add: parent menu

src/main/java/com/bib/essensbestellungsverwaltung/ParentMenuController.java

@@ -0,0 +1,78 @@
+package com.bib.essensbestellungsverwaltung;
+
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.control.Button;
+import javafx.scene.input.ContextMenuEvent;
+import javafx.scene.input.MouseEvent;
+import javafx.scene.layout.Background;
+import javafx.scene.layout.BorderPane;
+
+import java.io.IOException;
+import java.util.Arrays;
+
+public class ParentMenuController {
+
+    @FXML
+    BorderPane contentView;
+    @FXML
+    Button essensplanButton;
+    @FXML
+    Button kinderButton;
+    @FXML
+    Button bestellungButton;
+    @FXML
+    Button einstellungenButton;
+
+    @FXML
+    public void initialize() {
+        changePage("menue-view.fxml");
+        setButtonActive(essensplanButton);
+    }
+
+
+    @FXML
+    public void onEssensplanClick(MouseEvent mouseEvent) {
+        setButtonActive(essensplanButton);
+        changePage("menue-view.fxml");
+    }
+
+    @FXML
+    public void onKinderClick(MouseEvent mouseEvent) {
+        setButtonActive(kinderButton);
+        changePage("child-view.fxml");
+    }
+
+    @FXML
+    public void onBestellungClick(MouseEvent mouseEvent) {
+        setButtonActive(bestellungButton);
+        changePage("dailyOrder-view.fxml");
+    }
+
+    @FXML
+    public void onEinstellungenClick(MouseEvent mouseEvent) {
+        setButtonActive(einstellungenButton);
+        changePage("menue-view.fxml");
+    }
+
+    @FXML
+    public void onAusloggenClick(MouseEvent mouseEvent) {
+    }
+
+    private void changePage(String page) {
+        try {
+            Parent root = FXMLLoader.load(getClass().getResource(page));
+            contentView.setCenter(root);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+    private void setButtonActive(Button b){
+        einstellungenButton.getStyleClass().remove("active");
+        kinderButton.getStyleClass().remove("active");
+        bestellungButton.getStyleClass().remove("active");
+        essensplanButton.getStyleClass().remove("active");
+        b.getStyleClass().add("active");
+    }
+}