com.vaadin.event.MethodEventSource Maven / Gradle / Ivy
/*
* Vaadin Framework 7
*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.event;
import java.io.Serializable;
import java.lang.reflect.Method;
/**
*
* Interface for classes supporting registration of methods as event receivers.
*
*
*
* For more information on the inheritable event mechanism see the
* {@link com.vaadin.event com.vaadin.event package documentation}.
*
*
* @author Vaadin Ltd.
* @since 3.0
*/
public interface MethodEventSource extends Serializable {
/**
*
* Registers a new event listener with the specified activation method to
* listen events generated by this component. If the activation method does
* not have any arguments the event object will not be passed to it when
* it's called.
*
*
*
* For more information on the inheritable event mechanism see the
* {@link com.vaadin.event com.vaadin.event package documentation}.
*
*
* @param eventType
* the type of the listened event. Events of this type or its
* subclasses activate the listener.
* @param object
* the object instance who owns the activation method.
* @param method
* the activation method.
* @throws java.lang.IllegalArgumentException
* unless method has exactly one match in
* object
*/
public void addListener(Class eventType, Object object, Method method);
/**
*
* Registers a new listener with the specified activation method to listen
* events generated by this component. If the activation method does not
* have any arguments the event object will not be passed to it when it's
* called.
*
*
*
* This version of addListener gets the name of the activation
* method as a parameter. The actual method is reflected from
* object, and unless exactly one match is found,
* java.lang.IllegalArgumentException is thrown.
*
*
*
* For more information on the inheritable event mechanism see the
* {@link com.vaadin.event com.vaadin.event package documentation}.
*
*
* @param eventType
* the type of the listened event. Events of this type or its
* subclasses activate the listener.
* @param object
* the object instance who owns the activation method.
* @param methodName
* the name of the activation method.
* @throws java.lang.IllegalArgumentException
* unless method has exactly one match in
* object
*/
public void addListener(Class eventType, Object object,
String methodName);
/**
* Removes all registered listeners matching the given parameters. Since
* this method receives the event type and the listener object as
* parameters, it will unregister all object's methods that are
* registered to listen to events of type eventType generated
* by this component.
*
*
* For more information on the inheritable event mechanism see the
* {@link com.vaadin.event com.vaadin.event package documentation}.
*
*
* @param eventType
* the exact event type the object listens to.
* @param target
* the target object that has registered to listen to events of
* type eventType with one or more methods.
*/
public void removeListener(Class eventType, Object target);
/**
* Removes one registered listener method. The given method owned by the
* given object will no longer be called when the specified events are
* generated by this component.
*
*
* For more information on the inheritable event mechanism see the
* {@link com.vaadin.event com.vaadin.event package documentation}.
*
*
* @param eventType
* the exact event type the object listens to.
* @param target
* the target object that has registered to listen to events of
* type eventType with one or more methods.
* @param method
* the method owned by the target that's registered to listen to
* events of type eventType.
*/
public void removeListener(Class eventType, Object target,
Method method);
/**
*
* Removes one registered listener method. The given method owned by the
* given object will no longer be called when the specified events are
* generated by this component.
*
*
*
* This version of removeListener gets the name of the
* activation method as a parameter. The actual method is reflected from the
* target, and unless exactly one match is found,
* java.lang.IllegalArgumentException is thrown.
*
*
*
* For more information on the inheritable event mechanism see the
* {@link com.vaadin.event com.vaadin.event package documentation}.
*
*
* @param eventType
* the exact event type the object listens to.
* @param target
* the target object that has registered to listen to events of
* type eventType with one or more methods.
* @param methodName
* the name of the method owned by target that's
* registered to listen to events of type eventType.
*/
public void removeListener(Class eventType, Object target,
String methodName);
}