Contents

require_relative '../parent'
require_relative 'g_swt'

module Glimmer
  module SWT
    class GLayoutData
      include_package 'org.eclipse.swt.layout'

      include Parent

      attr_reader :widget
      attr_reader :layout_data

      def initialize(widget, args)
        @widget = widget
        args = GSWT.constantify_args(args)
        begin
          @layout_data = swt_layout_data_class.new(*args)
        rescue => e
          Glimmer.logger.debug "#{e.message}\n#{e.backtrace.join("\n")}"
          @layout_data = args.first if args.count == 1
        end
        @widget.setLayoutData(@layout_data)
      end

      def process_block(block)
        block.call(self)
      end

      def swt_layout_data_class
        parent_layout_class_name = @widget.getParent.getLayout.class.name
        layout_data_class_name = parent_layout_class_name.sub(/Layout$/, 'Data')
        eval(layout_data_class_name)
      end

      def has_attribute?(attribute_name, *args)
        @layout_data.respond_to?(attribute_setter(attribute_name), args)
      end

      def set_attribute(attribute_name, *args)
        apply_property_type_converters(attribute_name, args)
        @layout_data.send(attribute_setter(attribute_name), *args)
      end

      def apply_property_type_converters(attribute_name, args)
        if args.count == 1 && GSWT.has_constant?(args.first)
          args[0] = GSWT.constant(args.first)
        end
      end

      def attribute_setter(attribute_name)
        "#{attribute_name.to_s.camelcase(:lower)}="
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
glimmer-0.4.9	lib/glimmer/swt/g_layout_data.rb