136 lines
4.7 KiB
C++
136 lines
4.7 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2008 by Sun Microsystems, Inc.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: elementlist.cxx,v $
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* $Revision: 1.7 $
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "elementlist.hxx"
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#include <string.h>
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namespace DOM
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{
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CElementList::CElementList(const CElement* aElement, const OUString& aName)
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: m_pElement(aElement)
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, m_aName(aName)
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, xURI(0)
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, m_bRebuild(sal_True)
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{
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OString o1 = OUStringToOString(aName, RTL_TEXTENCODING_UTF8);
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xName = new xmlChar[o1.getLength()];
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strcpy((char*)xName, o1.getStr());
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registerListener(aElement);
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}
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CElementList::CElementList(const CElement* aElement, const OUString& aName, const OUString& aURI)
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: m_pElement(aElement)
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, m_aName(aName)
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, m_aURI(aURI)
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, m_bRebuild(sal_True)
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{
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OString o1 = OUStringToOString(aName, RTL_TEXTENCODING_UTF8);
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xName = new xmlChar[o1.getLength()];
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strcpy((char*)xName, o1.getStr());
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OString o2 = OUStringToOString(aURI, RTL_TEXTENCODING_UTF8);
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xURI = new xmlChar[o2.getLength()];
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strcpy((char*)xURI, o2.getStr());
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registerListener(aElement);
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}
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void CElementList::registerListener(const CElement* pElement)
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{
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try {
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// get the XNode
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Reference< XNode > xNode(CNode::get(static_cast<const CNode*>(pElement)->m_aNodePtr));
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Reference< XEventTarget > xTarget(xNode, UNO_QUERY_THROW);
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OUString aType = OUString::createFromAscii("DOMSubtreeModified");
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sal_Bool capture = sal_False;
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xTarget->addEventListener(aType, Reference< XEventListener >(this), capture);
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} catch (Exception &e){
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OString aMsg("Exception caught while registering NodeList as listener:\n");
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aMsg += OUStringToOString(e.Message, RTL_TEXTENCODING_ASCII_US);
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OSL_ENSURE(sal_False, aMsg.getStr());
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}
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}
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void CElementList::buildlist(xmlNodePtr pNode, sal_Bool start)
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{
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// bail out if no rebuild is needed
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if (start) {
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if (!m_bRebuild)
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{
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return;
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} else {
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m_nodevector.erase(m_nodevector.begin(), m_nodevector.end());
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m_bRebuild = sal_False; // don't rebuild until tree is mutated
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}
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}
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while (pNode != NULL )
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{
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if (pNode->type == XML_ELEMENT_NODE && strcmp((char*)pNode->name, (char*)xName)==0)
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{
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if (xURI == NULL)
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m_nodevector.push_back(pNode);
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else
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if (pNode->ns != NULL && strcmp((char*)pNode->ns->href, (char*)xURI) == 0)
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m_nodevector.push_back(pNode);
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}
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if (pNode->children != NULL) buildlist(pNode->children, sal_False);
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if (!start) pNode = pNode->next;
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else break; // fold back
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}
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}
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/**
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The number of nodes in the list.
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*/
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sal_Int32 SAL_CALL CElementList::getLength() throw (RuntimeException)
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{
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// this has to be 'live'
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buildlist(static_cast<const CNode*>(m_pElement)->m_aNodePtr);
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return m_nodevector.size();
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}
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/**
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Returns the indexth item in the collection.
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*/
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Reference< XNode > SAL_CALL CElementList::item(sal_Int32 index) throw (RuntimeException)
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{
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if (index < 0) throw RuntimeException();
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buildlist(static_cast<const CNode*>(m_pElement)->m_aNodePtr);
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return Reference< XNode >(CNode::get(m_nodevector[index]));
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}
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// tree mutations can change the list
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void SAL_CALL CElementList::handleEvent(const Reference< XEvent >& evt) throw (RuntimeException)
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{
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Reference< XEvent > aEvent = evt;
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m_bRebuild = sal_True;
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}
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}
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