Node* DOMSelection::anchorNode() const
{
if (!m_frame)
return 0;
return shadowAdjustedNode(anchorPosition(visibleSelection()));
}
Range* DOMSelection::getRangeAt(int index, ExceptionState& exceptionState) {
if (!isAvailable())
return nullptr;
if (index < 0 || index >= rangeCount()) {
exceptionState.throwDOMException(
IndexSizeError, String::number(index) + " is not a valid index.");
return nullptr;
}
// If you're hitting this, you've added broken multi-range selection support
DCHECK_EQ(rangeCount(), 1);
Position anchor = anchorPosition(visibleSelection());
if (!anchor.anchorNode()->isInShadowTree())
return frame()->selection().firstRange();
Node* node = shadowAdjustedNode(anchor);
if (!node) // crbug.com/595100
return nullptr;
if (!visibleSelection().isBaseFirst())
return Range::create(*anchor.document(), focusNode(), focusOffset(), node,
anchorOffset());
return Range::create(*anchor.document(), node, anchorOffset(), focusNode(),
focusOffset());
}
Node* DOMSelection::extentNode() const
{
if (!m_frame)
return 0;
return shadowAdjustedNode(extentPosition(visibleSelection()));
}
Node* DOMSelection::baseNode() const
{
if (!m_frame)
return 0;
return shadowAdjustedNode(basePosition(visibleSelection()));
}
Node* DOMSelection::focusNode() const
{
if (!m_frame)
return 0;
return shadowAdjustedNode(focusPosition(visibleSelection()));
}
PassRefPtrWillBeRawPtr<Range> DOMSelection::getRangeAt(int index, ExceptionState& exceptionState)
{
if (!m_frame)
return nullptr;
if (index < 0 || index >= rangeCount()) {
exceptionState.throwDOMException(IndexSizeError, String::number(index) + " is not a valid index.");
return nullptr;
}
// If you're hitting this, you've added broken multi-range selection support
ASSERT(rangeCount() == 1);
Position anchor = anchorPosition(visibleSelection());
if (!anchor.anchorNode()->isInShadowTree())
return m_frame->selection().firstRange();
if (!visibleSelection().isBaseFirst())
return Range::create(*anchor.document(), focusNode(), focusOffset(), shadowAdjustedNode(anchor), anchorOffset());
return Range::create(*anchor.document(), shadowAdjustedNode(anchor), anchorOffset(), focusNode(), focusOffset());
}
Node* DOMSelection::baseNode() const {
if (!isAvailable())
return 0;
return shadowAdjustedNode(basePosition(visibleSelection()));
}