ToiEventTarget

Method Summary

addEventListener ( type , listener )	This method registers an event listener for a specific event. Multiple listeners can be added for the same event. Events are broadcast to all registered listeners.
removeEventListener ( type , listener )	This method removes an event listener for a specific event.

Methods

addEventListener ( type , listener )

This method registers an event listener for a specific event. Multiple listeners can be added for the same event. Events are broadcast to all registered listeners.

Parameters:

Name	Type	Description
`type`	number	The event type of the event to subscribe to.
`listener`	ToiEventListener	The JavaScript function that will receive events.

Throws:

ToiInvalidArgumentException Raised if the event type is not supported by this object or if the listener is not a valid JavaScript function. This exception is also raised if the application calls addEventListener with the same combination of type and listener twice.

removeEventListener ( type , listener )

This method removes an event listener for a specific event.

Parameters:

Name	Type	Description
`type`	number	The event type of the event to remove the listener from.
`listener`	ToiEventListener	The JavaScript function that was previously added as an event listener.

Throws:

ToiInvalidArgumentException Raised if the event type is not supported by this object or if the listener is not a valid JavaScript function. This exception is also raised if the listener has not previously been added.