# Glimmer - a JRuby DSL that enables easy and efficient authoring of user
# interfaces using the robust platform-independent Eclipse SWT library. Glimmer
# comes with built-in data-binding support to greatly facilitate synchronizing
# UI with domain models.

require "rubygems"
require "facets"
require "super_module"
require "logger"
require "java"
require "nested_inherited_jruby_include_package"
require_relative "glimmer/parent"
require_relative "glimmer/swt_packages" #TODO move into SWT namespace
require_relative "glimmer/swt/custom_widget"
require_relative 'glimmer/swt/video' # TODO offload to a custom widget directory
require_relative "glimmer/ext/module"

module Glimmer
  REGEX_METHODS_EXCLUDED = /^(to_|\[)/
   #TODO make it configurable to include or not include
  include SwtPackages
  def self.included(klass)
    klass.include SwtPackages
  end
  def self.extended(klass)
    klass.include SwtPackages
  end

  @@parent_stack = []
  @@logger = Logger.new(STDOUT).tap {|logger| logger.level = Logger::WARN}

  def self.logger
    @@logger
  end

  # TODO calling original method_missing after aliasing for cases where method_missing is not needed, like known excluded symbols

  alias method_missing_without_glimmer method_missing
  def self.method_missing(method_symbol, *args, &block)
    if method_symbol.to_s.match(REGEX_METHODS_EXCLUDED)
      return method_missing_without_glimmer(method_symbol, *args, &block)
    end
    Glimmer.logger.debug "method: " + method_symbol.to_s + " and args: " + args.to_s
    command_handler_chain = CommandHandlerChainFactory.chain
    return_value = command_handler_chain.handle(@@parent_stack.last, method_symbol, *args, &block)
    add_contents(return_value, &block)
    return return_value
  # rescue => e
    # Glimmer.logger.error e.message
    # method_missing_without_glimmer(method_symbol, *args, &block)
  end

  # TODO come up with a better public name for this and put on gwidgets directly
  def self.add_contents(parent, &block)
    @@parent_stack.push(parent) if parent.is_a?(Parent)
    @@parent_stack.last.process_block(block) if block and @@parent_stack.last
    @@parent_stack.pop if parent.is_a?(Parent)
  end

  def self.dsl(dsl)
    @@parent_stack = []
    CommandHandlerChainFactory.select_dsl(dsl)
  end

  #added for convenience

  def method_missing(method_symbol, *args, &block)
    Glimmer.method_missing(method_symbol, *args, &block)
  end

  def add_contents(parent, &block)
    Glimmer.add_contents(parent, &block)
  end

  def dsl(dsl)
    Glimmer.dsl(dsl)
  end
end

# Command handlers may rely on Glimmer, so this is put here to avoid an infinite loop.
require File.dirname(__FILE__) + "/glimmer/xml_command_handlers" #TODO move into namespace
require File.dirname(__FILE__) + "/glimmer/command_handlers" #TODO move into namespace