(Model)-View-Controller Beispiel

Reto7 · Reto7 · commit 8a0ea7f0aeb4 · 2017-01-22T22:08:55.000+01:00
diff --git a/Semester1/src/main/java/Fach_3_Swing/ch/ibw/swing/events/RetoEventController.java b/Semester1/src/main/java/Fach_3_Swing/ch/ibw/swing/events/RetoEventController.java
@@ -0,0 +1,23 @@
+package Fach_3_Swing.ch.ibw.swing.events;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class RetoEventController implements ActionListener {
+
+    RetoEventView view;
+
+    public RetoEventController(RetoEventView view) {
+        this.view = view;
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent actionEvent) {
+        System.out.println("command: " +actionEvent.getActionCommand());
+        if (actionEvent.getActionCommand() == RetoEventView.OKBUTTON ) {
+            view.aktualisiereAnzeige("OK gedrueckt");
+        } else if (actionEvent.getActionCommand() == RetoEventView.CANCELBUTTON ) {
+            view.aktualisiereAnzeige("CANCEL gedrueckt");
+        }
+    }
+}
diff --git a/Semester1/src/main/java/Fach_3_Swing/ch/ibw/swing/events/RetoEventTestRahmen.java b/Semester1/src/main/java/Fach_3_Swing/ch/ibw/swing/events/RetoEventTestRahmen.java
@@ -0,0 +1,16 @@
+package Fach_3_Swing.ch.ibw.swing.events;
+
+import javax.swing.*;
+
+/**
+ * Created by user on 22.01.2017.
+ */
+public class RetoEventTestRahmen {
+    public static void main(String[] args) {
+        RetoEventView r = new RetoEventView();
+        r.setTitle("Test");
+        r.setSize(240,160);
+        r.setVisible(true);
+        r.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+    }
+}
diff --git a/Semester1/src/main/java/Fach_3_Swing/ch/ibw/swing/events/RetoEventView.java b/Semester1/src/main/java/Fach_3_Swing/ch/ibw/swing/events/RetoEventView.java
@@ -0,0 +1,68 @@
+package Fach_3_Swing.ch.ibw.swing.events;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+/**
+ * Created by user on 22.01.2017.
+ */
+public class RetoEventView extends JFrame {
+
+    public static final String OKBUTTON = "okPressed";
+    public static final String CANCELBUTTON = "cancelPressed";
+
+    // neuer Controller instanzieren, wir geben ihm als Parameter uns selber (view) mit
+    // damit kann der Controller dann Daten direkt zu uns zurueckgeben
+    private RetoEventController cntl = new RetoEventController(this);
+
+    JLabel anzeige;
+    public void aktualisiereAnzeige(String anzeigeText) {
+        this.anzeige.setText(anzeigeText);
+    }
+
+    //Constructor
+    RetoEventView() {
+        // 2 Rows, 1 Spalte
+        this.setLayout(new GridLayout(2,1));
+
+        JButton okButton = new JButton("ok");
+        // ACTIONLISTENER!
+        okButton.addActionListener(cntl);
+        okButton.setActionCommand(OKBUTTON);
+
+        JButton cancelButton = new JButton("cancel");
+        // ACTIONLISTENER!
+        cancelButton.addActionListener(cntl);
+        cancelButton.setActionCommand(CANCELBUTTON);
+
+        anzeige = new JLabel();
+        anzeige.setText("-");
+
+        // aufs Layout
+        this.add(okButton);
+        this.add(cancelButton);
+        this.add(anzeige);
+    }
+
+//  //--------------------------------------------------------------------
+//  //als innere klasse
+//    private class RetoEventController implements ActionListener {
+//
+//        @Override
+//        public void actionPerformed(ActionEvent actionEvent) {
+//            System.out.println("command: " +actionEvent.getActionCommand());
+//            if (actionEvent.getActionCommand() == RetoEvent.OKBUTTON ) {
+//
+//            }
+//        }
+//  //--------------------------------------------------------------------
+//  //als anonyme klasse (als Parameter in okButton.addActionListener()  )
+//      new ActionListener() {
+//        @Override
+//        public void actionPerformed(ActionEvent actionEvent) {
+//        }
+//    };
+
+}
