gecko-dev/editor/libeditor/base/nsIEditorSupport.h

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3.9 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#ifndef nsIEditorSupport_h__
#define nsIEditorSupport_h__
#include "nsISupports.h"
class nsIDOMNode;
/*
Private Editor interface for a class that can provide helper functions
*/
#define NS_IEDITORSUPPORT_IID \
{/* 89b999b0-c529-11d2-86da-000064657374*/ \
0x89b999b0, 0xc529, 0x11d2, \
{0x86, 0xda, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
/**
*/
class nsIEditorSupport : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IEDITORSUPPORT_IID)
/**
* SplitNode() creates a new node identical to an existing node, and split the contents between the two nodes
* @param aExistingRightNode the node to split. It will become the new node's next sibling.
* @param aOffset the offset of aExistingRightNode's content|children to do the split at
* @param aNewLeftNode [OUT] the new node resulting from the split, becomes aExistingRightNode's previous sibling.
* @param aParent the parent of aExistingRightNode
*/
NS_IMETHOD SplitNodeImpl(nsIDOMNode * aExistingRightNode,
PRInt32 aOffset,
nsIDOMNode * aNewLeftNode,
nsIDOMNode * aParent)=0;
/**
* JoinNodes() takes 2 nodes and merge their content|children.
* @param aNodeToKeep The node that will remain after the join.
* @param aNodeToJoin The node that will be joined with aNodeToKeep.
* There is no requirement that the two nodes be of the same type.
* @param aParent The parent of aExistingRightNode
* @param aNodeToKeepIsFirst if PR_TRUE, the contents|children of aNodeToKeep come before the
* contents|children of aNodeToJoin, otherwise their positions are switched.
*/
NS_IMETHOD JoinNodesImpl(nsIDOMNode *aNodeToKeep,
nsIDOMNode *aNodeToJoin,
nsIDOMNode *aParent,
PRBool aNodeToKeepIsFirst)=0;
static nsresult GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset);
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIEditorSupport, NS_IEDITORSUPPORT_IID)
#endif //nsIEditorSupport_h__