Add excercise 5.1

de.hhn.ai.prog2.blatt3.pizzashop/pizza.txt

@@ -0,0 +1,3 @@
+Test#LARGE#CHEESE#TOMATO#HAM#
+Hello World#FAMILY#CHEESE#TOMATO#HAM#MUSHROOM#
+Test#SMALL#HAM#

de.hhn.ai.prog2.blatt3.pizzashop/src/app/MyPizzaShop.java

@@ -5,11 +5,9 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.GridLayout;
-import java.awt.Panel;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.EnumSet;
 import java.util.List;
 
@@ -23,8 +21,11 @@ import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
+import javax.swing.ListSelectionModel;
 import javax.swing.WindowConstants;
 
+import app.io.PizzaIOHandler;
+
 public class MyPizzaShop extends JFrame {
     private static final long serialVersionUID = -5421020006317002203L;
 
@@ -114,24 +115,42 @@ public class MyPizzaShop extends JFrame {
         private CenterPanel() {
             this.setLayout(new GridLayout(5, 2));
             this.add(wrap(new JLabel("Name:")));
-            this.add(wrap(new JTextField(20)));
+            JTextField name = new JTextField(20);
+            this.add(wrap(name));
             this.add(wrap(new JLabel("Größe:")));
-            String[] pizzaSizes = new String[EnumSet.allOf(PizzaSize.class).size()];
+            String[] availPizzaSizes = new String[EnumSet.allOf(PizzaSize.class).size()];
             int i = 0;
             for (PizzaSize size : EnumSet.allOf(PizzaSize.class)) {
-                pizzaSizes[i++] = size.getName();
+                availPizzaSizes[i++] = size.getName();
             }
-            this.add(wrap(new JList<String>(pizzaSizes)));
+            JList<String> pizzaSize = new JList<String>(availPizzaSizes);
+            this.add(wrap(pizzaSize));
             this.add(wrap(new JLabel("Belag:")));
-            String[] toppings = new String[EnumSet.allOf(Topping.class).size()];
+            String[] availToppings = new String[EnumSet.allOf(Topping.class).size()];
             i = 0;
             for (Topping topping : EnumSet.allOf(Topping.class)) {
-                toppings[i++] = topping.getName();
+                availToppings[i++] = topping.getName();
             }
-            this.add(wrap(new JList<String>(toppings)));
+            JList<String> toppings = new JList<String>(availToppings);
+            toppings.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
+            this.add(wrap(toppings));
             this.add(wrap(new JPanel()));
             this.add(wrap(priceLabel));
-            this.add(wrap(new JButton("Abschicken")));
+            JButton sendBtn = new JButton("Abschicken");
+            sendBtn.addActionListener(new ActionListener() {
+                @Override
+                public void actionPerformed(ActionEvent e) {
+                    List<Pizza> pizzas = PizzaIOHandler.read(null);
+                    List<Topping> toppingList = new ArrayList<Topping>();
+                    for (int t : toppings.getSelectedIndices()) {
+                        toppingList.add(Topping.values()[t]);
+                    }
+                    pizzas.add(
+                            new Pizza(name.getText(), PizzaSize.values()[pizzaSize.getSelectedIndex()], toppingList));
+                    PizzaIOHandler.write(pizzas, null);
+                }
+            });
+            this.add(wrap(sendBtn));
             this.add(wrap(new JButton("Ausdrucken")));
             setPrice(price);
         }

de.hhn.ai.prog2.blatt3.pizzashop/src/app/Pizza.java

@@ -40,7 +40,8 @@ public class Pizza {
 
     @Override
     public String toString() {
-        return "Test"; // TODO:
+        return "{\n  name: " + this.name + ",\n  size: " + this.size + ",\n  toppings: " + this.toppings.toString()
+                + ",\n}";
     }
 
 }

de.hhn.ai.prog2.blatt3.pizzashop/src/app/io/PizzaIOHandler.java

@@ -0,0 +1,57 @@
+package app.io;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import app.Pizza;
+import app.PizzaSize;
+import app.Topping;
+
+public class PizzaIOHandler {
+    public static List<Pizza> read(String fileName) {
+        if (fileName == null)
+            fileName = "pizza.txt";
+        List<Pizza> pizzas = new ArrayList<Pizza>();
+        try {
+            BufferedReader reader = new BufferedReader(new FileReader(fileName));
+            String line = null;
+            while ((line = reader.readLine()) != null) {
+                String[] val = line.split("#");
+                List<Topping> toppings = new ArrayList<Topping>();
+                for (int i = 2; i < val.length; i++) {
+                    toppings.add(Topping.valueOf(val[i]));
+                }
+                pizzas.add(new Pizza(val[0], PizzaSize.valueOf(val[1]), toppings));
+            }
+            reader.close();
+            System.out.println(pizzas);
+            return pizzas;
+        } catch (IOException ex) {
+            System.out.println("###ERROR### (IOException)");
+        }
+        return null;
+    }
+
+    public static void write(List<Pizza> pizzas, String fileName) {
+        if (fileName == null)
+            fileName = "pizza.txt";
+        try (PrintWriter writer = new PrintWriter(new FileWriter(fileName))) {
+            for (Pizza pizza : pizzas) {
+                String line = pizza.getName();
+                line += "#" + pizza.getSize() + "#";
+                for (Topping topping : pizza.getToppings()) {
+                    line += topping + "#";
+                }
+                writer.println(line);
+            }
+        } catch (IOException ex) {
+            System.out.println("###ERROR### (IOException)");
+        }
+    }
+}