void InputMethodController::setCompositionFromExistingText(const Vector<CompositionUnderline>& underlines, unsigned compositionStart, unsigned compositionEnd)
{
Element* editable = frame().selection().rootEditableElement();
if (!editable)
return;
const EphemeralRange range = PlainTextRange(compositionStart, compositionEnd).createRange(*editable);
if (range.isNull())
return;
const Position start = range.startPosition();
if (rootEditableElementOf(start) != editable)
return;
const Position end = range.endPosition();
if (rootEditableElementOf(end) != editable)
return;
clear();
for (const auto& underline : underlines) {
unsigned underlineStart = compositionStart + underline.startOffset;
unsigned underlineEnd = compositionStart + underline.endOffset;
EphemeralRange ephemeralLineRange = PlainTextRange(underlineStart, underlineEnd).createRange(*editable);
if (ephemeralLineRange.isNull())
continue;
frame().document()->markers().addCompositionMarker(ephemeralLineRange.startPosition(), ephemeralLineRange.endPosition(), underline.color, underline.thick, underline.backgroundColor);
}
m_hasComposition = true;
if (!m_compositionRange)
m_compositionRange = Range::create(range.document());
m_compositionRange->setStart(range.startPosition());
m_compositionRange->setEnd(range.endPosition());
}
bool FrameCaret::shouldBlinkCaret() const {
if (m_caretVisibility != CaretVisibility::Visible || !isActive())
return false;
Element* root = rootEditableElementOf(caretPosition().position());
if (!root)
return false;
Element* focusedElement = root->document().focusedElement();
if (!focusedElement)
return false;
return focusedElement->isShadowIncludingInclusiveAncestorOf(
caretPosition().anchorNode());
}
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;
}