/* JavaScript Document */
//功能描述：关于xml文件的转换
/********************************************************************
功能： 类的初始化
类型： 初始化变量
参数： name: 实例名称 xmlfile : xml文件名称
返回值: 无
创建人: zxw 更改时间：06/06/08 10:43
********************************************************************/
function getPage(name,xmlFile){
this.name = name;
this.xmlFile = xmlFile;
}
/********************************************************************
功能： 创建 document 对象
类型：
参数： 无
返回值: 无
创建人: zxw 更改时间：06/06/08 10:43
********************************************************************/
getPage.prototype.createXMLDOM = function(fileRoute){ //生成XMLDOM对象
/*var xmldom;
if (window.ActiveXObject){
var xmldom = new ActiveXObject("Microsoft.XMLDOM");
} else {
if (document.implementation && document.implementation.createDocument) {
var xmldom = document.implementation.createDocument("","doc",null);
}
}
xmldom.async = false;
xmldom.resolveExternals = false;
xmldom.validateOnParse = false;
xmldom.preserveWhiteSpace = true;
return xmldom; */
var agt = navigator.userAgent.toLowerCase();
newword_is_ie = (agt.indexOf("msie")!=-1 && document.all);
xmlhttp=null;
if (window.XMLHttpRequest)
{ // code for all new browsers
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE5 and IE6
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp!=null)
{
//xmlhttp.onreadystatechange=state_Change;
xmlhttp.open("GET",fileRoute,false);
xmlhttp.send(null);
xmlDoc = xmlhttp.responseXML;//.documentElement;
}
else
{
alert("Your browser does not support XMLHTTP.");
xmlDoc = null;
}
return xmlDoc;
}
/********************************************************************
功能： 创建生成HTML
类型： createCourse() 读取课程的xml文件并把它转换成html
getElementById(String elementId) 根据给定的id去找对应的元素
参数： 无
返回值: 无
创建人: zxw 更改时间：06/06/08 10:43
********************************************************************/
getPage.prototype.createHtml = function() { //生成并打印
var xmldom = this.createXMLDOM(this.xmlFile);
if (xmldom) {
this.createCourse(xmldom);
} else {
this.html = 'Load XML Error';
}
}
/********************************************************************
功能： 课程内容的生成
类型： 接口函数
参数： obj: 需要读取的xml文件的对象
id： 判断传入的节点 id为null时为根节点
getElementsByTagName(String tagname) 返回标签名字为tagname的所有元素
item(i) 按照给定的索引返回节点
返回值: 无
创建人: zxw 更改时间：06/06/08 10:43
********************************************************************/
var buttonnodes = "";
var num = 0, tnewpage = 1, showNum = 4;
var unSYSpagenum = 0, stratnum = 0, endnum = 4;
var pagenodes;
var pagesx = new Array(); //页面标签顺序
var pagets = new Array(); //页面标签提示
var pagepost_x = new Array(); //页面左上角坐标
var pagepost_y = new Array(); //页面左上角坐标
var pagelsx = 0, pagelts = ""; //临时数据
var pagepostls_x = 0, pagepostls_y = 0; //页面左上角临时坐标
getPage.prototype.createCourse = function(obj, id) {
//生成指定编号节点的html信息
if (typeof(id) == 'undefined') id = null;
//如果没有id传入则为根节点
var unSYSnodes = ""; //根节点的获取
//获取整个xml文件的子元素
unSYSnodes = obj.getElementsByTagName('Page');
//获取分页标签2007-06-11
pagenodes = obj.getElementsByTagName('pagebox');
unSYSpagenum = pagenodes.length;
if (pageNum > unSYSpagenum){
showNum = unSYSpagenum;
endnum = unSYSpagenum;
}
//获得页面标签的数组
for (var t=0; t < unSYSpagenum; t++){
pagelsx = parseInt(pagenodes.item(t).getAttribute("tabindex"));
pagelts = pagenodes.item(t).getAttribute("tabtext");
pagepostls_x = pagenodes.item(t).getAttribute("left");
pagepostls_y = pagenodes.item(t).getAttribute("top");
for (var x=t; x >= 0; x--){
if (x == 0){
pagesx[x] = pagelsx;
pagets[x] = pagelts;
pagepost_x[x] = pagepostls_x;
pagepost_y[x] = pagepostls_y;
break;
}
if (pagelsx > pagesx[x-1]){
pagesx[x] = pagelsx;
pagets[x] = pagelts;
pagepost_x[x] = pagepostls_x;
pagepost_y[x] = pagepostls_y;
break;
}
if (pagelsx < pagesx[x-1]){
pagesx[x] = pagesx[x-1];
pagets[x] = pagets[x-1];
pagepost_x[x] = pagepost_x[x-1];
pagepost_y[x] = pagepost_y[x-1];
}
}
}
buttonnodes += "<<Prev ";
for (var i=0; i < showNum; i++){
num = i + 1;
if (i == 0)
buttonnodes += ""+num+" ";
else
buttonnodes += ""+num+" ";
}
if (pageNum+1 < unSYSpagenum){
num = unSYSpagenum - 1;
buttonnodes += "...";
buttonnodes += ""+unSYSpagenum+" ";
}
if (unSYSpagenum == 1)
buttonnodes += "Next>>";
else
buttonnodes += "Next>>";
document.getElementById("titlebutton").innerHTML=buttonnodes;
}
function showChangeNum(sign){
if (sign == 1){
tnewpage = tnewpage + 1;
if (tnewpage >= unSYSpagenum)
tnewpage = unSYSpagenum;
submitpagevalue(tnewpage,0);
}
if (sign == 0){
tnewpage = tnewpage - 1;
if (tnewpage <= 0)
tnewpage = 1;
submitpagevalue(tnewpage,0);
}
}
//实现翻页功能的操作
var partnumspan = 0, partnumone = 0;
function submitpagevalue(showtitle,showsign){
if (showsign == 0)
parent.frames['pageFramename'].submitpagevalue(showtitle,1);
if (partnumone != 0)
document.getElementById(partnumspan).innerHTML = ""+partnumone+"";
var num = 0;
endnum = showtitle + pageNum - 2;
stratnum = showtitle - 2;
if (endnum > unSYSpagenum){
stratnum = unSYSpagenum - pageNum;
endnum = unSYSpagenum;
}
if (stratnum < 0) stratnum = 0;
buttonnodes = "";
if (showtitle <= 1)
buttonnodes += "<<Prev ";
else
buttonnodes += "<<Prev ";
for (var i=stratnum; i < endnum; i++){
num = i + 1;
buttonnodes += ""+num+" ";
}
if (endnum+1 < unSYSpagenum){
num = unSYSpagenum;
buttonnodes += "...";
buttonnodes += ""+num+" ";
}
if (endnum >= unSYSpagenum + 1){
num = unSYSpagenum;
buttonnodes += ""+num+" ";
}
if (showtitle < unSYSpagenum && unSYSpagenum > 1)
buttonnodes += " Next>> ";
else
buttonnodes += "Next>>";
document.getElementById("titlebutton").innerHTML=buttonnodes;
tnewpage = showtitle;
partnumspan = "zpagesign"+showtitle;
partnumone = showtitle;
document.getElementById(partnumspan).innerHTML = ""+partnumone+"";
parent.frames['contentFramename'].scroll(0,pagepost_y[showtitle - 1]-20);
}