Results for can-observable-object

A simple, non-threaded, local-object pub-sub/observer with the ability to pub-sub on topics. Topics can be any Ruby object.

Enables an object to define an event method which to becomes a publisher/observable. Subscribers/observers can to be defined dynamically via a block given to the event.

Observatory is a simple gem to facilitate loosely-coupled communication between Ruby objects. It implements the observer design pattern so that your objects can publish events that other objects can subscribe to. Observatory provides some syntactic sugar and methods to notify events, filter values and allow observing objects to stop the filter chain. Observatory is inspired by the Event Dispatcher Symfony component.

Every class or object can be transformed to observer and dynamically react to data changes across several models. Observable module is using build in Active Record hooks or database triggers which can be turned on in multiple App environment.

Based on the idea of notifications in objective-C. Register an object method for notifications. When registered method is called, all objects which have registered will be notified and will be able to know the result of the registered method. Can replace Rails observers.

ReactiveCocoa is an amazing system, and RubyMotion could benefit from the lessons learned there! Motion-Wiretap is, essentially, a wrapper for Key-Value coding and observation. It exposes a +Wiretap+ class that you can use as a signal, or add listeners to it. Extensions are provided to listen to an +Array+ of +Wiretap+ objects, and the `UIKit`/`AppKit` classes are augmented to provide actions as events (gestures, mouse events, value changes).

Cosell is a minimal implementation of the 'Announcements' observer framework, originally introduced in VisualWorks Smalltalk as a replacement for 'triggerEvent' style of event notification. Instead of triggering events identified by symbols, the events are first class objects. For rationale, please see the original blog posting by Vassili Bykov (refs below). *Lineage* This implementation is loosely based on Lukas Renggli's tweak of Colin Putney's Squeak implementation of Vassili Bykov's Announcements framework for VisualWorks Smalltalk. (Specifically Announcements-lr.13.mcz was used as a reference.) Liberties where taken during the port. In particular, the Announcer class in the Smalltalk version is implemented here as a ruby module which can be mixed into any object. Also, in this implementation any object (or class) can serve as an announcement, so no Announcement class is implemented. The ability to queue announcements in the background is built into cosell. <b>The Name 'Cosell'</b> I chose the name 'Cosell' because a. Howard Cosell is an iconic event announcer b. Googling for 'Ruby Announcements', 'Ruby Event Announcements', etc., produced scads of results about ruby meetups, conferences, and the like. So I went with something a bit cryptic but hopefully a little more searchable. *See* * {Original blog posting describing Announcments by Vassili Bykov}[http://www.cincomsmalltalk.com/userblogs/vbykov/blogView?entry=3310034894] * {More info on the Announcements Framework}[http://wiki.squeak.org/squeak/5734]

Cosell is a minimal implementation of the 'Announcements' observer framework, originally introduced in VisualWorks Smalltalk as a replacement for 'triggerEvent' style of event notification. Instead of triggering events identified by symbols, the events are first class objects. For rationale, please see the original blog posting by Vassili Bykov (refs below). *Lineage* This implementation is loosely based on Lukas Renggli's tweak of Colin Putney's Squeak implementation of Vassili Bykov's Announcements framework for VisualWorks Smalltalk. (Specifically Announcements-lr.13.mcz was used as a reference.) Liberties where taken during the port. In particular, the Announcer class in the Smalltalk version is implemented here as a ruby module which can be mixed into any object. Also, in this implementation any object (or class) can serve as an announcement, so no Announcement class is implemented. The ability to queue announcements in the background is built into cosell. <b>The Name 'Cosell'</b> I chose the name 'Cosell' because a. Howard Cosell is an iconic event announcer b. Googling for 'Ruby Announcements', 'Ruby Event Announcements', etc., produced scads of results about ruby meetups, conferences, and the like. So I went with something a bit cryptic but hopefully a little more searchable. *See* * {Original blog posting describing Announcments by Vassili Bykov}[http://www.cincomsmalltalk.com/userblogs/vbykov/blogView?entry=3310034894] * {More info on the Announcements Framework}[http://wiki.squeak.org/squeak/5734]

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