new ol.Observable()
Subclasses
Extends
- goog.events.EventTarget
Methods
-
ol.Observable.unByKey(key)
src/ol/observable.js, line 42 -
Removes an event listener using the key returned by
on()
oronce()
.Name Type Description key
goog.events.Key The key returned by
on()
oronce()
. -
changed() experimental
src/ol/observable.js, line 52 -
Increases the revision counter and dispatches a 'change' event.
Fires:
-
change
experimental
-
-
getRevision(){number} experimental
src/ol/observable.js, line 62 -
Returns:
Revision.
-
on(type, listener, opt_this){goog.events.Key}
src/ol/observable.js, line 75 -
Listen for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
this
Object The object to use as
this
inlistener
.Returns:
Unique key for the listener.
-
once(type, listener, opt_this){goog.events.Key}
src/ol/observable.js, line 88 -
Listen once for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
this
Object The object to use as
this
inlistener
.Returns:
Unique key for the listener.
-
un(type, listener, opt_this)
src/ol/observable.js, line 101 -
Unlisten for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
this
Object The object which was used as
this
by thelistener
. -
unByKey(key)
src/ol/observable.js, line 114 -
Removes an event listener using the key returned by
on()
oronce()
. Note that using theol.Observable.unByKey
static function is to be preferred.Name Type Description key
goog.events.Key The key returned by
on()
oronce()
.