DocumentFragment* createFragmentFromText(const EphemeralRange& context,
const String& text) {
if (context.isNull())
return nullptr;
Document& document = context.document();
DocumentFragment* fragment = document.createDocumentFragment();
if (text.isEmpty())
return fragment;
String string = text;
string.replace("\r\n", "\n");
string.replace('\r', '\n');
if (!isRichlyEditablePosition(context.startPosition()) ||
shouldPreserveNewline(context)) {
fragment->appendChild(document.createTextNode(string));
if (string.endsWith('\n')) {
HTMLBRElement* element = HTMLBRElement::create(document);
element->setAttribute(classAttr, AppleInterchangeNewline);
fragment->appendChild(element);
}
return fragment;
}
// A string with no newlines gets added inline, rather than being put into a
// paragraph.
if (string.find('\n') == kNotFound) {
fillContainerFromString(fragment, string);
return fragment;
}
// Break string into paragraphs. Extra line breaks turn into empty paragraphs.
Element* block =
enclosingBlock(context.startPosition().nodeAsRangeFirstNode());
bool useClonesOfEnclosingBlock =
block && !isHTMLBodyElement(*block) && !isHTMLHtmlElement(*block) &&
block != rootEditableElementOf(context.startPosition());
Vector<String> list;
string.split('\n', true, list); // true gets us empty strings in the list
size_t numLines = list.size();
for (size_t i = 0; i < numLines; ++i) {
const String& s = list[i];
Element* element = nullptr;
if (s.isEmpty() && i + 1 == numLines) {
// For last line, use the "magic BR" rather than a P.
element = HTMLBRElement::create(document);
element->setAttribute(classAttr, AppleInterchangeNewline);
} else {
if (useClonesOfEnclosingBlock)
element = block->cloneElementWithoutChildren();
else
element = createDefaultParagraphElement(document);
fillContainerFromString(element, s);
}
fragment->appendChild(element);
}
return fragment;
}
bool VisibleSelection::isContentRichlyEditable() const
{
return isRichlyEditablePosition(start());
}
bool DragCaretController::isContentRichlyEditable() const
{
return isRichlyEditablePosition(m_position.deepEquivalent());
}