[Archive-access-cvs] SF.net SVN: archive-access:[2688] trunk/archive-access/projects/nutchwax/ archive/src/nutch/src/web/jsp/search.xsl

[<bi...@us...>]

Revision: 2688
          http://archive-access.svn.sourceforge.net/archive-access/?rev=2688&view=rev
Author:   binzino
Date:     2009-03-03 20:34:38 +0000 (Tue, 03 Mar 2009)

Log Message:
-----------
Re-worked the page link generation to handle last-page and
paging-off-the-end.

Modified Paths:
--------------
    trunk/archive-access/projects/nutchwax/archive/src/nutch/src/web/jsp/search.xsl

Modified: trunk/archive-access/projects/nutchwax/archive/src/nutch/src/web/jsp/search.xsl
===================================================================
--- trunk/archive-access/projects/nutchwax/archive/src/nutch/src/web/jsp/search.xsl	2009-03-03 18:20:14 UTC (rev 2687)
+++ trunk/archive-access/projects/nutchwax/archive/src/nutch/src/web/jsp/search.xsl	2009-03-03 20:34:38 UTC (rev 2688)
@@ -192,37 +192,73 @@
 <xsl:template name="pageLinks">
   <xsl:param name="labelPrevious" />
   <xsl:param name="labelNext"     />
+  <xsl:variable name="startPage" select="floor(opensearch:startIndex   div opensearch:itemsPerPage) + 1" />
+  <xsl:variable name="lastPage"  select="floor(opensearch:totalResults div opensearch:itemsPerPage) + 1" />
   <!-- If we are on any page past the first, emit a "previous" link -->
-  <xsl:if test="(floor(opensearch:startIndex div opensearch:itemsPerPage) + 1) != 1">
+  <xsl:if test="$startPage != 1">
     <xsl:call-template name="pageLink">
-      <xsl:with-param name="pageNum"  select="floor(opensearch:startIndex div opensearch:itemsPerPage)" />
+      <xsl:with-param name="pageNum"  select="$startPage - 1" />
       <xsl:with-param name="linkText" select="$labelPrevious" />
     </xsl:call-template>
     <xsl:text> </xsl:text>
   </xsl:if>
   <!-- Now, emit numbered page links -->
   <xsl:choose>
-    <xsl:when test="(floor(opensearch:startIndex div opensearch:itemsPerPage) + 1) &lt; 11">
-      <xsl:call-template name="numberedPageLinks" >
-        <xsl:with-param name="begin"   select="1"  />
-        <xsl:with-param name="end"     select="21" />
-        <xsl:with-param name="current" select="floor(opensearch:startIndex div opensearch:itemsPerPage) + 1" />
-      </xsl:call-template>
+    <!-- We are on pages 1-10.  Emit links  -->
+    <xsl:when test="$startPage &lt; 11">
+      <xsl:choose>
+        <xsl:when test="$lastPage &lt; 21">
+          <xsl:call-template name="numberedPageLinks" >
+            <xsl:with-param name="begin"   select="1"  />
+            <xsl:with-param name="end"     select="$lastPage + 1" />
+            <xsl:with-param name="current" select="$startPage" />
+          </xsl:call-template>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:call-template name="numberedPageLinks" >
+            <xsl:with-param name="begin"   select="1"  />
+            <xsl:with-param name="end"     select="21" />
+            <xsl:with-param name="current" select="$startPage" />
+          </xsl:call-template>
+        </xsl:otherwise>
+      </xsl:choose>
     </xsl:when>
+    <!-- We are past page 10, but not to the last page yet.  Emit links for 10 pages before and 10 pages after -->
+    <xsl:when test="$startPage &lt; $lastPage">
+      <xsl:choose>
+        <xsl:when test="$lastPage &lt; ($startPage + 11)">
+          <xsl:call-template name="numberedPageLinks" >
+            <xsl:with-param name="begin"   select="$startPage - 10" />
+            <xsl:with-param name="end"     select="$lastPage  +  1" />
+            <xsl:with-param name="current" select="$startPage"      />
+          </xsl:call-template>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:call-template name="numberedPageLinks" >
+            <xsl:with-param name="begin"   select="$startPage - 10" />
+            <xsl:with-param name="end"     select="$startPage + 11" />
+            <xsl:with-param name="current" select="$startPage"      />
+          </xsl:call-template>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:when>
+    <!-- This covers the case where we are on (or past) the last page -->
     <xsl:otherwise>
       <xsl:call-template name="numberedPageLinks" >
-        <xsl:with-param name="begin"   select="floor(opensearch:startIndex div opensearch:itemsPerPage) + 1 - 10" />
-        <xsl:with-param name="end"     select="floor(opensearch:startIndex div opensearch:itemsPerPage) + 1 + 11" />
-        <xsl:with-param name="current" select="floor(opensearch:startIndex div opensearch:itemsPerPage) + 1" />
+        <xsl:with-param name="begin"   select="$startPage - 10" />
+        <xsl:with-param name="end"     select="$lastPage  + 1"  />
+        <xsl:with-param name="current" select="$startPage"      />
       </xsl:call-template>
     </xsl:otherwise>
   </xsl:choose>
   <!-- Lastly, emit a "next" link. -->
   <xsl:text> </xsl:text>
-  <xsl:call-template name="pageLink">
-    <xsl:with-param name="pageNum"  select="floor(opensearch:startIndex div opensearch:itemsPerPage) + 2" />
-    <xsl:with-param name="linkText" select="$labelNext" />
-  </xsl:call-template>
+  <xsl:if test="$startPage &lt; $lastPage">
+    <xsl:call-template name="pageLink">
+      <xsl:with-param name="pageNum"  select="$startPage + 1" />
+      <xsl:with-param name="linkText" select="$labelNext" />
+    </xsl:call-template>
+  </xsl:if>
 </xsl:template>
 
 <!-- Template to emit a list of numbered links to results pages. 


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