author | Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com> |
Fri, 08 May 2009 08:25:06 +0300 | |
changeset 8 | 7c90e6132015 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
0
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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/* |
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* Copyright (C) 2007 Apple Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "config.h" |
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#include "PositionIterator.h" |
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#include "Node.h" |
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#include "RenderObject.h" |
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#include "htmlediting.h" |
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|
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namespace WebCore { |
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|
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using namespace HTMLNames; |
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|
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void PositionIterator::increment() |
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{ |
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if (!m_parent) |
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return; |
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|
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if (m_child) { |
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m_parent = m_child; |
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m_child = m_parent->firstChild(); |
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m_offset = 0; |
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return; |
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} |
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|
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if (!m_parent->hasChildNodes() && m_offset < maxDeepOffset(m_parent)) |
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m_offset = m_parent->nextOffset(m_offset); |
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else { |
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m_child = m_parent; |
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m_parent = m_child->parentNode(); |
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m_child = m_child->nextSibling(); |
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m_offset = 0; |
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} |
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} |
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|
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void PositionIterator::decrement() |
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{ |
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if (!m_parent) |
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return; |
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|
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if (m_child) { |
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m_parent = m_child->previousSibling(); |
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if (m_parent) { |
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m_child = 0; |
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m_offset = m_parent->hasChildNodes() ? 0 : maxDeepOffset(m_parent); |
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} else { |
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m_child = m_child->parentNode(); |
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m_parent = m_child->parentNode(); |
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m_offset = 0; |
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} |
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return; |
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} |
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|
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if (m_offset) { |
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m_offset = m_parent->previousOffset(m_offset); |
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} else { |
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if (m_parent->hasChildNodes()) { |
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m_parent = m_parent->lastChild(); |
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if (!m_parent->hasChildNodes()) |
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m_offset = maxDeepOffset(m_parent); |
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} else { |
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m_child = m_parent; |
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m_parent = m_parent->parentNode(); |
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} |
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} |
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} |
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|
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bool PositionIterator::atStart() const |
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{ |
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if (!m_parent) |
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return true; |
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if (m_parent->parentNode()) |
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return false; |
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return !m_parent->hasChildNodes() && !m_offset || m_child && !m_child->previousSibling(); |
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} |
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|
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bool PositionIterator::atEnd() const |
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101 |
{ |
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if (!m_parent) |
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return true; |
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if (m_child) |
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return false; |
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return !m_parent->parentNode() && (m_parent->hasChildNodes() || m_offset >= maxDeepOffset(m_parent)); |
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} |
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|
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bool PositionIterator::atStartOfNode() const |
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{ |
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if (!m_parent) |
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return true; |
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if (!m_child) |
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return !m_parent->hasChildNodes() && !m_offset; |
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return !m_child->previousSibling(); |
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} |
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|
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bool PositionIterator::atEndOfNode() const |
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{ |
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if (!m_parent) |
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return true; |
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if (m_child) |
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return false; |
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return m_parent->hasChildNodes() || m_offset >= maxDeepOffset(m_parent); |
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} |
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bool PositionIterator::isCandidate() const |
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{ |
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if (!m_parent) |
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return false; |
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|
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RenderObject* renderer = m_parent->renderer(); |
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if (!renderer) |
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return false; |
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if (renderer->style()->visibility() != VISIBLE) |
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return false; |
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if (renderer->isBR()) |
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return !m_offset && !Position::nodeIsUserSelectNone(m_parent->parent()); |
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|
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if (renderer->isText()) |
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return Position(*this).inRenderedText() && !Position::nodeIsUserSelectNone(m_parent); |
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if (isTableElement(m_parent) || editingIgnoresContent(m_parent)) |
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return (atStartOfNode() || atEndOfNode()) && !Position::nodeIsUserSelectNone(m_parent->parent()); |
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|
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if (!m_parent->hasTagName(htmlTag) && renderer->isBlockFlow() && !Position::hasRenderedNonAnonymousDescendantsWithHeight(renderer) && |
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(renderer->height() || m_parent->hasTagName(bodyTag))) |
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return atStartOfNode() && !Position::nodeIsUserSelectNone(m_parent); |
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return false; |
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} |
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} // namespace WebCore |