Amélioration interface + corrections bugs

chatGitElise/.classpath

@@ -16,5 +16,10 @@
 			<attribute name="module" value="true"/>
 		</attributes>
 	</classpathentry>
+	<classpathentry kind="lib" path="C:/Users/momof/eclipse-workspace/chatGitElise/lib/JTattoo-1.6.13.jar">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

chatGitElise/config.json

@@ -5,8 +5,8 @@
         "port": 8080
     },
     "config":{
-        "interface": "wlan2",
+        "interface": "wlan3",
-        "portSrc": 26000,
+        "portSrc": 26001,
-        "portDest":26001
+        "portDest":26000
     }
 }

chatGitElise/src/controller/Agent.java

@@ -1,6 +1,8 @@
 package controller;
 
 import java.awt.Color;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
@@ -11,6 +13,7 @@ import java.net.SocketException;
 import java.util.ArrayList;
 
 import javax.swing.text.BadLocationException;
+import javax.swing.text.DefaultCaret;
 import javax.swing.text.SimpleAttributeSet;
 import javax.swing.text.StyleConstants;
 import javax.swing.text.StyledDocument;
@@ -38,6 +41,7 @@ public class Agent implements PropertyChangeListener{
 		
 	private PropertyChangeSupport support;
 	
+	private boolean open = true;
 	
 	
 	public Agent(InetAddress address, int portIn, int portOut) throws IOException {
@@ -97,9 +101,10 @@ public class Agent implements PropertyChangeListener{
     		break;
     	
 		case "Msg TCP Recu" : 
+			Color c = new Color(25, 94, 125);
 			SimpleAttributeSet left = new SimpleAttributeSet();
 	        StyleConstants.setAlignment(left, StyleConstants.ALIGN_LEFT);
-	        StyleConstants.setForeground(left, Color.RED);
+	        StyleConstants.setForeground(left, c.brighter());
 			//System.out.println("dans property change");
 			TCPChat tcpChatCo = this.listTCPOk.get(0);
 			MessageChat msgRecu = tcpChatCo.getMessageRecu();
@@ -169,6 +174,7 @@ public class Agent implements PropertyChangeListener{
 			
 		case 3 : 
 			MessagePseudo messageNewPseudo = (MessagePseudo) msg;
+			this.open = false;
 			//Contact contact = list.findContact(messageNewPseudo.getPseudo());
 			//int id = this.db.getIdFromPseudo(contact.getPseudo());
 			 for(int i = 0 ; i<FenetreMenu.getCb().getItemCount() ; i++){//Combo étant ton JComboBox
@@ -178,7 +184,6 @@ public class Agent implements PropertyChangeListener{
 		           	FenetreMenu.getCb().addItem(messageNewPseudo.getPseudo());
 		         }
 		      }		
-			//FenetreMenu.getCb().removeItem(messageNewPseudo.getPseudo());			
 		}
 		
 	}
@@ -359,4 +364,12 @@ public class Agent implements PropertyChangeListener{
 		return this.listTCPDeg.remove(0);
 	}
 	
+	public boolean getOpen() {
+		return this.open;
+	}
+	
+	public void setOpen(boolean res) {
+		this.open = res;
+	}
+	
 }

chatGitElise/src/gui/FenetreChat.java

@@ -6,6 +6,7 @@ import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
+import java.io.File;
 import java.io.IOException;
 import java.net.InetAddress;
 import java.sql.SQLException;
@@ -17,6 +18,7 @@ import java.util.List;
 
 import javax.swing.*;
 import javax.swing.text.BadLocationException;
+import javax.swing.text.DefaultCaret;
 import javax.swing.text.SimpleAttributeSet;
 import javax.swing.text.StyleConstants;
 import javax.swing.text.StyledDocument;
@@ -32,13 +34,15 @@ import java.awt.*;
 public class FenetreChat extends JFrame implements PropertyChangeListener{
 	
 	static JFrame frame;
-	Agent agent;
+	static Agent agent;
 	static Contact dest; //destinataire du message
 	Contact user; //utilisateur
 	
 	WindowAdapter wa;
 	JPanel panel;
-	static JTextArea ta;
+	static JTextArea text;
+
+	private TCPChat t=null;
 	
     static StyledDocument doc;
     private static boolean ouvert=false;
@@ -54,7 +58,6 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 		this.dest = Request.getUser(userString, "getUser");
 		
 		InetAddress adr = dest.getAddress();
-		TCPChat t=null;
 		for(TCPChat tcp : agent.getListeTCPChat()) {
 			if(tcp.getSocket().getInetAddress().equals(adr)) {
 				t=tcp;
@@ -71,13 +74,24 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 				public void windowClosing(WindowEvent e) {
 					int quitter = FenetreMenu.fenetreFermeture();
 					if(quitter == 0) {
+						/*try {
+							t.getSocket().close();
+						} catch (IOException e1) {
+							// TODO Auto-generated catch block
+							e1.printStackTrace();
+						}*/
 						frame.dispose();
 					}
 		}};
 		
-		addWidgets();
+		this.panel = new JPanel();
+		this.panel.setOpaque(false);
+		
+		this.addWidgets();
+		//frame.getContentPane().add(panel, BorderLayout.CENTER);
 		afficherHistorique();
 		
+		
 		frame.addWindowListener(wa);
 		frame.setVisible(true);
 		
@@ -86,18 +100,21 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 
 	private void addWidgets() {
 		
+		Color c = new Color(25, 94, 125);
+		
 		JTextPane textPane = new JTextPane();
 		textPane.setEditable(false);
+		textPane.setOpaque(true);
 
         this.doc = textPane.getStyledDocument();
         
         SimpleAttributeSet right = new SimpleAttributeSet();
         StyleConstants.setAlignment(right, StyleConstants.ALIGN_RIGHT);
-        StyleConstants.setForeground(right, Color.BLUE);
+        StyleConstants.setForeground(right, Color.WHITE);
         
         SimpleAttributeSet left = new SimpleAttributeSet();
         StyleConstants.setAlignment(left, StyleConstants.ALIGN_LEFT);
-        StyleConstants.setForeground(left, Color.RED);
+        StyleConstants.setForeground(left, c.brighter());
 		
 		GridBagLayout gridBagLayout = new GridBagLayout();
 		gridBagLayout.columnWidths = new int[]{394, 0};
@@ -105,19 +122,19 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 		gridBagLayout.columnWeights = new double[]{0.0, Double.MIN_VALUE};
 		gridBagLayout.rowWeights = new double[]{0.0, 0.0, 0.0, Double.MIN_VALUE};
 		this.frame.getContentPane().setLayout(gridBagLayout);
-		this.panel = new JPanel();
 		
 		//zone pour rentrer les message à envoyer
-		JTextArea text = new JTextArea(10, 3);
+		text = new JTextArea(10, 3);
-		text.setForeground(Color.BLACK);
+		text.setForeground(Color.WHITE);
 		text.setFont(new Font("Century Schoolbook", Font.PLAIN, 11));
 		text.setText("Enter your message");
-		text.setLineWrap(true);
+		text.setOpaque(false);
 		
 		JScrollPane sp = new JScrollPane(text);
 		
 		//zone affichage texte
 		JScrollPane sp2 = new JScrollPane(textPane);
+		new SmartScroller(sp2);
 		GridBagConstraints gbc = new GridBagConstraints();
 		gbc.fill = GridBagConstraints.BOTH;
 		gbc.insets = new Insets(0, 0, 5, 0);
@@ -127,6 +144,7 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 		
 		//bouton envoyer
 		JButton envoyer = new JButton("Send");
+		envoyer.setOpaque(false);
 		frame.getRootPane().setDefaultButton(envoyer);
 		envoyer.addActionListener(new ActionListener() {
 			private Date date;
@@ -153,6 +171,7 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 					tcpChat.sendMsg(message);
 					doc.insertString(doc.getLength(), "\n"+message+dateString, right );
 		            doc.setParagraphAttributes(doc.getLength(), 1, right, false);
+		            text.setCaretPosition(text.getDocument().getLength());
 					if(agent.getDb().tableChatExists(idUser, idDest)) {
 						agent.getDb().addMessage(idUser, idDest, message);
 					}else {
@@ -184,12 +203,12 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 
 
 	public static JTextArea getTa() {
-		return ta;
+		return text;
 	}
 
 
 	public void setTa(JTextArea ta) {
-		this.ta = ta;
+		this.text = ta;
 	}
 
 
@@ -203,13 +222,15 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 	}
 	
 	public void afficherHistorique() {
+		Color c = new Color(25, 94, 125);
+		
 		SimpleAttributeSet right = new SimpleAttributeSet();
         StyleConstants.setAlignment(right, StyleConstants.ALIGN_RIGHT);
-        StyleConstants.setForeground(right, Color.BLUE);
+        StyleConstants.setForeground(right, Color.WHITE);
         
         SimpleAttributeSet left = new SimpleAttributeSet();
         StyleConstants.setAlignment(left, StyleConstants.ALIGN_LEFT);
-        StyleConstants.setForeground(left, Color.RED);
+        StyleConstants.setForeground(left, c.brighter());
 		int idUser = agent.getDb().getIdFromPseudo(user.getPseudo());
 		//System.out.println("IDuser = "+idUser);
 		int idDest = agent.getDb().getIdFromPseudo(dest.getPseudo());
@@ -268,6 +289,20 @@ public class FenetreChat extends JFrame implements PropertyChangeListener{
 	}
 	
 	public static void fermer() {
+		TCPChat t = null;
+		/*try {
+			
+			InetAddress adr = dest.getAddress();
+			for(TCPChat tcp : agent.getListeTCPChat()) {
+				if(tcp.getSocket().getInetAddress().equals(adr)) {
+					t=tcp;
+				}
+			}
+			t.getSocket().close();
+		} catch (IOException e1) {
+			// TODO Auto-generated catch block
+			e1.printStackTrace();
+		}*/
 		frame.dispose();
 	}
 	

chatGitElise/src/gui/FenetreConnexion.java

@@ -1,8 +1,11 @@
 package gui;
 
 import java.awt.BorderLayout;
+import java.awt.Color;
 import java.awt.Dimension;
+import java.awt.Graphics;
 import java.awt.GridLayout;
+import java.awt.Image;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 
@@ -13,8 +16,10 @@ import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
 import javax.swing.SwingConstants;
+import javax.swing.UIManager;
 import javax.swing.JOptionPane;
 
+import java.io.File;
 import java.io.IOException;
 
 import controller.*;
@@ -35,6 +40,19 @@ public class FenetreConnexion implements ActionListener {
      * Cette fenetre sera munie d'un bouton de connexion et d'une zone de saisie de pseudo.
      */
     public FenetreConnexion() {
+    	try {
+            //here you can put the selected theme class name in JTattoo
+            UIManager.setLookAndFeel("com.jtattoo.plaf.noire.NoireLookAndFeel");
+ 
+        } catch (ClassNotFoundException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (InstantiationException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (IllegalAccessException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        }
 		//creer une instance JFrame 
 		frame = new JFrame("Fenetre connexion");
         //sortir quand l’utilisateur ferme le frame
@@ -43,8 +61,19 @@ public class FenetreConnexion implements ActionListener {
         frame.setSize(new Dimension(120, 40));
         //Creer le JPanel
         panel = new JPanel(new GridLayout(4,1));
+        panel.setOpaque(false);
         //Ajouter les elements 
         this.addWidgets();
+        try {
+            final Image backgroundImage = javax.imageio.ImageIO.read(new File("b1.jpg"));
+            frame.setContentPane(new JPanel(new BorderLayout()) {
+                @Override public void paintComponent(Graphics g) {
+                    g.drawImage(backgroundImage, 0, 0, null);
+                }
+            });
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
         //Set the default button.
         frame.getRootPane().setDefaultButton(Connexion);
         //Ajouter le panel a la window
@@ -61,6 +90,8 @@ public class FenetreConnexion implements ActionListener {
         this.pseudofield = new JTextField(2); 
         // creation d'un label qui contiendra un txt au centre
         this.Text = new JLabel("Type your login", SwingConstants.CENTER); 
+        this.Text.setForeground(Color.white);
+        this.Text.setOpaque(false);
         //Ajout d'un bouton Connexion 
         this.Connexion = new JButton("Connexion");
         this.Cancel = new JButton("Cancel");
@@ -107,7 +138,12 @@ public class FenetreConnexion implements ActionListener {
    				new FenetreConnexion();
    			 }
    		 }else if(loginEstActif){
-   			if(!Connexion.isSelected()) {
+   			try {
+				Thread.sleep(1000);
+			} catch (InterruptedException e) {
+				e.printStackTrace();
+			}
+   			if(!Connexion.isSelected() && !FenetreMenu.ouvert) {
 	   			JOptionPane.showMessageDialog(frame, "This login is used by an active user", "Error", JOptionPane.WARNING_MESSAGE) ;
 	   			Connexion.setSelected(true);
 				frame.dispose();

chatGitElise/src/gui/FenetreInscription.java

@@ -1,8 +1,11 @@
 package gui;
 
 import java.awt.BorderLayout;
+import java.awt.Color;
 import java.awt.Dimension;
+import java.awt.Graphics;
 import java.awt.GridLayout;
+import java.awt.Image;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 
@@ -13,10 +16,12 @@ import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
 import javax.swing.SwingConstants;
+import javax.swing.UIManager;
 import javax.swing.JOptionPane;
 
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.io.File;
 import java.io.IOException;
 
 import controller.*;
@@ -37,6 +42,19 @@ public class FenetreInscription implements ActionListener {
      * Cette fenetre sera munie d'un bouton de connexion et d'une zone de saisie de pseudo.
      */
     public FenetreInscription() {
+    	try {
+            //here you can put the selected theme class name in JTattoo
+            UIManager.setLookAndFeel("com.jtattoo.plaf.noire.NoireLookAndFeel");
+ 
+        } catch (ClassNotFoundException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (InstantiationException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (IllegalAccessException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
+            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        }
 		//creer une instance JFrame 
 		frame = new JFrame("Fenetre inscription");
         //sortir quand l’utilisateur ferme le frame
@@ -45,8 +63,19 @@ public class FenetreInscription implements ActionListener {
         frame.setSize(new Dimension(40, 100));
         //Creer le JPanel
         panel = new JPanel(new GridLayout(7,1));
+        panel.setOpaque(false);
         //Ajouter les elements 
         this.addWidgets();
+        try {
+            final Image backgroundImage = javax.imageio.ImageIO.read(new File("b1.jpg"));
+            frame.setContentPane(new JPanel(new BorderLayout()) {
+                @Override public void paintComponent(Graphics g) {
+                    g.drawImage(backgroundImage, 0, 0, null);
+                }
+            });
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
         frame.getRootPane().setDefaultButton(inscription);
         //Ajouter le panel a la window
         frame.getContentPane().add(panel, BorderLayout.CENTER);
@@ -63,8 +92,14 @@ public class FenetreInscription implements ActionListener {
         this.pseudofield = new JTextField(2); 
         // creation d'un label qui contiendra un txt au centre
         this.Text = new JLabel("Forbidden characters: space, '?','&', '/', '=' ", SwingConstants.CENTER); 
+        this.Text.setForeground(Color.WHITE);
+        this.Text.setOpaque(false);
         JLabel text = new JLabel("Login: ", SwingConstants.CENTER);
+        text.setForeground(Color.WHITE);
+        text.setOpaque(false);
         JLabel text2 = new JLabel("Pseudo: ", SwingConstants.CENTER);
+        text2.setForeground(Color.WHITE);
+        text2.setOpaque(false);
         //Ajout d'un bouton Connexion 
         this.inscription = new JButton("Sign Up");
         this.connexion = new JButton("Sign In");

chatGitElise/src/gui/FenetreMenu.java

@@ -5,9 +5,12 @@ import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.Graphics;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
 import java.awt.GridLayout;
 import java.awt.HeadlessException;
 import java.awt.Image;
+import java.awt.Insets;
 import java.awt.SystemColor;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
@@ -32,6 +35,7 @@ import javax.swing.JScrollPane;
 import javax.swing.JTextArea;
 import javax.swing.JTextField;
 import javax.swing.SwingConstants;
+import javax.swing.UIManager;
 
 import controller.Agent;
 import model.Contact;
@@ -45,6 +49,7 @@ public class FenetreMenu {
     JLabel jlabel;
     JLabel texte;
     JLabel liste;
+    JLabel vide;
     static JComboBox cb;
     WindowAdapter wa ;
     
@@ -53,10 +58,24 @@ public class FenetreMenu {
     public FenetreMenu(Agent agent) throws IOException {
     	FenetreMenu.ouvert=true;
     	this.agent = agent;
+    	    try {
+    	            //here you can put the selected theme class name in JTattoo
+    	            UIManager.setLookAndFeel("com.jtattoo.plaf.noire.NoireLookAndFeel");
+    	 
+    	        } catch (ClassNotFoundException ex) {
+    	            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    	        } catch (InstantiationException ex) {
+    	            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    	        } catch (IllegalAccessException ex) {
+    	            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    	        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
+    	            java.util.logging.Logger.getLogger(FenetreMenu.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    	        }
     	frame = new JFrame("Fenêtre menu");
 		frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
 		
-		 frame.setSize(new Dimension(500, 800));
+		 frame.setSize(new Dimension(600, 800));
+		 frame.setResizable(false);
 		 
 		 wa = new WindowAdapter(){
 	            public void windowClosing(WindowEvent e){
@@ -77,14 +96,14 @@ public class FenetreMenu {
 	        frame.addWindowListener(wa); 
 	        menu = new JMenuBar();
 	        //Creation d'un JPanel
-	    	panel = new JPanel(new GridLayout(3,1));
+	    	panel = new JPanel(new GridBagLayout());
 	    	panel.setForeground(SystemColor.menuText);
 	    	panel.setOpaque(false);
 	    	// Ajouter tout les elements a la fenetre
 	        this.addWidgets();
 	        
 	        try {
-                final Image backgroundImage = javax.imageio.ImageIO.read(new File("background.jpg"));
+                final Image backgroundImage = javax.imageio.ImageIO.read(new File("background2.jpg"));
                 frame.setContentPane(new JPanel(new BorderLayout()) {
                     @Override public void paintComponent(Graphics g) {
                         g.drawImage(backgroundImage, 0, 0, null);
@@ -119,19 +138,29 @@ public class FenetreMenu {
         liste = new JLabel("Active users", JLabel.LEFT);
         liste.setOpaque(false);
 	 	
+        vide = new JLabel();
+        vide.setOpaque(false);
+        
+        Color c = new Color(25, 94, 125);
+        
 	 	JMenu contenu = new JMenu("Actions");
-	 	contenu.setForeground(Color.BLUE);
+	 	contenu.setForeground(Color.WHITE);
+	 	contenu.setBackground(c.darker());
 	 	contenu.setHorizontalAlignment(SwingConstants.CENTER);
     
 	 	//JMenuItem usersActifs = new JMenuItem("Active users");
 	 	JMenuItem modifierPseudo = new JMenuItem("Modify your pseudo");
+	 	modifierPseudo.setBackground(c.darker());
+	 	modifierPseudo.setForeground(Color.WHITE);
 	    JMenuItem deco = new JMenuItem("Deconnection");
+	    deco.setBackground(c.darker());
+	    deco.setForeground(Color.WHITE);
 	    
 	    //contenu.add(usersActifs);  
 	    contenu.add(modifierPseudo);
 	    contenu.add(deco);
 	    
-	    
+	    menu.setBackground(c);
 	    menu.add(contenu);
 	    frame.setJMenuBar(menu);
 	    
@@ -150,6 +179,10 @@ public class FenetreMenu {
    		 }
 		
 		cb = new JComboBox(v);
+		cb.setSelectedItem(agent.getUser().getPseudo());
+		cb.setBackground(c);
+		cb.setForeground(Color.WHITE);
+		cb.setFocusable(false);
   	    cb.addActionListener(new ActionListener() {
   	    	public void actionPerformed(ActionEvent event) {
                 Object selected = cb.getSelectedItem();
@@ -169,11 +202,29 @@ public class FenetreMenu {
 
             }
   	    });
+  	    cb.setPreferredSize(new Dimension(500, 30));
   	    
   	    
-	  	  panel.add(BorderLayout.CENTER, jlabel);
+  	    GridBagConstraints con = new GridBagConstraints();
-	  	  panel.add(BorderLayout.SOUTH , texte );
+  	    Insets i = new Insets(150, 0, 5, 0);
-	  	  panel.add(BorderLayout.WEST, cb);
+	  	con.weightx = 200;
+	  	con.gridx = 1;
+	  	con.gridy = 0;
+	  	 
+	  	panel.add(jlabel, con);
+	  	
+	  	con.weightx = 100;
+	  	con.gridx=1;
+	  	con.gridy=1;
+	  	panel.add(texte, con);
+	  	
+	  	
+	  	con.weightx=50;
+	  	con.fill = GridBagConstraints.HORIZONTAL;
+	  	con.gridx=1;
+	  	con.gridy = 3;
+	  	con.insets = i;
+	  	panel.add(cb, con);
 	  	  
 	  	  
 	  	

chatGitElise/src/gui/SmartScroller.java

@@ -0,0 +1,173 @@
+package gui;
+import java.awt.Component;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.swing.text.*;
+
+/**
+ *  The SmartScroller will attempt to keep the viewport positioned based on
+ *  the users interaction with the scrollbar. The normal behaviour is to keep
+ *  the viewport positioned to see new data as it is dynamically added.
+ *
+ *  Assuming vertical scrolling and data is added to the bottom:
+ *
+ *  - when the viewport is at the bottom and new data is added,
+ *    then automatically scroll the viewport to the bottom
+ *  - when the viewport is not at the bottom and new data is added,
+ *    then do nothing with the viewport
+ *
+ *  Assuming vertical scrolling and data is added to the top:
+ *
+ *  - when the viewport is at the top and new data is added,
+ *    then do nothing with the viewport
+ *  - when the viewport is not at the top and new data is added, then adjust
+ *    the viewport to the relative position it was at before the data was added
+ *
+ *  Similiar logic would apply for horizontal scrolling.
+ */
+public class SmartScroller implements AdjustmentListener
+{
+	public final static int HORIZONTAL = 0;
+	public final static int VERTICAL = 1;
+
+	public final static int START = 0;
+	public final static int END = 1;
+
+	private int viewportPosition;
+
+	private JScrollBar scrollBar;
+	private boolean adjustScrollBar = true;
+
+	private int previousValue = -1;
+	private int previousMaximum = -1;
+
+	/**
+	 *  Convenience constructor.
+	 *  Scroll direction is VERTICAL and viewport position is at the END.
+	 *
+	 *  @param scrollPane the scroll pane to monitor
+	 */
+	public SmartScroller(JScrollPane scrollPane)
+	{
+		this(scrollPane, VERTICAL, END);
+	}
+
+	/**
+	 *  Convenience constructor.
+	 *  Scroll direction is VERTICAL.
+	 *
+	 *  @param scrollPane the scroll pane to monitor
+	 *  @param viewportPosition valid values are START and END
+	 */
+	public SmartScroller(JScrollPane scrollPane, int viewportPosition)
+	{
+		this(scrollPane, VERTICAL, viewportPosition);
+	}
+
+	/**
+	 *  Specify how the SmartScroller will function.
+	 *
+	 *  @param scrollPane the scroll pane to monitor
+	 *  @param scrollDirection indicates which JScrollBar to monitor.
+	 *                         Valid values are HORIZONTAL and VERTICAL.
+	 *  @param viewportPosition indicates where the viewport will normally be
+	 *                          positioned as data is added.
+	 *                          Valid values are START and END
+	 */
+	public SmartScroller(JScrollPane scrollPane, int scrollDirection, int viewportPosition)
+	{
+		if (scrollDirection != HORIZONTAL
+		&&  scrollDirection != VERTICAL)
+			throw new IllegalArgumentException("invalid scroll direction specified");
+
+		if (viewportPosition != START
+		&&  viewportPosition != END)
+			throw new IllegalArgumentException("invalid viewport position specified");
+
+		this.viewportPosition = viewportPosition;
+
+		if (scrollDirection == HORIZONTAL)
+			scrollBar = scrollPane.getHorizontalScrollBar();
+		else
+			scrollBar = scrollPane.getVerticalScrollBar();
+
+		scrollBar.addAdjustmentListener( this );
+
+		//  Turn off automatic scrolling for text components
+
+		Component view = scrollPane.getViewport().getView();
+
+		if (view instanceof JTextComponent)
+		{
+			JTextComponent textComponent = (JTextComponent)view;
+			DefaultCaret caret = (DefaultCaret)textComponent.getCaret();
+			caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
+		}
+	}
+
+	@Override
+	public void adjustmentValueChanged(final AdjustmentEvent e)
+	{
+		SwingUtilities.invokeLater(new Runnable()
+		{
+			public void run()
+			{
+				checkScrollBar(e);
+			}
+		});
+	}
+
+	/*
+	 *  Analyze every adjustment event to determine when the viewport
+	 *  needs to be repositioned.
+	 */
+	private void checkScrollBar(AdjustmentEvent e)
+	{
+		//  The scroll bar listModel contains information needed to determine
+		//  whether the viewport should be repositioned or not.
+
+		JScrollBar scrollBar = (JScrollBar)e.getSource();
+		BoundedRangeModel listModel = scrollBar.getModel();
+		int value = listModel.getValue();
+		int extent = listModel.getExtent();
+		int maximum = listModel.getMaximum();
+
+		boolean valueChanged = previousValue != value;
+		boolean maximumChanged = previousMaximum != maximum;
+
+		//  Check if the user has manually repositioned the scrollbar
+
+		if (valueChanged && !maximumChanged)
+		{
+			if (viewportPosition == START)
+				adjustScrollBar = value != 0;
+			else
+				adjustScrollBar = value + extent >= maximum;
+		}
+
+		//  Reset the "value" so we can reposition the viewport and
+		//  distinguish between a user scroll and a program scroll.
+		//  (ie. valueChanged will be false on a program scroll)
+
+		if (adjustScrollBar && viewportPosition == END)
+		{
+			//  Scroll the viewport to the end.
+			scrollBar.removeAdjustmentListener( this );
+			value = maximum - extent;
+			scrollBar.setValue( value );
+			scrollBar.addAdjustmentListener( this );
+		}
+
+		if (adjustScrollBar && viewportPosition == START)
+		{
+			//  Keep the viewport at the same relative viewportPosition
+			scrollBar.removeAdjustmentListener( this );
+			value = value + maximum - previousMaximum;
+			scrollBar.setValue( value );
+			scrollBar.addAdjustmentListener( this );
+		}
+
+		previousValue = value;
+		previousMaximum = maximum;
+	}
+}