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!7

compact module ListMethodsOfActiveModule > DynTextArea {
  transient O module;
  transient JButton btnCall;
  
  void start {
    dm_updateMeOnNewActiveModule();
  }
  
  S methodToCall() {
    S s = trim(lineAtCaret(textArea)), m;
    ret endsWith(s, "!") && isIdentifier(m = dropLast(s)) ? m : null;
  }
  
  JComponent visualize() {
    JComponent c = super.visualize();
    onCaretAndNow(textArea, r {
      S m = methodToCall();
      setEnabledAndText(btnCall, m != null, m != null ? "Call method " + singleQuote(m) : "Move cursor to call a method");
    });
    ret centerAndSouth(c,
      withMargin(jcenteredline(btnCall = jbutton("Call method", r-thread {
        S m = methodToCall();
        if (m != null) {
          print("Calling method " + m + " on " + module);
          call(module, m);
        }
      }))));
  }
  
  void update {
    O _m = dm_activeModule();
    if ((_m != this || module == null) && setField(module := _m)) {
      setText("Active Module: " + dm_moduleName(module) + "\n");
      new StringBuilder buf;
      L<Method> l = allLiveMethods_skipOverridden_sortByNameWithinClass(module);
      new L<S> lines;
      Class c = null;
      for (Method m : l) {
        if (m.getDeclaringClass() != c) {
          c = m.getDeclaringClass();
          lines.add("\nclass " + shortClassName(c) + "\n");
        }
        Class<?>[] args = m.getParameterTypes();
        Class<?> returns = m.getReturnType();
        lines.add("  " + m.getName() +
          (typeIsVoid(returns) && empty(args) ? "!"
          : trim(": " + joinWithComma(shortClassNames(args))) + " -> " + shortClassName(returns));
      }
      setText(getText() + lines(lines));
    }
  }
}