From 7bf9027c47a882c10679a293697837a32f56671a Mon Sep 17 00:00:00 2001
From: Bob Stayton <bobs@sagehill.net>
Date: Mon, 3 Oct 2011 15:51:48 +0000
Subject: [PATCH] Allow selection by role for multiple imageobject elements
 within an imageobjectco, which since Docbook 5 allows multiple imageobjects.

---
 xsl/fo/graphics.xsl   | 26 +++++++++++++++++++++++++-
 xsl/html/graphics.xsl | 26 +++++++++++++++++++++++++-
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/xsl/fo/graphics.xsl b/xsl/fo/graphics.xsl
index 1154f8483..151acd27c 100644
--- a/xsl/fo/graphics.xsl
+++ b/xsl/fo/graphics.xsl
@@ -434,8 +434,32 @@
 <!-- ==================================================================== -->
 
 <xsl:template match="imageobjectco">
-  <xsl:apply-templates select="imageobject"/>
+  <xsl:choose>
+    <!-- select one imageobject? -->
+    <xsl:when test="$use.role.for.mediaobject != 0 and
+                    count(imageobject) &gt; 1 and
+                    imageobject[@role]">
+      <xsl:variable name="olist" select="imageobject"/>
+    
+      <xsl:variable name="object.index">
+        <xsl:call-template name="select.mediaobject.index">
+          <xsl:with-param name="olist" select="$olist"/>
+          <xsl:with-param name="count" select="1"/>
+        </xsl:call-template>
+      </xsl:variable>
+    
+      <xsl:variable name="object" select="$olist[position() = $object.index]"/>
+    
+      <xsl:apply-templates select="$object"/>
+    </xsl:when>
+    <xsl:otherwise>
+      <!-- otherwise process them all -->
+      <xsl:apply-templates select="imageobject"/>
+    </xsl:otherwise>
+  </xsl:choose>
+
   <xsl:apply-templates select="calloutlist"/>
+
 </xsl:template>
 
 <xsl:template match="imageobject">
diff --git a/xsl/html/graphics.xsl b/xsl/html/graphics.xsl
index ac0550f48..b9df7a82f 100644
--- a/xsl/html/graphics.xsl
+++ b/xsl/html/graphics.xsl
@@ -1159,8 +1159,32 @@ valign: <xsl:value-of select="@valign"/></xsl:message>
 
 <xsl:template match="imageobjectco">
   <xsl:call-template name="anchor"/>
-  <xsl:apply-templates select="imageobject"/>
+  <xsl:choose>
+    <!-- select one imageobject? -->
+    <xsl:when test="$use.role.for.mediaobject != 0 and
+                    count(imageobject) &gt; 1 and
+                    imageobject[@role]">
+      <xsl:variable name="olist" select="imageobject"/>
+    
+      <xsl:variable name="object.index">
+        <xsl:call-template name="select.mediaobject.index">
+          <xsl:with-param name="olist" select="$olist"/>
+          <xsl:with-param name="count" select="1"/>
+        </xsl:call-template>
+      </xsl:variable>
+    
+      <xsl:variable name="object" select="$olist[position() = $object.index]"/>
+    
+      <xsl:apply-templates select="$object"/>
+    </xsl:when>
+    <xsl:otherwise>
+      <!-- otherwise process them all -->
+      <xsl:apply-templates select="imageobject"/>
+    </xsl:otherwise>
+  </xsl:choose>
+
   <xsl:apply-templates select="calloutlist"/>
+
 </xsl:template>
 
 <xsl:template match="imageobject">
-- 
2.40.0