var ApexWebSocket ={
    ws:null,
    /**
     * 客户端是否支持websocket
     * @returns {boolean}
     */
    isSupport:function(){
        var b = false;
        if ('WebSocket' in window) {
            b = true;
        } else if ('MozWebSocket' in window) {
            b = true;
        }
        return b;
    },
    /**
     * 获取ws链接地址
     * @returns {string}
     */
    getTargetUrl:function (topic) {
        if(window["websocket_host"] != undefined){
            return window["websocket_host"] + "/websocket/bidInfoServer/" + topic;
        }
        var target = window["P_basePath"] + "/websocket/bidInfoServer/" + topic;
        if (window.location.protocol == 'http:') {
            return 'ws://' + window.location.host + target;
        } else {
            return 'wss://' + window.location.host + target;
        }
    },
    connect : function (topic, messageCallback, closeCallback) {
        var target = ApexWebSocket.getTargetUrl(topic);
        if ('WebSocket' in window) {
            ApexWebSocket.ws = new WebSocket(target);
        } else if ('MozWebSocket' in window) {
            ApexWebSocket.ws = new MozWebSocket(target);
        } else {
            alert('您的浏览器不支持WebSocket.');
            return;
        }
        ApexWebSocket.ws.onopen = function () {
            Base.Logger.info('WebSocket 链接已创建.');
        };
        ApexWebSocket.ws.onmessage = function (event) {
            //log('Received: ' + event.data);
            if(typeof messageCallback == 'function'){
                try{
                    var json = $.parseJSON(event.data);
                    if(json.success){
                        messageCallback(json.object);
                    }
                }catch (e){
                    Base.Logger.error(e);
                }
            }
        };
        ApexWebSocket.ws.onclose = function (event) {
            Base.Logger.info('WebSocket 链接关闭, Code: ' + event.code + (event.reason == "" ? "" : ", Reason: " + event.reason));
            //if(!!!ApexWebSocket.onclose){
            //    ApexWebSocket.onclose = true;
            //    Base.Logger.info("WebSocket 链接关闭,不进行回调操作。");
            //    return false;//手动关闭
            //}
            if(typeof messageCallback == 'function'){
                Base.Logger.info('WebSocket 进行回调 ');
                setTimeout(function () {
                    closeCallback(event);
                },500);
            }

        };
    },
    isClosed:function(){
        /**
         * readyState 说明：
         *     0        CONNECTING        连接尚未建立
         *     1        OPEN            WebSocket的链接已经建立
         *     2        CLOSING            连接正在关闭
         *     3        CLOSED            连接已经关闭或不可用
         */
        return ApexWebSocket.ws == null || ApexWebSocket.ws.readyState == 3;
    },
    close:function(triggerOnclose){
        ApexWebSocket.onclose = triggerOnclose;
        if(!ApexWebSocket.isClosed()){
            return ApexWebSocket.ws.close();
        }
    }

}