org.w3c.dom.events
public interface: Event [javadoc |
source]
All Known Implementing Classes:
SVGEvent, MutationEventImpl, EventImpl, UIEvent, MouseEvent, LSLoadEvent, SVGZoomEvent, LSProgressEvent, MutationEvent
The
Event interface is used to provide contextual information
about an event to the handler processing the event. An object which
implements the
Event interface is generally passed as the
first parameter to an event handler. More specific context information is
passed to event handlers by deriving additional interfaces from
Event which contain information directly relating to the
type of event they accompany. These derived interfaces are also
implemented by the object passed to the event listener.
See also the Document Object Model (DOM) Level 2 Events Specification.
| Field Summary |
|---|
| public static final short | CAPTURING_PHASE | The current event phase is the capturing phase. |
| public static final short | AT_TARGET | The event is currently being evaluated at the target
EventTarget. |
| public static final short | BUBBLING_PHASE | The current event phase is the bubbling phase. |
| Method from org.w3c.dom.events.Event Detail: |
|---|
 public boolean getBubbles()
Used to indicate whether or not an event is a bubbling event. If the
event can bubble the value is true, else the value is false. |
public boolean getCancelable() Used to indicate whether or not an event can have its default action
prevented. If the default action can be prevented the value is true,
else the value is false. |
public EventTarget getCurrentTarget() Used to indicate the EventTarget whose
EventListeners are currently being processed. This is
particularly useful during capturing and bubbling. |
public short getEventPhase() Used to indicate which phase of event flow is currently being
evaluated. |
public EventTarget getTarget() Used to indicate the EventTarget to which the event was
originally dispatched. |
public long getTimeStamp() Used to specify the time (in milliseconds relative to the epoch) at
which the event was created. Due to the fact that some systems may
not provide this information the value of timeStamp may
be not available for all events. When not available, a value of 0
will be returned. Examples of epoch time are the time of the system
start or 0:0:0 UTC 1st January 1970. |
public String getType() The name of the event (case-insensitive). The name must be an XML name. |
public void initEvent(String eventTypeArg,
boolean canBubbleArg,
boolean cancelableArg) The initEvent method is used to initialize the value of an
Event created through the DocumentEvent
interface. This method may only be called before the
Event has been dispatched via the
dispatchEvent method, though it may be called multiple
times during that phase if necessary. If called multiple times the
final invocation takes precedence. If called from a subclass of
Event interface only the values specified in the
initEvent method are modified, all other attributes are
left unchanged. |
public void preventDefault() If an event is cancelable, the preventDefault method is
used to signify that the event is to be canceled, meaning any default
action normally taken by the implementation as a result of the event
will not occur. If, during any stage of event flow, the
preventDefault method is called the event is canceled.
Any default action associated with the event will not occur. Calling
this method for a non-cancelable event has no effect. Once
preventDefault has been called it will remain in effect
throughout the remainder of the event's propagation. This method may
be used during any stage of event flow. |
public void stopPropagation() The stopPropagation method is used prevent further
propagation of an event during event flow. If this method is called
by any EventListener the event will cease propagating
through the tree. The event will complete dispatch to all listeners
on the current EventTarget before event flow stops. This
method may be used during any stage of event flow. |
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