commlink-toc.js

// Old script for a jogger.pl blog that builds
// table of contents for comment section

var nickclass = 'commentNick';
var headclass = 'commhead';
var tocid = 'toc';
var tocmenuid = 'tocmenu';
var newcommid = 'newcomm';
var oldcommid = 'oldcomm';
var itemsclass = 'items';
var menuitemclass = 'menuitem';

function setCookie(name, value)
{
        expires = new Date();
        time = new Date();
        expires.setTime(time.getTime() + 3600000*24*7);
        document.cookie = name + "=" + escape(value) + "; expires=" + expires.toGMTString();
}

function getElementsByClassName(className) {
        var children = document.getElementsByTagName('*') || document.all;
        var elements = new Array();

        for (var i = 0; i < children.length; i++) {
                var child = children[i];
                var classNames = child.className.split(' ');
                for (var j = 0; j < classNames.length; j++) {
                        if (classNames[j] == className) {
                                elements.push(child);
                                break;
                        }
                }
        }
        return elements;
}

function getCookie(name)
{
        var dc = document.cookie;
        var prefix = name + "=";
        var begin = dc.indexOf("; " + prefix);
        if (begin == -1) {
                begin = dc.indexOf(prefix);
                if (begin != 0) return 0;
        }
        else {
                begin += 2;
        }
        var end = document.cookie.indexOf(";", begin);
        if (end == -1) {
                end = dc.length;
        }
        return unescape(dc.substring(begin + prefix.length, end));
}

function commids()
{
        sigs = getElementsByClassName(nickclass);
        headers = getElementsByClassName(headclass);
        tocel = document.getElementById(tocid);
        if(sigs.length == 0) {
                return null;
        }
        tocmenu = document.createElement('div');
        tocmenu.setAttribute('id', tocmenuid);
        tocel.appendChild(tocmenu);

        tocmenu = document.getElementById(tocmenuid);

        url = document.URL;
        eidbegin = url.indexOf("eid=");
        eidend = url.indexOf("&", eidbegin);
        if (eidend == -1) {
                eidend = url.length;
        }
        eid = url.substring(eidbegin + 4, eidend);
        lastcomm = getCookie(eid);

        toctab = false;
        comm = null;

        for(i=0; i < sigs.length; i++) {
                if(i < lastcomm && !toctab)
                {
                        itemsel = document.createElement('div')
                        itemsel.setAttribute('class', itemsclass);
                        itemsel.setAttribute('id', oldcommid);

                        comm = document.createElement('div');
                        comm.setAttribute('class', menuitemclass);
                        comm.appendChild(document.createTextNode('Widziane:'));
                        comm.appendChild(itemsel);
                        tocmenu.appendChild(comm);
                        comm = document.getElementById(oldcommid);
                        toctab = true;
                }
                else if(i == lastcomm)
                {
                        itemsel = document.createElement('div')
                        itemsel.setAttribute('class', itemsclass);
                        itemsel.setAttribute('id', newcommid);

                        comm = document.createElement('div');
                        comm.setAttribute('class', menuitemclass);
                        comm.appendChild(document.createTextNode('Nowe:'));
                        comm.appendChild(itemsel);
                        tocmenu.appendChild(comm);
                        comm = document.getElementById(newcommid);
                }

                y = i + 1;

                sigs[i].setAttribute("id", "comm" + (y));

                newlink = document.createElement('a');
                newlink.setAttribute('href', '#comm' + (y));
                newlink.setAttribute('title', 'Komentarz numer ' + y);
                newlink.appendChild(document.createTextNode('#'));

                if(sigs[i].firstChild.firstChild){
                        nodename = sigs[i].firstChild.firstChild.data;
                }
                else {
                        nodename = sigs[i].firstChild.data;
                }

                if(nodename.length > 10) {
                        nodename = nodename.substring(0, 10) + "...";
                }

                toclink = document.createElement('a');
                toclink.setAttribute('href', '#comm' + (y));
                toclink.appendChild(document.createTextNode(nodename));

                newspan = document.createElement('span');
                newspan.appendChild(document.createTextNode(" | "));
                newspan.appendChild(newlink);

                headers[i].appendChild(newspan);
                comm.appendChild(document.createElement('br'));
                comm.appendChild(toclink);
        }
        setCookie(eid, y);
}

//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt

function AttachEvent(obj,evt,fnc,useCapture){
        if (!useCapture) useCapture=false;
        if (obj.addEventListener){
                obj.addEventListener(evt,fnc,useCapture);
                return true;
        } else if (obj.attachEvent) return obj.attachEvent("on"+evt,fnc);
        else{
                MyAttachEvent(obj,evt,fnc);
                obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
        }
}

function MyAttachEvent(obj,evt,fnc){
        if (!obj.myEvents) obj.myEvents={};
        if (!obj.myEvents[evt]) obj.myEvents[evt]=[];
        var evts = obj.myEvents[evt];
        evts[evts.length]=fnc;
}
function MyFireEvent(obj,evt){
        if (!obj || !obj.myEvents || !obj.myEvents[evt]) return;
        var evts = obj.myEvents[evt];
        for (var i=0,len=evts.length;i<len;i++) evts[i]();
}