130 lines
3.1 KiB
C++
130 lines
3.1 KiB
C++
/* -*- 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsDOMNodeList.h"
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#include "nsIDOMNode.h"
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static NS_DEFINE_IID(kIDOMNodeIID, NS_IDOMNODE_IID);
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nsDOMNodeList::nsDOMNodeList(nsIContent *aContent) : mContent(aContent)
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{
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// Note that we don't add a reference to the content (to avoid
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// circular references). The content will tell us if it's going
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// away.
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mRefCnt = 0;
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mScriptObject = nsnull;
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}
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nsDOMNodeList::~nsDOMNodeList()
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{
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}
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nsresult nsDOMNodeList::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kIDOMNodeListIID, NS_IDOMNODELIST_IID);
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static NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
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if (aIID.Equals(kIDOMNodeListIID)) {
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*aInstancePtr = (void*)(nsIDOMNodeList*)this;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(kIScriptObjectOwnerIID)) {
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*aInstancePtr = (void*)(nsIScriptObjectOwner*)this;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(kISupportsIID)) {
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*aInstancePtr = (void*)(nsISupports*)(nsIDOMNodeList*)this;
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AddRef();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMPL_ADDREF(nsDOMNodeList)
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NS_IMPL_RELEASE(nsDOMNodeList)
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nsresult nsDOMNodeList::GetScriptObject(nsIScriptContext *aContext, void** aScriptObject)
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{
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nsresult res = NS_OK;
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if (nsnull == mScriptObject) {
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res = NS_NewScriptNodeList(aContext, this, nsnull, (void**)&mScriptObject);
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}
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*aScriptObject = mScriptObject;
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return res;
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}
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nsresult nsDOMNodeList::ResetScriptObject()
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{
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mScriptObject = nsnull;
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return NS_OK;
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}
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// nsIDOMNodeList interface
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NS_IMETHODIMP
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nsDOMNodeList::GetLength(PRUint32* aLength)
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{
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if (nsnull != mContent) {
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PRInt32 n;
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mContent->ChildCount(n);
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*aLength = PRUint32(n);
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}
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else {
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*aLength = 0;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMNodeList::Item(PRUint32 aIndex, nsIDOMNode** aReturn)
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{
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nsIContent *content = nsnull;
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nsresult res = NS_OK;
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if (nsnull != mContent) {
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mContent->ChildAt(aIndex, content);
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if (nsnull != content) {
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res = content->QueryInterface(kIDOMNodeIID, (void**)aReturn);
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NS_RELEASE(content);
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}
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else {
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*aReturn = nsnull;
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}
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}
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else {
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*aReturn = nsnull;
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}
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return res;
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}
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void
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nsDOMNodeList::ReleaseContent()
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{
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if (nsnull != mContent) {
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mContent = nsnull;
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}
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}
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