/**
*	2015-01-11
*   edit by meng
*/
(function($){
    $.fn.mailAutoComplete = function(options){
        var defaults = {
            boxClass: "mailListBox", //外部box样式
            listClass: "mailListDefault", //默认的列表样式
            focusClass: "mailListFocus", //列表选中样式
            markCalss: "mailListHlignt", //高亮样式
            zIndex: 1,
            autoClass: true,//是否使用插件自带class样式
            mailArr: ["qq.com","gmail.com","126.com","163.com","hotmail.com","live.com","sohu.com","sina.com","sina.cn","139.cn","189.cn"], //邮件数组
            textHint: false, //文字提示的自动显示与隐藏
            hintText: "",
            focusColor: "#333"
            //blurColor: "#999
    };
    var settings = $.extend({}, defaults, options || {});
    //页面装载CSS样式
    if(settings.autoClass && $("#mailListAppendCss").size() === 0){
        $('<style id="mailListAppendCss" type="text/css">.mailListBox{border:1px solid #369; background:#fff; font:12px/20px Arial;}.mailListDefault{padding:0 5px;cursor:pointer;white-space:nowrap;}.mailListFocus{padding:0 5px;cursor:pointer;white-space:nowrap;background:#369;color:white;}.mailListHlignt{color:red;}.mailListFocus .mailListHlignt{color:#fff;}</style>').appendTo($("head"));
    }
    var cb = settings.boxClass, cl = settings.listClass, cf = settings.focusClass, cm = settings.markCalss; //插件的class变量
    var z = settings.zIndex, newArr = mailArr = settings.mailArr, hint = settings.textHint, text = settings.hintText, fc = settings.focusColor, bc = settings.blurColor;
    //创建邮件内部列表内容
    $.createHtml = function(str, arr, cur){
        var mailHtml = "";
        if($.isArray(arr)){
            $.each(arr, function(i, n){
                if(i === cur){
                    mailHtml += '<div class="mailHover '+cf+'" id="mailList_'+i+'"><span class="'+cm+'">'+str+'</span>@'+arr[i]+'</div>';
                }else{
                    mailHtml += '<div class="mailHover '+cl+'" id="mailList_'+i+'"><span class="'+cm+'">'+str+'</span>@'+arr[i]+'</div>';
                }
            });
        }
        return mailHtml;
    };
    //一些全局变量
    var index = -1, s;
    $(this).each(function(){
        var that = $(this), i = $(".justForJs").size();
        if(i > 0){ //只绑定一个文本框
            return;
        }
        var w = that.outerWidth(), h = that.outerHeight(); //获取当前对象（即文本框）的宽高
        //样式的初始化
        that.wrap('<span style="display:inline-block;position:relative;"></span>')
            .before('<div id="mailListBox_'+i+'" class="justForJs '+cb+'" style="min-width:'+w+'px;_width:'+w+'px;position:absolute;left:-6000px;top:'+h+'px;z-index:'+z+';"></div>');
        var x = $("#mailListBox_" + i), liveValue; //列表框对象
        that.focus(function(){
            //父标签的层级
            $(this).css("color", fc).parent().css("z-index", z);
            //提示文字的显示与隐藏
            if(hint && text){
                var focus_v = $.trim($(this).val());
                if(focus_v === text){
                    $(this).val("");
                }
            }
            //键盘事件
            $(this).keyup(function(e){
                s = v = $.trim($(this).val());
                if(/@/.test(v)){
                    s = v.replace(/@.*/, "");
                }
                if(v.length > 0){
                    //如果按键是上下键
                    if(e.keyCode === 38){
                        //向上
                        if(index <= 0){
                            index = newArr.length;
                        }
                        index--;
                    }else if(e.keyCode === 40){
                        //向下
                        if(index >= newArr.length - 1){
                            index = -1;
                        }
                        index++;
                    }else if(e.keyCode === 13){
                        //回车
                        if(index > -1 && index < newArr.length){
                            //如果当前有激活列表
                            $(this).val($("#mailList_"+index).text());
                        }
                    }else{
                        if(/@/.test(v)){
                            index = -1;
                            //获得@后面的值
                            //s = v.replace(/@.*/, "");
                            //创建新匹配数组
                            var site = v.replace(/.*@/, "");
                            newArr = $.map(mailArr, function(n){
                                var reg = new RegExp(site);
                                if(reg.test(n)){
                                    return n;
                                }
                            });
                        }else{
                            newArr = mailArr;
                        }
                    }
                    x.html($.createHtml(s, newArr, index)).css("left", 0);
                    if(e.keyCode === 13){
                        //回车
                        if(index > -1 && index < newArr.length){
                            //如果当前有激活列表
                            x.css("left", "-6000px");
                        }
                    }
                }else{
                    x.css("left", "-6000px");
                }
            }).blur(function(){
                if(hint && text){
                    var blur_v = $.trim($(this).val());
                    if(blur_v === ""){
                        $(this).val(text);
                    }
                }
                $(this).css("color", bc).unbind("keyup").parent().css("z-index",0);
                x.css("left", "-6000px");

            }).keydown(function(event){
                if(event.keyCode == 13){
                    return false;
                }
            });
            //鼠标经过列表项事件
            //鼠标经过
            $(".mailHover").live("mouseover", function(){
                index = Number($(this).attr("id").split("_")[1]);
                liveValue = $("#mailList_"+index).text();
                x.children("." + cf).removeClass(cf).addClass(cl);
                $(this).addClass(cf).removeClass(cl);
            });
            $(".mailHover").live("click", function(){
                $("#mail").val($(this).html());
            });


        });

        x.bind("mousedown", function(){
            that.val(liveValue);
        });
    });
};

})(jQuery);