From 741eaee90a1f9e3254809e3edf2e75d924358a0c Mon Sep 17 00:00:00 2001
From: Jirka Kosek <jirka@kosek.cz>
Date: Sat, 4 Oct 2003 17:11:11 +0000
Subject: [PATCH] Significant index terms can get special rendering in XEP

---
 xsl/fo/autoidx.xsl                            | 78 ++++++++++++++-----
 xsl/fo/index.xsl                              |  5 ++
 xsl/fo/param.ent                              |  1 +
 xsl/fo/param.xweb                             |  2 +
 .../index.preferred.page.properties.xml       | 25 ++++++
 5 files changed, 90 insertions(+), 21 deletions(-)
 create mode 100755 xsl/params/index.preferred.page.properties.xml

diff --git a/xsl/fo/autoidx.xsl b/xsl/fo/autoidx.xsl
index a729b2345..f5821d6eb 100644
--- a/xsl/fo/autoidx.xsl
+++ b/xsl/fo/autoidx.xsl
@@ -163,12 +163,17 @@
       <xsl:when test="$xep.extensions != 0">
         <xsl:if test="$refs[not(see) and not(seealso) and not(secondary)]">
           <xsl:text>, </xsl:text>
+          <xsl:variable name="primary" select="primary"/>
+          <xsl:variable name="primary.significant" select="concat(primary, $significant.flag)"/>
           <rx:page-index>
-            <rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
-              <xsl:attribute name="ref-key">
-                <xsl:value-of select="primary"/>
-              </xsl:attribute>
-            </rx:index-item>
+            <xsl:if test="$refs[@significance='preferred'][not(see) and not(seealso) and not(secondary)]">
+              <rx:index-item xsl:use-attribute-sets="index.preferred.page.properties xep.index.item.properties"
+                ref-key="{$primary.significant}"/>
+            </xsl:if>
+            <xsl:if test="$refs[not(@significance) or @significance!='preferred'][not(see) and not(seealso) and not(secondary)]">
+              <rx:index-item xsl:use-attribute-sets="xep.index.item.properties"
+                ref-key="{$primary}"/>
+            </xsl:if>
           </rx:page-index>        
         </xsl:if>
       </xsl:when>
@@ -236,14 +241,28 @@
       <xsl:when test="$xep.extensions != 0">
         <xsl:if test="$refs[not(see) and not(seealso) and not(tertiary)]">
           <xsl:text>, </xsl:text>
+          <xsl:variable name="primary" select="primary"/>
+          <xsl:variable name="secondary" select="secondary"/>
+          <xsl:variable name="primary.significant" select="concat(primary, $significant.flag)"/>
           <rx:page-index>
-            <rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
-              <xsl:attribute name="ref-key">
-                <xsl:value-of select="primary"/>
-                <xsl:text>, </xsl:text>
-                <xsl:value-of select="secondary"/>
-              </xsl:attribute>
-            </rx:index-item>
+            <xsl:if test="$refs[@significance='preferred'][not(see) and not(seealso) and not(tertiary)]">
+              <rx:index-item xsl:use-attribute-sets="index.preferred.page.properties xep.index.item.properties">
+                <xsl:attribute name="ref-key">
+                  <xsl:value-of select="$primary.significant"/>
+                  <xsl:text>, </xsl:text>
+                  <xsl:value-of select="$secondary"/>
+                </xsl:attribute>
+              </rx:index-item>
+            </xsl:if>
+            <xsl:if test="$refs[not(@significance) or @significance!='preferred'][not(see) and not(seealso) and not(tertiary)]">
+              <rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
+                <xsl:attribute name="ref-key">
+                  <xsl:value-of select="$primary"/>
+                  <xsl:text>, </xsl:text>
+                  <xsl:value-of select="$secondary"/>
+                </xsl:attribute>
+              </rx:index-item>
+            </xsl:if>
           </rx:page-index>
         </xsl:if>
       </xsl:when>
@@ -310,16 +329,33 @@
       <xsl:when test="$xep.extensions != 0">
         <xsl:if test="$refs[not(see) and not(seealso)]">
           <xsl:text>, </xsl:text>
+          <xsl:variable name="primary" select="primary"/>
+          <xsl:variable name="secondary" select="secondary"/>
+          <xsl:variable name="tertiary" select="tertiary"/>
+          <xsl:variable name="primary.significant" select="concat(primary, $significant.flag)"/>
           <rx:page-index>
-            <rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
-              <xsl:attribute name="ref-key">
-                <xsl:value-of select="primary"/>
-                <xsl:text>, </xsl:text>
-                <xsl:value-of select="secondary"/>
-                <xsl:text>, </xsl:text>
-                <xsl:value-of select="tertiary"/>
-              </xsl:attribute>
-            </rx:index-item>
+            <xsl:if test="$refs[@significance='preferred'][not(see) and not(seealso)]">
+              <rx:index-item xsl:use-attribute-sets="index.preferred.page.properties xep.index.item.properties">
+                <xsl:attribute name="ref-key">
+                  <xsl:value-of select="$primary.significant"/>
+                  <xsl:text>, </xsl:text>
+                  <xsl:value-of select="$secondary"/>
+                  <xsl:text>, </xsl:text>
+                  <xsl:value-of select="$tertiary"/>
+                </xsl:attribute>
+              </rx:index-item>
+            </xsl:if>
+            <xsl:if test="$refs[not(@significance) or @significance!='preferred'][not(see) and not(seealso)]">
+              <rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
+                <xsl:attribute name="ref-key">
+                  <xsl:value-of select="$primary"/>
+                  <xsl:text>, </xsl:text>
+                  <xsl:value-of select="$secondary"/>
+                  <xsl:text>, </xsl:text>
+                  <xsl:value-of select="$tertiary"/>
+                </xsl:attribute>
+              </rx:index-item>
+            </xsl:if>
           </rx:page-index>
         </xsl:if>
       </xsl:when>
diff --git a/xsl/fo/index.xsl b/xsl/fo/index.xsl
index d57e67410..494f63f29 100644
--- a/xsl/fo/index.xsl
+++ b/xsl/fo/index.xsl
@@ -256,6 +256,9 @@
 
 <!-- ==================================================================== -->
 
+<!-- Text used for distiguishing between normal and significant entries -->
+<xsl:variable name="significant.flag">.tnacifingis</xsl:variable>
+
 <xsl:template match="indexterm" name="indexterm">
   <!-- Temporal workaround for bug in AXF -->
   <xsl:variable name="wrapper.name">
@@ -273,6 +276,7 @@
       <xsl:when test="$xep.extensions != 0">
         <xsl:attribute name="rx:key">
           <xsl:value-of select="primary"/>
+          <xsl:if test="@significance='preferred'"><xsl:value-of select="$significant.flag"/></xsl:if>
           <xsl:if test="secondary">
             <xsl:text>, </xsl:text>
             <xsl:value-of select="secondary"/>
@@ -313,6 +317,7 @@
         </xsl:attribute>
         <xsl:attribute name="rx:key">
           <xsl:value-of select="primary"/>
+          <xsl:if test="@significance='preferred'"><xsl:value-of select="$significant.flag"/></xsl:if>
           <xsl:if test="secondary">
             <xsl:text>, </xsl:text>
             <xsl:value-of select="secondary"/>
diff --git a/xsl/fo/param.ent b/xsl/fo/param.ent
index 5bf5edb61..d8d48ebc2 100644
--- a/xsl/fo/param.ent
+++ b/xsl/fo/param.ent
@@ -68,6 +68,7 @@
 <!ENTITY headers.on.blank.pages SYSTEM "../params/headers.on.blank.pages.xml">
 <!ENTITY hyphenate SYSTEM "../params/hyphenate.xml">
 <!ENTITY informal.object.properties SYSTEM "../params/informal.object.properties.xml">
+<!ENTITY index.preferred.page.properties SYSTEM "../params/index.preferred.page.properties.xml">
 <!ENTITY insert.xref.page.number SYSTEM "../params/insert.xref.page.number.xml">
 <!ENTITY label.from.part SYSTEM "../params/label.from.part.xml">
 <!ENTITY line-height SYSTEM "../params/line-height.xml">
diff --git a/xsl/fo/param.xweb b/xsl/fo/param.xweb
index e11997348..eb1db1253 100644
--- a/xsl/fo/param.xweb
+++ b/xsl/fo/param.xweb
@@ -89,6 +89,7 @@ to be incomplete. Don't forget to read the source, too :-)</para>
 &generate.toc;
 &generate.index;
 &make.index.markup;
+&index.preferred.page.properties;
 &xep.index.item.properties;
 &toc.section.depth;
 &toc.indent.width;
@@ -563,6 +564,7 @@ around all these parameters.</para>
 <src:fragref linkend="hyphenate.frag"/>
 <src:fragref linkend="ignore.image.scaling.frag"/>
 <src:fragref linkend="informal.object.properties.frag"/>
+<src:fragref linkend="index.preferred.page.properties.frag"/>
 <src:fragref linkend="insert.xref.page.number.frag"/>
 <src:fragref linkend="l10n.gentext.default.language.frag"/>
 <src:fragref linkend="l10n.gentext.language.frag"/>
diff --git a/xsl/params/index.preferred.page.properties.xml b/xsl/params/index.preferred.page.properties.xml
new file mode 100755
index 000000000..1a5c8426a
--- /dev/null
+++ b/xsl/params/index.preferred.page.properties.xml
@@ -0,0 +1,25 @@
+<refentry id="index.preferred.page.properties">
+<refnamediv>
+<refname>index.preferred.page.properties</refname>
+<refpurpose>Properties used to emphasize page number references for
+significant index terms</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment id='index.preferred.page.properties.frag'>
+<xsl:attribute-set name="index.preferred.page.properties">
+  <xsl:attribute name="font-weight">bold</xsl:attribute>
+</xsl:attribute-set>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsect1><title>Description</title>
+
+<para>Properties used to emphasize page number references for
+significant index terms (<sgmltag
+class="attribute">significance</sgmltag>=<sgmltag
+class="attvalue">preffered</sgmltag>). Currently works only with
+XEP.</para>
+
+</refsect1>
+</refentry>
-- 
2.40.0