class Glimmer::DSL::Swing::ListenerExpression
Widget, Shape, and Display listener experssion
Public Instance Methods
can_interpret?(parent, keyword, *args, &block)
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# File lib/glimmer/dsl/swing/listener_expression.rb, line 29 def can_interpret?(parent, keyword, *args, &block) Glimmer::Config.logger.debug {"keyword starts with on_: #{keyword.start_with?('on_')}"} return false unless keyword.start_with?('on_') proper_parent = parent.respond_to?(:original) Glimmer::Config.logger.debug {"parent #{parent} is a widget, shape, or display: #{proper_parent}"} return false unless proper_parent Glimmer::Config.logger.debug {"block exists?: #{!block.nil?}"} raise Glimmer::Error, "Listener is missing block for keyword: #{keyword}" unless block_given? Glimmer::Config.logger.debug {"args are empty?: #{args.empty?}"} raise Glimmer::Error, "Invalid listener arguments for keyword: #{keyword}(#{args})" unless args.empty? result = parent.can_handle_observation_request?(keyword) Glimmer::Config.logger.debug {"can add listener? #{result}"} raise Glimmer::Error, "Invalid listener keyword: #{keyword}" unless result true end
interpret(parent, keyword, *args, &block)
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# File lib/glimmer/dsl/swing/listener_expression.rb, line 45 def interpret(parent, keyword, *args, &block) parent.handle_observation_request(keyword, &block) end