Class: Eventbox::ExternalProc

Inherits:
WrappedProc show all
Defined in:
lib/eventbox/sanitizer.rb

Overview

Wrapper for Proc objects created external of some Eventbox instance.

External Proc objects can be invoked from event scope through sync_call and yield_call methods. Optionally a proc can be provided as the last argument which acts as a completion callback. This proc is invoked, when the call has finished, with the result value as argument.

class Callback < Eventbox
  sync_call def init(&block)
    block.call(5, proc do |res|  # invoke the block given to Callback.new
      p res                      # print the block result (5 + 1)
    end)
  end
end
Callback.new {|num| num + 1 }    # Output: 6

External Proc objects can also be passed to action or to external scope. In this case a ExternalProc is unwrapped back to an ordinary Proc object.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object, event_loop, name = nil) ⇒ ExternalProc

Returns a new instance of ExternalProc.



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# File 'lib/eventbox/sanitizer.rb', line 329

def initialize(object, event_loop, name=nil)
  @object = object
  @event_loop = event_loop
  @name = name
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/eventbox/sanitizer.rb', line 328

def name
  @name
end

Instance Method Details

#object_for(target_event_loop) ⇒ Object 



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# File 'lib/eventbox/sanitizer.rb', line 335

def object_for(target_event_loop)
  @event_loop == target_event_loop ? @object : self
end