Referencia de la Clase QDomAttr

The QDomAttr class represents one attribute of a QDomElement.XMLFor example, the following piece of XML produces an element with no children, but two attributes: Más...

#include <qdom.h>

Diagrama de herencias de QDomAttr

Lista de todos los miembros.

Métodos públicos
	QDomAttr ()
	QDomAttr (const QDomAttr &x)
QDomAttr &	operator= (const QDomAttr &)
	~QDomAttr ()
virtual QString	name () const
virtual bool	specified () const
virtual QDomElement	ownerElement () const
virtual QString	value () const
virtual void	setValue (const QString &)
QDomNode::NodeType	nodeType () const
bool	isAttr () const
	QDomAttr ()
	QDomAttr (const QDomAttr &x)
QDomAttr &	operator= (const QDomAttr &)
	~QDomAttr ()
virtual QString	name () const
virtual bool	specified () const
virtual QDomElement	ownerElement () const
virtual QString	value () const
virtual void	setValue (const QString &)
QDomNode::NodeType	nodeType () const
bool	isAttr () const
Amigas
class	QDomDocument
class	QDomElement
class	QDomNode

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Descripción detallada

The QDomAttr class represents one attribute of a QDomElement.

XML

For example, the following piece of XML produces an element with no children, but two attributes:

    <link href="http://www.trolltech.com" color="red" />

You can access the attributes of an element with code like this:

    QDomElement e = //...
    //...
    QDomAttr a = e.attributeNode( "href" );
    cout << a.value() << endl;                // prints "http://www.trolltech.com"
    a.setValue( "http://doc.trolltech.com" ); // change the node's attribute
    QDomAttr a2 = e.attributeNode( "href" );
    cout << a2.value() << endl;               // prints "http://doc.trolltech.com"

This example also shows that changing an attribute received from an element changes the attribute of the element. If you do not want to change the value of the element's attribute you must use cloneNode() to get an independent copy of the attribute.

QDomAttr can return the name() and value() of an attribute. An attribute's value is set with setValue(). If specified() returns TRUE the value was either set in the document or set with setValue(); otherwise the value hasn't been set. The node this attribute is attached to (if any) is returned by ownerElement().

For further information about the Document Object Model see http://www.w3.org/TR/REC-DOM-Level-1/ and http://www.w3.org/TR/DOM-Level-2-Core/. For a more general introduction of the DOM implementation see the QDomDocument documentation.

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Documentación del constructor y destructor

QDomAttr::QDomAttr

(

)

Constructs an empty attribute.

QDomAttr::QDomAttr

(

const QDomAttr &

x

)

Constructs a copy of x.

The data of the copy is shared (shallow copy): modifying one node will also change the other. If you want to make a deep copy, use cloneNode().

QDomAttr::~QDomAttr

(

)

Destroys the object and frees its resources.

QDomAttr::QDomAttr

(

)

QDomAttr::QDomAttr

(

const QDomAttr &

x

)

QDomAttr::~QDomAttr

(

)

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Documentación de las funciones miembro

bool QDomAttr::isAttr

(

)

const [virtual]

Returns TRUE.

Reimplementado de QDomNode.

bool QDomAttr::isAttr

(

)

const [virtual]

Returns TRUE if the node is an attribute; otherwise returns FALSE.

If this function returns TRUE, it does not imply that this object is a QDomAttribute; you can get the QDomAttribute with toAttribute().

Ver también:

toAttr()

Reimplementado de QDomNode.

QString QDomAttr::name

(

)

const [virtual]

Returns the attribute's name.

virtual QString QDomAttr::name

(

)

const [virtual]

QDomNode::NodeType QDomAttr::nodeType

(

)

const [virtual]

Returns AttributeNode.

Reimplementado de QDomNode.

QDomNode::NodeType QDomAttr::nodeType

(

)

const [virtual]

Returns the type of the node.

Ver también:

toAttr(), toCDATASection(), toDocumentFragment(), toDocument() toDocumentType(), toElement(), toEntityReference(), toText(), toEntity() toNotation(), toProcessingInstruction(), toCharacterData(), toComment()

Reimplementado de QDomNode.

QDomAttr & QDomAttr::operator=

(

const QDomAttr &

x

)

Assigns x to this DOM attribute.

The data of the copy is shared (shallow copy): modifying one node will also change the other. If you want to make a deep copy, use cloneNode().

QDomAttr& QDomAttr::operator=

(

const QDomAttr &

)

QDomElement QDomAttr::ownerElement

(

)

const [virtual]

Returns the element node this attribute is attached to or a null node if this attribute is not attached to any element.

virtual QDomElement QDomAttr::ownerElement

(

)

const [virtual]

virtual void QDomAttr::setValue

(

const QString &

)

[virtual]

void QDomAttr::setValue

(

const QString &

v

)

[virtual]

Sets the attribute's value to v.

Ver también:

value()

virtual bool QDomAttr::specified

(

)

const [virtual]

bool QDomAttr::specified

(

)

const [virtual]

Returns TRUE if the attribute has either been expicitly specified in the XML document or was set by the user with setValue(). Returns FALSE if the value hasn't been specified or set.

Ver también:

setValue()

QString QDomAttr::value

(

)

const [virtual]

Returns the value of the attribute or QString::null if the attribute has not been specified.

Ver también:

specified() setValue()

virtual QString QDomAttr::value

(

)

const [virtual]

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Documentación de las funciones relacionadas y clases amigas

QDomDocument [friend]

Reimplementado de QDomNode.

QDomElement [friend]

QDomNode [friend]

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La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qt/include/qdom.h
• src/qt/src/xml/qdom.h
• src/qt/src/xml/qdom.cpp