saealib.CallbackManager

class saealib.CallbackManager

ベースクラス: object

Manages event handlers.

Handlers are registered per concrete event type and called in registration order when an event of that type is dispatched.

handlers

Mapping from event class to list of registered handler functions.

Type:

defaultdict[type[Event], list[Callable]]

Methods

__init__
dispatch	Invoke all handlers registered for the type of event.
register	Register a handler for an event type.
replace	Replace a registered handler with another.
unregister	Remove a previously registered handler.

Method Details

CallbackManager.__init__()

戻り値の型:

None

CallbackManager.dispatch(event)

Invoke all handlers registered for the type of event.

パラメータ:

event (Event) -- The event object to dispatch. Handlers receive this object directly and may modify its mutable fields.

戻り値の型:

None

CallbackManager.register(event_type, func)

Register a handler for an event type.

パラメータ:

• event_type (type[E]) -- The concrete event class to listen for.

• func (Callable[[E], None]) -- Handler function. Receives the event object and returns nothing.

戻り値の型:

None

CallbackManager.replace(event_type, old, new)

Replace a registered handler with another.

パラメータ:

• event_type (type[E]) -- The event class whose handler list to modify.

• old (Callable[[E], None]) -- The handler to replace. Raises ValueError if not found.

• new (Callable[[E], None]) -- The replacement handler.

戻り値の型:

None

CallbackManager.unregister(event_type, func)

Remove a previously registered handler.

パラメータ:

• event_type (type[E]) -- The event class the handler was registered for.

• func (Callable[[E], None]) -- The handler to remove. Raises ValueError if not found.

戻り値の型:

None