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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>QDomElement Class Reference<br><small>[<a href="xml.html">XML module</a>]</small></h1>
<p>The QDomElement class represents one element in the DOM tree.
<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="qdomelement-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QDomElement"><b>QDomElement</b></a> ()</li>
<li class=fn><a href="#QDomElement-2"><b>QDomElement</b></a> ( const QDomElement & x )</li>
<li class=fn>QDomElement & <a href="#operator-eq"><b>operator=</b></a> ( const QDomElement & x )</li>
<li class=fn><a href="#~QDomElement"><b>~QDomElement</b></a> ()</li>
<li class=fn>QString <a href="#attribute"><b>attribute</b></a> ( const QString & name, const QString & defValue = QString::null ) const</li>
<li class=fn>void <a href="#setAttribute"><b>setAttribute</b></a> ( const QString & name, const QString & value )</li>
<li class=fn>void <a href="#setAttribute-2"><b>setAttribute</b></a> ( const QString & name, int value )</li>
<li class=fn>void <a href="#setAttribute-3"><b>setAttribute</b></a> ( const QString & name, uint value )</li>
<li class=fn>void <a href="#setAttribute-4"><b>setAttribute</b></a> ( const QString & name, long value )</li>
<li class=fn>void <a href="#setAttribute-5"><b>setAttribute</b></a> ( const QString & name, ulong value )</li>
<li class=fn>void <a href="#setAttribute-6"><b>setAttribute</b></a> ( const QString & name, double value )</li>
<li class=fn>void <a href="#removeAttribute"><b>removeAttribute</b></a> ( const QString & name )</li>
<li class=fn>QDomAttr <a href="#attributeNode"><b>attributeNode</b></a> ( const QString & name )</li>
<li class=fn>QDomAttr <a href="#setAttributeNode"><b>setAttributeNode</b></a> ( const QDomAttr & newAttr )</li>
<li class=fn>QDomAttr <a href="#removeAttributeNode"><b>removeAttributeNode</b></a> ( const QDomAttr & oldAttr )</li>
<li class=fn>virtual QDomNodeList <a href="#elementsByTagName"><b>elementsByTagName</b></a> ( const QString & tagname ) const</li>
<li class=fn>bool <a href="#hasAttribute"><b>hasAttribute</b></a> ( const QString & name ) const</li>
<li class=fn>QString <a href="#attributeNS"><b>attributeNS</b></a> ( const QString nsURI, const QString & localName, const QString & defValue ) const</li>
<li class=fn>void <a href="#setAttributeNS"><b>setAttributeNS</b></a> ( const QString nsURI, const QString & qName, const QString & value )</li>
<li class=fn>void <a href="#setAttributeNS-2"><b>setAttributeNS</b></a> ( const QString nsURI, const QString & qName, int value )</li>
<li class=fn>void <a href="#setAttributeNS-3"><b>setAttributeNS</b></a> ( const QString nsURI, const QString & qName, uint value )</li>
<li class=fn>void <a href="#setAttributeNS-4"><b>setAttributeNS</b></a> ( const QString nsURI, const QString & qName, long value )</li>
<li class=fn>void <a href="#setAttributeNS-5"><b>setAttributeNS</b></a> ( const QString nsURI, const QString & qName, ulong value )</li>
<li class=fn>void <a href="#setAttributeNS-6"><b>setAttributeNS</b></a> ( const QString nsURI, const QString & qName, double value )</li>
<li class=fn>void <a href="#removeAttributeNS"><b>removeAttributeNS</b></a> ( const QString & nsURI, const QString & localName )</li>
<li class=fn>QDomAttr <a href="#attributeNodeNS"><b>attributeNodeNS</b></a> ( const QString & nsURI, const QString & localName )</li>
<li class=fn>QDomAttr <a href="#setAttributeNodeNS"><b>setAttributeNodeNS</b></a> ( const QDomAttr & newAttr )</li>
<li class=fn>virtual QDomNodeList <a href="#elementsByTagNameNS"><b>elementsByTagNameNS</b></a> ( const QString & nsURI, const QString & localName ) const</li>
<li class=fn>bool <a href="#hasAttributeNS"><b>hasAttributeNS</b></a> ( const QString & nsURI, const QString & localName ) const</li>
<li class=fn>QString <a href="#tagName"><b>tagName</b></a> () const</li>
<li class=fn>void <a href="#setTagName"><b>setTagName</b></a> ( const QString & name )</li>
<li class=fn>virtual QDomNamedNodeMap <a href="#attributes"><b>attributes</b></a> () const</li>
<li class=fn>virtual QDomNode::NodeType <a href="#nodeType"><b>nodeType</b></a> () const</li>
<li class=fn>virtual bool <a href="#isElement"><b>isElement</b></a> () const</li>
<li class=fn>QString <a href="#text"><b>text</b></a> () const</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QDomElement class represents one element in the DOM tree.
<p>
<p> Elements have a <a href="#tagName">tagName</a>() and zero or more attributes associated
with them. The tag name can be changed with <a href="#setTagName">setTagName</a>().
<p> Element attributes are represented by <a href="qdomattr.html">QDomAttr</a> objects that can
be queried using the <a href="#attribute">attribute</a>() and <a href="#attributeNode">attributeNode</a>() functions.
You can set attributes with the <a href="#setAttribute">setAttribute</a>() and
<a href="#setAttributeNode">setAttributeNode</a>() functions. Attributes can be removed with
<a href="#removeAttribute">removeAttribute</a>(). There are namespace-aware equivalents to these
functions, i.e. <a href="#setAttributeNS">setAttributeNS</a>(), <a href="#setAttributeNodeNS">setAttributeNodeNS</a>() and
<a href="#removeAttributeNS">removeAttributeNS</a>().
<p> If you want to access the text of a node use <a href="#text">text</a>(), e.g.
<pre>
QDomElement e = //...
//...
<a href="qstring.html">QString</a> s = e.<a href="#text">text</a>()
</pre>
The text() function operates recursively to find the text (since
not all elements contain text). If you want to find all the text
in all of a node's children, iterate over the children looking for
<a href="qdomtext.html">QDomText</a> nodes, e.g.
<pre>
<a href="qstring.html">QString</a> text;
QDomElement element = doc.documentElement();
for( <a href="qdomnode.html">QDomNode</a> n = element.<a href="qdomnode.html#firstChild">firstChild</a>(); !n.<a href="qdomnode.html#isNull">isNull</a>(); n = n.<a href="qdomnode.html#nextSibling">nextSibling</a>() )
{
<a href="qdomtext.html">QDomText</a> t = n.<a href="qdomnode.html#toText">toText</a>();
if ( !t.<a href="qdomnode.html#isNull">isNull</a>() )
text += t.<a href="qdomcharacterdata.html#data">data</a>();
}
</pre>
Note that we attempt to convert each node to a text node and use
<a href="#text">text</a>() rather than using <a href="qdomnode.html#firstChild">firstChild</a>().<a href="qdomnode.html#toText">toText</a>().data() or
n.toText().data() directly on the node, because the node may not
be a text element.
<p> You can get a list of all the decendents of an element which have
a specified tag name with <a href="#elementsByTagName">elementsByTagName</a>() or
<a href="#elementsByTagNameNS">elementsByTagNameNS</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="QDomElement"></a>QDomElement::QDomElement ()
</h3>
Constructs an empty element. Use the <a href="qdomdocument.html#createElement">QDomDocument::createElement</a>()
function to construct elements with content.
<h3 class=fn><a name="QDomElement-2"></a>QDomElement::QDomElement ( const <a href="qdomelement.html">QDomElement</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="~QDomElement"></a>QDomElement::~QDomElement ()
</h3>
Destroys the object and frees its resources.
<h3 class=fn><a href="qstring.html">QString</a> <a name="attribute"></a>QDomElement::attribute ( const <a href="qstring.html">QString</a> & name, const <a href="qstring.html">QString</a> & defValue = QString::null ) const
</h3>
Returns the attribute called <em>name</em>. If the attribute does not
exist <em>defValue</em> is returned.
<p> <p>See also <a href="#setAttribute">setAttribute</a>(), <a href="#attributeNode">attributeNode</a>(), <a href="#setAttributeNode">setAttributeNode</a>(), and <a href="#attributeNS">attributeNS</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="attributeNS"></a>QDomElement::attributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & localName, const <a href="qstring.html">QString</a> & defValue ) const
</h3>
Returns the attribute with the local name <em>localName</em> and the
namespace URI <em>nsURI</em>. If the attribute does not exist <em>defValue</em> is returned.
<p> <p>See also <a href="#setAttributeNS">setAttributeNS</a>(), <a href="#attributeNodeNS">attributeNodeNS</a>(), <a href="#setAttributeNodeNS">setAttributeNodeNS</a>(), and <a href="#attribute">attribute</a>().
<h3 class=fn><a href="qdomattr.html">QDomAttr</a> <a name="attributeNode"></a>QDomElement::attributeNode ( const <a href="qstring.html">QString</a> & name )
</h3>
Returns the <a href="qdomattr.html">QDomAttr</a> object that corresponds to the attribute
called <em>name</em>. If no such attribute exists a <a href="qdomnode.html#isNull">null attribute</a> is returned.
<p> <p>See also <a href="#setAttributeNode">setAttributeNode</a>(), <a href="#attribute">attribute</a>(), <a href="#setAttribute">setAttribute</a>(), and <a href="#attributeNodeNS">attributeNodeNS</a>().
<h3 class=fn><a href="qdomattr.html">QDomAttr</a> <a name="attributeNodeNS"></a>QDomElement::attributeNodeNS ( const <a href="qstring.html">QString</a> & nsURI, const <a href="qstring.html">QString</a> & localName )
</h3>
Returns the <a href="qdomattr.html">QDomAttr</a> object that corresponds to the attribute with
the local name <em>localName</em> and the namespace URI <em>nsURI</em>. If no
such attribute exists a <a href="qdomnode.html#isNull">null
attribute</a> is returned.
<p> <p>See also <a href="#setAttributeNode">setAttributeNode</a>(), <a href="#attribute">attribute</a>(), and <a href="#setAttribute">setAttribute</a>().
<h3 class=fn><a href="qdomnamednodemap.html">QDomNamedNodeMap</a> <a name="attributes"></a>QDomElement::attributes () const<tt> [virtual]</tt>
</h3>
Returns a <a href="qdomnamednodemap.html">QDomNamedNodeMap</a> containing all this element's attributes.
<p> <p>See also <a href="#attribute">attribute</a>(), <a href="#setAttribute">setAttribute</a>(), <a href="#attributeNode">attributeNode</a>(), and <a href="#setAttributeNode">setAttributeNode</a>().
<p>Reimplemented from <a href="qdomnode.html#attributes">QDomNode</a>.
<h3 class=fn><a href="qdomnodelist.html">QDomNodeList</a> <a name="elementsByTagName"></a>QDomElement::elementsByTagName ( const <a href="qstring.html">QString</a> & tagname ) const<tt> [virtual]</tt>
</h3>
Returns a <a href="qdomnodelist.html">QDomNodeList</a> containing all descendent elements of this
element that are called <em>tagname</em>. The order they are in the node
list is the order they are encountered in a preorder traversal of
the element tree.
<p> <p>See also <a href="#elementsByTagNameNS">elementsByTagNameNS</a>() and <a href="qdomdocument.html#elementsByTagName">QDomDocument::elementsByTagName</a>().
<h3 class=fn><a href="qdomnodelist.html">QDomNodeList</a> <a name="elementsByTagNameNS"></a>QDomElement::elementsByTagNameNS ( const <a href="qstring.html">QString</a> & nsURI, const <a href="qstring.html">QString</a> & localName ) const<tt> [virtual]</tt>
</h3>
Returns a <a href="qdomnodelist.html">QDomNodeList</a> containing all the descendent elements of
this element with the local name <em>localName</em> and the namespace
URI <em>nsURI</em>. The order they are in the node list is the order
they are encountered in a preorder traversal of the element tree.
<p> <p>See also <a href="#elementsByTagName">elementsByTagName</a>() and <a href="qdomdocument.html#elementsByTagNameNS">QDomDocument::elementsByTagNameNS</a>().
<h3 class=fn>bool <a name="hasAttribute"></a>QDomElement::hasAttribute ( const <a href="qstring.html">QString</a> & name ) const
</h3>
Returns TRUE if this element has an attribute called <em>name</em>;
otherwise returns FALSE.
<h3 class=fn>bool <a name="hasAttributeNS"></a>QDomElement::hasAttributeNS ( const <a href="qstring.html">QString</a> & nsURI, const <a href="qstring.html">QString</a> & localName ) const
</h3>
Returns TRUE if this element has an attribute with the local name
<em>localName</em> and the namespace URI <em>nsURI</em>; otherwise returns
FALSE.
<h3 class=fn>bool <a name="isElement"></a>QDomElement::isElement () const<tt> [virtual]</tt>
</h3>
Returns TRUE.
<p>Reimplemented from <a href="qdomnode.html#isElement">QDomNode</a>.
<h3 class=fn><a href="qdomnode.html#NodeType-enum">QDomNode::NodeType</a> <a name="nodeType"></a>QDomElement::nodeType () const<tt> [virtual]</tt>
</h3>
Returns <a href="qdomnode.html#NodeType-enum">ElementNode</a>.
<p>Reimplemented from <a href="qdomnode.html#nodeType">QDomNode</a>.
<h3 class=fn><a href="qdomelement.html">QDomElement</a> & <a name="operator-eq"></a>QDomElement::operator= ( const <a href="qdomelement.html">QDomElement</a> & x )
</h3>
Assigns <em>x</em> to this DOM element.
<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>void <a name="removeAttribute"></a>QDomElement::removeAttribute ( const <a href="qstring.html">QString</a> & name )
</h3>
Removes the attribute called name <em>name</em> from this element.
<p> <p>See also <a href="#setAttribute">setAttribute</a>(), <a href="#attribute">attribute</a>(), and <a href="#removeAttributeNS">removeAttributeNS</a>().
<h3 class=fn>void <a name="removeAttributeNS"></a>QDomElement::removeAttributeNS ( const <a href="qstring.html">QString</a> & nsURI, const <a href="qstring.html">QString</a> & localName )
</h3>
Removes the attribute with the local name <em>localName</em> and the
namespace URI <em>nsURI</em> from this element.
<p> <p>See also <a href="#setAttributeNS">setAttributeNS</a>(), <a href="#attributeNS">attributeNS</a>(), and <a href="#removeAttribute">removeAttribute</a>().
<h3 class=fn><a href="qdomattr.html">QDomAttr</a> <a name="removeAttributeNode"></a>QDomElement::removeAttributeNode ( const <a href="qdomattr.html">QDomAttr</a> & oldAttr )
</h3>
Removes the attribute <em>oldAttr</em> from the element and returns it.
<p> <p>See also <a href="#attributeNode">attributeNode</a>() and <a href="#setAttributeNode">setAttributeNode</a>().
<h3 class=fn>void <a name="setAttribute"></a>QDomElement::setAttribute ( const <a href="qstring.html">QString</a> & name, const <a href="qstring.html">QString</a> & value )
</h3>
Adds an attribute called <em>name</em> with value <em>value</em>. If an
attribute with the same name exists, its value is replaced by <em>value</em>.
<p> <p>See also <a href="#attribute">attribute</a>(), <a href="#setAttributeNode">setAttributeNode</a>(), and <a href="#setAttributeNS">setAttributeNS</a>().
<h3 class=fn>void <a name="setAttribute-2"></a>QDomElement::setAttribute ( const <a href="qstring.html">QString</a> & name, int value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttribute-3"></a>QDomElement::setAttribute ( const <a href="qstring.html">QString</a> & name, uint value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttribute-4"></a>QDomElement::setAttribute ( const <a href="qstring.html">QString</a> & name, long value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttribute-5"></a>QDomElement::setAttribute ( const <a href="qstring.html">QString</a> & name, ulong value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttribute-6"></a>QDomElement::setAttribute ( const <a href="qstring.html">QString</a> & name, double value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttributeNS"></a>QDomElement::setAttributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & qName, const <a href="qstring.html">QString</a> & value )
</h3>
Adds an attribute with the qualified name <em>qName</em> and the
namespace URI <em>nsURI</em> with the value <em>value</em>. If an attribute
with the same local name and namespace URI exists, its prefix is
replaced by the prefix of <em>qName</em> and its value is repaced by <em>value</em>.
<p> Although <em>qName</em> is the qualified name, the local name is used to
decide if an existing attribute's value should be replaced.
<p> <p>See also <a href="#attributeNS">attributeNS</a>(), <a href="#setAttributeNodeNS">setAttributeNodeNS</a>(), and <a href="#setAttribute">setAttribute</a>().
<h3 class=fn>void <a name="setAttributeNS-2"></a>QDomElement::setAttributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & qName, int value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttributeNS-3"></a>QDomElement::setAttributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & qName, uint value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttributeNS-4"></a>QDomElement::setAttributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & qName, long value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttributeNS-5"></a>QDomElement::setAttributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & qName, ulong value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>void <a name="setAttributeNS-6"></a>QDomElement::setAttributeNS ( const <a href="qstring.html">QString</a> nsURI, const <a href="qstring.html">QString</a> & qName, double value )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn><a href="qdomattr.html">QDomAttr</a> <a name="setAttributeNode"></a>QDomElement::setAttributeNode ( const <a href="qdomattr.html">QDomAttr</a> & newAttr )
</h3>
Adds the attribute <em>newAttr</em> to this element.
<p> If the element has another attribute that has the same name as <em>newAttr</em>, this function replaces that attribute and returns it;
otherwise the function returns a <a href="qdomnode.html#isNull">null
attribute</a>.
<p> <p>See also <a href="#attributeNode">attributeNode</a>(), <a href="#setAttribute">setAttribute</a>(), and <a href="#setAttributeNodeNS">setAttributeNodeNS</a>().
<h3 class=fn><a href="qdomattr.html">QDomAttr</a> <a name="setAttributeNodeNS"></a>QDomElement::setAttributeNodeNS ( const <a href="qdomattr.html">QDomAttr</a> & newAttr )
</h3>
Adds the attribute <em>newAttr</em> to this element.
<p> If the element has another attribute that has the same local name
and namespace URI as <em>newAttr</em>, this function replaces that
attribute and returns it; otherwise the function returns a <a href="qdomnode.html#isNull">null attribute</a>.
<p> <p>See also <a href="#attributeNodeNS">attributeNodeNS</a>(), <a href="#setAttributeNS">setAttributeNS</a>(), and <a href="#setAttributeNode">setAttributeNode</a>().
<h3 class=fn>void <a name="setTagName"></a>QDomElement::setTagName ( const <a href="qstring.html">QString</a> & name )
</h3>
Sets this element's tag name to <em>name</em>.
<p> <p>See also <a href="#tagName">tagName</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="tagName"></a>QDomElement::tagName () const
</h3>
Returns the tag name of this element. For an XML element like this:
<pre>
<img src="myimg.png">
</pre>
the tagname would return "img".
<p> <p>See also <a href="#setTagName">setTagName</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="text"></a>QDomElement::text () const
</h3>
Returns the element's text or <a href="qstring.html#QString-null">QString::null</a>.
<p> Example:
<pre>
<h1>Hello <b>Qt</b> <![CDATA[<xml is cool>]]></h1>
</pre>
<p> The function <a href="#text">text</a>() of the QDomElement for the <h1> tag,
will return "Hello Qt <xml is cool>".
<p> Comments are ignored by this function. It only evaluates <a href="qdomtext.html">QDomText</a>
and <a href="qdomcdatasection.html">QDomCDATASection</a> objects.
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