Signal class

A signal that can be dispatched to multiple listeners, without returning any data.

Constructors

hashCode → int: The hash code for this object.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

add(Function callback) → void: Adds callback to the list of listeners. If it already exists in the list, it will not be added again.
addOnce(Function callback) → void: Adds callback to the list of listeners, but only once. It will be removed from the list after being dispatched once.
dispatch() → void: Dispatches the signal to all registered listeners.
dispatchWithData(dynamic data) → void: Dispatches the signal to all registered listeners, passing data to each listener.
has(Function callback) → bool: Returns true if callback is currently in the list of listeners.
hasListeners() → bool: Returns true if the signal has any registered listeners.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
remove(Function callback) → void: Removes callback from the list of listeners.
removeAll() → void: Removes all listeners from the signal.
toString() → String: A string representation of this object.
inherited