gistfile1.txt

  public void run(IAction action) {    
    IFile file;

    // If I am in the POM editor I want to get hold of the IFile that is currently
    // in the buffer
    
    IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    
    if ( window != null ) 
    {        
        IWorkbenchPage page = window.getActivePage();
        if ( page != null ) 
        {
          IEditorPart editor = page.getActiveEditor();           
          if ( editor != null ) 
          {
              IEditorInput input = editor.getEditorInput();
              if ( input instanceof IFileEditorInput ) 
              {
                  IFileEditorInput fileInput = (IFileEditorInput) input;
                  file = fileInput.getFile();
              }
           }
        }                  
    }