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<title>QDomAttr Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QDomAttr Class Reference<br><small>[<a href="xml.html">XML module</a>]</small></h1>
<p>The QDomAttr class represents one attribute of a QDomElement.
<a href="#details">More...</a>
<p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when Qt is built with thread support.</p>
<p><tt>#include <<a href="qdom-h.html">qdom.h</a>></tt>
<p>Inherits <a href="qdomnode.html">QDomNode</a>.
<p><a href="qdomattr-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QDomAttr"><b>QDomAttr</b></a> ()</li>
<li class=fn><a href="#QDomAttr-2"><b>QDomAttr</b></a> ( const QDomAttr & x )</li>
<li class=fn>QDomAttr & <a href="#operator-eq"><b>operator=</b></a> ( const QDomAttr & x )</li>
<li class=fn><a href="#~QDomAttr"><b>~QDomAttr</b></a> ()</li>
<li class=fn>virtual QString <a href="#name"><b>name</b></a> () const</li>
<li class=fn>virtual bool <a href="#specified"><b>specified</b></a> () const</li>
<li class=fn>virtual QDomElement <a href="#ownerElement"><b>ownerElement</b></a> () const</li>
<li class=fn>virtual QString <a href="#value"><b>value</b></a> () const</li>
<li class=fn>virtual void <a href="#setValue"><b>setValue</b></a> ( const QString & v )</li>
<li class=fn>virtual QDomNode::NodeType <a href="#nodeType"><b>nodeType</b></a> () const</li>
<li class=fn>virtual bool <a href="#isAttr"><b>isAttr</b></a> () const</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QDomAttr class represents one attribute of a <a href="qdomelement.html">QDomElement</a>.
<p>
<p> For example, the following piece of XML produces an element with
no children, but two attributes:
<p> <pre>
<link href="http://www.trolltech.com" color="red" />
</pre>
<p> You can access the attributes of an element with code like this:
<p> <pre>
<a href="qdomelement.html">QDomElement</a> e = //...
//...
QDomAttr a = e.<a href="qdomelement.html#attributeNode">attributeNode</a>( "href" );
cout << a.<a href="#value">value</a>() << endl; // prints "http://www.trolltech.com"
a.<a href="#setValue">setValue</a>( "http://doc.trolltech.com" ); // change the node's attribute
QDomAttr a2 = e.<a href="qdomelement.html#attributeNode">attributeNode</a>( "href" );
cout << a2.<a href="#value">value</a>() << endl; // prints "http://doc.trolltech.com"
</pre>
<p> 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 <a href="qdomnode.html#cloneNode">cloneNode</a>() to get an independent copy of the attribute.
<p> QDomAttr can return the <a href="#name">name</a>() and <a href="#value">value</a>() of an attribute. An
attribute's value is set with <a href="#setValue">setValue</a>(). If <a href="#specified">specified</a>() 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 <a href="#ownerElement">ownerElement</a>().
<p> For further information about the Document Object Model see
<a href="http://www.w3.org/TR/REC-DOM-Level-1/">http://www.w3.org/TR/REC-DOM-Level-1/</a> and
<a href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a>.
For a more general introduction of the DOM implementation see the
<a href="qdomdocument.html">QDomDocument</a> documentation.
<p>See also <a href="xml-tools.html">XML</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QDomAttr"></a>QDomAttr::QDomAttr ()
</h3>
Constructs an empty attribute.
<h3 class=fn><a name="QDomAttr-2"></a>QDomAttr::QDomAttr ( const <a href="qdomattr.html">QDomAttr</a> & x )
</h3>
Constructs a copy of <em>x</em>.
<p> The data of the copy is shared (shallow copy): modifying one node
will also change the other. If you want to make a <a href="shclass.html#deep-copy">deep copy</a>, use
<a href="qdomnode.html#cloneNode">cloneNode</a>().
<h3 class=fn><a name="~QDomAttr"></a>QDomAttr::~QDomAttr ()
</h3>
Destroys the object and frees its resources.
<h3 class=fn>bool <a name="isAttr"></a>QDomAttr::isAttr () const<tt> [virtual]</tt>
</h3>
Returns TRUE.
<p>Reimplemented from <a href="qdomnode.html#isAttr">QDomNode</a>.
<h3 class=fn><a href="qstring.html">QString</a> <a name="name"></a>QDomAttr::name () const<tt> [virtual]</tt>
</h3>
Returns the attribute's name.
<h3 class=fn><a href="qdomnode.html#NodeType-enum">QDomNode::NodeType</a> <a name="nodeType"></a>QDomAttr::nodeType () const<tt> [virtual]</tt>
</h3>
Returns <a href="qdomnode.html#NodeType-enum">AttributeNode</a>.
<p>Reimplemented from <a href="qdomnode.html#nodeType">QDomNode</a>.
<h3 class=fn><a href="qdomattr.html">QDomAttr</a> & <a name="operator-eq"></a>QDomAttr::operator= ( const <a href="qdomattr.html">QDomAttr</a> & x )
</h3>
Assigns <em>x</em> to this DOM attribute.
<p> The data of the copy is shared (shallow copy): modifying one node
will also change the other. If you want to make a <a href="shclass.html#deep-copy">deep copy</a>, use
<a href="qdomnode.html#cloneNode">cloneNode</a>().
<h3 class=fn><a href="qdomelement.html">QDomElement</a> <a name="ownerElement"></a>QDomAttr::ownerElement () const<tt> [virtual]</tt>
</h3>
Returns the element node this attribute is attached to or a <a href="qdomnode.html#isNull">null node</a> if this attribute is not
attached to any element.
<h3 class=fn>void <a name="setValue"></a>QDomAttr::setValue ( const <a href="qstring.html">QString</a> & v )<tt> [virtual]</tt>
</h3>
Sets the attribute's value to <em>v</em>.
<p> <p>See also <a href="#value">value</a>().
<h3 class=fn>bool <a name="specified"></a>QDomAttr::specified () const<tt> [virtual]</tt>
</h3>
Returns TRUE if the attribute has either been expicitly specified
in the XML document or was set by the user with <a href="#setValue">setValue</a>().
Returns FALSE if the value hasn't been specified or set.
<p> <p>See also <a href="#setValue">setValue</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="value"></a>QDomAttr::value () const<tt> [virtual]</tt>
</h3>
Returns the value of the attribute or <a href="qstring.html#QString-null">QString::null</a> if the
attribute has not been specified.
<p> <p>See also <a href="#specified">specified</a>() and <a href="#setValue">setValue</a>().
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