Screens - subscribe to events

[jamonholmgren]

Let's add an abstraction to NSNotification (perhaps as a separate gem that integrates with ProMotion).

Example:

class SomeScreen < ProMotion::Screen
  def will_appear
    subscribe_to :an_event, action: :handle_an_event
  end
  def handle_an_event
    # handle it
  end
end

# some other class
  broadcast :an_event

[silasjmatson]

We may not want to do it in the will_appear, as we would register the observer multiple times.

class SomeScreen < ProMotion::Screen

  listen_for :an_event, action: :handle_an_event

  def handle_an_event(args={})
    # handle it
  end
end

Perhaps like this?

[jamonholmgren]

You may want to make the listener conditional though. We can make it a hash which would only register it once even if called multiple times.

[jamonholmgren]

listen_for sounds better than subscribe_to -- good idea.

[macfanatic]

I would rather see smaller items like this left to the other two big frameworks, BubbleWrap & SugarCube, both of which already have this implementation.

On Dec 17, 2012, at 2:08 PM, Jamon Holmgren notifications@github.com wrote:

You may want to make the listener conditional though. We can make it a hash which would only register it once even if called multiple times.

— Reply to this email directly or view it on GitHub.

[jamonholmgren]

Good point. We definitely want ProMotion to tie in well with both of those frameworks. We'll look into their implementations and close this if they work well enough.

[jamonholmgren]

I like Sugarcube's implementation, but we won't force either on the user. I'll close this. Good suggestion, @macfanatic.