Showing formatted XML / HTML

format.xhtml

<xh:html xmlns:xh="http://www.w3.org/1999/xhtml"
      xmlns:xf="http://www.w3.org/2002/xforms"
      xmlns:xxf="http://orbeon.org/oxf/xml/xforms"
      xmlns:ev="http://www.w3.org/2001/xml-events"
      xmlns:xs="http://www.w3.org/2001/XMLSchema"
      xmlns:fr="http://orbeon.org/oxf/xml/form-runner"
      xmlns:saxon="http://saxon.sf.net/"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xh:head>
        <xf:model>
            <xf:instance><source/></xf:instance>
            <xf:instance id="serialization">
                <xsl:output method="xml"
                            omit-xml-declaration="yes"
                            indent="yes"
                            saxon:indent-spaces="4"/>
            </xf:instance>
            <xf:instance xxf:exclude-result-prefixes="#all" id="hl7" xxf:strip="*">
                <REPC_IN000023NL xmlns="urn:hl7-org:v3">
                    <hl7:patientID xmlns:hl7="urn:hl7-org:v3">
                        <hl7:value root="2.16.840.1.113883.2.4.6.3" extension="999999035"/>
                    </hl7:patientID>
                </REPC_IN000023NL>
            </xf:instance>
            <xf:bind ref="." readonly="true()"/>
            <xf:action event="xforms-model-construct-done">
                <!-- Imperfect way to normalize text nodes in the instance, a-la-XSLT, for the indent to work  -->
                <xf:delete ref="instance('hl7')//text()[normalize-space() = '']"/>
                <xf:setvalue ref="." value="saxon:serialize(instance('hl7'), instance('serialization'))"/>
            </xf:action>
        </xf:model>
    </xh:head>
    <xh:body>
        <fr:code-mirror ref="instance()"/>
    </xh:body>
</xh:html>