JavaScript插件化开发教程 (三)(3)


.dxj-ui-hd {
    padding:0px ;
    margin : 0 auto;
    margin-top:30px;
    width:780px;
    height:60px;
    line-height: 60px;
    background: #3385ff;
    color:#fff;
    font-family: "微软雅黑" ;
    font-size: 28px;
    text-align: center;
    font-weight:bold;
}
.dxj-ui-bd {
    padding:0px ;
    margin : 0 auto;
    width:778px;
    padding-top : 30px ;
    padding-bottom : 30px ;
    overflow: hidden;
    border:1px solid #3385ff;
}
.dxj-ui-bd #tab {
    padding:0px ;
    margin : 0 auto;
    width:720px;
    overflow: hidden;
}
.dxj-ui-bd #tab .title {
    width:720px;
    overflow: hidden;
    border-bottom:2px solid #3385ff;
}
.dxj-ui-bd #tab .title .adder {
    width:160px;
    height:32px;
    line-height: 32px;
    background: #DC143C;
    color:#fff;
    font-family: "微软雅黑" ;
    font-size: 14px;
    text-align: center;
    font-weight:bold;
    float : left;
    cursor:pointer;
}
.dxj-ui-bd #tab .title .items {
    height:32px;
    margin-left:20px;
    width:540px;
    overflow: hidden;
    float : left;
}
.dxj-ui-bd #tab .title .items div {
    padding:0px;
    margin-left:10px;
    width:96px;
    height:32px;
    line-height: 32px;
    background: #3385ff;
    color:#fff;
    font-family: arial ;
    font-size: 12px;
    text-align: center;
    position:relative;
    float : left;
    cursor:pointer;
}
.dxj-ui-bd #tab .title .items div span.del {
    width:16px;
    height:16px;
    line-height: 16px;
    display:block;
    background: #DC143C;
    position:absolute;
    right:0 ;
    top:0;
    cursor:pointer;
}
.dxj-ui-bd #tab .content {
    width:716px;
    padding-top:30px;
    overflow: hidden;
    border:2px solid #3385ff;
    border-top:0px;
    min-height:130px;
    text-align:center;
}
.dxj-ui-bd #tab .content table {
    margin : 0 auto ;
}
.dxj-ui-bd #tab .content div.c {
    padding-top : 20px ;
    padding-left:20px;
    background:#eee;
    height:140px;
}
.dxj-ui-bd #tab .content div.c .input-content {
    margin-top : 10px ;
    font-family: arial ;
    font-size: 12px;
}
.dxj-ui-bd #tab .console-panel {
    width:716px;
    padding-top:20px;
    padding-bottom:20px;
    overflow: hidden;
    border:2px solid #3385ff;
    border-top:0px;
    border-bottom:2px solid #3385ff;
    background:#fff;
    display:none;
}
.active {
    font-weight:bold ;
}

(3),Js代码如下:

复制代码 代码如下:


$(function(){
    bigbear.ui.createTab($("#tab"),{
        buttonText : "添加模块" ,
        result : [
            {
                text : "向导提示" ,
                url : "help.html" ,
                showClose : "0" ,
                status : "1"
            } ,
            {
                text : "学生信息" ,
                url : "info.html" ,
                showClose : "1" ,
                status : "1"
            } ,
            {
                text : "学生分类" ,
                url : "category.html" ,
                showClose : "1" ,
                status : "1"
            } ,
            {
                text : "大熊君{{bb}}" ,
                url : "bb.html" ,
                showClose : "1" ,
                status : "1"
            } ,
            {
                text : "Beta测试模块" ,
                url : "test.html" ,
                showClose : "1" ,
                status : "1"
            }
        ]
    }) ;
}) ;
(function($){
    var win = window ;
    var bb = win.bigbear = win.bigbear || {
        ui : {}
    } ;
    var ui = bb.ui = {} ;
    var Tab = function(elem,opts){
        this.elem = elem ;
        this.opts = opts ;
    } ;
    var tabProto = Tab.prototype ;
    tabProto._deleteItem = function(item){
        var that = this ;
        this.getElem().find(".title .items div")
        .eq(item["index"])
        .fadeOut(function(){
            that._resetContent() ;
            that._updateStatus(item) ;
            that._triggerItem(item["index"] + 1) ;
            that.getElem().find(".title .adder").trigger("click") ;
        }) ;
    } ;
    tabProto._triggerItem = function(next){
        var nextStatus = this._getStatus(next) ;
        var items = this.getElem().find(".title .items div") ;
        next = items.eq(next) ;
        if(next.size() && "1" == nextStatus){ //后继dom节点存在
            next.trigger("click") ;
        }
        else{
            items.eq(0).trigger("click") ;
        }
    } ;
    tabProto._getStatus = function(index){
        var status = "" ;
        $.each(this.getOpts()["result"],function(i,item){
            if(index == item["index"]){
                status += item["status"] ;
                return false ;
            }
        }) ;
        return status ;
    } ;
    tabProto._updateStatus = function(item){
        var status = item["status"] ;
        item["status"] = ("1" == status) ? "0" : "1" ;
    } ;
    tabProto.init = function(){
        var that = this ;
        this.getElem().find(".title .adder")
        .text("+" + this.getOpts()["buttonText"])
        .on("click",function(){
            that._toggleConsolePanel(function(){
                var root = that.getElem().find(".console-panel").empty() ;
                $.each(that.getOpts()["result"],function(i,item){
                    if("0" == item["status"]){
                        var elem = $("<div;></div>")
                        .data("item",item)
                        .appendTo(root) ;
                        $("<input type='radio' />").appendTo(elem) ;
                        $("<span></span>").text(item["text"]).appendTo(elem) ;
                    }
                }) ;
                if(root.find("div").size()){
                    $("<input type='button' value='添加模块'/>")
                    .on("click",function(){
                        var data = root.find("input[type=radio]:checked").parent().data("item") ;
                        that._updateStatus(data) ;
                        that.getElem().find(".title .items div").eq(data["index"]).fadeIn().trigger("click") ;
                        that.getElem().find(".title .adder").trigger("click") ;
                    })
                    .appendTo(root) ;
                }
                else{
                    root.text("暂无任何可添加的项目!") ;
                }
            }) ;
        }) ;
        $.each(this.getOpts()["result"],function(i,item){
            item["index"] = i ;
            that._render(item) ;
        }) ;
        this.getElem().find(".title .items div")
        .eq(0)
        .trigger("click") ; // 假定是必须有一项,否则插件意义就不大了!
    } ;
    tabProto._toggleConsolePanel = function(callback){
        this.getElem().find(".console-panel").slideToggle(function(){
            $.isFunction(callback) && callback() ;
        }) ;
    } ;
    tabProto._resetContent = function(){
        this.getElem().find(".content").html("") ;
    } ;
    tabProto._setContent = function(html){
        this.getElem().find(".content").html(html) ;
    } ;
    tabProto._getContent = function(url){
        return $.ajax({
            url : url
        }) ;
    } ;
    tabProto._render = function(data){
        var that = this ;
        var item = $("<div></div>")
        .text(data["text"])
        .on("click",function(){
            that._setCurrent(data["index"]) ;
            that._getContent(data["url"]).done(function(result){
                that._setContent(result) ;
            })
            .fail(function(){
                throw new Error("Net Error !") ;
            });
        })
        .appendTo(this.getElem().find(".title .items")) ;
        if("1" == data["showClose"]){
            $("<span>X</span>")
            .on("click",function(){
                if(win.confirm("是否删除此项?")){
                    that._deleteItem(data) ;
                    return false ; // 阻止冒泡
                }
            })
            .appendTo(item) ;
        }
    } ;
    tabProto._setCurrent = function(index){
        var items = this.getElem().find(".title .items div").removeClass("active") ;
        items.eq(index).addClass("active") ;
        var contents = this.getElem().find(".content .c").hide() ;
        contents.eq(index).show() ;
    } ;   
    tabProto.getElem = function(){
        return this.elem ;
    } ;
    tabProto.getOpts = function(){
        return this.opts ;
    } ;
    ui.createTab = function(elem,opts){
        var tab = new Tab(elem,opts) ;
        tab.init() ;
        return tab ;
    } ;       
})(jQuery) ;

(四),最后总结

  (1),面向对象的思考方式合理分析功能需求。

  (2),以类的方式来组织我们的插件逻辑。

  (3),不断重构上面的实例,如何进行合理的重构那?不要设计过度,要游刃有余,推荐的方式是过程化设计与面向对象思想设计相结合。

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