Bug 127746 [build path] Build Path action "no actions available" should be disabled
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/newsourcepage/GenerateBuildPathActionGroup.java
* {@inheritDoc}
		 */
		public boolean selectionChanged(IStructuredSelection selection) {
			if (selection.size() == 1 && selection.getFirstElement() instanceof IJavaProject) {
				fSelectedProject= (IJavaProject)selection.getFirstElement();
				return true;
			}
			return false;
		}
		
		public List getCPListElements() {
			return fAddSourceFolderWizard.getExistingEntries();
		}
    }
    
    public static class EditFilterAction extends OpenBuildPathWizardAction {
    	
    	private IJavaProject fSelectedProject;
    	private IJavaElement fSelectedElement;
		private EditFilterWizard fEditFilterWizard;
    	
		public EditFilterAction() {
    		setText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Edit_label); 
    		setDescription(NewWizardMessages.PackageExplorerActionGroup_FormText_Edit);
    		setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Edit_tooltip); 
    		setImageDescriptor(JavaPluginImages.DESC_ELCL_CONFIGURE_BUILDPATH_FILTERS);
    		setDisabledImageDescriptor(JavaPluginImages.DESC_DLCL_CONFIGURE_BUILDPATH_FILTERS);
    	}
		/**
		 * {@inheritDoc}