1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/generic/nsInlineFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,1130 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/* rendering object for CSS display:inline objects */
1.10 +
1.11 +#include "nsInlineFrame.h"
1.12 +#include "nsLineLayout.h"
1.13 +#include "nsBlockFrame.h"
1.14 +#include "nsPlaceholderFrame.h"
1.15 +#include "nsGkAtoms.h"
1.16 +#include "nsStyleContext.h"
1.17 +#include "nsPresContext.h"
1.18 +#include "nsRenderingContext.h"
1.19 +#include "nsCSSAnonBoxes.h"
1.20 +#include "nsAutoPtr.h"
1.21 +#include "RestyleManager.h"
1.22 +#include "nsDisplayList.h"
1.23 +#include "mozilla/Likely.h"
1.24 +
1.25 +#ifdef DEBUG
1.26 +#undef NOISY_PUSHING
1.27 +#endif
1.28 +
1.29 +using namespace mozilla;
1.30 +using namespace mozilla::layout;
1.31 +
1.32 +
1.33 +//////////////////////////////////////////////////////////////////////
1.34 +
1.35 +// Basic nsInlineFrame methods
1.36 +
1.37 +nsIFrame*
1.38 +NS_NewInlineFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.39 +{
1.40 + return new (aPresShell) nsInlineFrame(aContext);
1.41 +}
1.42 +
1.43 +NS_IMPL_FRAMEARENA_HELPERS(nsInlineFrame)
1.44 +
1.45 +NS_QUERYFRAME_HEAD(nsInlineFrame)
1.46 + NS_QUERYFRAME_ENTRY(nsInlineFrame)
1.47 +NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
1.48 +
1.49 +#ifdef DEBUG_FRAME_DUMP
1.50 +nsresult
1.51 +nsInlineFrame::GetFrameName(nsAString& aResult) const
1.52 +{
1.53 + return MakeFrameName(NS_LITERAL_STRING("Inline"), aResult);
1.54 +}
1.55 +#endif
1.56 +
1.57 +nsIAtom*
1.58 +nsInlineFrame::GetType() const
1.59 +{
1.60 + return nsGkAtoms::inlineFrame;
1.61 +}
1.62 +
1.63 +void
1.64 +nsInlineFrame::InvalidateFrame(uint32_t aDisplayItemKey)
1.65 +{
1.66 + if (IsSVGText()) {
1.67 + nsIFrame* svgTextFrame =
1.68 + nsLayoutUtils::GetClosestFrameOfType(GetParent(),
1.69 + nsGkAtoms::svgTextFrame);
1.70 + svgTextFrame->InvalidateFrame();
1.71 + return;
1.72 + }
1.73 + nsInlineFrameBase::InvalidateFrame(aDisplayItemKey);
1.74 +}
1.75 +
1.76 +void
1.77 +nsInlineFrame::InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey)
1.78 +{
1.79 + if (IsSVGText()) {
1.80 + nsIFrame* svgTextFrame =
1.81 + nsLayoutUtils::GetClosestFrameOfType(GetParent(),
1.82 + nsGkAtoms::svgTextFrame);
1.83 + svgTextFrame->InvalidateFrame();
1.84 + return;
1.85 + }
1.86 + nsInlineFrameBase::InvalidateFrameWithRect(aRect, aDisplayItemKey);
1.87 +}
1.88 +
1.89 +static inline bool
1.90 +IsMarginZero(const nsStyleCoord &aCoord)
1.91 +{
1.92 + return aCoord.GetUnit() == eStyleUnit_Auto ||
1.93 + nsLayoutUtils::IsMarginZero(aCoord);
1.94 +}
1.95 +
1.96 +/* virtual */ bool
1.97 +nsInlineFrame::IsSelfEmpty()
1.98 +{
1.99 +#if 0
1.100 + // I used to think inline frames worked this way, but it seems they
1.101 + // don't. At least not in our codebase.
1.102 + if (GetPresContext()->CompatibilityMode() == eCompatibility_FullStandards) {
1.103 + return false;
1.104 + }
1.105 +#endif
1.106 + const nsStyleMargin* margin = StyleMargin();
1.107 + const nsStyleBorder* border = StyleBorder();
1.108 + const nsStylePadding* padding = StylePadding();
1.109 + // XXX Top and bottom removed, since they shouldn't affect things, but this
1.110 + // doesn't really match with nsLineLayout.cpp's setting of
1.111 + // ZeroEffectiveSpanBox, anymore, so what should this really be?
1.112 + bool haveRight =
1.113 + border->GetComputedBorderWidth(NS_SIDE_RIGHT) != 0 ||
1.114 + !nsLayoutUtils::IsPaddingZero(padding->mPadding.GetRight()) ||
1.115 + !IsMarginZero(margin->mMargin.GetRight());
1.116 + bool haveLeft =
1.117 + border->GetComputedBorderWidth(NS_SIDE_LEFT) != 0 ||
1.118 + !nsLayoutUtils::IsPaddingZero(padding->mPadding.GetLeft()) ||
1.119 + !IsMarginZero(margin->mMargin.GetLeft());
1.120 + if (haveLeft || haveRight) {
1.121 + if (GetStateBits() & NS_FRAME_PART_OF_IBSPLIT) {
1.122 + bool haveStart, haveEnd;
1.123 + if (NS_STYLE_DIRECTION_LTR == StyleVisibility()->mDirection) {
1.124 + haveStart = haveLeft;
1.125 + haveEnd = haveRight;
1.126 + } else {
1.127 + haveStart = haveRight;
1.128 + haveEnd = haveLeft;
1.129 + }
1.130 + // For ib-split frames, ignore things we know we'll skip in GetSkipSides.
1.131 + // XXXbz should we be doing this for non-ib-split frames too, in a more
1.132 + // general way?
1.133 +
1.134 + // Get the first continuation eagerly, as a performance optimization, to
1.135 + // avoid having to get it twice..
1.136 + nsIFrame* firstCont = FirstContinuation();
1.137 + return
1.138 + (!haveStart || firstCont->FrameIsNonFirstInIBSplit()) &&
1.139 + (!haveEnd || firstCont->FrameIsNonLastInIBSplit());
1.140 + }
1.141 + return false;
1.142 + }
1.143 + return true;
1.144 +}
1.145 +
1.146 +bool
1.147 +nsInlineFrame::IsEmpty()
1.148 +{
1.149 + if (!IsSelfEmpty()) {
1.150 + return false;
1.151 + }
1.152 +
1.153 + for (nsIFrame *kid = mFrames.FirstChild(); kid; kid = kid->GetNextSibling()) {
1.154 + if (!kid->IsEmpty())
1.155 + return false;
1.156 + }
1.157 +
1.158 + return true;
1.159 +}
1.160 +
1.161 +nsIFrame::FrameSearchResult
1.162 +nsInlineFrame::PeekOffsetCharacter(bool aForward, int32_t* aOffset,
1.163 + bool aRespectClusters)
1.164 +{
1.165 + // Override the implementation in nsFrame, to skip empty inline frames
1.166 + NS_ASSERTION (aOffset && *aOffset <= 1, "aOffset out of range");
1.167 + int32_t startOffset = *aOffset;
1.168 + if (startOffset < 0)
1.169 + startOffset = 1;
1.170 + if (aForward == (startOffset == 0)) {
1.171 + // We're before the frame and moving forward, or after it and moving backwards:
1.172 + // skip to the other side, but keep going.
1.173 + *aOffset = 1 - startOffset;
1.174 + }
1.175 + return CONTINUE;
1.176 +}
1.177 +
1.178 +void
1.179 +nsInlineFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.180 + const nsRect& aDirtyRect,
1.181 + const nsDisplayListSet& aLists)
1.182 +{
1.183 + BuildDisplayListForInline(aBuilder, aDirtyRect, aLists);
1.184 +
1.185 + // The sole purpose of this is to trigger display of the selection
1.186 + // window for Named Anchors, which don't have any children and
1.187 + // normally don't have any size, but in Editor we use CSS to display
1.188 + // an image to represent this "hidden" element.
1.189 + if (!mFrames.FirstChild()) {
1.190 + DisplaySelectionOverlay(aBuilder, aLists.Content());
1.191 + }
1.192 +}
1.193 +
1.194 +//////////////////////////////////////////////////////////////////////
1.195 +// Reflow methods
1.196 +
1.197 +/* virtual */ void
1.198 +nsInlineFrame::AddInlineMinWidth(nsRenderingContext *aRenderingContext,
1.199 + nsIFrame::InlineMinWidthData *aData)
1.200 +{
1.201 + DoInlineIntrinsicWidth(aRenderingContext, aData, nsLayoutUtils::MIN_WIDTH);
1.202 +}
1.203 +
1.204 +/* virtual */ void
1.205 +nsInlineFrame::AddInlinePrefWidth(nsRenderingContext *aRenderingContext,
1.206 + nsIFrame::InlinePrefWidthData *aData)
1.207 +{
1.208 + DoInlineIntrinsicWidth(aRenderingContext, aData, nsLayoutUtils::PREF_WIDTH);
1.209 +}
1.210 +
1.211 +/* virtual */ nsSize
1.212 +nsInlineFrame::ComputeSize(nsRenderingContext *aRenderingContext,
1.213 + nsSize aCBSize, nscoord aAvailableWidth,
1.214 + nsSize aMargin, nsSize aBorder, nsSize aPadding,
1.215 + uint32_t aFlags)
1.216 +{
1.217 + // Inlines and text don't compute size before reflow.
1.218 + return nsSize(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
1.219 +}
1.220 +
1.221 +nsRect
1.222 +nsInlineFrame::ComputeTightBounds(gfxContext* aContext) const
1.223 +{
1.224 + // be conservative
1.225 + if (StyleContext()->HasTextDecorationLines()) {
1.226 + return GetVisualOverflowRect();
1.227 + }
1.228 + return ComputeSimpleTightBounds(aContext);
1.229 +}
1.230 +
1.231 +void
1.232 +nsInlineFrame::ReparentFloatsForInlineChild(nsIFrame* aOurLineContainer,
1.233 + nsIFrame* aFrame,
1.234 + bool aReparentSiblings)
1.235 +{
1.236 + // XXXbz this would be better if it took a nsFrameList or a frame
1.237 + // list slice....
1.238 + NS_ASSERTION(aOurLineContainer->GetNextContinuation() ||
1.239 + aOurLineContainer->GetPrevContinuation(),
1.240 + "Don't call this when we have no continuation, it's a waste");
1.241 + if (!aFrame) {
1.242 + NS_ASSERTION(aReparentSiblings, "Why did we get called?");
1.243 + return;
1.244 + }
1.245 +
1.246 + nsIFrame* ancestor = aFrame;
1.247 + do {
1.248 + ancestor = ancestor->GetParent();
1.249 + if (!ancestor)
1.250 + return;
1.251 + } while (!ancestor->IsFloatContainingBlock());
1.252 +
1.253 + if (ancestor == aOurLineContainer)
1.254 + return;
1.255 +
1.256 + nsBlockFrame* ourBlock = nsLayoutUtils::GetAsBlock(aOurLineContainer);
1.257 + NS_ASSERTION(ourBlock, "Not a block, but broke vertically?");
1.258 + nsBlockFrame* frameBlock = nsLayoutUtils::GetAsBlock(ancestor);
1.259 + NS_ASSERTION(frameBlock, "ancestor not a block");
1.260 +
1.261 + while (true) {
1.262 + ourBlock->ReparentFloats(aFrame, frameBlock, false);
1.263 +
1.264 + if (!aReparentSiblings)
1.265 + return;
1.266 + nsIFrame* next = aFrame->GetNextSibling();
1.267 + if (!next)
1.268 + return;
1.269 + if (next->GetParent() == aFrame->GetParent()) {
1.270 + aFrame = next;
1.271 + continue;
1.272 + }
1.273 + // This is paranoid and will hardly ever get hit ... but we can't actually
1.274 + // trust that the frames in the sibling chain all have the same parent,
1.275 + // because lazy reparenting may be going on. If we find a different
1.276 + // parent we need to redo our analysis.
1.277 + ReparentFloatsForInlineChild(aOurLineContainer, next, aReparentSiblings);
1.278 + return;
1.279 + }
1.280 +}
1.281 +
1.282 +static void
1.283 +ReparentChildListStyle(nsPresContext* aPresContext,
1.284 + const nsFrameList::Slice& aFrames,
1.285 + nsIFrame* aParentFrame)
1.286 +{
1.287 + RestyleManager* restyleManager = aPresContext->RestyleManager();
1.288 +
1.289 + for (nsFrameList::Enumerator e(aFrames); !e.AtEnd(); e.Next()) {
1.290 + NS_ASSERTION(e.get()->GetParent() == aParentFrame, "Bogus parentage");
1.291 + restyleManager->ReparentStyleContext(e.get());
1.292 + nsLayoutUtils::MarkDescendantsDirty(e.get());
1.293 + }
1.294 +}
1.295 +
1.296 +nsresult
1.297 +nsInlineFrame::Reflow(nsPresContext* aPresContext,
1.298 + nsHTMLReflowMetrics& aMetrics,
1.299 + const nsHTMLReflowState& aReflowState,
1.300 + nsReflowStatus& aStatus)
1.301 +{
1.302 + DO_GLOBAL_REFLOW_COUNT("nsInlineFrame");
1.303 + DISPLAY_REFLOW(aPresContext, this, aReflowState, aMetrics, aStatus);
1.304 + if (nullptr == aReflowState.mLineLayout) {
1.305 + return NS_ERROR_INVALID_ARG;
1.306 + }
1.307 + if (IsFrameTreeTooDeep(aReflowState, aMetrics, aStatus)) {
1.308 + return NS_OK;
1.309 + }
1.310 +
1.311 + bool lazilySetParentPointer = false;
1.312 +
1.313 + nsIFrame* lineContainer = aReflowState.mLineLayout->LineContainerFrame();
1.314 +
1.315 + // Check for an overflow list with our prev-in-flow
1.316 + nsInlineFrame* prevInFlow = (nsInlineFrame*)GetPrevInFlow();
1.317 + if (prevInFlow) {
1.318 + AutoFrameListPtr prevOverflowFrames(aPresContext,
1.319 + prevInFlow->StealOverflowFrames());
1.320 + if (prevOverflowFrames) {
1.321 + // When pushing and pulling frames we need to check for whether any
1.322 + // views need to be reparented.
1.323 + nsContainerFrame::ReparentFrameViewList(*prevOverflowFrames, prevInFlow,
1.324 + this);
1.325 +
1.326 + // Check if we should do the lazilySetParentPointer optimization.
1.327 + // Only do it in simple cases where we're being reflowed for the
1.328 + // first time, nothing (e.g. bidi resolution) has already given
1.329 + // us children, and there's no next-in-flow, so all our frames
1.330 + // will be taken from prevOverflowFrames.
1.331 + if ((GetStateBits() & NS_FRAME_FIRST_REFLOW) && mFrames.IsEmpty() &&
1.332 + !GetNextInFlow()) {
1.333 + // If our child list is empty, just put the new frames into it.
1.334 + // Note that we don't set the parent pointer for the new frames. Instead wait
1.335 + // to do this until we actually reflow the frame. If the overflow list contains
1.336 + // thousands of frames this is a big performance issue (see bug #5588)
1.337 + mFrames.SetFrames(*prevOverflowFrames);
1.338 + lazilySetParentPointer = true;
1.339 + } else {
1.340 + // Assign all floats to our block if necessary
1.341 + if (lineContainer && lineContainer->GetPrevContinuation()) {
1.342 + ReparentFloatsForInlineChild(lineContainer,
1.343 + prevOverflowFrames->FirstChild(),
1.344 + true);
1.345 + }
1.346 + // Insert the new frames at the beginning of the child list
1.347 + // and set their parent pointer
1.348 + const nsFrameList::Slice& newFrames =
1.349 + mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
1.350 + // If our prev in flow was under the first continuation of a first-line
1.351 + // frame then we need to reparent the style contexts to remove the
1.352 + // the special first-line styling. In the lazilySetParentPointer case
1.353 + // we reparent the style contexts when we set their parents in
1.354 + // nsInlineFrame::ReflowFrames and nsInlineFrame::ReflowInlineFrame.
1.355 + if (aReflowState.mLineLayout->GetInFirstLine()) {
1.356 + ReparentChildListStyle(aPresContext, newFrames, this);
1.357 + }
1.358 + }
1.359 + }
1.360 + }
1.361 +
1.362 + // It's also possible that we have an overflow list for ourselves
1.363 +#ifdef DEBUG
1.364 + if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
1.365 + // If it's our initial reflow, then we should not have an overflow list.
1.366 + // However, add an assertion in case we get reflowed more than once with
1.367 + // the initial reflow reason
1.368 + nsFrameList* overflowFrames = GetOverflowFrames();
1.369 + NS_ASSERTION(!overflowFrames || overflowFrames->IsEmpty(),
1.370 + "overflow list is not empty for initial reflow");
1.371 + }
1.372 +#endif
1.373 + if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
1.374 + DrainFlags flags =
1.375 + lazilySetParentPointer ? eDontReparentFrames : DrainFlags(0);
1.376 + if (aReflowState.mLineLayout->GetInFirstLine()) {
1.377 + flags = DrainFlags(flags | eInFirstLine);
1.378 + }
1.379 + DrainSelfOverflowListInternal(flags, lineContainer);
1.380 + }
1.381 +
1.382 + // Set our own reflow state (additional state above and beyond
1.383 + // aReflowState)
1.384 + InlineReflowState irs;
1.385 + irs.mPrevFrame = nullptr;
1.386 + irs.mLineContainer = lineContainer;
1.387 + irs.mLineLayout = aReflowState.mLineLayout;
1.388 + irs.mNextInFlow = (nsInlineFrame*) GetNextInFlow();
1.389 + irs.mSetParentPointer = lazilySetParentPointer;
1.390 +
1.391 + nsresult rv;
1.392 + if (mFrames.IsEmpty()) {
1.393 + // Try to pull over one frame before starting so that we know
1.394 + // whether we have an anonymous block or not.
1.395 + bool complete;
1.396 + (void) PullOneFrame(aPresContext, irs, &complete);
1.397 + }
1.398 +
1.399 + rv = ReflowFrames(aPresContext, aReflowState, irs, aMetrics, aStatus);
1.400 +
1.401 + ReflowAbsoluteFrames(aPresContext, aMetrics, aReflowState, aStatus);
1.402 +
1.403 + // Note: the line layout code will properly compute our
1.404 + // overflow-rect state for us.
1.405 +
1.406 + NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
1.407 + return rv;
1.408 +}
1.409 +
1.410 +bool
1.411 +nsInlineFrame::DrainSelfOverflowListInternal(DrainFlags aFlags,
1.412 + nsIFrame* aLineContainer)
1.413 +{
1.414 + AutoFrameListPtr overflowFrames(PresContext(), StealOverflowFrames());
1.415 + if (overflowFrames) {
1.416 + NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
1.417 + // The frames on our own overflowlist may have been pushed by a
1.418 + // previous lazilySetParentPointer Reflow so we need to ensure the
1.419 + // correct parent pointer. This is sometimes skipped by Reflow.
1.420 + if (!(aFlags & eDontReparentFrames)) {
1.421 + nsIFrame* firstChild = overflowFrames->FirstChild();
1.422 + if (aLineContainer && aLineContainer->GetPrevContinuation()) {
1.423 + ReparentFloatsForInlineChild(aLineContainer, firstChild, true);
1.424 + }
1.425 + const bool inFirstLine = (aFlags & eInFirstLine);
1.426 + RestyleManager* restyleManager = PresContext()->RestyleManager();
1.427 + for (nsIFrame* f = firstChild; f; f = f->GetNextSibling()) {
1.428 + f->SetParent(this);
1.429 + if (inFirstLine) {
1.430 + restyleManager->ReparentStyleContext(f);
1.431 + nsLayoutUtils::MarkDescendantsDirty(f);
1.432 + }
1.433 + }
1.434 + }
1.435 + bool result = !overflowFrames->IsEmpty();
1.436 + mFrames.AppendFrames(nullptr, *overflowFrames);
1.437 + return result;
1.438 + }
1.439 + return false;
1.440 +}
1.441 +
1.442 +/* virtual */ bool
1.443 +nsInlineFrame::DrainSelfOverflowList()
1.444 +{
1.445 + nsIFrame* lineContainer = nsLayoutUtils::FindNearestBlockAncestor(this);
1.446 + // Add the eInFirstLine flag if we have a ::first-line ancestor frame.
1.447 + // No need to look further than the nearest line container though.
1.448 + DrainFlags flags = DrainFlags(0);
1.449 + for (nsIFrame* p = GetParent(); p != lineContainer; p = p->GetParent()) {
1.450 + if (p->GetType() == nsGkAtoms::lineFrame) {
1.451 + flags = DrainFlags(flags | eInFirstLine);
1.452 + break;
1.453 + }
1.454 + }
1.455 + return DrainSelfOverflowListInternal(flags, lineContainer);
1.456 +}
1.457 +
1.458 +/* virtual */ bool
1.459 +nsInlineFrame::CanContinueTextRun() const
1.460 +{
1.461 + // We can continue a text run through an inline frame
1.462 + return true;
1.463 +}
1.464 +
1.465 +/* virtual */ void
1.466 +nsInlineFrame::PullOverflowsFromPrevInFlow()
1.467 +{
1.468 + nsInlineFrame* prevInFlow = static_cast<nsInlineFrame*>(GetPrevInFlow());
1.469 + if (prevInFlow) {
1.470 + nsPresContext* presContext = PresContext();
1.471 + AutoFrameListPtr prevOverflowFrames(presContext,
1.472 + prevInFlow->StealOverflowFrames());
1.473 + if (prevOverflowFrames) {
1.474 + // Assume that our prev-in-flow has the same line container that we do.
1.475 + nsContainerFrame::ReparentFrameViewList(*prevOverflowFrames, prevInFlow,
1.476 + this);
1.477 + mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
1.478 + }
1.479 + }
1.480 +}
1.481 +
1.482 +nsresult
1.483 +nsInlineFrame::ReflowFrames(nsPresContext* aPresContext,
1.484 + const nsHTMLReflowState& aReflowState,
1.485 + InlineReflowState& irs,
1.486 + nsHTMLReflowMetrics& aMetrics,
1.487 + nsReflowStatus& aStatus)
1.488 +{
1.489 + nsresult rv = NS_OK;
1.490 + aStatus = NS_FRAME_COMPLETE;
1.491 +
1.492 + nsLineLayout* lineLayout = aReflowState.mLineLayout;
1.493 + bool inFirstLine = aReflowState.mLineLayout->GetInFirstLine();
1.494 + RestyleManager* restyleManager = aPresContext->RestyleManager();
1.495 + WritingMode wm = aReflowState.GetWritingMode();
1.496 + nscoord startEdge = 0;
1.497 + // Don't offset by our start borderpadding if we have a prev continuation or
1.498 + // if we're in a part of an {ib} split other than the first one.
1.499 + if (!GetPrevContinuation() && !FrameIsNonFirstInIBSplit()) {
1.500 + startEdge = aReflowState.ComputedLogicalBorderPadding().IStart(wm);
1.501 + }
1.502 + nscoord availableISize = aReflowState.AvailableISize();
1.503 + NS_ASSERTION(availableISize != NS_UNCONSTRAINEDSIZE,
1.504 + "should no longer use available widths");
1.505 + // Subtract off inline axis border+padding from availableISize
1.506 + availableISize -= startEdge;
1.507 + availableISize -= aReflowState.ComputedLogicalBorderPadding().IEnd(wm);
1.508 + lineLayout->BeginSpan(this, &aReflowState, startEdge,
1.509 + startEdge + availableISize, &mBaseline);
1.510 +
1.511 + // First reflow our principal children.
1.512 + nsIFrame* frame = mFrames.FirstChild();
1.513 + bool done = false;
1.514 + while (frame) {
1.515 + // Check if we should lazily set the child frame's parent pointer.
1.516 + if (irs.mSetParentPointer) {
1.517 + bool havePrevBlock =
1.518 + irs.mLineContainer && irs.mLineContainer->GetPrevContinuation();
1.519 + nsIFrame* child = frame;
1.520 + do {
1.521 + // If our block is the first in flow, then any floats under the pulled
1.522 + // frame must already belong to our block.
1.523 + if (havePrevBlock) {
1.524 + // This has to happen before we update frame's parent; we need to
1.525 + // know frame's ancestry under its old block.
1.526 + // The blockChildren.ContainsFrame check performed by
1.527 + // ReparentFloatsForInlineChild here may be slow, but we can't
1.528 + // easily avoid it because we don't know where 'frame' originally
1.529 + // came from. If we really really have to optimize this we could
1.530 + // cache whether frame->GetParent() is under its containing blocks
1.531 + // overflowList or not.
1.532 + ReparentFloatsForInlineChild(irs.mLineContainer, child, false);
1.533 + }
1.534 + child->SetParent(this);
1.535 + if (inFirstLine) {
1.536 + restyleManager->ReparentStyleContext(child);
1.537 + nsLayoutUtils::MarkDescendantsDirty(child);
1.538 + }
1.539 + // We also need to do the same for |frame|'s next-in-flows that are in
1.540 + // the sibling list. Otherwise, if we reflow |frame| and it's complete
1.541 + // we'll crash when trying to delete its next-in-flow.
1.542 + // This scenario doesn't happen often, but it can happen.
1.543 + nsIFrame* nextSibling = child->GetNextSibling();
1.544 + child = child->GetNextInFlow();
1.545 + if (MOZ_UNLIKELY(child)) {
1.546 + while (child != nextSibling && nextSibling) {
1.547 + nextSibling = nextSibling->GetNextSibling();
1.548 + }
1.549 + if (!nextSibling) {
1.550 + child = nullptr;
1.551 + }
1.552 + }
1.553 + MOZ_ASSERT(!child || mFrames.ContainsFrame(child));
1.554 + } while (child);
1.555 +
1.556 + // Fix the parent pointer for ::first-letter child frame next-in-flows,
1.557 + // so nsFirstLetterFrame::Reflow can destroy them safely (bug 401042).
1.558 + nsIFrame* realFrame = nsPlaceholderFrame::GetRealFrameFor(frame);
1.559 + if (realFrame->GetType() == nsGkAtoms::letterFrame) {
1.560 + nsIFrame* child = realFrame->GetFirstPrincipalChild();
1.561 + if (child) {
1.562 + NS_ASSERTION(child->GetType() == nsGkAtoms::textFrame,
1.563 + "unexpected frame type");
1.564 + nsIFrame* nextInFlow = child->GetNextInFlow();
1.565 + for ( ; nextInFlow; nextInFlow = nextInFlow->GetNextInFlow()) {
1.566 + NS_ASSERTION(nextInFlow->GetType() == nsGkAtoms::textFrame,
1.567 + "unexpected frame type");
1.568 + if (mFrames.ContainsFrame(nextInFlow)) {
1.569 + nextInFlow->SetParent(this);
1.570 + if (inFirstLine) {
1.571 + restyleManager->ReparentStyleContext(nextInFlow);
1.572 + nsLayoutUtils::MarkDescendantsDirty(nextInFlow);
1.573 + }
1.574 + }
1.575 + else {
1.576 +#ifdef DEBUG
1.577 + // Once we find a next-in-flow that isn't ours none of the
1.578 + // remaining next-in-flows should be either.
1.579 + for ( ; nextInFlow; nextInFlow = nextInFlow->GetNextInFlow()) {
1.580 + NS_ASSERTION(!mFrames.ContainsFrame(nextInFlow),
1.581 + "unexpected letter frame flow");
1.582 + }
1.583 +#endif
1.584 + break;
1.585 + }
1.586 + }
1.587 + }
1.588 + }
1.589 + }
1.590 + MOZ_ASSERT(frame->GetParent() == this);
1.591 +
1.592 + if (!done) {
1.593 + bool reflowingFirstLetter = lineLayout->GetFirstLetterStyleOK();
1.594 + rv = ReflowInlineFrame(aPresContext, aReflowState, irs, frame, aStatus);
1.595 + done = NS_FAILED(rv) ||
1.596 + NS_INLINE_IS_BREAK(aStatus) ||
1.597 + (!reflowingFirstLetter && NS_FRAME_IS_NOT_COMPLETE(aStatus));
1.598 + if (done) {
1.599 + if (!irs.mSetParentPointer) {
1.600 + break;
1.601 + }
1.602 + // Keep reparenting the remaining siblings, but don't reflow them.
1.603 + nsFrameList* pushedFrames = GetOverflowFrames();
1.604 + if (pushedFrames && pushedFrames->FirstChild() == frame) {
1.605 + // Don't bother if |frame| was pushed to our overflow list.
1.606 + break;
1.607 + }
1.608 + } else {
1.609 + irs.mPrevFrame = frame;
1.610 + }
1.611 + }
1.612 + frame = frame->GetNextSibling();
1.613 + }
1.614 +
1.615 + // Attempt to pull frames from our next-in-flow until we can't
1.616 + if (!done && GetNextInFlow()) {
1.617 + while (true) {
1.618 + bool reflowingFirstLetter = lineLayout->GetFirstLetterStyleOK();
1.619 + bool isComplete;
1.620 + if (!frame) { // Could be non-null if we pulled a first-letter frame and
1.621 + // it created a continuation, since we don't push those.
1.622 + frame = PullOneFrame(aPresContext, irs, &isComplete);
1.623 + }
1.624 +#ifdef NOISY_PUSHING
1.625 + printf("%p pulled up %p\n", this, frame);
1.626 +#endif
1.627 + if (nullptr == frame) {
1.628 + if (!isComplete) {
1.629 + aStatus = NS_FRAME_NOT_COMPLETE;
1.630 + }
1.631 + break;
1.632 + }
1.633 + rv = ReflowInlineFrame(aPresContext, aReflowState, irs, frame, aStatus);
1.634 + if (NS_FAILED(rv) ||
1.635 + NS_INLINE_IS_BREAK(aStatus) ||
1.636 + (!reflowingFirstLetter && NS_FRAME_IS_NOT_COMPLETE(aStatus))) {
1.637 + break;
1.638 + }
1.639 + irs.mPrevFrame = frame;
1.640 + frame = frame->GetNextSibling();
1.641 + }
1.642 + }
1.643 +
1.644 + NS_ASSERTION(!NS_FRAME_IS_COMPLETE(aStatus) || !GetOverflowFrames(),
1.645 + "We can't be complete AND have overflow frames!");
1.646 +
1.647 + // If after reflowing our children they take up no area then make
1.648 + // sure that we don't either.
1.649 + //
1.650 + // Note: CSS demands that empty inline elements still affect the
1.651 + // line-height calculations. However, continuations of an inline
1.652 + // that are empty we force to empty so that things like collapsed
1.653 + // whitespace in an inline element don't affect the line-height.
1.654 + aMetrics.ISize() = lineLayout->EndSpan(this);
1.655 +
1.656 + // Compute final width.
1.657 +
1.658 + // Make sure to not include our start border and padding if we have a prev
1.659 + // continuation or if we're in a part of an {ib} split other than the first
1.660 + // one.
1.661 + if (!GetPrevContinuation() && !FrameIsNonFirstInIBSplit()) {
1.662 + aMetrics.ISize() += aReflowState.ComputedLogicalBorderPadding().IStart(wm);
1.663 + }
1.664 +
1.665 + /*
1.666 + * We want to only apply the end border and padding if we're the last
1.667 + * continuation and either not in an {ib} split or the last part of it. To
1.668 + * be the last continuation we have to be complete (so that we won't get a
1.669 + * next-in-flow) and have no non-fluid continuations on our continuation
1.670 + * chain.
1.671 + */
1.672 + if (NS_FRAME_IS_COMPLETE(aStatus) &&
1.673 + !LastInFlow()->GetNextContinuation() &&
1.674 + !FrameIsNonLastInIBSplit()) {
1.675 + aMetrics.Width() += aReflowState.ComputedLogicalBorderPadding().IEnd(wm);
1.676 + }
1.677 +
1.678 + nsRefPtr<nsFontMetrics> fm;
1.679 + float inflation = nsLayoutUtils::FontSizeInflationFor(this);
1.680 + nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fm), inflation);
1.681 + aReflowState.rendContext->SetFont(fm);
1.682 +
1.683 + if (fm) {
1.684 + // Compute final height of the frame.
1.685 + //
1.686 + // Do things the standard css2 way -- though it's hard to find it
1.687 + // in the css2 spec! It's actually found in the css1 spec section
1.688 + // 4.4 (you will have to read between the lines to really see
1.689 + // it).
1.690 + //
1.691 + // The height of our box is the sum of our font size plus the top
1.692 + // and bottom border and padding. The height of children do not
1.693 + // affect our height.
1.694 + aMetrics.SetTopAscent(fm->MaxAscent());
1.695 + aMetrics.Height() = fm->MaxHeight();
1.696 + } else {
1.697 + NS_WARNING("Cannot get font metrics - defaulting sizes to 0");
1.698 + aMetrics.SetTopAscent(aMetrics.Height() = 0);
1.699 + }
1.700 + aMetrics.SetTopAscent(aMetrics.TopAscent() + aReflowState.ComputedPhysicalBorderPadding().top);
1.701 + aMetrics.Height() += aReflowState.ComputedPhysicalBorderPadding().top +
1.702 + aReflowState.ComputedPhysicalBorderPadding().bottom;
1.703 +
1.704 + // For now our overflow area is zero. The real value will be
1.705 + // computed in |nsLineLayout::RelativePositionFrames|.
1.706 + aMetrics.mOverflowAreas.Clear();
1.707 +
1.708 +#ifdef NOISY_FINAL_SIZE
1.709 + ListTag(stdout);
1.710 + printf(": metrics=%d,%d ascent=%d\n",
1.711 + aMetrics.Width(), aMetrics.Height(), aMetrics.TopAscent());
1.712 +#endif
1.713 +
1.714 + return rv;
1.715 +}
1.716 +
1.717 +nsresult
1.718 +nsInlineFrame::ReflowInlineFrame(nsPresContext* aPresContext,
1.719 + const nsHTMLReflowState& aReflowState,
1.720 + InlineReflowState& irs,
1.721 + nsIFrame* aFrame,
1.722 + nsReflowStatus& aStatus)
1.723 +{
1.724 + nsLineLayout* lineLayout = aReflowState.mLineLayout;
1.725 + bool reflowingFirstLetter = lineLayout->GetFirstLetterStyleOK();
1.726 + bool pushedFrame;
1.727 + nsresult rv =
1.728 + lineLayout->ReflowFrame(aFrame, aStatus, nullptr, pushedFrame);
1.729 +
1.730 + if (NS_FAILED(rv)) {
1.731 + return rv;
1.732 + }
1.733 +
1.734 + if (NS_INLINE_IS_BREAK_BEFORE(aStatus)) {
1.735 + if (aFrame != mFrames.FirstChild()) {
1.736 + // Change break-before status into break-after since we have
1.737 + // already placed at least one child frame. This preserves the
1.738 + // break-type so that it can be propagated upward.
1.739 + aStatus = NS_FRAME_NOT_COMPLETE |
1.740 + NS_INLINE_BREAK | NS_INLINE_BREAK_AFTER |
1.741 + (aStatus & NS_INLINE_BREAK_TYPE_MASK);
1.742 + PushFrames(aPresContext, aFrame, irs.mPrevFrame, irs);
1.743 + }
1.744 + else {
1.745 + // Preserve reflow status when breaking-before our first child
1.746 + // and propagate it upward without modification.
1.747 + }
1.748 + return NS_OK;
1.749 + }
1.750 +
1.751 + // Create a next-in-flow if needed.
1.752 + if (!NS_FRAME_IS_FULLY_COMPLETE(aStatus)) {
1.753 + nsIFrame* newFrame;
1.754 + rv = CreateNextInFlow(aFrame, newFrame);
1.755 + if (NS_FAILED(rv)) {
1.756 + return rv;
1.757 + }
1.758 + }
1.759 +
1.760 + if (NS_INLINE_IS_BREAK_AFTER(aStatus)) {
1.761 + nsIFrame* nextFrame = aFrame->GetNextSibling();
1.762 + if (nextFrame) {
1.763 + NS_FRAME_SET_INCOMPLETE(aStatus);
1.764 + PushFrames(aPresContext, nextFrame, aFrame, irs);
1.765 + }
1.766 + else {
1.767 + // We must return an incomplete status if there are more child
1.768 + // frames remaining in a next-in-flow that follows this frame.
1.769 + nsInlineFrame* nextInFlow = static_cast<nsInlineFrame*>(GetNextInFlow());
1.770 + while (nextInFlow) {
1.771 + if (nextInFlow->mFrames.NotEmpty()) {
1.772 + NS_FRAME_SET_INCOMPLETE(aStatus);
1.773 + break;
1.774 + }
1.775 + nextInFlow = static_cast<nsInlineFrame*>(nextInFlow->GetNextInFlow());
1.776 + }
1.777 + }
1.778 + return NS_OK;
1.779 + }
1.780 +
1.781 + if (!NS_FRAME_IS_FULLY_COMPLETE(aStatus) && !reflowingFirstLetter) {
1.782 + nsIFrame* nextFrame = aFrame->GetNextSibling();
1.783 + if (nextFrame) {
1.784 + PushFrames(aPresContext, nextFrame, aFrame, irs);
1.785 + }
1.786 + }
1.787 + return NS_OK;
1.788 +}
1.789 +
1.790 +nsIFrame*
1.791 +nsInlineFrame::PullOneFrame(nsPresContext* aPresContext,
1.792 + InlineReflowState& irs,
1.793 + bool* aIsComplete)
1.794 +{
1.795 + bool isComplete = true;
1.796 +
1.797 + nsIFrame* frame = nullptr;
1.798 + nsInlineFrame* nextInFlow = irs.mNextInFlow;
1.799 + while (nextInFlow) {
1.800 + frame = nextInFlow->mFrames.FirstChild();
1.801 + if (!frame) {
1.802 + // The nextInFlow's principal list has no frames, try its overflow list.
1.803 + nsFrameList* overflowFrames = nextInFlow->GetOverflowFrames();
1.804 + if (overflowFrames) {
1.805 + frame = overflowFrames->RemoveFirstChild();
1.806 + if (overflowFrames->IsEmpty()) {
1.807 + // We're stealing the only frame - delete the overflow list.
1.808 + nextInFlow->DestroyOverflowList();
1.809 + } else {
1.810 + // We leave the remaining frames on the overflow list (rather than
1.811 + // putting them on nextInFlow's principal list) so we don't have to
1.812 + // set up the parent for them.
1.813 + }
1.814 + // ReparentFloatsForInlineChild needs it to be on a child list -
1.815 + // we remove it again below.
1.816 + nextInFlow->mFrames.SetFrames(frame);
1.817 + }
1.818 + }
1.819 +
1.820 + if (frame) {
1.821 + // If our block has no next continuation, then any floats belonging to
1.822 + // the pulled frame must belong to our block already. This check ensures
1.823 + // we do no extra work in the common non-vertical-breaking case.
1.824 + if (irs.mLineContainer && irs.mLineContainer->GetNextContinuation()) {
1.825 + // The blockChildren.ContainsFrame check performed by
1.826 + // ReparentFloatsForInlineChild will be fast because frame's ancestor
1.827 + // will be the first child of its containing block.
1.828 + ReparentFloatsForInlineChild(irs.mLineContainer, frame, false);
1.829 + }
1.830 + nextInFlow->mFrames.RemoveFirstChild();
1.831 + // nsFirstLineFrame::PullOneFrame calls ReparentStyleContext.
1.832 +
1.833 + mFrames.InsertFrame(this, irs.mPrevFrame, frame);
1.834 + isComplete = false;
1.835 + if (irs.mLineLayout) {
1.836 + irs.mLineLayout->SetDirtyNextLine();
1.837 + }
1.838 + nsContainerFrame::ReparentFrameView(frame, nextInFlow, this);
1.839 + break;
1.840 + }
1.841 + nextInFlow = static_cast<nsInlineFrame*>(nextInFlow->GetNextInFlow());
1.842 + irs.mNextInFlow = nextInFlow;
1.843 + }
1.844 +
1.845 + *aIsComplete = isComplete;
1.846 + return frame;
1.847 +}
1.848 +
1.849 +void
1.850 +nsInlineFrame::PushFrames(nsPresContext* aPresContext,
1.851 + nsIFrame* aFromChild,
1.852 + nsIFrame* aPrevSibling,
1.853 + InlineReflowState& aState)
1.854 +{
1.855 + NS_PRECONDITION(aFromChild, "null pointer");
1.856 + NS_PRECONDITION(aPrevSibling, "pushing first child");
1.857 + NS_PRECONDITION(aPrevSibling->GetNextSibling() == aFromChild, "bad prev sibling");
1.858 +
1.859 +#ifdef NOISY_PUSHING
1.860 + printf("%p pushing aFromChild %p, disconnecting from prev sib %p\n",
1.861 + this, aFromChild, aPrevSibling);
1.862 +#endif
1.863 +
1.864 + // Add the frames to our overflow list (let our next in flow drain
1.865 + // our overflow list when it is ready)
1.866 + SetOverflowFrames(mFrames.RemoveFramesAfter(aPrevSibling));
1.867 + if (aState.mLineLayout) {
1.868 + aState.mLineLayout->SetDirtyNextLine();
1.869 + }
1.870 +}
1.871 +
1.872 +
1.873 +//////////////////////////////////////////////////////////////////////
1.874 +
1.875 +int
1.876 +nsInlineFrame::GetLogicalSkipSides(const nsHTMLReflowState* aReflowState) const
1.877 +{
1.878 + int skip = 0;
1.879 + if (!IsFirst()) {
1.880 + nsInlineFrame* prev = (nsInlineFrame*) GetPrevContinuation();
1.881 + if ((GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET) ||
1.882 + (prev && (prev->mRect.height || prev->mRect.width))) {
1.883 + // Prev continuation is not empty therefore we don't render our start
1.884 + // border edge.
1.885 + skip |= LOGICAL_SIDE_I_START;
1.886 + }
1.887 + else {
1.888 + // If the prev continuation is empty, then go ahead and let our start
1.889 + // edge border render.
1.890 + }
1.891 + }
1.892 + if (!IsLast()) {
1.893 + nsInlineFrame* next = (nsInlineFrame*) GetNextContinuation();
1.894 + if ((GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET) ||
1.895 + (next && (next->mRect.height || next->mRect.width))) {
1.896 + // Next continuation is not empty therefore we don't render our end
1.897 + // border edge.
1.898 + skip |= LOGICAL_SIDE_I_END;
1.899 + }
1.900 + else {
1.901 + // If the next continuation is empty, then go ahead and let our end
1.902 + // edge border render.
1.903 + }
1.904 + }
1.905 +
1.906 + if (GetStateBits() & NS_FRAME_PART_OF_IBSPLIT) {
1.907 + // All but the last part of an {ib} split should skip the "end" side (as
1.908 + // determined by this frame's direction) and all but the first part of such
1.909 + // a split should skip the "start" side. But figuring out which part of
1.910 + // the split we are involves getting our first continuation, which might be
1.911 + // expensive. So don't bother if we already have the relevant bits set.
1.912 + if (skip != LOGICAL_SIDES_I_BOTH) {
1.913 + // We're missing one of the skip bits, so check whether we need to set it.
1.914 + // Only get the first continuation once, as an optimization.
1.915 + nsIFrame* firstContinuation = FirstContinuation();
1.916 + if (firstContinuation->FrameIsNonLastInIBSplit()) {
1.917 + skip |= LOGICAL_SIDE_I_END;
1.918 + }
1.919 + if (firstContinuation->FrameIsNonFirstInIBSplit()) {
1.920 + skip |= LOGICAL_SIDE_I_START;
1.921 + }
1.922 + }
1.923 + }
1.924 +
1.925 + return skip;
1.926 +}
1.927 +
1.928 +nscoord
1.929 +nsInlineFrame::GetBaseline() const
1.930 +{
1.931 + return mBaseline;
1.932 +}
1.933 +
1.934 +#ifdef ACCESSIBILITY
1.935 +a11y::AccType
1.936 +nsInlineFrame::AccessibleType()
1.937 +{
1.938 + // Broken image accessibles are created here, because layout
1.939 + // replaces the image or image control frame with an inline frame
1.940 + nsIAtom *tagAtom = mContent->Tag();
1.941 + if (tagAtom == nsGkAtoms::input) // Broken <input type=image ... />
1.942 + return a11y::eHTMLButtonType;
1.943 + if (tagAtom == nsGkAtoms::img) // Create accessible for broken <img>
1.944 + return a11y::eHyperTextType;
1.945 +
1.946 + return a11y::eNoType;
1.947 +}
1.948 +#endif
1.949 +
1.950 +//////////////////////////////////////////////////////////////////////
1.951 +
1.952 +// nsLineFrame implementation
1.953 +
1.954 +nsIFrame*
1.955 +NS_NewFirstLineFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.956 +{
1.957 + return new (aPresShell) nsFirstLineFrame(aContext);
1.958 +}
1.959 +
1.960 +NS_IMPL_FRAMEARENA_HELPERS(nsFirstLineFrame)
1.961 +
1.962 +void
1.963 +nsFirstLineFrame::Init(nsIContent* aContent, nsIFrame* aParent,
1.964 + nsIFrame* aPrevInFlow)
1.965 +{
1.966 + nsInlineFrame::Init(aContent, aParent, aPrevInFlow);
1.967 + if (!aPrevInFlow) {
1.968 + MOZ_ASSERT(StyleContext()->GetPseudo() == nsCSSPseudoElements::firstLine);
1.969 + return;
1.970 + }
1.971 +
1.972 + // This frame is a continuation - fixup the style context if aPrevInFlow
1.973 + // is the first-in-flow (the only one with a ::first-line pseudo).
1.974 + if (aPrevInFlow->StyleContext()->GetPseudo() == nsCSSPseudoElements::firstLine) {
1.975 + MOZ_ASSERT(FirstInFlow() == aPrevInFlow);
1.976 + // Create a new style context that is a child of the parent
1.977 + // style context thus removing the ::first-line style. This way
1.978 + // we behave as if an anonymous (unstyled) span was the child
1.979 + // of the parent frame.
1.980 + nsStyleContext* parentContext = aParent->StyleContext();
1.981 + nsRefPtr<nsStyleContext> newSC = PresContext()->StyleSet()->
1.982 + ResolveAnonymousBoxStyle(nsCSSAnonBoxes::mozLineFrame, parentContext);
1.983 + SetStyleContext(newSC);
1.984 + } else {
1.985 + MOZ_ASSERT(FirstInFlow() != aPrevInFlow);
1.986 + MOZ_ASSERT(aPrevInFlow->StyleContext()->GetPseudo() ==
1.987 + nsCSSAnonBoxes::mozLineFrame);
1.988 + }
1.989 +}
1.990 +
1.991 +#ifdef DEBUG_FRAME_DUMP
1.992 +nsresult
1.993 +nsFirstLineFrame::GetFrameName(nsAString& aResult) const
1.994 +{
1.995 + return MakeFrameName(NS_LITERAL_STRING("Line"), aResult);
1.996 +}
1.997 +#endif
1.998 +
1.999 +nsIAtom*
1.1000 +nsFirstLineFrame::GetType() const
1.1001 +{
1.1002 + return nsGkAtoms::lineFrame;
1.1003 +}
1.1004 +
1.1005 +nsIFrame*
1.1006 +nsFirstLineFrame::PullOneFrame(nsPresContext* aPresContext, InlineReflowState& irs,
1.1007 + bool* aIsComplete)
1.1008 +{
1.1009 + nsIFrame* frame = nsInlineFrame::PullOneFrame(aPresContext, irs, aIsComplete);
1.1010 + if (frame && !GetPrevInFlow()) {
1.1011 + // We are a first-line frame. Fixup the child frames
1.1012 + // style-context that we just pulled.
1.1013 + NS_ASSERTION(frame->GetParent() == this, "Incorrect parent?");
1.1014 + aPresContext->RestyleManager()->ReparentStyleContext(frame);
1.1015 + nsLayoutUtils::MarkDescendantsDirty(frame);
1.1016 + }
1.1017 + return frame;
1.1018 +}
1.1019 +
1.1020 +nsresult
1.1021 +nsFirstLineFrame::Reflow(nsPresContext* aPresContext,
1.1022 + nsHTMLReflowMetrics& aMetrics,
1.1023 + const nsHTMLReflowState& aReflowState,
1.1024 + nsReflowStatus& aStatus)
1.1025 +{
1.1026 + if (nullptr == aReflowState.mLineLayout) {
1.1027 + return NS_ERROR_INVALID_ARG;
1.1028 + }
1.1029 +
1.1030 + nsIFrame* lineContainer = aReflowState.mLineLayout->LineContainerFrame();
1.1031 +
1.1032 + // Check for an overflow list with our prev-in-flow
1.1033 + nsFirstLineFrame* prevInFlow = (nsFirstLineFrame*)GetPrevInFlow();
1.1034 + if (prevInFlow) {
1.1035 + AutoFrameListPtr prevOverflowFrames(aPresContext,
1.1036 + prevInFlow->StealOverflowFrames());
1.1037 + if (prevOverflowFrames) {
1.1038 + // Assign all floats to our block if necessary
1.1039 + if (lineContainer && lineContainer->GetPrevContinuation()) {
1.1040 + ReparentFloatsForInlineChild(lineContainer,
1.1041 + prevOverflowFrames->FirstChild(),
1.1042 + true);
1.1043 + }
1.1044 + const nsFrameList::Slice& newFrames =
1.1045 + mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
1.1046 + ReparentChildListStyle(aPresContext, newFrames, this);
1.1047 + }
1.1048 + }
1.1049 +
1.1050 + // It's also possible that we have an overflow list for ourselves.
1.1051 + DrainSelfOverflowList();
1.1052 +
1.1053 + // Set our own reflow state (additional state above and beyond
1.1054 + // aReflowState)
1.1055 + InlineReflowState irs;
1.1056 + irs.mPrevFrame = nullptr;
1.1057 + irs.mLineContainer = lineContainer;
1.1058 + irs.mLineLayout = aReflowState.mLineLayout;
1.1059 + irs.mNextInFlow = (nsInlineFrame*) GetNextInFlow();
1.1060 +
1.1061 + nsresult rv;
1.1062 + bool wasEmpty = mFrames.IsEmpty();
1.1063 + if (wasEmpty) {
1.1064 + // Try to pull over one frame before starting so that we know
1.1065 + // whether we have an anonymous block or not.
1.1066 + bool complete;
1.1067 + PullOneFrame(aPresContext, irs, &complete);
1.1068 + }
1.1069 +
1.1070 + if (nullptr == GetPrevInFlow()) {
1.1071 + // XXX This is pretty sick, but what we do here is to pull-up, in
1.1072 + // advance, all of the next-in-flows children. We re-resolve their
1.1073 + // style while we are at at it so that when we reflow they have
1.1074 + // the right style.
1.1075 + //
1.1076 + // All of this is so that text-runs reflow properly.
1.1077 + irs.mPrevFrame = mFrames.LastChild();
1.1078 + for (;;) {
1.1079 + bool complete;
1.1080 + nsIFrame* frame = PullOneFrame(aPresContext, irs, &complete);
1.1081 + if (!frame) {
1.1082 + break;
1.1083 + }
1.1084 + irs.mPrevFrame = frame;
1.1085 + }
1.1086 + irs.mPrevFrame = nullptr;
1.1087 + }
1.1088 +
1.1089 + NS_ASSERTION(!aReflowState.mLineLayout->GetInFirstLine(),
1.1090 + "Nested first-line frames? BOGUS");
1.1091 + aReflowState.mLineLayout->SetInFirstLine(true);
1.1092 + rv = ReflowFrames(aPresContext, aReflowState, irs, aMetrics, aStatus);
1.1093 + aReflowState.mLineLayout->SetInFirstLine(false);
1.1094 +
1.1095 + ReflowAbsoluteFrames(aPresContext, aMetrics, aReflowState, aStatus);
1.1096 +
1.1097 + // Note: the line layout code will properly compute our overflow state for us
1.1098 +
1.1099 + return rv;
1.1100 +}
1.1101 +
1.1102 +/* virtual */ void
1.1103 +nsFirstLineFrame::PullOverflowsFromPrevInFlow()
1.1104 +{
1.1105 + nsFirstLineFrame* prevInFlow = static_cast<nsFirstLineFrame*>(GetPrevInFlow());
1.1106 + if (prevInFlow) {
1.1107 + nsPresContext* presContext = PresContext();
1.1108 + AutoFrameListPtr prevOverflowFrames(presContext,
1.1109 + prevInFlow->StealOverflowFrames());
1.1110 + if (prevOverflowFrames) {
1.1111 + // Assume that our prev-in-flow has the same line container that we do.
1.1112 + const nsFrameList::Slice& newFrames =
1.1113 + mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
1.1114 + ReparentChildListStyle(presContext, newFrames, this);
1.1115 + }
1.1116 + }
1.1117 +}
1.1118 +
1.1119 +/* virtual */ bool
1.1120 +nsFirstLineFrame::DrainSelfOverflowList()
1.1121 +{
1.1122 + AutoFrameListPtr overflowFrames(PresContext(), StealOverflowFrames());
1.1123 + if (overflowFrames) {
1.1124 + NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
1.1125 +
1.1126 + bool result = !overflowFrames->IsEmpty();
1.1127 + const nsFrameList::Slice& newFrames =
1.1128 + mFrames.AppendFrames(nullptr, *overflowFrames);
1.1129 + ReparentChildListStyle(PresContext(), newFrames, this);
1.1130 + return result;
1.1131 + }
1.1132 + return false;
1.1133 +}
