plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>

   <extension
         id="org.apache.buildr.eclipse.buildrNature"
         name="Buildr Project Nature"
         point="org.eclipse.core.resources.natures">
      <runtime>
         <run
               class="org.apache.buildr.eclipse.BuildrNature">
         </run>
      </runtime>
   </extension>
   <extension
         point="org.eclipse.ui.commands">
      <category
            name="Buildr Project Nature commands"
            id="org.apache.buildr.eclipse.buildrNature.category">
      </category>
      <command
            name="Add/RemoveBuildr Project Nature"
            defaultHandler="org.apache.buildr.eclipse.AddRemoveBuildrNatureHandler"
            categoryId="org.apache.buildr.eclipse.buildrNature.category"
            id="org.apache.buildr.eclipse.addRemoveBuildrNature">
      </command>
   </extension>
   <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            locationURI="popup:org.eclipse.ui.projectConfigure?after=additions">
         <command
               commandId="org.apache.buildr.eclipse.addRemoveBuildrNature"
               icon="icons/buildr.png"
               label="Add Buildr Nature"
               style="push">
            <visibleWhen
                  checkEnabled="false">
               <with
                     variable="selection">
                  <count
                        value="1">
                  </count>
                  <iterate>
                     <adapt
                           type="org.eclipse.core.resources.IProject">
                           <not>
                        <test
                              value="org.apache.buildr.eclipse.buildrNature"
                              property="org.eclipse.core.resources.projectNature">
                        </test>
                        </not>
                     </adapt>
                  </iterate>
               </with>
            </visibleWhen>
         </command>
         <command
               commandId="org.apache.buildr.eclipse.addRemoveBuildrNature"
               icon="icons/buildr.png"
               label="Remove Buildr Nature"
               style="push">
            <visibleWhen
                  checkEnabled="false">
               <with
                     variable="selection">
                  <count
                        value="1">
                  </count>
                  <iterate>
                     <adapt
                           type="org.eclipse.core.resources.IProject">
                           <test
                                 value="org.apache.buildr.eclipse.buildrNature"
                                 property="org.eclipse.core.resources.projectNature">
                           </test>
                     </adapt>
                  </iterate>
               </with>
            </visibleWhen>
         </command>
      </menuContribution>
   </extension>
   <extension
         point="org.eclipse.ui.ide.projectNatureImages">
      <image
            icon="icons/buildr_8x8.gif"
            id="org.apache.buildr.eclipse.natureImage"
            natureId="org.apache.buildr.eclipse.buildrNature">
      </image>
   </extension>
   <extension point="org.eclipse.ui.decorators">
     <decorator
           adaptable="true"
           icon="icons/buildr_8x8.gif"
           id="org.apache.buildr.eclipse.buildrDecorator"
           label="Buildr Decorator"
           lightweight="true"
           location="TOP_LEFT"
           state="true">
       <enablement>
          <or>
            <objectState name="label" value="Buildr Dependencies"/>
          </or>
       </enablement>
     </decorator>
   </extension>
   <extension
         point="org.eclipse.jdt.core.classpathContainerInitializer">
      <classpathContainerInitializer
            class="org.apache.buildr.eclipse.BuildrClasspathContainerInitializer"
            id="org.apache.buildr.eclipse.BUILDR_CONTAINER">
      </classpathContainerInitializer>
   </extension>
</plugin>