Created main frame.

src/main/java/gui/src/frames/MainFrame.java

@@ -0,0 +1,103 @@
+/**
+ * @author Aaron Moser
+ * @date 31.10.2023
+ */
+
+package gui.src.frames;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+import gui.src.constants.GUIConstants.Panel;
+import gui.src.constants.GUIConstants.Theme;
+import gui.src.interfaces.Themeable;
+import gui.src.menubar.MenuBar;
+import gui.src.panels.ControllingPanel;
+import gui.src.panels.MonitoringPanel;
+
+import java.awt.GridBagLayout;
+import java.awt.GridBagConstraints;
+
+public class MainFrame extends JFrame implements Themeable {
+
+    private static MainFrame instance;
+
+    private MainFrame() {
+        
+        this.setTitle("Firewall Dashboard");
+
+        this.setJMenuBar(MenuBar.getMenuBar());
+
+        this.setPanel(Panel.MonitoringPanel);
+
+        this.setSize(800, 400);
+
+        this.setLocation(300, 200);
+
+        this.setVisible(true);
+
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+    }
+
+    public static MainFrame getInstance() {
+        if (null == instance) {
+            instance = new MainFrame();
+        }
+        return instance;
+    }
+
+    private void setPanel(JPanel panel) {
+        this.setLayout(new GridBagLayout());
+
+        GridBagConstraints constraints = new GridBagConstraints();
+
+        constraints.gridwidth = 1;
+        constraints.gridheight = 1;
+
+        constraints.gridx = 0;
+        constraints.gridy = 0;
+
+        constraints.anchor = GridBagConstraints.CENTER;
+
+        this.add(panel, constraints);
+    }
+
+    public void setPanel(Panel kindOfPanel) {
+        try {
+            switch (kindOfPanel) {
+                case MonitoringPanel: {
+                    this.setPanel(MonitoringPanel.getInstance());
+                }break;
+                case ControllingPanel: {
+                    this.setPanel(ControllingPanel.getInstance());
+                }break;
+                default: {
+                    throw new Exception("Unknown kind of panel.");
+                }
+            }
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+            this.setPanel(Panel.MonitoringPanel);
+        }
+    }
+
+    public void setThemeColor(Theme themeColor) {
+        try {
+            switch (themeColor) {
+                case Dark: {
+                    
+                }break;
+                case Light: {
+                    
+                }break;
+                default: {
+                    throw new Exception("Unknown kind of theme color.");
+                }
+            }
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+            this.setThemeColor(Theme.Light);
+        }
+    }
+}
+