tasks Zeigen

Programmierung2/src/TodoListApp/GUI_UserInterface/GUI_UserInterface.java

@@ -13,6 +13,7 @@ public class GUI_UserInterface extends JFrame {
     private JButton addTask;
     private JButton zeigeAlleTasks;
     private JTextArea AllTasksArea;
+    private JButton clear;
     
     public GUI_UserInterface() {
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
@@ -57,6 +58,10 @@ public class GUI_UserInterface extends JFrame {
         zeigeAlleTasks.setBounds(193, 506, 159, 29);
         panel.add(zeigeAlleTasks);
         
+        clear = new JButton("Clear TextArea");
+        clear.setBounds(384, 506, 159, 29);
+        panel.add(clear);
+        setLocationRelativeTo(null); 
         this.setVisible(true);
 
     }
@@ -76,6 +81,14 @@ public class GUI_UserInterface extends JFrame {
 	public void setAllTasksArea(JTextArea allTasksArea) {
 		AllTasksArea = allTasksArea;
 	}
+	public void showInfo(String message) {
+		  JOptionPane.showMessageDialog(null, message, "Studen angemeldet", JOptionPane.INFORMATION_MESSAGE);
+	}
+
+	public JButton getClear() {
+		return clear;
+	}
+	
 	
 	
 }

Programmierung2/src/TodoListApp/GUI_UserInterface/GUI_addTask.java

@@ -5,7 +5,6 @@ import java.awt.*;
 import javax.swing.*;
 import javax.swing.border.EmptyBorder;
 import javax.swing.border.LineBorder;
-import javax.swing.table.DefaultTableModel;
 
 import TodoListApp.Domain.*;
 
@@ -97,6 +96,7 @@ public class GUI_addTask extends JFrame {
         submitTask = new JButton("Submit");
         submitTask.setBounds(24, 323, 123, 23);
         panel.add(submitTask);
+        setLocationRelativeTo(null); 
     }
     
     public void zeigeFensterAddTask() {

Programmierung2/src/TodoListApp/GUI_UserInterface/Userverwalter.java

@@ -8,6 +8,7 @@ public class Userverwalter {
 	private ProgrammSystem system;
 	private GUI_UserInterface user;
 	private GUI_addTask taskHinziFuegenFenster;
+	private int index = 0;
 
 	public Userverwalter() {
 		this.system = new ProgrammSystem();
@@ -34,13 +35,13 @@ public class Userverwalter {
 		});
 
 		user.getZeigeAlleTasks().addActionListener(e -> showAllTasks());
+		user.getClear().addActionListener(e -> clearTextArea());
 
 	}
 
 	public void zeigeFenster() throws FalscheEinagebException {
 		taskHinziFuegenFenster.zeigeFensterAddTask();
 
-		
 	}
 
 	public void addTask() throws FalscheEinagebException {
@@ -63,9 +64,23 @@ public class Userverwalter {
 	}
 
 	public void showAllTasks() {
-		for (String s : system.showAllTasks()) {
-			user.getAllTasksArea().append(s);
+		if (system.showAllTasks().size() == 0) 
+			user.showInfo("Momentan befinden sich keine Taks");
+		
+		else if (index >= system.showAllTasks().size()) 
+			user.showInfo("Es gibt keine Tasks mehr!");
+			
+		else {
+			while (index < system.showAllTasks().size()) {
+				user.getAllTasksArea().append(system.showAllTasks().get(index++));
 				user.getAllTasksArea().append("\n");
 			}
 		}
+		
+	}
+	
+	public void clearTextArea() {
+		user.getAllTasksArea().setText("");
+		index = 0;
+	}
 }