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()
{
}
void SelectionSubtreeRoot::adjustForVisibleSelection(Document& document)
{
if (m_selectionSubtreeData.selectionClear())
return;
auto selectionStart = m_selectionSubtreeData.selectionStartPos().value();
auto selectionEnd = m_selectionSubtreeData.selectionEndPos().value();
Position startPosition = createLegacyEditingPosition(m_selectionSubtreeData.selectionStart()->node(), selectionStart);
Position endPosition = createLegacyEditingPosition(m_selectionSubtreeData.selectionEnd()->node(), selectionEnd);
RefPtr<Range> range = Range::create(document, startPosition.parentAnchoredEquivalent(), endPosition.parentAnchoredEquivalent());
VisibleSelection selection(*range);
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_selectionSubtreeData.clearSelection();
if (startPos.isNull() || endPos.isNull())
return;
if (selection.visibleStart() == selection.visibleEnd())
return;
if (startPos.deprecatedNode()->renderer()->flowThreadContainingBlock() != endPos.deprecatedNode()->renderer()->flowThreadContainingBlock())
return;
if (&startPos.deprecatedNode()->renderer()->selectionRoot() != this)
return;
auto newStartPos = startPos.deprecatedEditingOffset();
auto newEndPos = endPos.deprecatedEditingOffset();
ASSERT(newStartPos >= 0 && newEndPos >= 0);
m_selectionSubtreeData.setSelectionStart(startPos.deprecatedNode()->renderer());
m_selectionSubtreeData.setSelectionStartPos(newStartPos);
m_selectionSubtreeData.setSelectionEnd(endPos.deprecatedNode()->renderer());
m_selectionSubtreeData.setSelectionEndPos(newEndPos);
}
}