/* esm-bundle - @angular/cdk/platform@15.1.1 - Ivy - es format - es2020 - 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 * as i0 from '@angular/core';
import { Injectable, Inject, PLATFORM_ID, NgModule } from '@angular/core';
import { isPlatformBrowser } from '@angular/common';

/**
 * @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
 */
// Whether the current platform supports the V8 Break Iterator. The V8 check
// is necessary to detect all Blink based browsers.
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' && Intl.v8BreakIterator;
} catch {
  hasV8BreakIterator = false;
}
/**
 * Service to detect the current platform by comparing the userAgent strings and
 * checking browser-specific global properties.
 */
class Platform {
  constructor(_platformId) {
    this._platformId = _platformId;
    // 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
    /** Whether the Angular application is being rendered in the browser. */
    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);
    // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.
    /** Whether the current rendering engine is Blink. */
    this.BLINK = this.isBrowser && !!(window.chrome || hasV8BreakIterator) && typeof CSS !== 'undefined' && !this.EDGE && !this.TRIDENT;
    // 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.
    /** Whether the current rendering engine is WebKit. */
    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);
    // 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.
    /** Whether the current browser is Firefox. */
    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;
    // 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.
    /** Whether the current browser is Safari. */
    this.SAFARI = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;
  }
}
Platform.ɵfac = function Platform_Factory(t) {
  return new (t || Platform)(i0.ɵɵinject(PLATFORM_ID));
};
Platform.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: Platform,
  factory: Platform.ɵfac,
  providedIn: 'root'
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(Platform, [{
    type: Injectable,
    args: [{
      providedIn: 'root'
    }]
  }], function () {
    return [{
      type: Object,
      decorators: [{
        type: Inject,
        args: [PLATFORM_ID]
      }]
    }];
  }, null);
})();

/**
 * @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
 */
class PlatformModule {}
PlatformModule.ɵfac = function PlatformModule_Factory(t) {
  return new (t || PlatformModule)();
};
PlatformModule.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({
  type: PlatformModule
});
PlatformModule.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(PlatformModule, [{
    type: NgModule,
    args: [{}]
  }], null, null);
})();

/**
 * @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
 */
/** Cached result Set of input types support by the current browser. */
let supportedInputTypes;
/** Types of `<input>` that *might* be supported. */
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'];
/** @returns 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;
  }
  let featureTestInput = document.createElement('input');
  supportedInputTypes = new Set(candidateInputTypes.filter(value => {
    featureTestInput.setAttribute('type', value);
    return featureTestInput.type === value;
  }));
  return supportedInputTypes;
}

/**
 * @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
 */
/** Cached result of whether the user's browser supports passive event listeners. */
let supportsPassiveEvents;
/**
 * Checks whether the user's browser supports passive event listeners.
 * See: https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
 */
function supportsPassiveEventListeners() {
  if (supportsPassiveEvents == null && typeof window !== 'undefined') {
    try {
      window.addEventListener('test', null, Object.defineProperty({}, 'passive', {
        get: () => 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.
 */
function normalizePassiveListenerOptions(options) {
  return supportsPassiveEventListeners() ? options : !!options.capture;
}

/**
 * @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
 */
/** Cached result of the way the browser handles the horizontal scroll axis in RTL mode. */
let rtlScrollAxisType;
/** Cached result of the check that indicates whether the browser supports scroll behaviors. */
let scrollBehaviorSupported;
/** Check whether the browser supports scroll behaviors. */
function supportsScrollBehavior() {
  if (scrollBehaviorSupported == null) {
    // If we're not in the browser, it can't be supported. Also check for `Element`, because
    // some projects stub out the global `document` during SSR which can throw us off.
    if (typeof document !== 'object' || !document || typeof Element !== 'function' || !Element) {
      scrollBehaviorSupported = false;
      return scrollBehaviorSupported;
    }
    // If the element can have a `scrollBehavior` style, we can be sure that it's supported.
    if ('scrollBehavior' in document.documentElement.style) {
      scrollBehaviorSupported = true;
    } else {
      // At this point we have 3 possibilities: `scrollTo` isn't supported at all, it's
      // supported but it doesn't handle scroll behavior, or it has been polyfilled.
      const scrollToFunction = Element.prototype.scrollTo;
      if (scrollToFunction) {
        // We can detect if the function has been polyfilled by calling `toString` on it. Native
        // functions are obfuscated using `[native code]`, whereas if it was overwritten we'd get
        // the actual function source. Via https://davidwalsh.name/detect-native-function. Consider
        // polyfilled functions as supporting scroll behavior.
        scrollBehaviorSupported = !/\{\s*\[native code\]\s*\}/.test(scrollToFunction.toString());
      } else {
        scrollBehaviorSupported = false;
      }
    }
  }
  return scrollBehaviorSupported;
}
/**
 * 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.
 */
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 0 /* RtlScrollAxisType.NORMAL */;
  }

  if (rtlScrollAxisType == null) {
    // Create a 1px wide scrolling container and a 2px wide content element.
    const scrollContainer = document.createElement('div');
    const containerStyle = scrollContainer.style;
    scrollContainer.dir = 'rtl';
    containerStyle.width = '1px';
    containerStyle.overflow = 'auto';
    containerStyle.visibility = 'hidden';
    containerStyle.pointerEvents = 'none';
    containerStyle.position = 'absolute';
    const content = document.createElement('div');
    const contentStyle = content.style;
    contentStyle.width = '2px';
    contentStyle.height = '1px';
    scrollContainer.appendChild(content);
    document.body.appendChild(scrollContainer);
    rtlScrollAxisType = 0 /* 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 ? 1 /* RtlScrollAxisType.NEGATED */ : 2 /* RtlScrollAxisType.INVERTED */;
    }

    scrollContainer.remove();
  }
  return rtlScrollAxisType;
}

/**
 * @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
 */
let shadowDomIsSupported;
/** Checks whether the user's browser support Shadow DOM. */
function _supportsShadowDom() {
  if (shadowDomIsSupported == null) {
    const head = typeof document !== 'undefined' ? document.head : null;
    shadowDomIsSupported = !!(head && (head.createShadowRoot || head.attachShadow));
  }
  return shadowDomIsSupported;
}
/** Gets the shadow root of an element, if supported and the element is inside the Shadow DOM. */
function _getShadowRoot(element) {
  if (_supportsShadowDom()) {
    const rootNode = element.getRootNode ? element.getRootNode() : null;
    // Note that this should be caught by `_supportsShadowDom`, but some
    // teams have been able to hit this code path on unsupported browsers.
    if (typeof ShadowRoot !== 'undefined' && ShadowRoot && rootNode instanceof ShadowRoot) {
      return rootNode;
    }
  }
  return null;
}
/**
 * Gets the currently-focused element on the page while
 * also piercing through Shadow DOM boundaries.
 */
function _getFocusedElementPierceShadowDom() {
  let activeElement = typeof document !== 'undefined' && document ? document.activeElement : null;
  while (activeElement && activeElement.shadowRoot) {
    const newActiveElement = activeElement.shadowRoot.activeElement;
    if (newActiveElement === activeElement) {
      break;
    } else {
      activeElement = newActiveElement;
    }
  }
  return activeElement;
}
/** Gets the target of an event while accounting for Shadow DOM. */
function _getEventTarget(event) {
  // If an event is bound outside the Shadow DOM, the `event.target` will
  // point to the shadow root so we have to use `composedPath` instead.
  return event.composedPath ? event.composedPath()[0] : event.target;
}

/**
 * @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
 */
/** Gets whether the code is currently running in a test environment. */
function _isTestEnvironment() {
  // We can't use `declare const` because it causes conflicts inside Google with the real typings
  // for these symbols and we can't read them off the global object, because they don't appear to
  // be attached there for some runners like Jest.
  // (see: https://github.com/angular/components/issues/23365#issuecomment-938146643)
  return (
    // @ts-ignore
    typeof __karma__ !== 'undefined' && !!__karma__ ||
    // @ts-ignore
    typeof jasmine !== 'undefined' && !!jasmine ||
    // @ts-ignore
    typeof jest !== 'undefined' && !!jest ||
    // @ts-ignore
    typeof Mocha !== 'undefined' && !!Mocha
  );
}

export { Platform, PlatformModule, _getEventTarget, _getFocusedElementPierceShadowDom, _getShadowRoot, _isTestEnvironment, _supportsShadowDom, getRtlScrollAxisType, getSupportedInputTypes, normalizePassiveListenerOptions, supportsPassiveEventListeners, supportsScrollBehavior };
//# sourceMappingURL=angular-platform.js.map
