Class: ITunesObserver::Observer

Inherits:
OSX::NSObject
  • Object
show all
Defined in:
lib/itunes_observer.rb

Overview

based on blog.8-p.info/articles/2006/12/24/rubycocoa-skype-itunes

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Observer

Returns a new instance of Observer.



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# File 'lib/itunes_observer.rb', line 52

def initialize
  @callbacks = {}

  notification_centor.addObserver_selector_name_object_(self,
    'onPlayerInfo:',
    'com.apple.iTunes.playerInfo',
    'com.apple.iTunes.player')
end

Instance Method Details

#add_callback(state, &callback) ⇒ Object 



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# File 'lib/itunes_observer.rb', line 73

def add_callback(state, &callback)
  @callbacks[state] ||= []
  @callbacks[state] << callback
end

#finish ⇒ Object 



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# File 'lib/itunes_observer.rb', line 78

def finish
  notification_centor.removeObserver_name_object_(self,
    'com.apple.iTunes.playerInfo',
    'com.apple.iTunes.player')
end

#notification_centor ⇒ Object 



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# File 'lib/itunes_observer.rb', line 84

def notification_centor
  OSX::NSDistributedNotificationCenter.defaultCenter
end

#onPlayerInfo(info) ⇒ Object 



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# File 'lib/itunes_observer.rb', line 61

def onPlayerInfo(info)
  result = Result.new(info.userInfo)

  STATES.each do |k, state|
    if info.userInfo['Player State'] == state
      (@callbacks[state] || []).each do |callback|
        callback.call(result)
      end
    end
  end
end