Added search bar adn some bug fiexs

src/main/java/eu/toldi/rss/Article.java

@@ -117,6 +117,7 @@ public class Article {
 
 
     public void open(){
+        if(getURL() == null) return;
         Desktop desktop;
         if(Desktop.isDesktopSupported() && (desktop = Desktop.getDesktop()).isSupported(Desktop.Action.BROWSE)){
             try {

src/main/java/eu/toldi/rss/FeedFrame.java

@@ -1,11 +1,8 @@
 package eu.toldi.rss;
 
-import org.xml.sax.helpers.DefaultHandler;
-
-import javax.naming.ldap.SortKey;
 import javax.swing.*;
-import javax.swing.event.TreeSelectionEvent;
+import javax.swing.event.DocumentEvent;
-import javax.swing.event.TreeSelectionListener;
+import javax.swing.event.DocumentListener;
 import javax.swing.table.TableRowSorter;
 import javax.swing.tree.*;
 import java.awt.*;
@@ -34,12 +31,13 @@ public class FeedFrame extends JFrame {
     private DefaultMutableTreeNode treeRoot;
 
     public FeedFrame() {
-
         setTitle("RSS Feed reader");
         setDefaultCloseOperation(EXIT_ON_CLOSE);
         setMinimumSize(new Dimension(900, 600));
         initData();
         initComponents();
+        UpdaterThread updater = new UpdaterThread(data,table);
+        updater.start();
     }
 
     private void initData() {
@@ -65,7 +63,36 @@ public class FeedFrame extends JFrame {
 
         table.setRowSorter(sorter);
         add(scrollPane, BorderLayout.CENTER);
+    }
 
+    private void initSearchBar(){
+        JTextField searchBox = new JTextField();
+        searchBox.setColumns(50);
+        searchBox.getDocument().addDocumentListener(new DocumentListener() {
+            public void changedUpdate(DocumentEvent e) {
+                search();
+            }
+            public void removeUpdate(DocumentEvent e) {
+                search();
+            }
+            public void insertUpdate(DocumentEvent e) {
+                search();
+            }
+            public void search(){
+                String text = searchBox.getText();
+                if (text.trim().length() == 0) {
+                    sorter.setRowFilter(null);
+                } else {
+                    sorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
+                }
+            }
+        });
+        JPanel searchPanel = new JPanel(new BorderLayout());
+        JLabel searchText = new JLabel("Search:",JLabel.LEFT);
+        searchPanel.setLayout(new FlowLayout());
+        searchPanel.add(searchText);
+        searchPanel.add(searchBox);
+        add(searchPanel, BorderLayout.NORTH);
     }
 
     private void initMenuBar() {
@@ -116,6 +143,7 @@ public class FeedFrame extends JFrame {
         ImageIcon icon = new ImageIcon(this.getClass().getResource("/icon.png"));
         this.setIconImage(icon.getImage());
         initTable();
+        initSearchBar();
         initMenuBar();
         initTree();
     }

src/main/java/eu/toldi/rss/UpdaterThread.java

@@ -1,6 +1,7 @@
 package eu.toldi.rss;
 
 import javax.swing.*;
+import javax.swing.table.TableRowSorter;
 import java.io.IOException;
 
 public class UpdaterThread extends Thread{
@@ -15,6 +16,11 @@ public class UpdaterThread extends Thread{
     @Override
     public void run() {
         while (true) {
+            try {
+                sleep(60 * 1000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
             for (Feed f : data.getFeeds()) {
                 try {
                     f.updateFeed();
@@ -22,14 +28,10 @@ public class UpdaterThread extends Thread{
                     e.printStackTrace();
                 }
             }
-            RowSorter sorter = table.getRowSorter();
+            TableRowSorter<FeedData> sorter = (TableRowSorter<FeedData>) table.getRowSorter();
             table.setModel(data);
+            table.setRowSorter(sorter);
             table.updateUI();
-            try {
-                sleep(60 * 1000);
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
         }
     }
 }