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problem with JList, JSplitPane and JScrollPane

  Asked By: Ryan    Date: Sep 18    Category: Java    Views: 1578
  

I design my user interface manually coz I didnt have any gui builder
tools :)

When I use JScrollPane inside JSplitPane, I notice that when I type in
JTextArea, it didnt show the scrollbar. But when I try to resize the
are by dragging split pane, i can see the scrollbar...but it didnt do
correctly like I want. can someone recommended to me what I have to do
?

second question, how to make the size of JList constant ?
when I insert the data into list (for example String[] data={"one",
"two","three"} .. the width of the JList reduced ..... i didnt like
this ... can someone tell me how to overcome this problem ?

and here is the code

import javax.swing.*;
import java.awt.* ;
import java.awt.event.*;
import javax.swing.ImageIcon;

public class GUI {

public static void main(String[] args) {
myFrame frame = new myFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.show();
}
}


class myFrame extends JFrame
{
public myFrame(){
setTitle(title);
setSize(WIDTH, HEIGHT);

Container contentPane = getContentPane() ;

viewPane = new JTextArea();
viewPane.setPreferredSize(new Dimension(300,350));
JScrollPane viewPaneScroller = new JScrollPane(viewPane);

peopleList = new JList();
peopleList.setPreferredSize(new Dimension(20,350));
peopleList.setMinimumSize(new Dimension(30,350));
JScrollPane peopleListScroller = new
JScrollPane(peopleList);

JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
viewPaneScroller, peopleListScroller);
sp.setOneTouchExpandable(true);
sp.setDividerLocation(400);

JPanel northPanel = new JPanel();
northPanel.setLayout(new FlowLayout(FlowLayout.LEFT));

northPanel.add(sp);
contentPane.add(northPanel, BorderLayout.NORTH);

messageField = new JTextField(40);
ImageIcon sendIcon = new ImageIcon(getIconDir()+"send.gif")
;
sendButton = new JButton("Send", sendIcon);

JPanel southPanel = new JPanel();
southPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
southPanel.add(messageField);
southPanel.add(sendButton);

contentPane.add(southPanel, BorderLayout.SOUTH);

}


private static String getIconDir() {
return iconDir;
}


private static String getEmoticonsDir() {
return emoticonsDir;
}


private static final String title = "myRoom";
public static final int WIDTH = 800 ;
public static final int HEIGHT = 600 ;
private JButton sendButton ;
private JTextField messageField ;
private JList peopleList ;
private JTextArea viewPane ;

private static final String iconDir = "icons/";
private static final String emoticonsDir = "emoticons/";
}

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