/**
*=================================================================
*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:  
*=================================================================
*/

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 = "{$pagenum}"; //数字页数
    this.ipc = this.getpagecount(); //得到页数
}
//输入 页数开始值，结尾值
cls_jspage.prototype.setpagese = function (spagestart, spageend) {
    var sps = spagestart, spe = spageend;
    this.sps = (sps.length > 0) ? sps : "page=";
    this.spe = (spe.length > 0) ? spe : "";
}
//输入 网址
cls_jspage.prototype.seturl = function (surl) {
    var s = surl;
    this.url = (s.length > 0) ? s : "" + document.location;
}
//输入 输入框&下拉框name值
cls_jspage.prototype.setpageinput = function (spageinput) {
    var spi = spageinput;
    this.spi = (spi.length > 0) ? spi : "page";
}
//输入 语言 首页(disable,enale)
cls_jspage.prototype.setpagefrist = function (sdis, sen, snen) {
    this.pf_d = sdis;
    this.pf_e = sen;
    this.pf_n = snen ? snen : sen;
}
//输入 语言 上页
cls_jspage.prototype.setpageprev = function (sdis, sen, snen) {
    this.pp_d = sdis;
    this.pp_e = sen;
    this.pp_n = snen ? snen : sen;
}
//输入 语言 下页
cls_jspage.prototype.setpagenext = function (sdis, sen, snen) {
    this.pn_d = sdis;
    this.pn_e = sen;
    this.pn_n = snen ? snen : sen;
}
//输入 语言 尾页
cls_jspage.prototype.setpagelast = function (sdis, sen, snen) {
    this.pl_d = sdis;
    this.pl_e = sen;
    this.pl_n = snen ? snen : sen;
}
//输入 语言 数字跳转
cls_jspage.prototype.setpagetext = function (sdis, sen) {
    this.pt_d = sdis; //"[{$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+spe;
        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, "(\\?&)", "?");
    s = s.replace("//?", "/?");
    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;
        }
    }
}
cls_jspage.prototype.write = function () {
    document.write(this.creathtml());
}
//输出
cls_jspage.prototype.creathtml = 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, pf_n = this.pf_n;
    var pp_d = this.pp_d, pp_e = this.pp_e, pp_n = this.pp_n;
    var pn_d = this.pn_d, pn_e = this.pn_e, pn_n = this.pn_n;
    var pl_d = this.pl_d, pl_e = this.pl_e, pl_n = this.pl_n;
    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_n + s5;
        pu = s4 + pp_n + s5;
        nu = s4 + pn_n + s5;
        lu = s4 + pl_n + s5;
    }
    else if (ipi == 1 && ipc > 1) {
        fu = s4 + pf_n + s5;
        pu = s4 + pp_n + 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_n + s5;
        lu = s4 + pl_n + 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);
    return 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);
}