Class: React::Component::PropsWrapper

Inherits:
Object
  • Object
show all
Defined in:
lib/react/component/props_wrapper.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(props, current_props_wrapper = nil) ⇒ PropsWrapper

Returns a new instance of PropsWrapper.



68
69
70
71
72
73
74
75
 
# File 'lib/react/component/props_wrapper.rb', line 68

def initialize(props, current_props_wrapper=nil)
  @props = props || {}
  @processed_params = if current_props_wrapper
    current_props_wrapper.unchanged_processed_params(props)
  else
    {}
  end
end

Instance Attribute Details

#props ⇒ Object (readonly)

Returns the value of attribute props.



10
11
12
 
# File 'lib/react/component/props_wrapper.rb', line 10

def props
  @props
end

Class Method Details

.define_param(name, param_type, owner) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/react/component/props_wrapper.rb', line 12

def self.define_param(name, param_type, owner)
  owner.define_method("#{name}") do |*args, &block|
    deprecated_params_method("#{name}", *args, &block)
  end
  if param_type == Observable
    owner.define_method("#{name}!") do |*args|
      deprecated_params_method("#{name}!", *args)
    end
    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
      if @processed_params.has_key? name
        @processed_params[name]
      else
        @processed_params[name] = 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

Instance Method Details

#[](prop) ⇒ Object 



77
78
79
 
# File 'lib/react/component/props_wrapper.rb', line 77

def [](prop)
  props[prop]
end

#unchanged_processed_params(new_props) ⇒ Object 



60
61
62
63
64
65
66
 
# File 'lib/react/component/props_wrapper.rb', line 60

def unchanged_processed_params(new_props)
  Hash[
    *@processed_params.collect do |key, value|
      [key, value] if @props[key].equal? new_props[key] # `#{@props[key]} == #{new_props[key]}`
    end.compact.flatten(1)
  ]
end