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Versions: 17
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Contents
require 'glimmer/dsl/expression' require 'glimmer/swt/display_proxy' module Glimmer module DSL module SWT class WidgetListenerExpression < Expression include_package 'org.eclipse.swt.widgets' 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_') widget_or_display_parentage = parent.respond_to?(:swt_widget) || parent.is_a?(Glimmer::SWT::DisplayProxy) Glimmer::Config.logger.debug {"parent #{parent} is a widget or display: #{widget_or_display_parentage}"} return false unless widget_or_display_parentage 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 def interpret(parent, keyword, *args, &block) parent.handle_observation_request(keyword, &block) end end end end end
Version data entries
17 entries across 17 versions & 1 rubygems