// 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);
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(style());
newStyle->setDisplay(FLEX);
RenderMathMLBlock* container = new RenderMathMLBlock(element());
// This container doesn't offer any useful information to accessibility.
container->setIgnoreInAccessibilityTree(true);
container->setStyle(newStyle.release());
addChild(container);
RenderText* text;
if (m_operator)
text = new RenderText(document(), String(&m_operator, 1));
else
text = new RenderText(document(), element().textContent().replace(hyphenMinus, minusSign).impl());
// If we can't figure out the text, leave it blank.
if (text)
container->addChild(text);
updateStyle();
setNeedsLayoutAndPrefWidthsRecalc();
}
