class React::Component::PropsWrapper

Attributes

component[R]

Public Class Methods

define_param(name, param_type) click to toggle source
# File lib/react/component/props_wrapper.rb, line 12
def self.define_param(name, param_type)
  if param_type == Observable
    define_method("#{name}") do
      value_for(name)
    end
    define_method("#{name}!") do |*args|
      current_value = value_for(name)
      if args.count > 0
        props[name].call args[0]
        current_value
      else
        # rescue in case we in middle of render... What happens during a
        # render that causes exception?
        # Where does `dont_update_state` come from?
        props[name].call current_value unless @dont_update_state rescue nil
        props[name]
      end
    end
  elsif param_type == Proc
    define_method("#{name}") do |*args, &block|
      props[name].call(*args, &block) if props[name]
    end
  else
    define_method("#{name}") do
      fetch_from_cache(name) do
        if param_type.respond_to? :_react_param_conversion
          param_type._react_param_conversion props[name]
        elsif param_type.is_a?(Array) &&
          param_type[0].respond_to?(:_react_param_conversion)
          props[name].collect do |param|
            param_type[0]._react_param_conversion param
          end
        else
          props[name]
        end
      end
    end
  end
end
new(component) click to toggle source
# File lib/react/component/props_wrapper.rb, line 52
def initialize(component)
  @component = component
end

Public Instance Methods

[](prop) click to toggle source
# File lib/react/component/props_wrapper.rb, line 56
def [](prop)
  props[prop]
end

Private Instance Methods

fetch_from_cache(name) { || ... } click to toggle source
# File lib/react/component/props_wrapper.rb, line 62
def fetch_from_cache(name)
  last, value = cache[name]
  return value if last.equal?(props[name])
  yield.tap do |value|
    cache[name] = [props[name], value]
  end