Re: Text component not fo

On 22 Mrz., 14:38, Andrew Thompson <andrewtho...@gmail.com> wrote:


OK that was a little dirty... try #3:

Hope this works now...

Karsten

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

import java.awt.*;
import java.awt.event.*;
import java.util.*;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;

public class JChatsTabbedPane extends JTabbedPane
implements ChangeListener, ContainerListener
{
    public static void main(String[] strArgs)
    {
        JFrame frm = new JFrame("Tab selection text pane focus test");
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frm.setSize(600, 480);

        final int MAX = 5;
        final JChatsTabbedPane ctp = new JChatsTabbedPane();
        frm.getContentPane().add(ctp);

        //build menu
        JMenuBar mb = new JMenuBar();

        JMenu mn = new JMenu("Menu");

        //add tab
        Action actAdd =
            new AbstractAction("Add tab")
            {
                public void actionPerformed(ActionEvent e)
                {
                    int tc = ctp.getTabCount();

                    if ( tc < MAX )
                    {
                        JChatPanel cp = new JChatPanel(tc);
                        ctp.addTab("i = " + tc, null, cp, "tip");
                    }
                }
            };

        mn.add(new JMenuItem(actAdd));
        mn.addSeparator();

        //remove tabs
        for ( int i = 0 ; i < MAX ; i++ )
        {
            Action actRem =
                new AbstractAction("Remove tab #" + (i + 1))
                {
                    public void actionPerformed(ActionEvent e)
                    {
                        int tc = ctp.getTabCount();

                        String str = e.getActionCommand();
                        //hack: char '0' is int 48
                        int index = str.charAt(str.length() - 1) - 48;

                        if ( tc > 0 )
                        {
                            ctp.removeTabAt(index);
                        }
                    }
                };

            //actRem.setProp("Remove tab " + i);
            JMenuItem mi = new JMenuItem(actRem);
            //mi.setName("Remove tab " + i);

            mn.add(mi);
        }

        mb.add(mn);

        frm.setJMenuBar(mb);
        frm.setVisible(true);
    }

    public JChatsTabbedPane()
    {
        //add change listener to selection model
        getModel().addChangeListener(this);
        addContainerListener(this);
    }

    public void stateChanged(ChangeEvent ce)
    {
        System.out.println("selection stateChanged");

        final SingleSelectionModel ssm = getModel();
        int tc = getTabCount();

        //one tab is displayed when chat list empty,
        //so there's always a selected index
        if ( tc > 0 )
        {
            int index = ssm.getSelectedIndex();

            System.out.println("Selected index is " + index);

            if ( index >= tc )
            {
                return;
            }

            //valid index...
            JChatPanel cp = (JChatPanel)getComponentAt(index);

            System.out.println("Requesting focus on "
                               + getTitleAt(index));

            JTextComponent tcUserMessage =
                cp.getUserMessageTextComponent();

            //request focus on user message text component
            tcUserMessage.requestFocus();

            /*Document doc = tcUserMessage.getDocument();

            try
            {
                //prove we the right text component
                doc.insertString(doc.getEndPosition().getOffset(),
                                 "" + index, null);
            }
            catch ( Exception e )
            {
                e.printStackTrace();
            }*/
        }

    }

    public void componentAdded(ContainerEvent ce)
    {
        //System.out.println("componentAdded");
    }

    public void componentRemoved(ContainerEvent ce)
    {
        //System.out.println("componentRemoved");
        //stateChanged(null);
    }

//inner class building the panels, not interesting!
public static class JChatPanel extends JPanel
{ //too lazy to indent!

    private final JTextComponent tcUserMessage;

    public JChatPanel(int i)
    {
        super(new BorderLayout());

        String str = "Welcome to chat " + i + "!\n"
                     + "\n"
                     + "specialk > hello\n"
                     + "agentk > hi specialk\n";

        //chat messages text pane
        JTextComponent tcChatMessages = new JTextPane();
        tcChatMessages.setText(str);
        tcChatMessages.setEditable(false);

        //user message text pane
        tcUserMessage = new JTextField( "panel index = " + i
                                       + ": user writes here");

        //chat messages scroller
        JScrollPane scrChatMessages = new JScrollPane();
        scrChatMessages.setViewportView(tcChatMessages);

        //user list
        JScrollPane scrUserList = new JScrollPane();
        scrUserList.setViewportView(new JList());

        //chat split pane
        JSplitPane splChat = new JSplitPane();
        splChat.setLeftComponent(scrChatMessages);
        splChat.setResizeWeight(0.8);
        splChat.setRightComponent(scrUserList);
        splChat.setEnabled(true);

        //main horizontal divider split pane
        JSplitPane splMain = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
                                            true);
        splMain.setResizeWeight(0.9);
        splMain.setLeftComponent(splChat);
        splMain.setRightComponent(null); //divider not movable

        final JComponent cmpMain;

        //user messages view
        cmpMain = new JPanel(new BorderLayout());
        cmpMain.add(splMain);
        cmpMain.add(tcUserMessage, BorderLayout.SOUTH);

        //add
        add(cmpMain);
    }

    public JTextComponent getUserMessageTextComponent()
    {
        return tcUserMessage;
    }

}
}