SelectionSubtreeRoot.cpp [plain text]
#include "config.h"
#include "SelectionSubtreeRoot.h"
#include "Document.h"
#include "Position.h"
#include "Range.h"
#include "VisibleSelection.h"
namespace WebCore {
SelectionSubtreeRoot::SelectionSubtreeRoot()
: m_selectionStart(nullptr)
, m_selectionStartPos(-1)
, m_selectionEnd(nullptr)
, m_selectionEndPos(-1)
{
}
void SelectionSubtreeRoot::adjustForVisibleSelection(Document& document)
{
if (selectionClear())
return;
Position startPosition = createLegacyEditingPosition(m_selectionStart->node(), m_selectionStartPos);
Position endPosition = createLegacyEditingPosition(m_selectionEnd->node(), m_selectionEndPos);
RefPtr<Range> range = Range::create(document, startPosition.parentAnchoredEquivalent(), endPosition.parentAnchoredEquivalent());
VisibleSelection selection(range.get());
Position startPos = selection.start();
Position candidate = startPos.downstream();
if (candidate.isCandidate())
startPos = candidate;
Position endPos = selection.end();
candidate = endPos.upstream();
if (candidate.isCandidate())
endPos = candidate;
m_selectionStart = nullptr;
m_selectionStartPos = -1;
m_selectionEnd = nullptr;
m_selectionEndPos = -1;
if (startPos.isNotNull()
&& endPos.isNotNull()
&& selection.visibleStart() != selection.visibleEnd()
&& startPos.deprecatedNode()->renderer()->flowThreadContainingBlock() == endPos.deprecatedNode()->renderer()->flowThreadContainingBlock()) {
m_selectionStart = startPos.deprecatedNode()->renderer();
m_selectionStartPos = startPos.deprecatedEditingOffset();
m_selectionEnd = endPos.deprecatedNode()->renderer();
m_selectionEndPos = endPos.deprecatedEditingOffset();
}
}
}