H5_singleGame/assets/Lobby/scripts/Base/EventMgr.js

class EventMgr{
    constructor() {
        console.log('EventMgr初始化');
        this.events = {};
    }

    //注册事件
    registerEvent(eventName, func, target){
        if(eventName==null || !func || !target){
            return;
        }
        if(!this.events[eventName]){
            this.events[eventName] = [];
        }
        this.events[eventName].push({'target': target, 'func': func});
    }

    //移除事件
    removeEvent(eventName, func, target){
        if(eventName==null || !func || !target){
            return;
        }
        let handlers = this.events[eventName];
        if(!handlers) return;
        for(let i=0; i< handlers.length; i++){
            if(handlers[i] && handlers[i].func == func && handlers[i].target == target){
                handlers[i] = undefined;
                break;
            }
        }
    }

    //移除整个事件
    clearEvent(eventName){
        let handlers = this.events[eventName];
        if(!handlers) return;
        for(let i=0; i < handlers.length; i++){
            handlers[i] = undefined;
        }

    }

    //分发事件
    postEvent(eventName, params){
        let handlers = this.events[eventName];
        if(!handlers) return;
        for(let i=0; i< handlers.length; i++){
            if(handlers[i]){
                try{
                    handlers[i].func.call(handlers[i].target, params);
                }catch(error){
                    console.log(error.message);
                    console.log(error.stack.toString());
                }
            }
        }
    }
 
}

let instance = null;
EventMgr.getInstance = function(){
    if(!instance){
        instance = new EventMgr();
    }
    return instance;

}


module.exports = EventMgr;