1 <refentry xmlns="http://docbook.org/ns/docbook"
2 xmlns:xlink="http://www.w3.org/1999/xlink"
3 xmlns:xi="http://www.w3.org/2001/XInclude"
4 xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
5 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
6 version="5.0" xml:id="preferred.mediaobject.role">
8 <refentrytitle>preferred.mediaobject.role</refentrytitle>
9 <refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
12 <refname>preferred.mediaobject.role</refname>
13 <refpurpose>Select which mediaobject to use based on
14 this value of an object's <tag class="attribute">role</tag> attribute.
19 <src:fragment xml:id="preferred.mediaobject.role.frag">
20 <xsl:param name="preferred.mediaobject.role"/>
24 <refsection><info><title>Description</title></info>
26 <para>A mediaobject may contain several objects such as imageobjects.
27 If the parameter <parameter>use.role.for.mediaobject</parameter> is
28 non-zero, then the <literal>role</literal> attribute on
29 <tag>imageobject</tag>s and other objects within a
30 <tag>mediaobject</tag> container will be used to select which object
31 will be used. If one of the objects has a role value that matches the
32 <parameter>preferred.mediaobject.role</parameter> parameter, then it
33 has first priority for selection. If more than one has such a role
34 value, the first one is used.
37 See the <parameter>use.role.for.mediaobject</parameter> parameter
38 for the sequence of selection.</para>