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!7

set flag DynModule. // for transpilation

sclass JavaEval extends DynPrintLog {
  S expression;
  bool realEval;
  transient bool calculating;
  transient O value;
  transient JTextArea taInput;
  transient Throwable error;
  transient JPanel babiesPanel;

  start {
    loadImage2(#1101447);
    makeDependent_postProcess(r updateBabySymbols);
    dm_vmBus_onMessage('gcDone, r updateBabySymbols);
  }

  visualize {
    ret centerAndEastWithMargins(
      jvsplit( 
        centerAndEastWithMarginInbetween(
          onCtrlEnter(taInput = jEnableUndoRedo(typeWriterTextArea(expression)), rThread evalIt),
          vstackWithSpacing(
            jbutton("Fresh", rThread { refresh(); evalIt() }),
            jbutton("Eval", rThread evalIt),
            withToolTip("Don't interpret", dm_fieldCheckBox("Real", 'realEval)))),
        super.visualize()),
        babiesPanel = jpanel());
  }
  
  void refresh {
    call(dm_transpiler(), 'refresh);
    loadFunctions_clearCache();
    print("Refreshed translator.");
  }
  
  void evalIt {
    if (calculating) ret;
    calculating = true;
    temp afterwards(r { calculating = false });
    dm_javaEvalModule_doIt(gtt(taInput), realEval);
  }
  
  void updateBabySymbols enter {
    dm_q().add(r {
      int n = l(dependentClasses());
      final BufferedImage img = scaleImageToWidth(loadImage(loadImage2(#1101447), 24));
      swing {
        removeAllComponents(babiesPanel);
        repeat n {
          babiesPanel.add(jimage(img));
        }
        validate(babiesPanel);
      }
    });
  }
}