171 lines
3.8 KiB
C++
171 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; 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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* Author:
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* Adam Lock <adamlock@netscape.com>
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*
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* Contributor(s):
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*/
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#include "stdafx.h"
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#include "IEHtmlNode.h"
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#include "plhash.h"
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static PLHashTable *g_NodeLookupTable;
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static PLHashNumber PR_CALLBACK HashFunction(const void *key)
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{
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return (PRUint32) key;
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}
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PRIntn PR_CALLBACK HashComparator(const void *v1, const void *v2)
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{
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if (v1 == v2)
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{
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return 0;
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}
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return (v1 > v2) ? 1 : 0;
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}
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CIEHtmlNode::CIEHtmlNode()
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{
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m_pIDOMNode = nsnull;
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m_pIDispParent = NULL;
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}
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CIEHtmlNode::~CIEHtmlNode()
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{
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SetDOMNode(nsnull);
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}
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HRESULT CIEHtmlNode::SetParentNode(IDispatch *pIDispParent)
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{
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m_pIDispParent = pIDispParent;
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return S_OK;
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}
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HRESULT CIEHtmlNode::FindFromDOMNode(nsIDOMNode *pIDOMNode, CIEHtmlNode **pHtmlNode)
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{
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if (pIDOMNode == nsnull)
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{
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return E_FAIL;
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}
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if (g_NodeLookupTable == NULL)
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{
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return E_FAIL;
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}
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nsISupports *pISupports = nsnull;
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pIDOMNode->QueryInterface(NS_GET_IID(nsISupports), (void **) &pISupports);
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NG_ASSERT(pISupports);
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*pHtmlNode = (CIEHtmlNode *) PL_HashTableLookup(g_NodeLookupTable, pISupports);
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NS_RELEASE(pISupports);
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return S_OK;
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}
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HRESULT CIEHtmlNode::SetDOMNode(nsIDOMNode *pIDOMNode)
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{
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if (pIDOMNode)
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{
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NS_IF_RELEASE(m_pIDOMNode);
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m_pIDOMNode = pIDOMNode;
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NS_ADDREF(m_pIDOMNode);
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if (g_NodeLookupTable == NULL)
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{
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g_NodeLookupTable = PL_NewHashTable(123, HashFunction, HashComparator, NULL, NULL, NULL);
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}
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nsISupports *pISupports = nsnull;
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m_pIDOMNode->QueryInterface(NS_GET_IID(nsISupports), (void **) &pISupports);
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PL_HashTableAdd(g_NodeLookupTable, m_pIDOMNode, this);
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NS_RELEASE(pISupports);
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}
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else if (m_pIDOMNode)
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{
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// Remove the entry from the hashtable
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nsISupports *pISupports = nsnull;
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m_pIDOMNode->QueryInterface(NS_GET_IID(nsISupports), (void **) &pISupports);
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PL_HashTableRemove(g_NodeLookupTable, pISupports);
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NS_RELEASE(pISupports);
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if (g_NodeLookupTable->nentries == 0)
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{
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PL_HashTableDestroy(g_NodeLookupTable);
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g_NodeLookupTable = NULL;
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}
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NS_RELEASE(m_pIDOMNode);
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}
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return S_OK;
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}
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HRESULT CIEHtmlNode::GetDOMNode(nsIDOMNode **pIDOMNode)
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{
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if (pIDOMNode == NULL)
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{
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return E_INVALIDARG;
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}
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*pIDOMNode = nsnull;
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if (m_pIDOMNode)
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{
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NS_ADDREF(m_pIDOMNode);
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*pIDOMNode = m_pIDOMNode;
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}
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return S_OK;
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}
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HRESULT CIEHtmlNode::GetDOMElement(nsIDOMElement **pIDOMElement)
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{
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if (pIDOMElement == NULL)
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{
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return E_INVALIDARG;
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}
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if (m_pIDOMNode == nsnull)
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{
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return E_NOINTERFACE;
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}
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*pIDOMElement = nsnull;
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m_pIDOMNode->QueryInterface(NS_GET_IID(nsIDOMElement), (void **) pIDOMElement);
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return (*pIDOMElement) ? S_OK : E_NOINTERFACE;
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}
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HRESULT CIEHtmlNode::GetIDispatch(IDispatch **pDispatch)
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{
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if (pDispatch == NULL)
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{
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return E_INVALIDARG;
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}
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*pDispatch = NULL;
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return E_NOINTERFACE;
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}
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