[zell_ffhut]

Hello

Im trying to make a GUI for a docking control program. It comprises of 4 text boxes at the top, then 8 buttons under these.

The text boxes have to be done using a BoxLayout, and the buttons using a GridBagLayout. They must then both be put in a JPanel.


Now here it the problem..

I have got the text boxes sorted, and have been doing a lot of reading on how to make GridBagLayouts. I think the code I have should have the layout made. I belive the problem is that the GridBagLayout is hiding somwhere behind the panel I wish to put it on.

I have tried a few ways of putting the GridBagLayout on the panel, but it isn't having any of it!

Any help would be great Thanks


Here is a mock up of the layout i want

-----------------------------------------------------
| Text Box 1										|
|---------------------------------------------------|
| Text Box 2										|
|---------------------------------------------------|
| Text Box 3										|
|---------------------------------------------------|
| Text Box 4										|
|---------------------------------------------------|
| Button			 | Button  | Button  | Button   |
|---------------------------------------------------|
| Button			 | Button  | Button			 |
|------------------------------|					|
| Button					   |					|
|---------------------------------------------------|

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.color.*;
import java.applet.Applet;

public class GUI extends Applet
{
	JFrame frame;
	
	// TEXT FIELDS
	JTextField seaShipsID;
	JTextField queueShipsID;
	JTextField dockShipsID;
	JTextField shipMessages;
	
	// BUTTONS
	JButton dockFromSea;
	JButton dockFromQueue;
	JButton setSail;
	JButton queue;
	JButton admit;
	JButton dequeue;
	JButton refuse;
	JButton bye;
	
	// PANELS
	JPanel textFieldPanel; 
	JPanel mainPanel;
	
	// GRID BAG LAYOUT
	GridBagLayout buttonLayout;
	GridBagConstraints buttonConstraints;
	
	public static void main(String[] args)
	{
		GUI gui = new GUI();
		gui.go();
	}
	  
	public void go()
	{
		frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
		
		buttonLayout = new GridBagLayout();
		buttonConstraints = new GridBagConstraints();
		
		textFieldPanel = new JPanel();
		textFieldPanel.setBackground(Color.lightGray);
		textFieldPanel.setLayout(new BoxLayout(textFieldPanel, BoxLayout.Y_AXIS));	   
		
		mainPanel = new JPanel();
		mainPanel.setBackground(Color.lightGray);
		mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.X_AXIS));	   
		
		// BUTTONS					  
		dockFromSea = new JButton("Dock From Sea");
		dockFromQueue = new JButton("Dock From Queue");
		setSail = new JButton("Set Sail");
		queue = new JButton("Queue");
		admit = new JButton("Admit");
		dequeue = new JButton("Dequeue");
		refuse = new JButton("Refuse");
		bye = new JButton("Bye");
		
		// BUTTON LAYOUT
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(dockFromSea, 0,0,2,1);
		
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(queue, 0,2,1,1);
		
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(admit, 0,3,1,1);
	   
		buttonConstraints.fill = GridBagConstraints.HORIZONTAL;
		addComponent(admit, 0,4,1,1);
		
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(dockFromQueue, 1,0,2,1);
		
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(dequeue, 1,2,1,1);
		
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(refuse, 1,3,2,2);
		
		buttonConstraints.fill = GridBagConstraints.BOTH;
		addComponent(setSail, 2,1,3,1);
		   
		
		// TEXT FIELDS
		seaShipsID = new JTextField("ID of boats at sea");
		queueShipsID = new JTextField("ID of boats in queue to dock");
		dockShipsID = new JTextField("ID of the boats in dock");
		shipMessages = new JTextField("No Message");
		
		// TEXT FIELD PANEL IMPLEMENTATION
		frame.getContentPane().add(BorderLayout.NORTH, textFieldPanel);
		textFieldPanel.add(seaShipsID);
		textFieldPanel.add(queueShipsID);
		textFieldPanel.add(dockShipsID);
		textFieldPanel.add(shipMessages);
					 
		// MAIN PANEL IMPLEMENTATION
		frame.getContentPane().add(BorderLayout.NORTH, mainPanel);
		mainPanel.add(textFieldPanel);
	   
		frame.setSize(300,200);
		frame.setVisible(true);
	}
				
		private void addComponent(Component component, int row, int column, int width, int height)
		{
			buttonConstraints.gridx = column; 
			buttonConstraints.gridy = row;
			buttonConstraints.gridwidth = width;
			buttonConstraints.gridheight = height;
			buttonLayout.setConstraints(component, buttonConstraints);
			add(component);
		}
	
}