313 lines
9.6 KiB
JavaScript
313 lines
9.6 KiB
JavaScript
///#source 1 1 /src/1.0.0/core.js
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/*! head.core - v1.0.2 */
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/*
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* HeadJS The only script in your <HEAD>
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* Author Tero Piirainen (tipiirai)
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* Maintainer Robert Hoffmann (itechnology)
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* License MIT / http://bit.ly/mit-license
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* WebSite http://headjs.com
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*/
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(function(win, undefined) {
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"use strict";
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// gt, gte, lt, lte, eq breakpoints would have been more simple to write as ['gt','gte','lt','lte','eq']
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// but then we would have had to loop over the collection on each resize() event,
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// a simple object with a direct access to true/false is therefore much more efficient
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var doc = win.document,
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nav = win.navigator,
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loc = win.location,
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html = doc.documentElement,
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klass = [],
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conf = {
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screens : [240, 320, 480, 640, 768, 800, 1024, 1280, 1440, 1680, 1920],
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screensCss: { "gt": true, "gte": false, "lt": true, "lte": false, "eq": false },
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browsers : [
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{ ie: { min: 6, max: 11 } }
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//,{ chrome : { min: 8, max: 33 } }
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//,{ ff : { min: 3, max: 26 } }
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//,{ ios : { min: 3, max: 7 } }
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//,{ android: { min: 2, max: 4 } }
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//,{ webkit : { min: 9, max: 12 } }
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//,{ opera : { min: 9, max: 12 } }
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],
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browserCss: { "gt": true, "gte": false, "lt": true, "lte": false, "eq": true },
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html5 : true,
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page : "-page",
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section : "-section",
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head : "head"
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};
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if (win.head_conf) {
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for (var item in win.head_conf) {
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if (win.head_conf[item] !== undefined) {
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conf[item] = win.head_conf[item];
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}
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}
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}
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function pushClass(name) {
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klass[klass.length] = name;
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}
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function removeClass(name) {
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// need to test for both space and no space
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// https://github.com/headjs/headjs/issues/270
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// https://github.com/headjs/headjs/issues/226
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var re = new RegExp(" ?\\b" + name + "\\b");
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html.className = html.className.replace(re, "");
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}
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function each(arr, fn) {
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for (var i = 0, l = arr.length; i < l; i++) {
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fn.call(arr, arr[i], i);
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}
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}
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// API
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var api = win[conf.head] = function() {
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api.ready.apply(null, arguments);
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};
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api.feature = function(key, enabled, queue) {
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// internal: apply all classes
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if (!key) {
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html.className += " " + klass.join(" ");
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klass = [];
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return api;
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}
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if (Object.prototype.toString.call(enabled) === "[object Function]") {
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enabled = enabled.call();
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}
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pushClass((enabled ? "" : "no-") + key);
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api[key] = !!enabled;
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// apply class to HTML element
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if (!queue) {
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removeClass("no-" + key);
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removeClass(key);
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api.feature();
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}
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return api;
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};
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// no queue here, so we can remove any eventual pre-existing no-js class
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api.feature("js", true);
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// browser type & version
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var ua = nav.userAgent.toLowerCase(),
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mobile = /mobile|android|kindle|silk|midp|phone|(windows .+arm|touch)/.test(ua);
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// useful for enabling/disabling feature (we can consider a desktop navigator to have more cpu/gpu power)
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api.feature("mobile" , mobile , true);
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api.feature("desktop", !mobile, true);
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// http://www.zytrax.com/tech/web/browser_ids.htm
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// http://www.zytrax.com/tech/web/mobile_ids.html
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ua = /(chrome|firefox)[ \/]([\w.]+)/.exec(ua) || // Chrome & Firefox
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/(iphone|ipad|ipod)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || // Mobile IOS
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/(android)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || // Mobile Webkit
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/(webkit|opera)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || // Safari & Opera
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/(msie) ([\w.]+)/.exec(ua) ||
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/(trident).+rv:(\w.)+/.exec(ua) || [];
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var browser = ua[1],
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version = parseFloat(ua[2]);
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switch (browser) {
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case "msie":
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case "trident":
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browser = "ie";
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version = doc.documentMode || version;
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break;
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case "firefox":
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browser = "ff";
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break;
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case "ipod":
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case "ipad":
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case "iphone":
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browser = "ios";
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break;
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case "webkit":
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browser = "safari";
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break;
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}
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// Browser vendor and version
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api.browser = {
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name: browser,
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version: version
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};
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api.browser[browser] = true;
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for (var i = 0, l = conf.browsers.length; i < l; i++) {
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for (var key in conf.browsers[i]) {
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if (browser === key) {
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pushClass(key);
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var min = conf.browsers[i][key].min;
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var max = conf.browsers[i][key].max;
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for (var v = min; v <= max; v++) {
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if (version > v) {
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if (conf.browserCss.gt) {
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pushClass("gt-" + key + v);
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}
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if (conf.browserCss.gte) {
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pushClass("gte-" + key + v);
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}
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} else if (version < v) {
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if (conf.browserCss.lt) {
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pushClass("lt-" + key + v);
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}
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if (conf.browserCss.lte) {
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pushClass("lte-" + key + v);
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}
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} else if (version === v) {
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if (conf.browserCss.lte) {
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pushClass("lte-" + key + v);
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}
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if (conf.browserCss.eq) {
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pushClass("eq-" + key + v);
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}
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if (conf.browserCss.gte) {
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pushClass("gte-" + key + v);
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}
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}
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}
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} else {
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pushClass("no-" + key);
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}
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}
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}
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pushClass(browser);
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pushClass(browser + parseInt(version, 10));
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// IE lt9 specific
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if (conf.html5 && browser === "ie" && version < 9) {
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// HTML5 support : you still need to add html5 css initialization styles to your site
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// See: assets/html5.css
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each("abbr|article|aside|audio|canvas|details|figcaption|figure|footer|header|hgroup|main|mark|meter|nav|output|progress|section|summary|time|video".split("|"), function(el) {
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doc.createElement(el);
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});
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}
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// CSS "router"
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each(loc.pathname.split("/"), function(el, i) {
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if (this.length > 2 && this[i + 1] !== undefined) {
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if (i) {
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pushClass(this.slice(i, i + 1).join("-").toLowerCase() + conf.section);
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}
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} else {
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// pageId
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var id = el || "index", index = id.indexOf(".");
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if (index > 0) {
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id = id.substring(0, index);
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}
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html.id = id.toLowerCase() + conf.page;
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// on root?
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if (!i) {
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pushClass("root" + conf.section);
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}
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}
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});
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// basic screen info
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api.screen = {
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height: win.screen.height,
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width : win.screen.width
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};
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// viewport resolutions: w-100, lt-480, lt-1024 ...
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function screenSize() {
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// remove earlier sizes
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html.className = html.className.replace(/ (w-|eq-|gt-|gte-|lt-|lte-|portrait|no-portrait|landscape|no-landscape)\d+/g, "");
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// Viewport width
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var iw = win.innerWidth || html.clientWidth,
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ow = win.outerWidth || win.screen.width;
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api.screen.innerWidth = iw;
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api.screen.outerWidth = ow;
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// for debugging purposes, not really useful for anything else
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pushClass("w-" + iw);
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each(conf.screens, function(width) {
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if (iw > width) {
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if (conf.screensCss.gt) {
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pushClass("gt-" + width);
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}
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if (conf.screensCss.gte) {
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pushClass("gte-" + width);
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}
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} else if (iw < width) {
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if (conf.screensCss.lt) {
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pushClass("lt-" + width);
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}
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if (conf.screensCss.lte) {
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pushClass("lte-" + width);
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}
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} else if (iw === width) {
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if (conf.screensCss.lte) {
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pushClass("lte-" + width);
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}
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if (conf.screensCss.eq) {
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pushClass("e-q" + width);
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}
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if (conf.screensCss.gte) {
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pushClass("gte-" + width);
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}
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}
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});
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// Viewport height
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var ih = win.innerHeight || html.clientHeight,
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oh = win.outerHeight || win.screen.height;
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api.screen.innerHeight = ih;
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api.screen.outerHeight = oh;
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// no need for onChange event to detect this
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api.feature("portrait" , (ih > iw));
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api.feature("landscape", (ih < iw));
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}
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screenSize();
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// Throttle navigators from triggering too many resize events
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var resizeId = 0;
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function onResize() {
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win.clearTimeout(resizeId);
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resizeId = win.setTimeout(screenSize, 50);
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}
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// Manually attach, as to not overwrite existing handler
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if (win.addEventListener) {
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win.addEventListener("resize", onResize, false);
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} else {
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// IE8 and less
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win.attachEvent("onresize", onResize);
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}
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}(window));
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