Class: Glimmer::DSL::Libui::DataBindingExpression

Inherits:
Expression
  • Object
show all
Defined in:
lib/glimmer/dsl/libui/data_binding_expression.rb

Overview

Responsible for wiring data-binding Depends on BindExpression

Instance Method Summary collapse

Instance Method Details

#can_interpret?(parent, keyword, *args, &block) ⇒ Boolean 



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# File 'lib/glimmer/dsl/libui/data_binding_expression.rb', line 31

def can_interpret?(parent, keyword, *args, &block)
  args.size == 1 and
    args[0].is_a?(DataBinding::ModelBinding)
end

#interpret(parent, keyword, *args, &block) ⇒ Object 



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# File 'lib/glimmer/dsl/libui/data_binding_expression.rb', line 36

def interpret(parent, keyword, *args, &block)
  model_binding = args[0]
  model_attribute_observer = Glimmer::DataBinding::Observer.proc do
    parent.send("#{keyword}=", model_binding.evaluate_property)
  end
  model_attribute_observer.observe(model_binding)
  model_attribute_observer.call # initial update
end