static VisiblePosition visiblePositionForHitTestResult(const HitTestResult& hitTestResult)
{
Node* innerNode = hitTestResult.innerNode();
VisiblePosition position(innerNode->renderer()->positionForPoint(hitTestResult.localPoint()));
if (!position.isNull())
return position;
return VisiblePosition(firstPositionInOrBeforeNode(innerNode), DOWNSTREAM);
}
// Neighbor-anchored positions are invalid DOM positions, so they need to be
// fixed up before handing them off to the Range object.
Position Position::parentAnchoredEquivalent() const
{
if (!m_anchorNode)
return Position();
// FIXME: This should only be necessary for legacy positions, but is also needed for positions before and after Tables
if (m_offset <= 0 && m_anchorType != PositionIsAfterAnchor) {
if (m_anchorNode->parentNode() && (editingIgnoresContent(m_anchorNode.get()) || isTableElement(m_anchorNode.get())))
return positionInParentBeforeNode(m_anchorNode.get());
return firstPositionInOrBeforeNode(m_anchorNode.get());
}
if (!m_anchorNode->offsetInCharacters() && (m_anchorType == PositionIsAfterAnchor || static_cast<unsigned>(m_offset) == m_anchorNode->childNodeCount())
&& (editingIgnoresContent(m_anchorNode.get()) || isTableElement(m_anchorNode.get()))
&& containerNode()) {
return positionInParentAfterNode(m_anchorNode.get());
}
return Position(containerNode(), computeOffsetInContainerNode(), PositionIsOffsetInAnchor);
}
// Currenntly ignoring TextCheckingResult::details but should be handled. See Bug 56368.
void SpellChecker::didCheck(int sequence, const Vector<TextCheckingResult>& results)
{
if (!isValid(sequence))
return;
if (!m_requestNode->renderer()) {
clearRequest();
return;
}
int startOffset = 0;
PositionIterator start = firstPositionInOrBeforeNode(m_requestNode.get());
for (size_t i = 0; i < results.size(); ++i) {
if (results[i].type != TextCheckingTypeSpelling && results[i].type != TextCheckingTypeGrammar)
continue;
// To avoid moving the position backward, we assume the given results are sorted with
// startOffset as the ones returned by [NSSpellChecker requestCheckingOfString:].
ASSERT(startOffset <= results[i].location);
if (!forwardIterator(start, results[i].location - startOffset))
break;
PositionIterator end = start;
if (!forwardIterator(end, results[i].length))
break;
// Users or JavaScript applications may change text while a spell-checker checks its
// spellings in the background. To avoid adding markers to the words modified by users or
// JavaScript applications, retrieve the words in the specified region and compare them with
// the original ones.
RefPtr<Range> range = Range::create(m_requestNode->document(), start, end);
// FIXME: Use textContent() compatible string conversion.
String destination = range->text();
String source = m_requestText.substring(results[i].location, results[i].length);
if (destination == source)
m_requestNode->document()->markers()->addMarker(range.get(), toMarkerType(results[i].type));
startOffset = results[i].location;
}
clearRequest();
}
VisiblePosition LocalFrame::visiblePositionForPoint(const IntPoint& framePoint)
{
if (!contentRenderer() || !view() || !view()->didFirstLayout())
return VisiblePosition();
LayoutSize padding = LayoutSize();
HitTestResult result(framePoint, padding.height(), padding.width(), padding.height(), padding.width());
HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active);
contentRenderer()->hitTest(request, result);
Node* node = result.innerNonSharedNode();
if (!node)
return VisiblePosition();
RenderObject* renderer = node->renderer();
if (!renderer)
return VisiblePosition();
VisiblePosition visiblePos = VisiblePosition(renderer->positionForPoint(result.localPoint()));
if (visiblePos.isNull())
visiblePos = VisiblePosition(firstPositionInOrBeforeNode(node));
return visiblePos;
}
void VisibleSelection::adjustSelectionToAvoidCrossingShadowBoundaries()
{
if (m_base.isNull() || m_start.isNull() || m_end.isNull())
return;
Node* startRootNode = m_start.anchorNode()->nonBoundaryShadowTreeRootNode();
Node* endRootNode = m_end.anchorNode()->nonBoundaryShadowTreeRootNode();
if (!startRootNode && !endRootNode)
return;
if (startRootNode == endRootNode)
return;
if (m_baseIsFirst) {
m_extent = startRootNode ? lastPositionInOrAfterNode(startRootNode) : positionBeforeNode(endRootNode->shadowAncestorNode());
m_end = m_extent;
} else {
m_extent = endRootNode ? firstPositionInOrBeforeNode(endRootNode) : positionAfterNode(startRootNode->shadowAncestorNode());
m_start = m_extent;
}
ASSERT(m_start.anchorNode()->treeScope() == m_end.anchorNode()->treeScope());
}
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;
}
static inline HTMLElement*
ancestorToRetainStructureAndAppearanceWithNoLayoutObject(Node* commonAncestor) {
HTMLElement* commonAncestorBlock = toHTMLElement(enclosingNodeOfType(
firstPositionInOrBeforeNode(commonAncestor), isHTMLBlockElement));
return ancestorToRetainStructureAndAppearanceForBlock(commonAncestorBlock);
}