com.facebook.litho.annotations

Annotation Type FromEvent

@Retention(value=SOURCE)
public @interface FromEvent

Annotates a parameter to a component's event handler callback method indicating that it will be supplied by the event object.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
java.lang.Class	baseClass The base type for an annotated parameter as it's defined in the event object.

Element Detail

baseClass

public abstract java.lang.Class baseClass

The base type for an annotated parameter as it's defined in the event object. This is useful if an event callback wants to receive a more specific type for a param than what's declared in the Event object. The generated code will implicitly cast parameters before it delegates to the spec method.

Either the parameter type as declared or the type specified here must match the type in the Event object.

Default:

java.lang.Object.class