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ob1quixote/MeFi Navigator.user.js Secret

Created June 28, 2015 23:57
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MeFi Navigator -- Navigate users' comments in MetaFilter threads.
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MeFi Navigator.user.js
// ==UserScript==
// @name MeFi Navigator
// @namespace http://www.metafilter.com/
// @description Navigate users' comments in Metafilter threads.
// @version 1.3
// @include http://*.metafilter.com/*
// @include http://metafilter.com/*
// @include https://*.metafilter.com/*
// @include https://metafilter.com/*
// @grant none
// ==/UserScript==
if (/.*metafilter\.com\/(\d{1,7}\/|mefi\/|comments\.mefi).*/.test(window.location)) {
var mfn_poster;
var mfn_all = [];
var mfn_div = document.createElement("div");
mfn_preload();
mfn_main(); // don't wait for page load event
}
function mfn_preload() {
mfn_you = mfn_user();
var css = document.createElement("style");
css.setAttribute("type","text/css");
css.innerHTML = "#mfn-dot { padding:0 2px 0 2px;font-size:9pt;line-height:0; } #mfn-arrow { padding:0 2px 0 2px;font-size:10pt;line-height:0;} #mfn-list{padding:0 2px 0 2px;font-size:9pt;line-height:0;} #navigator-list a { -moz-opacity:0.9;background:#666;font-size:8pt;font-family:Arial,sans-serif;border:1px solid #CCC;border-top:none;margin:0;display:block;padding:1px 3px 1px 3px;text-align:center; } #navigator-list li { border:0;margin:0;padding:0;} #navigator-list a:hover { -moz-opacity:1;}";
document.getElementsByTagName("head")[0].appendChild(css);
document.body.addEventListener("click",function() { mfn_div.innerHTML = "";mfn_div.style.display = "none"; },true);
mfn_div.setAttribute("id","navigator-list");
mfn_div.setAttribute("style","display:none;position:absolute;left:0;top:0;padding:1px 0 0 0;");
document.body.appendChild(mfn_div);
mfn_posterNode = document.createElement("span");
mfn_posterNode.innerHTML = "Poster";
mfn_posterNode.setAttribute("style","font-family:Arial,sans-serif;-moz-opacity:0.8;background:#D0D000;color:#222;margin-left:4px;padding:0px 2px 0px 2px;font-weight:bold;font-size:9px;line-height:0;");
mfn_adminNode = mfn_posterNode.cloneNode(true);
mfn_adminNode.innerHTML = "Admin";
mfn_adminNode.style.background = "white";
mfn_userNode = mfn_adminNode.cloneNode(true);
mfn_userNode.innerHTML = "Me";
mfn_userNode.style.background = "#CC9";
mfn_userNode.style.color = "#333";
mfn_zeroNode = document.createTextNode("No other comments.");
var htmlDot = "<b id=\"mfn-dot\">&middot;</b>";
var htmlLeft = "<a href=\"javascript:void(0);\" target='_self' id='mfn-arrow'>&laquo;</a>";
var htmlList = "<a href=\"javascript:void(0)\" target='_self' id='mfn-list' onfocus='blur();'>&equiv;</a>";
var htmlRight = "<a href=\"javascript:void(0);\" target='_self' id='mfn-arrow'>&raquo;</a>";
mfn_htmlFirst = htmlDot + htmlList + htmlRight;
mfn_htmlNormal = htmlLeft + htmlList + htmlRight;
mfn_htmlLast = htmlLeft + htmlList + htmlDot;
}
function mfn_user() {
var cookie = document.cookie.toString();
var i = cookie.indexOf("USER_NAME");
if (i == -1) {
return false;
} else {
var j = cookie.indexOf(';',i);
if (j == -1) j=cookie.length;
return unescape(cookie.substring(i+10,j));
}
}
function mfn_main() {
var elements = document.evaluate('//div[@class="comments" or @class="copy" or @class="comments bestleft"]/span[@class="smallcopy" or @class="smallcopy postbyline"]',document.body,null,XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,null);
mfn_poster = elements.snapshotItem(0).getElementsByTagName('a').item(0).textContent.toString();
for (var i=0,element;element = elements.snapshotItem(i);i++) {
var author = element.getElementsByTagName('a').item(0).textContent.toString();
if (typeof(mfn_all[author]) == "object") { // 'splice' problem
mfn_all[author].push(element);
} else{
mfn_all[author] = [element,];
}
}
for (var author in mfn_all) {
for (var i = 0,lim=mfn_all[author].length;i<lim;i++) {
if (mfn_you != false && author == mfn_you) {
mfn_all[author][i].getElementsByTagName('a').item(0).appendChild(mfn_userNode.cloneNode(true));
}
if (author == mfn_poster && i > 0) {
mfn_all[author][i].getElementsByTagName('a').item(0).appendChild(mfn_posterNode.cloneNode(true));
}
if (lim==1) {
mfn_all[author][i].appendChild(mfn_zeroNode.cloneNode(false));
} else {
var panel = document.createElement("span");
var buffer = ["Other&nbsp;<small style='line-height:0;'>[",];
buffer.push((i+1),"/",lim,"]</small>:&nbsp;");
if (i==0) {
buffer.push(mfn_htmlFirst);
} else if (i==(lim-1)) {
buffer.push(mfn_htmlLast);
} else {
buffer.push(mfn_htmlNormal);
}
panel.innerHTML = buffer.join("");
if (i > 0) panel.childNodes.item(3).addEventListener("click",function() {mfn_prev(this.parentNode);},true);
panel.childNodes.item(4).addEventListener("click",function() {mfn_list(this);},true);
if (i < (lim-1)) panel.childNodes.item(5).addEventListener("click",function() {mfn_next(this.parentNode);},true);
mfn_all[author][i].appendChild(panel);
}
}
}
}
mfn_prev = function (panel) {
var author = panel.parentNode.getElementsByTagName('a').item(0).childNodes.item(0).textContent;
var i = panel.textContent.substring(panel.textContent.indexOf("[")+1,panel.textContent.indexOf("/"));
if (author == mfn_poster && (i-2)==0) {
window.location = "#top";
} else {
var link = mfn_all[author][i-2].getElementsByTagName('a').item(1).href;
if (link.indexOf("faq.metafilter.com") !== -1) { //staff have an extra anchor element to the faq, we don't want that one
link = mfn_all[author][i-2].getElementsByTagName('a').item(2).href;
}
window.location = link.substring(link.lastIndexOf("#"));
}
};
mfn_list = function (icon) {
var author = icon.parentNode.parentNode.getElementsByTagName('a').item(0).childNodes.item(0).textContent;
var j = icon.parentNode.textContent.substring(icon.parentNode.textContent.indexOf("[")+1,icon.parentNode.textContent.indexOf("/"))*1;
var buffer = [];
if (author == mfn_poster) {
var link = "#top";
} else {
var link = mfn_all[author][0].getElementsByTagName('a').item(1).href;
link = link.substring(link.lastIndexOf("#"));
}
buffer.push("<a href='"+link+"' target='_self' style='float:left;font-size:8px;border-right:none;background:#AAA;' title='first'>&middot;&lt;</a>");
link = mfn_all[author][mfn_all[author].length-1].getElementsByTagName('a').item(1).href;
link = link.substring(link.lastIndexOf("#"));
buffer.push("<a href='"+link+"' target='_self' style='float:left;font-size:8px;background:#AAA' title='last'>&gt;&middot;</a>");
buffer.push("<div id='navigator-scroll' style='clear:both;height:200px;overflow:auto;'>");
for (var i=0,lim=mfn_all[author].length;i<lim;i++) {
if (author == mfn_poster && i==0) {
link = "#top";
} else {
link = mfn_all[author][i].getElementsByTagName('a').item(1).href;
if (link.indexOf("faq.metafilter.com") !== -1) {
link = mfn_all[author][i].getElementsByTagName('a').item(2).href;
}
link = link.substring(link.lastIndexOf("#"));
}
buffer.push("<a href='"+link+"' target='_self' style='background:#"+(i%2==0?'AAA':'CCC')+((i+1)==j?';text-decoration:underline;color:white;':';')+"'>"+(i+1)+"</a>");
}
buffer.push("</div>");
mfn_div.innerHTML = buffer.join("");
var rect = icon.getBoundingClientRect();
var body = document.body
var docElem = document.documentElement
var scrollTop = window.pageYOffset || docElem.scrollTop || body.scrollTop;
var scrollLeft = window.pageXOffset || docElem.scrollLeft || body.scrollLeft;
var clientTop = docElem.clientTop || body.clientTop || 0
var clientLeft = docElem.clientLeft || body.clientLeft || 0
var menu_top_pos = rect.bottom + scrollTop - clientTop;
var menu_left_pos = rect.left + scrollLeft - clientLeft;
mfn_div.style.left = Math.round(menu_left_pos) + 'px';
mfn_div.style.top = Math.round(menu_top_pos) + 'px';
mfn_div.style.display = "block";
mfn_div.childNodes.item(2).scrollTop = mfn_div.childNodes.item(2).childNodes.item(j-1).offsetTop-32; };
mfn_next = function (panel) {
var author = panel.parentNode.getElementsByTagName('a').item(0).childNodes.item(0).textContent;
var i = panel.textContent.substring(panel.textContent.indexOf("[")+1,panel.textContent.indexOf("/"));
var link = mfn_all[author][i].getElementsByTagName('a').item(1).href;
if (link.indexOf("faq.metafilter.com") !== -1) { //staff have an extra anchor element to the faq, we don't want that one
link = mfn_all[author][i].getElementsByTagName('a').item(2).href;
}
window.location = link.substring(link.lastIndexOf("#"));
};
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