зеркало из https://github.com/mozilla/pjs.git
85 строки
3.0 KiB
C++
85 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:ts=2:et:sw=2:
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* used by nsCSSFrameConstructor to determine and iterate the child list
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* used to construct frames (normal children or something from XBL)
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*/
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#include "nsChildIterator.h"
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#include "nsIDocument.h"
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#include "nsBindingManager.h"
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nsresult
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ChildIterator::Init(nsIContent* aContent,
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ChildIterator* aFirst,
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ChildIterator* aLast)
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{
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// Initialize out parameters to be equal, in case of failure.
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aFirst->mContent = aLast->mContent = nsnull;
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aFirst->mIndex = aLast->mIndex = 0;
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NS_PRECONDITION(aContent != nsnull, "no content");
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if (! aContent)
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return NS_ERROR_NULL_POINTER;
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nsIDocument* doc = aContent->GetOwnerDoc();
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NS_ASSERTION(doc, "element not in the document");
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if (! doc)
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return NS_ERROR_FAILURE;
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// If this node has XBL children, then use them. Otherwise, just use
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// the vanilla content APIs.
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nsINodeList* nodes = doc->BindingManager()->GetXBLChildNodesFor(aContent);
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PRUint32 length;
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if (nodes)
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nodes->GetLength(&length);
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else
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length = aContent->GetChildCount();
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aFirst->mContent = aContent;
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aLast->mContent = aContent;
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aFirst->mIndex = 0;
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aLast->mIndex = length;
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aFirst->mNodes = nodes;
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aLast->mNodes = nodes;
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return NS_OK;
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}
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