/* -*- 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 .
*/
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 );
}
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
}
}
/** 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(dynamic_cast<CNode*>(xNewChild.get())); 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;
}
checkNoParent(cur);
// 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);
pNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc
if (rDocument.GetEventDispatcher().hasListeners())
{ // dispatch DOMNodeInserted event, target is the new node // this node is the related node // does bubble
Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
Reference< XMutationEvent > event(docevent->createEvent(
u"DOMNodeInserted"_ustr), UNO_QUERY);
event->initMutationEvent(u"DOMNodeInserted"_ustr, 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);
/** 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);
/** 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);
/** Returns whether this node (if it is an element) has any attributes.
*/
sal_Bool SAL_CALL CNode::hasAttributes()
{
::osl::MutexGuard const g(m_rMutex);
// 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#)"); returnfalse;
}
/** 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();
}
CDocument& rDocument(GetOwnerDocument()); if (rDocument.GetEventDispatcher().hasListeners())
{ /*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(
u"DOMNodeRemoved"_ustr), UNO_QUERY);
event->initMutationEvent(u"DOMNodeRemoved"_ustr, 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();
}
/** 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);
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