Module: Glimmer::DSL::ObserveExpression

Defined in:
lib/glimmer/dsl/observe_expression.rb

Constant Summary collapse

REGEX_NESTED_OR_INDEXED_PROPERTY = 
/([^\[]+)(\[[^\]]+\])?/

Instance Method Summary collapse

Instance Method Details

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

Returns:

  • (Boolean) 


30
31
32
33
34
35
 
# File 'lib/glimmer/dsl/observe_expression.rb', line 30

def can_interpret?(parent, keyword, *args, &block)
  keyword == 'observe' and
    block_given? and
    (args.size >= 1) and
    (args[1].nil? || args[1].is_a?(Hash) || textual?(args[1]))
end

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



37
38
39
40
41
42
43
44
45
 
# File 'lib/glimmer/dsl/observe_expression.rb', line 37

def interpret(parent, keyword, *args, &block)
  observer = DataBinding::Observer.proc(&block)
  if args[1].to_s.match(REGEX_NESTED_OR_INDEXED_PROPERTY)
    observer_registration = observer.observe(DataBinding::ModelBinding.new(*args))
  else
    observer_registration = observer.observe(*args)
  end
  observer_registration
end