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remove head.min.js in favor of simple built-in script loader

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This commit is contained in:
Hakim El Hattab 2018-10-04 14:48:01 +02:00
parent d5cf3fa13c
commit 29b0e86089
22 changed files with 200 additions and 42 deletions
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1
demo.html
View File

@ -384,7 +384,6 @@ Reveal.addEventListener( 'customevent', function() {
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>

1
index.html
View File

@ -29,7 +29,6 @@
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>

90
js/reveal.js
View File

@ -436,41 +436,28 @@
scriptsToPreload = 0;
// Called once synchronous scripts finish loading
function proceed() {
if( scriptsAsync.length ) {
function afterSynchronousScriptsLoaded() {
// Load asynchronous scripts
head.js.apply( null, scriptsAsync );
if( scriptsAsync.length ) {
scriptsAsync.forEach( function( s ) {
loadScript( s.src, s.callback );
} );
}
start();
}
function loadScript( s ) {
head.ready( s.src.match( /([\w\d_\-]*)\.?js(\?[\w\d.=&]*)?$|[^\\\/]*$/i )[0], function() {
// Extension may contain callback functions
if( typeof s.callback === 'function' ) {
s.callback.apply( this );
}
if( --scriptsToPreload === 0 ) {
proceed();
}
});
}
for( var i = 0, len = config.dependencies.length; i < len; i++ ) {
var s = config.dependencies[i];
// Load if there's no condition or the condition is truthy
if( !s.condition || s.condition() ) {
if( s.async ) {
scriptsAsync.push( s.src );
scriptsAsync.push( s );
}
else {
scripts.push( s.src );
scripts.push( s );
}
loadScript( s );
}
}
@ -478,14 +465,73 @@
scriptsToPreload = scripts.length;
// Load synchronous scripts
head.js.apply( null, scripts );
scripts.forEach( function( s ) {
loadScript( s.src, function() {
if( typeof s.callback === 'function' ) s.callback();
if( --scriptsToPreload === 0 ) {
afterSynchronousScriptsLoaded();
}
} );
} );
}
else {
proceed();
afterSynchronousScriptsLoaded();
}
}
/**
* Loads a JavaScript file from the given URL and executes it.
*
* @param {string} url Address of the .js file to load
* @param {function} callback Method to invoke when the script
* has loaded and executed
*/
function loadScript( url, callback ) {
var script = document.createElement( 'script' );
script.type = 'text/javascript';
script.async = false;
script.defer = false;
script.src = url;
if( callback ) {
// Success callback
script.onload = script.onreadystatechange = function( event ) {
if( event.type === "load" || (/loaded|complete/.test( script.readyState ) ) ) {
// Kill event listeners
script.onload = script.onreadystatechange = script.onerror = null;
callback();
}
};
// Error callback
script.onerror = function( err ) {
// Kill event listeners
script.onload = script.onreadystatechange = script.onerror = null;
callback( new Error( 'Failed loading script: ' + script.src + '\n' + err) );
};
}
// Append the script at the end of <head>
var head = document.querySelector( 'head' );
head.insertBefore( script, head.lastChild );
}
/**
* Starts up reveal.js by binding input events and navigating
* to the current URL deeplink if there is one.

6
lib/js/head.min.js vendored
View File

@ -1,6 +0,0 @@
/*! head.core - v1.0.2 */
(function(n,t){"use strict";function r(n){a[a.length]=n}function k(n){var t=new RegExp(" ?\\b"+n+"\\b");c.className=c.className.replace(t,"")}function p(n,t){for(var i=0,r=n.length;i<r;i++)t.call(n,n[i],i)}function tt(){var t,e,f,o;c.className=c.className.replace(/ (w-|eq-|gt-|gte-|lt-|lte-|portrait|no-portrait|landscape|no-landscape)\d+/g,"");t=n.innerWidth||c.clientWidth;e=n.outerWidth||n.screen.width;u.screen.innerWidth=t;u.screen.outerWidth=e;r("w-"+t);p(i.screens,function(n){t>n?(i.screensCss.gt&&r("gt-"+n),i.screensCss.gte&&r("gte-"+n)):t<n?(i.screensCss.lt&&r("lt-"+n),i.screensCss.lte&&r("lte-"+n)):t===n&&(i.screensCss.lte&&r("lte-"+n),i.screensCss.eq&&r("e-q"+n),i.screensCss.gte&&r("gte-"+n))});f=n.innerHeight||c.clientHeight;o=n.outerHeight||n.screen.height;u.screen.innerHeight=f;u.screen.outerHeight=o;u.feature("portrait",f>t);u.feature("landscape",f<t)}function it(){n.clearTimeout(b);b=n.setTimeout(tt,50)}var y=n.document,rt=n.navigator,ut=n.location,c=y.documentElement,a=[],i={screens:[240,320,480,640,768,800,1024,1280,1440,1680,1920],screensCss:{gt:!0,gte:!1,lt:!0,lte:!1,eq:!1},browsers:[{ie:{min:6,max:11}}],browserCss:{gt:!0,gte:!1,lt:!0,lte:!1,eq:!0},html5:!0,page:"-page",section:"-section",head:"head"},v,u,s,w,o,h,l,d,f,g,nt,e,b;if(n.head_conf)for(v in n.head_conf)n.head_conf[v]!==t&&(i[v]=n.head_conf[v]);u=n[i.head]=function(){u.ready.apply(null,arguments)};u.feature=function(n,t,i){return n?(Object.prototype.toString.call(t)==="[object Function]"&&(t=t.call()),r((t?"":"no-")+n),u[n]=!!t,i||(k("no-"+n),k(n),u.feature()),u):(c.className+=" "+a.join(" "),a=[],u)};u.feature("js",!0);s=rt.userAgent.toLowerCase();w=/mobile|android|kindle|silk|midp|phone|(windows .+arm|touch)/.test(s);u.feature("mobile",w,!0);u.feature("desktop",!w,!0);s=/(chrome|firefox)[ \/]([\w.]+)/.exec(s)||/(iphone|ipad|ipod)(?:.*version)?[ \/]([\w.]+)/.exec(s)||/(android)(?:.*version)?[ \/]([\w.]+)/.exec(s)||/(webkit|opera)(?:.*version)?[ \/]([\w.]+)/.exec(s)||/(msie) ([\w.]+)/.exec(s)||/(trident).+rv:(\w.)+/.exec(s)||[];o=s[1];h=parseFloat(s[2]);switch(o){case"msie":case"trident":o="ie";h=y.documentMode||h;break;case"firefox":o="ff";break;case"ipod":case"ipad":case"iphone":o="ios";break;case"webkit":o="safari"}for(u.browser={name:o,version:h},u.browser[o]=!0,l=0,d=i.browsers.length;l<d;l++)for(f in i.browsers[l])if(o===f)for(r(f),g=i.browsers[l][f].min,nt=i.browsers[l][f].max,e=g;e<=nt;e++)h>e?(i.browserCss.gt&&r("gt-"+f+e),i.browserCss.gte&&r("gte-"+f+e)):h<e?(i.browserCss.lt&&r("lt-"+f+e),i.browserCss.lte&&r("lte-"+f+e)):h===e&&(i.browserCss.lte&&r("lte-"+f+e),i.browserCss.eq&&r("eq-"+f+e),i.browserCss.gte&&r("gte-"+f+e));else r("no-"+f);r(o);r(o+parseInt(h,10));i.html5&&o==="ie"&&h<9&&p("abbr|article|aside|audio|canvas|details|figcaption|figure|footer|header|hgroup|main|mark|meter|nav|output|progress|section|summary|time|video".split("|"),function(n){y.createElement(n)});p(ut.pathname.split("/"),function(n,u){if(this.length>2&&this[u+1]!==t)u&&r(this.slice(u,u+1).join("-").toLowerCase()+i.section);else{var f=n||"index",e=f.indexOf(".");e>0&&(f=f.substring(0,e));c.id=f.toLowerCase()+i.page;u||r("root"+i.section)}});u.screen={height:n.screen.height,width:n.screen.width};tt();b=0;n.addEventListener?n.addEventListener("resize",it,!1):n.attachEvent("onresize",it)})(window);
/*! head.css3 - v1.0.0 */
(function(n,t){"use strict";function a(n){for(var r in n)if(i[n[r]]!==t)return!0;return!1}function r(n){var t=n.charAt(0).toUpperCase()+n.substr(1),i=(n+" "+c.join(t+" ")+t).split(" ");return!!a(i)}var h=n.document,o=h.createElement("i"),i=o.style,s=" -o- -moz- -ms- -webkit- -khtml- ".split(" "),c="Webkit Moz O ms Khtml".split(" "),l=n.head_conf&&n.head_conf.head||"head",u=n[l],f={gradient:function(){var n="background-image:";return i.cssText=(n+s.join("gradient(linear,left top,right bottom,from(#9f9),to(#fff));"+n)+s.join("linear-gradient(left top,#eee,#fff);"+n)).slice(0,-n.length),!!i.backgroundImage},rgba:function(){return i.cssText="background-color:rgba(0,0,0,0.5)",!!i.backgroundColor},opacity:function(){return o.style.opacity===""},textshadow:function(){return i.textShadow===""},multiplebgs:function(){i.cssText="background:url(https://),url(https://),red url(https://)";var n=(i.background||"").match(/url/g);return Object.prototype.toString.call(n)==="[object Array]"&&n.length===3},boxshadow:function(){return r("boxShadow")},borderimage:function(){return r("borderImage")},borderradius:function(){return r("borderRadius")},cssreflections:function(){return r("boxReflect")},csstransforms:function(){return r("transform")},csstransitions:function(){return r("transition")},touch:function(){return"ontouchstart"in n},retina:function(){return n.devicePixelRatio>1},fontface:function(){var t=u.browser.name,n=u.browser.version;switch(t){case"ie":return n>=9;case"chrome":return n>=13;case"ff":return n>=6;case"ios":return n>=5;case"android":return!1;case"webkit":return n>=5.1;case"opera":return n>=10;default:return!1}}};for(var e in f)f[e]&&u.feature(e,f[e].call(),!0);u.feature()})(window);
/*! head.load - v1.0.3 */
(function(n,t){"use strict";function w(){}function u(n,t){if(n){typeof n=="object"&&(n=[].slice.call(n));for(var i=0,r=n.length;i<r;i++)t.call(n,n[i],i)}}function it(n,i){var r=Object.prototype.toString.call(i).slice(8,-1);return i!==t&&i!==null&&r===n}function s(n){return it("Function",n)}function a(n){return it("Array",n)}function et(n){var i=n.split("/"),t=i[i.length-1],r=t.indexOf("?");return r!==-1?t.substring(0,r):t}function f(n){(n=n||w,n._done)||(n(),n._done=1)}function ot(n,t,r,u){var f=typeof n=="object"?n:{test:n,success:!t?!1:a(t)?t:[t],failure:!r?!1:a(r)?r:[r],callback:u||w},e=!!f.test;return e&&!!f.success?(f.success.push(f.callback),i.load.apply(null,f.success)):e||!f.failure?u():(f.failure.push(f.callback),i.load.apply(null,f.failure)),i}function v(n){var t={},i,r;if(typeof n=="object")for(i in n)!n[i]||(t={name:i,url:n[i]});else t={name:et(n),url:n};return(r=c[t.name],r&&r.url===t.url)?r:(c[t.name]=t,t)}function y(n){n=n||c;for(var t in n)if(n.hasOwnProperty(t)&&n[t].state!==l)return!1;return!0}function st(n){n.state=ft;u(n.onpreload,function(n){n.call()})}function ht(n){n.state===t&&(n.state=nt,n.onpreload=[],rt({url:n.url,type:"cache"},function(){st(n)}))}function ct(){var n=arguments,t=n[n.length-1],r=[].slice.call(n,1),f=r[0];return(s(t)||(t=null),a(n[0]))?(n[0].push(t),i.load.apply(null,n[0]),i):(f?(u(r,function(n){s(n)||!n||ht(v(n))}),b(v(n[0]),s(f)?f:function(){i.load.apply(null,r)})):b(v(n[0])),i)}function lt(){var n=arguments,t=n[n.length-1],r={};return(s(t)||(t=null),a(n[0]))?(n[0].push(t),i.load.apply(null,n[0]),i):(u(n,function(n){n!==t&&(n=v(n),r[n.name]=n)}),u(n,function(n){n!==t&&(n=v(n),b(n,function(){y(r)&&f(t)}))}),i)}function b(n,t){if(t=t||w,n.state===l){t();return}if(n.state===tt){i.ready(n.name,t);return}if(n.state===nt){n.onpreload.push(function(){b(n,t)});return}n.state=tt;rt(n,function(){n.state=l;t();u(h[n.name],function(n){f(n)});o&&y()&&u(h.ALL,function(n){f(n)})})}function at(n){n=n||"";var t=n.split("?")[0].split(".");return t[t.length-1].toLowerCase()}function rt(t,i){function e(t){t=t||n.event;u.onload=u.onreadystatechange=u.onerror=null;i()}function o(f){f=f||n.event;(f.type==="load"||/loaded|complete/.test(u.readyState)&&(!r.documentMode||r.documentMode<9))&&(n.clearTimeout(t.errorTimeout),n.clearTimeout(t.cssTimeout),u.onload=u.onreadystatechange=u.onerror=null,i())}function s(){if(t.state!==l&&t.cssRetries<=20){for(var i=0,f=r.styleSheets.length;i<f;i++)if(r.styleSheets[i].href===u.href){o({type:"load"});return}t.cssRetries++;t.cssTimeout=n.setTimeout(s,250)}}var u,h,f;i=i||w;h=at(t.url);h==="css"?(u=r.createElement("link"),u.type="text/"+(t.type||"css"),u.rel="stylesheet",u.href=t.url,t.cssRetries=0,t.cssTimeout=n.setTimeout(s,500)):(u=r.createElement("script"),u.type="text/"+(t.type||"javascript"),u.src=t.url);u.onload=u.onreadystatechange=o;u.onerror=e;u.async=!1;u.defer=!1;t.errorTimeout=n.setTimeout(function(){e({type:"timeout"})},7e3);f=r.head||r.getElementsByTagName("head")[0];f.insertBefore(u,f.lastChild)}function vt(){for(var t,u=r.getElementsByTagName("script"),n=0,f=u.length;n<f;n++)if(t=u[n].getAttribute("data-headjs-load"),!!t){i.load(t);return}}function yt(n,t){var v,p,e;return n===r?(o?f(t):d.push(t),i):(s(n)&&(t=n,n="ALL"),a(n))?(v={},u(n,function(n){v[n]=c[n];i.ready(n,function(){y(v)&&f(t)})}),i):typeof n!="string"||!s(t)?i:(p=c[n],p&&p.state===l||n==="ALL"&&y()&&o)?(f(t),i):(e=h[n],e?e.push(t):e=h[n]=[t],i)}function e(){if(!r.body){n.clearTimeout(i.readyTimeout);i.readyTimeout=n.setTimeout(e,50);return}o||(o=!0,vt(),u(d,function(n){f(n)}))}function k(){r.addEventListener?(r.removeEventListener("DOMContentLoaded",k,!1),e()):r.readyState==="complete"&&(r.detachEvent("onreadystatechange",k),e())}var r=n.document,d=[],h={},c={},ut="async"in r.createElement("script")||"MozAppearance"in r.documentElement.style||n.opera,o,g=n.head_conf&&n.head_conf.head||"head",i=n[g]=n[g]||function(){i.ready.apply(null,arguments)},nt=1,ft=2,tt=3,l=4,p;if(r.readyState==="complete")e();else if(r.addEventListener)r.addEventListener("DOMContentLoaded",k,!1),n.addEventListener("load",e,!1);else{r.attachEvent("onreadystatechange",k);n.attachEvent("onload",e);p=!1;try{p=!n.frameElement&&r.documentElement}catch(wt){}p&&p.doScroll&&function pt(){if(!o){try{p.doScroll("left")}catch(t){n.clearTimeout(i.readyTimeout);i.readyTimeout=n.setTimeout(pt,50);return}e()}}()}i.load=i.js=ut?lt:ct;i.test=ot;i.ready=yt;i.ready(r,function(){y()&&u(h.ALL,function(n){f(n)});i.feature&&i.feature("domloaded",!0)})})(window);

1
plugin/markdown/example.html
View File

@ -109,7 +109,6 @@
</div>
</div>
<script src="../../lib/js/head.min.js"></script>
<script src="../../js/reveal.js"></script>
<script>

1
test/assets/external-script-a.js Normal file
View File

@ -0,0 +1 @@
window.externalScriptSequence += 'A';

1
test/assets/external-script-b.js Normal file
View File

@ -0,0 +1 @@
window.externalScriptSequence += 'B';

1
test/assets/external-script-c.js Normal file
View File

@ -0,0 +1 @@
window.externalScriptSequence += 'C';

1
test/assets/external-script-d.js Normal file
View File

@ -0,0 +1 @@
window.externalScriptSequence += 'D';

1
test/examples/embedded-media.html
View File

@ -34,7 +34,6 @@
</div>
<script src="../../lib/js/head.min.js"></script>
<script src="../../js/reveal.js"></script>
<script>

1
test/examples/math.html
View File

@ -159,7 +159,6 @@
</div>
<script src="../../lib/js/head.min.js"></script>
<script src="../../js/reveal.js"></script>
<script>

1
test/examples/slide-backgrounds.html
View File

@ -122,7 +122,6 @@
</div>
<script src="../../lib/js/head.min.js"></script>
<script src="../../js/reveal.js"></script>
<script>

1
test/examples/slide-transitions.html
View File

@ -81,7 +81,6 @@
</div>
<script src="../../lib/js/head.min.js"></script>
<script src="../../js/reveal.js"></script>
<script>

74
test/test-async-dependencies.html Normal file
View File

@ -0,0 +1,74 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - Test Async Dependencies</title>
<link rel="stylesheet" href="../css/reveal.css">
<link rel="stylesheet" href="qunit-2.5.0.css">
</head>
<body style="overflow: auto;">
<div id="qunit"></div>
<div id="qunit-fixture"></div>
<div class="reveal" style="display: none;">
<div class="slides">
<section>Slide content</section>
</div>
</div>
<script src="../js/reveal.js"></script>
<script src="qunit-2.5.0.js"></script>
<script>
window.externalScriptSequence = '';
QUnit.module( 'Async Dependencies' );
var scriptCount = 0;
QUnit.test( 'Async scripts are loaded', function( assert ) {
assert.expect( 5 );
var done = assert.async( 5 );
function callback( event ) {
if( window.externalScriptSequence.length === 1 ) {
assert.ok( window.externalScriptSequence === 'A', 'first callback was sync script' );
}
else {
assert.ok( true, 'async script loaded' );
}
if( window.externalScriptSequence.length === 4 ) {
assert.ok( window.externalScriptSequence.indexOf( 'A' ) !== -1 &&
window.externalScriptSequence.indexOf( 'B' ) !== -1 &&
window.externalScriptSequence.indexOf( 'C' ) !== -1 &&
window.externalScriptSequence.indexOf( 'D' ) !== -1, 'four unique scripts were loaded' );
}
done();
scriptCount ++;
}
Reveal.initialize({
dependencies: [
{ src: 'assets/external-script-a.js', async: false, callback: callback },
{ src: 'assets/external-script-b.js', async: true, callback: callback },
{ src: 'assets/external-script-c.js', async: true, callback: callback },
{ src: 'assets/external-script-d.js', async: true, callback: callback }
]
});
});
</script>
</body>
</html>

54
test/test-dependencies.html Normal file
View File

@ -0,0 +1,54 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - Test Dependencies</title>
<link rel="stylesheet" href="../css/reveal.css">
<link rel="stylesheet" href="qunit-2.5.0.css">
</head>
<body style="overflow: auto;">
<div id="qunit"></div>
<div id="qunit-fixture"></div>
<div class="reveal" style="display: none;">
<div class="slides">
<section>Slide content</section>
</div>
</div>
<script src="../js/reveal.js"></script>
<script src="qunit-2.5.0.js"></script>
<script>
window.externalScriptSequence = '';
Reveal.addEventListener( 'ready', function() {
QUnit.module( 'Dependencies' );
QUnit.test( 'Load synchronous scripts', function( assert ) {
assert.strictEqual( window.externalScriptSequence, 'ABC', 'Loaded and executed in order' );
});
} );
Reveal.initialize({
dependencies: [
{ src: 'assets/external-script-a.js' },
{ src: 'assets/external-script-b.js' },
{ src: 'assets/external-script-c.js' }
]
});
</script>
</body>
</html>

1
test/test-markdown-element-attributes.html
View File

@ -122,7 +122,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="../plugin/markdown/marked.js"></script>
<script src="../plugin/markdown/markdown.js"></script>

1
test/test-markdown-external.html
View File

@ -23,7 +23,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="../plugin/highlight/highlight.js"></script>
<script src="../plugin/markdown/marked.js"></script>

1
test/test-markdown-options.html
View File

@ -31,7 +31,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="qunit-2.5.0.js"></script>

1
test/test-markdown-slide-attributes.html
View File

@ -116,7 +116,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="../plugin/markdown/marked.js"></script>
<script src="../plugin/markdown/markdown.js"></script>

1
test/test-markdown.html
View File

@ -40,7 +40,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="../plugin/markdown/marked.js"></script>
<script src="../plugin/markdown/markdown.js"></script>

1
test/test-pdf.html
View File

@ -73,7 +73,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="qunit-2.5.0.js"></script>

1
test/test.html
View File

@ -76,7 +76,6 @@
</div>
<script src="../lib/js/head.min.js"></script>
<script src="../js/reveal.js"></script>
<script src="qunit-2.5.0.js"></script>