodyFrame::Reflow(nsIPresContext* aPresContext,
|
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nsReflowMetrics& aDesiredSize,
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const nsReflowState& aReflowState,
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nsReflowStatus& aStatus)
|
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{
|
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NS_FRAME_TRACE_MSG(("enter nsScrollBodyFrame::Reflow: maxSize=%d,%d",
|
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aReflowState.maxSize.width,
|
||||||
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aReflowState.maxSize.height));
|
||||||
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|
||||||
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#ifdef NS_DEBUG
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||||||
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PreReflowCheck();
|
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#endif
|
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aStatus = NS_FRAME_COMPLETE;
|
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|
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// XXX Incremental reflow code doesn't handle page mode at all...
|
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if (eReflowReason_Incremental == aReflowState.reason) {
|
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// We don't expect the target of the reflow command to be the root
|
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// content frame
|
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NS_ASSERTION(aReflowState.reflowCommand->GetTarget() != this,
|
||||||
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"root content frame is reflow command target");
|
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|
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// Verify the next frame in the reflow chain is our child frame
|
||||||
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nsIFrame* next = aReflowState.reflowCommand->GetNext();
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NS_ASSERTION(next == mFirstChild, "unexpected next reflow command frame");
|
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|
||||||
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nsSize maxSize(aReflowState.maxSize.width, NS_UNCONSTRAINEDSIZE);
|
||||||
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nsReflowState kidReflowState(next, aReflowState, maxSize);
|
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|
||||||
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// Dispatch the reflow command to our child frame. Allow it to be as high
|
||||||
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// as it wants
|
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mFirstChild->WillReflow(*aPresContext);
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aStatus = ReflowChild(mFirstChild, aPresContext, aDesiredSize, kidReflowState);
|
||||||
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|
||||||
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// Place and size the child. Make sure the child is at least as
|
||||||
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// tall as our max size (the containing window)
|
||||||
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if (aDesiredSize.height < aReflowState.maxSize.height) {
|
||||||
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aDesiredSize.height = aReflowState.maxSize.height;
|
||||||
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}
|
||||||
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|
||||||
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nsRect rect(0, 0, aDesiredSize.width, aDesiredSize.height);
|
||||||
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mFirstChild->SetRect(rect);
|
||||||
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mFirstChild->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||||
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|
||||||
|
} else {
|
||||||
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// Do we have any children?
|
||||||
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if (nsnull == mFirstChild) {
|
||||||
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// No, create the first child frame
|
||||||
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CreateFirstChild(aPresContext);
|
||||||
|
}
|
||||||
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|
||||||
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// Resize our frames
|
||||||
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if (nsnull != mFirstChild) {
|
||||||
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if (aPresContext->IsPaginated()) {
|
||||||
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nscoord y = PAGE_SPACING;
|
||||||
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nsReflowMetrics kidSize(aDesiredSize.maxElementSize);
|
||||||
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nsSize pageSize(aPresContext->GetPageWidth(),
|
||||||
|
aPresContext->GetPageHeight());
|
||||||
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|
||||||
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// Tile the pages vertically
|
||||||
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for (nsIFrame* kidFrame = mFirstChild; nsnull != kidFrame; ) {
|
||||||
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// Reflow the page
|
||||||
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nsReflowState kidReflowState(kidFrame, aReflowState, pageSize);
|
||||||
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nsReflowStatus status;
|
||||||
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|
||||||
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// Place and size the page. If the page is narrower than our
|
||||||
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// max width then center it horizontally
|
||||||
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nsIDeviceContext *dx = aPresContext->GetDeviceContext();
|
||||||
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PRInt32 extra = aReflowState.maxSize.width - kidSize.width -
|
||||||
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NS_TO_INT_ROUND(dx->GetScrollBarWidth());
|
||||||
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NS_RELEASE(dx);
|
||||||
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nscoord x = extra > 0 ? extra / 2 : 0;
|
||||||
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|
||||||
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kidFrame->WillReflow(*aPresContext);
|
||||||
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kidFrame->MoveTo(x, y);
|
||||||
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status = ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState);
|
||||||
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|
||||||
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kidFrame->SetRect(nsRect(x, y, kidSize.width, kidSize.height));
|
||||||
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kidFrame->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||||
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y += kidSize.height;
|
||||||
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|
||||||
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// Leave a slight gap between the pages
|
||||||
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y += PAGE_SPACING;
|
||||||
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|
||||||
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// Is the page complete?
|
||||||
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nsIFrame* kidNextInFlow;
|
||||||
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|
||||||
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kidFrame->GetNextInFlow(kidNextInFlow);
|
||||||
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if (NS_FRAME_IS_COMPLETE(status)) {
|
||||||
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NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
|
||||||
|
} else if (nsnull == kidNextInFlow) {
|
||||||
|
// The page isn't complete and it doesn't have a next-in-flow so
|
||||||
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// create a continuing page
|
||||||
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nsIStyleContext* kidSC;
|
||||||
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kidFrame->GetStyleContext(aPresContext, kidSC);
|
||||||
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nsIFrame* continuingPage;
|
||||||
|
nsresult rv = kidFrame->CreateContinuingFrame(aPresContext, this,
|
||||||
|
kidSC, continuingPage);
|
||||||
|
NS_RELEASE(kidSC);
|
||||||
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|
||||||
|
// Add it to our child list
|
||||||
|
#ifdef NS_DEBUG
|
||||||
|
nsIFrame* kidNextSibling;
|
||||||
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|
||||||
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kidFrame->GetNextSibling(kidNextSibling);
|
||||||
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NS_ASSERTION(nsnull == kidNextSibling, "unexpected sibling");
|
||||||
|
#endif
|
||||||
|
kidFrame->SetNextSibling(continuingPage);
|
||||||
|
mChildCount++;
|
||||||
|
}
|
||||||
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|
||||||
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// Get the next page
|
||||||
|
kidFrame->GetNextSibling(kidFrame);
|
||||||
|
}
|
||||||
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|
||||||
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// Return our desired size
|
||||||
|
aDesiredSize.width = aReflowState.maxSize.width;
|
||||||
|
aDesiredSize.height = y;
|
||||||
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|
||||||
|
} else {
|
||||||
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// Allow the frame to be as wide as our max width, and as high
|
||||||
|
// as it wants to be.
|
||||||
|
nsSize maxSize(aReflowState.maxSize.width, NS_UNCONSTRAINEDSIZE);
|
||||||
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nsReflowState kidReflowState(mFirstChild, aReflowState, maxSize);
|
||||||
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|
||||||
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// Get the child's desired size. Our child's desired height is our
|
||||||
|
// desired size
|
||||||
|
mFirstChild->WillReflow(*aPresContext);
|
||||||
|
aStatus = ReflowChild(mFirstChild, aPresContext, aDesiredSize, kidReflowState);
|
||||||
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(aStatus), "bad status");
|
||||||
|
|
||||||
|
#if 0
|
||||||
|
// Place and size the child. Make sure the child is at least as
|
||||||
|
// tall as our max size (the containing window)
|
||||||
|
if (aDesiredSize.height < aReflowState.maxSize.height) {
|
||||||
|
aDesiredSize.height = aReflowState.maxSize.height;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Place and size the child
|
||||||
|
nsRect rect(0, 0, aDesiredSize.width, aDesiredSize.height);
|
||||||
|
mFirstChild->SetRect(rect);
|
||||||
|
mFirstChild->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
aDesiredSize.width = aReflowState.maxSize.width;
|
||||||
|
aDesiredSize.height = 1;
|
||||||
|
aDesiredSize.ascent = aDesiredSize.height;
|
||||||
|
aDesiredSize.descent = 0;
|
||||||
|
if (nsnull != aDesiredSize.maxElementSize) {
|
||||||
|
aDesiredSize.maxElementSize->width = 0;
|
||||||
|
aDesiredSize.maxElementSize->height = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef NS_DEBUG
|
||||||
|
PostReflowCheck(aStatus);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
NS_FRAME_TRACE_MSG(
|
||||||
|
("exit nsScrollBodyFrame::Reflow: status=%d width=%d height=%d",
|
||||||
|
aStatus, aDesiredSize.width, aDesiredSize.height));
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsScrollBodyFrame::Paint(nsIPresContext& aPresContext,
|
||||||
|
nsIRenderingContext& aRenderingContext,
|
||||||
|
const nsRect& aDirtyRect)
|
||||||
|
{
|
||||||
|
// If we're paginated then fill the dirty rect with white
|
||||||
|
if (aPresContext.IsPaginated()) {
|
||||||
|
// Cross hatching would be nicer...
|
||||||
|
aRenderingContext.SetColor(NS_RGB(255,255,255));
|
||||||
|
aRenderingContext.FillRect(aDirtyRect);
|
||||||
|
}
|
||||||
|
|
||||||
|
nsContainerFrame::Paint(aPresContext, aRenderingContext, aDirtyRect);
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsScrollBodyFrame::ListTag(FILE* out) const
|
||||||
|
{
|
||||||
|
fputs("*scrollbodyframe<", out);
|
||||||
|
nsIAtom* atom = mContent->GetTag();
|
||||||
|
if (nsnull != atom) {
|
||||||
|
nsAutoString tmp;
|
||||||
|
atom->ToString(tmp);
|
||||||
|
fputs(tmp, out);
|
||||||
|
}
|
||||||
|
PRInt32 contentIndex;
|
||||||
|
GetContentIndex(contentIndex);
|
||||||
|
fprintf(out, ">(%d)@%p", contentIndex, this);
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
//----------------------------------------------------------------------
|
||||||
|
|
||||||
|
class nsScrollInnerFrame : public nsContainerFrame {
|
||||||
|
public:
|
||||||
|
nsScrollInnerFrame(nsIContent* aContent, nsIFrame* aParent);
|
||||||
|
|
||||||
|
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
|
||||||
|
nsReflowMetrics& aDesiredSize,
|
||||||
|
const nsReflowState& aReflowState,
|
||||||
|
nsReflowStatus& aStatus);
|
||||||
|
|
||||||
|
NS_IMETHOD ListTag(FILE* out = stdout) const;
|
||||||
|
|
||||||
|
protected:
|
||||||
|
};
|
||||||
|
|
||||||
|
nsScrollInnerFrame::nsScrollInnerFrame(nsIContent* aContent, nsIFrame* aParent)
|
||||||
|
: nsContainerFrame(aContent, aParent)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsScrollInnerFrame::Reflow(nsIPresContext* aPresContext,
|
||||||
|
nsReflowMetrics& aDesiredSize,
|
||||||
|
const nsReflowState& aReflowState,
|
||||||
|
nsReflowStatus& aStatus)
|
||||||
|
{
|
||||||
|
NS_FRAME_TRACE_MSG(("enter nsScrollInnerFrame::Reflow: maxSize=%d,%d",
|
||||||
|
aReflowState.maxSize.width,
|
||||||
|
aReflowState.maxSize.height));
|
||||||
|
|
||||||
|
nsIView* view;
|
||||||
|
GetView(view);
|
||||||
|
if (nsnull == view) {
|
||||||
|
static NS_DEFINE_IID(kScrollingViewCID, NS_SCROLLING_VIEW_CID);
|
||||||
|
static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
|
||||||
|
|
||||||
|
// Get parent view
|
||||||
|
nsIFrame* parent;
|
||||||
|
GetParentWithView(parent);
|
||||||
|
NS_ASSERTION(parent, "GetParentWithView failed");
|
||||||
|
nsIView* parentView;
|
||||||
|
parent->GetView(parentView);
|
||||||
|
NS_ASSERTION(parentView, "GetParentWithView failed");
|
||||||
|
|
||||||
|
nsIViewManager* viewManager = parentView->GetViewManager();
|
||||||
|
|
||||||
|
nsresult rv = NSRepository::CreateInstance(kScrollingViewCID,
|
||||||
|
nsnull,
|
||||||
|
kIViewIID,
|
||||||
|
(void **)&view);
|
||||||
|
if ((NS_OK != rv) || (NS_OK != view->Init(viewManager,
|
||||||
|
mRect,
|
||||||
|
parentView))) {
|
||||||
|
NS_RELEASE(parentView);
|
||||||
|
NS_RELEASE(viewManager);
|
||||||
|
return rv;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Insert new view as a child of the parent view
|
||||||
|
viewManager->InsertChild(parentView, view, 0);
|
||||||
|
NS_RELEASE(viewManager);
|
||||||
|
|
||||||
|
NS_RELEASE(parentView);
|
||||||
|
SetView(view);
|
||||||
|
}
|
||||||
|
if (nsnull == view) {
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (nsnull == mFirstChild) {
|
||||||
|
mFirstChild = new nsScrollBodyFrame(mContent, this);
|
||||||
|
mChildCount = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Allow the frame to be as wide as our max width, and as high
|
||||||
|
// as it wants to be.
|
||||||
|
nsSize maxSize(aReflowState.maxSize.width, NS_UNCONSTRAINEDSIZE);
|
||||||
|
nsReflowState kidReflowState(mFirstChild, aReflowState, maxSize);
|
||||||
|
|
||||||
|
// Get the child's desired size. Our child's desired height is our
|
||||||
|
// desired size
|
||||||
|
mFirstChild->WillReflow(*aPresContext);
|
||||||
|
aStatus = ReflowChild(mFirstChild, aPresContext, aDesiredSize,
|
||||||
|
kidReflowState);
|
||||||
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(aStatus), "bad status");
|
||||||
|
|
||||||
|
// Place and size the child
|
||||||
|
nsRect rect(0, 0, aDesiredSize.width, aDesiredSize.height);
|
||||||
|
mFirstChild->SetRect(rect);
|
||||||
|
mFirstChild->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||||
|
|
||||||
|
NS_RELEASE(view);
|
||||||
|
|
||||||
|
NS_FRAME_TRACE_MSG(
|
||||||
|
("exit nsScrollInnerFrame::Reflow: status=%d width=%d height=%d",
|
||||||
|
aStatus, aDesiredSize.width, aDesiredSize.height));
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsScrollInnerFrame::ListTag(FILE* out) const
|
||||||
|
{
|
||||||
|
fputs("*scrollinnerframe<", out);
|
||||||
|
nsIAtom* atom = mContent->GetTag();
|
||||||
|
if (nsnull != atom) {
|
||||||
|
nsAutoString tmp;
|
||||||
|
atom->ToString(tmp);
|
||||||
|
fputs(tmp, out);
|
||||||
|
}
|
||||||
|
PRInt32 contentIndex;
|
||||||
|
GetContentIndex(contentIndex);
|
||||||
|
fprintf(out, ">(%d)@%p", contentIndex, this);
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
//----------------------------------------------------------------------
|
||||||
|
|
||||||
|
class nsScrollOuterFrame : public nsContainerFrame {
|
||||||
|
public:
|
||||||
|
nsScrollOuterFrame(nsIContent* aContent, nsIFrame* aParent);
|
||||||
|
|
||||||
|
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
|
||||||
|
nsReflowMetrics& aDesiredSize,
|
||||||
|
const nsReflowState& aReflowState,
|
||||||
|
nsReflowStatus& aStatus);
|
||||||
|
|
||||||
|
NS_IMETHOD ListTag(FILE* out = stdout) const;
|
||||||
|
|
||||||
|
protected:
|
||||||
|
};
|
||||||
|
|
||||||
|
nsScrollOuterFrame::nsScrollOuterFrame(nsIContent* aContent, nsIFrame* aParent)
|
||||||
|
: nsContainerFrame(aContent, aParent)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsScrollOuterFrame::Reflow(nsIPresContext* aPresContext,
|
||||||
|
nsReflowMetrics& aDesiredSize,
|
||||||
|
const nsReflowState& aReflowState,
|
||||||
|
nsReflowStatus& aStatus)
|
||||||
|
{
|
||||||
|
NS_FRAME_TRACE_MSG(("enter nsScrollOuterFrame::Reflow: maxSize=%d,%d",
|
||||||
|
aReflowState.maxSize.width,
|
||||||
|
aReflowState.maxSize.height));
|
||||||
|
|
||||||
|
if (nsnull == mFirstChild) {
|
||||||
|
mFirstChild = new nsScrollInnerFrame(mContent, this);
|
||||||
|
mChildCount = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
nsStyleSpacing* spacing = (nsStyleSpacing*)
|
||||||
|
mStyleContext->GetData(eStyleStruct_Spacing);
|
||||||
|
nsMargin borderPadding;
|
||||||
|
spacing->CalcBorderPaddingFor(this, borderPadding);
|
||||||
|
nscoord lr = borderPadding.left + borderPadding.right;
|
||||||
|
|
||||||
|
// Allow the frame to be as wide as our max width, and as high
|
||||||
|
// as it wants to be.
|
||||||
|
nsSize maxSize(aReflowState.maxSize.width - lr, NS_UNCONSTRAINEDSIZE);
|
||||||
|
nsReflowState kidReflowState(mFirstChild, aReflowState, maxSize);
|
||||||
|
|
||||||
|
// Get the child's desired size. Our child's desired height is
|
||||||
|
// approximately our desired size
|
||||||
|
mFirstChild->WillReflow(*aPresContext);
|
||||||
|
aStatus = ReflowChild(mFirstChild, aPresContext, aDesiredSize,
|
||||||
|
kidReflowState);
|
||||||
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(aStatus), "bad status");
|
||||||
|
|
||||||
|
// Place and size the child
|
||||||
|
nsRect rect(borderPadding.left, borderPadding.top,
|
||||||
|
aDesiredSize.width, aDesiredSize.height);
|
||||||
|
mFirstChild->SetRect(rect);
|
||||||
|
mFirstChild->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||||
|
|
||||||
|
aDesiredSize.width += lr;
|
||||||
|
aDesiredSize.height += borderPadding.top + borderPadding.bottom;
|
||||||
|
aDesiredSize.ascent = aDesiredSize.height;
|
||||||
|
aDesiredSize.descent = 0;
|
||||||
|
|
||||||
|
NS_FRAME_TRACE_MSG(
|
||||||
|
("exit nsScrollOuterFrame::Reflow: status=%d width=%d height=%d",
|
||||||
|
aStatus, aDesiredSize.width, aDesiredSize.height));
|
||||||
|
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsScrollOuterFrame::ListTag(FILE* out) const
|
||||||
|
{
|
||||||
|
fputs("*scrollouterframe<", out);
|
||||||
|
nsIAtom* atom = mContent->GetTag();
|
||||||
|
if (nsnull != atom) {
|
||||||
|
nsAutoString tmp;
|
||||||
|
atom->ToString(tmp);
|
||||||
|
fputs(tmp, out);
|
||||||
|
}
|
||||||
|
PRInt32 contentIndex;
|
||||||
|
GetContentIndex(contentIndex);
|
||||||
|
fprintf(out, ">(%d)@%p", contentIndex, this);
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
//----------------------------------------------------------------------
|
||||||
|
|
||||||
|
nsresult
|
||||||
|
NS_NewScrollFrame(nsIFrame** aInstancePtrResult,
|
||||||
|
nsIContent* aContent,
|
||||||
|
nsIFrame* aParent)
|
||||||
|
{
|
||||||
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
|
||||||
|
if (nsnull == aInstancePtrResult) {
|
||||||
|
return NS_ERROR_NULL_POINTER;
|
||||||
|
}
|
||||||
|
nsIFrame* it = new nsScrollOuterFrame(aContent, aParent);
|
||||||
|
if (nsnull == it) {
|
||||||
|
return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
}
|
||||||
|
*aInstancePtrResult = it;
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,27 @@
|
||||||
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
||||||
|
*
|
||||||
|
* The contents of this file are subject to the Netscape Public License
|
||||||
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
* http://www.mozilla.org/NPL/
|
||||||
|
*
|
||||||
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
* for the specific language governing rights and limitations under the
|
||||||
|
* NPL.
|
||||||
|
*
|
||||||
|
* The Initial Developer of this code under the NPL is Netscape
|
||||||
|
* Communications Corporation. Portions created by Netscape are
|
||||||
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
* Reserved.
|
||||||
|
*/
|
||||||
|
#ifndef nsScrollFrame_h___
|
||||||
|
#define nsScrollFrame_h___
|
||||||
|
|
||||||
|
#include "nsContainerFrame.h"
|
||||||
|
|
||||||
|
extern nsresult NS_NewScrollFrame(nsIFrame** aInstancePtrResult,
|
||||||
|
nsIContent* aContent,
|
||||||
|
nsIFrame* aParent);
|
||||||
|
|
||||||
|
#endif /* nsScrollFrame_h___ */
|
||||||
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