зеркало из https://github.com/mozilla/gecko-dev.git
80 строки
2.9 KiB
Plaintext
80 строки
2.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsISupports.idl"
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interface nsITransaction;
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/*
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* The nsITransactionList interface.
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* <P>
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* The implementation for this interface is provided by the Transaction Manager.
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* This interface provides a mechanism for accessing the transactions on the
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* Undo or Redo stacks as well as any auto-aggragated children that a
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* transaction may have.
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*/
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[scriptable, uuid(97f863f3-f886-11d4-9d39-0060b0f8baff)]
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interface nsITransactionList : nsISupports
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{
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/**
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* The number of transactions contained in this list.
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*/
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readonly attribute long numItems;
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/**
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* itemIsBatch() returns true if the item at aIndex is a batch. Note that
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* currently there is no requirement for a TransactionManager implementation
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* to associate a toplevel nsITransaction with a batch so it is possible for
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* itemIsBatch() to return true and getItem() to return null. However, you
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* can still access the transactions contained in the batch with a call to
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* getChildListForItem().
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* @param aIndex The index of the item in the list.
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*/
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boolean itemIsBatch(in long aIndex);
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/**
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* getItem() returns the transaction at the given index in the list. Note that
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* a null can be returned here if the item is a batch. The transaction
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* returned is AddRef'd so it is up to the caller to Release the transaction
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* when it is done.
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* @param aIndex The index of the item in the list.
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*/
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nsITransaction getItem(in long aIndex);
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/**
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* getNumChildrenForItem() returns the number of child (auto-aggreated)
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* transactions the item at aIndex has.
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* @param aIndex The index of the item in the list.
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*/
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long getNumChildrenForItem(in long aIndex);
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/**
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* getChildListForItem() returns the list of children associated with the
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* item at aIndex. Implementations may return null if there are no children,
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* or an empty list. The list returned is AddRef'd so it is up to the caller
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* to Release the transaction when it is done.
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* @param aIndex The index of the item in the list.
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*/
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nsITransactionList getChildListForItem(in long aIndex);
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};
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