RetroZilla/editor/libeditor/base/InsertElementTxn.h
2015-10-20 23:03:22 -04:00

104 lines
3.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* The contents of this file are subject to the Mozilla Public License Version
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* The Original Code is mozilla.org code.
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#ifndef InsertElementTxn_h__
#define InsertElementTxn_h__
#include "EditTxn.h"
#include "nsIEditor.h"
#include "nsIDOMNode.h"
#include "nsCOMPtr.h"
#define INSERT_ELEMENT_TXN_CID \
{/* b5762440-cbb0-11d2-86db-000064657374 */ \
0xb5762440, 0xcbb0, 0x11d2, \
{0x86, 0xdb, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
/**
* A transaction that inserts a single element
*/
class InsertElementTxn : public EditTxn
{
public:
static const nsIID& GetCID() { static const nsIID iid = INSERT_ELEMENT_TXN_CID; return iid; }
/** initialize the transaction.
* @param aNode the node to insert
* @param aParent the node to insert into
* @param aOffset the offset in aParent to insert aNode
*/
NS_IMETHOD Init(nsIDOMNode *aNode,
nsIDOMNode *aParent,
PRInt32 aOffset,
nsIEditor *aEditor);
private:
InsertElementTxn();
public:
virtual ~InsertElementTxn();
NS_IMETHOD DoTransaction(void);
NS_IMETHOD UndoTransaction(void);
NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
NS_IMETHOD GetTxnDescription(nsAString& aTxnDescription);
protected:
/** the element to insert */
nsCOMPtr<nsIDOMNode> mNode;
/** the node into which the new node will be inserted */
nsCOMPtr<nsIDOMNode> mParent;
/** the editor for this transaction */
nsIEditor* mEditor;
/** the index in mParent for the new node */
PRInt32 mOffset;
friend class TransactionFactory;
};
#endif