app/node_modules/@angular/material/fesm2022/expansion.mjs

import * as i0 from '@angular/core';
import { InjectionToken, inject, TemplateRef, Directive, ViewContainerRef, ANIMATION_MODULE_TYPE, NgZone, ElementRef, Renderer2, EventEmitter, booleanAttribute, Component, ViewEncapsulation, ChangeDetectionStrategy, Input, Output, ContentChild, ViewChild, ChangeDetectorRef, HostAttributeToken, numberAttribute, QueryList, ContentChildren, NgModule } from '@angular/core';
import { CdkAccordionItem, CdkAccordion, CdkAccordionModule } from '@angular/cdk/accordion';
import { TemplatePortal, CdkPortalOutlet, PortalModule } from '@angular/cdk/portal';
import { _IdGenerator, FocusMonitor, FocusKeyManager } from '@angular/cdk/a11y';
import { startWith, filter, take } from 'rxjs/operators';
import { ENTER, hasModifierKey, SPACE } from '@angular/cdk/keycodes';
import { Subject, Subscription, EMPTY, merge } from 'rxjs';
import { UniqueSelectionDispatcher } from '@angular/cdk/collections';
import { DOCUMENT } from '@angular/common';
import { _CdkPrivateStyleLoader } from '@angular/cdk/private';
import { _ as _StructuralStylesLoader } from './structural-styles-BQUT6wsL.mjs';
import { M as MatCommonModule } from './common-module-WayjW0Pb.mjs';
import '@angular/cdk/bidi';

/**
 * Token used to provide a `MatAccordion` to `MatExpansionPanel`.
 * Used primarily to avoid circular imports between `MatAccordion` and `MatExpansionPanel`.
 */
const MAT_ACCORDION = new InjectionToken('MAT_ACCORDION');

/**
 * Token used to provide a `MatExpansionPanel` to `MatExpansionPanelContent`.
 * Used to avoid circular imports between `MatExpansionPanel` and `MatExpansionPanelContent`.
 */
const MAT_EXPANSION_PANEL = new InjectionToken('MAT_EXPANSION_PANEL');

/**
 * Expansion panel content that will be rendered lazily
 * after the panel is opened for the first time.
 */
class MatExpansionPanelContent {
    _template = inject(TemplateRef);
    _expansionPanel = inject(MAT_EXPANSION_PANEL, { optional: true });
    constructor() { }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelContent, deps: [], target: i0.ɵɵFactoryTarget.Directive });
    static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "19.2.6", type: MatExpansionPanelContent, isStandalone: true, selector: "ng-template[matExpansionPanelContent]", ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelContent, decorators: [{
            type: Directive,
            args: [{
                    selector: 'ng-template[matExpansionPanelContent]',
                }]
        }], ctorParameters: () => [] });

/**
 * Injection token that can be used to configure the default
 * options for the expansion panel component.
 */
const MAT_EXPANSION_PANEL_DEFAULT_OPTIONS = new InjectionToken('MAT_EXPANSION_PANEL_DEFAULT_OPTIONS');
/**
 * This component can be used as a single element to show expandable content, or as one of
 * multiple children of an element with the MatAccordion directive attached.
 */
class MatExpansionPanel extends CdkAccordionItem {
    _viewContainerRef = inject(ViewContainerRef);
    _animationsDisabled = inject(ANIMATION_MODULE_TYPE, { optional: true }) === 'NoopAnimations';
    _document = inject(DOCUMENT);
    _ngZone = inject(NgZone);
    _elementRef = inject(ElementRef);
    _renderer = inject(Renderer2);
    _cleanupTransitionEnd;
    /** Whether the toggle indicator should be hidden. */
    get hideToggle() {
        return this._hideToggle || (this.accordion && this.accordion.hideToggle);
    }
    set hideToggle(value) {
        this._hideToggle = value;
    }
    _hideToggle = false;
    /** The position of the expansion indicator. */
    get togglePosition() {
        return this._togglePosition || (this.accordion && this.accordion.togglePosition);
    }
    set togglePosition(value) {
        this._togglePosition = value;
    }
    _togglePosition;
    /** An event emitted after the body's expansion animation happens. */
    afterExpand = new EventEmitter();
    /** An event emitted after the body's collapse animation happens. */
    afterCollapse = new EventEmitter();
    /** Stream that emits for changes in `@Input` properties. */
    _inputChanges = new Subject();
    /** Optionally defined accordion the expansion panel belongs to. */
    accordion = inject(MAT_ACCORDION, { optional: true, skipSelf: true });
    /** Content that will be rendered lazily. */
    _lazyContent;
    /** Element containing the panel's user-provided content. */
    _body;
    /** Element wrapping the panel body. */
    _bodyWrapper;
    /** Portal holding the user's content. */
    _portal;
    /** ID for the associated header element. Used for a11y labelling. */
    _headerId = inject(_IdGenerator).getId('mat-expansion-panel-header-');
    constructor() {
        super();
        const defaultOptions = inject(MAT_EXPANSION_PANEL_DEFAULT_OPTIONS, { optional: true });
        this._expansionDispatcher = inject(UniqueSelectionDispatcher);
        if (defaultOptions) {
            this.hideToggle = defaultOptions.hideToggle;
        }
    }
    /** Determines whether the expansion panel should have spacing between it and its siblings. */
    _hasSpacing() {
        if (this.accordion) {
            return this.expanded && this.accordion.displayMode === 'default';
        }
        return false;
    }
    /** Gets the expanded state string. */
    _getExpandedState() {
        return this.expanded ? 'expanded' : 'collapsed';
    }
    /** Toggles the expanded state of the expansion panel. */
    toggle() {
        this.expanded = !this.expanded;
    }
    /** Sets the expanded state of the expansion panel to false. */
    close() {
        this.expanded = false;
    }
    /** Sets the expanded state of the expansion panel to true. */
    open() {
        this.expanded = true;
    }
    ngAfterContentInit() {
        if (this._lazyContent && this._lazyContent._expansionPanel === this) {
            // Render the content as soon as the panel becomes open.
            this.opened
                .pipe(startWith(null), filter(() => this.expanded && !this._portal), take(1))
                .subscribe(() => {
                this._portal = new TemplatePortal(this._lazyContent._template, this._viewContainerRef);
            });
        }
        this._setupAnimationEvents();
    }
    ngOnChanges(changes) {
        this._inputChanges.next(changes);
    }
    ngOnDestroy() {
        super.ngOnDestroy();
        this._cleanupTransitionEnd?.();
        this._inputChanges.complete();
    }
    /** Checks whether the expansion panel's content contains the currently-focused element. */
    _containsFocus() {
        if (this._body) {
            const focusedElement = this._document.activeElement;
            const bodyElement = this._body.nativeElement;
            return focusedElement === bodyElement || bodyElement.contains(focusedElement);
        }
        return false;
    }
    _transitionEndListener = ({ target, propertyName }) => {
        if (target === this._bodyWrapper?.nativeElement && propertyName === 'grid-template-rows') {
            this._ngZone.run(() => {
                if (this.expanded) {
                    this.afterExpand.emit();
                }
                else {
                    this.afterCollapse.emit();
                }
            });
        }
    };
    _setupAnimationEvents() {
        // This method is defined separately, because we need to
        // disable this logic in some internal components.
        this._ngZone.runOutsideAngular(() => {
            if (this._animationsDisabled) {
                this.opened.subscribe(() => this._ngZone.run(() => this.afterExpand.emit()));
                this.closed.subscribe(() => this._ngZone.run(() => this.afterCollapse.emit()));
            }
            else {
                setTimeout(() => {
                    const element = this._elementRef.nativeElement;
                    this._cleanupTransitionEnd = this._renderer.listen(element, 'transitionend', this._transitionEndListener);
                    element.classList.add('mat-expansion-panel-animations-enabled');
                }, 200);
            }
        });
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanel, deps: [], target: i0.ɵɵFactoryTarget.Component });
    static ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "16.1.0", version: "19.2.6", type: MatExpansionPanel, isStandalone: true, selector: "mat-expansion-panel", inputs: { hideToggle: ["hideToggle", "hideToggle", booleanAttribute], togglePosition: "togglePosition" }, outputs: { afterExpand: "afterExpand", afterCollapse: "afterCollapse" }, host: { properties: { "class.mat-expanded": "expanded", "class.mat-expansion-panel-spacing": "_hasSpacing()" }, classAttribute: "mat-expansion-panel" }, providers: [
            // Provide MatAccordion as undefined to prevent nested expansion panels from registering
            // to the same accordion.
            { provide: MAT_ACCORDION, useValue: undefined },
            { provide: MAT_EXPANSION_PANEL, useExisting: MatExpansionPanel },
        ], queries: [{ propertyName: "_lazyContent", first: true, predicate: MatExpansionPanelContent, descendants: true }], viewQueries: [{ propertyName: "_body", first: true, predicate: ["body"], descendants: true }, { propertyName: "_bodyWrapper", first: true, predicate: ["bodyWrapper"], descendants: true }], exportAs: ["matExpansionPanel"], usesInheritance: true, usesOnChanges: true, ngImport: i0, template: "<ng-content select=\"mat-expansion-panel-header\"></ng-content>\n<div class=\"mat-expansion-panel-content-wrapper\" [attr.inert]=\"expanded ? null : ''\" #bodyWrapper>\n  <div class=\"mat-expansion-panel-content\"\n       role=\"region\"\n       [attr.aria-labelledby]=\"_headerId\"\n       [id]=\"id\"\n       #body>\n    <div class=\"mat-expansion-panel-body\">\n      <ng-content></ng-content>\n      <ng-template [cdkPortalOutlet]=\"_portal\"></ng-template>\n    </div>\n    <ng-content select=\"mat-action-row\"></ng-content>\n  </div>\n</div>\n", styles: [".mat-expansion-panel{box-sizing:content-box;display:block;margin:0;overflow:hidden;position:relative;background:var(--mat-expansion-container-background-color, var(--mat-sys-surface));color:var(--mat-expansion-container-text-color, var(--mat-sys-on-surface));border-radius:var(--mat-expansion-container-shape, 12px)}.mat-expansion-panel.mat-expansion-panel-animations-enabled{transition:margin 225ms cubic-bezier(0.4, 0, 0.2, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel:not([class*=mat-elevation-z]){box-shadow:0px 3px 1px -2px rgba(0, 0, 0, 0.2), 0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)}.mat-accordion .mat-expansion-panel:not(.mat-expanded),.mat-accordion .mat-expansion-panel:not(.mat-expansion-panel-spacing){border-radius:0}.mat-accordion .mat-expansion-panel:first-of-type{border-top-right-radius:var(--mat-expansion-container-shape, 12px);border-top-left-radius:var(--mat-expansion-container-shape, 12px)}.mat-accordion .mat-expansion-panel:last-of-type{border-bottom-right-radius:var(--mat-expansion-container-shape, 12px);border-bottom-left-radius:var(--mat-expansion-container-shape, 12px)}@media(forced-colors: active){.mat-expansion-panel{outline:solid 1px}}.mat-expansion-panel-content-wrapper{display:grid;grid-template-rows:0fr;grid-template-columns:100%}.mat-expansion-panel-animations-enabled .mat-expansion-panel-content-wrapper{transition:grid-template-rows 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel.mat-expanded>.mat-expansion-panel-content-wrapper{grid-template-rows:1fr}@supports not (grid-template-rows: 0fr){.mat-expansion-panel-content-wrapper{height:0}.mat-expansion-panel.mat-expanded>.mat-expansion-panel-content-wrapper{height:auto}}.mat-expansion-panel-content{display:flex;flex-direction:column;overflow:visible;min-height:0;visibility:hidden;font-family:var(--mat-expansion-container-text-font, var(--mat-sys-body-large-font));font-size:var(--mat-expansion-container-text-size, var(--mat-sys-body-large-size));font-weight:var(--mat-expansion-container-text-weight, var(--mat-sys-body-large-weight));line-height:var(--mat-expansion-container-text-line-height, var(--mat-sys-body-large-line-height));letter-spacing:var(--mat-expansion-container-text-tracking, var(--mat-sys-body-large-tracking))}.mat-expansion-panel-animations-enabled .mat-expansion-panel-content{transition:visibility 190ms linear}.mat-expansion-panel.mat-expanded>.mat-expansion-panel-content-wrapper>.mat-expansion-panel-content{visibility:visible}.mat-expansion-panel-body{padding:0 24px 16px}.mat-expansion-panel-spacing{margin:16px 0}.mat-accordion>.mat-expansion-panel-spacing:first-child,.mat-accordion>*:first-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-top:0}.mat-accordion>.mat-expansion-panel-spacing:last-child,.mat-accordion>*:last-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-bottom:0}.mat-action-row{border-top-style:solid;border-top-width:1px;display:flex;flex-direction:row;justify-content:flex-end;padding:16px 8px 16px 24px;border-top-color:var(--mat-expansion-actions-divider-color, var(--mat-sys-outline))}.mat-action-row .mat-button-base,.mat-action-row .mat-mdc-button-base{margin-left:8px}[dir=rtl] .mat-action-row .mat-button-base,[dir=rtl] .mat-action-row .mat-mdc-button-base{margin-left:0;margin-right:8px}\n"], dependencies: [{ kind: "directive", type: CdkPortalOutlet, selector: "[cdkPortalOutlet]", inputs: ["cdkPortalOutlet"], outputs: ["attached"], exportAs: ["cdkPortalOutlet"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanel, decorators: [{
            type: Component,
            args: [{ selector: 'mat-expansion-panel', exportAs: 'matExpansionPanel', encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, providers: [
                        // Provide MatAccordion as undefined to prevent nested expansion panels from registering
                        // to the same accordion.
                        { provide: MAT_ACCORDION, useValue: undefined },
                        { provide: MAT_EXPANSION_PANEL, useExisting: MatExpansionPanel },
                    ], host: {
                        'class': 'mat-expansion-panel',
                        '[class.mat-expanded]': 'expanded',
                        '[class.mat-expansion-panel-spacing]': '_hasSpacing()',
                    }, imports: [CdkPortalOutlet], template: "<ng-content select=\"mat-expansion-panel-header\"></ng-content>\n<div class=\"mat-expansion-panel-content-wrapper\" [attr.inert]=\"expanded ? null : ''\" #bodyWrapper>\n  <div class=\"mat-expansion-panel-content\"\n       role=\"region\"\n       [attr.aria-labelledby]=\"_headerId\"\n       [id]=\"id\"\n       #body>\n    <div class=\"mat-expansion-panel-body\">\n      <ng-content></ng-content>\n      <ng-template [cdkPortalOutlet]=\"_portal\"></ng-template>\n    </div>\n    <ng-content select=\"mat-action-row\"></ng-content>\n  </div>\n</div>\n", styles: [".mat-expansion-panel{box-sizing:content-box;display:block;margin:0;overflow:hidden;position:relative;background:var(--mat-expansion-container-background-color, var(--mat-sys-surface));color:var(--mat-expansion-container-text-color, var(--mat-sys-on-surface));border-radius:var(--mat-expansion-container-shape, 12px)}.mat-expansion-panel.mat-expansion-panel-animations-enabled{transition:margin 225ms cubic-bezier(0.4, 0, 0.2, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel:not([class*=mat-elevation-z]){box-shadow:0px 3px 1px -2px rgba(0, 0, 0, 0.2), 0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)}.mat-accordion .mat-expansion-panel:not(.mat-expanded),.mat-accordion .mat-expansion-panel:not(.mat-expansion-panel-spacing){border-radius:0}.mat-accordion .mat-expansion-panel:first-of-type{border-top-right-radius:var(--mat-expansion-container-shape, 12px);border-top-left-radius:var(--mat-expansion-container-shape, 12px)}.mat-accordion .mat-expansion-panel:last-of-type{border-bottom-right-radius:var(--mat-expansion-container-shape, 12px);border-bottom-left-radius:var(--mat-expansion-container-shape, 12px)}@media(forced-colors: active){.mat-expansion-panel{outline:solid 1px}}.mat-expansion-panel-content-wrapper{display:grid;grid-template-rows:0fr;grid-template-columns:100%}.mat-expansion-panel-animations-enabled .mat-expansion-panel-content-wrapper{transition:grid-template-rows 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel.mat-expanded>.mat-expansion-panel-content-wrapper{grid-template-rows:1fr}@supports not (grid-template-rows: 0fr){.mat-expansion-panel-content-wrapper{height:0}.mat-expansion-panel.mat-expanded>.mat-expansion-panel-content-wrapper{height:auto}}.mat-expansion-panel-content{display:flex;flex-direction:column;overflow:visible;min-height:0;visibility:hidden;font-family:var(--mat-expansion-container-text-font, var(--mat-sys-body-large-font));font-size:var(--mat-expansion-container-text-size, var(--mat-sys-body-large-size));font-weight:var(--mat-expansion-container-text-weight, var(--mat-sys-body-large-weight));line-height:var(--mat-expansion-container-text-line-height, var(--mat-sys-body-large-line-height));letter-spacing:var(--mat-expansion-container-text-tracking, var(--mat-sys-body-large-tracking))}.mat-expansion-panel-animations-enabled .mat-expansion-panel-content{transition:visibility 190ms linear}.mat-expansion-panel.mat-expanded>.mat-expansion-panel-content-wrapper>.mat-expansion-panel-content{visibility:visible}.mat-expansion-panel-body{padding:0 24px 16px}.mat-expansion-panel-spacing{margin:16px 0}.mat-accordion>.mat-expansion-panel-spacing:first-child,.mat-accordion>*:first-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-top:0}.mat-accordion>.mat-expansion-panel-spacing:last-child,.mat-accordion>*:last-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-bottom:0}.mat-action-row{border-top-style:solid;border-top-width:1px;display:flex;flex-direction:row;justify-content:flex-end;padding:16px 8px 16px 24px;border-top-color:var(--mat-expansion-actions-divider-color, var(--mat-sys-outline))}.mat-action-row .mat-button-base,.mat-action-row .mat-mdc-button-base{margin-left:8px}[dir=rtl] .mat-action-row .mat-button-base,[dir=rtl] .mat-action-row .mat-mdc-button-base{margin-left:0;margin-right:8px}\n"] }]
        }], ctorParameters: () => [], propDecorators: { hideToggle: [{
                type: Input,
                args: [{ transform: booleanAttribute }]
            }], togglePosition: [{
                type: Input
            }], afterExpand: [{
                type: Output
            }], afterCollapse: [{
                type: Output
            }], _lazyContent: [{
                type: ContentChild,
                args: [MatExpansionPanelContent]
            }], _body: [{
                type: ViewChild,
                args: ['body']
            }], _bodyWrapper: [{
                type: ViewChild,
                args: ['bodyWrapper']
            }] } });
/**
 * Actions of a `<mat-expansion-panel>`.
 */
class MatExpansionPanelActionRow {
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelActionRow, deps: [], target: i0.ɵɵFactoryTarget.Directive });
    static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "19.2.6", type: MatExpansionPanelActionRow, isStandalone: true, selector: "mat-action-row", host: { classAttribute: "mat-action-row" }, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelActionRow, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-action-row',
                    host: {
                        class: 'mat-action-row',
                    },
                }]
        }] });

/**
 * Header element of a `<mat-expansion-panel>`.
 */
class MatExpansionPanelHeader {
    panel = inject(MatExpansionPanel, { host: true });
    _element = inject(ElementRef);
    _focusMonitor = inject(FocusMonitor);
    _changeDetectorRef = inject(ChangeDetectorRef);
    _parentChangeSubscription = Subscription.EMPTY;
    constructor() {
        inject(_CdkPrivateStyleLoader).load(_StructuralStylesLoader);
        const panel = this.panel;
        const defaultOptions = inject(MAT_EXPANSION_PANEL_DEFAULT_OPTIONS, { optional: true });
        const tabIndex = inject(new HostAttributeToken('tabindex'), { optional: true });
        const accordionHideToggleChange = panel.accordion
            ? panel.accordion._stateChanges.pipe(filter(changes => !!(changes['hideToggle'] || changes['togglePosition'])))
            : EMPTY;
        this.tabIndex = parseInt(tabIndex || '') || 0;
        // Since the toggle state depends on an @Input on the panel, we
        // need to subscribe and trigger change detection manually.
        this._parentChangeSubscription = merge(panel.opened, panel.closed, accordionHideToggleChange, panel._inputChanges.pipe(filter(changes => {
            return !!(changes['hideToggle'] || changes['disabled'] || changes['togglePosition']);
        }))).subscribe(() => this._changeDetectorRef.markForCheck());
        // Avoids focus being lost if the panel contained the focused element and was closed.
        panel.closed
            .pipe(filter(() => panel._containsFocus()))
            .subscribe(() => this._focusMonitor.focusVia(this._element, 'program'));
        if (defaultOptions) {
            this.expandedHeight = defaultOptions.expandedHeight;
            this.collapsedHeight = defaultOptions.collapsedHeight;
        }
    }
    /** Height of the header while the panel is expanded. */
    expandedHeight;
    /** Height of the header while the panel is collapsed. */
    collapsedHeight;
    /** Tab index of the header. */
    tabIndex = 0;
    /**
     * Whether the associated panel is disabled. Implemented as a part of `FocusableOption`.
     * @docs-private
     */
    get disabled() {
        return this.panel.disabled;
    }
    /** Toggles the expanded state of the panel. */
    _toggle() {
        if (!this.disabled) {
            this.panel.toggle();
        }
    }
    /** Gets whether the panel is expanded. */
    _isExpanded() {
        return this.panel.expanded;
    }
    /** Gets the expanded state string of the panel. */
    _getExpandedState() {
        return this.panel._getExpandedState();
    }
    /** Gets the panel id. */
    _getPanelId() {
        return this.panel.id;
    }
    /** Gets the toggle position for the header. */
    _getTogglePosition() {
        return this.panel.togglePosition;
    }
    /** Gets whether the expand indicator should be shown. */
    _showToggle() {
        return !this.panel.hideToggle && !this.panel.disabled;
    }
    /**
     * Gets the current height of the header. Null if no custom height has been
     * specified, and if the default height from the stylesheet should be used.
     */
    _getHeaderHeight() {
        const isExpanded = this._isExpanded();
        if (isExpanded && this.expandedHeight) {
            return this.expandedHeight;
        }
        else if (!isExpanded && this.collapsedHeight) {
            return this.collapsedHeight;
        }
        return null;
    }
    /** Handle keydown event calling to toggle() if appropriate. */
    _keydown(event) {
        switch (event.keyCode) {
            // Toggle for space and enter keys.
            case SPACE:
            case ENTER:
                if (!hasModifierKey(event)) {
                    event.preventDefault();
                    this._toggle();
                }
                break;
            default:
                if (this.panel.accordion) {
                    this.panel.accordion._handleHeaderKeydown(event);
                }
                return;
        }
    }
    /**
     * Focuses the panel header. Implemented as a part of `FocusableOption`.
     * @param origin Origin of the action that triggered the focus.
     * @docs-private
     */
    focus(origin, options) {
        if (origin) {
            this._focusMonitor.focusVia(this._element, origin, options);
        }
        else {
            this._element.nativeElement.focus(options);
        }
    }
    ngAfterViewInit() {
        this._focusMonitor.monitor(this._element).subscribe(origin => {
            if (origin && this.panel.accordion) {
                this.panel.accordion._handleHeaderFocus(this);
            }
        });
    }
    ngOnDestroy() {
        this._parentChangeSubscription.unsubscribe();
        this._focusMonitor.stopMonitoring(this._element);
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelHeader, deps: [], target: i0.ɵɵFactoryTarget.Component });
    static ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "17.0.0", version: "19.2.6", type: MatExpansionPanelHeader, isStandalone: true, selector: "mat-expansion-panel-header", inputs: { expandedHeight: "expandedHeight", collapsedHeight: "collapsedHeight", tabIndex: ["tabIndex", "tabIndex", (value) => (value == null ? 0 : numberAttribute(value))] }, host: { attributes: { "role": "button" }, listeners: { "click": "_toggle()", "keydown": "_keydown($event)" }, properties: { "attr.id": "panel._headerId", "attr.tabindex": "disabled ? -1 : tabIndex", "attr.aria-controls": "_getPanelId()", "attr.aria-expanded": "_isExpanded()", "attr.aria-disabled": "panel.disabled", "class.mat-expanded": "_isExpanded()", "class.mat-expansion-toggle-indicator-after": "_getTogglePosition() === 'after'", "class.mat-expansion-toggle-indicator-before": "_getTogglePosition() === 'before'", "style.height": "_getHeaderHeight()" }, classAttribute: "mat-expansion-panel-header mat-focus-indicator" }, ngImport: i0, template: "<span class=\"mat-content\" [class.mat-content-hide-toggle]=\"!_showToggle()\">\n  <ng-content select=\"mat-panel-title\"></ng-content>\n  <ng-content select=\"mat-panel-description\"></ng-content>\n  <ng-content></ng-content>\n</span>\n\n@if (_showToggle()) {\n  <span class=\"mat-expansion-indicator\">\n    <svg\n      xmlns=\"http://www.w3.org/2000/svg\"\n      viewBox=\"0 -960 960 960\"\n      aria-hidden=\"true\"\n      focusable=\"false\">\n      <path d=\"M480-345 240-585l56-56 184 184 184-184 56 56-240 240Z\"/>\n    </svg>\n  </span>\n}\n", styles: [".mat-expansion-panel-header{display:flex;flex-direction:row;align-items:center;padding:0 24px;border-radius:inherit;height:var(--mat-expansion-header-collapsed-state-height, 48px);font-family:var(--mat-expansion-header-text-font, var(--mat-sys-title-medium-font));font-size:var(--mat-expansion-header-text-size, var(--mat-sys-title-medium-size));font-weight:var(--mat-expansion-header-text-weight, var(--mat-sys-title-medium-weight));line-height:var(--mat-expansion-header-text-line-height, var(--mat-sys-title-medium-line-height));letter-spacing:var(--mat-expansion-header-text-tracking, var(--mat-sys-title-medium-tracking))}.mat-expansion-panel-animations-enabled .mat-expansion-panel-header{transition:height 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel-header::before{border-radius:inherit}.mat-expansion-panel-header.mat-expanded{height:var(--mat-expansion-header-expanded-state-height, 64px)}.mat-expansion-panel-header[aria-disabled=true]{color:var(--mat-expansion-header-disabled-state-text-color, color-mix(in srgb, var(--mat-sys-on-surface) 38%, transparent))}.mat-expansion-panel-header:not([aria-disabled=true]){cursor:pointer}.mat-expansion-panel:not(.mat-expanded) .mat-expansion-panel-header:not([aria-disabled=true]):hover{background:var(--mat-expansion-header-hover-state-layer-color, color-mix(in srgb, var(--mat-sys-on-surface) calc(var(--mat-sys-hover-state-layer-opacity) * 100%), transparent))}@media(hover: none){.mat-expansion-panel:not(.mat-expanded) .mat-expansion-panel-header:not([aria-disabled=true]):hover{background:var(--mat-expansion-container-background-color, var(--mat-sys-surface))}}.mat-expansion-panel .mat-expansion-panel-header:not([aria-disabled=true]).cdk-keyboard-focused,.mat-expansion-panel .mat-expansion-panel-header:not([aria-disabled=true]).cdk-program-focused{background:var(--mat-expansion-header-focus-state-layer-color, color-mix(in srgb, var(--mat-sys-on-surface) calc(var(--mat-sys-focus-state-layer-opacity) * 100%), transparent))}.mat-expansion-panel-header._mat-animation-noopable{transition:none}.mat-expansion-panel-header:focus,.mat-expansion-panel-header:hover{outline:none}.mat-expansion-panel-header.mat-expanded:focus,.mat-expansion-panel-header.mat-expanded:hover{background:inherit}.mat-expansion-panel-header.mat-expansion-toggle-indicator-before{flex-direction:row-reverse}.mat-expansion-panel-header.mat-expansion-toggle-indicator-before .mat-expansion-indicator{margin:0 16px 0 0}[dir=rtl] .mat-expansion-panel-header.mat-expansion-toggle-indicator-before .mat-expansion-indicator{margin:0 0 0 16px}.mat-content{display:flex;flex:1;flex-direction:row;overflow:hidden}.mat-content.mat-content-hide-toggle{margin-right:8px}[dir=rtl] .mat-content.mat-content-hide-toggle{margin-right:0;margin-left:8px}.mat-expansion-toggle-indicator-before .mat-content.mat-content-hide-toggle{margin-left:24px;margin-right:0}[dir=rtl] .mat-expansion-toggle-indicator-before .mat-content.mat-content-hide-toggle{margin-right:24px;margin-left:0}.mat-expansion-panel-header-title{color:var(--mat-expansion-header-text-color, var(--mat-sys-on-surface))}.mat-expansion-panel-header-title,.mat-expansion-panel-header-description{display:flex;flex-grow:1;flex-basis:0;margin-right:16px;align-items:center}[dir=rtl] .mat-expansion-panel-header-title,[dir=rtl] .mat-expansion-panel-header-description{margin-right:0;margin-left:16px}.mat-expansion-panel-header[aria-disabled=true] .mat-expansion-panel-header-title,.mat-expansion-panel-header[aria-disabled=true] .mat-expansion-panel-header-description{color:inherit}.mat-expansion-panel-header-description{flex-grow:2;color:var(--mat-expansion-header-description-color, var(--mat-sys-on-surface-variant))}.mat-expansion-panel-animations-enabled .mat-expansion-indicator{transition:transform 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel-header.mat-expanded .mat-expansion-indicator{transform:rotate(180deg)}.mat-expansion-indicator::after{border-style:solid;border-width:0 2px 2px 0;content:\"\";display:inline-block;padding:3px;transform:rotate(45deg);vertical-align:middle;color:var(--mat-expansion-header-indicator-color, var(--mat-sys-on-surface-variant));display:var(--mat-expansion-legacy-header-indicator-display, none)}.mat-expansion-indicator svg{width:24px;height:24px;margin:0 -8px;vertical-align:middle;fill:var(--mat-expansion-header-indicator-color, var(--mat-sys-on-surface-variant));display:var(--mat-expansion-header-indicator-display, inline-block)}@media(forced-colors: active){.mat-expansion-panel-content{border-top:1px solid;border-top-left-radius:0;border-top-right-radius:0}}\n"], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelHeader, decorators: [{
            type: Component,
            args: [{ selector: 'mat-expansion-panel-header', encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, host: {
                        'class': 'mat-expansion-panel-header mat-focus-indicator',
                        'role': 'button',
                        '[attr.id]': 'panel._headerId',
                        '[attr.tabindex]': 'disabled ? -1 : tabIndex',
                        '[attr.aria-controls]': '_getPanelId()',
                        '[attr.aria-expanded]': '_isExpanded()',
                        '[attr.aria-disabled]': 'panel.disabled',
                        '[class.mat-expanded]': '_isExpanded()',
                        '[class.mat-expansion-toggle-indicator-after]': `_getTogglePosition() === 'after'`,
                        '[class.mat-expansion-toggle-indicator-before]': `_getTogglePosition() === 'before'`,
                        '[style.height]': '_getHeaderHeight()',
                        '(click)': '_toggle()',
                        '(keydown)': '_keydown($event)',
                    }, template: "<span class=\"mat-content\" [class.mat-content-hide-toggle]=\"!_showToggle()\">\n  <ng-content select=\"mat-panel-title\"></ng-content>\n  <ng-content select=\"mat-panel-description\"></ng-content>\n  <ng-content></ng-content>\n</span>\n\n@if (_showToggle()) {\n  <span class=\"mat-expansion-indicator\">\n    <svg\n      xmlns=\"http://www.w3.org/2000/svg\"\n      viewBox=\"0 -960 960 960\"\n      aria-hidden=\"true\"\n      focusable=\"false\">\n      <path d=\"M480-345 240-585l56-56 184 184 184-184 56 56-240 240Z\"/>\n    </svg>\n  </span>\n}\n", styles: [".mat-expansion-panel-header{display:flex;flex-direction:row;align-items:center;padding:0 24px;border-radius:inherit;height:var(--mat-expansion-header-collapsed-state-height, 48px);font-family:var(--mat-expansion-header-text-font, var(--mat-sys-title-medium-font));font-size:var(--mat-expansion-header-text-size, var(--mat-sys-title-medium-size));font-weight:var(--mat-expansion-header-text-weight, var(--mat-sys-title-medium-weight));line-height:var(--mat-expansion-header-text-line-height, var(--mat-sys-title-medium-line-height));letter-spacing:var(--mat-expansion-header-text-tracking, var(--mat-sys-title-medium-tracking))}.mat-expansion-panel-animations-enabled .mat-expansion-panel-header{transition:height 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel-header::before{border-radius:inherit}.mat-expansion-panel-header.mat-expanded{height:var(--mat-expansion-header-expanded-state-height, 64px)}.mat-expansion-panel-header[aria-disabled=true]{color:var(--mat-expansion-header-disabled-state-text-color, color-mix(in srgb, var(--mat-sys-on-surface) 38%, transparent))}.mat-expansion-panel-header:not([aria-disabled=true]){cursor:pointer}.mat-expansion-panel:not(.mat-expanded) .mat-expansion-panel-header:not([aria-disabled=true]):hover{background:var(--mat-expansion-header-hover-state-layer-color, color-mix(in srgb, var(--mat-sys-on-surface) calc(var(--mat-sys-hover-state-layer-opacity) * 100%), transparent))}@media(hover: none){.mat-expansion-panel:not(.mat-expanded) .mat-expansion-panel-header:not([aria-disabled=true]):hover{background:var(--mat-expansion-container-background-color, var(--mat-sys-surface))}}.mat-expansion-panel .mat-expansion-panel-header:not([aria-disabled=true]).cdk-keyboard-focused,.mat-expansion-panel .mat-expansion-panel-header:not([aria-disabled=true]).cdk-program-focused{background:var(--mat-expansion-header-focus-state-layer-color, color-mix(in srgb, var(--mat-sys-on-surface) calc(var(--mat-sys-focus-state-layer-opacity) * 100%), transparent))}.mat-expansion-panel-header._mat-animation-noopable{transition:none}.mat-expansion-panel-header:focus,.mat-expansion-panel-header:hover{outline:none}.mat-expansion-panel-header.mat-expanded:focus,.mat-expansion-panel-header.mat-expanded:hover{background:inherit}.mat-expansion-panel-header.mat-expansion-toggle-indicator-before{flex-direction:row-reverse}.mat-expansion-panel-header.mat-expansion-toggle-indicator-before .mat-expansion-indicator{margin:0 16px 0 0}[dir=rtl] .mat-expansion-panel-header.mat-expansion-toggle-indicator-before .mat-expansion-indicator{margin:0 0 0 16px}.mat-content{display:flex;flex:1;flex-direction:row;overflow:hidden}.mat-content.mat-content-hide-toggle{margin-right:8px}[dir=rtl] .mat-content.mat-content-hide-toggle{margin-right:0;margin-left:8px}.mat-expansion-toggle-indicator-before .mat-content.mat-content-hide-toggle{margin-left:24px;margin-right:0}[dir=rtl] .mat-expansion-toggle-indicator-before .mat-content.mat-content-hide-toggle{margin-right:24px;margin-left:0}.mat-expansion-panel-header-title{color:var(--mat-expansion-header-text-color, var(--mat-sys-on-surface))}.mat-expansion-panel-header-title,.mat-expansion-panel-header-description{display:flex;flex-grow:1;flex-basis:0;margin-right:16px;align-items:center}[dir=rtl] .mat-expansion-panel-header-title,[dir=rtl] .mat-expansion-panel-header-description{margin-right:0;margin-left:16px}.mat-expansion-panel-header[aria-disabled=true] .mat-expansion-panel-header-title,.mat-expansion-panel-header[aria-disabled=true] .mat-expansion-panel-header-description{color:inherit}.mat-expansion-panel-header-description{flex-grow:2;color:var(--mat-expansion-header-description-color, var(--mat-sys-on-surface-variant))}.mat-expansion-panel-animations-enabled .mat-expansion-indicator{transition:transform 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel-header.mat-expanded .mat-expansion-indicator{transform:rotate(180deg)}.mat-expansion-indicator::after{border-style:solid;border-width:0 2px 2px 0;content:\"\";display:inline-block;padding:3px;transform:rotate(45deg);vertical-align:middle;color:var(--mat-expansion-header-indicator-color, var(--mat-sys-on-surface-variant));display:var(--mat-expansion-legacy-header-indicator-display, none)}.mat-expansion-indicator svg{width:24px;height:24px;margin:0 -8px;vertical-align:middle;fill:var(--mat-expansion-header-indicator-color, var(--mat-sys-on-surface-variant));display:var(--mat-expansion-header-indicator-display, inline-block)}@media(forced-colors: active){.mat-expansion-panel-content{border-top:1px solid;border-top-left-radius:0;border-top-right-radius:0}}\n"] }]
        }], ctorParameters: () => [], propDecorators: { expandedHeight: [{
                type: Input
            }], collapsedHeight: [{
                type: Input
            }], tabIndex: [{
                type: Input,
                args: [{
                        transform: (value) => (value == null ? 0 : numberAttribute(value)),
                    }]
            }] } });
/**
 * Description element of a `<mat-expansion-panel-header>`.
 */
class MatExpansionPanelDescription {
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelDescription, deps: [], target: i0.ɵɵFactoryTarget.Directive });
    static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "19.2.6", type: MatExpansionPanelDescription, isStandalone: true, selector: "mat-panel-description", host: { classAttribute: "mat-expansion-panel-header-description" }, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelDescription, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-panel-description',
                    host: {
                        class: 'mat-expansion-panel-header-description',
                    },
                }]
        }] });
/**
 * Title element of a `<mat-expansion-panel-header>`.
 */
class MatExpansionPanelTitle {
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelTitle, deps: [], target: i0.ɵɵFactoryTarget.Directive });
    static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "19.2.6", type: MatExpansionPanelTitle, isStandalone: true, selector: "mat-panel-title", host: { classAttribute: "mat-expansion-panel-header-title" }, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionPanelTitle, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-panel-title',
                    host: {
                        class: 'mat-expansion-panel-header-title',
                    },
                }]
        }] });

/**
 * Directive for a Material Design Accordion.
 */
class MatAccordion extends CdkAccordion {
    _keyManager;
    /** Headers belonging to this accordion. */
    _ownHeaders = new QueryList();
    /** All headers inside the accordion. Includes headers inside nested accordions. */
    _headers;
    /** Whether the expansion indicator should be hidden. */
    hideToggle = false;
    /**
     * Display mode used for all expansion panels in the accordion. Currently two display
     * modes exist:
     *  default - a gutter-like spacing is placed around any expanded panel, placing the expanded
     *     panel at a different elevation from the rest of the accordion.
     *  flat - no spacing is placed around expanded panels, showing all panels at the same
     *     elevation.
     */
    displayMode = 'default';
    /** The position of the expansion indicator. */
    togglePosition = 'after';
    ngAfterContentInit() {
        this._headers.changes
            .pipe(startWith(this._headers))
            .subscribe((headers) => {
            this._ownHeaders.reset(headers.filter(header => header.panel.accordion === this));
            this._ownHeaders.notifyOnChanges();
        });
        this._keyManager = new FocusKeyManager(this._ownHeaders).withWrap().withHomeAndEnd();
    }
    /** Handles keyboard events coming in from the panel headers. */
    _handleHeaderKeydown(event) {
        this._keyManager.onKeydown(event);
    }
    _handleHeaderFocus(header) {
        this._keyManager.updateActiveItem(header);
    }
    ngOnDestroy() {
        super.ngOnDestroy();
        this._keyManager?.destroy();
        this._ownHeaders.destroy();
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatAccordion, deps: null, target: i0.ɵɵFactoryTarget.Directive });
    static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "16.1.0", version: "19.2.6", type: MatAccordion, isStandalone: true, selector: "mat-accordion", inputs: { hideToggle: ["hideToggle", "hideToggle", booleanAttribute], displayMode: "displayMode", togglePosition: "togglePosition" }, host: { properties: { "class.mat-accordion-multi": "this.multi" }, classAttribute: "mat-accordion" }, providers: [
            {
                provide: MAT_ACCORDION,
                useExisting: MatAccordion,
            },
        ], queries: [{ propertyName: "_headers", predicate: MatExpansionPanelHeader, descendants: true }], exportAs: ["matAccordion"], usesInheritance: true, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatAccordion, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-accordion',
                    exportAs: 'matAccordion',
                    providers: [
                        {
                            provide: MAT_ACCORDION,
                            useExisting: MatAccordion,
                        },
                    ],
                    host: {
                        class: 'mat-accordion',
                        // Class binding which is only used by the test harness as there is no other
                        // way for the harness to detect if multiple panel support is enabled.
                        '[class.mat-accordion-multi]': 'this.multi',
                    },
                }]
        }], propDecorators: { _headers: [{
                type: ContentChildren,
                args: [MatExpansionPanelHeader, { descendants: true }]
            }], hideToggle: [{
                type: Input,
                args: [{ transform: booleanAttribute }]
            }], displayMode: [{
                type: Input
            }], togglePosition: [{
                type: Input
            }] } });

class MatExpansionModule {
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
    static ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionModule, imports: [MatCommonModule,
            CdkAccordionModule,
            PortalModule,
            MatAccordion,
            MatExpansionPanel,
            MatExpansionPanelActionRow,
            MatExpansionPanelHeader,
            MatExpansionPanelTitle,
            MatExpansionPanelDescription,
            MatExpansionPanelContent], exports: [MatAccordion,
            MatExpansionPanel,
            MatExpansionPanelActionRow,
            MatExpansionPanelHeader,
            MatExpansionPanelTitle,
            MatExpansionPanelDescription,
            MatExpansionPanelContent] });
    static ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionModule, imports: [MatCommonModule,
            CdkAccordionModule,
            PortalModule] });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.6", ngImport: i0, type: MatExpansionModule, decorators: [{
            type: NgModule,
            args: [{
                    imports: [
                        MatCommonModule,
                        CdkAccordionModule,
                        PortalModule,
                        MatAccordion,
                        MatExpansionPanel,
                        MatExpansionPanelActionRow,
                        MatExpansionPanelHeader,
                        MatExpansionPanelTitle,
                        MatExpansionPanelDescription,
                        MatExpansionPanelContent,
                    ],
                    exports: [
                        MatAccordion,
                        MatExpansionPanel,
                        MatExpansionPanelActionRow,
                        MatExpansionPanelHeader,
                        MatExpansionPanelTitle,
                        MatExpansionPanelDescription,
                        MatExpansionPanelContent,
                    ],
                }]
        }] });

/**
 * Time and timing curve for expansion panel animations.
 * @deprecated No longer used. Will be removed.
 * @breaking-change 21.0.0
 */
const EXPANSION_PANEL_ANIMATION_TIMING = '225ms cubic-bezier(0.4,0.0,0.2,1)';
/**
 * Animations used by the Material expansion panel.
 *
 * A bug in angular animation's `state` when ViewContainers are moved using ViewContainerRef.move()
 * causes the animation state of moved components to become `void` upon exit, and not update again
 * upon reentry into the DOM. This can lead a to situation for the expansion panel where the state
 * of the panel is `expanded` or `collapsed` but the animation state is `void`.
 *
 * To correctly handle animating to the next state, we animate between `void` and `collapsed` which
 * are defined to have the same styles. Since angular animates from the current styles to the
 * destination state's style definition, in situations where we are moving from `void`'s styles to
 * `collapsed` this acts a noop since no style values change.
 *
 * In the case where angular's animation state is out of sync with the expansion panel's state, the
 * expansion panel being `expanded` and angular animations being `void`, the animation from the
 * `expanded`'s effective styles (though in a `void` animation state) to the collapsed state will
 * occur as expected.
 *
 * Angular Bug: https://github.com/angular/angular/issues/18847
 *
 * @docs-private
 * @deprecated No longer being used, to be removed.
 * @breaking-change 21.0.0
 */
const matExpansionAnimations = {
    // Represents:
    // trigger('indicatorRotate', [
    //   state('collapsed, void', style({transform: 'rotate(0deg)'})),
    //   state('expanded', style({transform: 'rotate(180deg)'})),
    //   transition(
    //     'expanded <=> collapsed, void => collapsed',
    //     animate(EXPANSION_PANEL_ANIMATION_TIMING),
    //   ),
    // ])
    /** Animation that rotates the indicator arrow. */
    indicatorRotate: {
        type: 7,
        name: 'indicatorRotate',
        definitions: [
            {
                type: 0,
                name: 'collapsed, void',
                styles: { type: 6, styles: { transform: 'rotate(0deg)' }, offset: null },
            },
            {
                type: 0,
                name: 'expanded',
                styles: { type: 6, styles: { transform: 'rotate(180deg)' }, offset: null },
            },
            {
                type: 1,
                expr: 'expanded <=> collapsed, void => collapsed',
                animation: { type: 4, styles: null, timings: '225ms cubic-bezier(0.4,0.0,0.2,1)' },
                options: null,
            },
        ],
        options: {},
    },
    // Represents:
    // trigger('bodyExpansion', [
    //   state('collapsed, void', style({height: '0px', visibility: 'hidden'})),
    //   // Clear the `visibility` while open, otherwise the content will be visible when placed in
    //   // a parent that's `visibility: hidden`, because `visibility` doesn't apply to descendants
    //   // that have a `visibility` of their own (see #27436).
    //   state('expanded', style({height: '*', visibility: ''})),
    //   transition(
    //     'expanded <=> collapsed, void => collapsed',
    //     animate(EXPANSION_PANEL_ANIMATION_TIMING),
    //   ),
    // ])
    /** Animation that expands and collapses the panel content. */
    bodyExpansion: {
        type: 7,
        name: 'bodyExpansion',
        definitions: [
            {
                type: 0,
                name: 'collapsed, void',
                styles: { type: 6, styles: { 'height': '0px', 'visibility': 'hidden' }, offset: null },
            },
            {
                type: 0,
                name: 'expanded',
                styles: { type: 6, styles: { 'height': '*', 'visibility': '' }, offset: null },
            },
            {
                type: 1,
                expr: 'expanded <=> collapsed, void => collapsed',
                animation: { type: 4, styles: null, timings: '225ms cubic-bezier(0.4,0.0,0.2,1)' },
                options: null,
            },
        ],
        options: {},
    },
};

export { EXPANSION_PANEL_ANIMATION_TIMING, MAT_ACCORDION, MAT_EXPANSION_PANEL, MAT_EXPANSION_PANEL_DEFAULT_OPTIONS, MatAccordion, MatExpansionModule, MatExpansionPanel, MatExpansionPanelActionRow, MatExpansionPanelContent, MatExpansionPanelDescription, MatExpansionPanelHeader, MatExpansionPanelTitle, matExpansionAnimations };
//# sourceMappingURL=expansion.mjs.map