Bug 46521

Description Jim Pyrich 2003-11-12 14:58:53 EST

When I call shell.pack() for the shell containing a Table in the following 
example, the table width increases.  If I remove the description of the 
rightmost column, it stays the same size.  I wonder whether it has something to 
do with the phantom column on the right.  In testing, I've seen the phantom 
column disappear & reappear depending on whether I call shell.pack().  I 
believe that it increases 16 pixels each time.  I would like to do away with 
the extra column.  It seems that a pack of TableColumn removes the column and a 
pack of the shell puts it back.


package com.sfisolutions.tests;

import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.custom.*;

public class TableResizeProblem {

	static Display display;
	static Shell shell;
		
public static void main(String[] args){

	display = new Display();
	shell = new Shell(display);
	
	FormLayout layout= new FormLayout();
	layout.marginWidth = 5;
	layout.marginHeight = 5;
	shell.setLayout(layout);
	shell.setText("Table resizing with FormLayout");

	final Composite displayArea = new Composite(shell, SWT.NULL);

	layout = new FormLayout();
	layout.marginWidth = 2;
	layout.marginHeight = 2;
	displayArea.setLayout(layout);

	final Composite composite = new Composite(displayArea, SWT.NONE);
	
	FormLayout groupLayout = new FormLayout();
	composite.setLayout(groupLayout);

	FormData formData = new FormData();
	formData.top = new FormAttachment(0,0);
	formData.left = new FormAttachment(0,0);
	formData.right = new FormAttachment(100,0);
	formData.bottom = new FormAttachment(100,0);
	composite.setLayoutData(formData);

	int styles = SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE | 
SWT.CHECK;

	final Table table = new Table(composite, styles);
	table.setHeaderVisible(true);
	table.setLinesVisible(true);

	layout = new FormLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	table.setLayout(layout);

	TableColumn tableColumn = new TableColumn(table, SWT.NONE, 0);
	tableColumn.setText("Select");
	tableColumn = new TableColumn(table, SWT.NONE, 1);
	tableColumn.setText("Check #");
	tableColumn = new TableColumn(table, SWT.NONE, 2);
	tableColumn.setText("Check Date");
	tableColumn = new TableColumn(table, SWT.NONE, 3);
	tableColumn.setText("Payee");
	tableColumn = new TableColumn(table, SWT.RIGHT, 4);
	tableColumn.setText("Cleared Cks.");
	tableColumn = new TableColumn(table, SWT.RIGHT, 5);
	tableColumn.setText("Outstanding");

	TableItem item = new TableItem (table, SWT.NULL);
	item.setText(0, "");
	item.setText(1, "168");
	item.setText(2, "10-06-2003");
	item.setText(3, "State Farm");
	item.setText(4, "146.35");
	item.setText(5, "");

	Button dataButton = new Button(composite, SWT.PUSH);
	dataButton.setText("Resize");
	dataButton.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			
			for (int i = 0; i < table.getColumnCount(); i++) {
				TableColumn tableColumn = table.getColumn(i);
				tableColumn.pack();
			}

			displayArea.pack();
			shell.pack();
		}
	});

	formData = new FormData();
	formData.top = new FormAttachment(0,5);
	formData.left = new FormAttachment(composite, 0, SWT.CENTER);
	formData.height = 175;
	table.setLayoutData(formData);

	formData = new FormData();
	formData.top = new FormAttachment(table, 5);
	formData.right = new FormAttachment(100,-5);
	dataButton.setLayoutData(formData);

	for (int i = 0; i < table.getColumnCount(); i++) {
		tableColumn = table.getColumn(i);
		tableColumn.pack();
	}

	displayArea.pack();

	shell.pack();
	shell.open();

	while (!shell.isDisposed()) {
		if (!display.readAndDispatch())
			display.sleep();
	}
	
	display.dispose();
}

}