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!7

sclass TextArea extends DynModule {
  S text;
  S globalID = aGlobalID();

  transient JTextArea ta;
  transient EditRecorder recorder;
  transient ReliableSingleThread rstPersistText = rstWithDelay(1000, r persistText);
  
  // We have auto-save of deleted modules
  //bool warnOnDelete() { ret nempty(text); }
  
  File logFile() { ret javaxDataDir("Text Area Logs/" + globalID); }
  
  JComponent visualize() {
    ta = jenableUndoRedo(typeWriterTextArea(text));
    logQuoted(logFile(), "text: " + text);
    recorder = new EditRecorder(voidfunc(EREvent e) {
      logStructure(logFile(), e);
    });
    recorder.text = text;
    main.onChange(ta, rstPersistText);
    ret jscroll(setOpaqueBackground(Color.white, withMargin(ta)));
  }
  
  void persistText {
    temp enter();
    if (ta != null) {
      Pair<S, Int> p = textAndCaretPosition(ta);
      recorder.update(p.a);
      recorder.updateCaret(p.b);
      print("persistText " + now());
      setField(text := getText(ta));
    }
  }
  
  void unvisualize() {
    persistText();
    super.unvisualize();
  }
  
  void setText(S text) { main.setText(ta, text); }
  S text() { ret or(main.getText(ta), text); }
  
  S _structForDuplication() {
    // TODO: could fail if more module is more complex
    ret jreplace(dm_struct(this), "globalID=*", "globalID=" + quote(aGlobalID()));
  }
}