# HG changeset patch
# User paulb
# Date 1115426709 0
# Node ID 7dd59143b25aff2689d637d65179d29924dc0400
# Parent  a3f0c9b95ce3fe1cd69ccfed43a3ca4c575f8218
[project @ 2005-05-07 00:45:09 by paulb]
Changed the database so that certain control fields can affect the exposed
values for other fields.

diff -r a3f0c9b95ce3 -r 7dd59143b25a examples/Common/Configurator/Resources/config_database.xml
--- a/examples/Common/Configurator/Resources/config_database.xml	Fri May 06 19:13:50 2005 +0000
+++ b/examples/Common/Configurator/Resources/config_database.xml	Sat May 07 00:45:09 2005 +0000
@@ -2,13 +2,15 @@
 <database>
   <base-system>
     <base-system-enum value="(Not selected)" price="0"/>
-    <base-system-enum value="Shuttle SB61G2V3" price="2174"/>
-    <base-system-enum value="Shuttle SB65G2" price="2700"/>
+    <base-system-enum value="Shuttle SB61G2V3" price="2174" cpu-socket="478"/>
+    <base-system-enum value="Shuttle SB65G2" price="2700" cpu-socket="478"/>
+    <base-system-enum value="Soltek Qbic EQ3901" price="2500" cpu-socket="939"/>
   </base-system>
   <cpu>
     <cpu-enum value="(Not selected)" price="0"/>
-    <cpu-enum value="Pentium 4 3.0 GHz" price="1650"/>
-    <cpu-enum value="Athlon 3000+" price="1500"/>
+    <cpu-enum value="Pentium 4 3.0 GHz" price="1650" cpu-socket="478"/>
+    <cpu-enum value="Athlon 3000+" price="1500" cpu-socket="A"/>
+    <cpu-enum value="Athlon 64 3500+" price="2300" cpu-socket="939"/>
   </cpu>
   <memory-unit>
     <memory-unit-enum value="(Not selected)" price="0"/>
diff -r a3f0c9b95ce3 -r 7dd59143b25a examples/Common/Configurator/Resources/config_database.xsl
--- a/examples/Common/Configurator/Resources/config_database.xsl	Fri May 06 19:13:50 2005 +0000
+++ b/examples/Common/Configurator/Resources/config_database.xsl	Sat May 07 00:45:09 2005 +0000
@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:template="http://www.boddie.org.uk/ns/xmltools/template"
+                xmlns:dyn="http://exslt.org/dynamic"
+                extension-element-prefixes="dyn"
                 version="1.0">
 
   <xsl:param name="database"/>
@@ -11,18 +13,21 @@
       <!-- Complete all multiple choice fields. -->
       <details>
         <xsl:call-template name="complete-element">
-          <xsl:with-param name="found-elements" select="details/base-system"/>
+          <xsl:with-param name="found-element" select="details/base-system[1]"/>
           <xsl:with-param name="element-name">base-system</xsl:with-param>
         </xsl:call-template>
         <xsl:call-template name="complete-element">
-          <xsl:with-param name="found-elements" select="details/cpu"/>
+          <xsl:with-param name="found-element" select="details/cpu[1]"/>
+          <xsl:with-param name="control-element" select="details/base-system[1]"/>
           <xsl:with-param name="element-name">cpu</xsl:with-param>
+          <xsl:with-param name="control-element-name">base-system</xsl:with-param>
+          <xsl:with-param name="control-attribute-name">cpu-socket</xsl:with-param>
         </xsl:call-template>
       </details>
       <memory>
         <xsl:for-each select="memory/memory-unit">
           <xsl:call-template name="complete-element">
-            <xsl:with-param name="found-elements" select="."/>
+            <xsl:with-param name="found-element" select="."/>
             <xsl:with-param name="element-name">memory-unit</xsl:with-param>
           </xsl:call-template>
         </xsl:for-each>
@@ -30,7 +35,7 @@
       <hard-disks>
         <xsl:for-each select="hard-disks/hard-disk">
           <xsl:call-template name="complete-element">
-            <xsl:with-param name="found-elements" select="."/>
+            <xsl:with-param name="found-element" select="."/>
             <xsl:with-param name="element-name">hard-disk</xsl:with-param>
           </xsl:call-template>
         </xsl:for-each>
@@ -38,22 +43,22 @@
       <storage>
         <xsl:for-each select="storage/storage-unit">
           <xsl:call-template name="complete-element">
-            <xsl:with-param name="found-elements" select="."/>
+            <xsl:with-param name="found-element" select="."/>
             <xsl:with-param name="element-name">storage-unit</xsl:with-param>
           </xsl:call-template>
         </xsl:for-each>
       </storage>
       <peripherals>
         <xsl:call-template name="complete-element">
-          <xsl:with-param name="found-elements" select="peripherals/keyboard"/>
+          <xsl:with-param name="found-element" select="peripherals/keyboard[1]"/>
           <xsl:with-param name="element-name">keyboard</xsl:with-param>
         </xsl:call-template>
         <xsl:call-template name="complete-element">
-          <xsl:with-param name="found-elements" select="peripherals/mouse"/>
+          <xsl:with-param name="found-element" select="peripherals/mouse[1]"/>
           <xsl:with-param name="element-name">mouse</xsl:with-param>
         </xsl:call-template>
         <xsl:call-template name="complete-element">
-          <xsl:with-param name="found-elements" select="peripherals/screen"/>
+          <xsl:with-param name="found-element" select="peripherals/screen[1]"/>
           <xsl:with-param name="element-name">screen</xsl:with-param>
         </xsl:call-template>
       </peripherals>
@@ -61,34 +66,60 @@
   </xsl:template>
 
   <xsl:template name="complete-element">
-    <xsl:param name="found-elements"/>
+    <!-- Input parameters. -->
+    <xsl:param name="found-element"/>
+    <xsl:param name="control-element"/>
+    <!-- Database parameters. -->
     <xsl:param name="element-name"/>
+    <xsl:param name="control-element-name"/>
+    <xsl:param name="control-attribute-name"/>
+    <!-- Find the database entries. -->
     <xsl:variable name="element-enum-name"><xsl:value-of select="$element-name"/>-enum</xsl:variable>
-    <xsl:variable name="has-set-values" select="$found-elements[@value]"/>
+    <xsl:variable name="control-element-enum-name"><xsl:value-of select="$control-element-name"/>-enum</xsl:variable>
+    <!-- Find whether the input values are set. -->
+    <xsl:variable name="has-set-values" select="$found-element[@value]"/>
+    <xsl:variable name="has-control-values" select="$control-element and $control-element[@value]"/>
+    <!-- Get the database element for the element being prepared. -->
+    <xsl:variable name="database-element" select="$database/database/*[local-name() = $element-name]"/>
+    <!-- Get the database element for the control element. -->
+    <xsl:variable name="database-control-element" select="$database/database/*[local-name() = $control-element-name]"/>
+    <!-- Get the database entries for the control element. -->
+    <xsl:variable name="control-enum-elements" select="$database-control-element/*[local-name() = $control-element-enum-name]"/>
+    <!-- Get the database entry for the control element, then get the control attribute value in that entry. -->
+    <xsl:variable name="other-control-value" select="$control-enum-elements[@value = $control-element/@value]/@*[local-name() = $control-attribute-name]"/>
     <!-- Make the element with the different values. -->
     <xsl:element name="{$element-name}">
-      <!-- Find the values in the database. -->
-      <xsl:for-each select="$database/database/*[local-name() = $element-name]/*[local-name() = $element-enum-name]">
+      <!-- Find the entries in the database for the element being prepared. -->
+      <xsl:for-each select="$database-element/*[local-name() = $element-enum-name]">
+        <!-- Remember the current node for future comparisons. -->
         <xsl:variable name="enum-element" select="."/>
-        <!-- Copy each option. -->
-        <xsl:copy>
-          <!-- Only include the value, adding the price only if the item is selected. -->
-          <xsl:apply-templates select="@value"/>
-          <!-- Find whether this item is selected. -->
-          <xsl:choose>
-            <!-- In the current field, the value attribute matches this value. -->
-            <xsl:when test="$found-elements[@value = $enum-element/@value]">
-              <xsl:attribute name="value-is-set">true</xsl:attribute>
-              <xsl:apply-templates select="@price"/>
-            </xsl:when>
-            <!-- This value is the first and no value attribute is specified. -->
-            <xsl:when test="not($has-set-values) and count($enum-element/preceding-sibling::*) = 0">
-              <xsl:attribute name="value-is-set">true</xsl:attribute>
-              <xsl:apply-templates select="@price"/>
-            </xsl:when>
-            <xsl:otherwise/>
-          </xsl:choose>
-        </xsl:copy>
+        <!-- Find whether the current entry matches the input value. -->
+        <xsl:variable name="matching-element" select="$found-element[@value = $enum-element/@value]"/>
+        <!-- Get the control attribute value for the current entry. -->
+        <xsl:variable name="this-control-value" select="@*[local-name() = $control-attribute-name]"/>
+        <!-- Filter the entry out unless no control element was given, this entry has no control attribute value or...
+             if the control attribute value matches the one for the control element. -->
+        <xsl:if test="not($has-control-values) or not($this-control-value) or $this-control-value = $other-control-value">
+          <!-- Copy the entry. -->
+          <xsl:copy>
+            <!-- Include all attributes except the price, adding the price only if the item is selected. -->
+            <xsl:apply-templates select="@*[local-name() != 'price']"/>
+            <!-- Find whether this item is selected. -->
+            <xsl:choose>
+              <!-- In the current field, the value attribute matches this value. -->
+              <xsl:when test="$matching-element">
+                <xsl:attribute name="value-is-set">true</xsl:attribute>
+                <xsl:apply-templates select="@price"/>
+              </xsl:when>
+              <!-- This value is the first and no value attribute is specified. -->
+              <xsl:when test="not($has-set-values) and count($enum-element/preceding-sibling::*) = 0">
+                <xsl:attribute name="value-is-set">true</xsl:attribute>
+                <xsl:apply-templates select="@price"/>
+              </xsl:when>
+              <xsl:otherwise/>
+            </xsl:choose>
+          </xsl:copy>
+        </xsl:if>
       </xsl:for-each>
     </xsl:element>
   </xsl:template>