/** Returns the next available session name in the series untitled1.tet, untitled2.tet, etc. */
  private String getNewSessionName() {
    String base = "untitled";
    String suffix = ".tet";
    int i = 0; // Sequence 1, 2, 3, ...

    loop:
    while (true) {
      i++;

      String name = base + i + suffix;

      for (Object _o : framesMap.keySet()) {
        if (_o instanceof SessionEditor) {
          SessionEditor sessionEditor = (SessionEditor) _o;
          SessionEditorWorkbench workbench = sessionEditor.getSessionWorkbench();
          SessionWrapper sessionWrapper = workbench.getSessionWrapper();

          if (sessionWrapper.getName().equals(name)) {
            continue loop;
          }
        }
      }

      return name;
    }
  }
  public void closeFrontmostSession() {
    JInternalFrame[] frames = desktopPane.getAllFramesInLayer(0);

    if (frames.length > 0) {
      frames[0].dispose();
      Map<SessionEditor, JInternalFrame> framesMap = this.framesMap;
      for (Iterator<SessionEditor> i = framesMap.keySet().iterator(); i.hasNext(); ) {
        SessionEditor key = i.next();
        JInternalFrame value = framesMap.get(key);
        if (value == frames[0]) {
          i.remove();
          break;
        }
      }
    }
  }