188 lines
7.5 KiB
C++
188 lines
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* nsRange.h: interface of the nsRange object.
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*/
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#include "nsIDOMRange.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMDocumentFragment.h"
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#include "nsIContent.h"
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#include "nsIDOMNode.h"
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class nsVoidArray;
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class nsRange : public nsIDOMRange
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{
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public:
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NS_DECL_ISUPPORTS
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nsRange();
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virtual ~nsRange();
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// nsIDOMRange interface
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NS_IMETHOD GetIsPositioned(PRBool* aIsPositioned);
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NS_IMETHOD GetStartParent(nsIDOMNode** aStartParent);
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NS_IMETHOD GetStartOffset(PRInt32* aStartOffset);
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NS_IMETHOD GetEndParent(nsIDOMNode** aEndParent);
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NS_IMETHOD GetEndOffset(PRInt32* aEndOffset);
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NS_IMETHOD GetIsCollapsed(PRBool* aIsCollapsed);
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NS_IMETHOD GetCommonParent(nsIDOMNode** aCommonParent);
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NS_IMETHOD SetStart(nsIDOMNode* aParent, PRInt32 aOffset);
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NS_IMETHOD SetStartBefore(nsIDOMNode* aSibling);
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NS_IMETHOD SetStartAfter(nsIDOMNode* aSibling);
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NS_IMETHOD SetEnd(nsIDOMNode* aParent, PRInt32 aOffset);
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NS_IMETHOD SetEndBefore(nsIDOMNode* aSibling);
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NS_IMETHOD SetEndAfter(nsIDOMNode* aSibling);
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NS_IMETHOD Collapse(PRBool aToStart);
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NS_IMETHOD Unposition();
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NS_IMETHOD SelectNode(nsIDOMNode* aN);
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NS_IMETHOD SelectNodeContents(nsIDOMNode* aN);
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NS_IMETHOD CompareEndPoints(PRUint16 how, nsIDOMRange* srcRange, PRInt32* ret);
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NS_IMETHOD DeleteContents();
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NS_IMETHOD ExtractContents(nsIDOMDocumentFragment** aReturn);
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NS_IMETHOD CloneContents(nsIDOMDocumentFragment** aReturn);
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NS_IMETHOD InsertNode(nsIDOMNode* aN);
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NS_IMETHOD SurroundContents(nsIDOMNode* aN);
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NS_IMETHOD Clone(nsIDOMRange** aReturn);
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NS_IMETHOD ToString(nsString& aReturn);
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// nsRange interface extensions
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static NS_METHOD OwnerGone(nsIContent* aParentNode);
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static NS_METHOD OwnerChildInserted(nsIContent* aParentNode, PRInt32 aOffset);
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static NS_METHOD OwnerChildRemoved(nsIContent* aParentNode, PRInt32 aOffset, nsIContent* aRemovedNode);
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static NS_METHOD OwnerChildReplaced(nsIContent* aParentNode, PRInt32 aOffset, nsIContent* aReplacedNode);
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static NS_METHOD TextOwnerChanged(nsIContent* aTextNode, PRInt32 aStartOffset, PRInt32 aEndOffset, PRInt32 aReplaceLength);
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//private: I wish VC++ would give me a &&*@!#$ break
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PRBool mIsPositioned;
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PRInt32 mStartOffset;
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PRInt32 mEndOffset;
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nsCOMPtr<nsIDOMNode> mStartParent;
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nsCOMPtr<nsIDOMNode> mEndParent;
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static nsVoidArray *mStartAncestors; // just keeping these around to avoid reallocing the arrays.
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static nsVoidArray *mEndAncestors; // the contents of these arrays are discarded across calls.
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static nsVoidArray *mStartAncestorOffsets; //
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static nsVoidArray *mEndAncestorOffsets; // XXX - thread safety alert - need to lock usage of these
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// no copy's or assigns
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nsRange(const nsRange&);
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nsRange& operator=(const nsRange&);
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// helper routines
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static PRBool InSameDoc(nsCOMPtr<nsIDOMNode> aNode1, nsCOMPtr<nsIDOMNode> aNode2);
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static PRInt32 IndexOf(nsCOMPtr<nsIDOMNode> aNode);
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static PRInt32 FillArrayWithAncestors(nsVoidArray* aArray,nsCOMPtr<nsIDOMNode> aNode);
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static nsCOMPtr<nsIDOMNode> CommonParent(nsCOMPtr<nsIDOMNode> aNode1, nsCOMPtr<nsIDOMNode> aNode2);
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static nsresult GetDOMNodeFromContent(nsCOMPtr<nsIContent> inContentNode, nsCOMPtr<nsIDOMNode>* outDomNode);
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static nsresult GetContentFromDOMNode(nsCOMPtr<nsIDOMNode> inDomNode, nsCOMPtr<nsIContent>* outContentNode);
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static nsresult PopRanges(nsCOMPtr<nsIDOMNode> aDestNode, PRInt32 aOffset, nsCOMPtr<nsIContent> aSourceNode);
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static nsresult CloneSibsAndParents(nsCOMPtr<nsIDOMNode> parentNode,
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PRInt32 nodeOffset,
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nsCOMPtr<nsIDOMNode> clonedNode,
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nsCOMPtr<nsIDOMNode> commonParent,
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nsCOMPtr<nsIDOMDocumentFragment> docfrag,
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PRBool leftP);
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nsresult DoSetRange(nsCOMPtr<nsIDOMNode> aStartN, PRInt32 aStartOffset,
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nsCOMPtr<nsIDOMNode> aEndN, PRInt32 aEndOffset);
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PRBool IsIncreasing(nsCOMPtr<nsIDOMNode> aStartN, PRInt32 aStartOff,
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nsCOMPtr<nsIDOMNode> aEndN, PRInt32 aEndOff);
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nsresult IsPointInRange(nsCOMPtr<nsIDOMNode> aParent, PRInt32 aOffset, PRBool* aResult);
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nsresult ComparePointToRange(nsCOMPtr<nsIDOMNode> aParent, PRInt32 aOffset, PRInt32* aResult);
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PRInt32 GetAncestorsAndOffsets(nsCOMPtr<nsIDOMNode> aNode, PRInt32 aOffset,
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nsVoidArray* aAncestorNodes, nsVoidArray* aAncestorOffsets);
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nsresult AddToListOf(nsCOMPtr<nsIDOMNode> aNode);
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nsresult RemoveFromListOf(nsCOMPtr<nsIDOMNode> aNode);
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nsresult ContentOwnsUs(nsCOMPtr<nsIDOMNode> domNode);
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};
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// Make a new nsIDOMRange object
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nsresult NS_NewRange(nsIDOMRange** aInstancePtrResult);
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/*************************************************************************************
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* Utility routine to compare two "points", were a point is a node/offset pair
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* Returns -1 if point1 < point2, 1, if point1 > point2,
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* 0 if error or if point1 == point2.
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************************************************************************************/
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PRInt32 ComparePoints(nsIDOMNode* aParent1, PRInt32 aOffset1,
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nsIDOMNode* aParent2, PRInt32 aOffset2);
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/*************************************************************************************
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* Utility routine to detect if a content node intersects a range
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************************************************************************************/
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PRBool IsNodeIntersectsRange(nsIContent* aNode, nsIDOMRange* aRange);
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/*************************************************************************************
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* Utility routine to detect if a content node starts before a range and/or
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* ends after a range. If neither it is contained inside the range.
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*
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* XXX - callers responsibility to ensure node in same doc as range!
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*
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************************************************************************************/
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nsresult CompareNodeToRange(nsIContent* aNode,
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nsIDOMRange* aRange,
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PRBool *outNodeBefore,
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PRBool *outNodeAfter);
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/*************************************************************************************
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* Utility routine to create a pair of dom points to represent
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* the start and end locations of a single node. Return false
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* if we dont' succeed.
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************************************************************************************/
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PRBool GetNodeBracketPoints(nsIContent* aNode,
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nsCOMPtr<nsIDOMNode>* outParent,
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PRInt32* outStartOffset,
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PRInt32* outEndOffset);
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