| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #include "elementlist.hxx" |
| |
| #include <string.h> |
| |
| #include <element.hxx> |
| #include <document.hxx> |
| |
| |
| namespace DOM |
| { |
| |
| static xmlChar* lcl_initXmlString(::rtl::OUString const& rString) |
| { |
| ::rtl::OString const os = |
| ::rtl::OUStringToOString(rString, RTL_TEXTENCODING_UTF8); |
| xmlChar *const pRet = new xmlChar[os.getLength() + 1]; |
| strcpy(reinterpret_cast<char*>(pRet), os.getStr()); |
| return pRet; |
| } |
| |
| CElementList::CElementList(::rtl::Reference<CElement> const& pElement, |
| ::osl::Mutex & rMutex, |
| OUString const& rName, OUString const*const pURI) |
| : m_pElement(pElement) |
| , m_rMutex(rMutex) |
| , m_pName(lcl_initXmlString(rName)) |
| , m_pURI((pURI) ? lcl_initXmlString(*pURI) : 0) |
| , m_bRebuild(true) |
| { |
| if (m_pElement.is()) { |
| registerListener(*m_pElement); |
| } |
| } |
| |
| void CElementList::registerListener(CElement & rElement) |
| { |
| try { |
| Reference< XEventTarget > const xTarget( |
| static_cast<XElement*>(& rElement), UNO_QUERY_THROW); |
| OUString aType = OUString::createFromAscii("DOMSubtreeModified"); |
| sal_Bool capture = sal_False; |
| xTarget->addEventListener(aType, |
| Reference< XEventListener >(this), capture); |
| } catch (Exception &e){ |
| OString aMsg("Exception caught while registering NodeList as listener:\n"); |
| aMsg += OUStringToOString(e.Message, RTL_TEXTENCODING_ASCII_US); |
| OSL_ENSURE(sal_False, aMsg.getStr()); |
| } |
| } |
| |
| void CElementList::buildlist(xmlNodePtr pNode, sal_Bool start) |
| { |
| // bail out if no rebuild is needed |
| if (start) { |
| if (!m_bRebuild) |
| { |
| return; |
| } else { |
| m_nodevector.erase(m_nodevector.begin(), m_nodevector.end()); |
| m_bRebuild = false; // don't rebuild until tree is mutated |
| } |
| } |
| |
| while (pNode != NULL ) |
| { |
| if (pNode->type == XML_ELEMENT_NODE && |
| (strcmp((char*)pNode->name, (char*)m_pName.get()) == 0)) |
| { |
| if (!m_pURI) { |
| m_nodevector.push_back(pNode); |
| } else { |
| if (pNode->ns != NULL && (0 == |
| strcmp((char*)pNode->ns->href, (char*)m_pURI.get()))) |
| { |
| m_nodevector.push_back(pNode); |
| } |
| } |
| } |
| if (pNode->children != NULL) buildlist(pNode->children, sal_False); |
| |
| if (!start) pNode = pNode->next; |
| else break; // fold back |
| } |
| } |
| |
| /** |
| The number of nodes in the list. |
| */ |
| sal_Int32 SAL_CALL CElementList::getLength() throw (RuntimeException) |
| { |
| ::osl::MutexGuard const g(m_rMutex); |
| |
| if (!m_pElement.is()) { return 0; } |
| |
| // this has to be 'live' |
| buildlist(m_pElement->GetNodePtr()); |
| return m_nodevector.size(); |
| } |
| /** |
| Returns the indexth item in the collection. |
| */ |
| Reference< XNode > SAL_CALL CElementList::item(sal_Int32 index) |
| throw (RuntimeException) |
| { |
| if (index < 0) throw RuntimeException(); |
| |
| ::osl::MutexGuard const g(m_rMutex); |
| |
| if (!m_pElement.is()) { return 0; } |
| |
| buildlist(m_pElement->GetNodePtr()); |
| if (m_nodevector.size() <= static_cast<size_t>(index)) { |
| throw RuntimeException(); |
| } |
| Reference< XNode > const xRet( |
| m_pElement->GetOwnerDocument().GetCNode(m_nodevector[index]).get()); |
| return xRet; |
| } |
| |
| // tree mutations can change the list |
| void SAL_CALL CElementList::handleEvent(Reference< XEvent > const&) |
| throw (RuntimeException) |
| { |
| ::osl::MutexGuard const g(m_rMutex); |
| |
| m_bRebuild = true; |
| } |
| } |