void FirstLetterPseudoElement::updateTextFragments()
{
String oldText = m_remainingTextLayoutObject->completeText();
ASSERT(oldText.impl());
unsigned length = FirstLetterPseudoElement::firstLetterLength(oldText);
m_remainingTextLayoutObject->setTextFragment(oldText.impl()->substring(length, oldText.length()), length, oldText.length() - length);
m_remainingTextLayoutObject->dirtyLineBoxes();
for (auto child = layoutObject()->slowFirstChild(); child; child = child->nextSibling()) {
if (!child->isText() || !toLayoutText(child)->isTextFragment())
continue;
LayoutTextFragment* childFragment = toLayoutTextFragment(child);
if (childFragment->firstLetterPseudoElement() != this)
continue;
childFragment->setTextFragment(oldText.impl()->substring(0, length), 0, length);
childFragment->dirtyLineBoxes();
// Make sure the first-letter layoutObject is set to require a layout as it
// needs to re-create the line boxes. The remaining text layoutObject
// will be marked by the LayoutText::setText.
childFragment->setNeedsLayoutAndPrefWidthsRecalc(LayoutInvalidationReason::TextChanged);
break;
}
}
LayoutText* SimplifiedBackwardsTextIteratorAlgorithm<Strategy>::handleFirstLetter(int& startOffset, int& offsetInNode)
{
LayoutText* layoutObject = toLayoutText(m_node->layoutObject());
startOffset = (m_node == m_startNode) ? m_startOffset : 0;
if (!layoutObject->isTextFragment()) {
offsetInNode = 0;
return layoutObject;
}
LayoutTextFragment* fragment = toLayoutTextFragment(layoutObject);
int offsetAfterFirstLetter = fragment->start();
if (startOffset >= offsetAfterFirstLetter) {
ASSERT(!m_shouldHandleFirstLetter);
offsetInNode = offsetAfterFirstLetter;
return layoutObject;
}
if (!m_shouldHandleFirstLetter && offsetAfterFirstLetter < m_offset) {
m_shouldHandleFirstLetter = true;
offsetInNode = offsetAfterFirstLetter;
return layoutObject;
}
m_shouldHandleFirstLetter = false;
offsetInNode = 0;
ASSERT(fragment->isRemainingTextLayoutObject());
ASSERT(fragment->firstLetterPseudoElement());
LayoutObject* pseudoElementLayoutObject = fragment->firstLetterPseudoElement()->layoutObject();
ASSERT(pseudoElementLayoutObject);
ASSERT(pseudoElementLayoutObject->slowFirstChild());
LayoutText* firstLetterLayoutObject = toLayoutText(pseudoElementLayoutObject->slowFirstChild());
m_offset = firstLetterLayoutObject->caretMaxOffset();
m_offset += collapsedSpaceLength(firstLetterLayoutObject, m_offset);
return firstLetterLayoutObject;
}
