自制轻量级仿jQuery.boxy对话框插件代码_jquery

/*
* JQuery.cvbox.js
* http://www.chinavalue.net
*
* J.Wang
* http://0417.cnblog.socm
*
* 2010.09.30
*/

(function($) {
$.fn.cvbox = function(options) {
var self = $(this);
var defaults = {
titleBarText: "",
titleBarClose: "关闭",
bgClickClose: false,
bgShow: true,
bgOpacity: 0.2,
confirmText: "",
alertText: "",
delayClose: 0,
submitAfter: function() {
$.noop();
}
};
var param = $.extend({}, defaults, options || {});

//弹框的显示
var cvBoxElement = '';
cvBoxElement += '';

if ($("#cvBoxBorder").size()) {
$("#cvBoxBorder").show();

if (param.bgShow) {
$("#cvBoxShade").show();
}
else {
$("#cvBoxShade").hide();
}
}
else {
$("body").append(cvBoxElement);
}

//一些元素对象，浏览器宽高，滚动高度，页面高度
var cbBg = $("#cvBoxShade");
var cbBorder = $("#cvBoxBorder");
var cbTitleBar = $("#cvBoxTitleBar");
var cbBody = $("#cvBoxBody");
var w, h, st, ph;

var cb = {
//装载的内容
content: function() {
var text;

if (param.confirmText != "") {
text = $('');
}
else if (param.alertText != "") {
text = $('');
}
else {
self.show();
text = self;
}

return text;
},

hw: function(obj) {
//获取任意元素的高宽
var hwSize = {};
$('').appendTo("body").append(obj.clone());
hwSize.w = $("#cbBox").width();
hwSize.h = $("#cbBox").height();
$("#cbBox").remove();
return hwSize;
},

//黑背景的宽高透明度等，弹框的位置
position: function() {
w = $(window).width(), h = $(window).height(), st = $(window).scrollTop(), ph = $(document).height();
cbBg.width(w).height(ph).css("opacity", param.bgOpacity);
//主体内容的位置
var x_size = cb.hw(cb.content());
var xh = x_size.h, xw = x_size.w;
var t = st + (h - xh) / 2, l = (w - xw) / 2;
cbBorder.css({
width: xw,
top: t,
left: l,
zIndex: 9999
});
},

//定位
posfix: function() {
if (window.XMLHttpRequest) {
cbBorder.css("position", "fixed");
} else {
$(window).scroll(function() {
cb.position();
});
}
},

//居中
center: function() {
$(window).resize(function() {
cb.position();
});
},

bgclick: function() {
cbBg.click(function() {
cb.hide();
});
},

bghide: function() {
cbBg.hide();
},

//弹框的隐藏
hide: function() {
if (param.confirmText == "" && param.alertText == "") {
cb.content().hide().appendTo($("body"));
}

//cbBorder.fadeOut(300);
cbBorder.remove();
cbBg.remove();
return false;
},

barhide: function() {
cbTitleBar.hide();
},

show: function() {
if (cbBody.html() == "") {
cbBody.append(cb.content());
}

cb.position();
cb.center();

if (param.titleBarText == "") {
cb.barhide();
}
if (!param.bgShow) {
cb.bghide();
}
if (param.bgClickClose) {
cb.bgclick();
}
if (param.delayClose > 0) {
setTimeout(cb.hide, param.delayClose);
}
}
};

cb.show();

//一些事件的绑定
$("#cvBoxBtnSubmit").bind("click", function() {
if (param.confirmText != ""){
param.submitAfter();
}
cb.hide();
});

$("#cvBoxBtnCancel").bind("click", function() {
cb.hide();
});

$("#cvBoxTitleBarClose").bind("click", function() {
cb.hide();
});
}
})(jQuery);

$("#A4").click(function() { 
$(".A4Demo").cvbox({ 
titleBarText: "载入一段HTML内容" 
}); 
});