static HTMLElement* highestAncestorToWrapMarkup(const Range* range, EAnnotateForInterchange shouldAnnotate, Node* constrainingAncestor)
{
Node* commonAncestor = range->commonAncestorContainer();
ASSERT(commonAncestor);
HTMLElement* specialCommonAncestor = 0;
Node* checkAncestor = specialCommonAncestor ? specialCommonAncestor : commonAncestor;
if (checkAncestor->renderer()) {
HTMLElement* newSpecialCommonAncestor = toHTMLElement(highestEnclosingNodeOfType(firstPositionInNode(checkAncestor), &isPresentationalHTMLElement, CanCrossEditingBoundary, constrainingAncestor));
if (newSpecialCommonAncestor)
specialCommonAncestor = newSpecialCommonAncestor;
}
if (HTMLAnchorElement* enclosingAnchor = toHTMLAnchorElement(enclosingElementWithTag(firstPositionInNode(specialCommonAncestor ? specialCommonAncestor : commonAncestor), HTMLNames::aTag)))
specialCommonAncestor = enclosingAnchor;
return specialCommonAncestor;
}
static HTMLElement* highestAncestorToWrapMarkup(
const PositionTemplate<Strategy>& startPosition,
const PositionTemplate<Strategy>& endPosition,
EAnnotateForInterchange shouldAnnotate,
Node* constrainingAncestor) {
Node* firstNode = startPosition.nodeAsRangeFirstNode();
// For compatibility reason, we use container node of start and end
// positions rather than first node and last node in selection.
Node* commonAncestor =
Strategy::commonAncestor(*startPosition.computeContainerNode(),
*endPosition.computeContainerNode());
DCHECK(commonAncestor);
HTMLElement* specialCommonAncestor = nullptr;
if (shouldAnnotate == AnnotateForInterchange) {
// Include ancestors that aren't completely inside the range but are
// required to retain the structure and appearance of the copied markup.
specialCommonAncestor =
ancestorToRetainStructureAndAppearance(commonAncestor);
if (Node* parentListNode = enclosingNodeOfType(
firstPositionInOrBeforeNode(firstNode), isListItem)) {
EphemeralRangeTemplate<Strategy> markupRange =
EphemeralRangeTemplate<Strategy>(startPosition, endPosition);
EphemeralRangeTemplate<Strategy> nodeRange = normalizeRange(
EphemeralRangeTemplate<Strategy>::rangeOfContents(*parentListNode));
if (nodeRange == markupRange) {
ContainerNode* ancestor = parentListNode->parentNode();
while (ancestor && !isHTMLListElement(ancestor))
ancestor = ancestor->parentNode();
specialCommonAncestor = toHTMLElement(ancestor);
}
}
// Retain the Mail quote level by including all ancestor mail block quotes.
if (HTMLQuoteElement* highestMailBlockquote =
toHTMLQuoteElement(highestEnclosingNodeOfType(
firstPositionInOrBeforeNode(firstNode),
isMailHTMLBlockquoteElement, CanCrossEditingBoundary)))
specialCommonAncestor = highestMailBlockquote;
}
Node* checkAncestor =
specialCommonAncestor ? specialCommonAncestor : commonAncestor;
if (checkAncestor->layoutObject()) {
HTMLElement* newSpecialCommonAncestor =
toHTMLElement(highestEnclosingNodeOfType(
Position::firstPositionInNode(checkAncestor),
&isPresentationalHTMLElement, CanCrossEditingBoundary,
constrainingAncestor));
if (newSpecialCommonAncestor)
specialCommonAncestor = newSpecialCommonAncestor;
}
// If a single tab is selected, commonAncestor will be a text node inside a
// tab span. If two or more tabs are selected, commonAncestor will be the tab
// span. In either case, if there is a specialCommonAncestor already, it will
// necessarily be above any tab span that needs to be included.
if (!specialCommonAncestor && isTabHTMLSpanElementTextNode(commonAncestor))
specialCommonAncestor =
toHTMLSpanElement(Strategy::parent(*commonAncestor));
if (!specialCommonAncestor && isTabHTMLSpanElement(commonAncestor))
specialCommonAncestor = toHTMLSpanElement(commonAncestor);
if (HTMLAnchorElement* enclosingAnchor =
toHTMLAnchorElement(enclosingElementWithTag(
Position::firstPositionInNode(specialCommonAncestor
? specialCommonAncestor
: commonAncestor),
aTag)))
specialCommonAncestor = enclosingAnchor;
return specialCommonAncestor;
}
