void | addEventListener(java.lang.String type, EventListener listener, boolean useCapture) This method allows the registration of event listeners on the event target. |
boolean | dispatchEvent(Event evt) This method allows the dispatch of events into the implementations event model. |
void | removeEventListener(java.lang.String type, EventListener listener, boolean useCapture) This method allows the removal of event listeners from the event target. |
public void addEventListener(java.lang.String type, EventListener listener, boolean useCapture)
EventListener
is added to an
EventTarget
while it is processing an event, it will not
be triggered by the current actions but may be triggered during a
later stage of event flow, such as the bubbling phase.
EventListener
s are registered
on the same EventTarget
with the same parameters the
duplicate instances are discarded. They do not cause the
EventListener
to be called twice and since they are
discarded they do not need to be removed with the
removeEventListener
method.
public boolean dispatchEvent(Event evt)
EventTarget
on which dispatchEvent
is
called.
EventException
- UNSPECIFIED_EVENT_TYPE_ERR: Raised if the Event's type
was not specified by initializing the event before
dispatchEvent was called.public void removeEventListener(java.lang.String type, EventListener listener, boolean useCapture)
EventListener
is removed from an
EventTarget
while it is processing an event, it will not
be triggered by the current actions. EventListener
s can
never be invoked after being removed.
removeEventListener
with arguments which do
not identify any currently registered EventListener
on
the EventTarget
has no effect.
EventTarget
interface is implemented by allNodes
in an implementation which supports the DOM Event Model. Therefore, this interface can be obtained by using binding-specific casting methods on an instance of theNode
interface. The interface allows registration and removal ofEventListeners
on anEventTarget
and dispatch of events to thatEventTarget
. See also the Document Object Model (DOM) Level 2 Events Specification.