Adobe DPS - JavaScript Library API

Class Index

Class adobeDPS-Signal

Constructor

adobeDPS-Signal()
[inner] Custom event broadcaster

Fields

Field Defined By
memorize : Boolean
If Signal should keep record of previously dispatched parameters and automatically execute listener during add()/addOnce() if Signal was already dispatched before.
Signal
active : Boolean
If Signal is active and should broadcast events.
Signal

Methods

Method Defined By
has(listener:Function, context:Object)
Check if listener was attached to Signal.
Signal
add(listener:Function, listenerContext:Object, priority:Number)
Add a listener to the signal.
Signal
addOnce(listener:Function, listenerContext:Object, priority:Number)
Add listener to the signal that should be removed after first execution (will be executed only once).
Signal
remove(listener:Function, context:Object)
Remove a single listener from the dispatch queue.
Signal
removeAll()
Remove all listeners from the Signal.
Signal
getNumListeners()
Signal
halt()
Stop propagation of the event, blocking the dispatch to next listeners on the queue.
Signal
dispatch(params:...*)
Dispatch/Broadcast Signal to all listeners added to the queue.
Signal
forget()
Forget memorized arguments.
Signal
dispose()
Remove all bindings from signal and destroy any reference to external objects (destroy Signal object).
Signal
toString()
Signal
Class Detail
adobeDPS-Signal()
[inner] Custom event broadcaster
Field Details
memorize : Boolean
If Signal should keep record of previously dispatched parameters and automatically execute listener during add()/addOnce() if Signal was already dispatched before.
active : Boolean
If Signal is active and should broadcast events.

IMPORTANT: Setting this property during a dispatch will only affect the next dispatch, if you want to stop the propagation of a signal use halt() instead.

Method Details
has(listener:Function, context:Object) : Boolean
Check if listener was attached to Signal.
Parameters
listener Function
context Object
Returns:
Boolean if Signal has the specified listener.
add(listener:Function, listenerContext:Object, priority:Number) : adobeDPS-SignalBinding
Add a listener to the signal.
Parameters
listener Function Signal handler function.
listenerContext Object Context on which listener will be executed (object that should represent the this variable inside listener function).
priority Number The priority level of the event listener. Listeners with higher priority will be executed before listeners with lower priority. Listeners with same priority level will be executed at the same order as they were added. (default = 0)
Returns:
adobeDPS-SignalBinding An Object representing the binding between the Signal and listener.
addOnce(listener:Function, listenerContext:Object, priority:Number) : adobeDPS-SignalBinding
Add listener to the signal that should be removed after first execution (will be executed only once).
Parameters
listener Function Signal handler function.
listenerContext Object Context on which listener will be executed (object that should represent the this variable inside listener function).
priority Number The priority level of the event listener. Listeners with higher priority will be executed before listeners with lower priority. Listeners with same priority level will be executed at the same order as they were added. (default = 0)
Returns:
adobeDPS-SignalBinding An Object representing the binding between the Signal and listener.
remove(listener:Function, context:Object) : Function
Remove a single listener from the dispatch queue.
Parameters
listener Function Handler function that should be removed.
context Object Execution context (since you can add the same handler multiple times if executing in a different context).
Returns:
Function Listener handler function.
removeAll()
Remove all listeners from the Signal.
getNumListeners() : Number
Returns:
Number Number of listeners attached to the Signal.
halt()
Stop propagation of the event, blocking the dispatch to next listeners on the queue.

IMPORTANT: should be called only during signal dispatch, calling it before/after dispatch won't affect signal broadcast.

See:
adobeDPS-Signal.prototype.disable
dispatch(params:...*)
Dispatch/Broadcast Signal to all listeners added to the queue.
Parameters
params ...* Parameters that should be passed to each handler.
forget()
Forget memorized arguments.
See:
adobeDPS-Signal.memorize
dispose()
Remove all bindings from signal and destroy any reference to external objects (destroy Signal object).

IMPORTANT: calling any method on the signal instance after calling dispose will throw errors.

toString() : String
Returns:
String String representation of the object.
©2012 Adobe Systems, inc
Documentation generated by JsDoc Toolkit 2.4.0 on Wed Aug 01 2012 12:15:47 GMT-0700 (PDT)