private void updateSelection(AnActionEvent e) {
      if (myVcs == null) return;

      VirtualFile vf = e.getData(CommonDataKeys.VIRTUAL_FILE);
      if (vf == null) return;

      File f = virtualToIoFile(vf);
      if (!filesEqual(f, myFile)) {
        setFile(myVcs, f);

        ToolWindow toolWindow = ToolWindowManager.getInstance(myVcs.getProject()).getToolWindow(ID);
        if (toolWindow != null) toolWindow.setTitle(f.getName());
      }
    }
private void updateSelection(AnActionEvent e)