static bool planCounter(LayoutObject& object, const AtomicString& identifier, bool& isReset, int& value)
{
// Real text nodes don't have their own style so they can't have counters.
// We can't even look at their styles or we'll see extra resets and increments!
if (object.isText() && !object.isBR())
return false;
Node* generatingNode = object.generatingNode();
// We must have a generating node or else we cannot have a counter.
if (!generatingNode)
return false;
const ComputedStyle& style = object.styleRef();
switch (style.styleType()) {
case NOPSEUDO:
// Sometimes nodes have more then one layoutObject. Only the first one gets the counter
// LayoutTests/http/tests/css/counter-crash.html
if (generatingNode->layoutObject() != &object)
return false;
break;
case BEFORE:
case AFTER:
break;
default:
return false; // Counters are forbidden from all other pseudo elements.
}
const CounterDirectives directives = style.getCounterDirectives(identifier);
if (directives.isDefined()) {
value = directives.combinedValue();
isReset = directives.isReset();
return true;
}
if (identifier == "list-item") {
if (object.isListItem()) {
if (toLayoutListItem(object).hasExplicitValue()) {
value = toLayoutListItem(object).explicitValue();
isReset = true;
return true;
}
value = 1;
isReset = false;
return true;
}
if (Node* e = object.node()) {
if (isHTMLOListElement(*e)) {
value = toHTMLOListElement(e)->start();
isReset = true;
return true;
}
if (isHTMLUListElement(*e) || isHTMLMenuElement(*e) || isHTMLDirectoryElement(*e)) {
value = 0;
isReset = true;
return true;
}
}
}
return false;
}
inline void HTMLLIElement::parseValue(const AtomicString& value) {
DCHECK(layoutObject());
DCHECK(layoutObject()->isListItem());
bool valueOK;
int requestedValue = value.toInt(&valueOK);
if (valueOK)
toLayoutListItem(layoutObject())->setExplicitValue(requestedValue);
else
toLayoutListItem(layoutObject())->clearExplicitValue();
}
float TextAutosizer::inflate(LayoutObject* parent, InflateBehavior behavior, float multiplier)
{
Cluster* cluster = currentCluster();
bool hasTextChild = false;
LayoutObject* child = nullptr;
if (parent->isLayoutBlock() && (parent->childrenInline() || behavior == DescendToInnerBlocks))
child = toLayoutBlock(parent)->firstChild();
else if (parent->isLayoutInline())
child = toLayoutInline(parent)->firstChild();
while (child) {
if (child->isText()) {
hasTextChild = true;
// We only calculate this multiplier on-demand to ensure the parent block of this text
// has entered layout.
if (!multiplier)
multiplier = cluster->m_flags & SUPPRESSING ? 1.0f : clusterMultiplier(cluster);
applyMultiplier(child, multiplier);
// FIXME: Investigate why MarkOnlyThis is sufficient.
if (parent->isLayoutInline())
child->setPreferredLogicalWidthsDirty(MarkOnlyThis);
} else if (child->isLayoutInline()) {
multiplier = inflate(child, behavior, multiplier);
} else if (child->isLayoutBlock() && behavior == DescendToInnerBlocks
&& !classifyBlock(child, INDEPENDENT | EXPLICIT_WIDTH | SUPPRESSING)) {
multiplier = inflate(child, behavior, multiplier);
}
child = child->nextSibling();
}
if (hasTextChild) {
applyMultiplier(parent, multiplier); // Parent handles line spacing.
} else if (!parent->isListItem()) {
// For consistency, a block with no immediate text child should always have a
// multiplier of 1.
applyMultiplier(parent, 1);
}
if (parent->isListItem()) {
float multiplier = clusterMultiplier(cluster);
applyMultiplier(parent, multiplier);
// The list item has to be treated special because we can have a tree such that you have
// a list item for a form inside it. The list marker then ends up inside the form and when
// we try to get the clusterMultiplier we have the wrong cluster root to work from and get
// the wrong value.
LayoutListItem* item = toLayoutListItem(parent);
if (LayoutListMarker* marker = item->marker()) {
applyMultiplier(marker, multiplier);
marker->setPreferredLogicalWidthsDirty(MarkOnlyThis);
}
}
return multiplier;
}
