net.lenni0451.lambdaevents.utils

Class EventUtils

java.lang.Object

net.lenni0451.lambdaevents.utils.EventUtils

public class EventUtils
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EventUtils.FieldHandler A wrapper class for an event handler field with it's EventHandler annotation.
static class	EventUtils.MethodHandler A wrapper class for an event handler method with it's EventHandler annotation.

Constructor Summary

Constructors

Constructor and Description
EventUtils()

Method Summary

Modifier and Type	Method and Description
static java.lang.Class<?>[]	getEvents(EventHandler annotation, java.lang.reflect.Field field, java.util.function.Predicate<java.lang.Class<?>> accept) Get all events handled by the given field.
static java.lang.Class<?>[]	getEvents(EventHandler annotation, java.lang.reflect.Method method, java.util.function.Predicate<java.lang.Class<?>> accept) Get all events handled by the given method.
static java.util.List<EventUtils.FieldHandler>	getFields(java.lang.Class<?> owner, java.util.function.Predicate<java.lang.reflect.Field> accept, boolean registerSuperHandler) Get all fields of the given class which are annotated with EventHandler.
static java.util.List<EventUtils.MethodHandler>	getMethods(java.lang.Class<?> owner, java.util.function.Predicate<java.lang.reflect.Method> accept, boolean registerSuperHandler) Get all methods of the given class which are annotated with EventHandler.
static EventHandler	newEventHandler(int priority) Create a new EventHandler instance with the given priority.
static <T extends java.lang.Throwable> void	sneak(java.lang.Throwable t) Sneaky throw the given exception without declaring it.
static void	verify(java.lang.Class<?> owner, EventHandler annotation, java.lang.reflect.Field field) Check if the given field is a valid event handler field.
static void	verify(java.lang.Class<?> owner, EventHandler annotation, java.lang.reflect.Method method) Check if the given method is a valid event handler method.

Methods inherited from class java.lang.Object

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

Constructor Detail

EventUtils

public EventUtils()

Method Detail

getMethods

@Nonnull
public static java.util.List<EventUtils.MethodHandler> getMethods(@Nonnull
                                                                            java.lang.Class<?> owner,
                                                                            @Nonnull
                                                                            java.util.function.Predicate<java.lang.reflect.Method> accept,
                                                                            boolean registerSuperHandler)

Get all methods of the given class which are annotated with EventHandler.
This method does not verify if the methods are valid.

Parameters:

owner - The class to get the methods from

accept - If the method should be accepted

registerSuperHandler - If the super methods should be registered

Returns:

The list of all found methods

getFields

@Nonnull
public static java.util.List<EventUtils.FieldHandler> getFields(@Nonnull
                                                                          java.lang.Class<?> owner,
                                                                          @Nonnull
                                                                          java.util.function.Predicate<java.lang.reflect.Field> accept,
                                                                          boolean registerSuperHandler)

Get all fields of the given class which are annotated with EventHandler.
This method does not verify if the fields are valid.

Parameters:

owner - The class to get the fields from

accept - If the field should be accepted

registerSuperHandler - If the super fields should be registered

Returns:

The list of all found fields

verify

public static void verify(@Nonnull
                          java.lang.Class<?> owner,
                          @Nonnull
                          EventHandler annotation,
                          @Nonnull
                          java.lang.reflect.Method method)

Check if the given method is a valid event handler method.

Parameters:

owner - The owner of the method

annotation - The EventHandler annotation of the method

method - The method to check

Throws:

java.lang.IllegalStateException - If the method is not valid

verify

public static void verify(@Nonnull
                          java.lang.Class<?> owner,
                          @Nonnull
                          EventHandler annotation,
                          @Nonnull
                          java.lang.reflect.Field field)

Check if the given field is a valid event handler field.

Parameters:

owner - The owner of the field

annotation - The EventHandler annotation of the field

field - The field to check

getEvents

@Nonnull
public static java.lang.Class<?>[] getEvents(@Nonnull
                                                       EventHandler annotation,
                                                       @Nonnull
                                                       java.lang.reflect.Method method,
                                                       @Nonnull
                                                       java.util.function.Predicate<java.lang.Class<?>> accept)

Get all events handled by the given method.

Parameters:

annotation - The EventHandler annotation of the method

method - The method to get the events from

accept - If the event should be accepted

Returns:

The list of all found events

getEvents

@Nonnull
public static java.lang.Class<?>[] getEvents(@Nonnull
                                                       EventHandler annotation,
                                                       @Nonnull
                                                       java.lang.reflect.Field field,
                                                       @Nonnull
                                                       java.util.function.Predicate<java.lang.Class<?>> accept)

Get all events handled by the given field.

Parameters:

annotation - The EventHandler annotation of the field

field - The field to get the events from

accept - If the event should be accepted

Returns:

The list of all found events

sneak

public static <T extends java.lang.Throwable> void sneak(@Nonnull
                                                         java.lang.Throwable t)
                                                  throws T extends java.lang.Throwable

Sneaky throw the given exception without declaring it.

Type Parameters:

T - The type to confuse the compiler

Parameters:

t - The exception to throw

Throws:

T - The given exception

T extends java.lang.Throwable

newEventHandler

@Nonnull
public static EventHandler newEventHandler(int priority)

Create a new EventHandler instance with the given priority.

Parameters:

priority - The priority of the handler

Returns:

The new EventHandler instance