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tdelibs/khtml/xml/dom_elementimpl.h

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/*
* This file is part of the DOM implementation for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Peter Kelly (pmk@post.com)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2003 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef _DOM_ELEMENTImpl_h_
#define _DOM_ELEMENTImpl_h_
#include "dom_nodeimpl.h"
#include "dom/dom_exception.h"
#include "dom/dom_element.h"
#include "xml/dom_stringimpl.h"
#include "misc/shared.h"
namespace khtml {
class CSSStyleSelector;
}
namespace DOM {
class ElementImpl;
class DocumentImpl;
class NamedAttrMapImpl;
// Attr can have Text and EntityReference children
// therefore it has to be a fullblown Node. The plan
// is to dynamically allocate a textchild and store the
// resulting nodevalue in the AttributeImpl upon
// destruction. however, this is not yet implemented.
class AttrImpl : public NodeBaseImpl
{
friend class ElementImpl;
friend class NamedAttrMapImpl;
public:
AttrImpl(ElementImpl* element, DocumentImpl* docPtr, NodeImpl::Id attrId,
DOMStringImpl *value, DOMStringImpl *prefix = 0);
~AttrImpl();
private:
AttrImpl(const AttrImpl &other);
AttrImpl &operator = (const AttrImpl &other);
public:
// DOM methods & attributes for Attr
bool specified() const { return m_specified; }
ElementImpl* ownerElement() const { return m_element; }
void setOwnerElement( ElementImpl* impl ) { m_element = impl; }
DOMString name() const;
//DOMString value() const;
void setValue( const DOMString &v, int &exceptioncode );
// DOM methods overridden from parent classes
virtual DOMString nodeName() const;
virtual unsigned short nodeType() const;
virtual DOMString prefix() const;
virtual void setPrefix(const DOMString &_prefix, int &exceptioncode );
virtual DOMString namespaceURI() const;
virtual DOMString localName() const;
virtual DOMString nodeValue() const;
virtual void setNodeValue( const DOMString &, int &exceptioncode );
virtual NodeImpl *cloneNode ( bool deep );
virtual DOMStringImpl* textContent() const;
virtual void setTextContent( const DOMString &text, int& exceptioncode );
// Other methods (not part of DOM)
virtual bool isAttributeNode() const { return true; }
virtual bool childAllowed( NodeImpl *newChild );
virtual bool childTypeAllowed( unsigned short type );
virtual NodeImpl::Id id() const { return m_attrId; }
virtual DOMString toString() const;
void setElement(ElementImpl *element);
DOMStringImpl *val() { return m_value; }
protected:
ElementImpl *m_element;
NodeImpl::Id m_attrId;
DOMStringImpl *m_value;
DOMStringImpl *m_prefix;
DOMStringImpl *m_localName;
};
// Mini version of AttrImpl internal to NamedAttrMapImpl.
// Stores either the id and value of an attribute
// (in the case of m_attrId != 0), or a pointer to an AttrImpl (if m_attrId == 0)
// The latter case only happens when the Attr node is requested by some DOM
// code or is an XML attribute.
// In most cases the id and value is all we need to store, which is more
// memory efficient.
struct AttributeImpl
{
NodeImpl::Id id() const { return m_attrId ? m_attrId : m_data.attr->id(); }
DOMStringImpl *val() const { return m_attrId ? m_data.value : m_data.attr->val(); }
DOMString value() const { return val(); }
AttrImpl *attr() const { return m_attrId ? 0 : m_data.attr; }
DOMString namespaceURI() { return m_attrId ? DOMString() : m_data.attr->namespaceURI(); }
DOMString prefix() { return m_attrId ? DOMString() : m_data.attr->prefix(); }
DOMString localName() { return m_attrId ? DOMString() : m_data.attr->localName(); }
DOMString name() { return m_attrId ? DOMString() : m_data.attr->name(); }
void setValue(DOMStringImpl *value, ElementImpl *element);
AttrImpl *createAttr(ElementImpl *element, DocumentImpl *docPtr);
void free();
NodeImpl::Id m_attrId;
union {
DOMStringImpl *value;
AttrImpl *attr;
} m_data;
};
class ElementImpl : public NodeBaseImpl
{
friend class DocumentImpl;
friend class NamedAttrMapImpl;
friend class AttrImpl;
friend class NodeImpl;
friend class khtml::CSSStyleSelector;
public:
ElementImpl(DocumentImpl *doc);
~ElementImpl();
DOMString getAttribute( NodeImpl::Id id, bool nsAware = 0, const DOMString& qName = DOMString() ) const;
DOMStringImpl* getAttributeImpl( NodeImpl::Id id, bool nsAware = 0, DOMStringImpl* qName = 0 ) const;
void setAttribute( NodeImpl::Id id, const DOMString &value, const DOMString &qName,
int &exceptioncode );
void setAttributeNS( const DOMString &namespaceURI, const DOMString &qualifiedName,
const DOMString& value, int &exceptioncode );
virtual DOMString prefix() const;
void setPrefix(const DOMString &_prefix, int &exceptioncode );
virtual DOMString namespaceURI() const;
// DOM methods overridden from parent classes
virtual DOMString tagName() const = 0;
virtual unsigned short nodeType() const;
virtual NodeImpl *cloneNode ( bool deep );
virtual DOMString nodeName() const;
virtual NodeImpl::Id id() const = 0;
virtual bool isElementNode() const { return true; }
virtual void insertedIntoDocument();
virtual void removedFromDocument();
// convenience methods which ignore exceptions
void setAttribute (NodeImpl::Id id, const DOMString &value);
NamedAttrMapImpl* attributes(bool readonly = false) const
{
if (!readonly && !namedAttrMap) createAttributeMap();
return namedAttrMap;
}
//This is always called, whenever an attribute changed
virtual void parseAttribute(AttributeImpl *) {}
void parseAttribute(NodeImpl::Id attrId, DOMStringImpl *value) {
AttributeImpl aimpl;
aimpl.m_attrId = attrId;
aimpl.m_data.value = value;
parseAttribute(&aimpl);
}
// not part of the DOM
void setAttributeMap ( NamedAttrMapImpl* list );
// State of the element.
virtual QString state() { return QString::null; }
virtual void attach();
virtual void close();
virtual void detach();
virtual void structureChanged();
virtual void backwardsStructureChanged();
virtual void attributeChanged(NodeImpl::Id attrId);
virtual khtml::RenderStyle *styleForRenderer(khtml::RenderObject *parent);
virtual khtml::RenderObject *createRenderer(khtml::RenderArena *, khtml::RenderStyle *);
virtual void recalcStyle( StyleChange = NoChange );
virtual void mouseEventHandler( MouseEvent* /*ev*/, bool /*inside*/ ) {}
virtual bool isFocusable() const;
virtual bool childAllowed( NodeImpl *newChild );
virtual bool childTypeAllowed( unsigned short type );
DOM::CSSStyleDeclarationImpl *styleRules() {
if (!m_styleDecls) createDecl();
return m_styleDecls;
}
void dispatchAttrRemovalEvent(NodeImpl::Id id, DOMStringImpl *value);
void dispatchAttrAdditionEvent(NodeImpl::Id id, DOMStringImpl *value);
virtual DOMString toString() const;
virtual DOMString selectionToString(NodeImpl *selectionStart, NodeImpl *selectionEnd, int startOffset, int endOffset, bool &found) const;
virtual bool contentEditable() const;
void setContentEditable(bool enabled);
void scrollIntoView(bool alignToTop);
/** Returns the opening tag and properties.
* Examples: '<b', '<img alt="hello" src="image.png"
*
* For security reasons, passwords are stripped out of all src= and
* href= tags if expandurls is turned on.
*
* @param expandurls If this is set then in the above example, it would give
* src="http://website.com/image.png". Note that the password
* is stripped out of the url.
*
* DOM::RangeImpl uses this which is why it is public.
*/
DOMString openTagStartToString(bool expandurls = false) const;
void updateId(DOMStringImpl* oldId, DOMStringImpl* newId);
//Called when mapping from id to this node in document should be removed
virtual void removeId(const QString& id);
//Called when mapping from id to this node in document should be added
virtual void addId (const QString& id);
protected:
void createAttributeMap() const;
void createDecl();
void finishCloneNode( ElementImpl *clone, bool deep );
private:
// map of default attributes. derived element classes are responsible
// for setting this according to the corresponding element description
// in the DTD
virtual NamedAttrMapImpl* defaultMap() const;
protected: // member variables
mutable NamedAttrMapImpl *namedAttrMap;
DOM::CSSStyleDeclarationImpl *m_styleDecls;
DOMStringImpl *m_prefix;
};
class XMLElementImpl : public ElementImpl
{
public:
XMLElementImpl(DocumentImpl *doc, NodeImpl::Id id);
XMLElementImpl(DocumentImpl *doc, NodeImpl::Id id, DOMStringImpl *_qualifiedName);
~XMLElementImpl();
// DOM methods overridden from parent classes
virtual DOMString tagName() const;
virtual DOMString localName() const;
virtual NodeImpl *cloneNode ( bool deep );
// Other methods (not part of DOM)
virtual bool isXMLElementNode() const { return true; }
virtual Id id() const { return m_id; }
protected:
Id m_id;
};
// the map of attributes of an element
class NamedAttrMapImpl : public NamedNodeMapImpl
{
friend class ElementImpl;
public:
NamedAttrMapImpl(ElementImpl *element);
virtual ~NamedAttrMapImpl();
// DOM methods & attributes for NamedNodeMap
virtual NodeImpl *getNamedItem ( NodeImpl::Id id, bool nsAware = false, DOMStringImpl* qName = 0 ) const;
virtual Node removeNamedItem ( NodeImpl::Id id, bool nsAware, DOMStringImpl* qName, int &exceptioncode );
virtual Node setNamedItem ( NodeImpl* arg, bool nsAware, DOMStringImpl* qName, int &exceptioncode );
virtual NodeImpl *item ( unsigned long index ) const;
virtual unsigned long length( ) const;
// Other methods (not part of DOM)
virtual bool isReadOnly() { return false; }
AttributeImpl *attrAt(unsigned long index) const { return &m_attrs[index]; }
// ### replace idAt and getValueAt with attrAt
NodeImpl::Id idAt(unsigned long index) const;
DOMStringImpl *valueAt(unsigned long index) const;
DOMStringImpl *getValue(NodeImpl::Id id, bool nsAware = false, DOMStringImpl* qName = 0) const;
void setValue(NodeImpl::Id id, DOMStringImpl *value, DOMStringImpl* qName = 0,
DOMStringImpl *prefix = 0, bool nsAware = false, bool hasNS = false);
Attr removeAttr(AttrImpl *attr);
NodeImpl::Id mapId(DOMStringImpl* namespaceURI, DOMStringImpl* localName, bool readonly);
void copyAttributes(NamedAttrMapImpl *other);
void setElement(ElementImpl *element);
void detachFromElement();
protected:
ElementImpl *m_element;
AttributeImpl *m_attrs;
unsigned long m_attrCount;
};
// ------------ inline DOM helper functions ---------------
inline bool checkQualifiedName(const DOMString &qualifiedName, const DOMString &namespaceURI, int *colonPos,
bool nameCanBeNull, bool nameCanBeEmpty, int *pExceptioncode)
{
// Not mentioned in spec: throw NAMESPACE_ERR if no qualifiedName supplied
if (!nameCanBeNull && qualifiedName.isNull()) {
if (pExceptioncode)
*pExceptioncode = DOMException::NAMESPACE_ERR;
return false;
}
// INVALID_CHARACTER_ERR: Raised if the specified qualified name contains an illegal character.
if (!qualifiedName.isNull() && !Element::khtmlValidQualifiedName(qualifiedName)
&& ( !qualifiedName.isEmpty() || !nameCanBeEmpty ) ) {
if (pExceptioncode)
*pExceptioncode = DOMException::INVALID_CHARACTER_ERR;
return false;
}
// NAMESPACE_ERR:
// - Raised if the qualifiedName is malformed,
// - if the qualifiedName has a prefix and the namespaceURI is null, or
// - if the qualifiedName is null and the namespaceURI is different from null
// - if the qualifiedName has a prefix that is "xml" and the namespaceURI is different
// from "http://www.w3.org/XML/1998/namespace" [Namespaces].
int colonpos = -1;
uint i;
DOMStringImpl *qname = qualifiedName.implementation();
for (i = 0 ; i < qname->l ; i++) {
if ((*qname)[i] == ':') {
colonpos = i;
break;
}
}
if (!qualifiedName.isNull() && Element::khtmlMalformedQualifiedName(qualifiedName) ||
(colonpos >= 0 && namespaceURI.isNull()) ||
(qualifiedName.isNull() && !namespaceURI.isNull()) ||
(colonpos == 3 && qualifiedName[0] == 'x' && qualifiedName[1] == 'm' && qualifiedName[2] == 'l' &&
namespaceURI != "http://www.w3.org/XML/1998/namespace")) {
if (pExceptioncode)
*pExceptioncode = DOMException::NAMESPACE_ERR;
return false;
}
if(colonPos)
*colonPos = colonpos;
return true;
}
inline void splitPrefixLocalName(DOMStringImpl *qualifiedName, DOMString &prefix, DOMString &localName, int colonPos = -2)
{
if (colonPos == -2)
for (uint i = 0 ; i < qualifiedName->l ; ++i)
if (qualifiedName->s[i] == ':') {
colonPos = i;
break;
}
if (colonPos >= 0) {
prefix = qualifiedName->copy();
localName = prefix.split(colonPos+1);
prefix.implementation()->truncate(colonPos);
} else
localName = qualifiedName->copy();
}
} //namespace
#endif
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