VLEX/BPM-UI/node_modules/@angular/cdk/esm2015/platform.js

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { Inject, Injectable, Optional, PLATFORM_ID, NgModule, ɵɵdefineInjectable, ɵɵinject } from '@angular/core';
import { isPlatformBrowser } from '@angular/common';

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
// Whether the current platform supports the V8 Break Iterator. The V8 check
// is necessary to detect all Blink based browsers.
/** @type {?} */
let hasV8BreakIterator;
// We need a try/catch around the reference to `Intl`, because accessing it in some cases can
// cause IE to throw. These cases are tied to particular versions of Windows and can happen if
// the consumer is providing a polyfilled `Map`. See:
// https://github.com/Microsoft/ChakraCore/issues/3189
// https://github.com/angular/components/issues/15687
try {
    hasV8BreakIterator = (typeof Intl !== 'undefined' && ((/** @type {?} */ (Intl))).v8BreakIterator);
}
catch (_a) {
    hasV8BreakIterator = false;
}
/**
 * Service to detect the current platform by comparing the userAgent strings and
 * checking browser-specific global properties.
 */
class Platform {
    /**
     * \@breaking-change 8.0.0 remove optional decorator
     * @param {?=} _platformId
     */
    constructor(_platformId) {
        this._platformId = _platformId;
        /**
         * Whether the Angular application is being rendered in the browser.
         * We want to use the Angular platform check because if the Document is shimmed
         * without the navigator, the following checks will fail. This is preferred because
         * sometimes the Document may be shimmed without the user's knowledge or intention
         */
        this.isBrowser = this._platformId ?
            isPlatformBrowser(this._platformId) : typeof document === 'object' && !!document;
        /**
         * Whether the current browser is Microsoft Edge.
         */
        this.EDGE = this.isBrowser && /(edge)/i.test(navigator.userAgent);
        /**
         * Whether the current rendering engine is Microsoft Trident.
         */
        this.TRIDENT = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);
        /**
         * Whether the current rendering engine is Blink.
         */
        // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.
        this.BLINK = this.isBrowser && (!!(((/** @type {?} */ (window))).chrome || hasV8BreakIterator) &&
            typeof CSS !== 'undefined' && !this.EDGE && !this.TRIDENT);
        /**
         * Whether the current rendering engine is WebKit.
         */
        // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to
        // ensure that Webkit runs standalone and is not used as another engine's base.
        this.WEBKIT = this.isBrowser &&
            /AppleWebKit/i.test(navigator.userAgent) && !this.BLINK && !this.EDGE && !this.TRIDENT;
        /**
         * Whether the current platform is Apple iOS.
         */
        this.IOS = this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) &&
            !('MSStream' in window);
        /**
         * Whether the current browser is Firefox.
         */
        // It's difficult to detect the plain Gecko engine, because most of the browsers identify
        // them self as Gecko-like browsers and modify the userAgent's according to that.
        // Since we only cover one explicit Firefox case, we can simply check for Firefox
        // instead of having an unstable check for Gecko.
        this.FIREFOX = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);
        /**
         * Whether the current platform is Android.
         */
        // Trident on mobile adds the android platform to the userAgent to trick detections.
        this.ANDROID = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;
        /**
         * Whether the current browser is Safari.
         */
        // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake
        // this and just place the Safari keyword in the userAgent. To be more safe about Safari every
        // Safari browser should also use Webkit as its layout engine.
        this.SAFARI = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;
    }
}
Platform.decorators = [
    { type: Injectable, args: [{ providedIn: 'root' },] },
];
/** @nocollapse */
Platform.ctorParameters = () => [
    { type: Object, decorators: [{ type: Optional }, { type: Inject, args: [PLATFORM_ID,] }] }
];
/** @nocollapse */ Platform.ngInjectableDef = ɵɵdefineInjectable({ factory: function Platform_Factory() { return new Platform(ɵɵinject(PLATFORM_ID, 8)); }, token: Platform, providedIn: "root" });

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
class PlatformModule {
}
PlatformModule.decorators = [
    { type: NgModule, args: [{},] },
];

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Cached result Set of input types support by the current browser.
 * @type {?}
 */
let supportedInputTypes;
/**
 * Types of `<input>` that *might* be supported.
 * @type {?}
 */
const candidateInputTypes = [
    // `color` must come first. Chrome 56 shows a warning if we change the type to `color` after
    // first changing it to something else:
    // The specified value "" does not conform to the required format.
    // The format is "#rrggbb" where rr, gg, bb are two-digit hexadecimal numbers.
    'color',
    'button',
    'checkbox',
    'date',
    'datetime-local',
    'email',
    'file',
    'hidden',
    'image',
    'month',
    'number',
    'password',
    'radio',
    'range',
    'reset',
    'search',
    'submit',
    'tel',
    'text',
    'time',
    'url',
    'week',
];
/**
 * @return {?} The input types supported by this browser.
 */
function getSupportedInputTypes() {
    // Result is cached.
    if (supportedInputTypes) {
        return supportedInputTypes;
    }
    // We can't check if an input type is not supported until we're on the browser, so say that
    // everything is supported when not on the browser. We don't use `Platform` here since it's
    // just a helper function and can't inject it.
    if (typeof document !== 'object' || !document) {
        supportedInputTypes = new Set(candidateInputTypes);
        return supportedInputTypes;
    }
    /** @type {?} */
    let featureTestInput = document.createElement('input');
    supportedInputTypes = new Set(candidateInputTypes.filter((/**
     * @param {?} value
     * @return {?}
     */
    value => {
        featureTestInput.setAttribute('type', value);
        return featureTestInput.type === value;
    })));
    return supportedInputTypes;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Cached result of whether the user's browser supports passive event listeners.
 * @type {?}
 */
let supportsPassiveEvents;
/**
 * Checks whether the user's browser supports passive event listeners.
 * See: https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
 * @return {?}
 */
function supportsPassiveEventListeners() {
    if (supportsPassiveEvents == null && typeof window !== 'undefined') {
        try {
            window.addEventListener('test', (/** @type {?} */ (null)), Object.defineProperty({}, 'passive', {
                get: (/**
                 * @return {?}
                 */
                () => supportsPassiveEvents = true)
            }));
        }
        finally {
            supportsPassiveEvents = supportsPassiveEvents || false;
        }
    }
    return supportsPassiveEvents;
}
/**
 * Normalizes an `AddEventListener` object to something that can be passed
 * to `addEventListener` on any browser, no matter whether it supports the
 * `options` parameter.
 * @param {?} options Object to be normalized.
 * @return {?}
 */
function normalizePassiveListenerOptions(options) {
    return supportsPassiveEventListeners() ? options : !!options.capture;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/** @enum {number} */
const RtlScrollAxisType = {
    /**
     * scrollLeft is 0 when scrolled all the way left and (scrollWidth - clientWidth) when scrolled
     * all the way right.
     */
    NORMAL: 0,
    /**
     * scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and 0 when scrolled
     * all the way right.
     */
    NEGATED: 1,
    /**
     * scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and 0 when scrolled
     * all the way right.
     */
    INVERTED: 2,
};
RtlScrollAxisType[RtlScrollAxisType.NORMAL] = 'NORMAL';
RtlScrollAxisType[RtlScrollAxisType.NEGATED] = 'NEGATED';
RtlScrollAxisType[RtlScrollAxisType.INVERTED] = 'INVERTED';
/**
 * Cached result of the way the browser handles the horizontal scroll axis in RTL mode.
 * @type {?}
 */
let rtlScrollAxisType;
/**
 * Check whether the browser supports scroll behaviors.
 * @return {?}
 */
function supportsScrollBehavior() {
    return !!(typeof document == 'object' && 'scrollBehavior' in (/** @type {?} */ (document.documentElement)).style);
}
/**
 * Checks the type of RTL scroll axis used by this browser. As of time of writing, Chrome is NORMAL,
 * Firefox & Safari are NEGATED, and IE & Edge are INVERTED.
 * @return {?}
 */
function getRtlScrollAxisType() {
    // We can't check unless we're on the browser. Just assume 'normal' if we're not.
    if (typeof document !== 'object' || !document) {
        return RtlScrollAxisType.NORMAL;
    }
    if (!rtlScrollAxisType) {
        // Create a 1px wide scrolling container and a 2px wide content element.
        /** @type {?} */
        const scrollContainer = document.createElement('div');
        /** @type {?} */
        const containerStyle = scrollContainer.style;
        scrollContainer.dir = 'rtl';
        containerStyle.height = '1px';
        containerStyle.width = '1px';
        containerStyle.overflow = 'auto';
        containerStyle.visibility = 'hidden';
        containerStyle.pointerEvents = 'none';
        containerStyle.position = 'absolute';
        /** @type {?} */
        const content = document.createElement('div');
        /** @type {?} */
        const contentStyle = content.style;
        contentStyle.width = '2px';
        contentStyle.height = '1px';
        scrollContainer.appendChild(content);
        document.body.appendChild(scrollContainer);
        rtlScrollAxisType = RtlScrollAxisType.NORMAL;
        // The viewport starts scrolled all the way to the right in RTL mode. If we are in a NORMAL
        // browser this would mean that the scrollLeft should be 1. If it's zero instead we know we're
        // dealing with one of the other two types of browsers.
        if (scrollContainer.scrollLeft === 0) {
            // In a NEGATED browser the scrollLeft is always somewhere in [-maxScrollAmount, 0]. For an
            // INVERTED browser it is always somewhere in [0, maxScrollAmount]. We can determine which by
            // setting to the scrollLeft to 1. This is past the max for a NEGATED browser, so it will
            // return 0 when we read it again.
            scrollContainer.scrollLeft = 1;
            rtlScrollAxisType =
                scrollContainer.scrollLeft === 0 ? RtlScrollAxisType.NEGATED : RtlScrollAxisType.INVERTED;
        }
        (/** @type {?} */ (scrollContainer.parentNode)).removeChild(scrollContainer);
    }
    return rtlScrollAxisType;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/** @type {?} */
let shadowDomIsSupported;
/**
 * Checks whether the user's browser support Shadow DOM.
 * @return {?}
 */
function _supportsShadowDom() {
    if (shadowDomIsSupported == null) {
        /** @type {?} */
        const head = typeof document !== 'undefined' ? document.head : null;
        shadowDomIsSupported = !!(head && (((/** @type {?} */ (head))).createShadowRoot || head.attachShadow));
    }
    return shadowDomIsSupported;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

export { Platform, PlatformModule, getSupportedInputTypes, supportsPassiveEventListeners, normalizePassiveListenerOptions, supportsScrollBehavior, getRtlScrollAxisType, RtlScrollAxisType, _supportsShadowDom };
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