plugins/org.eclipse.dltk.javascript.jdt.integration.ui/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.ui.popupMenus">
      <objectContribution
            adaptable="true"
            id="org.eclipse.dltk.javascript.jdt.integration.objectContribution2"
            objectClass="org.eclipse.core.resources.IProject">
         <action
               class="org.eclipse.dltk.javascript.jdt.integration.ui.AddJsNatureAction"
               enablesFor="1"
               icon="icons/javascript.gif"
               id="org.eclipse.dltk.javascript.jdt.integration.action2"
               label="Add JavaScript Nature"
               menubarPath="org.eclipse.ui.projectConfigure/additions"
               style="push">
         </action>
         <visibility>
         	<and>
         		<objectState
                  name="nature"
                  value="org.eclipse.jdt.core.javanature">
            	</objectState>
				<not>
				<objectState
                  name="nature"
                  value="org.eclipse.dltk.javascript.core.nature">
            	</objectState>
				</not>            			
         	</and>
         </visibility>            
      </objectContribution>
   </extension>
   <extension point="org.eclipse.dltk.ui.openDelegate">
      <delegate class="org.eclipse.dltk.javascript.jdt.integration.ui.JavaEditorAdapter">
      </delegate>
   </extension>
</plugin>