only display config sections for those descriptors that need it.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@2042 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/maven/MavenReporterDescriptor.java

 package hudson.maven;
 
-import hudson.model.Descriptor;
 import hudson.maven.reporters.MavenArtifactArchiver;
+import hudson.model.Descriptor;
+import org.apache.commons.jelly.JellyException;
+import org.kohsuke.stapler.MetaClass;
+import org.kohsuke.stapler.jelly.JellyClassTearOff;
 
 /**
  * {@link Descriptor} for {@link MavenReporter}.
@@ -32,4 +35,17 @@ public abstract class MavenReporterDescriptor extends Descriptor<MavenReporter>
     public MavenReporter newAutoInstance(MavenModule module) {
         return null;
     }
+
+    /**
+     * Returns true if this descriptor has <tt>config.jelly</tt>.
+     */
+    public final boolean hasConfigScreen() {
+        MetaClass c = MetaClass.get(getClass());
+        try {
+            JellyClassTearOff tearOff = c.loadTearOff(JellyClassTearOff.class);
+            return tearOff.findScript(getConfigPage())!=null;
+        } catch(JellyException e) {
+            return false;
+        }
+    }
 }

core/src/main/java/hudson/maven/MavenReporters.java

@@ -5,6 +5,7 @@ import hudson.maven.reporters.MavenArtifactArchiver;
 import hudson.maven.reporters.MavenFingerprinter;
 
 import java.util.List;
+import java.util.ArrayList;
 
 /**
  * @author Kohsuke Kawaguchi
@@ -18,4 +19,16 @@ public final class MavenReporters {
         MavenArtifactArchiver.DescriptorImpl.DESCRIPTOR,
         MavenFingerprinter.DescriptorImpl.DESCRIPTOR
     );
+
+    /**
+     * Gets the subset of {@link #LIST} that has configuration screen.
+     */
+    public static List<MavenReporterDescriptor> getConfigurableList() {
+        List<MavenReporterDescriptor> r = new ArrayList<MavenReporterDescriptor>();
+        for (MavenReporterDescriptor d : LIST) {
+            if(d.hasConfigScreen())
+                r.add(d);
+        }
+        return r;
+    }
 }

core/src/main/resources/hudson/maven/MavenModule/configure-entries.jelly

@@ -32,9 +32,11 @@
     </f:entry>
   </f:section>
 
-  <j:getStatic var="reporters" className="hudson.maven.MavenReporters" field="LIST" />
-  <f:descriptorList title="Build Settings"
-                    descriptors="${reporters}"
-                    instances="${it.reporters.toMap()}"
-                    varName="reporter" />
+  <j:invokeStatic var="reporters" className="hudson.maven.MavenReporters" method="getConfigurableList" />
+  <j:if test="${!empty(reporters)}">
+    <f:descriptorList title="Build Settings"
+                      descriptors="${reporters}"
+                      instances="${it.reporters.toMap()}"
+                      varName="reporter" />
+  </j:if>
 </j:jelly>
\ No newline at end of file