hopglass/lib/utils/helper.js
2017-03-18 16:26:29 +01:00

244 lines
4.7 KiB
JavaScript

"use strict";
define({
get: function (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();
});
},
getJSON: function (url) {
return require("helper").get(url).then(JSON.parse);
},
sortByKey: function (key, d) {
return d.slice().sort(function (a, b) {
return a[key] - b[key];
}).reverse();
},
limit: function (key, m, d) {
return d.filter(function (d) {
return d[key].isAfter(m);
});
},
sum: function (a) {
return a.reduce(function (a, b) {
return a + b;
}, 0);
},
one: function () {
return 1;
},
trueDefault: function (d) {
return d === undefined ? true : d;
},
dictGet: function (dict, key) {
var k = key.shift();
if (!(k in dict)) {
return null;
}
if (key.length == 0) {
return dict[k];
}
return this.dictGet(dict[k], key);
},
localStorageTest: function () {
var test = "test";
try {
localStorage.setItem(test, test);
localStorage.removeItem(test);
return true;
} catch (e) {
return false;
}
},
listReplace: function (s, subst) {
for (var key in subst) {
var re = new RegExp(key, "g");
s = s.replace(re, subst[key]);
}
return s;
},
/* Helpers working with nodes */
offline: function (d) {
return !d.flags.online;
},
online: function (d) {
return d.flags.online;
},
hasLocation: function (d) {
return "location" in d.nodeinfo &&
Math.abs(d.nodeinfo.location.latitude) < 90 &&
Math.abs(d.nodeinfo.location.longitude) < 180;
},
subtract: function (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 */
showDistance: function (d) {
if (isNaN(d.distance)) {
return;
}
return d.distance.toFixed(0) + " m";
},
showTq: function (d) {
return (1 / d.tq * 100).toFixed(0) + "%";
},
attributeEntry: function (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.classList.add("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;
},
createIframe: function (opt, width, height) {
var el = document.createElement("iframe");
width = typeof width !== "undefined" ? width : "525px";
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;
},
showStat: function (o, subst) {
var content, caption;
subst = typeof subst !== "undefined" ? subst : {};
if (o.thumbnail) {
content = document.createElement("img");
content.src = require("helper").listReplace(o.thumbnail, subst);
}
if (o.caption) {
caption = require("helper").listReplace(o.caption, subst);
if (!content) {
content = document.createTextNode(caption);
}
}
if (o.iframe) {
content = require("helper").createIframe(o.iframe, o.width, o.height);
if (o.iframe.src) {
content.src = require("helper").listReplace(o.iframe.src, subst);
} else {
content.src = require("helper").listReplace(o.iframe, subst);
}
}
var p = document.createElement("p");
if (o.href) {
var link = document.createElement("a");
link.target = "_blank";
link.href = require("helper").listReplace(o.href, subst);
link.appendChild(content);
if (caption && o.thumbnail) {
link.title = caption;
}
p.appendChild(link);
} else {
p.appendChild(content);
}
return p;
}
});