void HTMLTextAreaElement::subtreeHasChanged() {
#if DCHECK_IS_ON()
// The innerEditor should have either Text nodes or a placeholder break
// element. If we see other nodes, it's a bug in editing code and we should
// fix it.
Element* innerEditor = innerEditorElement();
for (Node& node : NodeTraversal::descendantsOf(*innerEditor)) {
if (node.isTextNode())
continue;
DCHECK(isHTMLBRElement(node));
DCHECK_EQ(&node, innerEditor->lastChild());
}
#endif
addPlaceholderBreakElementIfNecessary();
setChangedSinceLastFormControlChangeEvent(true);
m_valueIsUpToDate = false;
setNeedsValidityCheck();
setAutofilled(false);
updatePlaceholderVisibility();
if (!isFocused())
return;
// When typing in a textarea, childrenChanged is not called, so we need to
// force the directionality check.
calculateAndAdjustDirectionality();
DCHECK(document().isActive());
document().frameHost()->chromeClient().didChangeValueInTextField(*this);
}
void HTMLTextFormControlElement::setInnerEditorValue(const String& value)
{
ASSERT(!openShadowRoot());
if (!isTextFormControl() || openShadowRoot())
return;
bool textIsChanged = value != innerEditorValue();
HTMLElement* innerEditor = innerEditorElement();
if (!textIsChanged && innerEditor->hasChildren())
return;
// If the last child is a trailing <br> that's appended below, remove it
// first so as to enable setInnerText() fast path of updating a text node.
if (isHTMLBRElement(innerEditor->lastChild()))
innerEditor->removeChild(innerEditor->lastChild(), ASSERT_NO_EXCEPTION);
// We don't use setTextContent. It triggers unnecessary paint.
if (value.isEmpty())
innerEditor->removeChildren();
else
replaceChildrenWithText(innerEditor, value, ASSERT_NO_EXCEPTION);
// Add <br> so that we can put the caret at the next line of the last
// newline.
addPlaceholderBreakElementIfNecessary();
if (textIsChanged && layoutObject()) {
if (AXObjectCache* cache = document().existingAXObjectCache())
cache->handleTextFormControlChanged(this);
}
}
