Contents

require 'glimmer/dsl/expression'
require 'glimmer/data_binding/model_binding'
require 'glimmer/data_binding/tree_items_binding'

module Glimmer
  module DSL
    class TreeItemsDataBindingExpression < Expression
      include_package 'org.eclipse.swt.widgets'

      def can_interpret?(parent, keyword, *args, &block)
        initial_condition = ((keyword == "items") and block.nil? and widget?(parent) and parent.swt_widget.is_a?(Tree))
        return false unless initial_condition
        raise Glimmer::Error, 'Tree items args must be 2' unless args.size == 2
        raise Glimmer::Error, 'Tree items first arg must be a bind expression' unless args[0].is_a?(DataBinding::ModelBinding)
        raise Glimmer::Error, 'Tree items data-binding initial value must not be an array yet a single item representing tree root' unless !args[0].evaluate_property.is_a?(Array)
        raise Glimmer::Error, 'Tree items second arg must be an array' unless args[1].is_a?(Array)
        raise Glimmer::Error, 'Tree items second arg must not be empty' unless !args[1].empty?
        raise Glimmer::Error, 'Tree items second arg array elements must be of type hash' unless args[1].first.is_a?(Hash)
        true
      end

      def interpret(parent, keyword, *args, &block)
        model_binding = args[0]
        tree_properties = args[1]
        DataBinding::TreeItemsBinding.new(parent, model_binding, tree_properties)
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
glimmer-0.5.11	lib/glimmer/dsl/tree_items_data_binding_expression.rb
glimmer-0.5.10	lib/glimmer/dsl/tree_items_data_binding_expression.rb
glimmer-0.5.9	lib/glimmer/dsl/tree_items_data_binding_expression.rb