Add a search element to nav courtesy of Tim A.

This is MAVEN-554 with a fix


git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@113610 13f79535-47bb-0310-9956-ffa450edef68

xdoc/src/plugin-resources/site.jsl

@@ -163,7 +163,7 @@
                 </j:if>
 
                 <x:if select="$nav">
-                  <jsl:applyTemplates select="$nav/body/menu[not(@type) | @type='header']"/>
+                  <jsl:applyTemplates select="$nav/body/menu[not(@type) | @type='header'] | $nav/body/search"/>
                 </x:if>
                 
                 <!-- Standard Maven Navigation -->
@@ -414,6 +414,32 @@
     </x:forEach>
   </jsl:template>
 
+  <!-- Google site search -->
+  <jsl:template match="search" trim="false">
+    <!-- Search code: http://www.google.com/searchcode.html -->
+    <!-- Google logos: http://www.google.com/stickers.html -->
+    <!-- Terms: http://www.google.com./services/terms_free.html -->
+    <div>
+      <strong>Search ${pom.name}</strong>
+      <form method="get" action="http://www.google.com/search">
+        <a class="navlink" href="http://www.google.com">
+          <img src="http://www.google.com/logos/Logo_25wht.gif" 
+               alt="Google" border="0" />
+        </a><p/>
+        <j:set var="siteURL" value="${pom.url}"/>
+        <!-- google fails on urls that end with / -->
+        <j:if test="${siteURL.endsWith('/')}">
+          <j:set var="URLLength" value="${siteURL.length() - 1}"/>
+          <j:set var="siteURL" value="${siteURL.substring(0, URLLength.intValue())}"/>
+        </j:if>
+        <input type="text" size="15" name="q" maxlength="255" value=""/>
+        <input type="submit" value="Go" name="btnG"/>
+        <input type="hidden" name="domains" value="${siteURL}"/>
+        <input type="hidden" id="search" name="sitesearch" value="${siteURL}"/>
+      </form>
+    </div>
+  </jsl:template>
+
   <!-- process a documentation section -->
   <jsl:template match="section" trim="false">
     <div class="h3">

xdoc/xdocs/index.xml

@@ -43,6 +43,10 @@
     </A>
    </footer>
       ]]></source>
+      <p>
+        If a <code>search</code> element is found in the <code>navigation.xml</code> body, a search navigation
+        menu is generated that uses <a href="http://www.google.com">google</a>
+      </p>
       <p>
         In addition to xdocs, users may wish to include other types of
         files such as images, their own HTML files, PDFs, etc.  By