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sclass Tab {
  S name;
}

compact module Tabs {

  L<Tab> tabs = notifyingList(r { dm_q(r updateTabs) });
  transient JTabbedPane jtabs;
  
  visualize {
    jtabs = jtabs();
    updateTabs();
    ret withLeftAlignedButtonsAbove("+", rThread { inputText("Name for new tab", voidfunc(S s) { addTab(s) }) }, 
      jtabs);
  }
  
  void updateTabs {
    if (jtabs == null) ret;
    
    fillJTabs(jtabs, collect name(tabs));
  }
  
  // API
  
  void addTab(S name) {
    tabs.add(nu(Tab, name));
  }
}