sohocoke/app_delegate.rb

## app_delegate.rb
## standard boilerplate.

class AppDelegate
  def applicationDidFinishLaunching(notification)
    buildMenu
    buildWindow

    Story.begin
  end
end


# this mixin attaches a property for other objects to observe via KVO.
module Sleepable
  attr_accessor :sleepy

  def sleep
    log "going to sleep."
    self.sleepy = true
  end
end


class Watcher
  attr_accessor :watching  # what am i watching?
end


## begin our story.

module Story
  def self.begin

    ## so now we assemble an object using the module. simple, object-oriented (cf. class-oriented) programming here. Would be really cool if it works!

    # first we have a bear.

    @the_bear = the_bear = Object.new

    p "can the bear sleep? #{the_bear.respond_to? :sleep}"

    # we teach him to be able to sleep, via a module. the idea is to build an object using modules of features.
    the_bear.extend Sleepable

    p "can the bear sleep after being extended? #{the_bear.respond_to? :sleep}"


    # ok, now we have someone wanting to watch him fall sleep. nature documentary use case.
    @camera_man = camera_man = Watcher.new  # use a class so we can rule this one out, should things go funny. ideally, we'd like not to use silly class definitions like this.

    camera_man.react_to :watching { p "Oh there, #{camera_man} sees a bear falling asleep." }

    camera_man.watching = the_bear


    ## and so? can it happen?

    the_bear.sleep  # yes it does!!

    ## bear went to sleep, cameraman's watching, we have all our state.


    ## now, let's try extending the cameraman.
    p "camera_man's watching: #{camera_man.watching}"

    # let's mix in the feature to the camera man. we're able to reproduce using the extend method...
    # camera_man.extend Sleepable

    # or working with the eigenclass.
    class << camera_man
      include Sleepable
    end

    # and of course, before he goes to sleep, he should still be watching the bear.
    p "he's still watching: #{camera_man.watching}"

    ## and this is where we confirm the bug -- the cameraman forgot what he was watching.

    p "is he sleepy? #{camera_man.sleepy}"  # everything gone!

    ## QED. sad story.


    ## until you guys can fix it!!!! ;) ;) ;)

    ## the main reason i'd like this fixed, is because it's greatly beneficial to add features to objects without thinking about their class definitions all the time.
    ## there are many ways around the #extend or eigenclass modification, but they result in much more cumbersome code.
    ## i'd greatly appreciate this being prioritised up.
    ## Thanks RubyMotion team!
  end

end

## hope you've enjoyed that story. now, for some integration.

class Watcher
  # bubble-wrap's implementation of kvo boilerplating is pretty straightforward and well done -- let's use that to allow the watcher to watch things and react.
  include BubbleWrap::KVO

  def react_to key_path, &handler
    observe key_path, &handler
  end
end

def log *args
  NSLog *args
end


class AppDelegate
  def buildWindow
    @mainWindow = NSWindow.alloc.initWithContentRect([[240, 180], [480, 360]],
      styleMask: NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask,
      backing: NSBackingStoreBuffered,
      defer: false)
    @mainWindow.title = NSBundle.mainBundle.infoDictionary['CFBundleName']
    @mainWindow.orderFrontRegardless
  end
end


### to be continued... @@page.address@@
	## standard boilerplate.

	class AppDelegate
	def applicationDidFinishLaunching(notification)
	buildMenu
	buildWindow

	Story.begin
	end
	end


	# this mixin attaches a property for other objects to observe via KVO.
	module Sleepable
	attr_accessor :sleepy

	def sleep
	log "going to sleep."
	self.sleepy = true
	end
	end


	class Watcher
	attr_accessor :watching # what am i watching?
	end


	## begin our story.

	module Story
	def self.begin

	## so now we assemble an object using the module. simple, object-oriented (cf. class-oriented) programming here. Would be really cool if it works!

	# first we have a bear.

	@the_bear = the_bear = Object.new

	p "can the bear sleep? #{the_bear.respond_to? :sleep}"

	# we teach him to be able to sleep, via a module. the idea is to build an object using modules of features.
	the_bear.extend Sleepable

	p "can the bear sleep after being extended? #{the_bear.respond_to? :sleep}"


	# ok, now we have someone wanting to watch him fall sleep. nature documentary use case.
	@camera_man = camera_man = Watcher.new # use a class so we can rule this one out, should things go funny. ideally, we'd like not to use silly class definitions like this.

	camera_man.react_to :watching { p "Oh there, #{camera_man} sees a bear falling asleep." }

	camera_man.watching = the_bear


	## and so? can it happen?

	the_bear.sleep # yes it does!!

	## bear went to sleep, cameraman's watching, we have all our state.


	## now, let's try extending the cameraman.
	p "camera_man's watching: #{camera_man.watching}"

	# let's mix in the feature to the camera man. we're able to reproduce using the extend method...
	# camera_man.extend Sleepable

	# or working with the eigenclass.
	class << camera_man
	include Sleepable
	end

	# and of course, before he goes to sleep, he should still be watching the bear.
	p "he's still watching: #{camera_man.watching}"

	## and this is where we confirm the bug -- the cameraman forgot what he was watching.

	p "is he sleepy? #{camera_man.sleepy}" # everything gone!

	## QED. sad story.



	## until you guys can fix it!!!! ;) ;) ;)

	## the main reason i'd like this fixed, is because it's greatly beneficial to add features to objects without thinking about their class definitions all the time.
	## there are many ways around the #extend or eigenclass modification, but they result in much more cumbersome code.
	## i'd greatly appreciate this being prioritised up.
	## Thanks RubyMotion team!
	end

	end

	## hope you've enjoyed that story. now, for some integration.

	class Watcher
	# bubble-wrap's implementation of kvo boilerplating is pretty straightforward and well done -- let's use that to allow the watcher to watch things and react.
	include BubbleWrap::KVO

	def react_to key_path, &handler
	observe key_path, &handler
	end
	end

	def log *args
	NSLog *args
	end



	class AppDelegate
	def buildWindow
	@mainWindow = NSWindow.alloc.initWithContentRect([[240, 180], [480, 360]],
	styleMask: NSTitledWindowMask\|NSClosableWindowMask\|NSMiniaturizableWindowMask\|NSResizableWindowMask,
	backing: NSBackingStoreBuffered,
	defer: false)
	@mainWindow.title = NSBundle.mainBundle.infoDictionary['CFBundleName']
	@mainWindow.orderFrontRegardless
	end
	end


	### to be continued... @@page.address@@