C++ (Cpp) SiblingData::advance Examples

Example #1

File: StyleInvalidator.cpp Project: joone/chromium-crosswalk

bool StyleInvalidator::invalidate(Element& element, RecursionData& recursionData, SiblingData& siblingData)
{
    siblingData.advance();
    RecursionCheckpoint checkpoint(&recursionData);

    bool thisElementNeedsStyleRecalc = checkInvalidationSetsAgainstElement(element, recursionData, siblingData);

    bool someChildrenNeedStyleRecalc = false;
    if (recursionData.hasInvalidationSets() || element.childNeedsStyleInvalidation())
        someChildrenNeedStyleRecalc = invalidateChildren(element, recursionData);

    if (thisElementNeedsStyleRecalc) {
        ASSERT(!recursionData.wholeSubtreeInvalid());
        element.setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::StyleInvalidator));
    } else if (recursionData.hasInvalidationSets() && someChildrenNeedStyleRecalc) {
        // Clone the ComputedStyle in order to preserve correct style sharing, if possible. Otherwise recalc style.
        if (LayoutObject* layoutObject = element.layoutObject()) {
            layoutObject->setStyleInternal(ComputedStyle::clone(layoutObject->styleRef()));
        } else {
            TRACE_STYLE_INVALIDATOR_INVALIDATION_IF_ENABLED(element, PreventStyleSharingForParent);
            element.setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::StyleInvalidator));
        }
    }

    if (recursionData.insertionPointCrossing() && element.isInsertionPoint())
        element.setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::StyleInvalidator));

    element.clearChildNeedsStyleInvalidation();
    element.clearNeedsStyleInvalidation();

    return thisElementNeedsStyleRecalc;
}