public void mouseClicked(MouseEvent e) {
    if (e.getButton() == MouseEvent.BUTTON1 && e.getSource() instanceof MainView) {
      MainView view = (MainView) e.getSource();
      Rectangle bounds = ((ZoomableLabelUI) view.getUI()).getIconR(view);
      Point p = e.getPoint();
      if (bounds.contains(p)) {
        if (view.getIcon() instanceof MultipleImage) {
          Rectangle iconR =
              ((MultipleImage) view.getIcon())
                  .getIconR(PdfUtilitiesController.REFRESH_MONITORING_ICON);
          if (iconR != null) {
            float zoom = Controller.getCurrentController().getViewController().getZoom();
            iconR.setLocation((int) (iconR.x * zoom), iconR.y);
            iconR.setSize((int) (iconR.width * zoom), (int) (iconR.height * zoom));
            iconR.translate(bounds.x, bounds.y);
            if (iconR.contains(p)) {
              UpdateMonitoringFolderAction.updateNodesAgainstMonitoringDir(
                  getMonitorNodes(
                      Controller.getCurrentController().getViewController().getMap().getRootNode()),
                  false);
              return;
            }
          }
        }
      }
      //			StringBuilder sb = new StringBuilder();
      //			pdfHeaderExtraction(e, sb);
    }
    boolean openOnPage =
        ResourceController.getResourceController()
            .getBooleanProperty(PdfUtilitiesController.OPEN_PDF_VIEWER_ON_PAGE_KEY);

    if (!openOnPage) {
      this.mouseListener.mouseClicked(e);
      return;
    }

    if (
    /*wasFocused() && */ (e.getModifiers() & ~(InputEvent.ALT_DOWN_MASK | InputEvent.ALT_MASK))
        == InputEvent.BUTTON1_MASK) {
      final MainView component = (MainView) e.getComponent();
      final ModeController modeController = Controller.getCurrentModeController();
      NodeModel node = null;
      try {
        node = ((MainView) e.getSource()).getNodeView().getModel();
      } catch (Exception ex) {
      }

      if (node == null) {
        node = modeController.getMapController().getSelectedNode();
      }

      if (component.isInFollowLinkRegion(e.getX())) {
        writeToLog(node);
      }
      if (!component.isInFollowLinkRegion(e.getX()) || !MonitoringUtils.isPdfLinkedNode(node)) {
        this.mouseListener.mouseClicked(e);
        return;
      }

      URI uri = Tools.getAbsoluteUri(node);
      if (uri == null) {
        this.mouseListener.mouseClicked(e);
        return;
      }

      IAnnotation annotation = null;
      try {
        annotation = node.getExtension(AnnotationModel.class);
      } catch (Exception ex) {
      }

      LinkController.getController().onDeselect(node);
      if (!PdfUtilitiesController.getController().openPdfOnPage(uri, annotation)) {
        this.mouseListener.mouseClicked(e);
        return;
      }
      LinkController.getController().onSelect(node);

    } else {
      this.mouseListener.mouseClicked(e);
    }
  }
 public static DocearNodeModifiedExtension getExtension(final NodeModel node) {
   DocearNodeModifiedExtension docearNodeModel =
       (DocearNodeModifiedExtension) node.getExtension(DocearNodeModifiedExtension.class);
   return docearNodeModel;
 }