Contents

require 'os'

class GlimmerApplication
  OPERATING_SYSTEMS_SUPPORTED = ["mac", "windows", "linux"]
  TEXT_USAGE = <<-MULTILINE
Usage: glimmer application.rb

Runs a Glimmer application using JRuby, automatically preloading
the glimmer ruby gem and SWT jar dependency.

Example: glimmer hello_world.rb
This runs the Glimmer application hello_world.rb
  MULTILINE

  class << self
    def platform_os
      OPERATING_SYSTEMS_SUPPORTED.detect {|os| OS.send("#{os}?")}
    end

    def swt_jar_file
      @swt_jar_file ||= File.expand_path(File.join(__FILE__, '..', '..', 'vendor', 'swt', platform_os, 'swt.jar'))
    end

    def jruby_os_specific_options
      OS.mac? ? "-J-XstartOnFirstThread" : ""
    end

    def jruby_command_options
      "#{jruby_os_specific_options} -J-classpath \"#{swt_jar_file}\" -r glimmer"
    end

    def launch(application)
      system "jruby #{jruby_command_options} -S #{application}"
    end
  end

  def initialize(application_path)
    @application_path = application_path
  end

  def start
    if @application_path
      run_application
    else
      display_usage
    end
  end

  def run_application
    puts "Starting Glimmer Application #{@application_path}"
    self.class.launch(@application_path)
  end

  def display_usage
    puts TEXT_USAGE
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
glimmer-0.2.0	lib/glimmer_application.rb