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abstract sclass DynRecordingTextArea extends DynModule {
  S text;
  switchable S title;
  switchable bool wordWrap;
  S globalID = aGlobalID();

  transient JTextArea ta;
  transient EditRecorder recorder;
  transient ReliableSingleThread rstPersistText = rstWithDelay(1000, r persistText);
  transient JButton popDownButton;
  
  // We have auto-save of deleted modules
  //bool warnOnDelete() { ret nempty(text); }
  
  File logFile() { ret javaxDataDir("Text Area Logs/" + globalID); }
  
  start {
    dm_watchFieldAndNow title(r { setModuleName(title) });
    dm_watchField wordWrap(r {
      enableWordWrapForTextArea(ta, wordWrap);
      if (ta != null && wordWrap) dm_reloadModule();
    });
    
    
    dm_vmBus_onMessages_q(ll("modulePoppedOut", "modulePoppedIn"), (m, myFrame) -> {
      if (dm_isMe(m))
        adjustUIForPoppedOutWindow();
    });
  }
  
  visualize {
    ta = jenableUndoRedo(typeWriterTextArea(text));
    enableWordWrapForTextArea(ta, wordWrap);
    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 enter {
    if (ta == null) ret;
    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 _modifyStructForDuplication(S struct) {
    // TODO: could fail if module gets more complex
    ret jreplace_first(struct, "globalID=*", "globalID=" + quote(aGlobalID()));
  }
  
  enhanceFrame {
    internalFrameMenuItem(f, "Global ID: " + globalID, null);
  }
  
  void adjustUIForPoppedOutWindow swing {
    if ((popDownButton != null) != dm_moduleIsPoppedOut(me())) {
      if (popDownButton != null) {
        removeFromParent(getParent(popDownButton));
        popDownButton = null;
        ret;
      }
      
      Window window = cast getWindow(dm_vis());

      var popBackInButton = findButton(window, "Pop Back In");
      var parent = getParent(popBackInButton);
      print(+parent);
      
      removeFromParent(parent); // hide controls
      
      popDownButton = jPopDownButton_noText(
        "Pop Back In", r { dm_popInModule(me()) },
        jCheckBoxMenuItem("Always On Top", isAlwaysOnTop(window),
          rEnter dm_toggleAlwaysOnTop),
      );
      replaceComponent(ta, -> centerAndEastWithMargin(ta, vstackWithSpacing(popDownButton)));
    }
  }
}