промежуточный. частичный рефакторинг с прицелом на библиотечную часть

src/Common_old/UI/Menus_2023/LanguagesSubmenu.java

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+package Common_old.UI.Menus_2023;
+import Common_old.Utils.Utils;
+import ProjectData.LanguageName;
+
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+public abstract class LanguagesSubmenu extends VisualiserMenu {
+    public LanguagesSubmenu() {
+        this("Язык");
+    }
+    public LanguagesSubmenu(String text) {
+        super(text, "/icons/Language.png", true);
+        for (LanguageName languageName : LanguageName.values()) {
+            if (languageName.equals(LanguageName.fortran) ||
+                    (languageName.equals(LanguageName.c) ||
+                            (languageName.equals(LanguageName.cpp)))) {
+
+                JMenuItem languageItem = new StableMenuItem(languageName.getDescription());
+                String li = languageName.getIcon();
+                if (!li.isEmpty())
+                    languageItem.setIcon(Utils.getIcon(li));
+                languageItem.addActionListener(
+                        new AbstractAction() {
+                            @Override
+                            public void actionPerformed(ActionEvent e) {
+                                action(languageName);
+                            }
+                        });
+                add(languageItem);
+            }
+        }
+    }
+    public abstract void action(LanguageName languageName);
+}