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abstract sclass CollectIOExamples > DynModule {
  new L<Example> examples;
  transient JList examplesList;
  
  srecord Example(S question, S answer) { toString { ret question + " -> " + answer; } }
  
  JComponent visualize() {
    ret withCenteredButtons(listPopupMenuThreaded(examplesList = jLiveValueList(dm_fieldLiveValue('examples)), "Delete Example", voidfunc(S row) {
      temp enter(); setField(examples := listMinusToString(examples, row))
    }), buttons());
  }
  
  O[] buttons() {
    ret litobjectarray("Add example...", rThread addExampleDialog);
  }
  
  void addExampleDialog {
    final JTextField tfQuestion = jtextfield(), tfAnswer = jtextfield("?");
    showFormTitled("Add example", "Question:", tfQuestion, "Answer (if known):", tfAnswer, r {
      temp enter(); setField(examples := listPlus(examples, new Example(gtt(tfQuestion), gtt(tfAnswer))));
    });
  }
}