goog.labs.events.NonDisposableEventTarget
| Provided By | |
|---|---|
| All Implemented Interfaces |
An implementation of goog.events.Listenable with full W3C
EventTarget-like support (capture/bubble mechanism, stopping event
propagation, preventing default actions).
You may subclass this class to turn your class into a Listenable.
Unlike goog.events.EventTarget, this class does not implement
goog.disposable.IDisposable. Instances of this class that have had
It is not necessary to call goog.dispose
or #removeAllListeners in order for an instance of this class
to be garbage collected.
Unless propagation is stopped, an event dispatched by an
EventTarget will bubble to the parent returned by
getParentEventTarget. To set the parent, call
setParentEventTarget. Subclasses that don't support
changing the parent can override the setter to throw an error.
Example usage:
var source = new goog.labs.events.NonDisposableEventTarget();
function handleEvent(e) {
alert('Type: ' + e.type + '; Target: ' + e.target);
}
source.listen('foo', handleEvent);
source.dispatchEvent('foo'); // will call handleEvent
TODO(user): Consider a more modern, less viral (not based on inheritance) replacement of goog.Disposable, which will allow goog.events.EventTarget to not be disposable.
new NonDisposableEventTarget()
| Parameters | None. |
|---|