| {"version":3,"file":"cdk-platform.umd.js","sources":["../../../../../src/cdk/platform/platform.ts","../../../../../src/cdk/platform/platform-module.ts","../../../../../src/cdk/platform/features/input-types.ts","../../../../../src/cdk/platform/features/passive-listeners.ts","../../../../../src/cdk/platform/features/scrolling.ts","../../../../../src/cdk/platform/features/shadow-dom.ts","../../../../../src/cdk/platform/public-api.ts","../../../../../src/cdk/platform/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Inject, Injectable, PLATFORM_ID} from '@angular/core';\nimport {isPlatformBrowser} from '@angular/common';\n\n// Whether the current platform supports the V8 Break Iterator. The V8 check\n// is necessary to detect all Blink based browsers.\nlet hasV8BreakIterator: boolean;\n\n// We need a try/catch around the reference to `Intl`, because accessing it in some cases can\n// cause IE to throw. These cases are tied to particular versions of Windows and can happen if\n// the consumer is providing a polyfilled `Map`. See:\n// https://github.com/Microsoft/ChakraCore/issues/3189\n// https://github.com/angular/components/issues/15687\ntry {\n hasV8BreakIterator = (typeof Intl !== 'undefined' && (Intl as any).v8BreakIterator);\n} catch {\n hasV8BreakIterator = false;\n}\n\n/**\n * Service to detect the current platform by comparing the userAgent strings and\n * checking browser-specific global properties.\n */\n@Injectable({providedIn: 'root'})\nexport class Platform {\n // We want to use the Angular platform check because if the Document is shimmed\n // without the navigator, the following checks will fail. This is preferred because\n // sometimes the Document may be shimmed without the user's knowledge or intention\n /** Whether the Angular application is being rendered in the browser. */\n isBrowser: boolean = this._platformId ?\n isPlatformBrowser(this._platformId) : typeof document === 'object' && !!document;\n\n /** Whether the current browser is Microsoft Edge. */\n EDGE: boolean = this.isBrowser && /(edge)/i.test(navigator.userAgent);\n\n /** Whether the current rendering engine is Microsoft Trident. */\n TRIDENT: boolean = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);\n\n // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.\n /** Whether the current rendering engine is Blink. */\n BLINK: boolean = this.isBrowser && (!!((window as any).chrome || hasV8BreakIterator) &&\n typeof CSS !== 'undefined' && !this.EDGE && !this.TRIDENT);\n\n // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to\n // ensure that Webkit runs standalone and is not used as another engine's base.\n /** Whether the current rendering engine is WebKit. */\n WEBKIT: boolean = this.isBrowser &&\n /AppleWebKit/i.test(navigator.userAgent) && !this.BLINK && !this.EDGE && !this.TRIDENT;\n\n /** Whether the current platform is Apple iOS. */\n IOS: boolean = this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) &&\n !('MSStream' in window);\n\n // It's difficult to detect the plain Gecko engine, because most of the browsers identify\n // them self as Gecko-like browsers and modify the userAgent's according to that.\n // Since we only cover one explicit Firefox case, we can simply check for Firefox\n // instead of having an unstable check for Gecko.\n /** Whether the current browser is Firefox. */\n FIREFOX: boolean = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);\n\n /** Whether the current platform is Android. */\n // Trident on mobile adds the android platform to the userAgent to trick detections.\n ANDROID: boolean = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;\n\n // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake\n // this and just place the Safari keyword in the userAgent. 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Chrome 56 shows a warning if we change the type to `color` after\n // first changing it to something else:\n // The specified value \"\" does not conform to the required format.\n // The format is \"#rrggbb\" where rr, gg, bb are two-digit hexadecimal numbers.\n 'color',\n 'button',\n 'checkbox',\n 'date',\n 'datetime-local',\n 'email',\n 'file',\n 'hidden',\n 'image',\n 'month',\n 'number',\n 'password',\n 'radio',\n 'range',\n 'reset',\n 'search',\n 'submit',\n 'tel',\n 'text',\n 'time',\n 'url',\n 'week',\n];\n\n/** @returns The input types supported by this browser. */\nexport function getSupportedInputTypes(): Set<string> {\n // Result is cached.\n if (supportedInputTypes) {\n return supportedInputTypes;\n }\n\n // We can't check if an input type is not supported until we're on the browser, so say that\n // everything is supported when not on the browser. We don't use `Platform` here since it's\n // just a helper function and can't inject it.\n if (typeof document !== 'object' || !document) {\n supportedInputTypes = new Set(candidateInputTypes);\n return supportedInputTypes;\n }\n\n let featureTestInput = document.createElement('input');\n supportedInputTypes = new Set(candidateInputTypes.filter(value => {\n featureTestInput.setAttribute('type', value);\n return featureTestInput.type === value;\n }));\n\n return supportedInputTypes;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/** Cached result of whether the user's browser supports passive event listeners. */\nlet supportsPassiveEvents: boolean;\n\n/**\n * Checks whether the user's browser supports passive event listeners.\n * See: https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md\n */\nexport function supportsPassiveEventListeners(): boolean {\n if (supportsPassiveEvents == null && typeof window !== 'undefined') {\n try {\n window.addEventListener('test', null!, Object.defineProperty({}, 'passive', {\n get: () => supportsPassiveEvents = true\n }));\n } finally {\n supportsPassiveEvents = supportsPassiveEvents || false;\n }\n }\n\n return supportsPassiveEvents;\n}\n\n/**\n * Normalizes an `AddEventListener` object to something that can be passed\n * to `addEventListener` on any browser, no matter whether it supports the\n * `options` parameter.\n * @param options Object to be normalized.\n */\nexport function normalizePassiveListenerOptions(options: AddEventListenerOptions):\n AddEventListenerOptions | boolean {\n return supportsPassiveEventListeners() ? options : !!options.capture;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/** The possible ways the browser may handle the horizontal scroll axis in RTL languages. */\nexport const enum RtlScrollAxisType {\n /**\n * scrollLeft is 0 when scrolled all the way left and (scrollWidth - clientWidth) when scrolled\n * all the way right.\n */\n NORMAL,\n /**\n * scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and 0 when scrolled\n * all the way right.\n */\n NEGATED,\n /**\n * scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and 0 when scrolled\n * all the way right.\n */\n INVERTED\n}\n\n/** Cached result of the way the browser handles the horizontal scroll axis in RTL mode. */\nlet rtlScrollAxisType: RtlScrollAxisType|undefined;\n\n/** Cached result of the check that indicates whether the browser supports scroll behaviors. */\nlet scrollBehaviorSupported: boolean|undefined;\n\n/** Check whether the browser supports scroll behaviors. */\nexport function supportsScrollBehavior(): boolean {\n if (scrollBehaviorSupported == null) {\n // If we're not in the browser, it can't be supported. Also check for `Element`, because\n // some projects stub out the global `document` during SSR which can throw us off.\n if (typeof document !== 'object' || !document || typeof Element !== 'function' || !Element) {\n scrollBehaviorSupported = false;\n return scrollBehaviorSupported;\n }\n\n // If the element can have a `scrollBehavior` style, we can be sure that it's supported.\n if ('scrollBehavior' in document.documentElement!.style) {\n scrollBehaviorSupported = true;\n } else {\n // At this point we have 3 possibilities: `scrollTo` isn't supported at all, it's\n // supported but it doesn't handle scroll behavior, or it has been polyfilled.\n const scrollToFunction: Function|undefined = Element.prototype.scrollTo;\n\n if (scrollToFunction) {\n // We can detect if the function has been polyfilled by calling `toString` on it. Native\n // functions are obfuscated using `[native code]`, whereas if it was overwritten we'd get\n // the actual function source. Via https://davidwalsh.name/detect-native-function. Consider\n // polyfilled functions as supporting scroll behavior.\n scrollBehaviorSupported = !/\\{\\s*\\[native code\\]\\s*\\}/.test(scrollToFunction.toString());\n } else {\n scrollBehaviorSupported = false;\n }\n }\n }\n\n return scrollBehaviorSupported;\n}\n\n/**\n * Checks the type of RTL scroll axis used by this browser. As of time of writing, Chrome is NORMAL,\n * Firefox & Safari are NEGATED, and IE & Edge are INVERTED.\n */\nexport function getRtlScrollAxisType(): RtlScrollAxisType {\n // We can't check unless we're on the browser. Just assume 'normal' if we're not.\n if (typeof document !== 'object' || !document) {\n return RtlScrollAxisType.NORMAL;\n }\n\n if (rtlScrollAxisType == null) {\n // Create a 1px wide scrolling container and a 2px wide content element.\n const scrollContainer = document.createElement('div');\n const containerStyle = scrollContainer.style;\n scrollContainer.dir = 'rtl';\n containerStyle.width = '1px';\n containerStyle.overflow = 'auto';\n containerStyle.visibility = 'hidden';\n containerStyle.pointerEvents = 'none';\n containerStyle.position = 'absolute';\n\n const content = document.createElement('div');\n const contentStyle = content.style;\n contentStyle.width = '2px';\n contentStyle.height = '1px';\n\n scrollContainer.appendChild(content);\n document.body.appendChild(scrollContainer);\n\n rtlScrollAxisType = RtlScrollAxisType.NORMAL;\n\n // The viewport starts scrolled all the way to the right in RTL mode. If we are in a NORMAL\n // browser this would mean that the scrollLeft should be 1. If it's zero instead we know we're\n // dealing with one of the other two types of browsers.\n if (scrollContainer.scrollLeft === 0) {\n // In a NEGATED browser the scrollLeft is always somewhere in [-maxScrollAmount, 0]. For an\n // INVERTED browser it is always somewhere in [0, maxScrollAmount]. We can determine which by\n // setting to the scrollLeft to 1. This is past the max for a NEGATED browser, so it will\n // return 0 when we read it again.\n scrollContainer.scrollLeft = 1;\n rtlScrollAxisType =\n scrollContainer.scrollLeft === 0 ? 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