Mirah/SWTSnippets/Snippet6

/*******************************************************************************
 * Copyright (c) 2000, 2011 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

/*
 * GridLayout example snippet: insert widgets into a grid layout
 *
 * For a list of SWT example snippets ported to Mirah, see
 * http://wiki.eclipse.org/Mirah/SWTSnippets
 * 
 * @since 3.1
 */
import org.eclipse.swt.*
import org.eclipse.swt.layout.*
import org.eclipse.swt.widgets.*

display = Display.new
shell = Shell.new(display)
shell.setLayout(GridLayout.new)
c = Composite.new(shell, SWT.NONE)
layout = GridLayout.new
layout.numColumns = 3
c.setLayout(layout)
i = 0
while i < 10
  b = Button.new(c, SWT.PUSH)
  b.setText("Button #{i}")
  i += 1
end
b = Button.new(shell, SWT.PUSH)
b.setText("add a new button at row 2 column 1")
index = 1
b.addListener(SWT.Selection) do |e|
  s = Button.new(c, SWT.PUSH)
  s.setText("Special #{index}")
  index += 1
  children = c.getChildren()
  s.moveAbove(children[3])
  toLayout = Control[1]
  toLayout[0] = s
  shell.layout(toLayout)
end
shell.open
while !shell.isDisposed
  if !display.readAndDispatch
    display.sleep
  end
end
display.dispose