/**
*=================================================================
*name:			叶子js分页样式（showopage style with js）
*rcsfile:		cls_jspage.js
*revision:		0.09
*author:		yehe(叶子)
*released:		2005-05-12 23:00:15
*description:	js分页样式，显示上一页下一页的翻页结果
*contact:		qq:311673,msn:myehe@msn.com
*website:		http://www.yehe.org,http://www.showo.com
*=================================================================
*/

function cls_jspage(ireccount,ipagesize,ipagenum,sname){
	this.irc=this.formatnum(ireccount,1,0,0,0);//总记录条数
	this.ips=this.formatnum(ipagesize,1,0,1,0);//每页记录数目
	this.ipn=this.formatnum(ipagenum,0,0,0,0);//显示的前后页数,0为显示所有,负数为这么多页面一个跳转
	this.sn=sname;//实例对象名
	this.stpage="{$page}";//页数
	this.stpagecount="{$pagecount}";//总页数
	this.streccount="{$reccount}";//总记录数
	this.stpagesize="{$pagesize}";//每页记录数
	this.stpagefrist="{$pagefrist}";//首页
	this.stpageprev="{$pageprev}";//上页
	this.stpagenext="{$pagenext}";//下页
	this.stpagelast="{$pagelast}";//尾页
	this.stpagetext="{$pagetext}";//数字跳转
	this.stpagetextf="{$pagetextf}";//数字跳转框架
	this.stpageinput="{$pageinput}";//输入框跳转
	this.stpageselect="{$pageselect}";//下拉菜单跳转
	this.stpagenum="{$pagenum}";//数字页数
	this.ipc=this.getpagecount();//得到页数
}
//输入 页数开始值，结尾值
cls_jspage.prototype.setpagese=function(spagestart,spageend){
	var sps=spagestart,spe=spageend;
	this.sps=(sps.length>0)?sps:"page=";
	this.spe=(spe.length>0)?spe:"";
}
//输入 网址
cls_jspage.prototype.seturl=function(surl){
	var s=surl;
	this.url=(s.length>0)?s:""+document.location;
}
//输入 输入框&下拉框name值
cls_jspage.prototype.setpageinput=function(spageinput){
	var spi=spageinput;
	this.spi=(spi.length>0)?spi:"page";
}
//输入 语言 首页(disable,enale)
cls_jspage.prototype.setpagefrist=function(sdis,sen){
	this.pf_d=sdis;
	this.pf_e=sen;
}
//输入 语言 上页
cls_jspage.prototype.setpageprev=function(sdis,sen){
	this.pp_d=sdis;
	this.pp_e=sen;
}
//输入 语言 下页
cls_jspage.prototype.setpagenext=function(sdis,sen){
	this.pn_d=sdis;
	this.pn_e=sen;
}
//输入 语言 尾页
cls_jspage.prototype.setpagelast=function(sdis,sen){
	this.pl_d=sdis;
	this.pl_e=sen;
}
//输入 语言 数字跳转
cls_jspage.prototype.setpagetext=function(sdis,sen){
	this.pt_d=sdis;//"[{$pagenum}]"
	this.pt_e=sen;//"第{$pagenum}页"
}
//输入 语言 数字跳转外围模板
cls_jspage.prototype.setpagetextf=function(sdis,sen){
	this.ptf_d=sdis;//" {$pagetextf} "
	this.ptf_e=sen;//" {$pagetextf} "
}
//输入 语言 下拉菜单跳转
cls_jspage.prototype.setpageselect=function(sdis,sen){
	this.ps_d=sdis;//"[{$pagenum}]"
	this.ps_e=sen;//"第{$pagenum}页"
}
//输入 css
cls_jspage.prototype.setpagecss=function(scsspagetext,scsspageinput,scsspageselect){
	this.cpt=scsspagetext;//数字跳转css
	this.cpi=scsspageinput;//输入框跳转css
	this.cps=scsspageselect;//下拉菜单跳转css
}
//输入 html模板
cls_jspage.prototype.sethtml=function(shtml){
	this.html=shtml;//html模板
}
//计算页数
cls_jspage.prototype.getpagecount=function(){
	var irc=this.irc,ips=this.ips;
	var i=(irc%ips==0)?(irc/ips):(this.formatnum((irc/ips),1,0,0,0)+1);
	return (i);
}
//取得模板页数和当前页数
cls_jspage.prototype.geturl=function(itype){
	var s=this.url,sps=this.sps,spe=this.spe,stp=this.stpage,ipc=this.ipc;
	var it=itype,i;
	if (s.indexof(sps)==-1) {	
		s+=((s.indexof("?")==-1)?"?":"&")+sps+stp;
		i=1;
	}
	else {
		sreg="(\\s.*)"+this.formatreg(sps)+"(\\d*)"+this.formatreg(spe)+"(\\s.*|\\s*)";
		var spindex=this.reg(s,sreg,"$3");
		s=s.replace(sps+spindex+spe,sps+stp+spe);
		i=this.formatnum(spindex,1,1,0,ipc);
	}
	s=this.reg(s,"(&+)","&");
	s=this.reg(s,"(\\?&)","?");
	return (it==0?s:i);
}
//页面跳转
cls_jspage.prototype.pagejump=function(){
	var spl,spv,sp;
	var su=this.geturl(0),ipi=this.geturl(1);
	var spi=this.spi,stp=this.stpage,ipc=this.ipc;
	spl=document.getelementsbyname(spi).length;
	for (var i=0;i<spl;i++)	{
		spv=document.getelementsbyname(spi)[i].value;
		sp=this.formatnum(spv,1,1,0,ipc);
		if (sp>0) {
			location.href=su.replace(stp,sp);
			break;
		}
	}
}
//输出
cls_jspage.prototype.write=function(){
	var su=this.geturl(0),ipi=this.geturl(1);
	var sn=this.sn,spi=this.spi;
	var ipc=this.ipc,ipn=this.ipn;;
	var irc=this.irc,ips=this.ips;
	var pf_d=this.pf_d,pf_e=this.pf_e;
	var pp_d=this.pp_d,pp_e=this.pp_e;
	var pn_d=this.pn_d,pn_e=this.pn_e;
	var pl_d=this.pl_d,pl_e=this.pl_e;
	var pt_d=this.pt_d,pt_e=this.pt_e;
	var ptf_d=this.ptf_d,ptf_e=this.ptf_e;
	var ps_d=this.ps_d,ps_e=this.ps_e;
	var cpt=this.cpt,cpi=this.cpi;
	var cps=this.cps,ipn=this.ipn;
	var s=this.html;
	stpage=this.stpage;
	stpagecount=this.stpagecount;
	streccount=this.streccount;
	stpagesize=this.stpagesize;
	stpfrist=this.stpagefrist;
	stpprev=this.stpageprev;
	stpnext=this.stpagenext;
	stplast=this.stpagelast;
	stptext=this.stpagetext;
	stptextf=this.stpagetextf;
	stpinput=this.stpageinput;
	stpselect=this.stpageselect;
	stpagenum=this.stpagenum;
	var prevp=this.formatnum((ipi-1),1,1,1,ipc),nextp=this.formatnum((ipi+1),1,1,1,ipc);
	var fu,pu,nu,lu;
	var s1="<span class=\""+cpt+"\"><a href=\"",s2="\">",s3="</a></span>";
	var s4="<span class=\""+cpt+"\">",s5="</span>";
	if (ipi<=1&&ipc<=1) {
		fu=s4+pf_d+s5;
		pu=s4+pp_d+s5;
		nu=s4+pn_d+s5;
		lu=s4+pl_d+s5;
	}
	else if (ipi==1&&ipc>1) {
		fu=s4+pf_d+s5;
		pu=s4+pp_d+s5;
		nu=s1+su.replace(stpage,nextp)+s2+pn_e+s3;
		lu=s1+su.replace(stpage,ipc)+s2+pl_e+s3;
	}
	else if (ipi==ipc) {
		fu=s1+su.replace(stpage,1)+s2+pf_e+s3;
		pu=s1+su.replace(stpage,prevp)+s2+pp_e+s3;
		nu=s4+pn_d+s5;
		lu=s4+pl_d+s5;
	}
	else {
		fu=s1+su.replace(stpage,1)+s2+pf_e+s3;
		pu=s1+su.replace(stpage,prevp)+s2+pp_e+s3;
		nu=s1+su.replace(stpage,nextp)+s2+pn_e+s3;
		lu=s1+su.replace(stpage,ipc)+s2+pl_e+s3;
	}
	var pagestart,pageend;
	if (ipn<0) {
		ipn=math.abs(ipn);
		pagestart=(ipi%ipn==0)?(ipi/ipn):(this.formatnum((ipi/ipn),1,0,0,0));
		pagestart=(pagestart*ipn==ipi)?((pagestart-1)*ipn+1):(pagestart*ipn+1);
		pageend=this.formatnum(pagestart+ipn,0,1,0,ipc)
	}
	else if (ipn==0) {
		pagestart=1;
		pageend=ipc;
	}
	else {
		pagestart=this.formatnum((ipi-ipn),1,0,1,0);
		pageend=this.formatnum((pagestart+ipn*2),0,1,0,ipc);
		pagestart=(pageend==ipc)?this.formatnum((pageend-ipn*2),1,0,1,0):pagestart;
	}
	var pselect="",ptext="",pinput="",p;
	if (ipc>=1) {
		pselect="<select class=\""+cps+"\" name=\""+spi+"\" onchange=\""+sn+".pagejump()\">";
		pinput="<input class=\""+cpi+"\" type=\"text\" name=\""+spi+"\" size=\"5\" maxlength=\"10\" onkeydown=\"if (event.keycode==13) "+sn+".pagejump()\">";
		for (var i=pagestart;i<=pageend;i++) {
			if (i!=ipi) {
				p=s1+su.replace(stpage,i)+s2+pt_e.replace(stpagenum,i)+s3;
				ptext+=ptf_e.replace(stptextf,p);
				pselect+="<option value=\""+i+"\">"+ps_e.replace(stpagenum,i)+"</option>";
			}
			else {
				p=s4+pt_d.replace(stpagenum,i)+s5;
				ptext+=ptf_d.replace(stptextf,p);
				pselect+="<option selected=\"selected\">"+ps_d.replace(stpagenum,i)+"</option>";
			}
		}
		pselect+="</select>";
	}
	s=s.replace(stpage,ipi);
	s=s.replace(stpagecount,ipc);
	s=s.replace(streccount,irc);
	s=s.replace(stpagesize,ips);
	s=s.replace(stpfrist,fu);
	s=s.replace(stpprev,pu);
	s=s.replace(stpnext,nu);
	s=s.replace(stplast,lu);
	s=s.replace(stptext,ptext);
	s=s.replace(stpinput,pinput);
	s=s.replace(stpselect,pselect);
	document.write (s);
}
//输入：欲格式化字符，是否有最小值（0表示没有,1表示有），是否有最大值，最小值（默认值），最大值
cls_jspage.prototype.formatnum=function(snum,bmin,bmax,iminnum,imaxnum){
	var i,in,sn=""+snum,imin=iminnum,imax=imaxnum;
	if (sn.length>0) {
		in=parseint(sn,10);
		i=(isnan(in))?imin:in;
		i=(i<imin&&bmin==1)?imin:i;
		i=(i>imax&&bmax==1)?imax:i;
	}
	else {
		i=imin;
	}
	return (i);
}
//输入：欲正则字符，正则表达式，替换后字符
cls_jspage.prototype.reg=function(sstr,sreg,sre){
	var s="",ss=sstr,sr=sreg,sre=sre;
	if ((ss.length>0)&&(sr.length>0)) {
		eval("re=/"+sr+"/gim;");
		s=ss.replace(re,sre);
	}
	return (s);
}
//格式化正则中的特殊字符
cls_jspage.prototype.formatreg=function(sreg){
	var s="",sr=sreg;
	var sf=new array ("/",".","+","[","]","{","}","$","^","?","*");
	if (sr.length>0) {
		for (var i=0;i<=sf.length;i++) {
			sr=sr.replace(sf[i],"\\"+sf[i]);
		}
		s="("+sr+")";
	}
	return (s);
}