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KDE 4.4 PyKDE API Reference
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<h1>NodeIterator Class Reference</h1>
<code>from PyKDE4.khtml import *</code>
<p>
Namespace: DOM.NodeIterator<br />
<h2>Detailed Description</h2>
<p>NodeIterators are used to step through a set of nodes, e.g. the set
of nodes in a NodeList, the document subtree governed by a
particular node, the results of a query, or any other set of nodes.
The set of nodes to be iterated is determined by the implementation
of the NodeIterator. DOM Level 2 specifies a single NodeIterator
implementation for document-order traversal of a document subtree.
Instances of these iterators are created by calling
DocumentTraversal.createNodeIterator().
</p>
<p>
Any Iterator that returns nodes may implement the
NodeIterator interface. Users and vendor libraries may also
choose to create Iterators that implement the NodeIterator
interface.
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#NodeIterator">__init__</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#NodeIterator">__init__</a> (self, <a href="../khtml/DOM.NodeIterator.html">DOM.NodeIterator</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#detach">detach</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#expandEntityReferences">expandEntityReferences</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../khtml/DOM.NodeFilter.html">DOM.NodeFilter</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#filter">filter</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isNull">isNull</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../khtml/DOM.Node.html">DOM.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#nextNode">nextNode</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../khtml/DOM.Node.html">DOM.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#previousNode">previousNode</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../khtml/DOM.Node.html">DOM.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#root">root</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="#whatToShow">whatToShow</a> (self)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="NodeIterator"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"></div></div><a class="anchor" name="NodeIterator"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../khtml/DOM.NodeIterator.html">DOM.NodeIterator</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"></div></div><a class="anchor" name="detach"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> detach</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Detaches the NodeIterator from the set which it iterated over,
releasing any computational resources and placing the iterator in the
INVALID state. After detach has been invoked, calls to nextNode or
previousNode will raise the exception INVALID_STATE_ERR.
</p></div></div><a class="anchor" name="expandEntityReferences"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool expandEntityReferences</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>The value of this flag determines whether the children of entity
reference nodes are visible to the iterator. If false, they and
their descendents will be rejected. Note that this rejection takes
precedence over whatToShow and the filter. Also note that this is
currently the only situation where NodeIterators may reject a complete
subtree rather than skipping individual nodes.
</p>
<p>
To produce a view of the document that has entity references expanded
and does not expose the entity reference node itself, use the whatToShow
flags to hide the entity reference node and set expandEntityReferences to
true when creating the iterator. To produce a view of the document that
has entity reference nodes but no entity expansion, use the whatToShow
flags to show the entity reference node and set expandEntityReferences to
false.
</p></div></div><a class="anchor" name="filter"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../khtml/DOM.NodeFilter.html">DOM.NodeFilter</a> filter</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>The NodeFilter used to screen nodes.
</p></div></div><a class="anchor" name="isNull"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool isNull</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"></div></div><a class="anchor" name="nextNode"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../khtml/DOM.Node.html">DOM.Node</a> nextNode</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the next node in the set and advances the position of
the Iterator in the set. After a NodeIterator is created, the
first call to nextNode() returns the first node in the set.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> The next Node in the set being iterated
over, or null if there are no more members in
that set.
</dd></dl> </p>
<p>
Exceptions from user code
Any exceptions raised by a user-written Filter will propagate
through.
</p></div></div><a class="anchor" name="previousNode"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../khtml/DOM.Node.html">DOM.Node</a> previousNode</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the previous node in the set and moves the position of
the Iterator backwards in the set.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> The previous Node in the set being
iterated over, or null if there are no more
members in that set.
</dd></dl> </p>
<p>
Exceptions from user code
Any exceptions raised by a user-written Filter will propagate
through.
</p></div></div><a class="anchor" name="root"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../khtml/DOM.Node.html">DOM.Node</a> root</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>The root node of the NodeIterator, as specified when it was created.
</p></div></div><a class="anchor" name="whatToShow"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">long whatToShow</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>This attribute determines which node types are presented via the
iterator. The available set of constants is defined in the NodeFilter
interface. Nodes not accepted by whatToShow will be skipped, but their
children may still be considered. Note that this skip takes precedence
over the filter, if any.
</p></div></div>
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This documentation is maintained by <a href="mailto:simon@simonzone.com">Simon Edwards</a>.<br />
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