void
nsColumnSetFrame::DrainOverflowColumns()
{
// First grab the prev-in-flows overflows and reparent them to this
// frame.
nsColumnSetFrame* prev = static_cast<nsColumnSetFrame*>(GetPrevInFlow());
if (prev) {
nsAutoPtr<nsFrameList> overflows(prev->StealOverflowFrames());
if (overflows) {
nsContainerFrame::ReparentFrameViewList(PresContext(), *overflows,
prev, this);
mFrames.InsertFrames(this, nsnull, *overflows);
}
}
// Now pull back our own overflows and append them to our children.
// We don't need to reparent them since we're already their parent.
nsAutoPtr<nsFrameList> overflows(StealOverflowFrames());
if (overflows) {
// We're already the parent for these frames, so no need to set
// their parent again.
mFrames.AppendFrames(nsnull, *overflows);
}
}
void
nsFirstLetterFrame::DrainOverflowFrames(nsPresContext* aPresContext)
{
nsAutoPtr<nsFrameList> overflowFrames;
// Check for an overflow list with our prev-in-flow
nsFirstLetterFrame* prevInFlow = (nsFirstLetterFrame*)GetPrevInFlow();
if (nsnull != prevInFlow) {
overflowFrames = prevInFlow->StealOverflowFrames();
if (overflowFrames) {
NS_ASSERTION(mFrames.IsEmpty(), "bad overflow list");
// When pushing and pulling frames we need to check for whether any
// views need to be reparented.
nsContainerFrame::ReparentFrameViewList(aPresContext, *overflowFrames,
prevInFlow, this);
mFrames.InsertFrames(this, nsnull, *overflowFrames);
}
}
// It's also possible that we have an overflow list for ourselves
overflowFrames = StealOverflowFrames();
if (overflowFrames) {
NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
mFrames.AppendFrames(nsnull, *overflowFrames);
}
// Now repair our first frames style context (since we only reflow
// one frame there is no point in doing any other ones until they
// are reflowed)
nsIFrame* kid = mFrames.FirstChild();
if (kid) {
nsRefPtr<nsStyleContext> sc;
nsIContent* kidContent = kid->GetContent();
if (kidContent) {
NS_ASSERTION(kidContent->IsNodeOfType(nsINode::eTEXT),
"should contain only text nodes");
sc = aPresContext->StyleSet()->ResolveStyleForNonElement(mStyleContext);
if (sc) {
kid->SetStyleContext(sc);
}
}
}
}
NS_IMETHODIMP
nsFirstLineFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (nsnull == aReflowState.mLineLayout) {
return NS_ERROR_INVALID_ARG;
}
nsIFrame* lineContainer = aReflowState.mLineLayout->GetLineContainerFrame();
// Check for an overflow list with our prev-in-flow
nsFirstLineFrame* prevInFlow = (nsFirstLineFrame*)GetPrevInFlow();
if (nsnull != prevInFlow) {
nsAutoPtr<nsFrameList> prevOverflowFrames(prevInFlow->StealOverflowFrames());
if (prevOverflowFrames) {
// Assign all floats to our block if necessary
if (lineContainer && lineContainer->GetPrevContinuation()) {
ReparentFloatsForInlineChild(lineContainer,
prevOverflowFrames->FirstChild(),
PR_TRUE);
}
const nsFrameList::Slice& newFrames =
mFrames.InsertFrames(this, nsnull, *prevOverflowFrames);
ReParentChildListStyle(aPresContext, newFrames, this);
}
}
// It's also possible that we have an overflow list for ourselves
nsAutoPtr<nsFrameList> overflowFrames(StealOverflowFrames());
if (overflowFrames) {
NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
const nsFrameList::Slice& newFrames =
mFrames.AppendFrames(nsnull, *overflowFrames);
ReParentChildListStyle(aPresContext, newFrames, this);
}
// Set our own reflow state (additional state above and beyond
// aReflowState)
InlineReflowState irs;
irs.mPrevFrame = nsnull;
irs.mLineContainer = lineContainer;
irs.mNextInFlow = (nsInlineFrame*) GetNextInFlow();
nsresult rv;
PRBool wasEmpty = mFrames.IsEmpty();
if (wasEmpty) {
// Try to pull over one frame before starting so that we know
// whether we have an anonymous block or not.
PRBool complete;
PullOneFrame(aPresContext, irs, &complete);
}
if (nsnull == GetPrevInFlow()) {
// XXX This is pretty sick, but what we do here is to pull-up, in
// advance, all of the next-in-flows children. We re-resolve their
// style while we are at at it so that when we reflow they have
// the right style.
//
// All of this is so that text-runs reflow properly.
irs.mPrevFrame = mFrames.LastChild();
for (;;) {
PRBool complete;
nsIFrame* frame = PullOneFrame(aPresContext, irs, &complete);
if (!frame) {
break;
}
irs.mPrevFrame = frame;
}
irs.mPrevFrame = nsnull;
}
else {
// XXX do this in the Init method instead
// For continuations, we need to check and see if our style
// context is right. If its the same as the first-in-flow, then
// we need to fix it up (that way :first-line style doesn't leak
// into this continuation since we aren't the first line).
nsFirstLineFrame* first = (nsFirstLineFrame*) GetFirstInFlow();
if (mStyleContext == first->mStyleContext) {
// Fixup our style context and our children. First get the
// proper parent context.
nsStyleContext* parentContext = first->GetParent()->GetStyleContext();
if (parentContext) {
// Create a new style context that is a child of the parent
// style context thus removing the :first-line style. This way
// we behave as if an anonymous (unstyled) span was the child
// of the parent frame.
nsRefPtr<nsStyleContext> newSC;
newSC = aPresContext->StyleSet()->
ResolvePseudoStyleFor(nsnull,
nsCSSAnonBoxes::mozLineFrame, parentContext);
if (newSC) {
// Switch to the new style context.
SetStyleContext(newSC);
// Re-resolve all children
ReParentChildListStyle(aPresContext, mFrames, this);
}
}
}
}
NS_ASSERTION(!aReflowState.mLineLayout->GetInFirstLine(),
"Nested first-line frames? BOGUS");
aReflowState.mLineLayout->SetInFirstLine(PR_TRUE);
rv = ReflowFrames(aPresContext, aReflowState, irs, aMetrics, aStatus);
aReflowState.mLineLayout->SetInFirstLine(PR_FALSE);
// Note: the line layout code will properly compute our overflow state for us
return rv;
}
NS_IMETHODIMP
nsInlineFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsInlineFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aMetrics, aStatus);
if (nsnull == aReflowState.mLineLayout) {
return NS_ERROR_INVALID_ARG;
}
PRBool lazilySetParentPointer = PR_FALSE;
nsIFrame* lineContainer = aReflowState.mLineLayout->GetLineContainerFrame();
// Check for an overflow list with our prev-in-flow
nsInlineFrame* prevInFlow = (nsInlineFrame*)GetPrevInFlow();
if (nsnull != prevInFlow) {
nsAutoPtr<nsFrameList> prevOverflowFrames(prevInFlow->StealOverflowFrames());
if (prevOverflowFrames) {
// When pushing and pulling frames we need to check for whether any
// views need to be reparented.
nsHTMLContainerFrame::ReparentFrameViewList(aPresContext,
*prevOverflowFrames,
prevInFlow, this);
// Check if we should do the lazilySetParentPointer optimization.
// Only do it in simple cases where we're being reflowed for the
// first time, nothing (e.g. bidi resolution) has already given
// us children, and there's no next-in-flow, so all our frames
// will be taken from prevOverflowFrames.
if ((GetStateBits() & NS_FRAME_FIRST_REFLOW) && mFrames.IsEmpty() &&
!GetNextInFlow()) {
// If our child list is empty, just put the new frames into it.
// Note that we don't set the parent pointer for the new frames. Instead wait
// to do this until we actually reflow the frame. If the overflow list contains
// thousands of frames this is a big performance issue (see bug #5588)
mFrames.SetFrames(*prevOverflowFrames);
lazilySetParentPointer = PR_TRUE;
} else {
// Assign all floats to our block if necessary
if (lineContainer && lineContainer->GetPrevContinuation()) {
ReparentFloatsForInlineChild(lineContainer,
prevOverflowFrames->FirstChild(),
PR_TRUE);
}
// Insert the new frames at the beginning of the child list
// and set their parent pointer
mFrames.InsertFrames(this, nsnull, *prevOverflowFrames);
}
}
}
// It's also possible that we have an overflow list for ourselves
#ifdef DEBUG
if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
// If it's our initial reflow, then we should not have an overflow list.
// However, add an assertion in case we get reflowed more than once with
// the initial reflow reason
nsFrameList* overflowFrames = GetOverflowFrames();
NS_ASSERTION(!overflowFrames || overflowFrames->IsEmpty(),
"overflow list is not empty for initial reflow");
}
#endif
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
nsAutoPtr<nsFrameList> overflowFrames(StealOverflowFrames());
if (overflowFrames) {
NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
// Because we lazily set the parent pointer of child frames we get from
// our prev-in-flow's overflow list, it's possible that we have not set
// the parent pointer for these frames.
mFrames.AppendFrames(this, *overflowFrames);
}
}
if (IsFrameTreeTooDeep(aReflowState, aMetrics, aStatus)) {
return NS_OK;
}
// Set our own reflow state (additional state above and beyond
// aReflowState)
InlineReflowState irs;
irs.mPrevFrame = nsnull;
irs.mLineContainer = lineContainer;
irs.mNextInFlow = (nsInlineFrame*) GetNextInFlow();
irs.mSetParentPointer = lazilySetParentPointer;
nsresult rv;
if (mFrames.IsEmpty()) {
// Try to pull over one frame before starting so that we know
// whether we have an anonymous block or not.
PRBool complete;
(void) PullOneFrame(aPresContext, irs, &complete);
}
rv = ReflowFrames(aPresContext, aReflowState, irs, aMetrics, aStatus);
// Note: the line layout code will properly compute our
// overflow-rect state for us.
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
return rv;
}
