class Webgen::Blackboard
A blackboard object provides methods for inter-object communication. Objects may register themselves for specific messsage names and get notified when such a message gets dispatched.
For a list of all available messages have a look at the Webgen documentation page.
Public Class Methods
Create a new Blackboard object.
Public Instance Methods
Add the given block as listener for the message msg_name.
The id parameter can be used to specify a string which uniquely identifies the listener.
The position parameter can be used to specify where the listener should be added. The keys :before and :after are recognized and must contain a valid listener ID. If no key is or an unknown ID is specified, the listener is added as last entry in the listener array.
Dispatch the message msg_name to all listeners for this message, passing the given arguments.
Remove the blocks associated with the given ID from the dispatcher queues of the given message names.