//全局事件处理  分发和监听   相当于一个全局观察者
//这个事件分发处理机制 没有针对每个绑定个体的
cc.director.GlobalEvent = {
    handles_: {},
    //发送事件 事件分发
    emit: function (eventName, data) {
        var returns = [] //返回值
        //console.log('事件分发', eventName);
        data.eventName = eventName//保存一下事件名字

        for ( var findEvenName in this.handles_ ){
            if (findEvenName == eventName) {
                for (var i = 0; i < this.handles_[findEvenName].length; i++) {
                    if (this.handles_[findEvenName][i])
                    {
                        var returnValue = this.handles_[findEvenName][i](data)
                        returns.push(returnValue)
                    }
                }
            }
        }
        return returns
    },
    //添加普通事件  监听
    on: function (eventName, callback, target) {
        //console.log('完成事件注册监听', eventName);
        this.handles_[eventName] = this.handles_[eventName] || []
        
        this.handles_[eventName].push(callback.bind(target))
    },
    //通过事件名和target移除一种事件监听
    off: function (eventName) {
        if (!this.handles_[eventName])
            return;

        for (var i = 0; i < this.handles_[eventName].length; i++) {
            this.handles_[eventName][i] = null
        }
    },

    //一次性清空所有数据
    clear: function(){
        for ( var findEvenName in this.handles_ ){
            for (var i = 0; i < this.handles_[findEvenName].length; i++) {
                this.handles_[findEvenName][i] = null;
            }
        }
    },
}