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sclass G22LAScriptIDE<A extends G22LAScript> {
  settable G22Utils g22utils;
  settable S noScriptSelectedMsg = "Please select or create a script to edit it";
  
  A script;
  
  transient SingleComponentPanel scp;
  transient JLeftArrowScriptIDE[] ides;
  transient JTabbedPane tabs;
  
  abstract class Mode {
    S name;
    gettable bool editable;
    
    *(S *name, bool *editable) {}
    
    abstract IVarWithNotify<S> scriptVar(A script);
    
    void addButtons(JPanel panel) {}
    
    toString { ret name; }
    
    S tabName(A script) { ret scriptVar().has() ? name : "Not " + firstToLower(name); }
  }
  
  class ModeClearedForAutoRun > Mode {
    *() { super("Cleared for auto-run", false); }
    
    IVarWithNotify<S> scriptVar(A script) {
      var var = new VirtualVar<S>(
        -> getVar(script.clearedForAutoRun()),
        null /*text -> script.setClearedForAutoRun(text == null ?: new ClearForAutoRun(text))*/);
      addWeakChangeListener(script.varClearedForAutoRun(), var);
      ret var;
    }
    
    toString { ret name; }
  }
  
  class ModeSaved > Mode {
    *() { super("Saved", false); }
    
    IVarWithNotify<S> scriptVar(A script) {
      ret getterVarOnly(script.varText());
    }
    
    void addButtons(JPanel panel) {
      panel.add(jbutton("Forget code", rThread forgetSaved));
    }
  }
  
  class ModeEdit > Mode {
    *() { super("Editing", true); }
    
    IVarWithNotify<S> scriptVar(A script) {
      var var = new VirtualVar<S>(
        -> script.textForEditing(),
        text -> script.editingText(text)
      );
      addWeakChangeListener(script.varEditingText(), var);
      ret var;
    }
    
    void addButtons(JPanel panel) {
      panel.add(jbutton("Save", rThread saveEdit));
      panel.add(jbutton("Discard changes", rThread discardEdit));
    }
  }
  
  transient new ModeSaved modeSaved;
  transient L<Mode> modes = ll(
    new ModeEdit,
    modeSaved,
    new ModeClearedForAutoRun
  );
  
  *(G22Utils *g22utils) {}
  
  visualize {
    ides = new JLeftArrowScriptIDE[l(modes)];
    if (scp == null) scp = singleComponentPanel();
    loadScript(script);
    ret scp;
  }
  
  void setScript(A script) {
    if (this.script != script)
      loadScript(script);
  }
  
  void loadScript(A script) {
    this.script = script;
    if (scp == null) ret;
    if (script == null)
      scp.set(jcenteredlabel(noScriptSelectedMsg()));
    else {
      tabs = jtabs();
      for (int i, Mode mode : unpair iterateWithIndex(modes)) {
        var ide = ides[i] = g22utils.leftArrowIDE();
        modifyIDE(ide);
        var varScript = mode.scriptVar(script);
        ide.lvScript(varWithNotifyToLiveValue(S.class, varScript));
        addTab(tabs, str(mode));
        ide.visualize();
        JPanel moreButtons = jline();
        mode.addButtons(moreButtons);
        ide.scpMoreButtons.set(moreButtons);
        ide.setEditable(mode.editable());
        varScript.onChangeAndNow(text ->
          setTab(tabs, i, text == null ? jcenteredlabel("Empty") : wrapIDE(ide));
      }
      script.onChange(r {
        for (int i, Mode mode : unpair iterateWithIndex(modes))
          setTabTitle(tabs, i, mode.tabName(script));
      });
      scp.set(tabs);
    }
  }
  
  swappable JComponent wrapIDE(JLeftArrowScriptIDE ide) {
    ret ide.visualize();
  }
  
  event settingUpIDE(JLeftArrowScriptIDE ide);
  
  swappable void modifyIDE(JLeftArrowScriptIDE ide) {
    ide.showTitle(false);
    settingUpIDE(ide);
  }
  
  void saveEdit {
    script.completeEdit();
  }
  
  void setMode(Mode mode) {
    selectTab(tabs, indexOf(modes, mode));
  }
  
  void discardEdit {
    setMode(modeSaved);
    script.editingText(null);
  }
  
  void forgetSaved {
    script.setTextWithHistory(null);
  }
}