gecko/editor/libeditor/base/nsIEditorSupport.h
2012-05-21 12:12:37 +01:00

66 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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 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,
bool aNodeToKeepIsFirst)=0;
static nsresult GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset);
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIEditorSupport, NS_IEDITORSUPPORT_IID)
#endif //nsIEditorSupport_h__