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Diffstat (limited to 'unoxml/source/dom/node.cxx')
| -rw-r--r-- | unoxml/source/dom/node.cxx | 984 |
1 files changed, 984 insertions, 0 deletions
diff --git a/unoxml/source/dom/node.cxx b/unoxml/source/dom/node.cxx new file mode 100644 index 000000000..32cbedc0e --- /dev/null +++ b/unoxml/source/dom/node.cxx @@ -0,0 +1,984 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +#include <node.hxx> + +#include <string.h> + +#include <libxml/xmlstring.h> + +#include <algorithm> + +#include <osl/mutex.hxx> +#include <osl/diagnose.h> +#include <sal/log.hxx> + +#include <com/sun/star/xml/dom/DOMException.hpp> +#include <com/sun/star/xml/dom/events/XMutationEvent.hpp> +#include <com/sun/star/xml/sax/FastToken.hpp> + +#include <comphelper/servicehelper.hxx> + +#include "document.hxx" +#include "attr.hxx" +#include "childlist.hxx" + +#include <eventdispatcher.hxx> + +using namespace css; +using namespace css::uno; +using namespace css::xml::dom; +using namespace css::xml::dom::events; +using namespace css::xml::sax; + +namespace DOM +{ + void pushContext(Context& io_rContext) + { + // Explicitly use a temp. variable. + // Windows/VC++ seems to mess up if .back() is directly passed as + // parameter. i.e. Don't use push_back( .back() ); + Context::NamespaceVectorType::value_type aVal = io_rContext.maNamespaces.back(); + io_rContext.maNamespaces.push_back( aVal ); + } + + void popContext(Context& io_rContext) + { + io_rContext.maNamespaces.pop_back(); + } + + void addNamespaces(Context& io_rContext, xmlNodePtr pNode) + { + // add node's namespaces to current context + for (xmlNsPtr pNs = pNode->nsDef; pNs != nullptr; pNs = pNs->next) { + const xmlChar *pPrefix = pNs->prefix; + // prefix can be NULL when xmlns attribute is empty (xmlns="") + OString prefix(reinterpret_cast<const char*>(pPrefix), + pPrefix ? strlen(reinterpret_cast<const char*>(pPrefix)) : 0); + const xmlChar *pHref = pNs->href; + OUString val(reinterpret_cast<const char*>(pHref), + strlen(reinterpret_cast<const char*>(pHref)), + RTL_TEXTENCODING_UTF8); + + Context::NamespaceMapType::iterator aIter= + io_rContext.maNamespaceMap.find(val); + if( aIter != io_rContext.maNamespaceMap.end() ) + { + Context::Namespace aNS; + aNS.maPrefix = prefix; + aNS.mnToken = aIter->second; + + io_rContext.maNamespaces.back().push_back(aNS); + + SAL_INFO("unoxml", "Added with token " << aIter->second); + } + } + } + + sal_Int32 getToken( const Context& rContext, const char* pToken ) + { + const Sequence<sal_Int8> aSeq( reinterpret_cast<sal_Int8 const *>(pToken), strlen( pToken ) ); + return rContext.mxTokenHandler->getTokenFromUTF8( aSeq ); + } + + sal_Int32 getTokenWithPrefix( const Context& rContext, const char* pPrefix, const char* pName ) + { + sal_Int32 nNamespaceToken = FastToken::DONTKNOW; + OString prefix(pPrefix, + strlen(pPrefix)); + + SAL_INFO("unoxml", "getTokenWithPrefix(): prefix " << pPrefix << ", name " << pName); + + Context::NamespaceVectorType::value_type::const_iterator aIter; + if( (aIter=std::find_if(rContext.maNamespaces.back().begin(), + rContext.maNamespaces.back().end(), + [&prefix](const Context::Namespace &aNamespace){ return aNamespace.getPrefix() == prefix; } )) != + rContext.maNamespaces.back().end() ) + { + nNamespaceToken = aIter->mnToken; + sal_Int32 nNameToken = getToken( rContext, pName ); + if( nNameToken == FastToken::DONTKNOW ) + nNamespaceToken = FastToken::DONTKNOW; + else + nNamespaceToken |= nNameToken; + } + + return nNamespaceToken; + } + + + CNode::CNode(CDocument const& rDocument, ::osl::Mutex const& rMutex, + NodeType const& reNodeType, xmlNodePtr const& rpNode) + : m_bUnlinked(false) + , m_aNodeType(reNodeType) + , m_aNodePtr(rpNode) + // keep containing document alive + // (but not if this is a document; that would create a leak!) + , m_xDocument( (m_aNodePtr->type != XML_DOCUMENT_NODE) + ? &const_cast<CDocument&>(rDocument) : nullptr ) + , m_rMutex(const_cast< ::osl::Mutex & >(rMutex)) + { + OSL_ASSERT(m_aNodePtr); + } + + void CNode::invalidate() + { + //remove from list if this wrapper goes away + if (m_aNodePtr != nullptr && m_xDocument.is()) { + m_xDocument->RemoveCNode(m_aNodePtr, this); + } + // #i113663#: unlinked nodes will not be freed by xmlFreeDoc + if (m_bUnlinked) { + xmlFreeNode(m_aNodePtr); + } + m_aNodePtr = nullptr; + } + + CNode::~CNode() + { + // if this is the document itself, the mutex is already freed! + if (NodeType_DOCUMENT_NODE == m_aNodeType) { + invalidate(); + } else { + ::osl::MutexGuard const g(m_rMutex); + invalidate(); // other nodes are still alive so must lock mutex + } + } + + const css::uno::Sequence< sal_Int8 > & CNode::getUnoTunnelId() noexcept + { + static const comphelper::UnoIdInit theCNodeUnoTunnelId; + return theCNodeUnoTunnelId.getSeq(); + } + + CDocument & CNode::GetOwnerDocument() + { + OSL_ASSERT(m_xDocument.is()); + return *m_xDocument; // needs overriding in CDocument! + } + + + static void lcl_nsexchange( + xmlNodePtr const aNode, xmlNsPtr const oldNs, xmlNsPtr const newNs) + { + // recursively exchange any references to oldNs with references to newNs + xmlNodePtr cur = aNode; + while (cur != nullptr) + { + if (cur->ns == oldNs) + cur->ns = newNs; + if (cur->type == XML_ELEMENT_NODE) + { + xmlAttrPtr curAttr = cur->properties; + while(curAttr != nullptr) + { + if (curAttr->ns == oldNs) + curAttr->ns = newNs; + curAttr = curAttr->next; + } + lcl_nsexchange(cur->children, oldNs, newNs); + } + cur = cur->next; + } + } + + /*static*/ void nscleanup(const xmlNodePtr aNode, const xmlNodePtr aParent) + { + xmlNodePtr cur = aNode; + + //handle attributes + if (cur != nullptr && cur->type == XML_ELEMENT_NODE) + { + xmlAttrPtr curAttr = cur->properties; + while(curAttr != nullptr) + { + if (curAttr->ns != nullptr) + { + xmlNsPtr ns = xmlSearchNs(cur->doc, aParent, curAttr->ns->prefix); + if (ns != nullptr) + curAttr->ns = ns; + } + curAttr = curAttr->next; + } + } + + while (cur != nullptr) + { + nscleanup(cur->children, cur); + if (cur->ns != nullptr) + { + xmlNsPtr ns = xmlSearchNs(cur->doc, aParent, cur->ns->prefix); + if (ns != nullptr && ns != cur->ns && strcmp(reinterpret_cast<char const *>(ns->href), reinterpret_cast<char const *>(cur->ns->href))==0) + { + xmlNsPtr curDef = cur->nsDef; + xmlNsPtr *refp = &(cur->nsDef); // insert point + while (curDef != nullptr) + { + ns = xmlSearchNs(cur->doc, aParent, curDef->prefix); + if (ns != nullptr && ns != curDef && strcmp(reinterpret_cast<char const *>(ns->href), reinterpret_cast<char const *>(curDef->href))==0) + { + // reconnect ns pointers in sub-tree to newly found ns before + // removing redundant nsdecl to prevent dangling pointers. + lcl_nsexchange(cur, curDef, ns); + *refp = curDef->next; + xmlFreeNs(curDef); + curDef = *refp; + } else { + refp = &(curDef->next); + curDef = curDef->next; + } + } + } + } + cur = cur->next; + } + } + + void CNode::saxify(const Reference< XDocumentHandler >& i_xHandler) + { + if (!i_xHandler.is()) throw RuntimeException(); + // default: do nothing + } + + void CNode::fastSaxify(Context& io_rContext) + { + if (!io_rContext.mxDocHandler.is()) throw RuntimeException(); + // default: do nothing + } + + bool CNode::IsChildTypeAllowed(NodeType const /*nodeType*/, NodeType const*const) + { + // default: no children allowed + return false; + } + + /** + Adds the node newChild to the end of the list of children of this node. + */ + Reference< XNode > SAL_CALL CNode::appendChild( + Reference< XNode > const& xNewChild) + { + ::osl::ClearableMutexGuard guard(m_rMutex); + + if (nullptr == m_aNodePtr) { return nullptr; } + + CNode *const pNewChild(comphelper::getFromUnoTunnel<CNode>(xNewChild)); + if (!pNewChild) { throw RuntimeException(); } + xmlNodePtr const cur = pNewChild->GetNodePtr(); + if (!cur) { throw RuntimeException(); } + + // error checks: + // from other document + if (cur->doc != m_aNodePtr->doc) { + DOMException e; + e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR; + throw e; + } + // same node + if (cur == m_aNodePtr) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + if (cur->parent != nullptr) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + if (!IsChildTypeAllowed(pNewChild->m_aNodeType, nullptr)) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + // check whether this is an attribute node; it needs special handling + xmlNodePtr res = nullptr; + if (cur->type == XML_ATTRIBUTE_NODE) + { + xmlChar const*const pChildren((cur->children) + ? cur->children->content + : reinterpret_cast<xmlChar const*>("")); + CAttr *const pCAttr(dynamic_cast<CAttr *>(pNewChild)); + if (!pCAttr) { throw RuntimeException(); } + xmlNsPtr const pNs( pCAttr->GetNamespace(m_aNodePtr) ); + if (pNs) { + res = reinterpret_cast<xmlNodePtr>( + xmlNewNsProp(m_aNodePtr, pNs, cur->name, pChildren)); + } else { + res = reinterpret_cast<xmlNodePtr>( + xmlNewProp(m_aNodePtr, cur->name, pChildren)); + } + } + else + { + res = xmlAddChild(m_aNodePtr, cur); + + // libxml can do optimization when appending nodes. + // if res != cur, something was optimized and the newchild-wrapper + // should be updated + if (res && (cur != res)) { + pNewChild->invalidate(); // cur has been freed + } + } + + if (!res) { return nullptr; } + + // use custom ns cleanup instead of + // xmlReconciliateNs(m_aNodePtr->doc, m_aNodePtr); + // because that will not remove unneeded ns decls + nscleanup(res, m_aNodePtr); + + ::rtl::Reference<CNode> const pNode = GetOwnerDocument().GetCNode(res); + + if (!pNode.is()) { return nullptr; } + + // dispatch DOMNodeInserted event, target is the new node + // this node is the related node + // does bubble + pNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc + Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY); + Reference< XMutationEvent > event(docevent->createEvent( + "DOMNodeInserted"), UNO_QUERY); + event->initMutationEvent("DOMNodeInserted", true, false, this, + OUString(), OUString(), OUString(), AttrChangeType(0) ); + + // the following dispatch functions use only UNO interfaces + // and call event listeners, so release mutex to prevent deadlocks. + guard.clear(); + + dispatchEvent(event); + // dispatch subtree modified for this node + dispatchSubtreeModified(); + + return pNode; + } + + /** + Returns a duplicate of this node, i.e., serves as a generic copy + constructor for nodes. + */ + Reference< XNode > SAL_CALL CNode::cloneNode(sal_Bool bDeep) + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + ::rtl::Reference<CNode> const pNode = GetOwnerDocument().GetCNode( + xmlCopyNode(m_aNodePtr, bDeep ? 1 : 0)); + if (!pNode.is()) { return nullptr; } + pNode->m_bUnlinked = true; // not linked yet + return pNode; + } + + /** + A NamedNodeMap containing the attributes of this node (if it is an Element) + or null otherwise. + */ + Reference< XNamedNodeMap > SAL_CALL CNode::getAttributes() + { + // return empty reference; only element node may override this impl + return Reference< XNamedNodeMap>(); + } + + /** + A NodeList that contains all children of this node. + */ + Reference< XNodeList > SAL_CALL CNode::getChildNodes() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + Reference< XNodeList > const xNodeList(new CChildList(this, m_rMutex)); + return xNodeList; + } + + /** + The first child of this node. + */ + Reference< XNode > SAL_CALL CNode::getFirstChild() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + return GetOwnerDocument().GetCNode(m_aNodePtr->children); + } + + /** + The last child of this node. + */ + Reference< XNode > SAL_CALL CNode::getLastChild() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + return GetOwnerDocument().GetCNode(xmlGetLastChild(m_aNodePtr)); + } + + /** + Returns the local part of the qualified name of this node. + */ + OUString SAL_CALL CNode::getLocalName() + { + // see CElement/CAttr + return OUString(); + } + + + /** + The namespace URI of this node, or null if it is unspecified. + */ + OUString SAL_CALL CNode::getNamespaceURI() + { + ::osl::MutexGuard const g(m_rMutex); + + OUString aURI; + if (m_aNodePtr != nullptr && + (m_aNodePtr->type == XML_ELEMENT_NODE || m_aNodePtr->type == XML_ATTRIBUTE_NODE) && + m_aNodePtr->ns != nullptr) + { + const xmlChar* pHref = m_aNodePtr->ns->href; + aURI = OUString(reinterpret_cast<char const *>(pHref), strlen(reinterpret_cast<char const *>(pHref)), RTL_TEXTENCODING_UTF8); + } + return aURI; + } + + /** + The node immediately following this node. + */ + Reference< XNode > SAL_CALL CNode::getNextSibling() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + return GetOwnerDocument().GetCNode(m_aNodePtr->next); + } + + /** + The name of this node, depending on its type; see the table above. + */ + OUString SAL_CALL CNode::getNodeName() + { + /* + Interface nodeName nodeValue attributes + -------------------------------------------------------------------------------------- + Attr name of attribute value of attribute null + CDATASection "#cdata-section" content of the CDATA Section null + Comment "#comment" content of the comment null + Document "#document" null null + DocumentFragment "#document-fragment" null null + DocumentType document type name null null + Element tag name null NamedNodeMap + Entity entity name null null + EntityReference name of entity null null + referenced + Notation notation name null null + Processing\ target entire content excluding null + Instruction the target + Text "#text" content of the text node null + */ + return OUString(); + } + + /** + A code representing the type of the underlying object, as defined above. + */ + NodeType SAL_CALL CNode::getNodeType() + { + ::osl::MutexGuard const g(m_rMutex); + + return m_aNodeType; + } + + /** + The value of this node, depending on its type; see the table above. + */ + OUString SAL_CALL CNode::getNodeValue() + { + return OUString(); + } + + /** + The Document object associated with this node. + */ + Reference< XDocument > SAL_CALL CNode::getOwnerDocument() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + Reference< XDocument > const xDoc(& GetOwnerDocument()); + return xDoc; + } + + /** + The parent of this node. + */ + Reference< XNode > SAL_CALL CNode::getParentNode() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + return GetOwnerDocument().GetCNode(m_aNodePtr->parent); + } + + /** + The namespace prefix of this node, or null if it is unspecified. + */ + OUString SAL_CALL CNode::getPrefix() + { + ::osl::MutexGuard const g(m_rMutex); + + OUString aPrefix; + if (m_aNodePtr != nullptr && + (m_aNodePtr->type == XML_ELEMENT_NODE || m_aNodePtr->type == XML_ATTRIBUTE_NODE) && + m_aNodePtr->ns != nullptr) + { + const xmlChar* pPrefix = m_aNodePtr->ns->prefix; + if( pPrefix != nullptr ) + aPrefix = OUString(reinterpret_cast<char const *>(pPrefix), strlen(reinterpret_cast<char const *>(pPrefix)), RTL_TEXTENCODING_UTF8); + } + return aPrefix; + + } + + /** + The node immediately preceding this node. + */ + Reference< XNode > SAL_CALL CNode::getPreviousSibling() + { + ::osl::MutexGuard const g(m_rMutex); + + if (nullptr == m_aNodePtr) { + return nullptr; + } + return GetOwnerDocument().GetCNode(m_aNodePtr->prev); + } + + /** + Returns whether this node (if it is an element) has any attributes. + */ + sal_Bool SAL_CALL CNode::hasAttributes() + { + ::osl::MutexGuard const g(m_rMutex); + + return (m_aNodePtr != nullptr && m_aNodePtr->properties != nullptr); + } + + /** + Returns whether this node has any children. + */ + sal_Bool SAL_CALL CNode::hasChildNodes() + { + ::osl::MutexGuard const g(m_rMutex); + + return (m_aNodePtr != nullptr && m_aNodePtr->children != nullptr); + } + + /** + Inserts the node newChild before the existing child node refChild. + */ + Reference< XNode > SAL_CALL CNode::insertBefore( + const Reference< XNode >& newChild, const Reference< XNode >& refChild) + { + if (!newChild.is() || !refChild.is()) { throw RuntimeException(); } + + if (newChild->getOwnerDocument() != getOwnerDocument()) { + DOMException e; + e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR; + throw e; + } + if (refChild->getParentNode() != Reference< XNode >(this)) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + ::osl::ClearableMutexGuard guard(m_rMutex); + + CNode *const pNewNode(comphelper::getFromUnoTunnel<CNode>(newChild)); + CNode *const pRefNode(comphelper::getFromUnoTunnel<CNode>(refChild)); + if (!pNewNode || !pRefNode) { throw RuntimeException(); } + xmlNodePtr const pNewChild(pNewNode->GetNodePtr()); + xmlNodePtr const pRefChild(pRefNode->GetNodePtr()); + if (!pNewChild || !pRefChild) { throw RuntimeException(); } + + if (pNewChild == m_aNodePtr) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + // already has parent + if (pNewChild->parent != nullptr) + { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + if (!IsChildTypeAllowed(pNewNode->m_aNodeType, nullptr)) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + // attributes are unordered anyway, so just do appendChild + if (XML_ATTRIBUTE_NODE == pNewChild->type) { + guard.clear(); + return appendChild(newChild); + } + + xmlNodePtr cur = m_aNodePtr->children; + + //search child before which to insert + while (cur != nullptr) + { + if (cur == pRefChild) { + // insert before + pNewChild->next = cur; + pNewChild->prev = cur->prev; + cur->prev = pNewChild; + if (pNewChild->prev != nullptr) { + pNewChild->prev->next = pNewChild; + } + pNewChild->parent = cur->parent; + if (pNewChild->parent->children == cur) { + pNewChild->parent->children = pNewChild; + } + // do not update parent->last here! + pNewNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc + break; + } + cur = cur->next; + } + return refChild; + } + + /** + Tests whether the DOM implementation implements a specific feature and + that feature is supported by this node. + */ + sal_Bool SAL_CALL CNode::isSupported(const OUString& /*feature*/, const OUString& /*ver*/) + { + OSL_ENSURE(false, "CNode::isSupported: not implemented (#i113683#)"); + return false; + } + + /** + Puts all Text nodes in the full depth of the sub-tree underneath this + Node, including attribute nodes, into a "normal" form where only structure + (e.g., elements, comments, processing instructions, CDATA sections, and + entity references) separates Text nodes, i.e., there are neither adjacent + Text nodes nor empty Text nodes. + */ + void SAL_CALL CNode::normalize() + { + //XXX combine adjacent text nodes and remove empty ones + OSL_ENSURE(false, "CNode::normalize: not implemented (#i113683#)"); + } + + /** + Removes the child node indicated by oldChild from the list of children, + and returns it. + */ + Reference< XNode > SAL_CALL + CNode::removeChild(const Reference< XNode >& xOldChild) + { + if (!xOldChild.is()) { + throw RuntimeException(); + } + + if (xOldChild->getOwnerDocument() != getOwnerDocument()) { + DOMException e; + e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR; + throw e; + } + if (xOldChild->getParentNode() != Reference< XNode >(this)) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + ::osl::ClearableMutexGuard guard(m_rMutex); + + if (!m_aNodePtr) { throw RuntimeException(); } + + Reference<XNode> xReturn( xOldChild ); + + ::rtl::Reference<CNode> const pOld(comphelper::getFromUnoTunnel<CNode>(xOldChild)); + if (!pOld.is()) { throw RuntimeException(); } + xmlNodePtr const old = pOld->GetNodePtr(); + if (!old) { throw RuntimeException(); } + + if( old->type == XML_ATTRIBUTE_NODE ) + { + xmlAttrPtr pAttr = reinterpret_cast<xmlAttrPtr>(old); + xmlRemoveProp( pAttr ); + pOld->invalidate(); // freed by xmlRemoveProp + xReturn.clear(); + } + else + { + xmlUnlinkNode(old); + pOld->m_bUnlinked = true; + } + + /*DOMNodeRemoved + * Fired when a node is being removed from its parent node. + * This event is dispatched before the node is removed from the tree. + * The target of this event is the node being removed. + * Bubbles: Yes + * Cancelable: No + * Context Info: relatedNode holds the parent node + */ + Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY); + Reference< XMutationEvent > event(docevent->createEvent( + "DOMNodeRemoved"), UNO_QUERY); + event->initMutationEvent("DOMNodeRemoved", + true, + false, + this, + OUString(), OUString(), OUString(), AttrChangeType(0) ); + + // the following dispatch functions use only UNO interfaces + // and call event listeners, so release mutex to prevent deadlocks. + guard.clear(); + + dispatchEvent(event); + // subtree modified for this node + dispatchSubtreeModified(); + + return xReturn; + } + + /** + Replaces the child node oldChild with newChild in the list of children, + and returns the oldChild node. + */ + Reference< XNode > SAL_CALL CNode::replaceChild( + Reference< XNode > const& xNewChild, + Reference< XNode > const& xOldChild) + { + if (!xOldChild.is() || !xNewChild.is()) { + throw RuntimeException(); + } + + if (xNewChild->getOwnerDocument() != getOwnerDocument()) { + DOMException e; + e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR; + throw e; + } + if (xOldChild->getParentNode() != Reference< XNode >(this)) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + ::osl::ClearableMutexGuard guard(m_rMutex); + + ::rtl::Reference<CNode> const pOldNode( + comphelper::getFromUnoTunnel<CNode>(xOldChild)); + ::rtl::Reference<CNode> const pNewNode( + comphelper::getFromUnoTunnel<CNode>(xNewChild)); + if (!pOldNode.is() || !pNewNode.is()) { throw RuntimeException(); } + xmlNodePtr const pOld = pOldNode->GetNodePtr(); + xmlNodePtr const pNew = pNewNode->GetNodePtr(); + if (!pOld || !pNew) { throw RuntimeException(); } + + if (pNew == m_aNodePtr) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + // already has parent + if (pNew->parent != nullptr) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + if (!IsChildTypeAllowed(pNewNode->m_aNodeType, &pOldNode->m_aNodeType)) { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + if( pOld->type == XML_ATTRIBUTE_NODE ) + { + // can only replace attribute with attribute + if ( pOld->type != pNew->type ) + { + DOMException e; + e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR; + throw e; + } + + xmlAttrPtr pAttr = reinterpret_cast<xmlAttrPtr>(pOld); + xmlRemoveProp( pAttr ); + pOldNode->invalidate(); // freed by xmlRemoveProp + appendChild(xNewChild); + } + else + { + + xmlNodePtr cur = m_aNodePtr->children; + //find old node in child list + while (cur != nullptr) + { + if(cur == pOld) + { + // exchange nodes + pNew->prev = pOld->prev; + if (pNew->prev != nullptr) + pNew->prev->next = pNew; + pNew->next = pOld->next; + if (pNew->next != nullptr) + pNew->next->prev = pNew; + pNew->parent = pOld->parent; + assert(pNew->parent && "coverity[var_deref_op] pNew->parent cannot be NULL here"); + if(pNew->parent->children == pOld) + pNew->parent->children = pNew; + if(pNew->parent->last == pOld) + pNew->parent->last = pNew; + pOld->next = nullptr; + pOld->prev = nullptr; + pOld->parent = nullptr; + pOldNode->m_bUnlinked = true; + pNewNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc + } + cur = cur->next; + } + } + + guard.clear(); // release for calling event handlers + dispatchSubtreeModified(); + + return xOldChild; + } + + void CNode::dispatchSubtreeModified() + { + // only uses UNO interfaces => needs no mutex + + // dispatch DOMSubtreeModified + // target is _this_ node + Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY); + Reference< XMutationEvent > event(docevent->createEvent( + "DOMSubtreeModified"), UNO_QUERY); + event->initMutationEvent( + "DOMSubtreeModified", true, + false, Reference< XNode >(), + OUString(), OUString(), OUString(), AttrChangeType(0) ); + dispatchEvent(event); + } + + /** + The value of this node, depending on its type; see the table above. + */ + void SAL_CALL CNode::setNodeValue(const OUString& /*nodeValue*/) + { + // use specific node implementation + // if we end up down here, something went wrong + DOMException e; + e.Code = DOMExceptionType_NO_MODIFICATION_ALLOWED_ERR; + throw e; + } + + /** + The namespace prefix of this node, or null if it is unspecified. + */ + void SAL_CALL CNode::setPrefix(const OUString& prefix) + { + ::osl::MutexGuard const g(m_rMutex); + + if ((nullptr == m_aNodePtr) || + ((m_aNodePtr->type != XML_ELEMENT_NODE) && + (m_aNodePtr->type != XML_ATTRIBUTE_NODE))) + { + DOMException e; + e.Code = DOMExceptionType_NO_MODIFICATION_ALLOWED_ERR; + throw e; + } + OString o1 = OUStringToOString(prefix, RTL_TEXTENCODING_UTF8); + xmlChar const *pBuf = reinterpret_cast<xmlChar const *>(o1.getStr()); + if (m_aNodePtr != nullptr && m_aNodePtr->ns != nullptr) + { + xmlFree(const_cast<xmlChar *>(m_aNodePtr->ns->prefix)); + m_aNodePtr->ns->prefix = xmlStrdup(pBuf); + } + + } + + // --- XEventTarget + void SAL_CALL CNode::addEventListener(const OUString& eventType, + const Reference< css::xml::dom::events::XEventListener >& listener, + sal_Bool useCapture) + { + ::osl::MutexGuard const g(m_rMutex); + + CDocument & rDocument(GetOwnerDocument()); + events::CEventDispatcher & rDispatcher(rDocument.GetEventDispatcher()); + rDispatcher.addListener(m_aNodePtr, eventType, listener, useCapture); + } + + void SAL_CALL CNode::removeEventListener(const OUString& eventType, + const Reference< css::xml::dom::events::XEventListener >& listener, + sal_Bool useCapture) + { + ::osl::MutexGuard const g(m_rMutex); + + CDocument & rDocument(GetOwnerDocument()); + events::CEventDispatcher & rDispatcher(rDocument.GetEventDispatcher()); + rDispatcher.removeListener(m_aNodePtr, eventType, listener, useCapture); + } + + sal_Bool SAL_CALL CNode::dispatchEvent(const Reference< XEvent >& evt) + { + CDocument * pDocument; + events::CEventDispatcher * pDispatcher; + xmlNodePtr pNode; + { + ::osl::MutexGuard const g(m_rMutex); + + pDocument = & GetOwnerDocument(); + pDispatcher = & pDocument->GetEventDispatcher(); + pNode = m_aNodePtr; + } + // this calls event listeners, do not call with locked mutex + pDispatcher->dispatchEvent(*pDocument, m_rMutex, pNode, this, evt); + return true; + } + + ::sal_Int64 SAL_CALL + CNode::getSomething(Sequence< ::sal_Int8 > const& rId) + { + return comphelper::getSomethingImpl(rId, this); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |