1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir #include "elementlist.hxx" 29*cdf0e10cSrcweir 30*cdf0e10cSrcweir #include <string.h> 31*cdf0e10cSrcweir 32*cdf0e10cSrcweir #include <element.hxx> 33*cdf0e10cSrcweir #include <document.hxx> 34*cdf0e10cSrcweir 35*cdf0e10cSrcweir 36*cdf0e10cSrcweir namespace DOM 37*cdf0e10cSrcweir { 38*cdf0e10cSrcweir 39*cdf0e10cSrcweir static xmlChar* lcl_initXmlString(::rtl::OUString const& rString) 40*cdf0e10cSrcweir { 41*cdf0e10cSrcweir ::rtl::OString const os = 42*cdf0e10cSrcweir ::rtl::OUStringToOString(rString, RTL_TEXTENCODING_UTF8); 43*cdf0e10cSrcweir xmlChar *const pRet = new xmlChar[os.getLength() + 1]; 44*cdf0e10cSrcweir strcpy(reinterpret_cast<char*>(pRet), os.getStr()); 45*cdf0e10cSrcweir return pRet; 46*cdf0e10cSrcweir } 47*cdf0e10cSrcweir 48*cdf0e10cSrcweir CElementList::CElementList(::rtl::Reference<CElement> const& pElement, 49*cdf0e10cSrcweir ::osl::Mutex & rMutex, 50*cdf0e10cSrcweir OUString const& rName, OUString const*const pURI) 51*cdf0e10cSrcweir : m_pElement(pElement) 52*cdf0e10cSrcweir , m_rMutex(rMutex) 53*cdf0e10cSrcweir , m_pName(lcl_initXmlString(rName)) 54*cdf0e10cSrcweir , m_pURI((pURI) ? lcl_initXmlString(*pURI) : 0) 55*cdf0e10cSrcweir , m_bRebuild(true) 56*cdf0e10cSrcweir { 57*cdf0e10cSrcweir if (m_pElement.is()) { 58*cdf0e10cSrcweir registerListener(*m_pElement); 59*cdf0e10cSrcweir } 60*cdf0e10cSrcweir } 61*cdf0e10cSrcweir 62*cdf0e10cSrcweir void CElementList::registerListener(CElement & rElement) 63*cdf0e10cSrcweir { 64*cdf0e10cSrcweir try { 65*cdf0e10cSrcweir Reference< XEventTarget > const xTarget( 66*cdf0e10cSrcweir static_cast<XElement*>(& rElement), UNO_QUERY_THROW); 67*cdf0e10cSrcweir OUString aType = OUString::createFromAscii("DOMSubtreeModified"); 68*cdf0e10cSrcweir sal_Bool capture = sal_False; 69*cdf0e10cSrcweir xTarget->addEventListener(aType, 70*cdf0e10cSrcweir Reference< XEventListener >(this), capture); 71*cdf0e10cSrcweir } catch (Exception &e){ 72*cdf0e10cSrcweir OString aMsg("Exception caught while registering NodeList as listener:\n"); 73*cdf0e10cSrcweir aMsg += OUStringToOString(e.Message, RTL_TEXTENCODING_ASCII_US); 74*cdf0e10cSrcweir OSL_ENSURE(sal_False, aMsg.getStr()); 75*cdf0e10cSrcweir } 76*cdf0e10cSrcweir } 77*cdf0e10cSrcweir 78*cdf0e10cSrcweir void CElementList::buildlist(xmlNodePtr pNode, sal_Bool start) 79*cdf0e10cSrcweir { 80*cdf0e10cSrcweir // bail out if no rebuild is needed 81*cdf0e10cSrcweir if (start) { 82*cdf0e10cSrcweir if (!m_bRebuild) 83*cdf0e10cSrcweir { 84*cdf0e10cSrcweir return; 85*cdf0e10cSrcweir } else { 86*cdf0e10cSrcweir m_nodevector.erase(m_nodevector.begin(), m_nodevector.end()); 87*cdf0e10cSrcweir m_bRebuild = false; // don't rebuild until tree is mutated 88*cdf0e10cSrcweir } 89*cdf0e10cSrcweir } 90*cdf0e10cSrcweir 91*cdf0e10cSrcweir while (pNode != NULL ) 92*cdf0e10cSrcweir { 93*cdf0e10cSrcweir if (pNode->type == XML_ELEMENT_NODE && 94*cdf0e10cSrcweir (strcmp((char*)pNode->name, (char*)m_pName.get()) == 0)) 95*cdf0e10cSrcweir { 96*cdf0e10cSrcweir if (!m_pURI) { 97*cdf0e10cSrcweir m_nodevector.push_back(pNode); 98*cdf0e10cSrcweir } else { 99*cdf0e10cSrcweir if (pNode->ns != NULL && (0 == 100*cdf0e10cSrcweir strcmp((char*)pNode->ns->href, (char*)m_pURI.get()))) 101*cdf0e10cSrcweir { 102*cdf0e10cSrcweir m_nodevector.push_back(pNode); 103*cdf0e10cSrcweir } 104*cdf0e10cSrcweir } 105*cdf0e10cSrcweir } 106*cdf0e10cSrcweir if (pNode->children != NULL) buildlist(pNode->children, sal_False); 107*cdf0e10cSrcweir 108*cdf0e10cSrcweir if (!start) pNode = pNode->next; 109*cdf0e10cSrcweir else break; // fold back 110*cdf0e10cSrcweir } 111*cdf0e10cSrcweir } 112*cdf0e10cSrcweir 113*cdf0e10cSrcweir /** 114*cdf0e10cSrcweir The number of nodes in the list. 115*cdf0e10cSrcweir */ 116*cdf0e10cSrcweir sal_Int32 SAL_CALL CElementList::getLength() throw (RuntimeException) 117*cdf0e10cSrcweir { 118*cdf0e10cSrcweir ::osl::MutexGuard const g(m_rMutex); 119*cdf0e10cSrcweir 120*cdf0e10cSrcweir if (!m_pElement.is()) { return 0; } 121*cdf0e10cSrcweir 122*cdf0e10cSrcweir // this has to be 'live' 123*cdf0e10cSrcweir buildlist(m_pElement->GetNodePtr()); 124*cdf0e10cSrcweir return m_nodevector.size(); 125*cdf0e10cSrcweir } 126*cdf0e10cSrcweir /** 127*cdf0e10cSrcweir Returns the indexth item in the collection. 128*cdf0e10cSrcweir */ 129*cdf0e10cSrcweir Reference< XNode > SAL_CALL CElementList::item(sal_Int32 index) 130*cdf0e10cSrcweir throw (RuntimeException) 131*cdf0e10cSrcweir { 132*cdf0e10cSrcweir if (index < 0) throw RuntimeException(); 133*cdf0e10cSrcweir 134*cdf0e10cSrcweir ::osl::MutexGuard const g(m_rMutex); 135*cdf0e10cSrcweir 136*cdf0e10cSrcweir if (!m_pElement.is()) { return 0; } 137*cdf0e10cSrcweir 138*cdf0e10cSrcweir buildlist(m_pElement->GetNodePtr()); 139*cdf0e10cSrcweir if (m_nodevector.size() <= static_cast<size_t>(index)) { 140*cdf0e10cSrcweir throw RuntimeException(); 141*cdf0e10cSrcweir } 142*cdf0e10cSrcweir Reference< XNode > const xRet( 143*cdf0e10cSrcweir m_pElement->GetOwnerDocument().GetCNode(m_nodevector[index]).get()); 144*cdf0e10cSrcweir return xRet; 145*cdf0e10cSrcweir } 146*cdf0e10cSrcweir 147*cdf0e10cSrcweir // tree mutations can change the list 148*cdf0e10cSrcweir void SAL_CALL CElementList::handleEvent(Reference< XEvent > const&) 149*cdf0e10cSrcweir throw (RuntimeException) 150*cdf0e10cSrcweir { 151*cdf0e10cSrcweir ::osl::MutexGuard const g(m_rMutex); 152*cdf0e10cSrcweir 153*cdf0e10cSrcweir m_bRebuild = true; 154*cdf0e10cSrcweir } 155*cdf0e10cSrcweir } 156