mirror of
https://github.com/mozilla/gecko-dev.git
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Moved some methods from various places into this class
This commit is contained in:
kipp%netscape.com
parent
c60547b531
commit
11b06203de
@ -35,9 +35,10 @@
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#include "nsPlaceholderFrame.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLBase.h"
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#include "nsScrollFrame.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsViewsCID.h"
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#include "nsIReflowCommand.h"
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NS_DEF_PTR(nsIStyleContext);
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@ -263,44 +264,8 @@ nsHTMLContainerFrame::ContentDeleted(nsIPresShell* aShell,
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return rv;
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}
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nsresult
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nsHTMLContainerFrame::ProcessInitialReflow(nsIPresContext* aPresContext)
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{
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if (nsnull == mPrevInFlow) {
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const nsStyleDisplay* display = (const nsStyleDisplay*)
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mStyleContext->GetStyleData(eStyleStruct_Display);
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::ProcessInitialReflow: display=%d",
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display->mDisplay));
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if (NS_STYLE_DISPLAY_LIST_ITEM == display->mDisplay) {
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// This container is a list-item container. Therefore it needs a
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// bullet content object.
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nsIHTMLContent* bullet;
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nsresult rv = NS_NewHTMLBullet(&bullet);
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if (NS_OK != rv) {
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return rv;
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}
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// Insert the bullet. Do not allow an incremental reflow operation
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// to occur.
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mContent->InsertChildAt(bullet, 0, PR_FALSE);
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}
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}
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return NS_OK;
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}
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PRBool
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nsHTMLContainerFrame::DeleteNextInFlowsFor(nsIPresContext& aPresContext,
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nsIFrame* aChild)
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{
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// XXX get rid of this sillyness
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NS_NOTREACHED("subclass should've overriden this!");
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return PR_TRUE;
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}
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nsPlaceholderFrame*
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nsHTMLContainerFrame::CreatePlaceholderFrame(nsIPresContext* aPresContext,
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nsHTMLContainerFrame::CreatePlaceholderFrame(nsIPresContext& aPresContext,
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nsIFrame* aFloatedFrame)
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{
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nsIContent* content;
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@ -312,9 +277,234 @@ nsHTMLContainerFrame::CreatePlaceholderFrame(nsIPresContext* aPresContext,
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// Let the placeholder share the same style context as the floated element
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nsIStyleContext* kidSC;
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aFloatedFrame->GetStyleContext(aPresContext, kidSC);
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placeholder->SetStyleContext(aPresContext, kidSC);
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aFloatedFrame->GetStyleContext(&aPresContext, kidSC);
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placeholder->SetStyleContext(&aPresContext, kidSC);
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NS_RELEASE(kidSC);
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return placeholder;
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}
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/**
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* Create a next-in-flow for aFrame. Will return the newly created
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* frame in aNextInFlowResult <b>if and only if</b> a new frame is
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* created; otherwise nsnull is returned in aNextInFlowResult.
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*/
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nsresult
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nsHTMLContainerFrame::CreateNextInFlow(nsIPresContext& aPresContext,
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nsIFrame* aOuterFrame,
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nsIFrame* aFrame,
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nsIFrame*& aNextInFlowResult)
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{
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aNextInFlowResult = nsnull;
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nsIFrame* nextInFlow;
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aFrame->GetNextInFlow(nextInFlow);
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if (nsnull == nextInFlow) {
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// Create a continuation frame for the child frame and insert it
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// into our lines child list.
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nsIFrame* nextFrame;
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aFrame->GetNextSibling(nextFrame);
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nsIStyleContext* kidSC;
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aFrame->GetStyleContext(&aPresContext, kidSC);
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aFrame->CreateContinuingFrame(aPresContext, aOuterFrame,
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kidSC, nextInFlow);
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NS_RELEASE(kidSC);
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if (nsnull == nextInFlow) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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aFrame->SetNextSibling(nextInFlow);
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nextInFlow->SetNextSibling(nextFrame);
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NS_FRAME_LOG(NS_FRAME_TRACE_NEW_FRAMES,
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("nsInlineReflow::MaybeCreateNextInFlow: frame=%p nextInFlow=%p",
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aFrame, nextInFlow));
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aNextInFlowResult = nextInFlow;
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}
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return NS_OK;
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}
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// Walk the new frames and check if there are any elements that need
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// wrapping. For floating frames we create a placeholder frame to wrap
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// around the original frame. In addition, if the floating object
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// needs a body frame, provide that too.
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// For placeholder frames we...
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// For frames that require scrolling we...
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nsresult
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nsHTMLContainerFrame::WrapFrames(nsIPresContext& aPresContext,
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nsIFrame* aPrevFrame, nsIFrame* aNewFrame)
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{
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nsresult rv = NS_OK;
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nsIFrame* frame = aNewFrame;
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while (nsnull != frame) {
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const nsStyleDisplay* display;
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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// See if the element wants to be floated
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if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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// Create a placeholder frame that will serve as the anchor point.
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nsPlaceholderFrame* placeholder =
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CreatePlaceholderFrame(aPresContext, frame);
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if (nsnull == placeholder) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Remove the floated element from the flow, and replace it with
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// the placeholder frame
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if (nsnull == aPrevFrame) {
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mFirstChild = placeholder;
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} else {
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aPrevFrame->SetNextSibling(placeholder);
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}
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nsIFrame* nextSibling;
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frame->GetNextSibling(nextSibling);
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placeholder->SetNextSibling(nextSibling);
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frame->SetNextSibling(nsnull);
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// If the floated element can contain children then wrap it in a
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// BODY frame before floating it
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nsIContent* content;
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PRBool isContainer;
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frame->GetContent(content);
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if (nsnull != content) {
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content->CanContainChildren(isContainer);
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if (isContainer) {
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// Wrap the floated element in a BODY frame.
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nsIFrame* wrapperFrame;
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rv = NS_NewBodyFrame(content, this, wrapperFrame);
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if (NS_OK != rv) {
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return rv;
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}
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// The body wrapper frame gets the original style context,
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// and the floated frame gets a pseudo style context
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nsIStyleContext* kidStyle;
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frame->GetStyleContext(&aPresContext, kidStyle);
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wrapperFrame->SetStyleContext(&aPresContext, kidStyle);
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NS_RELEASE(kidStyle);
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nsIStyleContext* pseudoStyle;
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pseudoStyle = aPresContext.ResolvePseudoStyleContextFor(nsHTMLAtoms::columnPseudo,
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wrapperFrame);
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frame->SetStyleContext(&aPresContext, pseudoStyle);
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NS_RELEASE(pseudoStyle);
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// Init the body frame
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wrapperFrame->Init(aPresContext, frame);
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// Bind the wrapper frame to the placeholder
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placeholder->SetAnchoredItem(wrapperFrame);
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}
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NS_RELEASE(content);
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}
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frame = placeholder;
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}
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// Remember the previous frame
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aPrevFrame = frame;
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frame->GetNextSibling(frame);
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}
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return rv;
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}
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nsresult
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nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
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nsIFrame* aFrame,
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nsIStyleContext* aStyleContext,
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PRBool aForce)
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{
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nsIView* view;
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aFrame->GetView(view);
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if (nsnull == view) {
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// We don't yet have a view; see if we need a view
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// See if the opacity is not the same as the geometric parent
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// frames opacity.
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if (!aForce) {
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nsIFrame* parent;
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aFrame->GetGeometricParent(parent);
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if (nsnull != parent) {
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// Get my nsStyleColor
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const nsStyleColor* myColor = (const nsStyleColor*)
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aStyleContext->GetStyleData(eStyleStruct_Color);
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// Get parent's nsStyleColor
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const nsStyleColor* parentColor;
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parent->GetStyleData(eStyleStruct_Color,
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(const nsStyleStruct*&)parentColor);
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// If the opacities are different then I need a view
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if (myColor->mOpacity != parentColor->mOpacity) {
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::CreateViewForFrame: frame=%p opacity=%g parentOpacity=%g",
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aFrame, myColor->mOpacity, parentColor->mOpacity));
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aForce = PR_TRUE;
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}
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}
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}
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// See if the frame is being relatively positioned
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if (!aForce) {
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const nsStylePosition* position = (const nsStylePosition*)
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aStyleContext->GetStyleData(eStyleStruct_Position);
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if (NS_STYLE_POSITION_RELATIVE == position->mPosition) {
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::CreateViewForFrame: frame=%p relatively positioned",
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aFrame));
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aForce = PR_TRUE;
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}
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}
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if (aForce) {
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// Create a view
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nsIFrame* parent;
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nsIView* view;
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aFrame->GetParentWithView(parent);
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NS_ASSERTION(parent, "GetParentWithView failed");
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nsIView* parView;
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parent->GetView(parView);
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NS_ASSERTION(parView, "no parent with view");
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// Create a view
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static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
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static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
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nsresult result = nsRepository::CreateInstance(kViewCID,
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nsnull,
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kIViewIID,
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(void **)&view);
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if (NS_OK == result) {
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nsIView* rootView = parView;
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nsIViewManager* viewManager;
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rootView->GetViewManager(viewManager);
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// Initialize the view
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NS_ASSERTION(nsnull != viewManager, "null view manager");
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nsRect bounds;
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aFrame->GetRect(bounds);
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view->Init(viewManager, bounds, rootView);
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viewManager->InsertChild(rootView, view, 0);
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NS_RELEASE(viewManager);
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}
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// Remember our view
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aFrame->SetView(view);
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::CreateViewForFrame: frame=%p view=%p",
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aFrame));
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return result;
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}
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}
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return NS_OK;
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}
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@ -54,18 +54,29 @@ public:
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nsIContent* aChild,
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PRInt32 aIndexInParent);
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virtual PRBool DeleteNextInFlowsFor(nsIPresContext& aPresContext,
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nsIFrame* aChild);
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nsresult WrapFrames(nsIPresContext& aPresContext,
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nsIFrame* aPrevFrame, nsIFrame* aFrame);
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nsPlaceholderFrame* CreatePlaceholderFrame(nsIPresContext* aPresContext,
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nsPlaceholderFrame* CreatePlaceholderFrame(nsIPresContext& aPresContext,
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nsIFrame* aFloatedFrame);
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// Helper method to create next-in-flows if necessary
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static nsresult CreateNextInFlow(nsIPresContext& aPresContext,
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nsIFrame* aOuterFrame,
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nsIFrame* aFrame,
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nsIFrame*& aNextInFlowResult);
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// Helper method to wrap views around frames. Used by containers
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// under special circumstances (can be used by leaf frames as well)
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static nsresult CreateViewForFrame(nsIPresContext& aPresContext,
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nsIFrame* aFrame,
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nsIStyleContext* aStyleContext,
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PRBool aForce);
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protected:
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virtual ~nsHTMLContainerFrame();
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virtual PRIntn GetSkipSides() const = 0;
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nsresult ProcessInitialReflow(nsIPresContext* aPresContext);
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};
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#endif /* nsHTMLContainerFrame_h___ */
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@ -35,9 +35,10 @@
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#include "nsPlaceholderFrame.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLBase.h"
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#include "nsScrollFrame.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsViewsCID.h"
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#include "nsIReflowCommand.h"
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NS_DEF_PTR(nsIStyleContext);
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@ -263,44 +264,8 @@ nsHTMLContainerFrame::ContentDeleted(nsIPresShell* aShell,
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return rv;
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}
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nsresult
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nsHTMLContainerFrame::ProcessInitialReflow(nsIPresContext* aPresContext)
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{
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if (nsnull == mPrevInFlow) {
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const nsStyleDisplay* display = (const nsStyleDisplay*)
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mStyleContext->GetStyleData(eStyleStruct_Display);
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::ProcessInitialReflow: display=%d",
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display->mDisplay));
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if (NS_STYLE_DISPLAY_LIST_ITEM == display->mDisplay) {
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// This container is a list-item container. Therefore it needs a
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// bullet content object.
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nsIHTMLContent* bullet;
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nsresult rv = NS_NewHTMLBullet(&bullet);
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if (NS_OK != rv) {
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return rv;
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}
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// Insert the bullet. Do not allow an incremental reflow operation
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// to occur.
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mContent->InsertChildAt(bullet, 0, PR_FALSE);
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}
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}
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return NS_OK;
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}
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PRBool
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nsHTMLContainerFrame::DeleteNextInFlowsFor(nsIPresContext& aPresContext,
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nsIFrame* aChild)
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{
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// XXX get rid of this sillyness
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NS_NOTREACHED("subclass should've overriden this!");
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return PR_TRUE;
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}
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nsPlaceholderFrame*
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nsHTMLContainerFrame::CreatePlaceholderFrame(nsIPresContext* aPresContext,
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nsHTMLContainerFrame::CreatePlaceholderFrame(nsIPresContext& aPresContext,
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nsIFrame* aFloatedFrame)
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{
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nsIContent* content;
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@ -312,9 +277,234 @@ nsHTMLContainerFrame::CreatePlaceholderFrame(nsIPresContext* aPresContext,
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// Let the placeholder share the same style context as the floated element
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nsIStyleContext* kidSC;
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aFloatedFrame->GetStyleContext(aPresContext, kidSC);
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placeholder->SetStyleContext(aPresContext, kidSC);
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aFloatedFrame->GetStyleContext(&aPresContext, kidSC);
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placeholder->SetStyleContext(&aPresContext, kidSC);
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NS_RELEASE(kidSC);
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return placeholder;
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}
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/**
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* Create a next-in-flow for aFrame. Will return the newly created
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* frame in aNextInFlowResult <b>if and only if</b> a new frame is
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* created; otherwise nsnull is returned in aNextInFlowResult.
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*/
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nsresult
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nsHTMLContainerFrame::CreateNextInFlow(nsIPresContext& aPresContext,
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nsIFrame* aOuterFrame,
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nsIFrame* aFrame,
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nsIFrame*& aNextInFlowResult)
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{
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aNextInFlowResult = nsnull;
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nsIFrame* nextInFlow;
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aFrame->GetNextInFlow(nextInFlow);
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if (nsnull == nextInFlow) {
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// Create a continuation frame for the child frame and insert it
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// into our lines child list.
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nsIFrame* nextFrame;
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aFrame->GetNextSibling(nextFrame);
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nsIStyleContext* kidSC;
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aFrame->GetStyleContext(&aPresContext, kidSC);
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aFrame->CreateContinuingFrame(aPresContext, aOuterFrame,
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kidSC, nextInFlow);
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NS_RELEASE(kidSC);
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if (nsnull == nextInFlow) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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aFrame->SetNextSibling(nextInFlow);
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nextInFlow->SetNextSibling(nextFrame);
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NS_FRAME_LOG(NS_FRAME_TRACE_NEW_FRAMES,
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("nsInlineReflow::MaybeCreateNextInFlow: frame=%p nextInFlow=%p",
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aFrame, nextInFlow));
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aNextInFlowResult = nextInFlow;
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}
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return NS_OK;
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}
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// Walk the new frames and check if there are any elements that need
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// wrapping. For floating frames we create a placeholder frame to wrap
|
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// around the original frame. In addition, if the floating object
|
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// needs a body frame, provide that too.
|
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|
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// For placeholder frames we...
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// For frames that require scrolling we...
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nsresult
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nsHTMLContainerFrame::WrapFrames(nsIPresContext& aPresContext,
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nsIFrame* aPrevFrame, nsIFrame* aNewFrame)
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{
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nsresult rv = NS_OK;
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nsIFrame* frame = aNewFrame;
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while (nsnull != frame) {
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const nsStyleDisplay* display;
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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// See if the element wants to be floated
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if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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// Create a placeholder frame that will serve as the anchor point.
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nsPlaceholderFrame* placeholder =
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CreatePlaceholderFrame(aPresContext, frame);
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if (nsnull == placeholder) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Remove the floated element from the flow, and replace it with
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// the placeholder frame
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if (nsnull == aPrevFrame) {
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mFirstChild = placeholder;
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} else {
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aPrevFrame->SetNextSibling(placeholder);
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}
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nsIFrame* nextSibling;
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frame->GetNextSibling(nextSibling);
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placeholder->SetNextSibling(nextSibling);
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frame->SetNextSibling(nsnull);
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// If the floated element can contain children then wrap it in a
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// BODY frame before floating it
|
||||
nsIContent* content;
|
||||
PRBool isContainer;
|
||||
frame->GetContent(content);
|
||||
if (nsnull != content) {
|
||||
content->CanContainChildren(isContainer);
|
||||
if (isContainer) {
|
||||
// Wrap the floated element in a BODY frame.
|
||||
nsIFrame* wrapperFrame;
|
||||
rv = NS_NewBodyFrame(content, this, wrapperFrame);
|
||||
if (NS_OK != rv) {
|
||||
return rv;
|
||||
}
|
||||
|
||||
// The body wrapper frame gets the original style context,
|
||||
// and the floated frame gets a pseudo style context
|
||||
nsIStyleContext* kidStyle;
|
||||
frame->GetStyleContext(&aPresContext, kidStyle);
|
||||
wrapperFrame->SetStyleContext(&aPresContext, kidStyle);
|
||||
NS_RELEASE(kidStyle);
|
||||
|
||||
nsIStyleContext* pseudoStyle;
|
||||
pseudoStyle = aPresContext.ResolvePseudoStyleContextFor(nsHTMLAtoms::columnPseudo,
|
||||
wrapperFrame);
|
||||
frame->SetStyleContext(&aPresContext, pseudoStyle);
|
||||
NS_RELEASE(pseudoStyle);
|
||||
|
||||
// Init the body frame
|
||||
wrapperFrame->Init(aPresContext, frame);
|
||||
|
||||
// Bind the wrapper frame to the placeholder
|
||||
placeholder->SetAnchoredItem(wrapperFrame);
|
||||
}
|
||||
NS_RELEASE(content);
|
||||
}
|
||||
|
||||
frame = placeholder;
|
||||
}
|
||||
|
||||
// Remember the previous frame
|
||||
aPrevFrame = frame;
|
||||
frame->GetNextSibling(frame);
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
nsresult
|
||||
nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
|
||||
nsIFrame* aFrame,
|
||||
nsIStyleContext* aStyleContext,
|
||||
PRBool aForce)
|
||||
{
|
||||
nsIView* view;
|
||||
aFrame->GetView(view);
|
||||
if (nsnull == view) {
|
||||
// We don't yet have a view; see if we need a view
|
||||
|
||||
// See if the opacity is not the same as the geometric parent
|
||||
// frames opacity.
|
||||
if (!aForce) {
|
||||
nsIFrame* parent;
|
||||
aFrame->GetGeometricParent(parent);
|
||||
if (nsnull != parent) {
|
||||
// Get my nsStyleColor
|
||||
const nsStyleColor* myColor = (const nsStyleColor*)
|
||||
aStyleContext->GetStyleData(eStyleStruct_Color);
|
||||
|
||||
// Get parent's nsStyleColor
|
||||
const nsStyleColor* parentColor;
|
||||
parent->GetStyleData(eStyleStruct_Color,
|
||||
(const nsStyleStruct*&)parentColor);
|
||||
|
||||
// If the opacities are different then I need a view
|
||||
if (myColor->mOpacity != parentColor->mOpacity) {
|
||||
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
||||
("nsHTMLContainerFrame::CreateViewForFrame: frame=%p opacity=%g parentOpacity=%g",
|
||||
aFrame, myColor->mOpacity, parentColor->mOpacity));
|
||||
aForce = PR_TRUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// See if the frame is being relatively positioned
|
||||
if (!aForce) {
|
||||
const nsStylePosition* position = (const nsStylePosition*)
|
||||
aStyleContext->GetStyleData(eStyleStruct_Position);
|
||||
if (NS_STYLE_POSITION_RELATIVE == position->mPosition) {
|
||||
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
||||
("nsHTMLContainerFrame::CreateViewForFrame: frame=%p relatively positioned",
|
||||
aFrame));
|
||||
aForce = PR_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
if (aForce) {
|
||||
// Create a view
|
||||
nsIFrame* parent;
|
||||
nsIView* view;
|
||||
|
||||
aFrame->GetParentWithView(parent);
|
||||
NS_ASSERTION(parent, "GetParentWithView failed");
|
||||
nsIView* parView;
|
||||
|
||||
parent->GetView(parView);
|
||||
NS_ASSERTION(parView, "no parent with view");
|
||||
|
||||
// Create a view
|
||||
static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
|
||||
static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
|
||||
|
||||
nsresult result = nsRepository::CreateInstance(kViewCID,
|
||||
nsnull,
|
||||
kIViewIID,
|
||||
(void **)&view);
|
||||
if (NS_OK == result) {
|
||||
nsIView* rootView = parView;
|
||||
nsIViewManager* viewManager;
|
||||
rootView->GetViewManager(viewManager);
|
||||
|
||||
// Initialize the view
|
||||
NS_ASSERTION(nsnull != viewManager, "null view manager");
|
||||
|
||||
nsRect bounds;
|
||||
aFrame->GetRect(bounds);
|
||||
view->Init(viewManager, bounds, rootView);
|
||||
viewManager->InsertChild(rootView, view, 0);
|
||||
|
||||
NS_RELEASE(viewManager);
|
||||
}
|
||||
|
||||
// Remember our view
|
||||
aFrame->SetView(view);
|
||||
|
||||
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
||||
("nsHTMLContainerFrame::CreateViewForFrame: frame=%p view=%p",
|
||||
aFrame));
|
||||
return result;
|
||||
}
|
||||
}
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
@ -54,18 +54,29 @@ public:
|
||||
nsIContent* aChild,
|
||||
PRInt32 aIndexInParent);
|
||||
|
||||
virtual PRBool DeleteNextInFlowsFor(nsIPresContext& aPresContext,
|
||||
nsIFrame* aChild);
|
||||
nsresult WrapFrames(nsIPresContext& aPresContext,
|
||||
nsIFrame* aPrevFrame, nsIFrame* aFrame);
|
||||
|
||||
nsPlaceholderFrame* CreatePlaceholderFrame(nsIPresContext* aPresContext,
|
||||
nsPlaceholderFrame* CreatePlaceholderFrame(nsIPresContext& aPresContext,
|
||||
nsIFrame* aFloatedFrame);
|
||||
|
||||
// Helper method to create next-in-flows if necessary
|
||||
static nsresult CreateNextInFlow(nsIPresContext& aPresContext,
|
||||
nsIFrame* aOuterFrame,
|
||||
nsIFrame* aFrame,
|
||||
nsIFrame*& aNextInFlowResult);
|
||||
|
||||
// Helper method to wrap views around frames. Used by containers
|
||||
// under special circumstances (can be used by leaf frames as well)
|
||||
static nsresult CreateViewForFrame(nsIPresContext& aPresContext,
|
||||
nsIFrame* aFrame,
|
||||
nsIStyleContext* aStyleContext,
|
||||
PRBool aForce);
|
||||
|
||||
protected:
|
||||
virtual ~nsHTMLContainerFrame();
|
||||
|
||||
virtual PRIntn GetSkipSides() const = 0;
|
||||
|
||||
nsresult ProcessInitialReflow(nsIPresContext* aPresContext);
|
||||
};
|
||||
|
||||
#endif /* nsHTMLContainerFrame_h___ */
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user