function get(url) { return new Promise(function (resolve, reject) { var req = new XMLHttpRequest(); req.open('GET', url); req.onload = function () { if (req.status == 200) { resolve(req.response); } else { reject(Error(req.statusText)); } }; req.onerror = function () { reject(Error("Network Error")); }; req.send(); }); } function getJSON(url) { return get(url).then(JSON.parse); } function sortByKey(key, d) { return d.slice().sort(function (a, b) { return a[key] - b[key]; }).reverse(); } function limit(key, m, d) { return d.filter(function (d) { return d[key].isAfter(m); }); } function sum(a) { return a.reduce(function (a, b) { return a + b; }, 0); } function one() { return 1; } function trueDefault(d) { return d === undefined ? true : d; } function dictGet(dict, key) { var k = key.shift(); if (!(k in dict)) { return null; } if (key.length == 0) { return dict[k]; } return dictGet(dict[k], key); } function localStorageTest() { var test = 'test'; try { localStorage.setItem(test, test); localStorage.removeItem(test); return true; } catch (e) { return false; } } function listReplace(s, subst) { for (key in subst) { var re = new RegExp(key, 'g'); s = s.replace(re, subst[key]); } return s; } /* Helpers working with nodes */ function offline(d) { return !d.flags.online; } function online(d) { return d.flags.online; } function has_location(d) { return "location" in d.nodeinfo && Math.abs(d.nodeinfo.location.latitude) < 90 && Math.abs(d.nodeinfo.location.longitude) < 180; } function subtract(a, b) { var ids = {}; b.forEach(function (d) { ids[d.nodeinfo.node_id] = true; }); return a.filter(function (d) { return !(d.nodeinfo.node_id in ids); }); } /* Helpers working with links */ function showDistance(d) { if (isNaN(d.distance)) { return; } return numeral(d.distance).format("0,0") + " m"; } function showTq(d) { return numeral(1 / d.tq).format("0%"); } /* Infobox stuff (XXX: move to module) */ function attributeEntry(el, label, value) { if (value === null || value == undefined) { return; } var tr = document.createElement("tr"); var th = document.createElement("th"); if (typeof label === "string") { th.textContent = label; } else { th.appendChild(label); tr.className = "routerpic"; } tr.appendChild(th); var td = document.createElement("td"); if (typeof value == "function") { value(td); } else { td.appendChild(document.createTextNode(value)); } tr.appendChild(td); el.appendChild(tr); return td; } function createIframe(opt, width, height) { el = document.createElement("iframe"); width = typeof width !== 'undefined' ? width : '100%'; height = typeof height !== 'undefined' ? height : '350px'; if (opt.src) { el.src = opt.src; } else { el.src = opt; } if (opt.frameBorder) { el.frameBorder = opt.frameBorder; } else { el.frameBorder = 1; } if (opt.width) { el.width = opt.width; } else { el.width = width; } if (opt.height) { el.height = opt.height; } else { el.height = height; } el.scrolling = "no"; el.seamless = "seamless"; return el; } function showStat(o, subst) { var content, caption; subst = typeof subst !== 'undefined' ? subst : {}; if (o.thumbnail) { content = document.createElement("img"); content.src = listReplace(o.thumbnail, subst); } if (o.caption) { caption = listReplace(o.caption, subst); if (!content) { content = document.createTextNode(caption); } } if (o.iframe) { content = createIframe(o.iframe, o.width, o.height); if (o.iframe.src) { content.src = listReplace(o.iframe.src, subst); } else { content.src = listReplace(o.iframe, subst); } } var p = document.createElement("p"); if (o.href) { var link = document.createElement("a"); link.target = "_blank"; link.href = listReplace(o.href, subst); link.appendChild(content); if (caption && o.thumbnail) { link.title = caption; } p.appendChild(link); } else { p.appendChild(content); } return p; }