Module: React::Component::ClassMethods

Defined in:
lib/react/component/class_methods.rb

Instance Method Summary collapse

Instance Method Details

#add_item_to_tree(current_tree, new_item) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 173

def add_item_to_tree(current_tree, new_item)
  if Native(current_tree).class != Native::Object || new_item.length == 1
    new_item.inject { |memo, sub_name| { sub_name => memo } }
  else
    Native(current_tree)[new_item.last] = add_item_to_tree(Native(current_tree)[new_item.last], new_item[0..-2])
    current_tree
  end
end

#backtrace(*args) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 4

def backtrace(*args)
  @backtrace_off = (args[0] == :off)
end

#collect_other_params_as(name) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 96

def collect_other_params_as(name)
  validator.allow_undefined_props = true
  define_method(name) do
    @_all_others ||= self.class.validator.undefined_props(props)
  end
end

#default_props ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 41

def default_props
  validator.default_props
end

#define_param_method(name, param_type) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 49

def define_param_method(name, param_type)
  if param_type == React::Observable
    (@two_way_params ||= []) << name
    define_method("#{name}") do
      params[name].instance_variable_get("@value") if params[name]
    end
    define_method("#{name}!") do |*args|
      return unless params[name]
      if args.count > 0
        current_value = params[name].instance_variable_get("@value")
        params[name].call args[0]
        current_value
      else
        current_value = params[name].instance_variable_get("@value")
        params[name].call current_value unless @dont_update_state rescue nil # rescue in case we in middle of render
        params[name]
      end
    end
  elsif param_type == Proc
    define_method("#{name}") do |*args, &block|
      params[name].call(*args, &block) if params[name]
    end
  else
    define_method("#{name}") do
      @processed_params[name] ||= if param_type.respond_to? :_react_param_conversion
                                    param_type._react_param_conversion params[name]
                                  elsif param_type.is_a?(Array) && param_type[0].respond_to?(:_react_param_conversion)
                                    params[name].collect { |param| param_type[0]._react_param_conversion param }
                                  else
                                    params[name]
                                  end
    end
  end
end

#define_state(*states, &block) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 103

def define_state(*states, &block)
  default_initial_value = (block && block.arity == 0) ? yield : nil
  states_hash = (states.last.is_a?(Hash)) ? states.pop : {}
  states.each { |name| states_hash[name] = default_initial_value }
  (self.initial_state ||= {}).merge! states_hash
  states_hash.each do |name, initial_value|
    define_state_methods(self, name, &block)
  end
end

#define_state_methods(this, name, from = nil, &block) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 124

def define_state_methods(this, name, from = nil, &block)
  this.define_method("#{name}") do
    React::State.get_state(from || self, name)
  end
  this.define_method("#{name}=") do |new_state|
    yield name, React::State.get_state(from || self, name), new_state if block && block.arity > 0
    React::State.set_state(from || self, name, new_state)
  end
  this.define_method("#{name}!") do |*args|
    #return unless @native
    if args.count > 0
      yield name, React::State.get_state(from || self, name), args[0] if block && block.arity > 0
      current_value = React::State.get_state(from || self, name)
      React::State.set_state(from || self, name, args[0])
      current_value
    else
      current_state = React::State.get_state(from || self, name)
      yield name, React::State.get_state(from || self, name), current_state if block && block.arity > 0
      React::State.set_state(from || self, name, current_state)
      React::Observable.new(current_state) do |update|
        yield name, React::State.get_state(from || self, name), update if block && block.arity > 0
        React::State.set_state(from || self, name, update)
      end
    end
  end
end

#export_component(opts = {}) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 167

def export_component(opts = {})
  export_name = (opts[:as] || name).split("::")
  first_name = export_name.first
  Native(`window`)[first_name] = add_item_to_tree(Native(`window`)[first_name], [React::API.create_native_react_class(self)] + export_name[1..-1].reverse).to_n
end

#export_state(*states, &block) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 113

def export_state(*states, &block)
  default_initial_value = (block && block.arity == 0) ? yield : nil
  states_hash = (states.last.is_a?(Hash)) ? states.pop : {}
  states.each { |name| states_hash[name] = default_initial_value }
  React::State.initialize_states(self, states_hash)
  states_hash.each do |name, initial_value|
    define_state_methods(self, name, self, &block)
    define_state_methods(singleton_class, name, self, &block)
  end
end

#native_mixin(item) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 151

def native_mixin(item)
  native_mixins << item
end

#native_mixins ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 155

def native_mixins
  @native_mixins ||= []
end

#optional_param(name, options = {}) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 91

def optional_param(name, options = {})
  validator.optional(name, options)
  define_param_method(name, options[:type]) unless name == :params
end

#params(&block) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 45

def params(&block)
  validator.build(&block)
end

#process_exception(e, component, reraise = nil) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 8

def process_exception(e, component, reraise = nil)
  message = ["Exception raised while rendering #{component}"]
  if e.backtrace && e.backtrace.length > 1 && !@backtrace_off  # seems like e.backtrace is empty in safari???
    message << "    #{e.backtrace[0]}"
    message += e.backtrace[1..-1].collect { |line| line }
  else
    message[0] += ": #{e.message}"
  end
  message = message.join("\n")
  `console.error(message)`
  raise e if reraise
end

#prop_types ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 25

def prop_types
  if self.validator
    {
      _componentValidator: %x{
        function(props, propName, componentName) {
          var errors = #{validator.validate(Hash.new(`props`))};
          var error = new Error(#{"In component `" + self.name + "`\n" + `errors`.join("\n")});
          return #{`errors`.count > 0 ? `error` : `undefined`};
        }
      }
    }
  else
    {}
  end
end

#required_param(name, options = {}) ⇒ Object Also known as: require_param 



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# File 'lib/react/component/class_methods.rb', line 84

def required_param(name, options = {})
  validator.requires(name, options)
  define_param_method(name, options[:type])
end

#static_call_back(name, &block) ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 159

def static_call_back(name, &block)
  static_call_backs[name] = block
end

#static_call_backs ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 163

def static_call_backs
  @static_call_backs ||= {}
end

#validator ⇒ Object 



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# File 'lib/react/component/class_methods.rb', line 21

def validator
  @validator ||= React::Validator.new
end