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Copy pathElement.cpp
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446 lines (357 loc) · 9.7 KB
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//
// Element.cpp
//
// $Id: //poco/1.4/XML/src/Element.cpp#2 $
//
// Library: XML
// Package: DOM
// Module: DOM
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/DOM/Element.h"
#include "Poco/DOM/Document.h"
#include "Poco/DOM/Attr.h"
#include "Poco/DOM/DOMException.h"
#include "Poco/DOM/ElementsByTagNameList.h"
#include "Poco/DOM/Text.h"
#include "Poco/DOM/AttrMap.h"
namespace Poco {
namespace XML {
Element::Element(Document* pOwnerDocument, const XMLString& rNamespaceURI, const XMLString& rLocalName, const XMLString& qname):
AbstractContainerNode(pOwnerDocument),
_name(pOwnerDocument->namePool().insert(qname, rNamespaceURI, rLocalName)),
_pFirstAttr(0)
{
}
Element::Element(Document* pOwnerDocument, const Element& element):
AbstractContainerNode(pOwnerDocument, element),
_name(pOwnerDocument->namePool().insert(element._name)),
_pFirstAttr(0)
{
Attr* pAttr = element._pFirstAttr;
while (pAttr)
{
Attr* pClonedAttr = static_cast<Attr*>(pAttr->copyNode(false, pOwnerDocument));
setAttributeNode(pClonedAttr);
pClonedAttr->release();
pAttr = static_cast<Attr*>(pAttr->_pNext);
}
}
Element::~Element()
{
if (_pFirstAttr) _pFirstAttr->release();
}
const XMLString& Element::getAttribute(const XMLString& name) const
{
Attr* pAttr = getAttributeNode(name);
if (pAttr)
return pAttr->getValue();
else
return EMPTY_STRING;
}
void Element::setAttribute(const XMLString& name, const XMLString& value)
{
Attr* pAttr = getAttributeNode(name);
if (pAttr)
{
pAttr->setValue(value);
}
else
{
pAttr = ownerDocument()->createAttribute(name);
pAttr->setValue(value);
setAttributeNode(pAttr);
pAttr->release();
}
}
void Element::removeAttribute(const XMLString& name)
{
Attr* pAttr = getAttributeNode(name);
if (pAttr) removeAttributeNode(pAttr);
}
Attr* Element::getAttributeNode(const XMLString& name) const
{
Attr* pAttr = _pFirstAttr;
while (pAttr && pAttr->_name.qname() != name) pAttr = static_cast<Attr*>(pAttr->_pNext);
return pAttr;
}
Attr* Element::setAttributeNode(Attr* newAttr)
{
poco_check_ptr (newAttr);
if (newAttr->ownerDocument() != ownerDocument())
throw DOMException(DOMException::WRONG_DOCUMENT_ERR);
if (newAttr->ownerElement())
throw DOMException(DOMException::INUSE_ATTRIBUTE_ERR);
Attr* oldAttr = getAttributeNode(newAttr->name());
if (oldAttr) removeAttributeNode(oldAttr);
Attr* pCur = _pFirstAttr;
if (pCur)
{
while (pCur->_pNext) pCur = static_cast<Attr*>(pCur->_pNext);
pCur->_pNext = newAttr;
}
else _pFirstAttr = newAttr;
newAttr->duplicate();
newAttr->_pParent = this;
if (_pOwner->events())
dispatchAttrModified(newAttr, MutationEvent::ADDITION, EMPTY_STRING, newAttr->getValue());
return oldAttr;
}
Attr* Element::removeAttributeNode(Attr* oldAttr)
{
poco_check_ptr (oldAttr);
if (_pOwner->events())
dispatchAttrModified(oldAttr, MutationEvent::REMOVAL, oldAttr->getValue(), EMPTY_STRING);
if (oldAttr != _pFirstAttr)
{
Attr* pCur = _pFirstAttr;
while (pCur->_pNext != oldAttr) pCur = static_cast<Attr*>(pCur->_pNext);
if (pCur)
{
pCur->_pNext = static_cast<Attr*>(pCur->_pNext->_pNext);
}
else throw DOMException(DOMException::NOT_FOUND_ERR);
}
else _pFirstAttr = static_cast<Attr*>(_pFirstAttr->_pNext);
oldAttr->_pNext = 0;
oldAttr->_pParent = 0;
oldAttr->autoRelease();
return oldAttr;
}
Attr* Element::addAttributeNodeNP(Attr* oldAttr, Attr* newAttr)
{
newAttr->_pParent = this;
if (oldAttr)
{
oldAttr->_pNext = newAttr;
}
else if (_pFirstAttr)
{
newAttr->_pNext = _pFirstAttr;
_pFirstAttr = newAttr;
}
else
{
_pFirstAttr = newAttr;
}
newAttr->duplicate();
return newAttr;
}
NodeList* Element::getElementsByTagName(const XMLString& name) const
{
return new ElementsByTagNameList(this, name);
}
NodeList* Element::getElementsByTagNameNS(const XMLString& rNamespaceURI, const XMLString& rLocalName) const
{
return new ElementsByTagNameListNS(this, rNamespaceURI, rLocalName);
}
void Element::normalize()
{
Node* pCur = firstChild();
while (pCur)
{
if (pCur->nodeType() == Node::ELEMENT_NODE)
{
pCur->normalize();
}
else if (pCur->nodeType() == Node::TEXT_NODE)
{
Node* pNext = pCur->nextSibling();
while (pNext && pNext->nodeType() == Node::TEXT_NODE)
{
static_cast<Text*>(pCur)->appendData(pNext->nodeValue());
removeChild(pNext);
pNext = pCur->nextSibling();
}
}
pCur = pCur->nextSibling();
}
}
const XMLString& Element::nodeName() const
{
return tagName();
}
NamedNodeMap* Element::attributes() const
{
return new AttrMap(const_cast<Element*>(this));
}
unsigned short Element::nodeType() const
{
return Node::ELEMENT_NODE;
}
const XMLString& Element::getAttributeNS(const XMLString& rNamespaceURI, const XMLString& rLocalName) const
{
Attr* pAttr = getAttributeNodeNS(rNamespaceURI, rLocalName);
if (pAttr)
return pAttr->getValue();
else
return EMPTY_STRING;
}
void Element::setAttributeNS(const XMLString& rNamespaceURI, const XMLString& qualifiedName, const XMLString& value)
{
Attr* pAttr = getAttributeNodeNS(rNamespaceURI, qualifiedName);
if (pAttr)
{
pAttr->setValue(value);
}
else
{
pAttr = _pOwner->createAttributeNS(rNamespaceURI, qualifiedName);
pAttr->setValue(value);
setAttributeNodeNS(pAttr);
pAttr->release();
}
}
void Element::removeAttributeNS(const XMLString& rNamespaceURI, const XMLString& rLocalName)
{
Attr* pAttr = getAttributeNodeNS(rNamespaceURI, rLocalName);
if (pAttr) removeAttributeNode(pAttr);
}
Attr* Element::getAttributeNodeNS(const XMLString& rNamespaceURI, const XMLString& rLocalName) const
{
Attr* pAttr = _pFirstAttr;
while (pAttr && (pAttr->_name.namespaceURI() != rNamespaceURI || pAttr->_name.localName() != rLocalName)) pAttr = static_cast<Attr*>(pAttr->_pNext);
return pAttr;
}
Attr* Element::setAttributeNodeNS(Attr* newAttr)
{
poco_check_ptr (newAttr);
if (newAttr->ownerDocument() != ownerDocument())
throw DOMException(DOMException::WRONG_DOCUMENT_ERR);
if (newAttr->ownerElement())
throw DOMException(DOMException::INUSE_ATTRIBUTE_ERR);
Attr* oldAttr = getAttributeNodeNS(newAttr->namespaceURI(), newAttr->localName());
if (oldAttr) removeAttributeNode(oldAttr);
Attr* pCur = _pFirstAttr;
if (pCur)
{
while (pCur->_pNext) pCur = static_cast<Attr*>(pCur->_pNext);
pCur->_pNext = newAttr;
}
else _pFirstAttr = newAttr;
newAttr->_pParent = this;
newAttr->duplicate();
if (_pOwner->events())
dispatchAttrModified(newAttr, MutationEvent::ADDITION, EMPTY_STRING, newAttr->getValue());
return oldAttr;
}
bool Element::hasAttribute(const XMLString& name) const
{
return getAttributeNode(name) != 0;
}
bool Element::hasAttributeNS(const XMLString& rNamespaceURI, const XMLString& rLocalName) const
{
return getAttributeNodeNS(rNamespaceURI, rLocalName) != 0;
}
const XMLString& Element::namespaceURI() const
{
return _name.namespaceURI();
}
XMLString Element::prefix() const
{
return _name.prefix();
}
const XMLString& Element::localName() const
{
return _name.localName();
}
bool Element::hasAttributes() const
{
return _pFirstAttr != 0;
}
XMLString Element::innerText() const
{
XMLString result;
Node* pChild = firstChild();
while (pChild)
{
result.append(pChild->innerText());
pChild = pChild->nextSibling();
}
return result;
}
Element* Element::getChildElement(const XMLString& name) const
{
Node* pNode = firstChild();
while (pNode && !(pNode->nodeType() == Node::ELEMENT_NODE && pNode->nodeName() == name))
pNode = pNode->nextSibling();
return static_cast<Element*>(pNode);
}
Element* Element::getChildElementNS(const XMLString& rNamespaceURI, const XMLString& rLocalName) const
{
Node* pNode = firstChild();
while (pNode && !(pNode->nodeType() == Node::ELEMENT_NODE && pNode->namespaceURI() == rNamespaceURI && pNode->localName() == rLocalName))
pNode = pNode->nextSibling();
return static_cast<Element*>(pNode);
}
void Element::dispatchNodeRemovedFromDocument()
{
AbstractContainerNode::dispatchNodeRemovedFromDocument();
Attr* pAttr = _pFirstAttr;
while (pAttr)
{
pAttr->dispatchNodeRemovedFromDocument();
pAttr = static_cast<Attr*>(pAttr->_pNext);
}
}
void Element::dispatchNodeInsertedIntoDocument()
{
AbstractContainerNode::dispatchNodeInsertedIntoDocument();
Attr* pAttr = _pFirstAttr;
while (pAttr)
{
pAttr->dispatchNodeInsertedIntoDocument();
pAttr = static_cast<Attr*>(pAttr->_pNext);
}
}
Node* Element::copyNode(bool deep, Document* pOwnerDocument) const
{
Element* pClone = new Element(pOwnerDocument, *this);
if (deep)
{
Node* pNode = firstChild();
while (pNode)
{
pClone->appendChild(static_cast<AbstractNode*>(pNode)->copyNode(true, pOwnerDocument))->release();
pNode = pNode->nextSibling();
}
}
return pClone;
}
Element* Element::getElementById(const XMLString& elementId, const XMLString& idAttribute) const
{
if (getAttribute(idAttribute) == elementId)
return const_cast<Element*>(this);
Node* pNode = firstChild();
while (pNode)
{
if (pNode->nodeType() == Node::ELEMENT_NODE)
{
Element* pResult = static_cast<Element*>(pNode)->getElementById(elementId, idAttribute);
if (pResult) return pResult;
}
pNode = pNode->nextSibling();
}
return 0;
}
Element* Element::getElementByIdNS(const XMLString& elementId, const XMLString& idAttributeURI, const XMLString& idAttributeLocalName) const
{
if (getAttributeNS(idAttributeURI, idAttributeLocalName) == elementId)
return const_cast<Element*>(this);
Node* pNode = firstChild();
while (pNode)
{
if (pNode->nodeType() == Node::ELEMENT_NODE)
{
Element* pResult = static_cast<Element*>(pNode)->getElementByIdNS(elementId, idAttributeURI, idAttributeLocalName);
if (pResult) return pResult;
}
pNode = pNode->nextSibling();
}
return 0;
}
} } // namespace Poco::XML
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