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<h1>DOMUserDataHandler Class Reference</h1>When associating an object to a key on a node using <code>setUserData</code> the application can provide a handler that gets called when the node the object is associated to is being cloned or imported.  
<a href="#_details">More...</a>
<p>
<a href="classDOMUserDataHandler-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 Types</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Public Constants</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">enum &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classDOMUserDataHandler.html#z343_0">DOMOperationType</a> { <a class="el" href="classDOMUserDataHandler.html#z343_0w0">NODE_CLONED</a> =  1, 
<a class="el" href="classDOMUserDataHandler.html#z343_0w1">NODE_IMPORTED</a> =  2, 
<a class="el" href="classDOMUserDataHandler.html#z343_0w2">NODE_DELETED</a> =  3, 
<a class="el" href="classDOMUserDataHandler.html#z343_0w3">NODE_RENAMED</a> =  4
 }</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Operation Type.  <a href="classDOMUserDataHandler.html#z343_0">More...</a><br></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="classDOMUserDataHandler.html#z341_0">~DOMUserDataHandler</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Destructor.  <a href="#z341_0"></a><br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Functions introduced in DOM Level 3</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="classDOMUserDataHandler.html#z345_0">handle</a> (<a class="el" href="classDOMUserDataHandler.html#z343_0">DOMOperationType</a> operation, const XMLCh *const key, void *data, const <a class="el" href="classDOMNode.html">DOMNode</a> *src, const <a class="el" href="classDOMNode.html">DOMNode</a> *dst)=0</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This method is called whenever the node for which this handler is registered is imported or cloned.  <a href="#z345_0"></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="classDOMUserDataHandler.html#z337_0">DOMUserDataHandler</a> ()</td></tr>

</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
When associating an object to a key on a node using <code>setUserData</code> the application can provide a handler that gets called when the node the object is associated to is being cloned or imported. 
<p>
This can be used by the application to implement various behaviors regarding the data it associates to the DOM nodes. This interface defines that handler.<p>
<b>"Experimental - subject to change"</b><p>
See also the <a href="http://www.w3.org/2001/07/WD-DOM-Level-3-Core-20010726">Document Object Model (DOM) Level 3 Core Specification</a>. <dl compact><dt><b>Since:</b></dt><dd>DOM Level 3 </dd></dl>

<p>
<hr><h2>Member Enumeration Documentation</h2>
<a class="anchor" name="z343_0" doxytag="DOMUserDataHandler::DOMOperationType"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">enum <a class="el" href="classDOMUserDataHandler.html#z343_0">DOMUserDataHandler::DOMOperationType</a>          </td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Operation Type. 
<p>
<code>NODE_CLONED:</code> The node is cloned.<p>
<code>NODE_IMPORTED</code> The node is imported.<p>
<code>NODE_DELETED</code> The node is deleted.<p>
<code>NODE_RENAMED</code> The node is renamed.<p>
<b>"Experimental - subject to change"</b><p>
<dl compact><dt><b>Since:</b></dt><dd>DOM Level 3 </dd></dl>
<dl compact><dt><b>Enumeration values: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" name="z343_0w0" doxytag="NODE_CLONED"></a>NODE_CLONED</em>&nbsp;</td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" name="z343_0w1" doxytag="NODE_IMPORTED"></a>NODE_IMPORTED</em>&nbsp;</td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" name="z343_0w2" doxytag="NODE_DELETED"></a>NODE_DELETED</em>&nbsp;</td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" name="z343_0w3" doxytag="NODE_RENAMED"></a>NODE_RENAMED</em>&nbsp;</td><td>
</td></tr>
</table>
</dl>
    </td>
  </tr>
</table>
<hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="z337_0" doxytag="DOMUserDataHandler::DOMUserDataHandler"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">DOMUserDataHandler::DOMUserDataHandler           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
    </td>
  </tr>
</table>
<a class="anchor" name="z341_0" doxytag="DOMUserDataHandler::~DOMUserDataHandler"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">virtual DOMUserDataHandler::~<a class="el" href="classDOMUserDataHandler.html">DOMUserDataHandler</a>           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Destructor. 
<p>
    </td>
  </tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="z345_0" doxytag="DOMUserDataHandler::handle"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">virtual void DOMUserDataHandler::handle           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classDOMUserDataHandler.html#z343_0">DOMOperationType</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>operation</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>const XMLCh *const &nbsp;</td>
          <td class="mdname" nowrap> <em>key</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>void *&nbsp;</td>
          <td class="mdname" nowrap> <em>data</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>const <a class="el" href="classDOMNode.html">DOMNode</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>src</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>const <a class="el" href="classDOMNode.html">DOMNode</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>dst</em></td>
        </tr>
        <tr>
          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [pure virtual]</code></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
This method is called whenever the node for which this handler is registered is imported or cloned. 
<p>
<b>"Experimental - subject to change"</b><p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>operation</em>&nbsp;</td><td>Specifies the type of operation that is being performed on the node. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>key</em>&nbsp;</td><td>Specifies the key for which this handler is being called. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>data</em>&nbsp;</td><td>Specifies the data for which this handler is being called. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>src</em>&nbsp;</td><td>Specifies the node being cloned, imported, or renamed. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>dst</em>&nbsp;</td><td>Specifies the node newly created. </td></tr>
  </table>
</dl>
<dl compact><dt><b>Since:</b></dt><dd>DOM Level 3 </dd></dl>
    </td>
  </tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="DOMUserDataHandler_8hpp-source.html">DOMUserDataHandler.hpp</a></ul>
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