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style.js
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style.js
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/*jshint strict: true, browser:true, jquery: true*/
/*globals define*/
// Module w3c/style
// Inserts a link to the appropriate W3C style for the specification's maturity level.
// CONFIGURATION
// - specStatus: the short code for the specification's maturity level or type (required)
"use strict";
define([
"core/utils",
"core/pubsubhub",
], function(utils, pubsubhub) {
function attachFixupScript(doc, version) {
var script = doc.createElement("script");
var helperScript = "https://www.w3.org/scripts/TR/{version}/fixup.js"
.replace("{version}", version);
script.src = helperScript;
doc.body.appendChild(script);
}
// Make a best effort to attach meta viewport at the top of the head.
// Other plugins might subsequently push it down, but at least we start
// at the right place. When ReSpec exports the HTML, it again moves the
// meta viewport to the top of the head - so to make sure it's the first
// thing the browser sees. See js/ui/save-html.js.
function createMetaViewport() {
var meta = document.createElement("meta");
meta.name = "viewport";
var contentProps = {
"width": "device-width",
"initial-scale": "1",
"shrink-to-fit": "no",
};
meta.content = utils.toKeyValuePairs(contentProps).replace(/\"/g, "")
return meta;
}
function createBaseStyle() {
var link = document.createElement("link");
link.rel = "stylesheet";
link.href = "https://www.w3.org/StyleSheets/TR/2016/base.css";
link.classList.add("removeOnSave");
return link;
}
function selectStyleVersion(styleVersion) {
var version = "";
switch (styleVersion) {
case null:
case true:
version = new Date().getFullYear().toString();
break;
default:
if (styleVersion && !isNaN(styleVersion)) {
version = styleVersion.toString().trim();
}
}
return version;
}
function createResourceHints() {
var resourceHints = [{
hint: "preconnect", // for W3C styles and scripts.
href: "https://www.w3.org",
}, {
hint: "preload", // all specs need it, and we attach it on end-all.
href: "https://www.w3.org/scripts/TR/2016/fixup.js",
as: "script",
}, {
hint: "preload", // all specs include on base.css.
href: "https://www.w3.org/StyleSheets/TR/2016/base.css",
as: "style",
}, {
hint: "preload", // all specs show the logo.
href: "https://www.w3.org/StyleSheets/TR/2016/logos/W3C",
as: "image",
}]
.map(utils.createResourceHint.bind(utils))
.reduce(function(frag, link) {
frag.appendChild(link)
return frag;
}, document.createDocumentFragment());
return resourceHints;
}
// Collect elements for insertion
var elements = createResourceHints();
// Opportunistically apply base style
elements.appendChild(createBaseStyle());
if (!document.head.querySelector("meta[name=viewport]")) {
// Make meta viewport the first element in the head.
elements.insertBefore(createMetaViewport(), elements.firstChild);
}
document.head.insertBefore(elements, document.head.firstChild);
return {
run: function(conf, doc, cb) {
if (!conf.specStatus) {
var warn = "'specStatus' missing from ReSpec config. Defaulting to 'base'.";
conf.specStatus = "base";
pubsubhub.pub("warn", warn);
}
var styleBaseURL = "https://www.w3.org/StyleSheets/TR/{version}";
var finalStyleURL = "";
var styleFile = "W3C-";
// Figure out which style file to use.
switch (conf.specStatus.toUpperCase()) {
case "CG-DRAFT":
case "CG-FINAL":
case "BG-DRAFT":
case "BG-FINAL":
styleFile = conf.specStatus.toLowerCase();
break;
case "FPWD":
case "LC":
case "WD-NOTE":
case "LC-NOTE":
styleFile += "WD";
break;
case "WG-NOTE":
case "FPWD-NOTE":
styleFile += "WG-NOTE.css";
break;
case "UNOFFICIAL":
styleFile += "UD";
break;
case "FINDING":
case "FINDING-DRAFT":
case "BASE":
styleFile = "base.css";
break;
default:
styleFile += conf.specStatus;
}
// Select between released styles and experimental style.
var version = selectStyleVersion(conf.useExperimentalStyles || "2016");
// Attach W3C fixup script after we are done.
if (version) {
var subscribeKey = pubsubhub.sub("end-all", function() {
attachFixupScript(doc, version);
pubsubhub.unsub(subscribeKey);
});
}
var finalVersionPath = (version) ? version + "/" : "";
finalStyleURL = styleBaseURL.replace("{version}", finalVersionPath);
finalStyleURL += styleFile;
utils.linkCSS(doc, finalStyleURL);
cb();
}
};
});