io.crysknife.ui.navigation.client.local

Class HandlerManager

java.lang.Object

io.crysknife.ui.navigation.client.local.HandlerManager

All Implemented Interfaces:

org.gwtproject.event.shared.HasHandlers

public class HandlerManager
extends Object
implements org.gwtproject.event.shared.HasHandlers

Manager responsible for adding handlers to event sources and firing those handlers on passed in events. Primitive ancestor of EventBus.

Constructor Summary

Constructors

Constructor and Description
HandlerManager(Object source) Creates a handler manager with a source to be set on all events fired via fireEvent(Event).
HandlerManager(Object source, boolean fireInReverseOrder) Creates a handler manager with the given source, specifying the order in which handlers are fired.

Method Summary

Modifier and Type	Method and Description
<H> org.gwtproject.event.shared.HandlerRegistration	addHandler(org.gwtproject.event.shared.Event.Type<H> type, H handler) Adds a handler.
void	fireEvent(org.gwtproject.event.shared.Event<?> event) Fires the given event to the handlers listening to the event's type.
int	getHandlerCount(org.gwtproject.event.shared.Event.Type<?> type) Deprecated.
boolean	isEventHandled(org.gwtproject.event.shared.Event.Type<?> e) Deprecated.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HandlerManager

public HandlerManager(Object source)

Creates a handler manager with a source to be set on all events fired via fireEvent(Event). Handlers will be fired in the order that they are added.

Parameters:

source - the default event source

HandlerManager

public HandlerManager(Object source,
                      boolean fireInReverseOrder)

Creates a handler manager with the given source, specifying the order in which handlers are fired.

Parameters:

source - the event source

fireInReverseOrder - true to fire handlers in reverse order

Method Detail

addHandler

public <H> org.gwtproject.event.shared.HandlerRegistration addHandler(org.gwtproject.event.shared.Event.Type<H> type,
                                                                      H handler)

Adds a handler.

Type Parameters:

H - The type of handler

Parameters:

type - the event type associated with this handler

handler - the handler

Returns:

the handler registration, can be stored in order to remove the handler later

fireEvent

public void fireEvent(org.gwtproject.event.shared.Event<?> event)

Fires the given event to the handlers listening to the event's type.

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.

Note, any subclass should be very careful about overriding this method, as adds/removes of handlers will not be safe except within this implementation.

Specified by:

fireEvent in interface org.gwtproject.event.shared.HasHandlers

Parameters:

event - the event

getHandlerCount

@Deprecated
public int getHandlerCount(org.gwtproject.event.shared.Event.Type<?> type)

Deprecated.

Gets the number of handlers listening to the event type.

Parameters:

type - the event type

Returns:

the number of registered handlers

isEventHandled

@Deprecated
public boolean isEventHandled(org.gwtproject.event.shared.Event.Type<?> e)

Deprecated.

Does this handler manager handle the given event type?

Parameters:

e - the event type

Returns:

whether the given event type is handled