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Contents
require 'glimmer/error'
require 'glimmer/swt/widget_proxy'
require 'glimmer/ui/custom_widget'
module Glimmer
module DSL
# Represents a StaticExpression for expressions where
# the keyword does not vary dynamically. These static keywords are then
# predefined as methods in Glimmer instead of needing method_missing
#
# StaticExpression subclasses may optionally implement `#can_interpret?`
# (not needed if it only checks for keyword)
#
# StaticExpression subclasses must define `#interpret`.
class StaticExpression < Expression
def self.inherited(base)
keyword = base.name.split(/::/).last.sub(/Expression$/, '').underscore
static_expression = base.new
Glimmer.define_method(keyword) do |*args, &block|
parent = Glimmer::DSL::Engine.current_parent
if !static_expression.can_interpret?(parent, keyword, *args, &block)
raise Error, "Invalid use of Glimmer keyword #{keyword} with args #{args} under parent #{parent}"
else
Glimmer.logger&.debug "#{base.name} will handle expression keyword #{keyword}"
static_expression.interpret(parent, keyword, *args, &block).tap do |ui_object|
Glimmer::DSL::Engine.add_content(ui_object, static_expression, &block) unless block.nil?
end
end
end
end
# Subclasses may optionally implement
def can_interpret?(parent, keyword, *args, &block)
true
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems