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!7

set flag DynModule. // for transpilation

sclass JavaEval extends DynPrintLog {
  S expression;
  bool realEval = true;
  transient bool calculating;
  transient O value;
  transient JTextArea taInput;
  transient Throwable error;
  
  visualize {
    ret withMargin(jvsplit(
      centerAndEastWithMarginInbetween(
        onCtrlEnter(taInput = jEnableUndoRedo(typeWriterTextArea(expression)), rThread evalIt),
        vstackWithSpacing(
          fontSizePlus(4, makeBold(toolTip("Evaluate the code", jbutton("EVAL", rThread evalIt)))),
          toolTip("Evaluate in latest language version", jbutton("Fresh", rThread { refresh(); evalIt() })),
          withToolTip("Use the real Java compiler, don't use shortcuts - just leave checked if in doubt", dm_fieldCheckBox("Real", 'realEval)))),
      super.visualize()));
  }
  
  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);
  }
}