640 lines
20 KiB
JavaScript
640 lines
20 KiB
JavaScript
/*! ie11CustomProperties.js v2.7.2 | MIT License | https://git.io/fjXMN */
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// c1.onElement helper
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!(function() {
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'use strict'
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if (!Element.prototype.matches)
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Element.prototype.matches = Element.prototype.msMatchesSelector
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var w = window
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if (!w.c1) w.c1 = {}
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var listeners = [],
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root = document,
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Observer
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c1.onElement = function(selector, options /*, disconnectedCallback*/) {
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if (typeof options === 'function') {
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options = { parsed: options }
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}
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var listener = {
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selector: selector,
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immediate: options.immediate,
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//disconnectedCallback: disconnectedCallback,
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elements: new WeakMap()
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}
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if (options.parsed) {
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listener.parsed = function(el) {
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requestAnimationFrame(function() {
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options.parsed(el)
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})
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}
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}
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var els = root.querySelectorAll(listener.selector),
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i = 0,
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el
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while ((el = els[i++])) {
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listener.elements.set(el, true)
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listener.parsed && listener.parsed.call(el, el)
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listener.immediate && listener.immediate.call(el, el)
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}
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listeners.push(listener)
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if (!Observer) {
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Observer = new MutationObserver(checkMutations)
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Observer.observe(root, {
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childList: true,
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subtree: true
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})
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}
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checkListener(listener)
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}
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function checkListener(listener, target) {
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var i = 0,
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el,
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els = []
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target && target.matches(listener.selector) && els.push(target)
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if (loaded) {
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// ok? check inside node on innerHTML - only when loaded
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Array.prototype.push.apply(
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els,
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(target || root).querySelectorAll(listener.selector)
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)
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}
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while ((el = els[i++])) {
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if (listener.elements.has(el)) continue
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listener.elements.set(el, true)
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//listener.connectedCallback.call(el, el);
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listener.parsed && listener.parsed.call(el, el)
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listener.immediate && listener.immediate.call(el, el)
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}
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}
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function checkListeners(inside) {
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var i = 0,
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listener
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while ((listener = listeners[i++])) checkListener(listener, inside)
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}
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function checkMutations(mutations) {
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var j = 0,
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i,
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mutation,
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nodes,
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target
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while ((mutation = mutations[j++])) {
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;(nodes = mutation.addedNodes), (i = 0)
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while ((target = nodes[i++]))
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target.nodeType === 1 && checkListeners(target)
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}
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}
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var loaded = false
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document.addEventListener('DOMContentLoaded', function() {
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loaded = true
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})
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// svg polyfills
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function copyProperty(prop, from, to) {
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var desc = Object.getOwnPropertyDescriptor(from, prop)
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Object.defineProperty(to, prop, desc)
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}
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if (!('classList' in Element.prototype)) {
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copyProperty('classList', HTMLElement.prototype, Element.prototype)
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}
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if (!('innerHTML' in Element.prototype)) {
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copyProperty('innerHTML', HTMLElement.prototype, Element.prototype)
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}
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if (!('sheet' in SVGStyleElement.prototype)) {
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Object.defineProperty(SVGStyleElement.prototype, 'sheet', {
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get: function() {
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var all = document.styleSheets
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for (var i = 0, sheet; (sheet = all[i++]); ) {
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if (sheet.ownerNode === this) return sheet
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}
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}
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})
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}
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// if ('children' in HTMLElement.prototype && !('children' in Element.prototype)) {
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// copyProperty('children', HTMLElement.prototype, Element.prototype);
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// }
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// if ('contains' in HTMLElement.prototype && !('contains' in Element.prototype)) {
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// copyProperty('contains', HTMLElement.prototype, Element.prototype);
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// }
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// if ('getElementsByClassName' in HTMLElement.prototype && !('getElementsByClassName' in Element.prototype)) {
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// copyProperty('getElementsByClassName', HTMLElement.prototype, Element.prototype);
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// }
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})()
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// main logic
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!(function() {
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'use strict'
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var testEl = document.createElement('i')
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testEl.style.setProperty('--x', 'y')
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if (testEl.style.getPropertyValue('--x') === 'y' || !testEl.msMatchesSelector)
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return
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// cached regexps, better performance
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const regFindSetters = /([\s{;])(--([A-Za-z0-9-_]+\s*:[^;!}{]+)(!important)?)(?=\s*([;}]|$))/g
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const regFindGetters = /([{;]\s*)([A-Za-z0-9-_]+\s*:[^;}{]*var\([^!;}{]+)(!important)?(?=\s*([;}$]|$))/g
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const regRuleIEGetters = /-ieVar-([^:]+):/g
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const regRuleIESetters = /-ie-([^};]+)/g
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const regHasVar = /var\(/
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const regPseudos = /:(hover|active|focus|target|:before|:after)/
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c1.onElement('link[rel="stylesheet"]', {
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immediate: function(el) {
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fetchCss(el.href, function(css) {
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var newCss = rewriteCss(css)
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if (css === newCss) return
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newCss = relToAbs(el.href, newCss)
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el.disabled = true
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var style = document.createElement('style')
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el.parentNode.insertBefore(style, el)
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activateStyleElement(style, newCss)
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})
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}
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})
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c1.onElement('style', {
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immediate: function(el) {
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if (el.hasAttribute('ie-polyfilled')) return
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if (el.ieCP_elementSheet) return
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var css = el.innerHTML
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var newCss = rewriteCss(css)
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if (css === newCss) return
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activateStyleElement(el, newCss)
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}
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})
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c1.onElement('[ie-style]', {
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immediate: function(el) {
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var newCss = rewriteCss('{' + el.getAttribute('ie-style')).substr(1)
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el.style.cssText += ';' + newCss
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var found = parseRewrittenStyle(el.style)
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if (found.getters) addGetterElement(el, found.getters, '%styleAttr')
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if (found.setters) addSetterElement(el, found.setters)
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}
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})
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function relToAbs(base, css) {
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return css.replace(/url\(([^)]+)\)/g, function($0, $1) {
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$1 = $1.trim().replace(/(^['"]|['"]$)/g, '')
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if ($1.match(/^([a-z]+:|\/)/)) return $0
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base = base.replace(/\?.*/, '')
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return 'url(' + base + './../' + $1 + ')'
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})
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}
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// ie has a bug, where unknown properties at pseudo-selectors are computed at the element
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// #el::after { -content:'x'; } => getComputedStyle(el)['-content'] == 'x'
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// should we add something like -ieVar-pseudo_after-content:'x'?
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function rewriteCss(css) {
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/* uncomment if spec finished and needed by someone
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css = css.replace(/@property ([^{]+){([^}]+)}/, function($0, prop, body){
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prop = prop.trim();
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const declaration = {name:prop};
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body.split(';').forEach(function(pair){
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const x = pair.split(':');
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if (x[1]) declaration[ x[0].trim() ] = x[1];
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});
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declaration['inherits'] = declaration['inherits'].trim()==='true' ? true : false;
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declaration['initialValue'] = declaration['initial-value'];
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CSS.registerProperty(declaration)
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return '/*\n @property ... removed \n*'+'/';
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});
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*/
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return css
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.replace(regFindSetters, function($0, $1, $2, $3, important) {
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return $1 + '-ie-' + (important ? '❗' : '') + $3
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})
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.replace(regFindGetters, function($0, $1, $2, important) {
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return $1 + '-ieVar-' + (important ? '❗' : '') + $2 + '; ' + $2 // keep the original, so chaining works "--x:var(--y)"
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})
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}
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// beta
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const styles_of_getter_properties = {}
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function parseRewrittenStyle(style) {
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// less memory then parameter cssText?
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// beta
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style['z-index'] // ie11 can access unknown properties in stylesheets only if accessed a dashed known property
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const cssText = style.cssText
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var matchesGetters = cssText.match(regRuleIEGetters),
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j,
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match
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if (matchesGetters) {
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var getters = [] // eg. [border,color]
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for (j = 0; (match = matchesGetters[j++]); ) {
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let propName = match.slice(7, -1)
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if (propName[0] === '❗') propName = propName.substr(1)
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getters.push(propName)
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// beta
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if (!styles_of_getter_properties[propName])
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styles_of_getter_properties[propName] = []
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styles_of_getter_properties[propName].push(style)
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}
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}
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var matchesSetters = cssText.match(regRuleIESetters)
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if (matchesSetters) {
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var setters = {} // eg. [--color:#fff, --padding:10px];
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for (j = 0; (match = matchesSetters[j++]); ) {
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let x = match.substr(4).split(':')
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let propName = x[0]
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let propValue = x[1]
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if (propName[0] === '❗') propName = propName.substr(1)
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setters[propName] = propValue
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}
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}
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return { getters: getters, setters: setters }
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}
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function activateStyleElement(style, css) {
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style.innerHTML = css
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style.setAttribute('ie-polyfilled', true)
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var rules = style.sheet.rules,
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i = 0,
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rule // cssRules = CSSRuleList, rules = MSCSSRuleList
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while ((rule = rules[i++])) {
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const found = parseRewrittenStyle(rule.style)
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if (found.getters) addGettersSelector(rule.selectorText, found.getters)
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if (found.setters) addSettersSelector(rule.selectorText, found.setters)
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// mediaQueries: redraw the hole document
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// better add events for each element?
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const media =
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rule.parentRule &&
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rule.parentRule.media &&
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rule.parentRule.media.mediaText
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if (media && (found.getters || found.setters)) {
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matchMedia(media).addListener(function() {
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drawTree(document.documentElement)
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})
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}
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}
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// beta
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redrawStyleSheets()
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}
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function addGettersSelector(selector, properties) {
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selectorAddPseudoListeners(selector)
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c1.onElement(unPseudo(selector), {
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immediate: function(el) {
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addGetterElement(el, properties, selector)
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drawElement(el)
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}
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})
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}
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function addGetterElement(el, properties, selector) {
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var i = 0,
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prop,
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j
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const selectors = selector.split(',') // split grouped selectors
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el.setAttribute('iecp-needed', true)
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if (!el.ieCPSelectors) el.ieCPSelectors = {}
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while ((prop = properties[i++])) {
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for (j = 0; (selector = selectors[j++]); ) {
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const parts = selector.trim().split('::')
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if (!el.ieCPSelectors[prop]) el.ieCPSelectors[prop] = []
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el.ieCPSelectors[prop].push({
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selector: parts[0],
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pseudo: parts[1] ? '::' + parts[1] : ''
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})
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}
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}
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}
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function addSettersSelector(selector, propVals) {
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selectorAddPseudoListeners(selector)
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c1.onElement(unPseudo(selector), {
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immediate: function(el) {
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addSetterElement(el, propVals)
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}
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})
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}
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function addSetterElement(el, propVals) {
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if (!el.ieCP_setters) el.ieCP_setters = {}
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for (var prop in propVals) {
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// eg. {foo:#fff, bar:baz}
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el.ieCP_setters['--' + prop] = 1
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}
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drawTree(el)
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}
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//beta
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function redrawStyleSheets() {
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for (var prop in styles_of_getter_properties) {
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let styles = styles_of_getter_properties[prop]
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for (var i = 0, style; (style = styles[i++]); ) {
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if (style.owningElement) continue
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var value = style['-ieVar-' + prop]
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if (!value) continue
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var value = styleComputeValueWidthVars(
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getComputedStyle(document.documentElement),
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value
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)
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if (value === '') continue
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style[prop] = value
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}
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}
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}
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const pseudos = {
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hover: {
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on: 'mouseenter',
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off: 'mouseleave'
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},
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focus: {
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on: 'focusin',
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off: 'focusout'
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},
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active: {
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on: 'CSSActivate',
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off: 'CSSDeactivate'
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}
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}
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function selectorAddPseudoListeners(selector) {
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// ie11 has the strange behavoir, that groups of selectors are individual rules, but starting with the full selector:
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// td, th, button { color:red } results in this rules:
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// "td, th, button" | "th, th" | "th"
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selector = selector.split(',')[0]
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for (var pseudo in pseudos) {
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var parts = selector.split(':' + pseudo)
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if (parts.length > 1) {
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var ending = parts[1].match(/^[^\s]*/) // ending elementpart of selector (used for not(:active))
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let sel = unPseudo(parts[0] + ending)
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const listeners = pseudos[pseudo]
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c1.onElement(sel, function(el) {
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el.addEventListener(listeners.on, drawTreeEvent)
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el.addEventListener(listeners.off, drawTreeEvent)
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})
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}
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}
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}
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let CSSActive = null
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document.addEventListener('mousedown', function(e) {
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setTimeout(function() {
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if (e.target === document.activeElement) {
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var evt = document.createEvent('Event')
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evt.initEvent('CSSActivate', true, true)
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CSSActive = e.target
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CSSActive.dispatchEvent(evt)
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}
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})
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})
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document.addEventListener('mouseup', function() {
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if (CSSActive) {
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var evt = document.createEvent('Event')
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evt.initEvent('CSSDeactivate', true, true)
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CSSActive.dispatchEvent(evt)
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CSSActive = null
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}
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})
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function unPseudo(selector) {
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return selector.replace(regPseudos, '').replace(':not()', '')
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}
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var uniqueCounter = 0
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function _drawElement(el) {
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if (!el.ieCP_unique) {
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// use el.uniqueNumber? but needs class for the css-selector => test performance
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el.ieCP_unique = ++uniqueCounter
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el.classList.add('iecp-u' + el.ieCP_unique)
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}
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var style = getComputedStyle(el)
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if (el.ieCP_sheet)
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while (el.ieCP_sheet.rules[0]) el.ieCP_sheet.deleteRule(0)
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for (var prop in el.ieCPSelectors) {
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var important = style['-ieVar-❗' + prop]
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let valueWithVar = important || style['-ieVar-' + prop]
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if (!valueWithVar) continue // todo, what if '0'
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var details = {}
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var value = styleComputeValueWidthVars(style, valueWithVar, details)
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if (important) value += ' !important'
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for (var i = 0, item; (item = el.ieCPSelectors[prop][i++]); ) {
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// todo: split and use requestAnimationFrame?
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if (item.selector === '%styleAttr') {
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el.style[prop] = value
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} else {
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// beta
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if (!important && details.allByRoot !== false) continue // dont have to draw root-properties
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//let selector = item.selector.replace(/>? \.[^ ]+/, ' ', item.selector); // todo: try to equalize specificity
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let selector = item.selector
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elementStyleSheet(el).insertRule(
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selector +
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'.iecp-u' +
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el.ieCP_unique +
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item.pseudo +
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' {' +
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prop +
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':' +
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value +
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'}',
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0
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) // faster then innerHTML
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}
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}
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}
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}
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function elementStyleSheet(el) {
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if (!el.ieCP_sheet) {
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var tag = document.createElement('style')
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tag.ieCP_elementSheet = 1
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//el.appendChild(tag); // yes! self-closing tags can have style as children, but - if i set innerHTML, the stylesheet is lost
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document.head.appendChild(tag)
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el.ieCP_sheet = tag.sheet
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}
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return el.ieCP_sheet
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}
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function drawTree(target) {
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if (!target) return
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var els = target.querySelectorAll('[iecp-needed]')
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if (target.hasAttribute && target.hasAttribute('iecp-needed'))
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drawElement(target) // self
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for (var i = 0, el; (el = els[i++]); ) drawElement(el) // tree
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}
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// draw queue
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let drawQueue = new Set()
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let collecting = false
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let drawing = false
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function drawElement(el) {
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drawQueue.add(el)
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if (collecting) return
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collecting = true
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requestAnimationFrame(function() {
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collecting = false
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drawing = true
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drawQueue.forEach(_drawElement)
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requestAnimationFrame(function() {
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// mutationObserver will trigger delayed
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drawing = false
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})
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drawQueue.clear()
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})
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}
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function drawTreeEvent(e) {
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drawTree(e.target)
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}
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const regValueGetters = /var\(([^),]+)(\,(.+))?\)/g
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function styleComputeValueWidthVars(style, valueWithVar, details) {
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return valueWithVar.replace(regValueGetters, function(
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full,
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variable,
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x,
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fallback
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) {
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variable = variable.trim()
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var pValue = style.getPropertyValue(variable)
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if (details && style.lastPropertyServedBy !== document.documentElement)
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details.allByRoot = false
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if (pValue === '' && fallback !== undefined) pValue = fallback.trim() // fallback
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return pValue
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})
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}
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// mutation listener
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var observer = new MutationObserver(function(mutations) {
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if (drawing) return
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|
for (var i = 0, mutation; (mutation = mutations[i++]); ) {
|
|
if (mutation.attributeName === 'ie-polyfilled') continue
|
|
if (mutation.attributeName === 'iecp-needed') continue
|
|
// recheck all selectors if it targets new elements?
|
|
drawTree(mutation.target)
|
|
}
|
|
})
|
|
setTimeout(function() {
|
|
observer.observe(document, { attributes: true, subtree: true })
|
|
})
|
|
|
|
// :target listener
|
|
var oldHash = location.hash
|
|
addEventListener('hashchange', function(e) {
|
|
var newEl = document.getElementById(location.hash.substr(1))
|
|
if (newEl) {
|
|
var oldEl = document.getElementById(oldHash.substr(1))
|
|
drawTree(newEl)
|
|
drawTree(oldEl)
|
|
} else {
|
|
drawTree(document)
|
|
}
|
|
oldHash = location.hash
|
|
})
|
|
|
|
// add owningElement to Element.style
|
|
var descriptor = Object.getOwnPropertyDescriptor(
|
|
HTMLElement.prototype,
|
|
'style'
|
|
)
|
|
var styleGetter = descriptor.get
|
|
descriptor.get = function() {
|
|
const style = styleGetter.call(this)
|
|
style.owningElement = this
|
|
return style
|
|
}
|
|
Object.defineProperty(HTMLElement.prototype, 'style', descriptor)
|
|
|
|
// add computedFor to computed style-objects
|
|
var originalGetComputed = getComputedStyle
|
|
window.getComputedStyle = function(el) {
|
|
var style = originalGetComputed.apply(this, arguments)
|
|
style.computedFor = el
|
|
//style.pseudoElt = pseudoElt; //not needed at the moment
|
|
return style
|
|
}
|
|
|
|
// getPropertyValue / setProperty hooks
|
|
const StyleProto = CSSStyleDeclaration.prototype
|
|
|
|
const oldGetP = StyleProto.getPropertyValue
|
|
StyleProto.getPropertyValue = function(property) {
|
|
this.lastPropertyServedBy = false
|
|
if (property[0] !== '-' || property[1] !== '-')
|
|
return oldGetP.apply(this, arguments)
|
|
const undashed = property.substr(2)
|
|
const ieProperty = '-ie-' + undashed
|
|
const iePropertyImportant = '-ie-❗' + undashed
|
|
let value = this[iePropertyImportant] || this[ieProperty]
|
|
if (this.computedFor) {
|
|
// computedStyle
|
|
if (value !== undefined) {
|
|
if (regHasVar.test(value)) {
|
|
value = styleComputeValueWidthVars(this, value)
|
|
}
|
|
this.lastPropertyServedBy = this.computedFor
|
|
} else {
|
|
if (!register[property] || register[property].inherits) {
|
|
// inherited
|
|
//let el = this.pseudoElt ? this.computedFor : this.computedFor.parentNode;
|
|
let el = this.computedFor.parentNode
|
|
while (el.nodeType === 1) {
|
|
// how slower would it be to getComputedStyle for every element, not just with defined ieCP_setters
|
|
if (el.ieCP_setters && el.ieCP_setters[property]) {
|
|
// i could make
|
|
// value = el.nodeType ? getComputedStyle(this.computedFor.parentNode).getPropertyValue(property)
|
|
// but i fear performance, stupid?
|
|
var style = getComputedStyle(el)
|
|
var tmpVal = style[iePropertyImportant] || style[ieProperty]
|
|
if (tmpVal !== undefined) {
|
|
value = tmpVal
|
|
if (regHasVar.test(value)) {
|
|
// calculated style from current element not from the element the value was inherited from! (style, value)
|
|
value = styleComputeValueWidthVars(this, value)
|
|
}
|
|
this.lastPropertyServedBy = el
|
|
break
|
|
}
|
|
}
|
|
el = el.parentNode
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (value === undefined && register[property])
|
|
value = register[property].initialValue
|
|
if (value === undefined) value = ''
|
|
return value
|
|
}
|
|
|
|
const oldSetP = StyleProto.setProperty
|
|
StyleProto.setProperty = function(property, value, prio) {
|
|
if (property[0] !== '-' || property[1] !== '-')
|
|
return oldSetP.apply(this, arguments)
|
|
if (this.owningElement) {
|
|
const el = this.owningElement
|
|
if (!el.ieCP_setters) el.ieCP_setters = {}
|
|
el.ieCP_setters[property] = 1
|
|
drawTree(el)
|
|
}
|
|
property = '-ie-' + (prio === 'important' ? '❗' : '') + property.substr(2)
|
|
this.cssText += '; ' + property + ':' + value + ';'
|
|
//this[property] = value;
|
|
}
|
|
|
|
if (!window.CSS) window.CSS = {}
|
|
const register = {}
|
|
CSS.registerProperty = function(options) {
|
|
register[options.name] = options
|
|
}
|
|
|
|
// utils
|
|
function fetchCss(url, callback) {
|
|
var request = new XMLHttpRequest()
|
|
request.open('GET', url)
|
|
request.overrideMimeType('text/css')
|
|
request.onload = function() {
|
|
if (request.status >= 200 && request.status < 400) {
|
|
callback(request.responseText)
|
|
}
|
|
}
|
|
request.send()
|
|
}
|
|
})()
|