public abstract class EventBus extends EventBus implements HasHandlers
Constructor and Description |
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EventBus() |
Modifier and Type | Method and Description |
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<H> HandlerRegistration |
addHandler(Event.Type<H> type,
H handler)
Adds an unfiltered handler to receive events of this type from all sources.
|
abstract <H extends EventHandler> |
addHandler(GwtEvent.Type<H> type,
H handler) |
<H> HandlerRegistration |
addHandlerToSource(Event.Type<H> type,
java.lang.Object source,
H handler)
Adds a handler to receive events of this type from the given source.
|
abstract <H extends EventHandler> |
addHandlerToSource(GwtEvent.Type<H> type,
java.lang.Object source,
H handler) |
protected void |
castFireEvent(GwtEvent<?> event) |
protected void |
castFireEventFromSource(GwtEvent<?> event,
java.lang.Object source) |
void |
fireEvent(Event<?> event)
Fires the event from no source.
|
abstract void |
fireEvent(GwtEvent<?> event)
Fires the given event to the handlers listening to the event's type.
|
void |
fireEventFromSource(Event<?> event,
java.lang.Object source)
Fires the given event to the handlers listening to the event's type.
|
abstract void |
fireEventFromSource(GwtEvent<?> event,
java.lang.Object source) |
protected HandlerRegistration |
wrap(HandlerRegistration reg) |
dispatchEvent, setSourceOfEvent
public <H> HandlerRegistration addHandler(Event.Type<H> type, H handler)
EventBus
It is rare to call this method directly. More typically an Event
subclass will provide a static register
method, or a widget
will accept handlers directly.
addHandler
in class EventBus
H
- The type of handlertype
- the event type associated with this handlerhandler
- the handlerpublic abstract <H extends EventHandler> HandlerRegistration addHandler(GwtEvent.Type<H> type, H handler)
public <H> HandlerRegistration addHandlerToSource(Event.Type<H> type, java.lang.Object source, H handler)
EventBus
It is rare to call this method directly. More typically a Event
subclass will provide a static register
method, or a widget
will accept handlers directly.
addHandlerToSource
in class EventBus
H
- The type of handlertype
- the event type associated with this handlersource
- the source associated with this handlerhandler
- the handlerpublic abstract <H extends EventHandler> HandlerRegistration addHandlerToSource(GwtEvent.Type<H> type, java.lang.Object source, H handler)
public void fireEvent(Event<?> event)
EventBus
Any exceptions thrown by handlers will be bundled into a
UmbrellaException
and then re-thrown after all handlers have
completed. An exception thrown by a handler will not prevent other handlers
from executing.
public abstract void fireEvent(GwtEvent<?> event)
HasHandlers
Any exceptions thrown by handlers will be bundled into a
UmbrellaException
and then re-thrown after all handlers have
completed. An exception thrown by a handler will not prevent other handlers
from executing.
fireEvent
in interface HasHandlers
event
- the eventpublic void fireEventFromSource(Event<?> event, java.lang.Object source)
EventBus
Any exceptions thrown by handlers will be bundled into a
UmbrellaException
and then re-thrown after all handlers have
completed. An exception thrown by a handler will not prevent other handlers
from executing.
fireEventFromSource
in class EventBus
event
- the event to firepublic abstract void fireEventFromSource(GwtEvent<?> event, java.lang.Object source)
protected void castFireEvent(GwtEvent<?> event)
protected void castFireEventFromSource(GwtEvent<?> event, java.lang.Object source)
protected HandlerRegistration wrap(HandlerRegistration reg)