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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
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #include "nsISupports.idl"
- interface nsITransaction;
-
- /*
- * The nsITransactionList interface.
- * <P>
- * The implementation for this interface is provided by the Transaction Manager.
- * This interface provides a mechanism for accessing the transactions on the
- * Undo or Redo stacks as well as any auto-aggragated children that a
- * transaction may have.
- */
- [scriptable, uuid(97f863f3-f886-11d4-9d39-0060b0f8baff)]
-
- interface nsITransactionList : nsISupports
- {
- /**
- * The number of transactions contained in this list.
- */
- readonly attribute long numItems;
-
- /**
- * itemIsBatch() returns true if the item at aIndex is a batch. Note that
- * currently there is no requirement for a TransactionManager implementation
- * to associate a toplevel nsITransaction with a batch so it is possible for
- * itemIsBatch() to return true and getItem() to return null. However, you
- * can still access the transactions contained in the batch with a call to
- * getChildListForItem().
- * @param aIndex The index of the item in the list.
- */
- boolean itemIsBatch(in long aIndex);
-
- /**
- * getItem() returns the transaction at the given index in the list. Note that
- * a null can be returned here if the item is a batch. The transaction
- * returned is AddRef'd so it is up to the caller to Release the transaction
- * when it is done.
- * @param aIndex The index of the item in the list.
- */
- nsITransaction getItem(in long aIndex);
-
- /**
- * getNumChildrenForItem() returns the number of child (auto-aggreated)
- * transactions the item at aIndex has.
- * @param aIndex The index of the item in the list.
- */
- long getNumChildrenForItem(in long aIndex);
-
- /**
- * getChildListForItem() returns the list of children associated with the
- * item at aIndex. Implementations may return null if there are no children,
- * or an empty list. The list returned is AddRef'd so it is up to the caller
- * to Release the transaction when it is done.
- * @param aIndex The index of the item in the list.
- */
- nsITransactionList getChildListForItem(in long aIndex);
- };
-
-