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/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
* (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
* (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "FloatRect.h"
#include "FragmentScriptingPermission.h"
#include "IntRect.h"
#include "RangeBoundaryPoint.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
namespace WebCore {
class ClientRect;
class ClientRectList;
class ContainerNode;
class Document;
class DocumentFragment;
class FloatQuad;
class Node;
class NodeWithIndex;
class SelectionRect;
class Text;
class VisiblePosition;
class Range : public RefCounted<Range> {
public:
WEBCORE_EXPORT static Ref<Range> create(Document&);
WEBCORE_EXPORT static Ref<Range> create(Document&, RefPtr<Node>&& startContainer, int startOffset, RefPtr<Node>&& endContainer, int endOffset);
WEBCORE_EXPORT static Ref<Range> create(Document&, const Position&, const Position&);
WEBCORE_EXPORT static Ref<Range> create(Document&, const VisiblePosition&, const VisiblePosition&);
WEBCORE_EXPORT ~Range();
Document& ownerDocument() const { return m_ownerDocument; }
Node& startContainer() const { ASSERT(m_start.container()); return *m_start.container(); }
unsigned startOffset() const { return m_start.offset(); }
Node& endContainer() const { ASSERT(m_end.container()); return *m_end.container(); }
unsigned endOffset() const { return m_end.offset(); }
bool collapsed() const { return m_start == m_end; }
Node* commonAncestorContainer() const { return commonAncestorContainer(&startContainer(), &endContainer()); }
WEBCORE_EXPORT static Node* commonAncestorContainer(Node* containerA, Node* containerB);
WEBCORE_EXPORT ExceptionOr<void> setStart(Ref<Node>&& container, unsigned offset);
WEBCORE_EXPORT ExceptionOr<void> setEnd(Ref<Node>&& container, unsigned offset);
WEBCORE_EXPORT void collapse(bool toStart);
WEBCORE_EXPORT ExceptionOr<bool> isPointInRange(Node& refNode, unsigned offset);
WEBCORE_EXPORT ExceptionOr<short> comparePoint(Node& refNode, unsigned offset) const;
enum CompareResults { NODE_BEFORE, NODE_AFTER, NODE_BEFORE_AND_AFTER, NODE_INSIDE };
WEBCORE_EXPORT ExceptionOr<CompareResults> compareNode(Node& refNode) const;
enum CompareHow { START_TO_START, START_TO_END, END_TO_END, END_TO_START };
WEBCORE_EXPORT ExceptionOr<short> compareBoundaryPoints(CompareHow, const Range& sourceRange) const;
WEBCORE_EXPORT ExceptionOr<short> compareBoundaryPointsForBindings(unsigned short compareHow, const Range& sourceRange) const;
static ExceptionOr<short> compareBoundaryPoints(Node* containerA, unsigned offsetA, Node* containerB, unsigned offsetB);
static ExceptionOr<short> compareBoundaryPoints(const RangeBoundaryPoint& boundaryA, const RangeBoundaryPoint& boundaryB);
WEBCORE_EXPORT bool boundaryPointsValid() const;
WEBCORE_EXPORT ExceptionOr<bool> intersectsNode(Node& refNode) const;
WEBCORE_EXPORT ExceptionOr<void> deleteContents();
WEBCORE_EXPORT ExceptionOr<Ref<DocumentFragment>> extractContents();
WEBCORE_EXPORT ExceptionOr<Ref<DocumentFragment>> cloneContents();
WEBCORE_EXPORT ExceptionOr<void> insertNode(Ref<Node>&&);
WEBCORE_EXPORT String toString() const;
String toHTML() const;
WEBCORE_EXPORT String text() const;
WEBCORE_EXPORT ExceptionOr<Ref<DocumentFragment>> createContextualFragment(const String& html);
WEBCORE_EXPORT void detach();
WEBCORE_EXPORT Ref<Range> cloneRange() const;
WEBCORE_EXPORT ExceptionOr<void> setStartAfter(Node&);
WEBCORE_EXPORT ExceptionOr<void> setEndBefore(Node&);
WEBCORE_EXPORT ExceptionOr<void> setEndAfter(Node&);
WEBCORE_EXPORT ExceptionOr<void> selectNode(Node&);
WEBCORE_EXPORT ExceptionOr<void> selectNodeContents(Node&);
WEBCORE_EXPORT ExceptionOr<void> surroundContents(Node&);
WEBCORE_EXPORT ExceptionOr<void> setStartBefore(Node&);
const Position startPosition() const { return m_start.toPosition(); }
const Position endPosition() const { return m_end.toPosition(); }
WEBCORE_EXPORT ExceptionOr<void> setStart(const Position&);
WEBCORE_EXPORT ExceptionOr<void> setEnd(const Position&);
WEBCORE_EXPORT Node* firstNode() const;
WEBCORE_EXPORT Node* pastLastNode() const;
ShadowRoot* shadowRoot() const;
enum RangeInFixedPosition {
NotFixedPosition,
PartiallyFixedPosition,
EntirelyFixedPosition
};
// Not transform-friendly
WEBCORE_EXPORT void absoluteTextRects(Vector<IntRect>&, bool useSelectionHeight = false, RangeInFixedPosition* = nullptr) const;
WEBCORE_EXPORT IntRect absoluteBoundingBox() const;
// Transform-friendly
WEBCORE_EXPORT void absoluteTextQuads(Vector<FloatQuad>&, bool useSelectionHeight = false, RangeInFixedPosition* = nullptr) const;
WEBCORE_EXPORT FloatRect absoluteBoundingRect() const;
#if PLATFORM(IOS)
WEBCORE_EXPORT void collectSelectionRects(Vector<SelectionRect>&);
WEBCORE_EXPORT int collectSelectionRectsWithoutUnionInteriorLines(Vector<SelectionRect>&);
#endif
void nodeChildrenChanged(ContainerNode&);
void nodeChildrenWillBeRemoved(ContainerNode&);
void nodeWillBeRemoved(Node&);
void textInserted(Node*, unsigned offset, unsigned length);
void textRemoved(Node*, unsigned offset, unsigned length);
void textNodesMerged(NodeWithIndex& oldNode, unsigned offset);
void textNodeSplit(Text* oldNode);
// Expand range to a unit (word or sentence or block or document) boundary.
// Please refer to https://bugs.webkit.org/show_bug.cgi?id=27632 comment #5
// for details.
WEBCORE_EXPORT ExceptionOr<void> expand(const String&);
Ref<ClientRectList> getClientRects() const;
Ref<ClientRect> getBoundingClientRect() const;
#if ENABLE(TREE_DEBUGGING)
void formatForDebugger(char* buffer, unsigned length) const;
#endif
WEBCORE_EXPORT bool contains(const Range&) const;
bool contains(const VisiblePosition&) const;
enum ActionType { Delete, Extract, Clone };
private:
explicit Range(Document&);
Range(Document&, Node* startContainer, int startOffset, Node* endContainer, int endOffset);
void setDocument(Document&);
ExceptionOr<Node*> checkNodeWOffset(Node&, unsigned offset) const;
ExceptionOr<RefPtr<DocumentFragment>> processContents(ActionType);
enum class CoordinateSpace { Absolute, Client };
Vector<FloatQuad> borderAndTextQuads(CoordinateSpace) const;
FloatRect boundingRect(CoordinateSpace) const;
Ref<Document> m_ownerDocument;
RangeBoundaryPoint m_start;
RangeBoundaryPoint m_end;
};
WEBCORE_EXPORT Ref<Range> rangeOfContents(Node&);
WEBCORE_EXPORT bool areRangesEqual(const Range*, const Range*);
bool rangesOverlap(const Range*, const Range*);
inline bool documentOrderComparator(const Node* a, const Node* b)
{
return Range::compareBoundaryPoints(const_cast<Node*>(a), 0, const_cast<Node*>(b), 0).releaseReturnValue() < 0;
}
} // namespace
#if ENABLE(TREE_DEBUGGING)
// Outside the WebCore namespace for ease of invocation from the debugger.
void showTree(const WebCore::Range*);
#endif
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