102 lines
5.5 KiB
JavaScript
102 lines
5.5 KiB
JavaScript
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!function(root, factory) {
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"function" == typeof define && define.amd ? // AMD. Register as an anonymous module unless amdModuleId is set
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define([], function() {
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return root.svg4everybody = factory();
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}) : "object" == typeof exports ? module.exports = factory() : root.svg4everybody = factory();
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}(this, function() {
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/*! svg4everybody v2.0.3 | github.com/jonathantneal/svg4everybody */
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function embed(svg, target) {
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// if the target exists
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if (target) {
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// create a document fragment to hold the contents of the target
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var fragment = document.createDocumentFragment(), viewBox = !svg.getAttribute("viewBox") && target.getAttribute("viewBox");
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// conditionally set the viewBox on the svg
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viewBox && svg.setAttribute("viewBox", viewBox);
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// copy the contents of the clone into the fragment
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for (// clone the target
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var clone = target.cloneNode(!0); clone.childNodes.length; ) {
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fragment.appendChild(clone.firstChild);
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}
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/* Note that this is a change of the original code.
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* svg4everybody removes the original <use>. This code wraps
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* the SVG in a group with the class 'use'. This allows to
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* change the colors of the SVG for all browsers by using the
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* CSS selector 'svg use, svg .use'
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*/
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var group = document.createElementNS('http://www.w3.org/2000/svg', 'g');
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group.setAttribute('class', 'use');
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group.appendChild(fragment);
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svg.appendChild(group);
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}
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}
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function loadreadystatechange(xhr) {
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// listen to changes in the request
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xhr.onreadystatechange = function() {
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// if the request is ready
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if (4 === xhr.readyState) {
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// get the cached html document
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var cachedDocument = xhr._cachedDocument;
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// ensure the cached html document based on the xhr response
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cachedDocument || (cachedDocument = xhr._cachedDocument = document.implementation.createHTMLDocument(""),
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cachedDocument.body.innerHTML = xhr.responseText, xhr._cachedTarget = {}), // clear the xhr embeds list and embed each item
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xhr._embeds.splice(0).map(function(item) {
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// get the cached target
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var target = xhr._cachedTarget[item.id];
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// ensure the cached target
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target || (target = xhr._cachedTarget[item.id] = cachedDocument.getElementById(item.id)),
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// embed the target into the svg
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embed(item.svg, target);
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});
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}
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}, // test the ready state change immediately
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xhr.onreadystatechange();
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}
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function svg4everybody(rawopts) {
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function oninterval() {
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// while the index exists in the live <use> collection
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for (// get the cached <use> index
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var index = 0; index < uses.length; ) {
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// get the current <use>
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var use = uses[index], svg = use.parentNode;
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if (svg && /svg/i.test(svg.nodeName)) {
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var src = use.getAttribute("xlink:href");
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if (polyfill && (!opts.validate || opts.validate(src, svg, use))) {
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// remove the <use> element
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svg.removeChild(use);
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// parse the src and get the url and id
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var srcSplit = src.split("#"), url = srcSplit.shift(), id = srcSplit.join("#");
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// if the link is external
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if (url.length) {
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// get the cached xhr request
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var xhr = requests[url];
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// ensure the xhr request exists
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xhr || (xhr = requests[url] = new XMLHttpRequest(), xhr.open("GET", url), xhr.send(),
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xhr._embeds = []), // add the svg and id as an item to the xhr embeds list
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xhr._embeds.push({
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svg: svg,
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id: id
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}), // prepare the xhr ready state change event
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loadreadystatechange(xhr);
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} else {
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// embed the local id into the svg
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embed(svg, document.getElementById(id));
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}
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}
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} else {
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// increase the index when the previous value was not "valid"
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++index;
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}
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}
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// continue the interval
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requestAnimationFrame(oninterval, 67);
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}
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var polyfill, opts = Object(rawopts), newerIEUA = /\bTrident\/[567]\b|\bMSIE (?:9|10)\.0\b/, webkitUA = /\bAppleWebKit\/(\d+)\b/, olderEdgeUA = /\bEdge\/12\.(\d+)\b/;
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polyfill = "polyfill" in opts ? opts.polyfill : newerIEUA.test(navigator.userAgent) || (navigator.userAgent.match(olderEdgeUA) || [])[1] < 10547 || (navigator.userAgent.match(webkitUA) || [])[1] < 537;
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// create xhr requests object
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var requests = {}, requestAnimationFrame = window.requestAnimationFrame || setTimeout, uses = document.getElementsByTagName("use");
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// conditionally start the interval if the polyfill is active
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polyfill && oninterval();
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}
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return svg4everybody;
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});
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