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<h1>DOMNodeIterator Class Reference</h1><!-- doxytag: class="DOMNodeIterator" --><code>DOMNodeIterators</code> are used to step through a set of nodes, e.g.  
<a href="#_details">More...</a>
<p>

<p>
<a href="classDOMNodeIterator-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Destructor</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#fff63c093ecfb3875e1745799528215b">~DOMNodeIterator</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Destructor.  <a href="#fff63c093ecfb3875e1745799528215b"></a><br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Functions introduced in DOM Level 2</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classDOMNode.html">DOMNode</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#e0d9e45b67db8611aef943caee6b3be0">getRoot</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">The <code>root</code> node of the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code>, as specified when it was created.  <a href="#e0d9e45b67db8611aef943caee6b3be0"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual unsigned long&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#158d09309300c7388c2e53fc515c5c95">getWhatToShow</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return which node types are presented via the iterator.  <a href="#158d09309300c7388c2e53fc515c5c95"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classDOMNodeFilter.html">DOMNodeFilter</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#f1ca0dcbf2ce5ab9396f6f35d2769dff">getFilter</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">The <code><a class="el" href="classDOMNodeFilter.html" title="Filters are objects that know how to &quot;filter out&quot; nodes.">DOMNodeFilter</a></code> used to screen nodes.  <a href="#f1ca0dcbf2ce5ab9396f6f35d2769dff"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#b588cd981c8402be330f07f0e6b8002e">getExpandEntityReferences</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return the expandEntityReferences flag.  <a href="#b588cd981c8402be330f07f0e6b8002e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classDOMNode.html">DOMNode</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#a745a93c0dae8cda260a3e93473da8ad">nextNode</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Returns the next node in the set and advances the position of the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> in the set.  <a href="#a745a93c0dae8cda260a3e93473da8ad"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classDOMNode.html">DOMNode</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#1d3b3311004f9a8ed65ae576afe50deb">previousNode</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Returns the previous node in the set and moves the position of the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> backwards in the set.  <a href="#1d3b3311004f9a8ed65ae576afe50deb"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#8bd215b2a079de9ee273eb8ba36301ca">detach</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Detaches the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> from the set which it iterated over, releasing any computational resources and placing the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> in the INVALID state.  <a href="#8bd215b2a079de9ee273eb8ba36301ca"></a><br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Non-standard Extension</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#5f695123d979adf4b02473f1a854d7ad">release</a> ()=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Called to indicate that this NodeIterator is no longer in use and that the implementation may relinquish any resources associated with it.  <a href="#5f695123d979adf4b02473f1a854d7ad"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Hidden constructors</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#863cbd96220a85aac998d89753738cd1">DOMNodeIterator</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMNodeIterator.html#f3e7073806964d4129d31a7d2d390f85">DOMNodeIterator</a> (const <a class="el" href="classDOMNodeIterator.html">DOMNodeIterator</a> &amp;)</td></tr>

</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<code>DOMNodeIterators</code> are used to step through a set of nodes, e.g. 
<p>
the set of nodes in a <code><a class="el" href="classDOMNodeList.html" title="The DOMNodeList interface provides the abstraction of an ordered collection of nodes...">DOMNodeList</a></code>, the document subtree governed by a particular <code><a class="el" href="classDOMNode.html" title="The DOMNode interface is the primary datatype for the entire Document Object Model...">DOMNode</a></code>, 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 <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code>. DOM Level 2 specifies a single <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> implementation for document-order traversal of a document subtree. Instances of these <code>DOMNodeIterators</code> are created by calling <code><a class="el" href="classDOMDocumentTraversal.html" title="DOMDocumentTraversal contains methods that create DOMNodeIterators and DOMTreeWalkers...">DOMDocumentTraversal</a></code><code>.createNodeIterator()</code>. <p>
See also the <a href="http://www.w3.org/TR/2000/REC-DOM-Level-2-Traversal-Range-20001113">Document Object Model (DOM) Level 2 Traversal and Range Specification</a>. <dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>
<hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="863cbd96220a85aac998d89753738cd1"></a><!-- doxytag: member="DOMNodeIterator::DOMNodeIterator" ref="863cbd96220a85aac998d89753738cd1" args="()" -->
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        <tr>
          <td class="memname">DOMNodeIterator::DOMNodeIterator           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"><code> [protected]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>

</div>
</div><p>
<a class="anchor" name="f3e7073806964d4129d31a7d2d390f85"></a><!-- doxytag: member="DOMNodeIterator::DOMNodeIterator" ref="f3e7073806964d4129d31a7d2d390f85" args="(const DOMNodeIterator &amp;)" -->
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      <table class="memname">
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          <td class="memname">DOMNodeIterator::DOMNodeIterator           </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classDOMNodeIterator.html">DOMNodeIterator</a> &amp;&nbsp;</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"><code> [protected]</code></td>
        </tr>
      </table>
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<div class="memdoc">

<p>

</div>
</div><p>
<a class="anchor" name="fff63c093ecfb3875e1745799528215b"></a><!-- doxytag: member="DOMNodeIterator::~DOMNodeIterator" ref="fff63c093ecfb3875e1745799528215b" args="()" -->
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          <td class="memname">virtual DOMNodeIterator::~DOMNodeIterator           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"><code> [virtual]</code></td>
        </tr>
      </table>
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<div class="memdoc">

<p>
Destructor. 
<p>

</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="e0d9e45b67db8611aef943caee6b3be0"></a><!-- doxytag: member="DOMNodeIterator::getRoot" ref="e0d9e45b67db8611aef943caee6b3be0" args="()=0" -->
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      <table class="memname">
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          <td class="memname">virtual <a class="el" href="classDOMNode.html">DOMNode</a>* DOMNodeIterator::getRoot           </td>
          <td>(</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%"><code> [pure virtual]</code></td>
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The <code>root</code> node of the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code>, as specified when it was created. 
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<dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="158d09309300c7388c2e53fc515c5c95"></a><!-- doxytag: member="DOMNodeIterator::getWhatToShow" ref="158d09309300c7388c2e53fc515c5c95" args="()=0" -->
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          <td class="memname">virtual unsigned long DOMNodeIterator::getWhatToShow           </td>
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Return which node types are presented via the iterator. 
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This attribute determines which node types are presented via the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code>. The available set of constants is defined in the <code><a class="el" href="classDOMNodeFilter.html" title="Filters are objects that know how to &quot;filter out&quot; nodes.">DOMNodeFilter</a></code> interface. Nodes not accepted by <code>whatToShow</code> will be skipped, but their children may still be considered. Note that this skip takes precedence over the filter, if any. <dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="f1ca0dcbf2ce5ab9396f6f35d2769dff"></a><!-- doxytag: member="DOMNodeIterator::getFilter" ref="f1ca0dcbf2ce5ab9396f6f35d2769dff" args="()=0" -->
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The <code><a class="el" href="classDOMNodeFilter.html" title="Filters are objects that know how to &quot;filter out&quot; nodes.">DOMNodeFilter</a></code> used to screen nodes. 
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<dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="b588cd981c8402be330f07f0e6b8002e"></a><!-- doxytag: member="DOMNodeIterator::getExpandEntityReferences" ref="b588cd981c8402be330f07f0e6b8002e" args="()=0" -->
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Return the expandEntityReferences flag. 
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The value of this flag determines whether the children of entity reference nodes are visible to the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code>. If false, these children and their descendants will be rejected. Note that this rejection takes precedence over <code>whatToShow</code> and the filter. Also note that this is currently the only situation where <code>DOMNodeIterators</code> may reject a complete subtree rather than skipping individual nodes. <br>
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 To produce a view of the document that has entity references expanded and does not expose the entity reference node itself, use the <code>whatToShow</code> flags to hide the entity reference node and set <code>expandEntityReferences</code> to true when creating the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code>. To produce a view of the document that has entity reference nodes but no entity expansion, use the <code>whatToShow</code> flags to show the entity reference node and set <code>expandEntityReferences</code> to false.<p>
<dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="a745a93c0dae8cda260a3e93473da8ad"></a><!-- doxytag: member="DOMNodeIterator::nextNode" ref="a745a93c0dae8cda260a3e93473da8ad" args="()=0" -->
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          <td class="memname">virtual <a class="el" href="classDOMNode.html">DOMNode</a>* DOMNodeIterator::nextNode           </td>
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Returns the next node in the set and advances the position of the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> in the set. 
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After a <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> is created, the first call to <code><a class="el" href="classDOMNodeIterator.html#a745a93c0dae8cda260a3e93473da8ad" title="Returns the next node in the set and advances the position of the DOMNodeIterator...">nextNode()</a></code> returns the first node in the set. <dl class="return" compact><dt><b>Returns:</b></dt><dd>The next <code><a class="el" href="classDOMNode.html" title="The DOMNode interface is the primary datatype for the entire Document Object Model...">DOMNode</a></code> in the set being iterated over, or <code>null</code> if there are no more members in that set. </dd></dl>
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    <tr><td valign="top"></td><td valign="top"><em><a class="el" href="classDOMException.html">DOMException</a></em>&nbsp;</td><td>INVALID_STATE_ERR: Raised if this method is called after the <code>detach</code> method was invoked. </td></tr>
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<dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="1d3b3311004f9a8ed65ae576afe50deb"></a><!-- doxytag: member="DOMNodeIterator::previousNode" ref="1d3b3311004f9a8ed65ae576afe50deb" args="()=0" -->
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Returns the previous node in the set and moves the position of the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> backwards in the set. 
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<dl class="return" compact><dt><b>Returns:</b></dt><dd>The previous <code><a class="el" href="classDOMNode.html" title="The DOMNode interface is the primary datatype for the entire Document Object Model...">DOMNode</a></code> in the set being iterated over, or <code>null</code> if there are no more members in that set. </dd></dl>
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    <tr><td valign="top"></td><td valign="top"><em><a class="el" href="classDOMException.html">DOMException</a></em>&nbsp;</td><td>INVALID_STATE_ERR: Raised if this method is called after the <code>detach</code> method was invoked. </td></tr>
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<dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="8bd215b2a079de9ee273eb8ba36301ca"></a><!-- doxytag: member="DOMNodeIterator::detach" ref="8bd215b2a079de9ee273eb8ba36301ca" args="()=0" -->
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Detaches the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> from the set which it iterated over, releasing any computational resources and placing the <code><a class="el" href="classDOMNodeIterator.html" title="DOMNodeIterators are used to step through a set of nodes, e.g.">DOMNodeIterator</a></code> in the INVALID state. 
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After <code>detach</code> has been invoked, calls to <code>nextNode</code> or <code>previousNode</code> will raise the exception INVALID_STATE_ERR. <dl class="since" compact><dt><b>Since:</b></dt><dd>DOM Level 2 </dd></dl>

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<a class="anchor" name="5f695123d979adf4b02473f1a854d7ad"></a><!-- doxytag: member="DOMNodeIterator::release" ref="5f695123d979adf4b02473f1a854d7ad" args="()=0" -->
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          <td class="memname">virtual void DOMNodeIterator::release           </td>
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Called to indicate that this NodeIterator is no longer in use and that the implementation may relinquish any resources associated with it. 
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(<a class="el" href="classDOMNodeIterator.html#5f695123d979adf4b02473f1a854d7ad" title="Called to indicate that this NodeIterator is no longer in use and that the implementation...">release()</a> will call <a class="el" href="classDOMNodeIterator.html#8bd215b2a079de9ee273eb8ba36301ca" title="Detaches the DOMNodeIterator from the set which it iterated over, releasing any computational...">detach()</a> where appropriate)<p>
Access to a released object will lead to unexpected result. 
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="DOMNodeIterator_8hpp-source.html">DOMNodeIterator.hpp</a></ul>
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