puhui-go-web/.angular/cache/17.0.7/vite/deps/chunk-C2DNBB57.js

import {
  ALT,
  CONTROL,
  MAC_META,
  META,
  SHIFT
} from "./chunk-UMSNQQWJ.js";
import {
  BreakpointObserver
} from "./chunk-5OJ3CSUZ.js";
import {
  Platform,
  _getEventTarget,
  _getFocusedElementPierceShadowDom,
  _getShadowRoot,
  normalizePassiveListenerOptions
} from "./chunk-UPQZZZIG.js";
import {
  coerceElement,
  coerceNumberProperty
} from "./chunk-7XTJNSRU.js";
import {
  DOCUMENT
} from "./chunk-OSQBUYO6.js";
import {
  APP_ID,
  BehaviorSubject,
  Directive,
  ElementRef,
  EventEmitter,
  Inject,
  Injectable,
  InjectionToken,
  Input,
  NgModule,
  NgZone,
  Observable,
  Optional,
  Output,
  Subject,
  booleanAttribute,
  debounceTime,
  distinctUntilChanged,
  inject,
  of,
  setClassMetadata,
  skip,
  take,
  takeUntil,
  ɵɵInputTransformsFeature,
  ɵɵNgOnChangesFeature,
  ɵɵdefineDirective,
  ɵɵdefineInjectable,
  ɵɵdefineInjector,
  ɵɵdefineNgModule,
  ɵɵdirectiveInject,
  ɵɵinject
} from "./chunk-FGESKT7O.js";
import {
  __spreadValues
} from "./chunk-HSNDBVJ3.js";

// node_modules/@angular/cdk/fesm2022/observers.mjs
var _MutationObserverFactory = class _MutationObserverFactory {
  create(callback) {
    return typeof MutationObserver === "undefined" ? null : new MutationObserver(callback);
  }
};
_MutationObserverFactory.ɵfac = function MutationObserverFactory_Factory(t) {
  return new (t || _MutationObserverFactory)();
};
_MutationObserverFactory.ɵprov = ɵɵdefineInjectable({
  token: _MutationObserverFactory,
  factory: _MutationObserverFactory.ɵfac,
  providedIn: "root"
});
var MutationObserverFactory = _MutationObserverFactory;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(MutationObserverFactory, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], null, null);
})();
var _ContentObserver = class _ContentObserver {
  constructor(_mutationObserverFactory) {
    this._mutationObserverFactory = _mutationObserverFactory;
    this._observedElements = /* @__PURE__ */ new Map();
  }
  ngOnDestroy() {
    this._observedElements.forEach((_, element) => this._cleanupObserver(element));
  }
  observe(elementOrRef) {
    const element = coerceElement(elementOrRef);
    return new Observable((observer) => {
      const stream = this._observeElement(element);
      const subscription = stream.subscribe(observer);
      return () => {
        subscription.unsubscribe();
        this._unobserveElement(element);
      };
    });
  }
  /**
   * Observes the given element by using the existing MutationObserver if available, or creating a
   * new one if not.
   */
  _observeElement(element) {
    if (!this._observedElements.has(element)) {
      const stream = new Subject();
      const observer = this._mutationObserverFactory.create((mutations) => stream.next(mutations));
      if (observer) {
        observer.observe(element, {
          characterData: true,
          childList: true,
          subtree: true
        });
      }
      this._observedElements.set(element, {
        observer,
        stream,
        count: 1
      });
    } else {
      this._observedElements.get(element).count++;
    }
    return this._observedElements.get(element).stream;
  }
  /**
   * Un-observes the given element and cleans up the underlying MutationObserver if nobody else is
   * observing this element.
   */
  _unobserveElement(element) {
    if (this._observedElements.has(element)) {
      this._observedElements.get(element).count--;
      if (!this._observedElements.get(element).count) {
        this._cleanupObserver(element);
      }
    }
  }
  /** Clean up the underlying MutationObserver for the specified element. */
  _cleanupObserver(element) {
    if (this._observedElements.has(element)) {
      const {
        observer,
        stream
      } = this._observedElements.get(element);
      if (observer) {
        observer.disconnect();
      }
      stream.complete();
      this._observedElements.delete(element);
    }
  }
};
_ContentObserver.ɵfac = function ContentObserver_Factory(t) {
  return new (t || _ContentObserver)(ɵɵinject(MutationObserverFactory));
};
_ContentObserver.ɵprov = ɵɵdefineInjectable({
  token: _ContentObserver,
  factory: _ContentObserver.ɵfac,
  providedIn: "root"
});
var ContentObserver = _ContentObserver;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(ContentObserver, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: MutationObserverFactory
  }], null);
})();
var _CdkObserveContent = class _CdkObserveContent {
  /**
   * Whether observing content is disabled. This option can be used
   * to disconnect the underlying MutationObserver until it is needed.
   */
  get disabled() {
    return this._disabled;
  }
  set disabled(value) {
    this._disabled = value;
    this._disabled ? this._unsubscribe() : this._subscribe();
  }
  /** Debounce interval for emitting the changes. */
  get debounce() {
    return this._debounce;
  }
  set debounce(value) {
    this._debounce = coerceNumberProperty(value);
    this._subscribe();
  }
  constructor(_contentObserver, _elementRef, _ngZone) {
    this._contentObserver = _contentObserver;
    this._elementRef = _elementRef;
    this._ngZone = _ngZone;
    this.event = new EventEmitter();
    this._disabled = false;
    this._currentSubscription = null;
  }
  ngAfterContentInit() {
    if (!this._currentSubscription && !this.disabled) {
      this._subscribe();
    }
  }
  ngOnDestroy() {
    this._unsubscribe();
  }
  _subscribe() {
    this._unsubscribe();
    const stream = this._contentObserver.observe(this._elementRef);
    this._ngZone.runOutsideAngular(() => {
      this._currentSubscription = (this.debounce ? stream.pipe(debounceTime(this.debounce)) : stream).subscribe(this.event);
    });
  }
  _unsubscribe() {
    this._currentSubscription?.unsubscribe();
  }
};
_CdkObserveContent.ɵfac = function CdkObserveContent_Factory(t) {
  return new (t || _CdkObserveContent)(ɵɵdirectiveInject(ContentObserver), ɵɵdirectiveInject(ElementRef), ɵɵdirectiveInject(NgZone));
};
_CdkObserveContent.ɵdir = ɵɵdefineDirective({
  type: _CdkObserveContent,
  selectors: [["", "cdkObserveContent", ""]],
  inputs: {
    disabled: ["cdkObserveContentDisabled", "disabled", booleanAttribute],
    debounce: "debounce"
  },
  outputs: {
    event: "cdkObserveContent"
  },
  exportAs: ["cdkObserveContent"],
  features: [ɵɵInputTransformsFeature]
});
var CdkObserveContent = _CdkObserveContent;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(CdkObserveContent, [{
    type: Directive,
    args: [{
      selector: "[cdkObserveContent]",
      exportAs: "cdkObserveContent"
    }]
  }], () => [{
    type: ContentObserver
  }, {
    type: ElementRef
  }, {
    type: NgZone
  }], {
    event: [{
      type: Output,
      args: ["cdkObserveContent"]
    }],
    disabled: [{
      type: Input,
      args: [{
        alias: "cdkObserveContentDisabled",
        transform: booleanAttribute
      }]
    }],
    debounce: [{
      type: Input
    }]
  });
})();
var _ObserversModule = class _ObserversModule {
};
_ObserversModule.ɵfac = function ObserversModule_Factory(t) {
  return new (t || _ObserversModule)();
};
_ObserversModule.ɵmod = ɵɵdefineNgModule({
  type: _ObserversModule,
  declarations: [CdkObserveContent],
  exports: [CdkObserveContent]
});
_ObserversModule.ɵinj = ɵɵdefineInjector({
  providers: [MutationObserverFactory]
});
var ObserversModule = _ObserversModule;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(ObserversModule, [{
    type: NgModule,
    args: [{
      exports: [CdkObserveContent],
      declarations: [CdkObserveContent],
      providers: [MutationObserverFactory]
    }]
  }], null, null);
})();

// node_modules/@angular/cdk/fesm2022/a11y.mjs
var ID_DELIMITER = " ";
function addAriaReferencedId(el, attr, id) {
  const ids = getAriaReferenceIds(el, attr);
  if (ids.some((existingId) => existingId.trim() == id.trim())) {
    return;
  }
  ids.push(id.trim());
  el.setAttribute(attr, ids.join(ID_DELIMITER));
}
function removeAriaReferencedId(el, attr, id) {
  const ids = getAriaReferenceIds(el, attr);
  const filteredIds = ids.filter((val) => val != id.trim());
  if (filteredIds.length) {
    el.setAttribute(attr, filteredIds.join(ID_DELIMITER));
  } else {
    el.removeAttribute(attr);
  }
}
function getAriaReferenceIds(el, attr) {
  return (el.getAttribute(attr) || "").match(/\S+/g) || [];
}
var CDK_DESCRIBEDBY_ID_PREFIX = "cdk-describedby-message";
var CDK_DESCRIBEDBY_HOST_ATTRIBUTE = "cdk-describedby-host";
var nextId = 0;
var _AriaDescriber = class _AriaDescriber {
  constructor(_document, _platform) {
    this._platform = _platform;
    this._messageRegistry = /* @__PURE__ */ new Map();
    this._messagesContainer = null;
    this._id = `${nextId++}`;
    this._document = _document;
    this._id = inject(APP_ID) + "-" + nextId++;
  }
  describe(hostElement, message, role) {
    if (!this._canBeDescribed(hostElement, message)) {
      return;
    }
    const key = getKey(message, role);
    if (typeof message !== "string") {
      setMessageId(message, this._id);
      this._messageRegistry.set(key, {
        messageElement: message,
        referenceCount: 0
      });
    } else if (!this._messageRegistry.has(key)) {
      this._createMessageElement(message, role);
    }
    if (!this._isElementDescribedByMessage(hostElement, key)) {
      this._addMessageReference(hostElement, key);
    }
  }
  removeDescription(hostElement, message, role) {
    if (!message || !this._isElementNode(hostElement)) {
      return;
    }
    const key = getKey(message, role);
    if (this._isElementDescribedByMessage(hostElement, key)) {
      this._removeMessageReference(hostElement, key);
    }
    if (typeof message === "string") {
      const registeredMessage = this._messageRegistry.get(key);
      if (registeredMessage && registeredMessage.referenceCount === 0) {
        this._deleteMessageElement(key);
      }
    }
    if (this._messagesContainer?.childNodes.length === 0) {
      this._messagesContainer.remove();
      this._messagesContainer = null;
    }
  }
  /** Unregisters all created message elements and removes the message container. */
  ngOnDestroy() {
    const describedElements = this._document.querySelectorAll(`[${CDK_DESCRIBEDBY_HOST_ATTRIBUTE}="${this._id}"]`);
    for (let i = 0; i < describedElements.length; i++) {
      this._removeCdkDescribedByReferenceIds(describedElements[i]);
      describedElements[i].removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);
    }
    this._messagesContainer?.remove();
    this._messagesContainer = null;
    this._messageRegistry.clear();
  }
  /**
   * Creates a new element in the visually hidden message container element with the message
   * as its content and adds it to the message registry.
   */
  _createMessageElement(message, role) {
    const messageElement = this._document.createElement("div");
    setMessageId(messageElement, this._id);
    messageElement.textContent = message;
    if (role) {
      messageElement.setAttribute("role", role);
    }
    this._createMessagesContainer();
    this._messagesContainer.appendChild(messageElement);
    this._messageRegistry.set(getKey(message, role), {
      messageElement,
      referenceCount: 0
    });
  }
  /** Deletes the message element from the global messages container. */
  _deleteMessageElement(key) {
    this._messageRegistry.get(key)?.messageElement?.remove();
    this._messageRegistry.delete(key);
  }
  /** Creates the global container for all aria-describedby messages. */
  _createMessagesContainer() {
    if (this._messagesContainer) {
      return;
    }
    const containerClassName = "cdk-describedby-message-container";
    const serverContainers = this._document.querySelectorAll(`.${containerClassName}[platform="server"]`);
    for (let i = 0; i < serverContainers.length; i++) {
      serverContainers[i].remove();
    }
    const messagesContainer = this._document.createElement("div");
    messagesContainer.style.visibility = "hidden";
    messagesContainer.classList.add(containerClassName);
    messagesContainer.classList.add("cdk-visually-hidden");
    if (this._platform && !this._platform.isBrowser) {
      messagesContainer.setAttribute("platform", "server");
    }
    this._document.body.appendChild(messagesContainer);
    this._messagesContainer = messagesContainer;
  }
  /** Removes all cdk-describedby messages that are hosted through the element. */
  _removeCdkDescribedByReferenceIds(element) {
    const originalReferenceIds = getAriaReferenceIds(element, "aria-describedby").filter((id) => id.indexOf(CDK_DESCRIBEDBY_ID_PREFIX) != 0);
    element.setAttribute("aria-describedby", originalReferenceIds.join(" "));
  }
  /**
   * Adds a message reference to the element using aria-describedby and increments the registered
   * message's reference count.
   */
  _addMessageReference(element, key) {
    const registeredMessage = this._messageRegistry.get(key);
    addAriaReferencedId(element, "aria-describedby", registeredMessage.messageElement.id);
    element.setAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE, this._id);
    registeredMessage.referenceCount++;
  }
  /**
   * Removes a message reference from the element using aria-describedby
   * and decrements the registered message's reference count.
   */
  _removeMessageReference(element, key) {
    const registeredMessage = this._messageRegistry.get(key);
    registeredMessage.referenceCount--;
    removeAriaReferencedId(element, "aria-describedby", registeredMessage.messageElement.id);
    element.removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);
  }
  /** Returns true if the element has been described by the provided message ID. */
  _isElementDescribedByMessage(element, key) {
    const referenceIds = getAriaReferenceIds(element, "aria-describedby");
    const registeredMessage = this._messageRegistry.get(key);
    const messageId = registeredMessage && registeredMessage.messageElement.id;
    return !!messageId && referenceIds.indexOf(messageId) != -1;
  }
  /** Determines whether a message can be described on a particular element. */
  _canBeDescribed(element, message) {
    if (!this._isElementNode(element)) {
      return false;
    }
    if (message && typeof message === "object") {
      return true;
    }
    const trimmedMessage = message == null ? "" : `${message}`.trim();
    const ariaLabel = element.getAttribute("aria-label");
    return trimmedMessage ? !ariaLabel || ariaLabel.trim() !== trimmedMessage : false;
  }
  /** Checks whether a node is an Element node. */
  _isElementNode(element) {
    return element.nodeType === this._document.ELEMENT_NODE;
  }
};
_AriaDescriber.ɵfac = function AriaDescriber_Factory(t) {
  return new (t || _AriaDescriber)(ɵɵinject(DOCUMENT), ɵɵinject(Platform));
};
_AriaDescriber.ɵprov = ɵɵdefineInjectable({
  token: _AriaDescriber,
  factory: _AriaDescriber.ɵfac,
  providedIn: "root"
});
var AriaDescriber = _AriaDescriber;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(AriaDescriber, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: void 0,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }, {
    type: Platform
  }], null);
})();
function getKey(message, role) {
  return typeof message === "string" ? `${role || ""}/${message}` : message;
}
function setMessageId(element, serviceId) {
  if (!element.id) {
    element.id = `${CDK_DESCRIBEDBY_ID_PREFIX}-${serviceId}-${nextId++}`;
  }
}
var _InteractivityChecker = class _InteractivityChecker {
  constructor(_platform) {
    this._platform = _platform;
  }
  /**
   * Gets whether an element is disabled.
   *
   * @param element Element to be checked.
   * @returns Whether the element is disabled.
   */
  isDisabled(element) {
    return element.hasAttribute("disabled");
  }
  /**
   * Gets whether an element is visible for the purposes of interactivity.
   *
   * This will capture states like `display: none` and `visibility: hidden`, but not things like
   * being clipped by an `overflow: hidden` parent or being outside the viewport.
   *
   * @returns Whether the element is visible.
   */
  isVisible(element) {
    return hasGeometry(element) && getComputedStyle(element).visibility === "visible";
  }
  /**
   * Gets whether an element can be reached via Tab key.
   * Assumes that the element has already been checked with isFocusable.
   *
   * @param element Element to be checked.
   * @returns Whether the element is tabbable.
   */
  isTabbable(element) {
    if (!this._platform.isBrowser) {
      return false;
    }
    const frameElement = getFrameElement(getWindow(element));
    if (frameElement) {
      if (getTabIndexValue(frameElement) === -1) {
        return false;
      }
      if (!this.isVisible(frameElement)) {
        return false;
      }
    }
    let nodeName = element.nodeName.toLowerCase();
    let tabIndexValue = getTabIndexValue(element);
    if (element.hasAttribute("contenteditable")) {
      return tabIndexValue !== -1;
    }
    if (nodeName === "iframe" || nodeName === "object") {
      return false;
    }
    if (this._platform.WEBKIT && this._platform.IOS && !isPotentiallyTabbableIOS(element)) {
      return false;
    }
    if (nodeName === "audio") {
      if (!element.hasAttribute("controls")) {
        return false;
      }
      return tabIndexValue !== -1;
    }
    if (nodeName === "video") {
      if (tabIndexValue === -1) {
        return false;
      }
      if (tabIndexValue !== null) {
        return true;
      }
      return this._platform.FIREFOX || element.hasAttribute("controls");
    }
    return element.tabIndex >= 0;
  }
  /**
   * Gets whether an element can be focused by the user.
   *
   * @param element Element to be checked.
   * @param config The config object with options to customize this method's behavior
   * @returns Whether the element is focusable.
   */
  isFocusable(element, config) {
    return isPotentiallyFocusable(element) && !this.isDisabled(element) && (config?.ignoreVisibility || this.isVisible(element));
  }
};
_InteractivityChecker.ɵfac = function InteractivityChecker_Factory(t) {
  return new (t || _InteractivityChecker)(ɵɵinject(Platform));
};
_InteractivityChecker.ɵprov = ɵɵdefineInjectable({
  token: _InteractivityChecker,
  factory: _InteractivityChecker.ɵfac,
  providedIn: "root"
});
var InteractivityChecker = _InteractivityChecker;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(InteractivityChecker, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: Platform
  }], null);
})();
function getFrameElement(window2) {
  try {
    return window2.frameElement;
  } catch {
    return null;
  }
}
function hasGeometry(element) {
  return !!(element.offsetWidth || element.offsetHeight || typeof element.getClientRects === "function" && element.getClientRects().length);
}
function isNativeFormElement(element) {
  let nodeName = element.nodeName.toLowerCase();
  return nodeName === "input" || nodeName === "select" || nodeName === "button" || nodeName === "textarea";
}
function isHiddenInput(element) {
  return isInputElement(element) && element.type == "hidden";
}
function isAnchorWithHref(element) {
  return isAnchorElement(element) && element.hasAttribute("href");
}
function isInputElement(element) {
  return element.nodeName.toLowerCase() == "input";
}
function isAnchorElement(element) {
  return element.nodeName.toLowerCase() == "a";
}
function hasValidTabIndex(element) {
  if (!element.hasAttribute("tabindex") || element.tabIndex === void 0) {
    return false;
  }
  let tabIndex = element.getAttribute("tabindex");
  return !!(tabIndex && !isNaN(parseInt(tabIndex, 10)));
}
function getTabIndexValue(element) {
  if (!hasValidTabIndex(element)) {
    return null;
  }
  const tabIndex = parseInt(element.getAttribute("tabindex") || "", 10);
  return isNaN(tabIndex) ? -1 : tabIndex;
}
function isPotentiallyTabbableIOS(element) {
  let nodeName = element.nodeName.toLowerCase();
  let inputType = nodeName === "input" && element.type;
  return inputType === "text" || inputType === "password" || nodeName === "select" || nodeName === "textarea";
}
function isPotentiallyFocusable(element) {
  if (isHiddenInput(element)) {
    return false;
  }
  return isNativeFormElement(element) || isAnchorWithHref(element) || element.hasAttribute("contenteditable") || hasValidTabIndex(element);
}
function getWindow(node) {
  return node.ownerDocument && node.ownerDocument.defaultView || window;
}
var FocusTrap = class {
  /** Whether the focus trap is active. */
  get enabled() {
    return this._enabled;
  }
  set enabled(value) {
    this._enabled = value;
    if (this._startAnchor && this._endAnchor) {
      this._toggleAnchorTabIndex(value, this._startAnchor);
      this._toggleAnchorTabIndex(value, this._endAnchor);
    }
  }
  constructor(_element, _checker, _ngZone, _document, deferAnchors = false) {
    this._element = _element;
    this._checker = _checker;
    this._ngZone = _ngZone;
    this._document = _document;
    this._hasAttached = false;
    this.startAnchorListener = () => this.focusLastTabbableElement();
    this.endAnchorListener = () => this.focusFirstTabbableElement();
    this._enabled = true;
    if (!deferAnchors) {
      this.attachAnchors();
    }
  }
  /** Destroys the focus trap by cleaning up the anchors. */
  destroy() {
    const startAnchor = this._startAnchor;
    const endAnchor = this._endAnchor;
    if (startAnchor) {
      startAnchor.removeEventListener("focus", this.startAnchorListener);
      startAnchor.remove();
    }
    if (endAnchor) {
      endAnchor.removeEventListener("focus", this.endAnchorListener);
      endAnchor.remove();
    }
    this._startAnchor = this._endAnchor = null;
    this._hasAttached = false;
  }
  /**
   * Inserts the anchors into the DOM. This is usually done automatically
   * in the constructor, but can be deferred for cases like directives with `*ngIf`.
   * @returns Whether the focus trap managed to attach successfully. This may not be the case
   * if the target element isn't currently in the DOM.
   */
  attachAnchors() {
    if (this._hasAttached) {
      return true;
    }
    this._ngZone.runOutsideAngular(() => {
      if (!this._startAnchor) {
        this._startAnchor = this._createAnchor();
        this._startAnchor.addEventListener("focus", this.startAnchorListener);
      }
      if (!this._endAnchor) {
        this._endAnchor = this._createAnchor();
        this._endAnchor.addEventListener("focus", this.endAnchorListener);
      }
    });
    if (this._element.parentNode) {
      this._element.parentNode.insertBefore(this._startAnchor, this._element);
      this._element.parentNode.insertBefore(this._endAnchor, this._element.nextSibling);
      this._hasAttached = true;
    }
    return this._hasAttached;
  }
  /**
   * Waits for the zone to stabilize, then focuses the first tabbable element.
   * @returns Returns a promise that resolves with a boolean, depending
   * on whether focus was moved successfully.
   */
  focusInitialElementWhenReady(options) {
    return new Promise((resolve) => {
      this._executeOnStable(() => resolve(this.focusInitialElement(options)));
    });
  }
  /**
   * Waits for the zone to stabilize, then focuses
   * the first tabbable element within the focus trap region.
   * @returns Returns a promise that resolves with a boolean, depending
   * on whether focus was moved successfully.
   */
  focusFirstTabbableElementWhenReady(options) {
    return new Promise((resolve) => {
      this._executeOnStable(() => resolve(this.focusFirstTabbableElement(options)));
    });
  }
  /**
   * Waits for the zone to stabilize, then focuses
   * the last tabbable element within the focus trap region.
   * @returns Returns a promise that resolves with a boolean, depending
   * on whether focus was moved successfully.
   */
  focusLastTabbableElementWhenReady(options) {
    return new Promise((resolve) => {
      this._executeOnStable(() => resolve(this.focusLastTabbableElement(options)));
    });
  }
  /**
   * Get the specified boundary element of the trapped region.
   * @param bound The boundary to get (start or end of trapped region).
   * @returns The boundary element.
   */
  _getRegionBoundary(bound) {
    const markers = this._element.querySelectorAll(`[cdk-focus-region-${bound}], [cdkFocusRegion${bound}], [cdk-focus-${bound}]`);
    if (typeof ngDevMode === "undefined" || ngDevMode) {
      for (let i = 0; i < markers.length; i++) {
        if (markers[i].hasAttribute(`cdk-focus-${bound}`)) {
          console.warn(`Found use of deprecated attribute 'cdk-focus-${bound}', use 'cdkFocusRegion${bound}' instead. The deprecated attribute will be removed in 8.0.0.`, markers[i]);
        } else if (markers[i].hasAttribute(`cdk-focus-region-${bound}`)) {
          console.warn(`Found use of deprecated attribute 'cdk-focus-region-${bound}', use 'cdkFocusRegion${bound}' instead. The deprecated attribute will be removed in 8.0.0.`, markers[i]);
        }
      }
    }
    if (bound == "start") {
      return markers.length ? markers[0] : this._getFirstTabbableElement(this._element);
    }
    return markers.length ? markers[markers.length - 1] : this._getLastTabbableElement(this._element);
  }
  /**
   * Focuses the element that should be focused when the focus trap is initialized.
   * @returns Whether focus was moved successfully.
   */
  focusInitialElement(options) {
    const redirectToElement = this._element.querySelector(`[cdk-focus-initial], [cdkFocusInitial]`);
    if (redirectToElement) {
      if ((typeof ngDevMode === "undefined" || ngDevMode) && redirectToElement.hasAttribute(`cdk-focus-initial`)) {
        console.warn(`Found use of deprecated attribute 'cdk-focus-initial', use 'cdkFocusInitial' instead. The deprecated attribute will be removed in 8.0.0`, redirectToElement);
      }
      if ((typeof ngDevMode === "undefined" || ngDevMode) && !this._checker.isFocusable(redirectToElement)) {
        console.warn(`Element matching '[cdkFocusInitial]' is not focusable.`, redirectToElement);
      }
      if (!this._checker.isFocusable(redirectToElement)) {
        const focusableChild = this._getFirstTabbableElement(redirectToElement);
        focusableChild?.focus(options);
        return !!focusableChild;
      }
      redirectToElement.focus(options);
      return true;
    }
    return this.focusFirstTabbableElement(options);
  }
  /**
   * Focuses the first tabbable element within the focus trap region.
   * @returns Whether focus was moved successfully.
   */
  focusFirstTabbableElement(options) {
    const redirectToElement = this._getRegionBoundary("start");
    if (redirectToElement) {
      redirectToElement.focus(options);
    }
    return !!redirectToElement;
  }
  /**
   * Focuses the last tabbable element within the focus trap region.
   * @returns Whether focus was moved successfully.
   */
  focusLastTabbableElement(options) {
    const redirectToElement = this._getRegionBoundary("end");
    if (redirectToElement) {
      redirectToElement.focus(options);
    }
    return !!redirectToElement;
  }
  /**
   * Checks whether the focus trap has successfully been attached.
   */
  hasAttached() {
    return this._hasAttached;
  }
  /** Get the first tabbable element from a DOM subtree (inclusive). */
  _getFirstTabbableElement(root) {
    if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {
      return root;
    }
    const children = root.children;
    for (let i = 0; i < children.length; i++) {
      const tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE ? this._getFirstTabbableElement(children[i]) : null;
      if (tabbableChild) {
        return tabbableChild;
      }
    }
    return null;
  }
  /** Get the last tabbable element from a DOM subtree (inclusive). */
  _getLastTabbableElement(root) {
    if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {
      return root;
    }
    const children = root.children;
    for (let i = children.length - 1; i >= 0; i--) {
      const tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE ? this._getLastTabbableElement(children[i]) : null;
      if (tabbableChild) {
        return tabbableChild;
      }
    }
    return null;
  }
  /** Creates an anchor element. */
  _createAnchor() {
    const anchor = this._document.createElement("div");
    this._toggleAnchorTabIndex(this._enabled, anchor);
    anchor.classList.add("cdk-visually-hidden");
    anchor.classList.add("cdk-focus-trap-anchor");
    anchor.setAttribute("aria-hidden", "true");
    return anchor;
  }
  /**
   * Toggles the `tabindex` of an anchor, based on the enabled state of the focus trap.
   * @param isEnabled Whether the focus trap is enabled.
   * @param anchor Anchor on which to toggle the tabindex.
   */
  _toggleAnchorTabIndex(isEnabled, anchor) {
    isEnabled ? anchor.setAttribute("tabindex", "0") : anchor.removeAttribute("tabindex");
  }
  /**
   * Toggles the`tabindex` of both anchors to either trap Tab focus or allow it to escape.
   * @param enabled: Whether the anchors should trap Tab.
   */
  toggleAnchors(enabled) {
    if (this._startAnchor && this._endAnchor) {
      this._toggleAnchorTabIndex(enabled, this._startAnchor);
      this._toggleAnchorTabIndex(enabled, this._endAnchor);
    }
  }
  /** Executes a function when the zone is stable. */
  _executeOnStable(fn) {
    if (this._ngZone.isStable) {
      fn();
    } else {
      this._ngZone.onStable.pipe(take(1)).subscribe(fn);
    }
  }
};
var _FocusTrapFactory = class _FocusTrapFactory {
  constructor(_checker, _ngZone, _document) {
    this._checker = _checker;
    this._ngZone = _ngZone;
    this._document = _document;
  }
  /**
   * Creates a focus-trapped region around the given element.
   * @param element The element around which focus will be trapped.
   * @param deferCaptureElements Defers the creation of focus-capturing elements to be done
   *     manually by the user.
   * @returns The created focus trap instance.
   */
  create(element, deferCaptureElements = false) {
    return new FocusTrap(element, this._checker, this._ngZone, this._document, deferCaptureElements);
  }
};
_FocusTrapFactory.ɵfac = function FocusTrapFactory_Factory(t) {
  return new (t || _FocusTrapFactory)(ɵɵinject(InteractivityChecker), ɵɵinject(NgZone), ɵɵinject(DOCUMENT));
};
_FocusTrapFactory.ɵprov = ɵɵdefineInjectable({
  token: _FocusTrapFactory,
  factory: _FocusTrapFactory.ɵfac,
  providedIn: "root"
});
var FocusTrapFactory = _FocusTrapFactory;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(FocusTrapFactory, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: InteractivityChecker
  }, {
    type: NgZone
  }, {
    type: void 0,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }], null);
})();
var _CdkTrapFocus = class _CdkTrapFocus {
  /** Whether the focus trap is active. */
  get enabled() {
    return this.focusTrap.enabled;
  }
  set enabled(value) {
    this.focusTrap.enabled = value;
  }
  constructor(_elementRef, _focusTrapFactory, _document) {
    this._elementRef = _elementRef;
    this._focusTrapFactory = _focusTrapFactory;
    this._previouslyFocusedElement = null;
    this.focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement, true);
  }
  ngOnDestroy() {
    this.focusTrap.destroy();
    if (this._previouslyFocusedElement) {
      this._previouslyFocusedElement.focus();
      this._previouslyFocusedElement = null;
    }
  }
  ngAfterContentInit() {
    this.focusTrap.attachAnchors();
    if (this.autoCapture) {
      this._captureFocus();
    }
  }
  ngDoCheck() {
    if (!this.focusTrap.hasAttached()) {
      this.focusTrap.attachAnchors();
    }
  }
  ngOnChanges(changes) {
    const autoCaptureChange = changes["autoCapture"];
    if (autoCaptureChange && !autoCaptureChange.firstChange && this.autoCapture && this.focusTrap.hasAttached()) {
      this._captureFocus();
    }
  }
  _captureFocus() {
    this._previouslyFocusedElement = _getFocusedElementPierceShadowDom();
    this.focusTrap.focusInitialElementWhenReady();
  }
};
_CdkTrapFocus.ɵfac = function CdkTrapFocus_Factory(t) {
  return new (t || _CdkTrapFocus)(ɵɵdirectiveInject(ElementRef), ɵɵdirectiveInject(FocusTrapFactory), ɵɵdirectiveInject(DOCUMENT));
};
_CdkTrapFocus.ɵdir = ɵɵdefineDirective({
  type: _CdkTrapFocus,
  selectors: [["", "cdkTrapFocus", ""]],
  inputs: {
    enabled: ["cdkTrapFocus", "enabled", booleanAttribute],
    autoCapture: ["cdkTrapFocusAutoCapture", "autoCapture", booleanAttribute]
  },
  exportAs: ["cdkTrapFocus"],
  features: [ɵɵInputTransformsFeature, ɵɵNgOnChangesFeature]
});
var CdkTrapFocus = _CdkTrapFocus;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(CdkTrapFocus, [{
    type: Directive,
    args: [{
      selector: "[cdkTrapFocus]",
      exportAs: "cdkTrapFocus"
    }]
  }], () => [{
    type: ElementRef
  }, {
    type: FocusTrapFactory
  }, {
    type: void 0,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }], {
    enabled: [{
      type: Input,
      args: [{
        alias: "cdkTrapFocus",
        transform: booleanAttribute
      }]
    }],
    autoCapture: [{
      type: Input,
      args: [{
        alias: "cdkTrapFocusAutoCapture",
        transform: booleanAttribute
      }]
    }]
  });
})();
var ConfigurableFocusTrap = class extends FocusTrap {
  /** Whether the FocusTrap is enabled. */
  get enabled() {
    return this._enabled;
  }
  set enabled(value) {
    this._enabled = value;
    if (this._enabled) {
      this._focusTrapManager.register(this);
    } else {
      this._focusTrapManager.deregister(this);
    }
  }
  constructor(_element, _checker, _ngZone, _document, _focusTrapManager, _inertStrategy, config) {
    super(_element, _checker, _ngZone, _document, config.defer);
    this._focusTrapManager = _focusTrapManager;
    this._inertStrategy = _inertStrategy;
    this._focusTrapManager.register(this);
  }
  /** Notifies the FocusTrapManager that this FocusTrap will be destroyed. */
  destroy() {
    this._focusTrapManager.deregister(this);
    super.destroy();
  }
  /** @docs-private Implemented as part of ManagedFocusTrap. */
  _enable() {
    this._inertStrategy.preventFocus(this);
    this.toggleAnchors(true);
  }
  /** @docs-private Implemented as part of ManagedFocusTrap. */
  _disable() {
    this._inertStrategy.allowFocus(this);
    this.toggleAnchors(false);
  }
};
var FOCUS_TRAP_INERT_STRATEGY = new InjectionToken("FOCUS_TRAP_INERT_STRATEGY");
var EventListenerFocusTrapInertStrategy = class {
  constructor() {
    this._listener = null;
  }
  /** Adds a document event listener that keeps focus inside the FocusTrap. */
  preventFocus(focusTrap) {
    if (this._listener) {
      focusTrap._document.removeEventListener("focus", this._listener, true);
    }
    this._listener = (e) => this._trapFocus(focusTrap, e);
    focusTrap._ngZone.runOutsideAngular(() => {
      focusTrap._document.addEventListener("focus", this._listener, true);
    });
  }
  /** Removes the event listener added in preventFocus. */
  allowFocus(focusTrap) {
    if (!this._listener) {
      return;
    }
    focusTrap._document.removeEventListener("focus", this._listener, true);
    this._listener = null;
  }
  /**
   * Refocuses the first element in the FocusTrap if the focus event target was outside
   * the FocusTrap.
   *
   * This is an event listener callback. The event listener is added in runOutsideAngular,
   * so all this code runs outside Angular as well.
   */
  _trapFocus(focusTrap, event) {
    const target = event.target;
    const focusTrapRoot = focusTrap._element;
    if (target && !focusTrapRoot.contains(target) && !target.closest?.("div.cdk-overlay-pane")) {
      setTimeout(() => {
        if (focusTrap.enabled && !focusTrapRoot.contains(focusTrap._document.activeElement)) {
          focusTrap.focusFirstTabbableElement();
        }
      });
    }
  }
};
var _FocusTrapManager = class _FocusTrapManager {
  constructor() {
    this._focusTrapStack = [];
  }
  /**
   * Disables the FocusTrap at the top of the stack, and then pushes
   * the new FocusTrap onto the stack.
   */
  register(focusTrap) {
    this._focusTrapStack = this._focusTrapStack.filter((ft) => ft !== focusTrap);
    let stack = this._focusTrapStack;
    if (stack.length) {
      stack[stack.length - 1]._disable();
    }
    stack.push(focusTrap);
    focusTrap._enable();
  }
  /**
   * Removes the FocusTrap from the stack, and activates the
   * FocusTrap that is the new top of the stack.
   */
  deregister(focusTrap) {
    focusTrap._disable();
    const stack = this._focusTrapStack;
    const i = stack.indexOf(focusTrap);
    if (i !== -1) {
      stack.splice(i, 1);
      if (stack.length) {
        stack[stack.length - 1]._enable();
      }
    }
  }
};
_FocusTrapManager.ɵfac = function FocusTrapManager_Factory(t) {
  return new (t || _FocusTrapManager)();
};
_FocusTrapManager.ɵprov = ɵɵdefineInjectable({
  token: _FocusTrapManager,
  factory: _FocusTrapManager.ɵfac,
  providedIn: "root"
});
var FocusTrapManager = _FocusTrapManager;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(FocusTrapManager, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], null, null);
})();
var _ConfigurableFocusTrapFactory = class _ConfigurableFocusTrapFactory {
  constructor(_checker, _ngZone, _focusTrapManager, _document, _inertStrategy) {
    this._checker = _checker;
    this._ngZone = _ngZone;
    this._focusTrapManager = _focusTrapManager;
    this._document = _document;
    this._inertStrategy = _inertStrategy || new EventListenerFocusTrapInertStrategy();
  }
  create(element, config = {
    defer: false
  }) {
    let configObject;
    if (typeof config === "boolean") {
      configObject = {
        defer: config
      };
    } else {
      configObject = config;
    }
    return new ConfigurableFocusTrap(element, this._checker, this._ngZone, this._document, this._focusTrapManager, this._inertStrategy, configObject);
  }
};
_ConfigurableFocusTrapFactory.ɵfac = function ConfigurableFocusTrapFactory_Factory(t) {
  return new (t || _ConfigurableFocusTrapFactory)(ɵɵinject(InteractivityChecker), ɵɵinject(NgZone), ɵɵinject(FocusTrapManager), ɵɵinject(DOCUMENT), ɵɵinject(FOCUS_TRAP_INERT_STRATEGY, 8));
};
_ConfigurableFocusTrapFactory.ɵprov = ɵɵdefineInjectable({
  token: _ConfigurableFocusTrapFactory,
  factory: _ConfigurableFocusTrapFactory.ɵfac,
  providedIn: "root"
});
var ConfigurableFocusTrapFactory = _ConfigurableFocusTrapFactory;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(ConfigurableFocusTrapFactory, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: InteractivityChecker
  }, {
    type: NgZone
  }, {
    type: FocusTrapManager
  }, {
    type: void 0,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }, {
    type: void 0,
    decorators: [{
      type: Optional
    }, {
      type: Inject,
      args: [FOCUS_TRAP_INERT_STRATEGY]
    }]
  }], null);
})();
function isFakeMousedownFromScreenReader(event) {
  return event.buttons === 0 || event.detail === 0;
}
function isFakeTouchstartFromScreenReader(event) {
  const touch = event.touches && event.touches[0] || event.changedTouches && event.changedTouches[0];
  return !!touch && touch.identifier === -1 && (touch.radiusX == null || touch.radiusX === 1) && (touch.radiusY == null || touch.radiusY === 1);
}
var INPUT_MODALITY_DETECTOR_OPTIONS = new InjectionToken("cdk-input-modality-detector-options");
var INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS = {
  ignoreKeys: [ALT, CONTROL, MAC_META, META, SHIFT]
};
var TOUCH_BUFFER_MS = 650;
var modalityEventListenerOptions = normalizePassiveListenerOptions({
  passive: true,
  capture: true
});
var _InputModalityDetector = class _InputModalityDetector {
  /** The most recently detected input modality. */
  get mostRecentModality() {
    return this._modality.value;
  }
  constructor(_platform, ngZone, document2, options) {
    this._platform = _platform;
    this._mostRecentTarget = null;
    this._modality = new BehaviorSubject(null);
    this._lastTouchMs = 0;
    this._onKeydown = (event) => {
      if (this._options?.ignoreKeys?.some((keyCode) => keyCode === event.keyCode)) {
        return;
      }
      this._modality.next("keyboard");
      this._mostRecentTarget = _getEventTarget(event);
    };
    this._onMousedown = (event) => {
      if (Date.now() - this._lastTouchMs < TOUCH_BUFFER_MS) {
        return;
      }
      this._modality.next(isFakeMousedownFromScreenReader(event) ? "keyboard" : "mouse");
      this._mostRecentTarget = _getEventTarget(event);
    };
    this._onTouchstart = (event) => {
      if (isFakeTouchstartFromScreenReader(event)) {
        this._modality.next("keyboard");
        return;
      }
      this._lastTouchMs = Date.now();
      this._modality.next("touch");
      this._mostRecentTarget = _getEventTarget(event);
    };
    this._options = __spreadValues(__spreadValues({}, INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS), options);
    this.modalityDetected = this._modality.pipe(skip(1));
    this.modalityChanged = this.modalityDetected.pipe(distinctUntilChanged());
    if (_platform.isBrowser) {
      ngZone.runOutsideAngular(() => {
        document2.addEventListener("keydown", this._onKeydown, modalityEventListenerOptions);
        document2.addEventListener("mousedown", this._onMousedown, modalityEventListenerOptions);
        document2.addEventListener("touchstart", this._onTouchstart, modalityEventListenerOptions);
      });
    }
  }
  ngOnDestroy() {
    this._modality.complete();
    if (this._platform.isBrowser) {
      document.removeEventListener("keydown", this._onKeydown, modalityEventListenerOptions);
      document.removeEventListener("mousedown", this._onMousedown, modalityEventListenerOptions);
      document.removeEventListener("touchstart", this._onTouchstart, modalityEventListenerOptions);
    }
  }
};
_InputModalityDetector.ɵfac = function InputModalityDetector_Factory(t) {
  return new (t || _InputModalityDetector)(ɵɵinject(Platform), ɵɵinject(NgZone), ɵɵinject(DOCUMENT), ɵɵinject(INPUT_MODALITY_DETECTOR_OPTIONS, 8));
};
_InputModalityDetector.ɵprov = ɵɵdefineInjectable({
  token: _InputModalityDetector,
  factory: _InputModalityDetector.ɵfac,
  providedIn: "root"
});
var InputModalityDetector = _InputModalityDetector;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(InputModalityDetector, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: Platform
  }, {
    type: NgZone
  }, {
    type: Document,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }, {
    type: void 0,
    decorators: [{
      type: Optional
    }, {
      type: Inject,
      args: [INPUT_MODALITY_DETECTOR_OPTIONS]
    }]
  }], null);
})();
var LIVE_ANNOUNCER_ELEMENT_TOKEN = new InjectionToken("liveAnnouncerElement", {
  providedIn: "root",
  factory: LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY
});
function LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY() {
  return null;
}
var LIVE_ANNOUNCER_DEFAULT_OPTIONS = new InjectionToken("LIVE_ANNOUNCER_DEFAULT_OPTIONS");
var uniqueIds = 0;
var _LiveAnnouncer = class _LiveAnnouncer {
  constructor(elementToken, _ngZone, _document, _defaultOptions) {
    this._ngZone = _ngZone;
    this._defaultOptions = _defaultOptions;
    this._document = _document;
    this._liveElement = elementToken || this._createLiveElement();
  }
  announce(message, ...args) {
    const defaultOptions = this._defaultOptions;
    let politeness;
    let duration;
    if (args.length === 1 && typeof args[0] === "number") {
      duration = args[0];
    } else {
      [politeness, duration] = args;
    }
    this.clear();
    clearTimeout(this._previousTimeout);
    if (!politeness) {
      politeness = defaultOptions && defaultOptions.politeness ? defaultOptions.politeness : "polite";
    }
    if (duration == null && defaultOptions) {
      duration = defaultOptions.duration;
    }
    this._liveElement.setAttribute("aria-live", politeness);
    if (this._liveElement.id) {
      this._exposeAnnouncerToModals(this._liveElement.id);
    }
    return this._ngZone.runOutsideAngular(() => {
      if (!this._currentPromise) {
        this._currentPromise = new Promise((resolve) => this._currentResolve = resolve);
      }
      clearTimeout(this._previousTimeout);
      this._previousTimeout = setTimeout(() => {
        this._liveElement.textContent = message;
        if (typeof duration === "number") {
          this._previousTimeout = setTimeout(() => this.clear(), duration);
        }
        this._currentResolve();
        this._currentPromise = this._currentResolve = void 0;
      }, 100);
      return this._currentPromise;
    });
  }
  /**
   * Clears the current text from the announcer element. Can be used to prevent
   * screen readers from reading the text out again while the user is going
   * through the page landmarks.
   */
  clear() {
    if (this._liveElement) {
      this._liveElement.textContent = "";
    }
  }
  ngOnDestroy() {
    clearTimeout(this._previousTimeout);
    this._liveElement?.remove();
    this._liveElement = null;
    this._currentResolve?.();
    this._currentPromise = this._currentResolve = void 0;
  }
  _createLiveElement() {
    const elementClass = "cdk-live-announcer-element";
    const previousElements = this._document.getElementsByClassName(elementClass);
    const liveEl = this._document.createElement("div");
    for (let i = 0; i < previousElements.length; i++) {
      previousElements[i].remove();
    }
    liveEl.classList.add(elementClass);
    liveEl.classList.add("cdk-visually-hidden");
    liveEl.setAttribute("aria-atomic", "true");
    liveEl.setAttribute("aria-live", "polite");
    liveEl.id = `cdk-live-announcer-${uniqueIds++}`;
    this._document.body.appendChild(liveEl);
    return liveEl;
  }
  /**
   * Some browsers won't expose the accessibility node of the live announcer element if there is an
   * `aria-modal` and the live announcer is outside of it. This method works around the issue by
   * pointing the `aria-owns` of all modals to the live announcer element.
   */
  _exposeAnnouncerToModals(id) {
    const modals = this._document.querySelectorAll('body > .cdk-overlay-container [aria-modal="true"]');
    for (let i = 0; i < modals.length; i++) {
      const modal = modals[i];
      const ariaOwns = modal.getAttribute("aria-owns");
      if (!ariaOwns) {
        modal.setAttribute("aria-owns", id);
      } else if (ariaOwns.indexOf(id) === -1) {
        modal.setAttribute("aria-owns", ariaOwns + " " + id);
      }
    }
  }
};
_LiveAnnouncer.ɵfac = function LiveAnnouncer_Factory(t) {
  return new (t || _LiveAnnouncer)(ɵɵinject(LIVE_ANNOUNCER_ELEMENT_TOKEN, 8), ɵɵinject(NgZone), ɵɵinject(DOCUMENT), ɵɵinject(LIVE_ANNOUNCER_DEFAULT_OPTIONS, 8));
};
_LiveAnnouncer.ɵprov = ɵɵdefineInjectable({
  token: _LiveAnnouncer,
  factory: _LiveAnnouncer.ɵfac,
  providedIn: "root"
});
var LiveAnnouncer = _LiveAnnouncer;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(LiveAnnouncer, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: void 0,
    decorators: [{
      type: Optional
    }, {
      type: Inject,
      args: [LIVE_ANNOUNCER_ELEMENT_TOKEN]
    }]
  }, {
    type: NgZone
  }, {
    type: void 0,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }, {
    type: void 0,
    decorators: [{
      type: Optional
    }, {
      type: Inject,
      args: [LIVE_ANNOUNCER_DEFAULT_OPTIONS]
    }]
  }], null);
})();
var _CdkAriaLive = class _CdkAriaLive {
  /** The aria-live politeness level to use when announcing messages. */
  get politeness() {
    return this._politeness;
  }
  set politeness(value) {
    this._politeness = value === "off" || value === "assertive" ? value : "polite";
    if (this._politeness === "off") {
      if (this._subscription) {
        this._subscription.unsubscribe();
        this._subscription = null;
      }
    } else if (!this._subscription) {
      this._subscription = this._ngZone.runOutsideAngular(() => {
        return this._contentObserver.observe(this._elementRef).subscribe(() => {
          const elementText = this._elementRef.nativeElement.textContent;
          if (elementText !== this._previousAnnouncedText) {
            this._liveAnnouncer.announce(elementText, this._politeness, this.duration);
            this._previousAnnouncedText = elementText;
          }
        });
      });
    }
  }
  constructor(_elementRef, _liveAnnouncer, _contentObserver, _ngZone) {
    this._elementRef = _elementRef;
    this._liveAnnouncer = _liveAnnouncer;
    this._contentObserver = _contentObserver;
    this._ngZone = _ngZone;
    this._politeness = "polite";
  }
  ngOnDestroy() {
    if (this._subscription) {
      this._subscription.unsubscribe();
    }
  }
};
_CdkAriaLive.ɵfac = function CdkAriaLive_Factory(t) {
  return new (t || _CdkAriaLive)(ɵɵdirectiveInject(ElementRef), ɵɵdirectiveInject(LiveAnnouncer), ɵɵdirectiveInject(ContentObserver), ɵɵdirectiveInject(NgZone));
};
_CdkAriaLive.ɵdir = ɵɵdefineDirective({
  type: _CdkAriaLive,
  selectors: [["", "cdkAriaLive", ""]],
  inputs: {
    politeness: ["cdkAriaLive", "politeness"],
    duration: ["cdkAriaLiveDuration", "duration"]
  },
  exportAs: ["cdkAriaLive"]
});
var CdkAriaLive = _CdkAriaLive;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(CdkAriaLive, [{
    type: Directive,
    args: [{
      selector: "[cdkAriaLive]",
      exportAs: "cdkAriaLive"
    }]
  }], () => [{
    type: ElementRef
  }, {
    type: LiveAnnouncer
  }, {
    type: ContentObserver
  }, {
    type: NgZone
  }], {
    politeness: [{
      type: Input,
      args: ["cdkAriaLive"]
    }],
    duration: [{
      type: Input,
      args: ["cdkAriaLiveDuration"]
    }]
  });
})();
var FOCUS_MONITOR_DEFAULT_OPTIONS = new InjectionToken("cdk-focus-monitor-default-options");
var captureEventListenerOptions = normalizePassiveListenerOptions({
  passive: true,
  capture: true
});
var _FocusMonitor = class _FocusMonitor {
  constructor(_ngZone, _platform, _inputModalityDetector, document2, options) {
    this._ngZone = _ngZone;
    this._platform = _platform;
    this._inputModalityDetector = _inputModalityDetector;
    this._origin = null;
    this._windowFocused = false;
    this._originFromTouchInteraction = false;
    this._elementInfo = /* @__PURE__ */ new Map();
    this._monitoredElementCount = 0;
    this._rootNodeFocusListenerCount = /* @__PURE__ */ new Map();
    this._windowFocusListener = () => {
      this._windowFocused = true;
      this._windowFocusTimeoutId = window.setTimeout(() => this._windowFocused = false);
    };
    this._stopInputModalityDetector = new Subject();
    this._rootNodeFocusAndBlurListener = (event) => {
      const target = _getEventTarget(event);
      for (let element = target; element; element = element.parentElement) {
        if (event.type === "focus") {
          this._onFocus(event, element);
        } else {
          this._onBlur(event, element);
        }
      }
    };
    this._document = document2;
    this._detectionMode = options?.detectionMode || 0;
  }
  monitor(element, checkChildren = false) {
    const nativeElement = coerceElement(element);
    if (!this._platform.isBrowser || nativeElement.nodeType !== 1) {
      return of();
    }
    const rootNode = _getShadowRoot(nativeElement) || this._getDocument();
    const cachedInfo = this._elementInfo.get(nativeElement);
    if (cachedInfo) {
      if (checkChildren) {
        cachedInfo.checkChildren = true;
      }
      return cachedInfo.subject;
    }
    const info = {
      checkChildren,
      subject: new Subject(),
      rootNode
    };
    this._elementInfo.set(nativeElement, info);
    this._registerGlobalListeners(info);
    return info.subject;
  }
  stopMonitoring(element) {
    const nativeElement = coerceElement(element);
    const elementInfo = this._elementInfo.get(nativeElement);
    if (elementInfo) {
      elementInfo.subject.complete();
      this._setClasses(nativeElement);
      this._elementInfo.delete(nativeElement);
      this._removeGlobalListeners(elementInfo);
    }
  }
  focusVia(element, origin, options) {
    const nativeElement = coerceElement(element);
    const focusedElement = this._getDocument().activeElement;
    if (nativeElement === focusedElement) {
      this._getClosestElementsInfo(nativeElement).forEach(([currentElement, info]) => this._originChanged(currentElement, origin, info));
    } else {
      this._setOrigin(origin);
      if (typeof nativeElement.focus === "function") {
        nativeElement.focus(options);
      }
    }
  }
  ngOnDestroy() {
    this._elementInfo.forEach((_info, element) => this.stopMonitoring(element));
  }
  /** Access injected document if available or fallback to global document reference */
  _getDocument() {
    return this._document || document;
  }
  /** Use defaultView of injected document if available or fallback to global window reference */
  _getWindow() {
    const doc = this._getDocument();
    return doc.defaultView || window;
  }
  _getFocusOrigin(focusEventTarget) {
    if (this._origin) {
      if (this._originFromTouchInteraction) {
        return this._shouldBeAttributedToTouch(focusEventTarget) ? "touch" : "program";
      } else {
        return this._origin;
      }
    }
    if (this._windowFocused && this._lastFocusOrigin) {
      return this._lastFocusOrigin;
    }
    if (focusEventTarget && this._isLastInteractionFromInputLabel(focusEventTarget)) {
      return "mouse";
    }
    return "program";
  }
  /**
   * Returns whether the focus event should be attributed to touch. Recall that in IMMEDIATE mode, a
   * touch origin isn't immediately reset at the next tick (see _setOrigin). This means that when we
   * handle a focus event following a touch interaction, we need to determine whether (1) the focus
   * event was directly caused by the touch interaction or (2) the focus event was caused by a
   * subsequent programmatic focus call triggered by the touch interaction.
   * @param focusEventTarget The target of the focus event under examination.
   */
  _shouldBeAttributedToTouch(focusEventTarget) {
    return this._detectionMode === 1 || !!focusEventTarget?.contains(this._inputModalityDetector._mostRecentTarget);
  }
  /**
   * Sets the focus classes on the element based on the given focus origin.
   * @param element The element to update the classes on.
   * @param origin The focus origin.
   */
  _setClasses(element, origin) {
    element.classList.toggle("cdk-focused", !!origin);
    element.classList.toggle("cdk-touch-focused", origin === "touch");
    element.classList.toggle("cdk-keyboard-focused", origin === "keyboard");
    element.classList.toggle("cdk-mouse-focused", origin === "mouse");
    element.classList.toggle("cdk-program-focused", origin === "program");
  }
  /**
   * Updates the focus origin. If we're using immediate detection mode, we schedule an async
   * function to clear the origin at the end of a timeout. The duration of the timeout depends on
   * the origin being set.
   * @param origin The origin to set.
   * @param isFromInteraction Whether we are setting the origin from an interaction event.
   */
  _setOrigin(origin, isFromInteraction = false) {
    this._ngZone.runOutsideAngular(() => {
      this._origin = origin;
      this._originFromTouchInteraction = origin === "touch" && isFromInteraction;
      if (this._detectionMode === 0) {
        clearTimeout(this._originTimeoutId);
        const ms = this._originFromTouchInteraction ? TOUCH_BUFFER_MS : 1;
        this._originTimeoutId = setTimeout(() => this._origin = null, ms);
      }
    });
  }
  /**
   * Handles focus events on a registered element.
   * @param event The focus event.
   * @param element The monitored element.
   */
  _onFocus(event, element) {
    const elementInfo = this._elementInfo.get(element);
    const focusEventTarget = _getEventTarget(event);
    if (!elementInfo || !elementInfo.checkChildren && element !== focusEventTarget) {
      return;
    }
    this._originChanged(element, this._getFocusOrigin(focusEventTarget), elementInfo);
  }
  /**
   * Handles blur events on a registered element.
   * @param event The blur event.
   * @param element The monitored element.
   */
  _onBlur(event, element) {
    const elementInfo = this._elementInfo.get(element);
    if (!elementInfo || elementInfo.checkChildren && event.relatedTarget instanceof Node && element.contains(event.relatedTarget)) {
      return;
    }
    this._setClasses(element);
    this._emitOrigin(elementInfo, null);
  }
  _emitOrigin(info, origin) {
    if (info.subject.observers.length) {
      this._ngZone.run(() => info.subject.next(origin));
    }
  }
  _registerGlobalListeners(elementInfo) {
    if (!this._platform.isBrowser) {
      return;
    }
    const rootNode = elementInfo.rootNode;
    const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode) || 0;
    if (!rootNodeFocusListeners) {
      this._ngZone.runOutsideAngular(() => {
        rootNode.addEventListener("focus", this._rootNodeFocusAndBlurListener, captureEventListenerOptions);
        rootNode.addEventListener("blur", this._rootNodeFocusAndBlurListener, captureEventListenerOptions);
      });
    }
    this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners + 1);
    if (++this._monitoredElementCount === 1) {
      this._ngZone.runOutsideAngular(() => {
        const window2 = this._getWindow();
        window2.addEventListener("focus", this._windowFocusListener);
      });
      this._inputModalityDetector.modalityDetected.pipe(takeUntil(this._stopInputModalityDetector)).subscribe((modality) => {
        this._setOrigin(
          modality,
          true
          /* isFromInteraction */
        );
      });
    }
  }
  _removeGlobalListeners(elementInfo) {
    const rootNode = elementInfo.rootNode;
    if (this._rootNodeFocusListenerCount.has(rootNode)) {
      const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode);
      if (rootNodeFocusListeners > 1) {
        this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners - 1);
      } else {
        rootNode.removeEventListener("focus", this._rootNodeFocusAndBlurListener, captureEventListenerOptions);
        rootNode.removeEventListener("blur", this._rootNodeFocusAndBlurListener, captureEventListenerOptions);
        this._rootNodeFocusListenerCount.delete(rootNode);
      }
    }
    if (!--this._monitoredElementCount) {
      const window2 = this._getWindow();
      window2.removeEventListener("focus", this._windowFocusListener);
      this._stopInputModalityDetector.next();
      clearTimeout(this._windowFocusTimeoutId);
      clearTimeout(this._originTimeoutId);
    }
  }
  /** Updates all the state on an element once its focus origin has changed. */
  _originChanged(element, origin, elementInfo) {
    this._setClasses(element, origin);
    this._emitOrigin(elementInfo, origin);
    this._lastFocusOrigin = origin;
  }
  /**
   * Collects the `MonitoredElementInfo` of a particular element and
   * all of its ancestors that have enabled `checkChildren`.
   * @param element Element from which to start the search.
   */
  _getClosestElementsInfo(element) {
    const results = [];
    this._elementInfo.forEach((info, currentElement) => {
      if (currentElement === element || info.checkChildren && currentElement.contains(element)) {
        results.push([currentElement, info]);
      }
    });
    return results;
  }
  /**
   * Returns whether an interaction is likely to have come from the user clicking the `label` of
   * an `input` or `textarea` in order to focus it.
   * @param focusEventTarget Target currently receiving focus.
   */
  _isLastInteractionFromInputLabel(focusEventTarget) {
    const {
      _mostRecentTarget: mostRecentTarget,
      mostRecentModality
    } = this._inputModalityDetector;
    if (mostRecentModality !== "mouse" || !mostRecentTarget || mostRecentTarget === focusEventTarget || focusEventTarget.nodeName !== "INPUT" && focusEventTarget.nodeName !== "TEXTAREA" || focusEventTarget.disabled) {
      return false;
    }
    const labels = focusEventTarget.labels;
    if (labels) {
      for (let i = 0; i < labels.length; i++) {
        if (labels[i].contains(mostRecentTarget)) {
          return true;
        }
      }
    }
    return false;
  }
};
_FocusMonitor.ɵfac = function FocusMonitor_Factory(t) {
  return new (t || _FocusMonitor)(ɵɵinject(NgZone), ɵɵinject(Platform), ɵɵinject(InputModalityDetector), ɵɵinject(DOCUMENT, 8), ɵɵinject(FOCUS_MONITOR_DEFAULT_OPTIONS, 8));
};
_FocusMonitor.ɵprov = ɵɵdefineInjectable({
  token: _FocusMonitor,
  factory: _FocusMonitor.ɵfac,
  providedIn: "root"
});
var FocusMonitor = _FocusMonitor;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(FocusMonitor, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: NgZone
  }, {
    type: Platform
  }, {
    type: InputModalityDetector
  }, {
    type: void 0,
    decorators: [{
      type: Optional
    }, {
      type: Inject,
      args: [DOCUMENT]
    }]
  }, {
    type: void 0,
    decorators: [{
      type: Optional
    }, {
      type: Inject,
      args: [FOCUS_MONITOR_DEFAULT_OPTIONS]
    }]
  }], null);
})();
var _CdkMonitorFocus = class _CdkMonitorFocus {
  constructor(_elementRef, _focusMonitor) {
    this._elementRef = _elementRef;
    this._focusMonitor = _focusMonitor;
    this._focusOrigin = null;
    this.cdkFocusChange = new EventEmitter();
  }
  get focusOrigin() {
    return this._focusOrigin;
  }
  ngAfterViewInit() {
    const element = this._elementRef.nativeElement;
    this._monitorSubscription = this._focusMonitor.monitor(element, element.nodeType === 1 && element.hasAttribute("cdkMonitorSubtreeFocus")).subscribe((origin) => {
      this._focusOrigin = origin;
      this.cdkFocusChange.emit(origin);
    });
  }
  ngOnDestroy() {
    this._focusMonitor.stopMonitoring(this._elementRef);
    if (this._monitorSubscription) {
      this._monitorSubscription.unsubscribe();
    }
  }
};
_CdkMonitorFocus.ɵfac = function CdkMonitorFocus_Factory(t) {
  return new (t || _CdkMonitorFocus)(ɵɵdirectiveInject(ElementRef), ɵɵdirectiveInject(FocusMonitor));
};
_CdkMonitorFocus.ɵdir = ɵɵdefineDirective({
  type: _CdkMonitorFocus,
  selectors: [["", "cdkMonitorElementFocus", ""], ["", "cdkMonitorSubtreeFocus", ""]],
  outputs: {
    cdkFocusChange: "cdkFocusChange"
  },
  exportAs: ["cdkMonitorFocus"]
});
var CdkMonitorFocus = _CdkMonitorFocus;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(CdkMonitorFocus, [{
    type: Directive,
    args: [{
      selector: "[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]",
      exportAs: "cdkMonitorFocus"
    }]
  }], () => [{
    type: ElementRef
  }, {
    type: FocusMonitor
  }], {
    cdkFocusChange: [{
      type: Output
    }]
  });
})();
var BLACK_ON_WHITE_CSS_CLASS = "cdk-high-contrast-black-on-white";
var WHITE_ON_BLACK_CSS_CLASS = "cdk-high-contrast-white-on-black";
var HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS = "cdk-high-contrast-active";
var _HighContrastModeDetector = class _HighContrastModeDetector {
  constructor(_platform, document2) {
    this._platform = _platform;
    this._document = document2;
    this._breakpointSubscription = inject(BreakpointObserver).observe("(forced-colors: active)").subscribe(() => {
      if (this._hasCheckedHighContrastMode) {
        this._hasCheckedHighContrastMode = false;
        this._applyBodyHighContrastModeCssClasses();
      }
    });
  }
  /** Gets the current high-contrast-mode for the page. */
  getHighContrastMode() {
    if (!this._platform.isBrowser) {
      return 0;
    }
    const testElement = this._document.createElement("div");
    testElement.style.backgroundColor = "rgb(1,2,3)";
    testElement.style.position = "absolute";
    this._document.body.appendChild(testElement);
    const documentWindow = this._document.defaultView || window;
    const computedStyle = documentWindow && documentWindow.getComputedStyle ? documentWindow.getComputedStyle(testElement) : null;
    const computedColor = (computedStyle && computedStyle.backgroundColor || "").replace(/ /g, "");
    testElement.remove();
    switch (computedColor) {
      case "rgb(0,0,0)":
      case "rgb(45,50,54)":
      case "rgb(32,32,32)":
        return 2;
      case "rgb(255,255,255)":
      case "rgb(255,250,239)":
        return 1;
    }
    return 0;
  }
  ngOnDestroy() {
    this._breakpointSubscription.unsubscribe();
  }
  /** Applies CSS classes indicating high-contrast mode to document body (browser-only). */
  _applyBodyHighContrastModeCssClasses() {
    if (!this._hasCheckedHighContrastMode && this._platform.isBrowser && this._document.body) {
      const bodyClasses = this._document.body.classList;
      bodyClasses.remove(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, BLACK_ON_WHITE_CSS_CLASS, WHITE_ON_BLACK_CSS_CLASS);
      this._hasCheckedHighContrastMode = true;
      const mode = this.getHighContrastMode();
      if (mode === 1) {
        bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, BLACK_ON_WHITE_CSS_CLASS);
      } else if (mode === 2) {
        bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, WHITE_ON_BLACK_CSS_CLASS);
      }
    }
  }
};
_HighContrastModeDetector.ɵfac = function HighContrastModeDetector_Factory(t) {
  return new (t || _HighContrastModeDetector)(ɵɵinject(Platform), ɵɵinject(DOCUMENT));
};
_HighContrastModeDetector.ɵprov = ɵɵdefineInjectable({
  token: _HighContrastModeDetector,
  factory: _HighContrastModeDetector.ɵfac,
  providedIn: "root"
});
var HighContrastModeDetector = _HighContrastModeDetector;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(HighContrastModeDetector, [{
    type: Injectable,
    args: [{
      providedIn: "root"
    }]
  }], () => [{
    type: Platform
  }, {
    type: void 0,
    decorators: [{
      type: Inject,
      args: [DOCUMENT]
    }]
  }], null);
})();
var _A11yModule = class _A11yModule {
  constructor(highContrastModeDetector) {
    highContrastModeDetector._applyBodyHighContrastModeCssClasses();
  }
};
_A11yModule.ɵfac = function A11yModule_Factory(t) {
  return new (t || _A11yModule)(ɵɵinject(HighContrastModeDetector));
};
_A11yModule.ɵmod = ɵɵdefineNgModule({
  type: _A11yModule,
  declarations: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],
  imports: [ObserversModule],
  exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus]
});
_A11yModule.ɵinj = ɵɵdefineInjector({
  imports: [ObserversModule]
});
var A11yModule = _A11yModule;
(() => {
  (typeof ngDevMode === "undefined" || ngDevMode) && setClassMetadata(A11yModule, [{
    type: NgModule,
    args: [{
      imports: [ObserversModule],
      declarations: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],
      exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus]
    }]
  }], () => [{
    type: HighContrastModeDetector
  }], null);
})();

export {
  FocusMonitor
};
//# sourceMappingURL=chunk-C2DNBB57.js.map