// FIXME: It's cleaner to only call updateFromElement when an attribute has changed. The body of
// this method should probably be moved to a private stretchHeightChanged or checkStretchHeight
// method. Probably at the same time, addChild/removeChild methods should be made to work for
// dynamic DOM changes.
void RenderMathMLOperator::updateFromElement()
{
RenderElement* savedRenderer = element().renderer();
// Destroy our current children
destroyLeftoverChildren();
// Since we share a node with our children, destroying our children may set our node's
// renderer to 0, so we need to restore it.
element().setRenderer(savedRenderer);
RenderPtr<RenderMathMLBlock> container = createRenderer<RenderMathMLBlock>(element(), RenderStyle::createAnonymousStyleWithDisplay(&style(), FLEX));
// This container doesn't offer any useful information to accessibility.
container->setIgnoreInAccessibilityTree(true);
container->initializeStyle();
RenderPtr<RenderText> text;
if (m_operator)
text = createRenderer<RenderText>(document(), String(&m_operator, 1));
else
text = createRenderer<RenderText>(document(), element().textContent().replace(hyphenMinus, minusSign).impl());
container->addChild(text.leakPtr());
addChild(container.leakPtr());
updateStyle();
setNeedsLayoutAndPrefWidthsRecalc();
}
RenderPtr<RenderMathMLOperator> RenderMathMLFenced::createMathMLOperator(UChar uChar, MathMLOperatorDictionary::Form form, MathMLOperatorDictionary::Flag flag)
{
auto newStyle = RenderStyle::createAnonymousStyleWithDisplay(&style(), FLEX);
newStyle.get().setFlexDirection(FlowColumn);
newStyle.get().setMarginEnd(Length((flag == MathMLOperatorDictionary::Fence ? gFenceMarginEms : gSeparatorMarginEndEms) * style().fontSize(), Fixed));
if (flag == MathMLOperatorDictionary::Fence)
newStyle.get().setMarginStart(Length(gFenceMarginEms * style().fontSize(), Fixed));
RenderPtr<RenderMathMLOperator> newOperator = createRenderer<RenderMathMLOperator>(element(), std::move(newStyle), uChar, form, flag);
newOperator->initializeStyle();
return newOperator;
}
RenderPtr<RenderMathMLOperator> RenderMathMLFenced::createMathMLOperator(const String& operatorString, MathMLOperatorDictionary::Form form, MathMLOperatorDictionary::Flag flag)
{
RenderPtr<RenderMathMLOperator> newOperator = createRenderer<RenderMathMLOperator>(document(), RenderStyle::createAnonymousStyleWithDisplay(&style(), FLEX), operatorString, form, flag);
newOperator->initializeStyle();
return newOperator;
}
RenderPtr<RenderMathMLRow> RenderMathMLRow::createAnonymousWithParentRenderer(RenderMathMLRoot& parent)
{
RenderPtr<RenderMathMLRow> newMRow = createRenderer<RenderMathMLRow>(parent.document(), RenderStyle::createAnonymousStyleWithDisplay(&parent.style(), FLEX));
newMRow->initializeStyle();
return newMRow;
}
RenderPtr<RenderMathMLSquareRoot> RenderMathMLSquareRoot::createAnonymousWithParentRenderer(RenderMathMLMenclose& parent)
{
RenderPtr<RenderMathMLSquareRoot> squareRoot = createRenderer<RenderMathMLSquareRoot>(parent.document(), RenderStyle::createAnonymousStyleWithDisplay(&parent.style(), FLEX));
squareRoot->initializeStyle();
return squareRoot;
}
RenderPtr<RenderMathMLBlock> RenderMathMLBlock::createAnonymousMathMLBlock()
{
RenderPtr<RenderMathMLBlock> newBlock = createRenderer<RenderMathMLBlock>(document(), RenderStyle::createAnonymousStyleWithDisplay(&style(), FLEX));
newBlock->initializeStyle();
return newBlock;
}