public class CountElements implements IObjectActionDelegate
{
   private IFile xmlFile;

   public CountElements()
   {
      super();
   }

   public void setActivePart(IAction action, IWorkbenchPart targetPart)
   {
   }

   public void run(IAction action)
   {
      XMLElementCountWizard wizard = new XMLElementCountWizard(xmlFile);		
      WizardDialog dialog = new WizardDialog(XMLProcessing.getDefault().getWorkbench().getActiveWorkbenchWindow().getShell(),wizard);
      dialog.create();
      dialog.open();			
   }

   public void selectionChanged(IAction action, ISelection selection)
   {
      this.xmlFile = null;
      if (selection instanceof IStructuredSelection) {
	 IStructuredSelection structuredSelection = (IStructuredSelection) selection;
	 if (structuredSelection.size() == 1) {
	    Object selectedResource = structuredSelection.getFirstElement();
	    if (selectedResource instanceof IFile)
	       this.xmlFile = (IFile) selectedResource;
	 }
      }		
   }
   public IFile getXmlFile()
   {
      return xmlFile;
   }
}