RenderObject* RenderObjectChildList::beforePseudoElementRenderer(const RenderObject* owner) const
{
// An anonymous (generated) inline run-in that has PseudoId BEFORE must come from a grandparent.
// Therefore we should skip these generated run-ins when checking our immediate children.
// If we don't find our :before child immediately, then we should check if we own a
// generated inline run-in in the next level of children.
RenderObject* first = const_cast<RenderObject*>(owner);
do {
first = first->firstChild();
// Skip list markers and generated run-ins.
while (first && (first->isListMarker() || (first->isRenderInline() && first->isRunIn())))
first = first->nextInPreOrderAfterChildren(owner);
} while (first && first->isAnonymous() && first->style()->styleType() == NOPSEUDO);
if (!first)
return 0;
if (first->isBeforeContent())
return first;
// Check for a possible generated run-in, using run-in positioning rules.
first = owner->firstChild();
if (!first->isRenderBlock())
return 0;
first = first->firstChild();
// We still need to skip any list markers that could exist before the run-in.
while (first && first->isListMarker())
first = first->nextSibling();
if (first && first->isBeforeContent() && first->isRenderInline() && first->isRunIn())
return first;
return 0;
}
LayoutUnit RenderMathMLUnderOver::baselinePosition(FontBaseline, bool firstLine, LineDirectionMode direction, LinePositionMode linePositionMode) const
{
RenderObject* current = firstChild();
if (!current || linePositionMode == PositionOfInteriorLineBoxes)
return RenderBlock::baselinePosition(AlphabeticBaseline, firstLine, direction, linePositionMode);
LayoutUnit baseline = 0;
switch (m_kind) {
case UnderOver:
case Over:
baseline += getOffsetHeight(current);
current = current->nextSibling();
if (current) {
// actual base
RenderObject* base = current->firstChild();
if (!base || !base->isBoxModelObject())
break;
baseline += toRenderBoxModelObject(base)->baselinePosition(AlphabeticBaseline, firstLine, HorizontalLine, linePositionMode);
// added the negative top margin
baseline += current->style()->marginTop().value();
}
break;
case Under:
RenderObject* base = current->firstChild();
if (base && base->isBoxModelObject())
baseline += toRenderBoxModelObject(base)->baselinePosition(AlphabeticBaseline, true, HorizontalLine);
}
return baseline;
}
void RenderMathMLSubSup::layout()
{
RenderBlock::layout();
if (m_kind != SubSup || !m_scripts)
return;
RenderBoxModelObject* base = this->base();
RenderObject* superscriptWrapper = m_scripts->firstChild();
RenderObject* subscriptWrapper = m_scripts->lastChild();
if (!base || !superscriptWrapper || !subscriptWrapper || superscriptWrapper == subscriptWrapper)
return;
ASSERT(superscriptWrapper->isRenderMathMLBlock());
ASSERT(subscriptWrapper->isRenderMathMLBlock());
RenderObject* superscript = superscriptWrapper->firstChild();
RenderObject* subscript = subscriptWrapper->firstChild();
if (!superscript || !subscript)
return;
LineDirectionMode lineDirection = style()->isHorizontalWritingMode() ? HorizontalLine : VerticalLine;
LayoutUnit baseBaseline = base->baselinePosition(AlphabeticBaseline, true, lineDirection);
LayoutUnit baseExtendUnderBaseline = getBoxModelObjectHeight(base) - baseBaseline;
LayoutUnit axis = style()->fontMetrics().xHeight() / 2;
LayoutUnit superscriptHeight = getBoxModelObjectHeight(superscript);
LayoutUnit subscriptHeight = getBoxModelObjectHeight(subscript);
// Our layout rules are: Don't let the superscript go below the "axis" (half x-height above the
// baseline), or the subscript above the axis. Also, don't let the superscript's top edge be
// below the base's top edge, or the subscript's bottom edge above the base's bottom edge.
//
// FIXME: Check any subscriptshift or superscriptshift attributes, and maybe use more sophisticated
// heuristics from TeX or elsewhere. See https://bugs.webkit.org/show_bug.cgi?id=79274#c5.
// Above we did scriptsStyle->setVerticalAlign(TOP) for mscripts' style, so the superscript's
// top edge will equal the top edge of the base's padding.
LayoutUnit basePaddingTop = superscriptHeight + axis - baseBaseline;
// If basePaddingTop is positive, it's indeed the base's padding-top that we need. If it's negative,
// then we should instead use its absolute value to pad the bottom of the superscript, to get the
// superscript's bottom edge down to the axis. First we compute how much more we need to shift the
// subscript down, once its top edge is at the axis.
LayoutUnit superPaddingBottom = max<LayoutUnit>(baseExtendUnderBaseline + axis - subscriptHeight, 0);
if (basePaddingTop < 0) {
superPaddingBottom += -basePaddingTop;
basePaddingTop = 0;
}
setChildNeedsLayout(true, false);
RenderObject* baseWrapper = firstChild();
baseWrapper->style()->setPaddingTop(Length(basePaddingTop, Fixed));
baseWrapper->setNeedsLayout(true, false);
superscriptWrapper->style()->setPaddingBottom(Length(superPaddingBottom, Fixed));
superscriptWrapper->setNeedsLayout(true, false);
m_scripts->setNeedsLayout(true, false);
RenderBlock::layout();
}
static RenderObject* beforeAfterContainer(RenderObject* container, PseudoId type)
{
if (type == BEFORE) {
// An anonymous (generated) inline run-in that has PseudoId BEFORE must come from a grandparent.
// Therefore we should skip these generated run-ins when checking our immediate children.
// If we don't find our :before child immediately, then we should check if we own a
// generated inline run-in in the next level of children.
RenderObject* first = container;
do {
// Skip list markers and generated run-ins
first = first->firstChild();
while (first && (first->isListMarker() || (first->isRenderInline() && first->isRunIn() && first->isAnonymous())))
first = first->nextSibling();
} while (first && first->isAnonymous() && first->style()->styleType() == NOPSEUDO);
if (!first)
return 0;
if (first->style()->styleType() == type)
return first;
// Check for a possible generated run-in, using run-in positioning rules.
// Skip inlines and floating / positioned blocks, and place as the first child.
first = container->firstChild();
if (!first->isRenderBlock())
return 0;
while (first && first->isFloatingOrPositioned())
first = first->nextSibling();
if (first) {
first = first->firstChild();
// We still need to skip any list markers that could exist before the run-in.
while (first && first->isListMarker())
first = first->nextSibling();
if (first && first->style()->styleType() == type && first->isRenderInline() && first->isRunIn() && first->isAnonymous())
return first;
}
return 0;
}
if (type == AFTER) {
RenderObject* last = container;
do {
last = last->lastChild();
} while (last && last->isAnonymous() && last->style()->styleType() == NOPSEUDO && !last->isListMarker());
if (last && last->style()->styleType() != type)
return 0;
return last;
}
ASSERT_NOT_REACHED();
return 0;
}
int RenderMathMLUnderOver::nonOperatorHeight() const
{
int nonOperators = 0;
for (RenderObject* current = firstChild(); current; current = current->nextSibling()) {
if (current->firstChild() && current->firstChild()->isRenderMathMLBlock()) {
RenderMathMLBlock* block = toRenderMathMLBlock(current->firstChild());
if (!block->isRenderMathMLOperator())
nonOperators += getOffsetHeight(current);
} else
nonOperators += getOffsetHeight(current);
}
return nonOperators;
}
static void write(QTextStream &ts, const RenderObject &o, int indent = 0)
{
writeIndent(ts, indent);
ts << o << "\n";
if (o.isText() && !o.isBR()) {
const RenderText &text = static_cast<const RenderText &>(o);
for (InlineTextBox* box = text.firstTextBox(); box; box = box->nextTextBox()) {
writeIndent(ts, indent+1);
writeTextRun(ts, text, *box);
}
}
for (RenderObject *child = o.firstChild(); child; child = child->nextSibling()) {
if (child->layer()) {
continue;
}
write(ts, *child, indent + 1);
}
if (o.isWidget()) {
QWidget *widget = static_cast<const RenderWidget &>(o).widget();
if (widget && widget->inherits("KHTMLView")) {
KHTMLView *view = static_cast<KHTMLView *>(widget);
RenderObject *root = KWQ(view->part())->renderer();
if (root) {
view->layout();
RenderLayer* l = root->layer();
if (l)
writeLayers(ts, l, l, QRect(l->xPos(), l->yPos(), l->width(), l->height()), indent+1);
}
}
}
}
VisiblePosition RenderContainer::positionForCoordinates(int _x, int _y)
{
// no children...return this render object's element, if there is one, and offset 0
if (!firstChild())
return VisiblePosition(element(), 0, DOWNSTREAM);
// look for the geometrically-closest child and pass off to that child
int min = INT_MAX;
RenderObject *closestRenderer = 0;
for (RenderObject *renderer = firstChild(); renderer; renderer = renderer->nextSibling()) {
if (!renderer->firstChild() && !renderer->isInline() && !renderer->isBlockFlow())
continue;
int absx, absy;
renderer->absolutePosition(absx, absy);
int top = absy + borderTop() + paddingTop();
int bottom = top + renderer->contentHeight();
int left = absx + borderLeft() + paddingLeft();
int right = left + renderer->contentWidth();
int cmp;
cmp = abs(_y - top); if (cmp < min) { closestRenderer = renderer; min = cmp; }
cmp = abs(_y - bottom); if (cmp < min) { closestRenderer = renderer; min = cmp; }
cmp = abs(_x - left); if (cmp < min) { closestRenderer = renderer; min = cmp; }
cmp = abs(_x - right); if (cmp < min) { closestRenderer = renderer; min = cmp; }
}
if (closestRenderer)
return closestRenderer->positionForCoordinates(_x, _y);
return VisiblePosition(element(), 0, DOWNSTREAM);
}
void write(TextStream& ts, const RenderObject& o, int indent)
{
#if ENABLE(SVG)
if (o.isRenderPath()) {
write(ts, *toRenderPath(&o), indent);
return;
}
if (o.isSVGContainer()) {
writeSVGContainer(ts, o, indent);
return;
}
if (o.isSVGRoot()) {
write(ts, *toRenderSVGRoot(&o), indent);
return;
}
if (o.isSVGText()) {
if (!o.isText())
writeSVGText(ts, *toRenderBlock(&o), indent);
else
writeSVGInlineText(ts, *toRenderText(&o), indent);
return;
}
if (o.isSVGImage()) {
writeSVGImage(ts, *toRenderImage(&o), indent);
return;
}
#endif
writeIndent(ts, indent);
ts << o << "\n";
if (o.isText() && !o.isBR()) {
const RenderText& text = *toRenderText(&o);
for (InlineTextBox* box = text.firstTextBox(); box; box = box->nextTextBox()) {
writeIndent(ts, indent + 1);
writeTextRun(ts, text, *box);
}
}
for (RenderObject* child = o.firstChild(); child; child = child->nextSibling()) {
if (child->hasLayer())
continue;
write(ts, *child, indent + 1);
}
if (o.isWidget()) {
Widget* widget = toRenderWidget(&o)->widget();
if (widget && widget->isFrameView()) {
FrameView* view = static_cast<FrameView*>(widget);
RenderView* root = view->frame()->contentRenderer();
if (root) {
view->layout();
RenderLayer* l = root->layer();
if (l)
writeLayers(ts, l, l, IntRect(l->x(), l->y(), l->width(), l->height()), indent + 1);
}
}
}
}
bool isEmptyTableCell(const Node* node)
{
// Returns true IFF the passed in node is one of:
// .) a table cell with no children,
// .) a table cell with a single BR child, and which has no other child renderers, including :before and :after renderers
// .) the BR child of such a table cell
// Find rendered node
while (node && !node->renderer())
node = node->parentNode();
if (!node)
return false;
// Make sure the rendered node is a table cell or <br>.
// If it's a <br>, then the parent node has to be a table cell.
RenderObject* renderer = node->renderer();
if (renderer->isBR()) {
renderer = renderer->parent();
if (!renderer)
return false;
}
if (!renderer->isTableCell())
return false;
// Check that the table cell contains no child renderers except for perhaps a single <br>.
RenderObject* childRenderer = renderer->firstChild();
if (!childRenderer)
return true;
if (!childRenderer->isBR())
return false;
return !childRenderer->nextSibling();
}
QRect RenderCanvas::selectionRect() const
{
RenderObject *r = m_selectionStart;
if (!r)
return QRect();
QRect selectionRect = enclosingPositionedRect(r);
while (r && r != m_selectionEnd)
{
RenderObject* n;
if ( !(n = r->firstChild()) ){
if ( !(n = r->nextSibling()) )
{
n = r->parent();
while (n && !n->nextSibling())
n = n->parent();
if (n)
n = n->nextSibling();
}
}
r = n;
if (r) {
selectionRect = selectionRect.unite(enclosingPositionedRect(r));
}
}
return selectionRect;
}
void RenderListItem::updateMarkerLocation()
{
// Sanity check the location of our marker.
if (m_marker) {
RenderObject* markerPar = m_marker->parent();
RenderObject* lineBoxParent = getParentOfFirstLineBox(this, m_marker);
if (!lineBoxParent) {
// If the marker is currently contained inside an anonymous box,
// then we are the only item in that anonymous box (since no line box
// parent was found). It's ok to just leave the marker where it is
// in this case.
if (markerPar && markerPar->isAnonymousBlock())
lineBoxParent = markerPar;
else
lineBoxParent = this;
}
if (markerPar != lineBoxParent || m_marker->preferredLogicalWidthsDirty()) {
// Removing and adding the marker can trigger repainting in
// containers other than ourselves, so we need to disable LayoutState.
LayoutStateDisabler layoutStateDisabler(view());
updateFirstLetter();
m_marker->remove();
if (!lineBoxParent)
lineBoxParent = this;
lineBoxParent->addChild(m_marker, firstNonMarkerChild(lineBoxParent));
m_marker->updateMarginsAndContent();
// If markerPar is an anonymous block that has lost all its children, destroy it.
if (markerPar && markerPar->isAnonymousBlock() && !markerPar->firstChild() && !toRenderBlock(markerPar)->continuation())
markerPar->destroy();
}
}
}
void RenderMathMLSubSup::stretchToHeight(int height)
{
RenderObject* base = firstChild();
if (!base)
return;
if (base->isRenderMathMLBlock()) {
RenderMathMLBlock* block = toRenderMathMLBlock(base);
block->stretchToHeight(static_cast<int>(gSubSupStretch * height));
}
if (height > 0 && m_kind == SubSup && m_scripts) {
RenderObject* script = m_scripts->firstChild();
if (script) {
// Calculate the script height without the container margins.
RenderObject* top = script;
int topHeight = getBoxModelObjectHeight(top->firstChild());
int topAdjust = topHeight / gTopAdjustDivisor;
top->style()->setMarginTop(Length(-topAdjust, Fixed));
top->style()->setMarginBottom(Length(height - topHeight + topAdjust, Fixed));
if (top->isBoxModelObject()) {
RenderBoxModelObject* topBox = toRenderBoxModelObject(top);
topBox->updateBoxModelInfoFromStyle();
}
m_scripts->setNeedsLayoutAndPrefWidthsRecalc();
m_scripts->markContainingBlocksForLayout();
}
}
updateBoxModelInfoFromStyle();
setNeedsLayoutAndPrefWidthsRecalc();
markContainingBlocksForLayout();
}
static RenderObject* beforeAfterContainer(RenderObject* container, PseudoId type)
{
if (type == BEFORE) {
RenderObject* first = container;
do {
// Skip list markers.
first = first->firstChild();
while (first && first->isListMarker())
first = first->nextSibling();
} while (first && first->isAnonymous() && first->style()->styleType() == NOPSEUDO);
if (first && first->style()->styleType() != type)
return 0;
return first;
}
if (type == AFTER) {
RenderObject* last = container;
do {
last = last->lastChild();
} while (last && last->isAnonymous() && last->style()->styleType() == NOPSEUDO && !last->isListMarker());
if (last && last->style()->styleType() != type)
return 0;
return last;
}
ASSERT_NOT_REACHED();
return 0;
}
void RenderLayerStackingNode::rebuildZOrderLists(OwnPtr<Vector<RenderLayerStackingNode*> >& posZOrderList,
OwnPtr<Vector<RenderLayerStackingNode*> >& negZOrderList, const RenderLayerStackingNode* nodeToForceAsStackingContainer,
CollectLayersBehavior collectLayersBehavior)
{
for (RenderLayer* child = layer()->firstChild(); child; child = child->nextSibling()) {
if (!layer()->reflectionInfo() || layer()->reflectionInfo()->reflectionLayer() != child)
child->stackingNode()->collectLayers(posZOrderList, negZOrderList, nodeToForceAsStackingContainer, collectLayersBehavior);
}
// Sort the two lists.
if (posZOrderList)
std::stable_sort(posZOrderList->begin(), posZOrderList->end(), compareZIndex);
if (negZOrderList)
std::stable_sort(negZOrderList->begin(), negZOrderList->end(), compareZIndex);
// Append layers for top layer elements after normal layer collection, to ensure they are on top regardless of z-indexes.
// The renderers of top layer elements are children of the view, sorted in top layer stacking order.
if (layer()->isRootLayer()) {
RenderObject* view = renderer()->view();
for (RenderObject* child = view->firstChild(); child; child = child->nextSibling()) {
Element* childElement = (child->node() && child->node()->isElementNode()) ? toElement(child->node()) : 0;
if (childElement && childElement->isInTopLayer()) {
RenderLayer* layer = toRenderLayerModelObject(child)->layer();
// Create the buffer if it doesn't exist yet.
if (!posZOrderList)
posZOrderList = adoptPtr(new Vector<RenderLayerStackingNode*>);
posZOrderList->append(layer->stackingNode());
}
}
}
}
void RenderListItem::updateMarkerLocation()
{
// Sanity check the location of our marker.
if (m_marker) {
RenderObject* markerPar = m_marker->parent();
RenderObject* lineBoxParent = getParentOfFirstLineBox(this, m_marker);
if (!lineBoxParent) {
// If the marker is currently contained inside an anonymous box,
// then we are the only item in that anonymous box (since no line box
// parent was found). It's ok to just leave the marker where it is
// in this case.
if (markerPar && markerPar->isAnonymousBlock())
lineBoxParent = markerPar;
else
lineBoxParent = this;
}
if (markerPar != lineBoxParent || !m_marker->minMaxKnown()) {
m_marker->remove();
if (!lineBoxParent)
lineBoxParent = this;
lineBoxParent->addChild(m_marker, lineBoxParent->firstChild());
if (!m_marker->minMaxKnown())
m_marker->calcMinMaxWidth();
recalcMinMaxWidths();
}
}
}
void RenderMathMLUnderOver::stretchToHeight(int height)
{
RenderObject* base = firstChild();
if (!base)
return;
// For over or underover, the base is the sibling of the first child
if (m_kind != Under)
base = base->nextSibling();
if (!base)
return;
// use the child of the row which is the actual base
base = base->firstChild();
if (base && base->isRenderMathMLBlock()) {
RenderMathMLBlock* block = toRenderMathMLBlock(base);
block->stretchToHeight(height);
updateBoxModelInfoFromStyle();
setNeedsLayoutAndPrefWidthsRecalc();
markContainingBlocksForLayout();
}
}
static inline bool findPreviousAndNextAttributes(RenderObject* root, RenderSVGInlineText* locateElement, SVGTextLayoutAttributes*& previous, SVGTextLayoutAttributes*& next)
{
ASSERT(root);
ASSERT(locateElement);
bool stopAfterNext = false;
RenderObject* current = root->firstChild();
while (current) {
if (current->isSVGInlineText()) {
RenderSVGInlineText* text = toRenderSVGInlineText(current);
if (locateElement != text) {
if (stopAfterNext) {
next = text->layoutAttributes();
return true;
}
previous = text->layoutAttributes();
} else {
stopAfterNext = true;
}
} else if (current->isSVGInline()) {
// Descend into text content (if possible).
if (RenderObject* child = current->firstChild()) {
current = child;
continue;
}
}
current = current->nextInPreOrderAfterChildren(root);
}
return false;
}
void RenderTableRow::addChild(RenderObject* child, RenderObject* beforeChild)
{
// Make sure we don't append things after :after-generated content if we have it.
if (!beforeChild)
beforeChild = findAfterContentRenderer();
if (!child->isTableCell()) {
RenderObject* last = beforeChild;
if (!last)
last = lastChild();
if (last && last->isAnonymous() && last->isTableCell() && !last->isBeforeOrAfterContent()) {
if (beforeChild == last)
beforeChild = last->firstChild();
last->addChild(child, beforeChild);
return;
}
if (beforeChild && !beforeChild->isAnonymous() && beforeChild->parent() == this) {
RenderObject* cell = beforeChild->previousSibling();
if (cell && cell->isTableCell()) {
ASSERT(cell->isAnonymous());
cell->addChild(child);
return;
}
}
// If beforeChild is inside an anonymous cell, insert into the cell.
if (last && !last->isTableCell() && last->parent() && last->parent()->isAnonymous() && !last->parent()->isBeforeOrAfterContent()) {
last->parent()->addChild(child, beforeChild);
return;
}
RenderTableCell* cell = new (renderArena()) RenderTableCell(document() /* anonymous object */);
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(style());
newStyle->setDisplay(TABLE_CELL);
cell->setStyle(newStyle.release());
addChild(cell, beforeChild);
cell->addChild(child);
return;
}
// If the next renderer is actually wrapped in an anonymous table cell, we need to go up and find that.
while (beforeChild && beforeChild->parent() != this)
beforeChild = beforeChild->parent();
RenderTableCell* cell = toRenderTableCell(child);
// Generated content can result in us having a null section so make sure to null check our parent.
if (parent())
section()->addCell(cell, this);
ASSERT(!beforeChild || beforeChild->isTableCell());
RenderBox::addChild(cell, beforeChild);
if (beforeChild || nextSibling())
section()->setNeedsCellRecalc();
}
void AutoTableLayout::fullRecalc()
{
percentagesDirty = true;
hasPercent = false;
effWidthDirty = true;
int nEffCols = table->numEffCols();
layoutStruct.resize( nEffCols );
layoutStruct.fill( Layout() );
spanCells.fill( 0 );
RenderObject *child = table->firstChild();
Length grpWidth;
int cCol = 0;
while ( child ) {
if ( child->isTableCol() ) {
RenderTableCol *col = static_cast<RenderTableCol *>(child);
int span = col->span();
if ( col->firstChild() ) {
grpWidth = col->style()->width();
} else {
Length w = col->style()->width();
if ( w.isVariable() )
w = grpWidth;
if ( (w.isFixed() && w.value() == 0) ||
(w.isPercent() && w.value() == 0) )
w = Length();
int cEffCol = table->colToEffCol( cCol );
#ifdef DEBUG_LAYOUT
qDebug(" col element %d (eff=%d): Length=%d(%d), span=%d, effColSpan=%d", cCol, cEffCol, w.value(), w.type(), span, table->spanOfEffCol(cEffCol ) );
#endif
if ( !w.isVariable() && span == 1 && cEffCol < nEffCols ) {
if ( table->spanOfEffCol( cEffCol ) == 1 ) {
layoutStruct[cEffCol].width = w;
if (w.isFixed() && layoutStruct[cEffCol].maxWidth < w.value())
layoutStruct[cEffCol].maxWidth = w.value();
}
}
cCol += span;
}
} else {
break;
}
RenderObject *next = child->firstChild();
if ( !next )
next = child->nextSibling();
if ( !next && child->parent()->isTableCol() ) {
next = child->parent()->nextSibling();
grpWidth = Length();
}
child = next;
}
for ( int i = 0; i < nEffCols; i++ )
recalcColumn( i );
}
Position RenderInline::positionForCoordinates(int x, int y)
{
for (RenderObject *c = continuation(); c; c = c->continuation()) {
if (c->isInline() || c->firstChild())
return c->positionForCoordinates(x, y);
}
return RenderFlow::positionForCoordinates(x, y);
}
RenderMathMLOperator* RenderMathMLFraction::unembellishedOperator()
{
RenderObject* numeratorWrapper = firstChild();
if (!numeratorWrapper)
return 0;
RenderObject* numerator = numeratorWrapper->firstChild();
if (!numerator || !numerator->isRenderMathMLBlock())
return 0;
return toRenderMathMLBlock(numerator)->unembellishedOperator();
}
RenderBoxModelObject* RenderMathMLSubSup::base() const
{
RenderObject* baseWrapper = firstChild();
if (!baseWrapper)
return 0;
RenderObject* base = baseWrapper->firstChild();
if (!base || !base->isBoxModelObject())
return 0;
return toRenderBoxModelObject(base);
}
void RenderMathMLUnderOver::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderMathMLBlock::styleDidChange(diff, oldStyle);
RenderObject* base = this->base();
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
ASSERT(child->isAnonymous() && child->style()->refCount() == 1);
if (child->firstChild() != base)
child->style()->setTextAlign(CENTER);
}
}
static RenderObject* findBeforeAfterParent(RenderObject* object)
{
// Only table parts need to search for the :before or :after parent
if (!(object->isTable() || object->isTableSection() || object->isTableRow()))
return object;
RenderObject* beforeAfterParent = object;
while (beforeAfterParent && !(beforeAfterParent->isText() || beforeAfterParent->isImage()))
beforeAfterParent = beforeAfterParent->firstChild();
return beforeAfterParent;
}
RenderBoxModelObject* RenderMathMLUnderOver::base() const
{
RenderObject* baseWrapper = firstChild();
if ((m_kind == Over || m_kind == UnderOver) && baseWrapper)
baseWrapper = baseWrapper->nextSibling();
if (!baseWrapper)
return 0;
RenderObject* base = baseWrapper->firstChild();
if (!base || !base->isBoxModelObject())
return 0;
return toRenderBoxModelObject(base);
}
void RenderTableRow::addChild(RenderObject* child, RenderObject* beforeChild)
{
// Make sure we don't append things after :after-generated content if we have it.
if (!beforeChild)
beforeChild = afterPseudoElementRenderer();
if (!child->isTableCell()) {
RenderObject* last = beforeChild;
if (!last)
last = lastChild();
if (last && last->isAnonymous() && last->isTableCell() && !last->isBeforeOrAfterContent()) {
if (beforeChild == last)
beforeChild = last->firstChild();
last->addChild(child, beforeChild);
return;
}
if (beforeChild && !beforeChild->isAnonymous() && beforeChild->parent() == this) {
RenderObject* cell = beforeChild->previousSibling();
if (cell && cell->isTableCell() && cell->isAnonymous()) {
cell->addChild(child);
return;
}
}
// If beforeChild is inside an anonymous cell, insert into the cell.
if (last && !last->isTableCell() && last->parent() && last->parent()->isAnonymous() && !last->parent()->isBeforeOrAfterContent()) {
last->parent()->addChild(child, beforeChild);
return;
}
RenderTableCell* cell = RenderTableCell::createAnonymousWithParentRenderer(this);
addChild(cell, beforeChild);
cell->addChild(child);
return;
}
// If the next renderer is actually wrapped in an anonymous table cell, we need to go up and find that.
while (beforeChild && beforeChild->parent() != this)
beforeChild = beforeChild->parent();
RenderTableCell* cell = toRenderTableCell(child);
// Generated content can result in us having a null section so make sure to null check our parent.
if (parent())
section()->addCell(cell, this);
ASSERT(!beforeChild || beforeChild->isTableCell());
RenderBox::addChild(cell, beforeChild);
if (beforeChild || nextSibling())
section()->setNeedsCellRecalc();
}
void RenderContainer::removeLeftoverAnonymousBoxes()
{
// we have to go over all child nodes and remove anonymous boxes, that do _not_
// have inline children to keep the tree flat
RenderObject *child = firstChild();
while( child ) {
RenderObject *next = child->nextSibling();
if ( child->isRenderBlock() && child->isAnonymousBlock() && !child->continuation() && !child->childrenInline() && !child->isTableCell() ) {
RenderObject *firstAnChild = child->firstChild();
RenderObject *lastAnChild = child->lastChild();
if ( firstAnChild ) {
RenderObject *o = firstAnChild;
while( o ) {
o->setParent( this );
o = o->nextSibling();
}
firstAnChild->setPreviousSibling( child->previousSibling() );
lastAnChild->setNextSibling( child->nextSibling() );
if ( child->previousSibling() )
child->previousSibling()->setNextSibling( firstAnChild );
if ( child->nextSibling() )
child->nextSibling()->setPreviousSibling( lastAnChild );
} else {
if ( child->previousSibling() )
child->previousSibling()->setNextSibling( child->nextSibling() );
if ( child->nextSibling() )
child->nextSibling()->setPreviousSibling( child->previousSibling() );
}
if ( child == firstChild() )
m_first = firstAnChild;
if ( child == lastChild() )
m_last = lastAnChild;
child->setParent( 0 );
child->setPreviousSibling( 0 );
child->setNextSibling( 0 );
if ( !child->isText() ) {
RenderContainer *c = static_cast<RenderContainer *>(child);
c->m_first = 0;
c->m_next = 0;
}
child->detach();
}
child = next;
}
if ( parent() )
parent()->removeLeftoverAnonymousBoxes();
}
static RenderObject* findBeforeAfterParent(RenderObject* object)
{
// Only table parts need to search for the :before or :after parent
if (!(object->isTable() || object->isTableSection() || object->isTableRow()))
return object;
// If there is a :first-letter style applied on the :before or :after content,
// then we want the parent of the first-letter block
RenderObject* beforeAfterParent = object;
while (beforeAfterParent && !(beforeAfterParent->isText() || beforeAfterParent->isImage())
&& (beforeAfterParent->style()->styleType() != FIRST_LETTER))
beforeAfterParent = beforeAfterParent->firstChild();
return beforeAfterParent ? beforeAfterParent->parent() : 0;
}
void RenderTableRow::addChild(RenderObject* child, RenderObject* beforeChild)
{
if (!child->isTableCell()) {
RenderObject* last = beforeChild;
if (!last)
last = lastChild();
if (last && last->isAnonymous() && last->isTableCell() && !last->isBeforeOrAfterContent()) {
if (beforeChild == last)
beforeChild = last->firstChild();
last->addChild(child, beforeChild);
return;
}
if (beforeChild && !beforeChild->isAnonymous() && beforeChild->parent() == this) {
RenderObject* cell = beforeChild->previousSibling();
if (cell && cell->isTableCell() && cell->isAnonymous()) {
cell->addChild(child);
return;
}
}
// If beforeChild is inside an anonymous cell, insert into the cell.
if (last && !last->isTableCell() && last->parent() && last->parent()->isAnonymous() && !last->parent()->isBeforeOrAfterContent()) {
last->parent()->addChild(child, beforeChild);
return;
}
RenderTableCell* cell = RenderTableCell::createAnonymousWithParentRenderer(this);
addChild(cell, beforeChild);
cell->addChild(child);
return;
}
if (beforeChild && beforeChild->parent() != this)
beforeChild = splitAnonymousBoxesAroundChild(beforeChild);
RenderTableCell* cell = toRenderTableCell(child);
// Generated content can result in us having a null section so make sure to null check our parent.
if (parent())
section()->addCell(cell, this);
ASSERT(!beforeChild || beforeChild->isTableCell());
RenderBox::addChild(cell, beforeChild);
if (beforeChild || nextSibling())
section()->setNeedsCellRecalc();
}
VisiblePosition RenderInline::positionForCoordinates(int x, int y)
{
// Translate the coords from the pre-anonymous block to the post-anonymous block.
RenderBlock* cb = containingBlock();
int parentBlockX = cb->xPos() + x;
int parentBlockY = cb->yPos() + y;
for (RenderObject* c = continuation(); c; c = c->continuation()) {
RenderObject* contBlock = c;
if (c->isInline())
contBlock = c->containingBlock();
if (c->isInline() || c->firstChild())
return c->positionForCoordinates(parentBlockX - contBlock->xPos(), parentBlockY - contBlock->yPos());
}
return RenderFlow::positionForCoordinates(x, y);
}