Re: JSplitPane resize woes

From:
vicky.lalit@gmail.com
Newsgroups:
comp.lang.java.gui
Date:
Tue, 2 Apr 2013 22:55:09 -0700 (PDT)
Message-ID:
<677c5cd9-ccee-413e-9e3f-9827c37e76f5@googlegroups.com>
Hi Experts,

I have an issue with my JSpiltPane. Below is the code snippet.
Problem is I have one panel added in Right side of the Spilt Pane, and that Panel has many components like Label,TextArea,Panel,Checkbox etc. And this panel is itself a Titled Border Panel.

When I am maximizing my screen, the Right side panel is not resizing. I tried a lot with the layouts but no Luck.

Would be great if someone can help me on this.

------------------------

import javax.swing.JFrame;

/*
 * GridBagLayoutDemo.java requires no other files.
 */

import java.awt.*;

import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.Border;
import javax.swing.border.TitledBorder;

class SplitPane
extends JFrame
{
        private JSplitPane splitPaneV;
        private JSplitPane splitPaneH;
        private JPanel panel1;
        private JPanel panel2;
        private JPanel panel3;

        public SplitPane()
        {
        setTitle( "Split Pane Application" );
        //setBackground( Color.gray );

        JPanel topPanel = new JPanel();
        topPanel.setLayout( new BorderLayout() );
        getContentPane().add( topPanel );

        // Create the panels
        createPanel1();
        createPanel2();
        //createPanel3();

        // Create a splitter pane
       // splitPaneV = new JSplitPane( JSplitPane.VERTICAL_SPLIT );
        //topPanel.add( splitPaneV, BorderLayout.CENTER );
        
         JPanel main = new JPanel();
         main.setLayout(new GridBagLayout());
         GridBagConstraints gbc = new GridBagConstraints();
         gbc.anchor = GridBagConstraints.NORTHWEST;
         gbc.fill = GridBagConstraints.BOTH;
         gbc.weightx = 0.5;
         gbc.gridx = 0;
         gbc.gridy = 0;
         gbc.insets = new Insets(5, 5, 0, 0);
         JPanel acGlobalPlanel = panel2;
         main.add(acGlobalPlanel,gbc);

        JPanel currentPanel = new JPanel();
        currentPanel.setLayout(new BorderLayout());
        /*currentPanel.setLayout(new GridBagLayout());
        GridBagConstraints g = new GridBagConstraints();
        g.anchor = GridBagConstraints.CENTER;
        g.fill = GridBagConstraints.BOTH;
        g.weightx = 100;
        g.weighty = 100;
        g.gridx = 0;
        g.gridy = 0;*/
        
        
        

         
        splitPaneH = new JSplitPane( JSplitPane.HORIZONTAL_SPLIT,panel1,currentPanel );
        splitPaneH.setContinuousLayout(true);
        splitPaneH.setPreferredSize( new Dimension(600,600));
        topPanel.add( splitPaneH, BorderLayout.CENTER );

        JPanel curr = (JPanel)splitPaneH.getRightComponent();
        curr.add(main, BorderLayout.CENTER);
        //currentPanel.add(main, BorderLayout.CENTER);
        /*currentPanel.validate();
        currentPanel.repaint();*/

        Border matteBorder = BorderFactory.createMatteBorder(1, 0, 0, 0,
                SystemColor.controlDkShadow);
        Border titledBorder = BorderFactory.createTitledBorder(matteBorder,
                  "Circuit Attributes",
                  TitledBorder.LEFT,
                  TitledBorder.ABOVE_TOP);
        currentPanel.setBorder(titledBorder);
        currentPanel.revalidate();
        currentPanel.repaint();

        //splitPaneV.setLeftComponent( splitPaneH );
        //splitPaneV.setResizeWeight(0.333);
        //splitPaneV.setContinuousLayout(true);
        //splitPaneV.setOneTouchExpandable(true);

        //splitPaneV.setRightComponent( panel3 );
        pack();
        setLocationRelativeTo(getOwner());
        }

        public void createPanel1()
        {
        panel1 = new JPanel();
        panel1.setLayout( new GridBagLayout() );
        GridBagConstraints gc = new GridBagConstraints();
        gc.anchor = GridBagConstraints.CENTER;
        gc.fill = GridBagConstraints.VERTICAL;
        gc.gridx = 0;
        gc.gridy = 0;
        gc.insets = new Insets(10, 7, 0, 7);

        // Add some buttons
        panel1.add( new JButton( "First" ), gc );
        
        gc.gridx = 0;
        gc.gridy = 1;
        panel1.add( new JButton( "Second" ), gc );

        gc.gridx = 0;
        gc.gridy = 2;
        panel1.add( new JButton( "Third" ), gc );

        gc.gridx = 0;
        gc.gridy = 3;
        panel1.add( new JButton( "Fourth" ), gc );

        gc.gridx = 0;
        gc.gridy = 4;
        panel1.add( new JButton( "Fifth" ), gc );

        }

        public void createPanel2()
        {
            panel2 = new JPanel();
            panel2.setBorder(new TitledBorder("Global Attributes"));
            panel2.setLayout(new GridBagLayout());

            GridBagConstraints gbc = new GridBagConstraints();

            gbc.anchor = GridBagConstraints.NORTHWEST;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.gridx = 0;
            gbc.gridy = 0;
            gbc.insets = new Insets(10, 7, 0, 7);
            
            VpslNameAttr vpslNameAttr = new VpslNameAttr();
            panel2.add(vpslNameAttr.getUI(),gbc);

            gbc.gridx = 0;
            gbc.gridy = 1;

            VPNIdAttr vplsDescAttr = new VPNIdAttr();
            panel2.add(vplsDescAttr.getUI(),gbc);

        }

        public void createPanel3()
        {
        panel3 = new JPanel();
        panel3.setLayout( new BorderLayout() );
        panel3.setPreferredSize( new Dimension( 600, 400 ) );
        panel3.setMinimumSize( new Dimension( 600, 400 ) );

        panel3.add( new JLabel( "Notes:" ), BorderLayout.NORTH );
        panel3.add( new JTextArea(), BorderLayout.CENTER );
        }

        public static void main( String args[] )
        {
        // Create an instance of the test application
        SplitPane mainFrame = new SplitPane();
        mainFrame.setSize(600, 400);
        mainFrame.setVisible( true );
        }
}

class VpslNameAttr {

    JTextField pwNameTF;

    private JPanel p;

    VpslNameAttr() {
        p = new JPanel();
        //p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));
        p.setLayout( new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.anchor = GridBagConstraints.CENTER;
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 10000;
        gbc.gridheight = 10000;
        p.add(new JLabel("Name: "),gbc);
        
        //p.add(new JLabel("Name: "));
        pwNameTF = new JTextField();
        pwNameTF.setPreferredSize(new Dimension(130, 20));
        gbc.anchor = GridBagConstraints.CENTER;
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 1;
        gbc.gridy = 0;
        gbc.gridwidth = 10000;
        gbc.gridheight = 10000;
        p.add(pwNameTF,gbc);
        //p.add(pwNameTF);
    }

    public JPanel getUI() {
        return p;
    }

    public String getPWName() {
        return pwNameTF.getText();
    }
}

class VPNIdAttr {

    TextField vpnIdAttrTF;

    private JPanel p;

    VPNIdAttr()
    {
        p = new JPanel();
        //p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));
        
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.anchor = GridBagConstraints.CENTER;
        gbc.fill = GridBagConstraints.NONE;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 100;
        gbc.gridheight = 100;
        
        p.add(new JLabel("VPN ID: "),gbc);
        
        //p.add(new JLabel("VPN ID: "));
        
        vpnIdAttrTF = new TextField(15);
        vpnIdAttrTF.setPreferredSize(new Dimension(130, 20));
        
        gbc.anchor = GridBagConstraints.CENTER;
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 1;
        gbc.gridy = 0;
        gbc.gridwidth = 100;
        gbc.gridheight = 100;
        p.add(vpnIdAttrTF,gbc);
        //p.add(vpnIdAttrTF);
    }

    public JPanel getUI() {
        return p;
    }

    public String getVPNId() {
        return vpnIdAttrTF.getText();
    }
}

--------------------------------------------------

On Thursday, November 25, 2004 5:41:24 AM UTC+5:30, Larry Coon wrote:

I've reduced my problem to a short, self-contained example,
below. I have a JFrame that has a JSplitPane, that has a
JTree (left) and JTextArea (right). I can't get resize
behavior to work correctly. I've tried many combinations of
setting minimum size & preferred size on each/all of the
components, but nothing did what I wanted. Here's a minimal
example:

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

public class SplitPaneDemo extends JFrame {
  public SplitPaneDemo() {
    super("Split Pane Demo");

    Container container = getContentPane();
    JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
    splitPane.setLeftComponent(new JTree());

    JTextArea textArea = new JTextArea();
    splitPane.setRightComponent(textArea);
    textArea.setLineWrap(true);

    container.add(splitPane, BorderLayout.CENTER);

    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setSize(500, 500);
    setVisible(true);
  }

  public static void main(String[] args) {
    new SplitPaneDemo();
  }
}

If I dont setLineWrap(true) then I can move the JSplitPane's
separator bar correctly. As it is here, I can move it left,
but not right. It seems like the JTextArea is resizable
bigger, but not smaller, when LineWrap is true.

My actual program is a lot more involved (the right hand side
is a JTextArea in a JPanel (along with other components) on
a JTabbedField on the right hand side of the JSplitPane), but
I'm obviously missing something basic. What's the CORRECT
way to get the above working correctly?

Thanks.

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