report: add details-element polyfill for Edge #6465
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,295 @@ | ||
| /* | ||
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There was a problem hiding this comment. I know there's a thing with copying the report renderer files around, but is it possible to support this in the top-level There was a problem hiding this comment. also need a license file in parallel to it, and ideally a readme that says the source commit and lists the modifications made There was a problem hiding this comment. I'll do these as a followup. It adds too much complexity to the roll right now. |
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| Details Element Polyfill 2.0.4 | ||
| Copyright © 2018 Javan Makhmali | ||
| */ | ||
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| // COMPAT: Remove when Edge supports <details>/<summary> | ||
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| (function() { | ||
| var addAttributesForSummary, eventIsSignificant, findClosestElementWithTagName, findElementsWithTagName, onTogglingTrigger, polyfillFocusAndARIA, polyfillProperties, polyfillStyles, polyfillToggle, polyfillToggleEvent, support, triggerToggle, triggerToggleIfToggled; | ||
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| // Exit early if we're not in a page | ||
| // This line added by Lighthouse | ||
| if (typeof document === 'undefined' || !('createElement' in document)) return; | ||
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| support = { | ||
| element: (function() { | ||
| var closedHeight, element, openedHeight, parent, ref; | ||
| element = document.createElement("details"); | ||
| if (!("open" in element)) { | ||
| return false; | ||
| } | ||
| element.innerHTML = "<summary>a</summary>b"; | ||
| element.setAttribute("style", "position: absolute; left: -9999px"); | ||
| parent = (ref = document.body) != null ? ref : document.documentElement; | ||
| parent.appendChild(element); | ||
| closedHeight = element.offsetHeight; | ||
| element.open = true; | ||
| openedHeight = element.offsetHeight; | ||
| parent.removeChild(element); | ||
| return closedHeight !== openedHeight; | ||
| })(), | ||
| toggleEvent: (function() { | ||
| var element; | ||
| element = document.createElement("details"); | ||
| return "ontoggle" in element; | ||
| })() | ||
| }; | ||
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| if (support.element && support.toggleEvent) { | ||
| return; | ||
| } | ||
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| polyfillStyles = function() { | ||
| return document.head.insertAdjacentHTML("afterbegin", "<style>@charset\"UTF-8\";details:not([open])>*:not(summary){display:none;}details>summary{display:block;}details>summary::before{content:\"►\";padding-right:0.3rem;font-size:0.6rem;cursor:default;}details[open]>summary::before{content:\"▼\";}</style>"); | ||
| }; | ||
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| polyfillProperties = function() { | ||
| var open, prototype, removeAttribute, setAttribute; | ||
| prototype = document.createElement("details").constructor.prototype; | ||
| setAttribute = prototype.setAttribute, removeAttribute = prototype.removeAttribute; | ||
| open = Object.getOwnPropertyDescriptor(prototype, "open"); | ||
| return Object.defineProperties(prototype, { | ||
| open: { | ||
| get: function() { | ||
| var ref; | ||
| if (this.tagName === "DETAILS") { | ||
| return this.hasAttribute("open"); | ||
| } else { | ||
| return open != null ? (ref = open.get) != null ? ref.call(this) : void 0 : void 0; | ||
| } | ||
| }, | ||
| set: function(value) { | ||
| var ref; | ||
| if (this.tagName === "DETAILS") { | ||
| if (value) { | ||
| this.setAttribute("open", ""); | ||
| } else { | ||
| this.removeAttribute("open"); | ||
| } | ||
| return value; | ||
| } else { | ||
| return open != null ? (ref = open.set) != null ? ref.call(this, value) : void 0 : void 0; | ||
| } | ||
| } | ||
| }, | ||
| setAttribute: { | ||
| value: function(name, value) { | ||
| return triggerToggleIfToggled(this, (function(_this) { | ||
| return function() { | ||
| return setAttribute.call(_this, name, value); | ||
| }; | ||
| })(this)); | ||
| } | ||
| }, | ||
| removeAttribute: { | ||
| value: function(name) { | ||
| return triggerToggleIfToggled(this, (function(_this) { | ||
| return function() { | ||
| return removeAttribute.call(_this, name); | ||
| }; | ||
| })(this)); | ||
| } | ||
| } | ||
| }); | ||
| }; | ||
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| polyfillToggle = function() { | ||
| return onTogglingTrigger(function(element) { | ||
| var summary; | ||
| summary = element.querySelector("summary"); | ||
| if (element.hasAttribute("open")) { | ||
| element.removeAttribute("open"); | ||
| return summary.setAttribute("aria-expanded", false); | ||
| } else { | ||
| element.setAttribute("open", ""); | ||
| return summary.setAttribute("aria-expanded", true); | ||
| } | ||
| }); | ||
| }; | ||
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| polyfillFocusAndARIA = function() { | ||
| var i, len, observer, ref, summary; | ||
| ref = findElementsWithTagName(document.documentElement, "SUMMARY"); | ||
| for (i = 0, len = ref.length; i < len; i++) { | ||
| summary = ref[i]; | ||
| addAttributesForSummary(summary); | ||
| } | ||
| if (typeof MutationObserver !== "undefined" && MutationObserver !== null) { | ||
| observer = new MutationObserver(function(mutations) { | ||
| var addedNodes, j, len1, results, target; | ||
| results = []; | ||
| for (j = 0, len1 = mutations.length; j < len1; j++) { | ||
| addedNodes = mutations[j].addedNodes; | ||
| results.push((function() { | ||
| var k, len2, results1; | ||
| results1 = []; | ||
| for (k = 0, len2 = addedNodes.length; k < len2; k++) { | ||
| target = addedNodes[k]; | ||
| results1.push((function() { | ||
| var l, len3, ref1, results2; | ||
| ref1 = findElementsWithTagName(target, "SUMMARY"); | ||
| results2 = []; | ||
| for (l = 0, len3 = ref1.length; l < len3; l++) { | ||
| summary = ref1[l]; | ||
| results2.push(addAttributesForSummary(summary)); | ||
| } | ||
| return results2; | ||
| })()); | ||
| } | ||
| return results1; | ||
| })()); | ||
| } | ||
| return results; | ||
| }); | ||
| return observer.observe(document.documentElement, { | ||
| subtree: true, | ||
| childList: true | ||
| }); | ||
| } else { | ||
| return document.addEventListener("DOMNodeInserted", function(event) { | ||
| var j, len1, ref1, results; | ||
| ref1 = findElementsWithTagName(event.target, "SUMMARY"); | ||
| results = []; | ||
| for (j = 0, len1 = ref1.length; j < len1; j++) { | ||
| summary = ref1[j]; | ||
| results.push(addAttributesForSummary(summary)); | ||
| } | ||
| return results; | ||
| }); | ||
| } | ||
| }; | ||
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| addAttributesForSummary = function(summary, details) { | ||
| if (details == null) { | ||
| details = findClosestElementWithTagName(summary, "DETAILS"); | ||
| } | ||
| summary.setAttribute("aria-expanded", details.hasAttribute("open")); | ||
| if (!summary.hasAttribute("tabindex")) { | ||
| summary.setAttribute("tabindex", "0"); | ||
| } | ||
| if (!summary.hasAttribute("role")) { | ||
| return summary.setAttribute("role", "button"); | ||
| } | ||
| }; | ||
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| polyfillToggleEvent = function() { | ||
| var observer; | ||
| if (typeof MutationObserver !== "undefined" && MutationObserver !== null) { | ||
| observer = new MutationObserver(function(mutations) { | ||
| var attributeName, i, len, ref, results, target; | ||
| results = []; | ||
| for (i = 0, len = mutations.length; i < len; i++) { | ||
| ref = mutations[i], target = ref.target, attributeName = ref.attributeName; | ||
| if (target.tagName === "DETAILS" && attributeName === "open") { | ||
| results.push(triggerToggle(target)); | ||
| } else { | ||
| results.push(void 0); | ||
| } | ||
| } | ||
| return results; | ||
| }); | ||
| return observer.observe(document.documentElement, { | ||
| attributes: true, | ||
| subtree: true | ||
| }); | ||
| } else { | ||
| return onTogglingTrigger(function(element) { | ||
| var open; | ||
| open = element.getAttribute("open"); | ||
| return setTimeout(function() { | ||
| if (element.getAttribute("open") !== open) { | ||
| return triggerToggle(element); | ||
| } | ||
| }, 1); | ||
| }); | ||
| } | ||
| }; | ||
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| eventIsSignificant = function(event) { | ||
| return !(event.defaultPrevented || event.ctrlKey || event.metaKey || event.shiftKey || event.target.isContentEditable); | ||
| }; | ||
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| onTogglingTrigger = function(callback) { | ||
| addEventListener("click", function(event) { | ||
| var element, ref; | ||
| if (eventIsSignificant(event) && event.which <= 1) { | ||
| if (element = findClosestElementWithTagName(event.target, "SUMMARY")) { | ||
| if (((ref = element.parentElement) != null ? ref.tagName : void 0) === "DETAILS") { | ||
| return callback(element.parentElement); | ||
| } | ||
| } | ||
| } | ||
| }, false); | ||
| return addEventListener("keydown", function(event) { | ||
| var element, ref, ref1; | ||
| if (eventIsSignificant(event) && ((ref = event.keyCode) === 13 || ref === 32)) { | ||
| if (element = findClosestElementWithTagName(event.target, "SUMMARY")) { | ||
| if (((ref1 = element.parentElement) != null ? ref1.tagName : void 0) === "DETAILS") { | ||
| callback(element.parentElement); | ||
| return event.preventDefault(); | ||
| } | ||
| } | ||
| } | ||
| }, false); | ||
| }; | ||
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| findElementsWithTagName = function(root, tagName) { | ||
| var elements; | ||
| elements = []; | ||
| if (root.nodeType === Node.ELEMENT_NODE) { | ||
| if (root.tagName === tagName) { | ||
| elements.push(root); | ||
| } | ||
| elements.push.apply(elements, root.getElementsByTagName(tagName)); | ||
| } | ||
| return elements; | ||
| }; | ||
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| findClosestElementWithTagName = (function() { | ||
| if (typeof Element.prototype.closest === "function") { | ||
| return function(element, tagName) { | ||
| return element.closest(tagName); | ||
| }; | ||
| } else { | ||
| return function(element, tagName) { | ||
| while (element) { | ||
| if (element.tagName === tagName) { | ||
| return element; | ||
| } else { | ||
| element = element.parentNode; | ||
| } | ||
| } | ||
| }; | ||
| } | ||
| })(); | ||
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| triggerToggle = function(element) { | ||
| var event; | ||
| event = document.createEvent("Events"); | ||
| event.initEvent("toggle", true, false); | ||
| return element.dispatchEvent(event); | ||
| }; | ||
|
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| triggerToggleIfToggled = function(element, fn) { | ||
| var open, result; | ||
| open = element.getAttribute("open"); | ||
| result = fn(); | ||
| if (element.getAttribute("open") !== open) { | ||
| triggerToggle(element); | ||
| } | ||
| return result; | ||
| }; | ||
|
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| if (!support.element) { | ||
| polyfillStyles(); | ||
| polyfillProperties(); | ||
| polyfillToggle(); | ||
| polyfillFocusAndARIA(); | ||
| } | ||
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| if (support.element && !support.toggleEvent) { | ||
| polyfillToggleEvent(); | ||
| } | ||
|
|
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| }).call(this); | ||
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can you link the edge bug?