hzEvents

A cSharp-like event model for java, decoupe code gracefully.
Java中完满实现C#的Event-EventHandler-EventArgs事件模式，代码优雅解耦合。

用法

Import cn.hz.Events.jar in your project first, or import source code.
首先我的项目中引入cn.hz.Events.jar包，或源码。

Subject

Class which supply events and fire events.
蕴含事件并触发事件的类。

public class Subject {    //Simple event    Event event1 = new Event();    //Event with arguments    Event2<String, Integer> eventWithArg = new Event2<>();    //Sample of removeListener    Event3<Subject, Integer, Integer> eventRemoved = new Event3<>();    public void start() {        // fire events at the appropriate time        onEvent1(new EventArgs());        onEvent2(new EventArgs2<>("Event2", 2));        onEvent3(new EventArgs3<>(this, 3, 3));    }    protected void onEvent1(EventArgs e) {        if (!event1.isEmpty()) {            event1.fire(this, e);        }    }    protected void onEvent2(EventArgs2<String, Integer> e) {        if (!eventWithArg.isEmpty()) {            eventWithArg.fire(this, e);        }    }    protected void onEvent3(EventArgs3<Subject, Integer, Integer> e) {        if (!eventRemoved.isEmpty()) {            eventRemoved.fire(this, e);        }    }}

Observer

Class which subscribe events.
事件订阅者（或观察者）.

public class Observer {    public void bindEvents(Subject subject, EventChain chain) {        // bind event listeners        subject.event1.addListener((o, e) -> {            System.out.println("event1 fired.");        });        subject.eventWithArg.addListener((o, e) -> {            System.out.println("eventWithArg fired, args: " + e.getData1() + "," + e.getData2());        });        chain.chainEvent.addListener((o, e) -> {            System.out.println("chainEvent fired, args: " + e.getData1() + "," + e.getData2());        });        EventHandler3<Subject, Integer, Integer> handler3 = this::onEvent3;        subject.eventRemoved.addListener(handler3);        //remove event binding. message of event3 will not be shown        subject.eventRemoved.removeListener(handler3); //Target must be exactly the same as addListener() !    }    private void onEvent3(Object o, EventArgs3<Subject, Integer, Integer> e) {        System.out.println("event3 fired, args: " + e.getData1() + "," + e.getData2() + "," + e.getData3());    }}

详见源码(Source code)：https://github.com/hzsrc/hzEv...