gecko/editor/libeditor/base/InsertElementTxn.h

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#ifndef InsertElementTxn_h__
#define InsertElementTxn_h__

#include "EditTxn.h"
#include "nsIEditor.h"
#include "nsIDOMNode.h"
#include "nsCOMPtr.h"

/**
 * A transaction that inserts a single element
 */
class InsertElementTxn : public EditTxn
{
public:
  /** 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);

  InsertElementTxn();

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(InsertElementTxn, EditTxn)
  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);

  NS_DECL_EDITTXN

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;
};

#endif