Completed add and del butt

src/main/data/WatchList.java

@@ -5,12 +5,16 @@ import java.io.*;
 import data.StockEntry;
 import ui.Main;
 import data.exceptions.*;
-import observer.Subject;
+import java.util.Observable;
 
-public class WatchList extends Subject implements Load,Save {
+public class WatchList extends Observable implements Load,Save {
     private LinkedHashMap<String, StockEntry> listdata;
     public static final String DEFAULT_SAVEFILE = ".jwatch.list";
 
+    public enum Etype {
+        UPDATE, ADD, DEL
+    }
+
     // Effects: List is empty
     //  or loaded with save values
     public WatchList() {
@@ -18,7 +22,7 @@ public class WatchList extends Subject implements Load,Save {
         if (fileExists(DEFAULT_SAVEFILE)) {
             load("");
         }
-	ListOfWatchList.getList().addWatchList(this);
+        ListOfWatchList.getList().addWatchList(this);
     }
 
     // Debug constructor
@@ -32,8 +36,10 @@ public class WatchList extends Subject implements Load,Save {
     // Requires: target doesn't already exists
     public void addStock(String target) {
         //The only implementation yet
-	StockType stype = StypeMap.getStype("NYSE");
+        StockType stype = StypeMap.getStype("NYSE");
         this.listdata.put(target, new StockEntry(stype, target));
+        setChanged();
+        notifyObservers(new Wevent(Etype.ADD, size()));
     }
 
     // Effects: Delete an entry with key==target
@@ -43,7 +49,14 @@ public class WatchList extends Subject implements Load,Save {
         if (!listdata.containsKey(target)) {
             throw new StockNotExistsException();
         }
+	int index = new ArrayList(listdata.keySet()).indexOf(target);
         this.listdata.remove(target);
+        setChanged();
+        notifyObservers(new Wevent(Etype.DEL, index));
+    }
+
+    public String[] getNames() {
+        return listdata.keySet().toArray(new String[0]);
     }
 
     // Effects: Return an iterator of the list
@@ -59,9 +72,9 @@ public class WatchList extends Subject implements Load,Save {
         return entryset.iterator();
     }
 
-    //XXX index access method
     public StockEntry getStock(int index) {
-        return (StockEntry) listdata.entrySet().toArray()[index];
+        String key = (String) listdata.keySet().toArray()[index];
+        return (StockEntry) listdata.get(key);
     }
 
     // Effects: Return the size of list
@@ -81,7 +94,7 @@ public class WatchList extends Subject implements Load,Save {
             while (iterate.hasNext()) {
                 Map.Entry entry = (Map.Entry)iterate.next();
                 String outString = (String)entry.getKey();
-		System.out.println("Exported: " + outString);
+                System.out.println("Exported: " + outString);
                 bwriter.write(outString);
                 bwriter.newLine();
             }
@@ -125,6 +138,29 @@ public class WatchList extends Subject implements Load,Save {
             StockEntry sentry = (StockEntry)entry.getValue();
             sentry.update();
         }
-        sendMsg();        
+        setChanged();
+        notifyObservers(new Wevent(Etype.UPDATE));
+    }
+
+    public class Wevent {
+        private Etype type;
+        private int data;
+
+        public Wevent(Etype type) {
+            this(type, 0);
+        }
+
+        public Wevent(Etype type, int num) {
+            this.type = type;
+            this.data = num;
+        }
+
+        public Etype getType() {
+            return type;
+        }
+
+        public int getData() {
+            return data;
+        }
     }
 }

src/main/observer/Subject.java

@@ -1,24 +0,0 @@
-package observer;
-
-import java.util.List;
-import java.util.ArrayList;
-import java.util.Collections;
-
-public abstract class Subject {
-    protected ArrayList<Wobserver> obsList = new ArrayList<Wobserver>();
-
-    public void addObs(Wobserver obs) {
-        obsList.add(obs);
-    }
-
-    public void delObs(Wobserver obs) {
-        //Collections.singleton from https://howtodoinjava.com/java/collections/arraylist/arraylist-removeall/
-        obsList.removeAll(Collections.singleton(obs));
-    }
-
-    public void sendMsg() {
-        for (Wobserver obs : obsList) {
-            obs.update(this);
-        }
-    }
-}

src/main/observer/Wobserver.java

@@ -1,8 +0,0 @@
-package observer;
-
-import java.util.List;
-import data.WatchList;
-
-public interface Wobserver {
-    public void update(Subject obsed);
-}

src/main/ui/Gui.java

@@ -8,6 +8,8 @@ import javax.swing.GroupLayout;
 import java.awt.Container;
 import java.awt.LayoutManager;
 import ui.guicomp.*;
+import data.WatchList;
+import data.ListOfWatchList;
 import static data.Const.PROGRAM_NAME;
 import javax.swing.GroupLayout.Alignment;
 
@@ -16,6 +18,8 @@ public class Gui extends JFrame implements Iface {
     private JButton addButton;
     private JButton delButton;
     private JButton upButton;
+    private WatchTablePane wtable;
+    private WatchList wlist;
     private Runnable init = new Runnable() {
         public void run() {
             addComponents();
@@ -27,9 +31,10 @@ public class Gui extends JFrame implements Iface {
         }
 
         private void addComponents() {
-            addButton = new AddButt();
-            delButton = new DelButt();
-            upButton = new UpButt();
+            addButton = new AddButt(wlist);
+            delButton = new DelButt(wlist);
+            upButton = new UpButt(wlist);
+            wtable = new WatchTablePane(wlist);
         }
 
         private void createLayout() {
@@ -38,12 +43,14 @@ public class Gui extends JFrame implements Iface {
             pane.setLayout(lman);
             lman.setAutoCreateContainerGaps(true);
             lman.setHorizontalGroup(lman.createParallelGroup(GroupLayout.Alignment.CENTER)
+                    .addComponent(wtable.getPane())
                     .addGroup(lman.createSequentialGroup()
                             .addComponent(addButton)
                             .addComponent(delButton)
                             .addComponent(upButton)
                         ));
             lman.setVerticalGroup(lman.createSequentialGroup()
+                    .addComponent(wtable.getPane())
                     .addGroup(lman.createParallelGroup(GroupLayout.Alignment.CENTER)
                         .addComponent(addButton)
                         .addComponent(delButton)
@@ -53,6 +60,7 @@ public class Gui extends JFrame implements Iface {
     };
 
     public Gui() {
+        wlist = ListOfWatchList.getList().getWatchList(0);
         SwingUtilities.invokeLater(init);
         setVisible(true);
     }

src/main/ui/Tui.java

@@ -9,9 +9,10 @@ import data.WatchList;
 import data.StockEntry;
 import data.ListOfWatchList;
 import data.exceptions.*;
-import observer.*;
+import java.util.Observer;
+import java.util.Observable;
 
-public class Tui implements Iface, Wobserver {
+public class Tui implements Iface, Observer {
     private static final String SAVE_CURSOR = "\u001b[s";
     private static final String RESTORE_CURSOR = "\u001b[s";
     private static final String REQUEST_CURSOR = "\u001b[6n";
@@ -23,7 +24,7 @@ public class Tui implements Iface, Wobserver {
         stdin = new BufferedReader(new InputStreamReader(System.in));
         getMax();
         WatchList watch = ListOfWatchList.getList().getWatchList(0); 
-        watch.addObs(this);
+        watch.addObserver(this);
         //XXX Start ui thread
         demo();
     }
@@ -182,7 +183,7 @@ public class Tui implements Iface, Wobserver {
     }
 
     @Override
-    public void update(Subject obsed) {
+    public void update(Observable obsed, Object event) {
         printWatchList();
     }
 }

src/main/ui/guicomp/AddButt.java

@@ -3,17 +3,33 @@ package ui.guicomp;
 import javax.swing.JButton;
 import java.awt.event.ActionListener;
 import java.awt.event.ActionEvent;
+import javax.swing.JOptionPane;
+import data.WatchList;
 
 public class AddButt extends JButton {
-    public AddButt() {
+    private WatchList wlist;
+
+    public AddButt(WatchList wlist) {
         super("Add Stock...");
         addActionListener(new AddButtList());
+        this.wlist = wlist;
     }
 
     private class AddButtList implements ActionListener {
         public void actionPerformed(ActionEvent e) {
-            //XXX Ask for input dialogue
             //https://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html#input
+            //https://docs.oracle.com/javase/7/docs/api/javax/swing/JOptionPane.html
+            String userin = (String)JOptionPane.showInputDialog("Enter the identifier:");
+            if ((userin != null) && (userin.length() > 0)) {
+                //https://stackoverflow.com/questions/12771500/best-way-of-creating-and-using-an-anonymous-runnable-class
+                new Thread(new Runnable() {
+                    @Override
+                    public void run() {
+                        wlist.addStock(userin);
+                        wlist.updateList();
+                    }
+                }).start();
+            }
         }
     }
 }

src/main/ui/guicomp/DelButt.java

@@ -3,17 +3,41 @@ package ui.guicomp;
 import javax.swing.JButton;
 import java.awt.event.ActionListener;
 import java.awt.event.ActionEvent;
+import javax.swing.JOptionPane;
+import data.WatchList;
+import data.exceptions.StockNotExistsException;
 
 public class DelButt extends JButton {
-    public DelButt() {
+    private WatchList wlist;
+
+    public DelButt(WatchList wlist) {
         super("Remove Stock...");
         addActionListener(new DelButtList());
+        this.wlist = wlist;
     }
 
     private class DelButtList implements ActionListener {
         public void actionPerformed(ActionEvent e) {
-            //XXX Ask for input dialogue
             //https://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html#input
+            //https://docs.oracle.com/javase/7/docs/api/javax/swing/JOptionPane.html
+            String[] names = wlist.getNames();
+            String userin = (String)JOptionPane.showInputDialog(
+                    null, "Choose a stock to delete:", "Delete Stock",
+                    JOptionPane.PLAIN_MESSAGE, null, names, null);
+            if ((userin != null) && (userin.length() > 0)) {
+                //https://stackoverflow.com/questions/12771500/best-way-of-creating-and-using-an-anonymous-runnable-class
+                new Thread(new Runnable() {
+                    @Override
+                    public void run() {
+                        try {
+                            wlist.delStock(userin);
+                        } catch (StockNotExistsException e) {
+                            //impossible
+                            e.printStackTrace();
+                        }
+                    }
+                }).start();
+            }
         }
     }
 }

src/main/ui/guicomp/UpButt.java

@@ -3,11 +3,15 @@ package ui.guicomp;
 import javax.swing.JButton;
 import java.awt.event.ActionListener;
 import java.awt.event.ActionEvent;
+import data.WatchList;
 
 public class UpButt extends JButton {
-    public UpButt() {
+    private WatchList wlist;
+
+    public UpButt(WatchList wlist) {
         super("Update");
         addActionListener(new UpButtList());
+	this.wlist = wlist;
     }
 
     private class UpButtList implements ActionListener {

src/main/ui/guicomp/WatchTableModel.java

@@ -4,16 +4,22 @@ import javax.swing.table.AbstractTableModel;
 import javax.swing.table.TableModel;
 import javax.swing.event.*;
 import data.WatchList;
+import data.WatchList.Wevent;
 import data.StockEntry;
+import java.util.Observer;
+import java.util.Observable;
+import javax.swing.SwingUtilities;
 
 // Ref: https://docs.oracle.com/javase/tutorial/uiswing/components/table.html
 // Ref2: https://docs.oracle.com/javase/8/docs/api/javax/swing/table/AbstractTableModel.html
-public class WatchTableModel extends AbstractTableModel {
+public class WatchTableModel extends AbstractTableModel implements Observer {
     private final String[] colnames = {"Identifier", "Price", "% change", "Status"};
+    private final Object[] example = {"asdf", 0.0, "asdf", "asdf"}; 
     private WatchList watch;
 
     public WatchTableModel(WatchList wlist) {
         watch = wlist;
+        watch.addObserver(this);
     }
 
     public int getColumnCount() {
@@ -45,6 +51,27 @@ public class WatchTableModel extends AbstractTableModel {
     }
 
     public Class getColumnClass(int col) {
-        return getValueAt(0,col).getClass();
+        return example[col].getClass();
+    }
+
+    @Override
+    public void update(Observable obsed, Object event) {
+        Wevent weve = (Wevent) event;
+        switch (weve.getType()) {
+            case UPDATE:
+                SwingUtilities.invokeLater(() -> {
+                    fireTableDataChanged(); });
+                break;
+            case ADD:
+                SwingUtilities.invokeLater(() -> {
+                    fireTableRowsInserted(weve.getData(), weve.getData()); });
+                break;
+            case DEL:
+                SwingUtilities.invokeLater(() -> {
+                    fireTableRowsDeleted(weve.getData(), weve.getData()); });
+                break;
+            default:
+                break;
+        }
     }
 }

src/main/ui/guicomp/WatchTablePane.java

@@ -0,0 +1,23 @@
+package ui.guicomp;
+
+import javax.swing.JTable;
+import javax.swing.JScrollPane;
+import javax.swing.table.TableModel;
+import data.WatchList;
+
+//https://docs.oracle.com/javase/7/docs/api/javax/swing/JTable.html
+public class WatchTablePane {
+    private JTable table;
+    private TableModel tmodel;
+    private JScrollPane spane;
+
+    public WatchTablePane(WatchList wlist) {
+        tmodel = new WatchTableModel(wlist);
+        table = new JTable(tmodel);
+        spane = new JScrollPane(table);
+    }
+
+    public JScrollPane getPane() {
+        return spane;
+    }
+}