JTextPane is not showing the messages when the window is in Iconified state

Jaheer Abbas Syed

Greenhorn

Posts: 3

posted 8 years ago

when the JFrame(window) is in Iconified state and when i try to add text to JTextPane using setText().it is added to the JTextPane but it is not showing the message when i maximize the window.if the window(JFrame) is in maximized state(DeIconified state) and i try to add text then the message is added and visible in JTextPane.

How can i make the JTextPane show the messages when it is minimized.
please help me out....
thank you...

Here is my Code.

[MG Added code tags]
[ November 19, 2008: Message edited by: Maneesh Godbole ]

Maneesh Godbole

Bartender

Posts: 11445

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posted 8 years ago

Jaheer,

In future, while posting code snippets, please do use code tags. I have added them for you this time. As you can see it makes the code more readable and easier to understand.

Have you added all your child components to the parent before calling the setVisible() on the frame? Most of the times, that is the cause of the problem you are describing.

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Jaheer Abbas Syed

Greenhorn

Posts: 3

posted 8 years ago

Hi Maneesh,

i have added the child components to the JFrame before calling setVisible().
this is my complete code.one thing is the following code is working in Eclipse but not in NetBeans why.run this code and set the message when the Chat Client is in Iconified(Minimized) state and DeIconify(Maximize) the ChatClient Window and see the message.Message is not displayed and if you select the area in JTextPane with mouse then the message is displaying.

This is the code for calling ClientMain1

This is the code of ClientMain1

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.adlux.chat.client;
 
/**
 *
 * @author jsyed
 */
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
import java.util.*;
import org.netbeans.lib.awtextra.*;
 
public class ClientMain1 extends JFrame implements Runnable {
 
    Date date = new Date();
 
    /** Creates new form ClientMain */
    public ClientMain1() {
 
        initComponents();
        
    }
 
    /** This method is called from within the constructor to
     * initialize the form.
     */
    private void initComponents() {
        jLabel6 = new JLabel();
        jLabel7 = new JLabel();
        jTextField1 = new JTextField();
        jLabel8 = new JLabel();
        jButton1 = new JButton();
        jButton2 = new JButton();
        jLabel9 = new JLabel();
        jScrollPane1 = new JScrollPane();
        messages = new JTextPane();
        jLabel1 = new JLabel();
        list1 = new java.awt.List();
        jSeparator1 = new JSeparator();
        jLabel2 = new JLabel();
        jTextField2 = new JTextField();
        jButton3 = new JButton();
 
        getContentPane().setLayout(new AbsoluteLayout());
 
        setTitle("Chat Application Client");

jLabel6.setText("");
        jLabel6.setHorizontalAlignment(SwingConstants.CENTER);
        getContentPane().add(jLabel6, new AbsoluteConstraints(10, 40, 380, 20));
 
        jLabel7.setText(ChatClient.userName);
        jLabel7.setHorizontalAlignment(SwingConstants.CENTER);
        getContentPane().add(jLabel7, new AbsoluteConstraints(20, 70, 370, -1));
 
        getContentPane().add(jTextField1, new AbsoluteConstraints(160, 360, 230, -1));
 
        jLabel8.setVerticalAlignment(SwingConstants.BOTTOM);
        jLabel8.setText("Enter Private Message:");
        jLabel8.setHorizontalAlignment(SwingConstants.CENTER);
        getContentPane().add(jLabel8, new AbsoluteConstraints(20, 400, -1, -1));
        
        this.setResizable(false);
        jButton1.setText("Send All");
        jButton1.setToolTipText("Click to Send Public Message");// Code added by ABBAS
        jButton1.setMnemonic('a');
        jButton1.addActionListener(
                new ActionListener() {
 
                    public void actionPerformed(ActionEvent evt) {
                        jButton1ActionPerformed(evt);
                    }
                });
                
        Action button1Action = new AbstractAction() {
 
            public void actionPerformed(ActionEvent e) {
                //do nothing
                System.out.println("--- Send All Enter Key Pressed ---");
                jButton1ActionPerformed(e);
            }
        };
        jButton1.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "pressed");
        jButton1.getActionMap().put("pressed", button1Action);

getContentPane().add(jButton1, new AbsoluteConstraints(400, 360, 110, 20));
 
        jButton2.setText("Logout");
        jButton2.setToolTipText("Click to Logout of this Chat");// Code added by ABBAS
        jButton2.setMnemonic('l');// Code added by ABBAS
        jButton2.addActionListener(
                new ActionListener() {
 
                    public void actionPerformed(ActionEvent evt) {
                        jButton2ActionPerformed(evt);
                    }
                });
 
                 
        Action button2Action = new AbstractAction() {
 
            public void actionPerformed(ActionEvent e) {
                //do nothing
                System.out.println("--- Send All Enter Key Pressed ---");
                jButton2ActionPerformed(e);
            }
        };
        jButton2.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "pressed");
        jButton2.getActionMap().put("pressed", button2Action);
 
        
        getContentPane().add(jButton2, new AbsoluteConstraints(420, 20, -1, -1));
 
        jLabel9.setText("Users");
        jLabel9.setHorizontalAlignment(SwingConstants.CENTER);
        getContentPane().add(jLabel9, new AbsoluteConstraints(400, 70, 110, -1));
 
        jScrollPane1.setAutoscrolls(true);
 
        messages.setEditable(false);
        jScrollPane1.setViewportView(messages);
        messages.setContentType("text/html");

getContentPane().add(jScrollPane1, new AbsoluteConstraints(20, 100, 370, 250));
 
 jLabel1.setText("Adlux Chat Application");
 jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
 getContentPane().add(jLabel1, new AbsoluteConstraints(10, 10, 380, 20));
 
 list1.setMultipleMode(true);
 list1.addItemListener(
 new ItemListener() {
 
 public void itemStateChanged(ItemEvent evt) {
 list1ItemStateChanged(evt);
 }
 });
 
 getContentPane().add(list1, new AbsoluteConstraints(400, 100, 110, 250));
 
 getContentPane().add(jSeparator1, new AbsoluteConstraints(20, 390, 490, 10));
 
 jLabel2.setVerticalAlignment(SwingConstants.BOTTOM);
 jLabel2.setText("Enter Public Message:");
 jLabel2.setHorizontalAlignment(SwingConstants.CENTER);
 getContentPane().add(jLabel2, new AbsoluteConstraints(20, 360, -1, -1));
 
 getContentPane().add(jTextField2, new AbsoluteConstraints(160, 400, 230, -1));
 
 jButton3.setText("Send Private");
 jButton3.setToolTipText("Click to Send Private Message");// Code added by ABBAS
 jButton3.setMnemonic('p');// Code added by ABBAS
 jButton3.addActionListener(
 new ActionListener() {
 
 public void actionPerformed(ActionEvent evt) {
 jButton3ActionPerformed(evt);
 }
 });
 
 
 Action button3Action = new AbstractAction() {
 
 public void actionPerformed(ActionEvent e) {
 //do nothing
 System.out.println("--- Send All Enter Key Pressed ---");
 jButton3ActionPerformed(e);
 }
 };
 jButton3.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "pressed");
 jButton3.getActionMap().put("pressed", button3Action);
 
 
 getContentPane().add(jButton3, new AbsoluteConstraints(400, 400, 110, 20));
 
 pack();
 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
 setSize(new Dimension(535, 465));
 setLocation((screenSize.width - 535) / 2, (screenSize.height - 465) / 2);
 
 
 
 }
 
 private void list1ItemStateChanged(ItemEvent evt) {
 // Add your handling code here:
 if (list1.getSelectedItems().length == 0) {
 jTextField2.setEnabled(false);
 jButton3.setEnabled(false);
 } else {
 jTextField2.setEnabled(true);
 jButton3.setEnabled(true);
 }
 }
 
 private void jButton3ActionPerformed(ActionEvent evt) {
 // Add your handling code here: //Button for Sending Private Messages
 String[] userlist = {};
 userlist = list1.getSelectedItems();
 
 if (userlist == null) {
 } else if (!(jTextField2.getText().equals(""))) {
 
 String userNames = new String(ChatClient.userName + ",");
 
 for (int i = 0; i < userlist.length; i++) {
 userNames = userNames.concat(userlist[i] + ",");
 }
 ChatClient.sendingM.sendMessage(new Message(5, userNames, jTextField2.getText()), ChatClient.serverIP);
 
 }

jTextField2.setText("");
 jTextField2.requestFocus();
 this.setVisible(true);
 
 int selectedUsers []=list1.getSelectedIndexes(); // Code for deselecting the user
 for (int i = 0; i < list1.getSelectedIndexes().length; i++) {
 list1.deselect(selectedUsers[i]);
 
 
 }
 
 }
 
 private void jButton1ActionPerformed(ActionEvent evt) {
 // Add your handling code here: // Button for BroadCast the Message
 
 if (!(jTextField1.getText().equals(""))) {
 ChatClient.sendingM.sendMessage(new Message(3, ChatClient.userName, jTextField1.getText()), ChatClient.serverIP);
 }
 jTextField1.setText("");
 jTextField1.requestFocus();
 }
 
 private void jButton2ActionPerformed(ActionEvent evt) {
 // Add your handling code here: // Button for Logout
 ChatClient.sendingM.sendMessage(new Message(2, ChatClient.userName, ChatClient.localIP), ChatClient.serverIP);
 System.exit(0);
 }
 
 protected void processWindowEvent(WindowEvent evt) {
 if (evt.getID() == WindowEvent.WINDOW_ACTIVATED) {
 Thread listener = new Thread(this);
 listener.start();
 
 }
 
 
 
 
 }
 
 protected void processKeyEvent(KeyEvent e) {
 if (e.getID() == KeyEvent.KEY_PRESSED) {
 if (e.getKeyCode() == KeyEvent.VK_ENTER) {
 ActionEvent evt = new ActionEvent(jTextField1, ActionEvent.ACTION_PERFORMED, "");
 if (jTextField1.hasFocus()) {
 jButton1ActionPerformed(evt);
 } else if (jTextField2.hasFocus()) {
 jButton3ActionPerformed(evt);
 }
 }
 }
 }
 
 
 
 /** Exit the Application */
 private void exitForm(WindowEvent evt) {
 ChatClient.sendingM.sendMessage(new Message(2, ChatClient.userName, ChatClient.localIP), ChatClient.serverIP);
 System.exit(0);
 }
 
 public void setStyledText(Message m) {
 int k=date.getHours()+1;
 int h=12;
 int hr =(k>h)?k-h:k;
 String hour=new String();
 if(hr<10)
 hour ="0"+hr;
 else
 hour = ""+hr;
 String min = new String();
 if(date.getMinutes()<10)
 min ="0"+date.getMinutes();
 else
 min = ""+date.getMinutes();
 String time = "(" + hour + ":" + min + ((k > 12) ? " PM" : " AM") + ") ";
 String mymsg = messages.getText();
 int bodystrt = mymsg.indexOf("<body>");
 int bodyend = mymsg.indexOf("</body>");
 String body = mymsg.substring(bodystrt + 6, bodyend - 7);
 String msgs[] = body.split(" ");
 System.out.println("--- After Splitting the Message ---");
 String styledText = new String();
 for (int i = 0; i < msgs.length; i++) {
 styledText += msgs[i] + " ";
 }
 if (m.userName.equals(ChatClient.userName)) {
 messages.setText(styledText + "" + time + m.userName + ": " + m.userData);
 } else {
 if (m.userName.startsWith("Server")) {
 System.out.println("Window Active:"+this.isActive());
 if (this.getState() == 1 || this.getState()==0 || !this.isActive()) {
 this.setState(0);
 this.show();
 }
 messages.setText(styledText + "" + time + m.userName + ": " + m.userData);
 } else {
// this.setState(0);
 this.setVisible(true);
 this.show();
 messages.setText(styledText + "" + time + m.userName + ": " + m.userData); 
 
 
 
 }
 
 }
}
 
 
 public void run() {
 while (true) //!Thread.interrupted())
 {
 m = ChatClient.recievingM.recieveMessage(); // m = message received
 
 if (m.packetType == 3) // received message packet
 {
 System.out.println("UserName:" + m.userName + " User Data:" + m.userData);
 setStyledText(m);// Code added by ABBAS
 // make scrollbar scroll automatically
 JScrollBar sc = new JScrollBar();
 sc = jScrollPane1.getVerticalScrollBar();
 sc.setMaximum(sc.getMaximum() + 1);
 sc.setValue(sc.getMaximum());
 jScrollPane1.setVerticalScrollBar(sc);
 } else if (m.packetType == 4) // received update packet
 {
 StringTokenizer token = new StringTokenizer(m.userData, ",");
 Vector userlist = new Vector();
 
 for (int i = 0; token.hasMoreTokens(); i++) {
 userlist.addElement(token.nextToken());
 }
 list1.removeAll();
 
 for (int i = 0; i < userlist.size(); i++) {
 list1.add((String) userlist.get(i));
 }
 } else if (m.packetType == 5) // received private message packet
 {
 setStyledText(m);
 // make scrollbar scroll automatically
 JScrollBar sc = new JScrollBar();
 sc = jScrollPane1.getVerticalScrollBar();
 sc.setMaximum(sc.getMaximum() + 1);
 sc.setValue(sc.getMaximum());
 jScrollPane1.setVerticalScrollBar(sc);
 }
 }
 }
 /**
 * @param args the command line arguments
 */
 private Message m = new Message();
 // Variables declaration - do not modify 
 private JLabel jLabel6;
 private JLabel jLabel7;
 private JTextField jTextField1;
 private JLabel jLabel8;
 private JButton jButton1;
 private JButton jButton2;
 private JLabel jLabel9;
 private JScrollPane jScrollPane1;
 private JTextPane messages;
 private JLabel jLabel1;
 private java.awt.List list1;
 private JSeparator jSeparator1;
 private JLabel jLabel2;
 private JTextField jTextField2;
 private JButton jButton3;
 // End of variables declaration 
}

Rob Spoor

Sheriff

Posts: 21092

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posted 8 years ago

Please Use One Thread Per Question. This is basically the same problem as this one. I've closed that one since this has more information.

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It is sorta covered in the JavaRanch Style Guide.

JTextPane is not showing the messages when the window is in Iconified state

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