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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/style-loader/lib/addStyles.js
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-rw-r--r--node_modules/style-loader/lib/addStyles.js398
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diff --git a/node_modules/style-loader/lib/addStyles.js b/node_modules/style-loader/lib/addStyles.js
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+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+*/
+
+var stylesInDom = {};
+
+var memoize = function (fn) {
+ var memo;
+
+ return function () {
+ if (typeof memo === "undefined") memo = fn.apply(this, arguments);
+ return memo;
+ };
+};
+
+var isOldIE = memoize(function () {
+ // Test for IE <= 9 as proposed by Browserhacks
+ // @see http://browserhacks.com/#hack-e71d8692f65334173fee715c222cb805
+ // Tests for existence of standard globals is to allow style-loader
+ // to operate correctly into non-standard environments
+ // @see https://github.com/webpack-contrib/style-loader/issues/177
+ return window && document && document.all && !window.atob;
+});
+
+var getTarget = function (target, parent) {
+ if (parent){
+ return parent.querySelector(target);
+ }
+ return document.querySelector(target);
+};
+
+var getElement = (function (fn) {
+ var memo = {};
+
+ return function(target, parent) {
+ // If passing function in options, then use it for resolve "head" element.
+ // Useful for Shadow Root style i.e
+ // {
+ // insertInto: function () { return document.querySelector("#foo").shadowRoot }
+ // }
+ if (typeof target === 'function') {
+ return target();
+ }
+ if (typeof memo[target] === "undefined") {
+ var styleTarget = getTarget.call(this, target, parent);
+ // Special case to return head of iframe instead of iframe itself
+ if (window.HTMLIFrameElement && styleTarget instanceof window.HTMLIFrameElement) {
+ try {
+ // This will throw an exception if access to iframe is blocked
+ // due to cross-origin restrictions
+ styleTarget = styleTarget.contentDocument.head;
+ } catch(e) {
+ styleTarget = null;
+ }
+ }
+ memo[target] = styleTarget;
+ }
+ return memo[target]
+ };
+})();
+
+var singleton = null;
+var singletonCounter = 0;
+var stylesInsertedAtTop = [];
+
+var fixUrls = require("./urls");
+
+module.exports = function(list, options) {
+ if (typeof DEBUG !== "undefined" && DEBUG) {
+ if (typeof document !== "object") throw new Error("The style-loader cannot be used in a non-browser environment");
+ }
+
+ options = options || {};
+
+ options.attrs = typeof options.attrs === "object" ? options.attrs : {};
+
+ // Force single-tag solution on IE6-9, which has a hard limit on the # of <style>
+ // tags it will allow on a page
+ if (!options.singleton && typeof options.singleton !== "boolean") options.singleton = isOldIE();
+
+ // By default, add <style> tags to the <head> element
+ if (!options.insertInto) options.insertInto = "head";
+
+ // By default, add <style> tags to the bottom of the target
+ if (!options.insertAt) options.insertAt = "bottom";
+
+ var styles = listToStyles(list, options);
+
+ addStylesToDom(styles, options);
+
+ return function update (newList) {
+ var mayRemove = [];
+
+ for (var i = 0; i < styles.length; i++) {
+ var item = styles[i];
+ var domStyle = stylesInDom[item.id];
+
+ domStyle.refs--;
+ mayRemove.push(domStyle);
+ }
+
+ if(newList) {
+ var newStyles = listToStyles(newList, options);
+ addStylesToDom(newStyles, options);
+ }
+
+ for (var i = 0; i < mayRemove.length; i++) {
+ var domStyle = mayRemove[i];
+
+ if(domStyle.refs === 0) {
+ for (var j = 0; j < domStyle.parts.length; j++) domStyle.parts[j]();
+
+ delete stylesInDom[domStyle.id];
+ }
+ }
+ };
+};
+
+function addStylesToDom (styles, options) {
+ for (var i = 0; i < styles.length; i++) {
+ var item = styles[i];
+ var domStyle = stylesInDom[item.id];
+
+ if(domStyle) {
+ domStyle.refs++;
+
+ for(var j = 0; j < domStyle.parts.length; j++) {
+ domStyle.parts[j](item.parts[j]);
+ }
+
+ for(; j < item.parts.length; j++) {
+ domStyle.parts.push(addStyle(item.parts[j], options));
+ }
+ } else {
+ var parts = [];
+
+ for(var j = 0; j < item.parts.length; j++) {
+ parts.push(addStyle(item.parts[j], options));
+ }
+
+ stylesInDom[item.id] = {id: item.id, refs: 1, parts: parts};
+ }
+ }
+}
+
+function listToStyles (list, options) {
+ var styles = [];
+ var newStyles = {};
+
+ for (var i = 0; i < list.length; i++) {
+ var item = list[i];
+ var id = options.base ? item[0] + options.base : item[0];
+ var css = item[1];
+ var media = item[2];
+ var sourceMap = item[3];
+ var part = {css: css, media: media, sourceMap: sourceMap};
+
+ if(!newStyles[id]) styles.push(newStyles[id] = {id: id, parts: [part]});
+ else newStyles[id].parts.push(part);
+ }
+
+ return styles;
+}
+
+function insertStyleElement (options, style) {
+ var target = getElement(options.insertInto)
+
+ if (!target) {
+ throw new Error("Couldn't find a style target. This probably means that the value for the 'insertInto' parameter is invalid.");
+ }
+
+ var lastStyleElementInsertedAtTop = stylesInsertedAtTop[stylesInsertedAtTop.length - 1];
+
+ if (options.insertAt === "top") {
+ if (!lastStyleElementInsertedAtTop) {
+ target.insertBefore(style, target.firstChild);
+ } else if (lastStyleElementInsertedAtTop.nextSibling) {
+ target.insertBefore(style, lastStyleElementInsertedAtTop.nextSibling);
+ } else {
+ target.appendChild(style);
+ }
+ stylesInsertedAtTop.push(style);
+ } else if (options.insertAt === "bottom") {
+ target.appendChild(style);
+ } else if (typeof options.insertAt === "object" && options.insertAt.before) {
+ var nextSibling = getElement(options.insertAt.before, target);
+ target.insertBefore(style, nextSibling);
+ } else {
+ throw new Error("[Style Loader]\n\n Invalid value for parameter 'insertAt' ('options.insertAt') found.\n Must be 'top', 'bottom', or Object.\n (https://github.com/webpack-contrib/style-loader#insertat)\n");
+ }
+}
+
+function removeStyleElement (style) {
+ if (style.parentNode === null) return false;
+ style.parentNode.removeChild(style);
+
+ var idx = stylesInsertedAtTop.indexOf(style);
+ if(idx >= 0) {
+ stylesInsertedAtTop.splice(idx, 1);
+ }
+}
+
+function createStyleElement (options) {
+ var style = document.createElement("style");
+
+ if(options.attrs.type === undefined) {
+ options.attrs.type = "text/css";
+ }
+
+ if(options.attrs.nonce === undefined) {
+ var nonce = getNonce();
+ if (nonce) {
+ options.attrs.nonce = nonce;
+ }
+ }
+
+ addAttrs(style, options.attrs);
+ insertStyleElement(options, style);
+
+ return style;
+}
+
+function createLinkElement (options) {
+ var link = document.createElement("link");
+
+ if(options.attrs.type === undefined) {
+ options.attrs.type = "text/css";
+ }
+ options.attrs.rel = "stylesheet";
+
+ addAttrs(link, options.attrs);
+ insertStyleElement(options, link);
+
+ return link;
+}
+
+function addAttrs (el, attrs) {
+ Object.keys(attrs).forEach(function (key) {
+ el.setAttribute(key, attrs[key]);
+ });
+}
+
+function getNonce() {
+ if (typeof __webpack_nonce__ === 'undefined') {
+ return null;
+ }
+
+ return __webpack_nonce__;
+}
+
+function addStyle (obj, options) {
+ var style, update, remove, result;
+
+ // If a transform function was defined, run it on the css
+ if (options.transform && obj.css) {
+ result = options.transform(obj.css);
+
+ if (result) {
+ // If transform returns a value, use that instead of the original css.
+ // This allows running runtime transformations on the css.
+ obj.css = result;
+ } else {
+ // If the transform function returns a falsy value, don't add this css.
+ // This allows conditional loading of css
+ return function() {
+ // noop
+ };
+ }
+ }
+
+ if (options.singleton) {
+ var styleIndex = singletonCounter++;
+
+ style = singleton || (singleton = createStyleElement(options));
+
+ update = applyToSingletonTag.bind(null, style, styleIndex, false);
+ remove = applyToSingletonTag.bind(null, style, styleIndex, true);
+
+ } else if (
+ obj.sourceMap &&
+ typeof URL === "function" &&
+ typeof URL.createObjectURL === "function" &&
+ typeof URL.revokeObjectURL === "function" &&
+ typeof Blob === "function" &&
+ typeof btoa === "function"
+ ) {
+ style = createLinkElement(options);
+ update = updateLink.bind(null, style, options);
+ remove = function () {
+ removeStyleElement(style);
+
+ if(style.href) URL.revokeObjectURL(style.href);
+ };
+ } else {
+ style = createStyleElement(options);
+ update = applyToTag.bind(null, style);
+ remove = function () {
+ removeStyleElement(style);
+ };
+ }
+
+ update(obj);
+
+ return function updateStyle (newObj) {
+ if (newObj) {
+ if (
+ newObj.css === obj.css &&
+ newObj.media === obj.media &&
+ newObj.sourceMap === obj.sourceMap
+ ) {
+ return;
+ }
+
+ update(obj = newObj);
+ } else {
+ remove();
+ }
+ };
+}
+
+var replaceText = (function () {
+ var textStore = [];
+
+ return function (index, replacement) {
+ textStore[index] = replacement;
+
+ return textStore.filter(Boolean).join('\n');
+ };
+})();
+
+function applyToSingletonTag (style, index, remove, obj) {
+ var css = remove ? "" : obj.css;
+
+ if (style.styleSheet) {
+ style.styleSheet.cssText = replaceText(index, css);
+ } else {
+ var cssNode = document.createTextNode(css);
+ var childNodes = style.childNodes;
+
+ if (childNodes[index]) style.removeChild(childNodes[index]);
+
+ if (childNodes.length) {
+ style.insertBefore(cssNode, childNodes[index]);
+ } else {
+ style.appendChild(cssNode);
+ }
+ }
+}
+
+function applyToTag (style, obj) {
+ var css = obj.css;
+ var media = obj.media;
+
+ if(media) {
+ style.setAttribute("media", media)
+ }
+
+ if(style.styleSheet) {
+ style.styleSheet.cssText = css;
+ } else {
+ while(style.firstChild) {
+ style.removeChild(style.firstChild);
+ }
+
+ style.appendChild(document.createTextNode(css));
+ }
+}
+
+function updateLink (link, options, obj) {
+ var css = obj.css;
+ var sourceMap = obj.sourceMap;
+
+ /*
+ If convertToAbsoluteUrls isn't defined, but sourcemaps are enabled
+ and there is no publicPath defined then lets turn convertToAbsoluteUrls
+ on by default. Otherwise default to the convertToAbsoluteUrls option
+ directly
+ */
+ var autoFixUrls = options.convertToAbsoluteUrls === undefined && sourceMap;
+
+ if (options.convertToAbsoluteUrls || autoFixUrls) {
+ css = fixUrls(css);
+ }
+
+ if (sourceMap) {
+ // http://stackoverflow.com/a/26603875
+ css += "\n/*# sourceMappingURL=data:application/json;base64," + btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))) + " */";
+ }
+
+ var blob = new Blob([css], { type: "text/css" });
+
+ var oldSrc = link.href;
+
+ link.href = URL.createObjectURL(blob);
+
+ if(oldSrc) URL.revokeObjectURL(oldSrc);
+}
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