ontransformnode Event
Fires before the style sheet is applied to a node.
Important
The ontransformnode event does not fire on DOMDocument for style sheets using the XSLT namespace "http://www.w3.org/1999/XSL/Transform". It does, however, fire on DOMDocument for style sheets using the XSL namespace "http://www.w3.org/XSL/Transform/1.0" or where MSXML 3.0 is installed you use "http://www.w3.org/TR/WD-xsl" to declare the older XSL namespace .
JScript Syntax
boolVal = ontransformnode(nodeCode, nodeData);
Parameters
nodeCode
The indicator of the current node in the style sheet.
nodeData
The indicator of the current node in the XML source data.
Return Value
True to indicate that transformation processing is to continue; False to indicate that transformation processing should stop.
Visual Basic Syntax
boolVal = ontransformnode
(nodeCode, nodeData)
Parameters
nodeCode
The indicator of the current node in the style sheet.
nodeData
The indicator of the current node in the XML source data.
Return Value
True to indicate that transformation processing is to continue; False to indicate that transformation processing should stop.
Example
In this example, the XML data island named "target" contains the XML source data, and the XML data island named "ss" contains the XSL Transformations (XSLT) style sheet.
<XML id="target">
<PEOPLE>
<PERSON name="Atkinson, Teresa" />
<PERSON name="Debroux, Steve" />
<PERSON name="O'Hara, Robert" />
<PERSON name="Porzuczek, Peter" />
</PEOPLE>
</XML>
<XML id="ss">
<xsl:template match="/" xmlns:xsl="http://www.w3.org/XSL/Transform/1.0">
<xsl:for-each select="/PEOPLE/PERSON/@name" >
<P><xsl:value-of /></P>
</xsl:for-each>
</xsl:template>
</XML>
Example
This script contains the Verify function, which sets the ontransformnode property to the event handler, onxform. The event handler is called before the transformation operation on each node so that, given the sample data provided in the data islands, this sample calls the alert several times.
<SCRIPT LANGUAGE="javascript" FOR="window" EVENT="onload">
document.expando = false;
Verify();
</SCRIPT>
<Script LANGUAGE="javascript">
function onxform ( code, doc ) {
alert("Target document node being transformed:\n\n" + doc.xml +
"\n\nStylesheet node used for the transform:\n\n" + code.xml);
if (doc.value == "O'Hara, Robert")
return false; // Stop processing.
else
return true;
}
function Verify() {
target.ontransformnode = onxform;
var sOut = target.XMLDocument.transformNode(ss.XMLDocument);
div.innerHTML += sOut;
}
</Script>
<DIV id="div"></DIV>
</BODY>
</HTML>
The return value from the event handler indicates whether to continue processing. In this example, the event handler checks for a particular data value and returns the value "false" to stop transformation processing.
C/C++ Syntax
HRESULT ontransformnode(
IXMLDOMNode *pCode,
IXMLDOMNode *pData,
VARIANT vBool);
Parameters
pCode[in]
The address of the current node in the XSL style sheet.
pData[in]
The address of the current node in the XML source data.
vBool[out, retval]
Boolean. True if transformation processing is to continue; False to stop transformation processing.
Return Values
S_OK
The value returned if successful.
Remarks
The event handler for this event can be explicitly set using the ontransformnode property.
This member is an extension of the Worldwide Web Consortium (W3C) Document Object Model (DOM).
Versioning
Implemented in: MSXML 3.0 and MSXML 6.0