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All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\n/** @type {Promise<void>} */\nlet readyPromise = null;\n\n/** @type {?function(?function())} */\nlet whenReady = window['HTMLImports'] && window['HTMLImports']['whenReady'] || null;\n\n/** @type {function()} */\nlet resolveFn;\n\n/**\n * @param {?function()} callback\n */\nexport default function documentWait(callback) {\n requestAnimationFrame(function() {\n if (whenReady) {\n whenReady(callback)\n } else {\n if (!readyPromise) {\n readyPromise = new Promise((resolve) => {resolveFn = resolve});\n if (document.readyState === 'complete') {\n resolveFn();\n } else {\n document.addEventListener('readystatechange', () => {\n if (document.readyState === 'complete') {\n resolveFn();\n }\n });\n }\n }\n readyPromise.then(function(){ callback && callback(); });\n }\n });\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nimport documentWait from './document-wait.js';\n\n/**\n * @typedef {HTMLStyleElement | {getStyle: function():HTMLStyleElement}}\n */\nexport let CustomStyleProvider;\n\nconst SEEN_MARKER = '__seenByShadyCSS';\nconst CACHED_STYLE = '__shadyCSSCachedStyle';\n\n/** @type {?function(!HTMLStyleElement)} */\nlet transformFn = null;\n\n/** @type {?function()} */\nlet validateFn = null;\n\n/**\nThis interface is provided to add document-level <style> elements to ShadyCSS for processing.\nThese styles must be processed by ShadyCSS to simulate ShadowRoot upper-bound encapsulation from outside styles\nIn addition, these styles may also need to be processed for @apply rules and CSS Custom Properties\n\nTo add document-level styles to ShadyCSS, one can call `ShadyCSS.addDocumentStyle(styleElement)` or `ShadyCSS.addDocumentStyle({getStyle: () => styleElement})`\n\nIn addition, if the process used to discover document-level styles can be synchronously flushed, one should set `ShadyCSS.documentStyleFlush`.\nThis function will be called when calculating styles.\n\nAn example usage of the document-level styling api can be found in `examples/document-style-lib.js`\n\n@unrestricted\n*/\nexport default class CustomStyleInterface {\n constructor() {\n /** @type {!Array<!CustomStyleProvider>} */\n this['customStyles'] = [];\n this['enqueued'] = false;\n // NOTE(dfreedm): use quotes here to prevent closure inlining to `function(){}`;\n documentWait(() => {\n if (window['ShadyCSS']['flushCustomStyles']) {\n window['ShadyCSS']['flushCustomStyles']();\n }\n })\n }\n /**\n * Queue a validation for new custom styles to batch style recalculations\n */\n enqueueDocumentValidation() {\n if (this['enqueued'] || !validateFn) {\n return;\n }\n this['enqueued'] = true;\n documentWait(validateFn);\n }\n /**\n * @param {!HTMLStyleElement} style\n */\n addCustomStyle(style) {\n if (!style[SEEN_MARKER]) {\n style[SEEN_MARKER] = true;\n this['customStyles'].push(style);\n this.enqueueDocumentValidation();\n }\n }\n /**\n * @param {!CustomStyleProvider} customStyle\n * @return {HTMLStyleElement}\n */\n getStyleForCustomStyle(customStyle) {\n if (customStyle[CACHED_STYLE]) {\n return customStyle[CACHED_STYLE];\n }\n let style;\n if (customStyle['getStyle']) {\n style = customStyle['getStyle']();\n } else {\n style = customStyle;\n }\n return style;\n }\n /**\n * @return {!Array<!CustomStyleProvider>}\n */\n processStyles() {\n const cs = this['customStyles'];\n for (let i = 0; i < cs.length; i++) {\n const customStyle = cs[i];\n if (customStyle[CACHED_STYLE]) {\n continue;\n }\n const style = this.getStyleForCustomStyle(customStyle);\n if (style) {\n // HTMLImports polyfill may have cloned the style into the main document,\n // which is referenced with __appliedElement.\n const styleToTransform = /** @type {!HTMLStyleElement} */(style['__appliedElement'] || style);\n if (transformFn) {\n transformFn(styleToTransform);\n }\n customStyle[CACHED_STYLE] = styleToTransform;\n }\n }\n return cs;\n }\n}\n\n/* eslint-disable no-self-assign */\nCustomStyleInterface.prototype['addCustomStyle'] = CustomStyleInterface.prototype.addCustomStyle;\nCustomStyleInterface.prototype['getStyleForCustomStyle'] = CustomStyleInterface.prototype.getStyleForCustomStyle;\nCustomStyleInterface.prototype['processStyles'] = CustomStyleInterface.prototype.processStyles;\n/* eslint-enable no-self-assign */\n\nObject.defineProperties(CustomStyleInterface.prototype, {\n 'transformCallback': {\n /** @return {?function(!HTMLStyleElement)} */\n get() {\n return transformFn;\n },\n /** @param {?function(!HTMLStyleElement)} fn */\n set(fn) {\n transformFn = fn;\n }\n },\n 'validateCallback': {\n /** @return {?function()} */\n get() {\n return validateFn;\n },\n /**\n * @param {?function()} fn\n * @this {CustomStyleInterface}\n */\n set(fn) {\n let needsEnqueue = false;\n if (!validateFn) {\n needsEnqueue = true;\n }\n validateFn = fn;\n if (needsEnqueue) {\n this.enqueueDocumentValidation();\n }\n },\n }\n})\n\n/** @typedef {{\n * customStyles: !Array<!CustomStyleProvider>,\n * addCustomStyle: function(!CustomStyleProvider),\n * getStyleForCustomStyle: function(!CustomStyleProvider): HTMLStyleElement,\n * findStyles: function(),\n * transformCallback: ?function(!HTMLStyleElement),\n * validateCallback: ?function()\n * }}\n */\nexport const CustomStyleInterfaceInterface = {};\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nimport { MIXIN_MATCH, VAR_ASSIGN } from './common-regex.js';\n\n/**\n * @param {Element} element\n * @param {Object=} properties\n */\nexport function updateNativeProperties(element, properties) {\n // remove previous properties\n for (let p in properties) {\n // NOTE: for bc with shim, don't apply null values.\n if (p === null) {\n element.style.removeProperty(p);\n } else {\n element.style.setProperty(p, properties[p]);\n }\n }\n}\n\n/**\n * @param {Element} element\n * @param {string} property\n * @return {string}\n */\nexport function getComputedStyleValue(element, property) {\n /**\n * @const {string}\n */\n const value = window.getComputedStyle(element).getPropertyValue(property);\n if (!value) {\n return '';\n } else {\n return value.trim();\n }\n}\n\n/**\n * return true if `cssText` contains a mixin definition or consumption\n * @param {string} cssText\n * @return {boolean}\n */\nexport function detectMixin(cssText) {\n const has = MIXIN_MATCH.test(cssText) || VAR_ASSIGN.test(cssText);\n // reset state of the regexes\n MIXIN_MATCH.lastIndex = 0;\n VAR_ASSIGN.lastIndex = 0;\n return has;\n}\n","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nexport const nativeShadow = !(window['ShadyDOM'] && window['ShadyDOM']['inUse']);\nlet nativeCssVariables_;\n\n/**\n * @param {(ShadyCSSOptions | ShadyCSSInterface)=} settings\n */\nfunction calcCssVariables(settings) {\n if (settings && settings['shimcssproperties']) {\n nativeCssVariables_ = false;\n } else {\n // chrome 49 has semi-working css vars, check if box-shadow works\n // safari 9.1 has a recalc bug: https://bugs.webkit.org/show_bug.cgi?id=155782\n // However, shim css custom properties are only supported with ShadyDOM enabled,\n // so fall back on native if we do not detect ShadyDOM\n // Edge 15: custom properties used in ::before and ::after will also be used in the parent element\n // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12414257/\n nativeCssVariables_ = nativeShadow || Boolean(!navigator.userAgent.match(/AppleWebKit\\/601|Edge\\/15/) &&\n window.CSS && CSS.supports && CSS.supports('box-shadow', '0 0 0 var(--foo)'));\n }\n}\n\n/** @type {string | undefined} */\nexport let cssBuild;\nif (window.ShadyCSS && window.ShadyCSS.cssBuild !== undefined) {\n cssBuild = window.ShadyCSS.cssBuild;\n}\n\nif (window.ShadyCSS && window.ShadyCSS.nativeCss !== undefined) {\n nativeCssVariables_ = window.ShadyCSS.nativeCss;\n} else if (window.ShadyCSS) {\n calcCssVariables(window.ShadyCSS);\n // reset window variable to let ShadyCSS API take its place\n window.ShadyCSS = undefined;\n} else {\n calcCssVariables(window['WebComponents'] && window['WebComponents']['flags']);\n}\n\n// Hack for type error under new type inference which doesn't like that\n// nativeCssVariables is updated in a function and assigns the type\n// `function(): ?` instead of `boolean`.\nexport const nativeCssVariables = /** @type {boolean} */(nativeCssVariables_);","/**\n@license\nCopyright (c) 2017 The Polymer Project Authors. All rights reserved.\nThis code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\nThe complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\nThe complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\nCode distributed by Google as part of the polymer project is also\nsubject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n*/\n\n'use strict';\n\nimport CustomStyleInterface from '../src/custom-style-interface.js';\nimport {getComputedStyleValue, updateNativeProperties} from '../src/common-utils.js';\nimport {nativeCssVariables, nativeShadow, cssBuild} from '../src/style-settings.js';\n\nconst customStyleInterface = new CustomStyleInterface();\n\nif (!window.ShadyCSS) {\n window.ShadyCSS = {\n /**\n * @param {!HTMLTemplateElement} template\n * @param {string} elementName\n * @param {string=} elementExtends\n */\n prepareTemplate(template, elementName, elementExtends) {}, // eslint-disable-line no-unused-vars\n\n /**\n * @param {!HTMLTemplateElement} template\n * @param {string} elementName\n */\n prepareTemplateDom(template, elementName) {}, // eslint-disable-line no-unused-vars\n\n /**\n * @param {!HTMLTemplateElement} template\n * @param {string} elementName\n * @param {string=} elementExtends\n */\n prepareTemplateStyles(template, elementName, elementExtends) {}, // eslint-disable-line no-unused-vars\n\n /**\n * @param {Element} element\n * @param {Object=} properties\n */\n styleSubtree(element, properties) {\n customStyleInterface.processStyles();\n updateNativeProperties(element, properties);\n },\n\n /**\n * @param {Element} element\n */\n styleElement(element) { // eslint-disable-line no-unused-vars\n customStyleInterface.processStyles();\n },\n\n /**\n * @param {Object=} properties\n */\n styleDocument(properties) {\n customStyleInterface.processStyles();\n updateNativeProperties(document.body, properties);\n },\n\n /**\n * @param {Element} element\n * @param {string} property\n * @return {string}\n */\n getComputedStyleValue(element, property) {\n return getComputedStyleValue(element, property);\n },\n\n flushCustomStyles() {},\n nativeCss: nativeCssVariables,\n nativeShadow: nativeShadow,\n cssBuild: cssBuild\n }\n}\n\nwindow.ShadyCSS.CustomStyleInterface = customStyleInterface;"]}
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