JRuby/SWTSnippets/Snippet3.rb

################################################################################
# Copyright (c) 2009 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
################################################################################

require 'java'

# 
# Table example snippet: find a table cell from mouse down (SWT.FULL_SELECTION)
#
# For a list of SWT example snippets ported to JRuby, see
# http://wiki.eclipse.org/JRuby/SWTSnippets
#
class Snippet3
	include_package 'org.eclipse.swt'
	include_package 'org.eclipse.swt.widgets'
	include_package 'org.eclipse.swt.graphics'

	def Snippet3.main
		display = Display.new
		shell = Shell.new(display)
		table = Table.new(shell, SWT::BORDER | SWT::V_SCROLL | SWT::FULL_SELECTION)
		table.setHeaderVisible(true)
		table.setLinesVisible(true)
		rowCount = 64; columnCount = 4
		columnCount.times do |i|
			column = TableColumn.new(table, SWT::NONE)
			column.setText("Column #{i}")
		end
		rowCount.times do |i|
			item = TableItem.new(table, SWT::NONE)
			columnCount.times do |j|
				item.setText(j, "Item #{i}-#{j}")
			end
		end
		columnCount.times do |i|
			table.getColumn(i).pack()
		end
		size = table.computeSize(SWT::DEFAULT, 200)
		table.setSize(size)
		table.addListener(SWT::MouseDown) do |event|
			pt = Point.new(event.x, event.y)
			item = table.getItem(pt)
			return unless item
			columnCount.times do |i|
				rect = item.getBounds(i)
				if rect.contains(pt)
					index = table.indexOf(item)
					puts "Item #{index}-#{i}"
				end
			end
		end
		shell.open
		display.sleep unless display.readAndDispatch until shell.isDisposed
		display.dispose
	end
end

Snippet3.main

Compare with the Java version.