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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)
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parenta65af38181ac7d34544586bdb5cd004de93897ad (diff)
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diff --git a/WebCore/editing/Selection.h b/WebCore/editing/Selection.h
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-/*
- * Copyright (C) 2004 Apple Computer, 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 COMPUTER, 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 COMPUTER, 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 Selection_h
-#define Selection_h
-
-#include "TextGranularity.h"
-#include "VisiblePosition.h"
-
-namespace WebCore {
-
-class Position;
-
-const EAffinity SEL_DEFAULT_AFFINITY = DOWNSTREAM;
-
-class Selection {
-public:
- enum EState { NONE, CARET, RANGE };
- enum EDirection { FORWARD, BACKWARD, RIGHT, LEFT };
-
- Selection();
-
- Selection(const Position&, EAffinity);
- Selection(const Position&, const Position&, EAffinity);
-
- Selection(const Range*, EAffinity = SEL_DEFAULT_AFFINITY);
-
- Selection(const VisiblePosition&);
- Selection(const VisiblePosition&, const VisiblePosition&);
-
- static Selection selectionFromContentsOfNode(Node*);
-
- EState state() const { return m_state; }
-
- void setAffinity(EAffinity affinity) { m_affinity = affinity; }
- EAffinity affinity() const { return m_affinity; }
-
- void setBase(const Position&);
- void setBase(const VisiblePosition&);
- void setExtent(const Position&);
- void setExtent(const VisiblePosition&);
-
- Position base() const { return m_base; }
- Position extent() const { return m_extent; }
- Position start() const { return m_start; }
- Position end() const { return m_end; }
-
- VisiblePosition visibleStart() const { return VisiblePosition(m_start, isRange() ? DOWNSTREAM : affinity()); }
- VisiblePosition visibleEnd() const { return VisiblePosition(m_end, isRange() ? UPSTREAM : affinity()); }
-
- bool isNone() const { return state() == NONE; }
- bool isCaret() const { return state() == CARET; }
- bool isRange() const { return state() == RANGE; }
- bool isCaretOrRange() const { return state() != NONE; }
-
- bool isBaseFirst() const { return m_baseIsFirst; }
-
- bool expandUsingGranularity(TextGranularity granularity);
- TextGranularity granularity() const { return m_granularity; }
-
- PassRefPtr<Range> toRange() const;
-
- Element* rootEditableElement() const;
- bool isContentEditable() const;
- bool isContentRichlyEditable() const;
- Node* shadowTreeRootNode() const;
-
- void debugPosition() const;
-
-#ifndef NDEBUG
- void formatForDebugger(char* buffer, unsigned length) const;
- void showTreeForThis() const;
-#endif
-
- void setWithoutValidation(const Position&, const Position&);
-
-private:
- void validate();
- void adjustForEditableContent();
-
- Position m_base; // base position for the selection
- Position m_extent; // extent position for the selection
- Position m_start; // start position for the selection
- Position m_end; // end position for the selection
-
- EAffinity m_affinity; // the upstream/downstream affinity of the caret
- TextGranularity m_granularity; // granularity of start/end selection
-
- // these are cached, can be recalculated by validate()
- EState m_state; // the state of the selection
- bool m_baseIsFirst; // true if base is before the extent
-};
-
-inline bool operator==(const Selection& a, const Selection& b)
-{
- return a.start() == b.start() && a.end() == b.end() && a.affinity() == b.affinity() && a.granularity() == b.granularity() && a.isBaseFirst() == b.isBaseFirst();
-}
-
-inline bool operator!=(const Selection& a, const Selection& b)
-{
- return !(a == b);
-}
-
-} // namespace WebCore
-
-#ifndef NDEBUG
-// Outside the WebCore namespace for ease of invocation from gdb.
-void showTree(const WebCore::Selection&);
-void showTree(const WebCore::Selection*);
-#endif
-
-#endif // Selection_h