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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:41 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:41 -0800
commit648161bb0edfc3d43db63caed5cc5213bc6cb78f (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /WebCore/dom/RangeBoundaryPoint.h
parenta65af38181ac7d34544586bdb5cd004de93897ad (diff)
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Diffstat (limited to 'WebCore/dom/RangeBoundaryPoint.h')
-rw-r--r--WebCore/dom/RangeBoundaryPoint.h182
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diff --git a/WebCore/dom/RangeBoundaryPoint.h b/WebCore/dom/RangeBoundaryPoint.h
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--- a/WebCore/dom/RangeBoundaryPoint.h
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-/*
- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
- *
- * 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 APPLE INC. ``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 APPLE INC. OR
- * CONTRIBUTORS 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.
- */
-
-#ifndef RangeBoundaryPoint_h
-#define RangeBoundaryPoint_h
-
-#include "Node.h"
-#include "Position.h"
-
-namespace WebCore {
-
-class RangeBoundaryPoint {
-public:
- RangeBoundaryPoint();
- explicit RangeBoundaryPoint(PassRefPtr<Node> container);
-
- const Position& position() const;
- Node* container() const;
- int offset() const;
- Node* childBefore() const;
-
- void clear();
-
- void set(PassRefPtr<Node> container, int offset, Node* childBefore);
- void setOffset(int offset);
- void setToChild(Node* child);
- void setToStart(PassRefPtr<Node> container);
- void setToEnd(PassRefPtr<Node> container);
-
- void childBeforeWillBeRemoved();
- void invalidateOffset() const;
-
-private:
- static const int invalidOffset = -1;
-
- mutable Position m_position;
- Node* m_childBefore;
-};
-
-inline RangeBoundaryPoint::RangeBoundaryPoint()
- : m_childBefore(0)
-{
-}
-
-inline RangeBoundaryPoint::RangeBoundaryPoint(PassRefPtr<Node> container)
- : m_position(container, 0)
- , m_childBefore(0)
-{
-}
-
-inline Node* RangeBoundaryPoint::container() const
-{
- return m_position.container.get();
-}
-
-inline Node* RangeBoundaryPoint::childBefore() const
-{
- return m_childBefore;
-}
-
-inline const Position& RangeBoundaryPoint::position() const
-{
- if (m_position.posOffset >= 0)
- return m_position;
- ASSERT(m_childBefore);
- m_position.posOffset = m_childBefore->nodeIndex() + 1;
- return m_position;
-}
-
-inline int RangeBoundaryPoint::offset() const
-{
- return position().posOffset;
-}
-
-inline void RangeBoundaryPoint::clear()
-{
- m_position.clear();
- m_childBefore = 0;
-}
-
-inline void RangeBoundaryPoint::set(PassRefPtr<Node> container, int offset, Node* childBefore)
-{
- ASSERT(offset >= 0);
- ASSERT(childBefore == (offset ? container->childNode(offset - 1) : 0));
- m_position.container = container;
- m_position.posOffset = offset;
- m_childBefore = childBefore;
-}
-
-inline void RangeBoundaryPoint::setOffset(int offset)
-{
- ASSERT(m_position.container);
- ASSERT(m_position.container->offsetInCharacters());
- ASSERT(m_position.posOffset >= 0);
- ASSERT(!m_childBefore);
- m_position.posOffset = offset;
-}
-
-inline void RangeBoundaryPoint::setToChild(Node* child)
-{
- ASSERT(child);
- ASSERT(child->parentNode());
- m_position.container = child->parentNode();
- m_childBefore = child->previousSibling();
- m_position.posOffset = m_childBefore ? invalidOffset : 0;
-}
-
-inline void RangeBoundaryPoint::setToStart(PassRefPtr<Node> container)
-{
- ASSERT(container);
- m_position.container = container;
- m_position.posOffset = 0;
- m_childBefore = 0;
-}
-
-inline void RangeBoundaryPoint::setToEnd(PassRefPtr<Node> container)
-{
- ASSERT(container);
- m_position.container = container;
- if (m_position.container->offsetInCharacters()) {
- m_position.posOffset = m_position.container->maxCharacterOffset();
- m_childBefore = 0;
- } else {
- m_childBefore = m_position.container->lastChild();
- m_position.posOffset = m_childBefore ? invalidOffset : 0;
- }
-}
-
-inline void RangeBoundaryPoint::childBeforeWillBeRemoved()
-{
- ASSERT(m_position.posOffset);
- m_childBefore = m_childBefore->previousSibling();
- if (!m_childBefore)
- m_position.posOffset = 0;
- else if (m_position.posOffset > 0)
- --m_position.posOffset;
-}
-
-inline void RangeBoundaryPoint::invalidateOffset() const
-{
- m_position.posOffset = invalidOffset;
-}
-
-inline bool operator==(const RangeBoundaryPoint& a, const RangeBoundaryPoint& b)
-{
- if (a.container() != b.container())
- return false;
- if (a.childBefore() || b.childBefore()) {
- if (a.childBefore() != b.childBefore())
- return false;
- } else {
- if (a.offset() != b.offset())
- return false;
- }
- return true;
-}
-
-}
-
-#endif