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/*
* Copyright (C) 2014 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#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)
{
}
SelectionSubtreeRoot::SelectionSubtreeRoot(RenderObject* selectionStart, int selectionStartPos, RenderObject* selectionEnd, int selectionEndPos)
: m_selectionStart(selectionStart)
, m_selectionStartPos(selectionStartPos)
, m_selectionEnd(selectionEnd)
, m_selectionEndPos(selectionEndPos)
{
}
void SelectionSubtreeRoot::adjustForVisibleSelection(Document& document)
{
if (selectionClear())
return;
// Create a range based on the cached end points
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();
}
}
} // namespace WebCore
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