`\n // and attach a portal programmatically in the parent component. When Angular does the first CD\n // round, it will fire the setter with empty string, causing the user's content to be cleared.\n if (this.hasAttached() && !portal && !this._isInitialized) {\n return;\n }\n if (this.hasAttached()) {\n super.detach();\n }\n if (portal) {\n super.attach(portal);\n }\n this._attachedPortal = portal || null;\n }\n /** Component or view reference that is attached to the portal. */\n get attachedRef() {\n return this._attachedRef;\n }\n ngOnInit() {\n this._isInitialized = true;\n }\n ngOnDestroy() {\n super.dispose();\n this._attachedPortal = null;\n this._attachedRef = null;\n }\n /**\n * Attach the given ComponentPortal to this PortalOutlet using the ComponentFactoryResolver.\n *\n * @param portal Portal to be attached to the portal outlet.\n * @returns Reference to the created component.\n */\n attachComponentPortal(portal) {\n portal.setAttachedHost(this);\n // If the portal specifies an origin, use that as the logical location of the component\n // in the application tree. Otherwise use the location of this PortalOutlet.\n const viewContainerRef = portal.viewContainerRef != null ? portal.viewContainerRef : this._viewContainerRef;\n const resolver = portal.componentFactoryResolver || this._componentFactoryResolver;\n const componentFactory = resolver.resolveComponentFactory(portal.component);\n const ref = viewContainerRef.createComponent(componentFactory, viewContainerRef.length, portal.injector || viewContainerRef.injector);\n // If we're using a view container that's different from the injected one (e.g. when the portal\n // specifies its own) we need to move the component into the outlet, otherwise it'll be rendered\n // inside of the alternate view container.\n if (viewContainerRef !== this._viewContainerRef) {\n this._getRootNode().appendChild(ref.hostView.rootNodes[0]);\n }\n super.setDisposeFn(() => ref.destroy());\n this._attachedPortal = portal;\n this._attachedRef = ref;\n this.attached.emit(ref);\n return ref;\n }\n /**\n * Attach the given TemplatePortal to this PortalHost as an embedded View.\n * @param portal Portal to be attached.\n * @returns Reference to the created embedded view.\n */\n attachTemplatePortal(portal) {\n portal.setAttachedHost(this);\n const viewRef = this._viewContainerRef.createEmbeddedView(portal.templateRef, portal.context);\n super.setDisposeFn(() => this._viewContainerRef.clear());\n this._attachedPortal = portal;\n this._attachedRef = viewRef;\n this.attached.emit(viewRef);\n return viewRef;\n }\n /** Gets the root node of the portal outlet. */\n _getRootNode() {\n const nativeElement = this._viewContainerRef.element.nativeElement;\n // The directive could be set on a template which will result in a comment\n // node being the root. Use the comment's parent node if that is the case.\n return (nativeElement.nodeType === nativeElement.ELEMENT_NODE\n ? nativeElement\n : nativeElement.parentNode);\n }\n}\nCdkPortalOutlet.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkPortalOutlet, deps: [{ token: i0.ComponentFactoryResolver }, { token: i0.ViewContainerRef }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Directive });\nCdkPortalOutlet.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"12.0.0\", version: \"13.3.0\", type: CdkPortalOutlet, selector: \"[cdkPortalOutlet]\", inputs: { portal: [\"cdkPortalOutlet\", \"portal\"] }, outputs: { attached: \"attached\" }, exportAs: [\"cdkPortalOutlet\"], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkPortalOutlet, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkPortalOutlet]',\n exportAs: 'cdkPortalOutlet',\n inputs: ['portal: cdkPortalOutlet'],\n }]\n }], ctorParameters: function () {\n return [{ type: i0.ComponentFactoryResolver }, { type: i0.ViewContainerRef }, { type: undefined, decorators: [{\n type: Inject,\n args: [DOCUMENT]\n }] }];\n }, propDecorators: { attached: [{\n type: Output\n }] } });\n/**\n * @deprecated Use `CdkPortalOutlet` instead.\n * @breaking-change 9.0.0\n */\nclass PortalHostDirective extends CdkPortalOutlet {\n}\nPortalHostDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: PortalHostDirective, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nPortalHostDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"12.0.0\", version: \"13.3.0\", type: PortalHostDirective, selector: \"[cdkPortalHost], [portalHost]\", inputs: { portal: [\"cdkPortalHost\", \"portal\"] }, providers: [\n {\n provide: CdkPortalOutlet,\n useExisting: PortalHostDirective,\n },\n ], exportAs: [\"cdkPortalHost\"], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: PortalHostDirective, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkPortalHost], [portalHost]',\n exportAs: 'cdkPortalHost',\n inputs: ['portal: cdkPortalHost'],\n providers: [\n {\n provide: CdkPortalOutlet,\n useExisting: PortalHostDirective,\n },\n ],\n }]\n }] });\nclass PortalModule {\n}\nPortalModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: PortalModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nPortalModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: PortalModule, declarations: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective], exports: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective] });\nPortalModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: PortalModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: PortalModule, decorators: [{\n type: NgModule,\n args: [{\n exports: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective],\n declarations: [CdkPortal, CdkPortalOutlet, TemplatePortalDirective, PortalHostDirective],\n }]\n }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Custom injector to be used when providing custom\n * injection tokens to components inside a portal.\n * @docs-private\n * @deprecated Use `Injector.create` instead.\n * @breaking-change 11.0.0\n */\nclass PortalInjector {\n constructor(_parentInjector, _customTokens) {\n this._parentInjector = _parentInjector;\n this._customTokens = _customTokens;\n }\n get(token, notFoundValue) {\n const value = this._customTokens.get(token);\n if (typeof value !== 'undefined') {\n return value;\n }\n return this._parentInjector.get(token, notFoundValue);\n }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BasePortalHost, BasePortalOutlet, CdkPortal, CdkPortalOutlet, ComponentPortal, DomPortal, DomPortalHost, DomPortalOutlet, Portal, PortalHostDirective, PortalInjector, PortalModule, TemplatePortal, TemplatePortalDirective };\n","import { coerceNumberProperty, coerceElement, coerceBooleanProperty } from '@angular/cdk/coercion';\nimport * as i0 from '@angular/core';\nimport { InjectionToken, forwardRef, Directive, Input, Injectable, Optional, Inject, Component, ViewEncapsulation, ChangeDetectionStrategy, Output, ViewChild, SkipSelf, NgModule } from '@angular/core';\nimport { Subject, of, Observable, fromEvent, animationFrameScheduler, asapScheduler, Subscription, isObservable } from 'rxjs';\nimport { distinctUntilChanged, auditTime, filter, takeUntil, startWith, pairwise, switchMap, shareReplay } from 'rxjs/operators';\nimport { DOCUMENT } from '@angular/common';\nimport * as i1 from '@angular/cdk/platform';\nimport { getRtlScrollAxisType, supportsScrollBehavior } from '@angular/cdk/platform';\nimport * as i2 from '@angular/cdk/bidi';\nimport { BidiModule } from '@angular/cdk/bidi';\nimport * as i2$1 from '@angular/cdk/collections';\nimport { isDataSource, ArrayDataSource, _VIEW_REPEATER_STRATEGY, _RecycleViewRepeaterStrategy } from '@angular/cdk/collections';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** The injection token used to specify the virtual scrolling strategy. */\nconst VIRTUAL_SCROLL_STRATEGY = new InjectionToken('VIRTUAL_SCROLL_STRATEGY');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Virtual scrolling strategy for lists with items of known fixed size. */\nclass FixedSizeVirtualScrollStrategy {\n /**\n * @param itemSize The size of the items in the virtually scrolling list.\n * @param minBufferPx The minimum amount of buffer (in pixels) before needing to render more\n * @param maxBufferPx The amount of buffer (in pixels) to render when rendering more.\n */\n constructor(itemSize, minBufferPx, maxBufferPx) {\n this._scrolledIndexChange = new Subject();\n /** @docs-private Implemented as part of VirtualScrollStrategy. */\n this.scrolledIndexChange = this._scrolledIndexChange.pipe(distinctUntilChanged());\n /** The attached viewport. */\n this._viewport = null;\n this._itemSize = itemSize;\n this._minBufferPx = minBufferPx;\n this._maxBufferPx = maxBufferPx;\n }\n /**\n * Attaches this scroll strategy to a viewport.\n * @param viewport The viewport to attach this strategy to.\n */\n attach(viewport) {\n this._viewport = viewport;\n this._updateTotalContentSize();\n this._updateRenderedRange();\n }\n /** Detaches this scroll strategy from the currently attached viewport. */\n detach() {\n this._scrolledIndexChange.complete();\n this._viewport = null;\n }\n /**\n * Update the item size and buffer size.\n * @param itemSize The size of the items in the virtually scrolling list.\n * @param minBufferPx The minimum amount of buffer (in pixels) before needing to render more\n * @param maxBufferPx The amount of buffer (in pixels) to render when rendering more.\n */\n updateItemAndBufferSize(itemSize, minBufferPx, maxBufferPx) {\n if (maxBufferPx < minBufferPx && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('CDK virtual scroll: maxBufferPx must be greater than or equal to minBufferPx');\n }\n this._itemSize = itemSize;\n this._minBufferPx = minBufferPx;\n this._maxBufferPx = maxBufferPx;\n this._updateTotalContentSize();\n this._updateRenderedRange();\n }\n /** @docs-private Implemented as part of VirtualScrollStrategy. */\n onContentScrolled() {\n this._updateRenderedRange();\n }\n /** @docs-private Implemented as part of VirtualScrollStrategy. */\n onDataLengthChanged() {\n this._updateTotalContentSize();\n this._updateRenderedRange();\n }\n /** @docs-private Implemented as part of VirtualScrollStrategy. */\n onContentRendered() {\n /* no-op */\n }\n /** @docs-private Implemented as part of VirtualScrollStrategy. */\n onRenderedOffsetChanged() {\n /* no-op */\n }\n /**\n * Scroll to the offset for the given index.\n * @param index The index of the element to scroll to.\n * @param behavior The ScrollBehavior to use when scrolling.\n */\n scrollToIndex(index, behavior) {\n if (this._viewport) {\n this._viewport.scrollToOffset(index * this._itemSize, behavior);\n }\n }\n /** Update the viewport's total content size. */\n _updateTotalContentSize() {\n if (!this._viewport) {\n return;\n }\n this._viewport.setTotalContentSize(this._viewport.getDataLength() * this._itemSize);\n }\n /** Update the viewport's rendered range. */\n _updateRenderedRange() {\n if (!this._viewport) {\n return;\n }\n const renderedRange = this._viewport.getRenderedRange();\n const newRange = { start: renderedRange.start, end: renderedRange.end };\n const viewportSize = this._viewport.getViewportSize();\n const dataLength = this._viewport.getDataLength();\n let scrollOffset = this._viewport.measureScrollOffset();\n // Prevent NaN as result when dividing by zero.\n let firstVisibleIndex = this._itemSize > 0 ? scrollOffset / this._itemSize : 0;\n // If user scrolls to the bottom of the list and data changes to a smaller list\n if (newRange.end > dataLength) {\n // We have to recalculate the first visible index based on new data length and viewport size.\n const maxVisibleItems = Math.ceil(viewportSize / this._itemSize);\n const newVisibleIndex = Math.max(0, Math.min(firstVisibleIndex, dataLength - maxVisibleItems));\n // If first visible index changed we must update scroll offset to handle start/end buffers\n // Current range must also be adjusted to cover the new position (bottom of new list).\n if (firstVisibleIndex != newVisibleIndex) {\n firstVisibleIndex = newVisibleIndex;\n scrollOffset = newVisibleIndex * this._itemSize;\n newRange.start = Math.floor(firstVisibleIndex);\n }\n newRange.end = Math.max(0, Math.min(dataLength, newRange.start + maxVisibleItems));\n }\n const startBuffer = scrollOffset - newRange.start * this._itemSize;\n if (startBuffer < this._minBufferPx && newRange.start != 0) {\n const expandStart = Math.ceil((this._maxBufferPx - startBuffer) / this._itemSize);\n newRange.start = Math.max(0, newRange.start - expandStart);\n newRange.end = Math.min(dataLength, Math.ceil(firstVisibleIndex + (viewportSize + this._minBufferPx) / this._itemSize));\n }\n else {\n const endBuffer = newRange.end * this._itemSize - (scrollOffset + viewportSize);\n if (endBuffer < this._minBufferPx && newRange.end != dataLength) {\n const expandEnd = Math.ceil((this._maxBufferPx - endBuffer) / this._itemSize);\n if (expandEnd > 0) {\n newRange.end = Math.min(dataLength, newRange.end + expandEnd);\n newRange.start = Math.max(0, Math.floor(firstVisibleIndex - this._minBufferPx / this._itemSize));\n }\n }\n }\n this._viewport.setRenderedRange(newRange);\n this._viewport.setRenderedContentOffset(this._itemSize * newRange.start);\n this._scrolledIndexChange.next(Math.floor(firstVisibleIndex));\n }\n}\n/**\n * Provider factory for `FixedSizeVirtualScrollStrategy` that simply extracts the already created\n * `FixedSizeVirtualScrollStrategy` from the given directive.\n * @param fixedSizeDir The instance of `CdkFixedSizeVirtualScroll` to extract the\n * `FixedSizeVirtualScrollStrategy` from.\n */\nfunction _fixedSizeVirtualScrollStrategyFactory(fixedSizeDir) {\n return fixedSizeDir._scrollStrategy;\n}\n/** A virtual scroll strategy that supports fixed-size items. */\nclass CdkFixedSizeVirtualScroll {\n constructor() {\n this._itemSize = 20;\n this._minBufferPx = 100;\n this._maxBufferPx = 200;\n /** The scroll strategy used by this directive. */\n this._scrollStrategy = new FixedSizeVirtualScrollStrategy(this.itemSize, this.minBufferPx, this.maxBufferPx);\n }\n /** The size of the items in the list (in pixels). */\n get itemSize() {\n return this._itemSize;\n }\n set itemSize(value) {\n this._itemSize = coerceNumberProperty(value);\n }\n /**\n * The minimum amount of buffer rendered beyond the viewport (in pixels).\n * If the amount of buffer dips below this number, more items will be rendered. Defaults to 100px.\n */\n get minBufferPx() {\n return this._minBufferPx;\n }\n set minBufferPx(value) {\n this._minBufferPx = coerceNumberProperty(value);\n }\n /**\n * The number of pixels worth of buffer to render for when rendering new items. Defaults to 200px.\n */\n get maxBufferPx() {\n return this._maxBufferPx;\n }\n set maxBufferPx(value) {\n this._maxBufferPx = coerceNumberProperty(value);\n }\n ngOnChanges() {\n this._scrollStrategy.updateItemAndBufferSize(this.itemSize, this.minBufferPx, this.maxBufferPx);\n }\n}\nCdkFixedSizeVirtualScroll.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkFixedSizeVirtualScroll, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nCdkFixedSizeVirtualScroll.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"12.0.0\", version: \"13.3.0\", type: CdkFixedSizeVirtualScroll, selector: \"cdk-virtual-scroll-viewport[itemSize]\", inputs: { itemSize: \"itemSize\", minBufferPx: \"minBufferPx\", maxBufferPx: \"maxBufferPx\" }, providers: [\n {\n provide: VIRTUAL_SCROLL_STRATEGY,\n useFactory: _fixedSizeVirtualScrollStrategyFactory,\n deps: [forwardRef(() => CdkFixedSizeVirtualScroll)],\n },\n ], usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkFixedSizeVirtualScroll, decorators: [{\n type: Directive,\n args: [{\n selector: 'cdk-virtual-scroll-viewport[itemSize]',\n providers: [\n {\n provide: VIRTUAL_SCROLL_STRATEGY,\n useFactory: _fixedSizeVirtualScrollStrategyFactory,\n deps: [forwardRef(() => CdkFixedSizeVirtualScroll)],\n },\n ],\n }]\n }], propDecorators: { itemSize: [{\n type: Input\n }], minBufferPx: [{\n type: Input\n }], maxBufferPx: [{\n type: Input\n }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Time in ms to throttle the scrolling events by default. */\nconst DEFAULT_SCROLL_TIME = 20;\n/**\n * Service contained all registered Scrollable references and emits an event when any one of the\n * Scrollable references emit a scrolled event.\n */\nclass ScrollDispatcher {\n constructor(_ngZone, _platform, document) {\n this._ngZone = _ngZone;\n this._platform = _platform;\n /** Subject for notifying that a registered scrollable reference element has been scrolled. */\n this._scrolled = new Subject();\n /** Keeps track of the global `scroll` and `resize` subscriptions. */\n this._globalSubscription = null;\n /** Keeps track of the amount of subscriptions to `scrolled`. Used for cleaning up afterwards. */\n this._scrolledCount = 0;\n /**\n * Map of all the scrollable references that are registered with the service and their\n * scroll event subscriptions.\n */\n this.scrollContainers = new Map();\n this._document = document;\n }\n /**\n * Registers a scrollable instance with the service and listens for its scrolled events. When the\n * scrollable is scrolled, the service emits the event to its scrolled observable.\n * @param scrollable Scrollable instance to be registered.\n */\n register(scrollable) {\n if (!this.scrollContainers.has(scrollable)) {\n this.scrollContainers.set(scrollable, scrollable.elementScrolled().subscribe(() => this._scrolled.next(scrollable)));\n }\n }\n /**\n * Deregisters a Scrollable reference and unsubscribes from its scroll event observable.\n * @param scrollable Scrollable instance to be deregistered.\n */\n deregister(scrollable) {\n const scrollableReference = this.scrollContainers.get(scrollable);\n if (scrollableReference) {\n scrollableReference.unsubscribe();\n this.scrollContainers.delete(scrollable);\n }\n }\n /**\n * Returns an observable that emits an event whenever any of the registered Scrollable\n * references (or window, document, or body) fire a scrolled event. Can provide a time in ms\n * to override the default \"throttle\" time.\n *\n * **Note:** in order to avoid hitting change detection for every scroll event,\n * all of the events emitted from this stream will be run outside the Angular zone.\n * If you need to update any data bindings as a result of a scroll event, you have\n * to run the callback using `NgZone.run`.\n */\n scrolled(auditTimeInMs = DEFAULT_SCROLL_TIME) {\n if (!this._platform.isBrowser) {\n return of();\n }\n return new Observable((observer) => {\n if (!this._globalSubscription) {\n this._addGlobalListener();\n }\n // In the case of a 0ms delay, use an observable without auditTime\n // since it does add a perceptible delay in processing overhead.\n const subscription = auditTimeInMs > 0\n ? this._scrolled.pipe(auditTime(auditTimeInMs)).subscribe(observer)\n : this._scrolled.subscribe(observer);\n this._scrolledCount++;\n return () => {\n subscription.unsubscribe();\n this._scrolledCount--;\n if (!this._scrolledCount) {\n this._removeGlobalListener();\n }\n };\n });\n }\n ngOnDestroy() {\n this._removeGlobalListener();\n this.scrollContainers.forEach((_, container) => this.deregister(container));\n this._scrolled.complete();\n }\n /**\n * Returns an observable that emits whenever any of the\n * scrollable ancestors of an element are scrolled.\n * @param elementOrElementRef Element whose ancestors to listen for.\n * @param auditTimeInMs Time to throttle the scroll events.\n */\n ancestorScrolled(elementOrElementRef, auditTimeInMs) {\n const ancestors = this.getAncestorScrollContainers(elementOrElementRef);\n return this.scrolled(auditTimeInMs).pipe(filter(target => {\n return !target || ancestors.indexOf(target) > -1;\n }));\n }\n /** Returns all registered Scrollables that contain the provided element. */\n getAncestorScrollContainers(elementOrElementRef) {\n const scrollingContainers = [];\n this.scrollContainers.forEach((_subscription, scrollable) => {\n if (this._scrollableContainsElement(scrollable, elementOrElementRef)) {\n scrollingContainers.push(scrollable);\n }\n });\n return scrollingContainers;\n }\n /** Use defaultView of injected document if available or fallback to global window reference */\n _getWindow() {\n return this._document.defaultView || window;\n }\n /** Returns true if the element is contained within the provided Scrollable. */\n _scrollableContainsElement(scrollable, elementOrElementRef) {\n let element = coerceElement(elementOrElementRef);\n let scrollableElement = scrollable.getElementRef().nativeElement;\n // Traverse through the element parents until we reach null, checking if any of the elements\n // are the scrollable's element.\n do {\n if (element == scrollableElement) {\n return true;\n }\n } while ((element = element.parentElement));\n return false;\n }\n /** Sets up the global scroll listeners. */\n _addGlobalListener() {\n this._globalSubscription = this._ngZone.runOutsideAngular(() => {\n const window = this._getWindow();\n return fromEvent(window.document, 'scroll').subscribe(() => this._scrolled.next());\n });\n }\n /** Cleans up the global scroll listener. */\n _removeGlobalListener() {\n if (this._globalSubscription) {\n this._globalSubscription.unsubscribe();\n this._globalSubscription = null;\n }\n }\n}\nScrollDispatcher.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollDispatcher, deps: [{ token: i0.NgZone }, { token: i1.Platform }, { token: DOCUMENT, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nScrollDispatcher.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollDispatcher, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollDispatcher, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: function () {\n return [{ type: i0.NgZone }, { type: i1.Platform }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [DOCUMENT]\n }] }];\n } });\n\n/**\n * Sends an event when the directive's element is scrolled. Registers itself with the\n * ScrollDispatcher service to include itself as part of its collection of scrolling events that it\n * can be listened to through the service.\n */\nclass CdkScrollable {\n constructor(elementRef, scrollDispatcher, ngZone, dir) {\n this.elementRef = elementRef;\n this.scrollDispatcher = scrollDispatcher;\n this.ngZone = ngZone;\n this.dir = dir;\n this._destroyed = new Subject();\n this._elementScrolled = new Observable((observer) => this.ngZone.runOutsideAngular(() => fromEvent(this.elementRef.nativeElement, 'scroll')\n .pipe(takeUntil(this._destroyed))\n .subscribe(observer)));\n }\n ngOnInit() {\n this.scrollDispatcher.register(this);\n }\n ngOnDestroy() {\n this.scrollDispatcher.deregister(this);\n this._destroyed.next();\n this._destroyed.complete();\n }\n /** Returns observable that emits when a scroll event is fired on the host element. */\n elementScrolled() {\n return this._elementScrolled;\n }\n /** Gets the ElementRef for the viewport. */\n getElementRef() {\n return this.elementRef;\n }\n /**\n * Scrolls to the specified offsets. This is a normalized version of the browser's native scrollTo\n * method, since browsers are not consistent about what scrollLeft means in RTL. For this method\n * left and right always refer to the left and right side of the scrolling container irrespective\n * of the layout direction. start and end refer to left and right in an LTR context and vice-versa\n * in an RTL context.\n * @param options specified the offsets to scroll to.\n */\n scrollTo(options) {\n const el = this.elementRef.nativeElement;\n const isRtl = this.dir && this.dir.value == 'rtl';\n // Rewrite start & end offsets as right or left offsets.\n if (options.left == null) {\n options.left = isRtl ? options.end : options.start;\n }\n if (options.right == null) {\n options.right = isRtl ? options.start : options.end;\n }\n // Rewrite the bottom offset as a top offset.\n if (options.bottom != null) {\n options.top =\n el.scrollHeight - el.clientHeight - options.bottom;\n }\n // Rewrite the right offset as a left offset.\n if (isRtl && getRtlScrollAxisType() != 0 /* NORMAL */) {\n if (options.left != null) {\n options.right =\n el.scrollWidth - el.clientWidth - options.left;\n }\n if (getRtlScrollAxisType() == 2 /* INVERTED */) {\n options.left = options.right;\n }\n else if (getRtlScrollAxisType() == 1 /* NEGATED */) {\n options.left = options.right ? -options.right : options.right;\n }\n }\n else {\n if (options.right != null) {\n options.left =\n el.scrollWidth - el.clientWidth - options.right;\n }\n }\n this._applyScrollToOptions(options);\n }\n _applyScrollToOptions(options) {\n const el = this.elementRef.nativeElement;\n if (supportsScrollBehavior()) {\n el.scrollTo(options);\n }\n else {\n if (options.top != null) {\n el.scrollTop = options.top;\n }\n if (options.left != null) {\n el.scrollLeft = options.left;\n }\n }\n }\n /**\n * Measures the scroll offset relative to the specified edge of the viewport. This method can be\n * used instead of directly checking scrollLeft or scrollTop, since browsers are not consistent\n * about what scrollLeft means in RTL. The values returned by this method are normalized such that\n * left and right always refer to the left and right side of the scrolling container irrespective\n * of the layout direction. start and end refer to left and right in an LTR context and vice-versa\n * in an RTL context.\n * @param from The edge to measure from.\n */\n measureScrollOffset(from) {\n const LEFT = 'left';\n const RIGHT = 'right';\n const el = this.elementRef.nativeElement;\n if (from == 'top') {\n return el.scrollTop;\n }\n if (from == 'bottom') {\n return el.scrollHeight - el.clientHeight - el.scrollTop;\n }\n // Rewrite start & end as left or right offsets.\n const isRtl = this.dir && this.dir.value == 'rtl';\n if (from == 'start') {\n from = isRtl ? RIGHT : LEFT;\n }\n else if (from == 'end') {\n from = isRtl ? LEFT : RIGHT;\n }\n if (isRtl && getRtlScrollAxisType() == 2 /* INVERTED */) {\n // For INVERTED, scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and\n // 0 when scrolled all the way right.\n if (from == LEFT) {\n return el.scrollWidth - el.clientWidth - el.scrollLeft;\n }\n else {\n return el.scrollLeft;\n }\n }\n else if (isRtl && getRtlScrollAxisType() == 1 /* NEGATED */) {\n // For NEGATED, scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and\n // 0 when scrolled all the way right.\n if (from == LEFT) {\n return el.scrollLeft + el.scrollWidth - el.clientWidth;\n }\n else {\n return -el.scrollLeft;\n }\n }\n else {\n // For NORMAL, as well as non-RTL contexts, scrollLeft is 0 when scrolled all the way left and\n // (scrollWidth - clientWidth) when scrolled all the way right.\n if (from == LEFT) {\n return el.scrollLeft;\n }\n else {\n return el.scrollWidth - el.clientWidth - el.scrollLeft;\n }\n }\n }\n}\nCdkScrollable.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkScrollable, deps: [{ token: i0.ElementRef }, { token: ScrollDispatcher }, { token: i0.NgZone }, { token: i2.Directionality, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nCdkScrollable.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"12.0.0\", version: \"13.3.0\", type: CdkScrollable, selector: \"[cdk-scrollable], [cdkScrollable]\", ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkScrollable, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdk-scrollable], [cdkScrollable]',\n }]\n }], ctorParameters: function () {\n return [{ type: i0.ElementRef }, { type: ScrollDispatcher }, { type: i0.NgZone }, { type: i2.Directionality, decorators: [{\n type: Optional\n }] }];\n } });\n\n/** Time in ms to throttle the resize events by default. */\nconst DEFAULT_RESIZE_TIME = 20;\n/**\n * Simple utility for getting the bounds of the browser viewport.\n * @docs-private\n */\nclass ViewportRuler {\n constructor(_platform, ngZone, document) {\n this._platform = _platform;\n /** Stream of viewport change events. */\n this._change = new Subject();\n /** Event listener that will be used to handle the viewport change events. */\n this._changeListener = (event) => {\n this._change.next(event);\n };\n this._document = document;\n ngZone.runOutsideAngular(() => {\n if (_platform.isBrowser) {\n const window = this._getWindow();\n // Note that bind the events ourselves, rather than going through something like RxJS's\n // `fromEvent` so that we can ensure that they're bound outside of the NgZone.\n window.addEventListener('resize', this._changeListener);\n window.addEventListener('orientationchange', this._changeListener);\n }\n // Clear the cached position so that the viewport is re-measured next time it is required.\n // We don't need to keep track of the subscription, because it is completed on destroy.\n this.change().subscribe(() => (this._viewportSize = null));\n });\n }\n ngOnDestroy() {\n if (this._platform.isBrowser) {\n const window = this._getWindow();\n window.removeEventListener('resize', this._changeListener);\n window.removeEventListener('orientationchange', this._changeListener);\n }\n this._change.complete();\n }\n /** Returns the viewport's width and height. */\n getViewportSize() {\n if (!this._viewportSize) {\n this._updateViewportSize();\n }\n const output = { width: this._viewportSize.width, height: this._viewportSize.height };\n // If we're not on a browser, don't cache the size since it'll be mocked out anyway.\n if (!this._platform.isBrowser) {\n this._viewportSize = null;\n }\n return output;\n }\n /** Gets a ClientRect for the viewport's bounds. */\n getViewportRect() {\n // Use the document element's bounding rect rather than the window scroll properties\n // (e.g. pageYOffset, scrollY) due to in issue in Chrome and IE where window scroll\n // properties and client coordinates (boundingClientRect, clientX/Y, etc.) are in different\n // conceptual viewports. Under most circumstances these viewports are equivalent, but they\n // can disagree when the page is pinch-zoomed (on devices that support touch).\n // See https://bugs.chromium.org/p/chromium/issues/detail?id=489206#c4\n // We use the documentElement instead of the body because, by default (without a css reset)\n // browsers typically give the document body an 8px margin, which is not included in\n // getBoundingClientRect().\n const scrollPosition = this.getViewportScrollPosition();\n const { width, height } = this.getViewportSize();\n return {\n top: scrollPosition.top,\n left: scrollPosition.left,\n bottom: scrollPosition.top + height,\n right: scrollPosition.left + width,\n height,\n width,\n };\n }\n /** Gets the (top, left) scroll position of the viewport. */\n getViewportScrollPosition() {\n // While we can get a reference to the fake document\n // during SSR, it doesn't have getBoundingClientRect.\n if (!this._platform.isBrowser) {\n return { top: 0, left: 0 };\n }\n // The top-left-corner of the viewport is determined by the scroll position of the document\n // body, normally just (scrollLeft, scrollTop). However, Chrome and Firefox disagree about\n // whether `document.body` or `document.documentElement` is the scrolled element, so reading\n // `scrollTop` and `scrollLeft` is inconsistent. However, using the bounding rect of\n // `document.documentElement` works consistently, where the `top` and `left` values will\n // equal negative the scroll position.\n const document = this._document;\n const window = this._getWindow();\n const documentElement = document.documentElement;\n const documentRect = documentElement.getBoundingClientRect();\n const top = -documentRect.top ||\n document.body.scrollTop ||\n window.scrollY ||\n documentElement.scrollTop ||\n 0;\n const left = -documentRect.left ||\n document.body.scrollLeft ||\n window.scrollX ||\n documentElement.scrollLeft ||\n 0;\n return { top, left };\n }\n /**\n * Returns a stream that emits whenever the size of the viewport changes.\n * This stream emits outside of the Angular zone.\n * @param throttleTime Time in milliseconds to throttle the stream.\n */\n change(throttleTime = DEFAULT_RESIZE_TIME) {\n return throttleTime > 0 ? this._change.pipe(auditTime(throttleTime)) : this._change;\n }\n /** Use defaultView of injected document if available or fallback to global window reference */\n _getWindow() {\n return this._document.defaultView || window;\n }\n /** Updates the cached viewport size. */\n _updateViewportSize() {\n const window = this._getWindow();\n this._viewportSize = this._platform.isBrowser\n ? { width: window.innerWidth, height: window.innerHeight }\n : { width: 0, height: 0 };\n }\n}\nViewportRuler.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ViewportRuler, deps: [{ token: i1.Platform }, { token: i0.NgZone }, { token: DOCUMENT, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nViewportRuler.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ViewportRuler, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ViewportRuler, decorators: [{\n type: Injectable,\n args: [{ providedIn: 'root' }]\n }], ctorParameters: function () {\n return [{ type: i1.Platform }, { type: i0.NgZone }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [DOCUMENT]\n }] }];\n } });\n\n/** Checks if the given ranges are equal. */\nfunction rangesEqual(r1, r2) {\n return r1.start == r2.start && r1.end == r2.end;\n}\n/**\n * Scheduler to be used for scroll events. Needs to fall back to\n * something that doesn't rely on requestAnimationFrame on environments\n * that don't support it (e.g. server-side rendering).\n */\nconst SCROLL_SCHEDULER = typeof requestAnimationFrame !== 'undefined' ? animationFrameScheduler : asapScheduler;\n/** A viewport that virtualizes its scrolling with the help of `CdkVirtualForOf`. */\nclass CdkVirtualScrollViewport extends CdkScrollable {\n constructor(elementRef, _changeDetectorRef, ngZone, _scrollStrategy, dir, scrollDispatcher, viewportRuler) {\n super(elementRef, scrollDispatcher, ngZone, dir);\n this.elementRef = elementRef;\n this._changeDetectorRef = _changeDetectorRef;\n this._scrollStrategy = _scrollStrategy;\n /** Emits when the viewport is detached from a CdkVirtualForOf. */\n this._detachedSubject = new Subject();\n /** Emits when the rendered range changes. */\n this._renderedRangeSubject = new Subject();\n this._orientation = 'vertical';\n this._appendOnly = false;\n // Note: we don't use the typical EventEmitter here because we need to subscribe to the scroll\n // strategy lazily (i.e. only if the user is actually listening to the events). We do this because\n // depending on how the strategy calculates the scrolled index, it may come at a cost to\n // performance.\n /** Emits when the index of the first element visible in the viewport changes. */\n this.scrolledIndexChange = new Observable((observer) => this._scrollStrategy.scrolledIndexChange.subscribe(index => Promise.resolve().then(() => this.ngZone.run(() => observer.next(index)))));\n /** A stream that emits whenever the rendered range changes. */\n this.renderedRangeStream = this._renderedRangeSubject;\n /**\n * The total size of all content (in pixels), including content that is not currently rendered.\n */\n this._totalContentSize = 0;\n /** A string representing the `style.width` property value to be used for the spacer element. */\n this._totalContentWidth = '';\n /** A string representing the `style.height` property value to be used for the spacer element. */\n this._totalContentHeight = '';\n /** The currently rendered range of indices. */\n this._renderedRange = { start: 0, end: 0 };\n /** The length of the data bound to this viewport (in number of items). */\n this._dataLength = 0;\n /** The size of the viewport (in pixels). */\n this._viewportSize = 0;\n /** The last rendered content offset that was set. */\n this._renderedContentOffset = 0;\n /**\n * Whether the last rendered content offset was to the end of the content (and therefore needs to\n * be rewritten as an offset to the start of the content).\n */\n this._renderedContentOffsetNeedsRewrite = false;\n /** Whether there is a pending change detection cycle. */\n this._isChangeDetectionPending = false;\n /** A list of functions to run after the next change detection cycle. */\n this._runAfterChangeDetection = [];\n /** Subscription to changes in the viewport size. */\n this._viewportChanges = Subscription.EMPTY;\n if (!_scrollStrategy && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('Error: cdk-virtual-scroll-viewport requires the \"itemSize\" property to be set.');\n }\n this._viewportChanges = viewportRuler.change().subscribe(() => {\n this.checkViewportSize();\n });\n }\n /** The direction the viewport scrolls. */\n get orientation() {\n return this._orientation;\n }\n set orientation(orientation) {\n if (this._orientation !== orientation) {\n this._orientation = orientation;\n this._calculateSpacerSize();\n }\n }\n /**\n * Whether rendered items should persist in the DOM after scrolling out of view. By default, items\n * will be removed.\n */\n get appendOnly() {\n return this._appendOnly;\n }\n set appendOnly(value) {\n this._appendOnly = coerceBooleanProperty(value);\n }\n ngOnInit() {\n super.ngOnInit();\n // It's still too early to measure the viewport at this point. Deferring with a promise allows\n // the Viewport to be rendered with the correct size before we measure. We run this outside the\n // zone to avoid causing more change detection cycles. We handle the change detection loop\n // ourselves instead.\n this.ngZone.runOutsideAngular(() => Promise.resolve().then(() => {\n this._measureViewportSize();\n this._scrollStrategy.attach(this);\n this.elementScrolled()\n .pipe(\n // Start off with a fake scroll event so we properly detect our initial position.\n startWith(null), \n // Collect multiple events into one until the next animation frame. This way if\n // there are multiple scroll events in the same frame we only need to recheck\n // our layout once.\n auditTime(0, SCROLL_SCHEDULER))\n .subscribe(() => this._scrollStrategy.onContentScrolled());\n this._markChangeDetectionNeeded();\n }));\n }\n ngOnDestroy() {\n this.detach();\n this._scrollStrategy.detach();\n // Complete all subjects\n this._renderedRangeSubject.complete();\n this._detachedSubject.complete();\n this._viewportChanges.unsubscribe();\n super.ngOnDestroy();\n }\n /** Attaches a `CdkVirtualScrollRepeater` to this viewport. */\n attach(forOf) {\n if (this._forOf && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error('CdkVirtualScrollViewport is already attached.');\n }\n // Subscribe to the data stream of the CdkVirtualForOf to keep track of when the data length\n // changes. Run outside the zone to avoid triggering change detection, since we're managing the\n // change detection loop ourselves.\n this.ngZone.runOutsideAngular(() => {\n this._forOf = forOf;\n this._forOf.dataStream.pipe(takeUntil(this._detachedSubject)).subscribe(data => {\n const newLength = data.length;\n if (newLength !== this._dataLength) {\n this._dataLength = newLength;\n this._scrollStrategy.onDataLengthChanged();\n }\n this._doChangeDetection();\n });\n });\n }\n /** Detaches the current `CdkVirtualForOf`. */\n detach() {\n this._forOf = null;\n this._detachedSubject.next();\n }\n /** Gets the length of the data bound to this viewport (in number of items). */\n getDataLength() {\n return this._dataLength;\n }\n /** Gets the size of the viewport (in pixels). */\n getViewportSize() {\n return this._viewportSize;\n }\n // TODO(mmalerba): This is technically out of sync with what's really rendered until a render\n // cycle happens. I'm being careful to only call it after the render cycle is complete and before\n // setting it to something else, but its error prone and should probably be split into\n // `pendingRange` and `renderedRange`, the latter reflecting whats actually in the DOM.\n /** Get the current rendered range of items. */\n getRenderedRange() {\n return this._renderedRange;\n }\n /**\n * Sets the total size of all content (in pixels), including content that is not currently\n * rendered.\n */\n setTotalContentSize(size) {\n if (this._totalContentSize !== size) {\n this._totalContentSize = size;\n this._calculateSpacerSize();\n this._markChangeDetectionNeeded();\n }\n }\n /** Sets the currently rendered range of indices. */\n setRenderedRange(range) {\n if (!rangesEqual(this._renderedRange, range)) {\n if (this.appendOnly) {\n range = { start: 0, end: Math.max(this._renderedRange.end, range.end) };\n }\n this._renderedRangeSubject.next((this._renderedRange = range));\n this._markChangeDetectionNeeded(() => this._scrollStrategy.onContentRendered());\n }\n }\n /**\n * Gets the offset from the start of the viewport to the start of the rendered data (in pixels).\n */\n getOffsetToRenderedContentStart() {\n return this._renderedContentOffsetNeedsRewrite ? null : this._renderedContentOffset;\n }\n /**\n * Sets the offset from the start of the viewport to either the start or end of the rendered data\n * (in pixels).\n */\n setRenderedContentOffset(offset, to = 'to-start') {\n // For a horizontal viewport in a right-to-left language we need to translate along the x-axis\n // in the negative direction.\n const isRtl = this.dir && this.dir.value == 'rtl';\n const isHorizontal = this.orientation == 'horizontal';\n const axis = isHorizontal ? 'X' : 'Y';\n const axisDirection = isHorizontal && isRtl ? -1 : 1;\n let transform = `translate${axis}(${Number(axisDirection * offset)}px)`;\n // in appendOnly, we always start from the top\n offset = this.appendOnly && to === 'to-start' ? 0 : offset;\n this._renderedContentOffset = offset;\n if (to === 'to-end') {\n transform += ` translate${axis}(-100%)`;\n // The viewport should rewrite this as a `to-start` offset on the next render cycle. Otherwise\n // elements will appear to expand in the wrong direction (e.g. `mat-expansion-panel` would\n // expand upward).\n this._renderedContentOffsetNeedsRewrite = true;\n }\n if (this._renderedContentTransform != transform) {\n // We know this value is safe because we parse `offset` with `Number()` before passing it\n // into the string.\n this._renderedContentTransform = transform;\n this._markChangeDetectionNeeded(() => {\n if (this._renderedContentOffsetNeedsRewrite) {\n this._renderedContentOffset -= this.measureRenderedContentSize();\n this._renderedContentOffsetNeedsRewrite = false;\n this.setRenderedContentOffset(this._renderedContentOffset);\n }\n else {\n this._scrollStrategy.onRenderedOffsetChanged();\n }\n });\n }\n }\n /**\n * Scrolls to the given offset from the start of the viewport. Please note that this is not always\n * the same as setting `scrollTop` or `scrollLeft`. In a horizontal viewport with right-to-left\n * direction, this would be the equivalent of setting a fictional `scrollRight` property.\n * @param offset The offset to scroll to.\n * @param behavior The ScrollBehavior to use when scrolling. Default is behavior is `auto`.\n */\n scrollToOffset(offset, behavior = 'auto') {\n const options = { behavior };\n if (this.orientation === 'horizontal') {\n options.start = offset;\n }\n else {\n options.top = offset;\n }\n this.scrollTo(options);\n }\n /**\n * Scrolls to the offset for the given index.\n * @param index The index of the element to scroll to.\n * @param behavior The ScrollBehavior to use when scrolling. Default is behavior is `auto`.\n */\n scrollToIndex(index, behavior = 'auto') {\n this._scrollStrategy.scrollToIndex(index, behavior);\n }\n /**\n * Gets the current scroll offset from the start of the viewport (in pixels).\n * @param from The edge to measure the offset from. Defaults to 'top' in vertical mode and 'start'\n * in horizontal mode.\n */\n measureScrollOffset(from) {\n return from\n ? super.measureScrollOffset(from)\n : super.measureScrollOffset(this.orientation === 'horizontal' ? 'start' : 'top');\n }\n /** Measure the combined size of all of the rendered items. */\n measureRenderedContentSize() {\n const contentEl = this._contentWrapper.nativeElement;\n return this.orientation === 'horizontal' ? contentEl.offsetWidth : contentEl.offsetHeight;\n }\n /**\n * Measure the total combined size of the given range. Throws if the range includes items that are\n * not rendered.\n */\n measureRangeSize(range) {\n if (!this._forOf) {\n return 0;\n }\n return this._forOf.measureRangeSize(range, this.orientation);\n }\n /** Update the viewport dimensions and re-render. */\n checkViewportSize() {\n // TODO: Cleanup later when add logic for handling content resize\n this._measureViewportSize();\n this._scrollStrategy.onDataLengthChanged();\n }\n /** Measure the viewport size. */\n _measureViewportSize() {\n const viewportEl = this.elementRef.nativeElement;\n this._viewportSize =\n this.orientation === 'horizontal' ? viewportEl.clientWidth : viewportEl.clientHeight;\n }\n /** Queue up change detection to run. */\n _markChangeDetectionNeeded(runAfter) {\n if (runAfter) {\n this._runAfterChangeDetection.push(runAfter);\n }\n // Use a Promise to batch together calls to `_doChangeDetection`. This way if we set a bunch of\n // properties sequentially we only have to run `_doChangeDetection` once at the end.\n if (!this._isChangeDetectionPending) {\n this._isChangeDetectionPending = true;\n this.ngZone.runOutsideAngular(() => Promise.resolve().then(() => {\n this._doChangeDetection();\n }));\n }\n }\n /** Run change detection. */\n _doChangeDetection() {\n this._isChangeDetectionPending = false;\n // Apply the content transform. The transform can't be set via an Angular binding because\n // bypassSecurityTrustStyle is banned in Google. However the value is safe, it's composed of\n // string literals, a variable that can only be 'X' or 'Y', and user input that is run through\n // the `Number` function first to coerce it to a numeric value.\n this._contentWrapper.nativeElement.style.transform = this._renderedContentTransform;\n // Apply changes to Angular bindings. Note: We must call `markForCheck` to run change detection\n // from the root, since the repeated items are content projected in. Calling `detectChanges`\n // instead does not properly check the projected content.\n this.ngZone.run(() => this._changeDetectorRef.markForCheck());\n const runAfterChangeDetection = this._runAfterChangeDetection;\n this._runAfterChangeDetection = [];\n for (const fn of runAfterChangeDetection) {\n fn();\n }\n }\n /** Calculates the `style.width` and `style.height` for the spacer element. */\n _calculateSpacerSize() {\n this._totalContentHeight =\n this.orientation === 'horizontal' ? '' : `${this._totalContentSize}px`;\n this._totalContentWidth =\n this.orientation === 'horizontal' ? `${this._totalContentSize}px` : '';\n }\n}\nCdkVirtualScrollViewport.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkVirtualScrollViewport, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: i0.NgZone }, { token: VIRTUAL_SCROLL_STRATEGY, optional: true }, { token: i2.Directionality, optional: true }, { token: ScrollDispatcher }, { token: ViewportRuler }], target: i0.ɵɵFactoryTarget.Component });\nCdkVirtualScrollViewport.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"12.0.0\", version: \"13.3.0\", type: CdkVirtualScrollViewport, selector: \"cdk-virtual-scroll-viewport\", inputs: { orientation: \"orientation\", appendOnly: \"appendOnly\" }, outputs: { scrolledIndexChange: \"scrolledIndexChange\" }, host: { properties: { \"class.cdk-virtual-scroll-orientation-horizontal\": \"orientation === \\\"horizontal\\\"\", \"class.cdk-virtual-scroll-orientation-vertical\": \"orientation !== \\\"horizontal\\\"\" }, classAttribute: \"cdk-virtual-scroll-viewport\" }, providers: [\n {\n provide: CdkScrollable,\n useExisting: CdkVirtualScrollViewport,\n },\n ], viewQueries: [{ propertyName: \"_contentWrapper\", first: true, predicate: [\"contentWrapper\"], descendants: true, static: true }], usesInheritance: true, ngImport: i0, template: \"\\n
\\n \\n
\\n\\n
\\n\", styles: [\"cdk-virtual-scroll-viewport{display:block;position:relative;overflow:auto;contain:strict;transform:translateZ(0);will-change:scroll-position;-webkit-overflow-scrolling:touch}.cdk-virtual-scroll-content-wrapper{position:absolute;top:0;left:0;contain:content}[dir=rtl] .cdk-virtual-scroll-content-wrapper{right:0;left:auto}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper{min-height:100%}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-left:0;padding-right:0;margin-left:0;margin-right:0;border-left-width:0;border-right-width:0;outline:none}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper{min-width:100%}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-top:0;padding-bottom:0;margin-top:0;margin-bottom:0;border-top-width:0;border-bottom-width:0;outline:none}.cdk-virtual-scroll-spacer{position:absolute;top:0;left:0;height:1px;width:1px;transform-origin:0 0}[dir=rtl] .cdk-virtual-scroll-spacer{right:0;left:auto;transform-origin:100% 0}\\n\"], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkVirtualScrollViewport, decorators: [{\n type: Component,\n args: [{ selector: 'cdk-virtual-scroll-viewport', host: {\n 'class': 'cdk-virtual-scroll-viewport',\n '[class.cdk-virtual-scroll-orientation-horizontal]': 'orientation === \"horizontal\"',\n '[class.cdk-virtual-scroll-orientation-vertical]': 'orientation !== \"horizontal\"',\n }, encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, providers: [\n {\n provide: CdkScrollable,\n useExisting: CdkVirtualScrollViewport,\n },\n ], template: \"\\n
\\n \\n
\\n\\n
\\n\", styles: [\"cdk-virtual-scroll-viewport{display:block;position:relative;overflow:auto;contain:strict;transform:translateZ(0);will-change:scroll-position;-webkit-overflow-scrolling:touch}.cdk-virtual-scroll-content-wrapper{position:absolute;top:0;left:0;contain:content}[dir=rtl] .cdk-virtual-scroll-content-wrapper{right:0;left:auto}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper{min-height:100%}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-left:0;padding-right:0;margin-left:0;margin-right:0;border-left-width:0;border-right-width:0;outline:none}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper{min-width:100%}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-top:0;padding-bottom:0;margin-top:0;margin-bottom:0;border-top-width:0;border-bottom-width:0;outline:none}.cdk-virtual-scroll-spacer{position:absolute;top:0;left:0;height:1px;width:1px;transform-origin:0 0}[dir=rtl] .cdk-virtual-scroll-spacer{right:0;left:auto;transform-origin:100% 0}\\n\"] }]\n }], ctorParameters: function () {\n return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: i0.NgZone }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [VIRTUAL_SCROLL_STRATEGY]\n }] }, { type: i2.Directionality, decorators: [{\n type: Optional\n }] }, { type: ScrollDispatcher }, { type: ViewportRuler }];\n }, propDecorators: { orientation: [{\n type: Input\n }], appendOnly: [{\n type: Input\n }], scrolledIndexChange: [{\n type: Output\n }], _contentWrapper: [{\n type: ViewChild,\n args: ['contentWrapper', { static: true }]\n }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Helper to extract the offset of a DOM Node in a certain direction. */\nfunction getOffset(orientation, direction, node) {\n const el = node;\n if (!el.getBoundingClientRect) {\n return 0;\n }\n const rect = el.getBoundingClientRect();\n if (orientation === 'horizontal') {\n return direction === 'start' ? rect.left : rect.right;\n }\n return direction === 'start' ? rect.top : rect.bottom;\n}\n/**\n * A directive similar to `ngForOf` to be used for rendering data inside a virtual scrolling\n * container.\n */\nclass CdkVirtualForOf {\n constructor(\n /** The view container to add items to. */\n _viewContainerRef, \n /** The template to use when stamping out new items. */\n _template, \n /** The set of available differs. */\n _differs, \n /** The strategy used to render items in the virtual scroll viewport. */\n _viewRepeater, \n /** The virtual scrolling viewport that these items are being rendered in. */\n _viewport, ngZone) {\n this._viewContainerRef = _viewContainerRef;\n this._template = _template;\n this._differs = _differs;\n this._viewRepeater = _viewRepeater;\n this._viewport = _viewport;\n /** Emits when the rendered view of the data changes. */\n this.viewChange = new Subject();\n /** Subject that emits when a new DataSource instance is given. */\n this._dataSourceChanges = new Subject();\n /** Emits whenever the data in the current DataSource changes. */\n this.dataStream = this._dataSourceChanges.pipe(\n // Start off with null `DataSource`.\n startWith(null), \n // Bundle up the previous and current data sources so we can work with both.\n pairwise(), \n // Use `_changeDataSource` to disconnect from the previous data source and connect to the\n // new one, passing back a stream of data changes which we run through `switchMap` to give\n // us a data stream that emits the latest data from whatever the current `DataSource` is.\n switchMap(([prev, cur]) => this._changeDataSource(prev, cur)), \n // Replay the last emitted data when someone subscribes.\n shareReplay(1));\n /** The differ used to calculate changes to the data. */\n this._differ = null;\n /** Whether the rendered data should be updated during the next ngDoCheck cycle. */\n this._needsUpdate = false;\n this._destroyed = new Subject();\n this.dataStream.subscribe(data => {\n this._data = data;\n this._onRenderedDataChange();\n });\n this._viewport.renderedRangeStream.pipe(takeUntil(this._destroyed)).subscribe(range => {\n this._renderedRange = range;\n if (this.viewChange.observers.length) {\n ngZone.run(() => this.viewChange.next(this._renderedRange));\n }\n this._onRenderedDataChange();\n });\n this._viewport.attach(this);\n }\n /** The DataSource to display. */\n get cdkVirtualForOf() {\n return this._cdkVirtualForOf;\n }\n set cdkVirtualForOf(value) {\n this._cdkVirtualForOf = value;\n if (isDataSource(value)) {\n this._dataSourceChanges.next(value);\n }\n else {\n // If value is an an NgIterable, convert it to an array.\n this._dataSourceChanges.next(new ArrayDataSource(isObservable(value) ? value : Array.from(value || [])));\n }\n }\n /**\n * The `TrackByFunction` to use for tracking changes. The `TrackByFunction` takes the index and\n * the item and produces a value to be used as the item's identity when tracking changes.\n */\n get cdkVirtualForTrackBy() {\n return this._cdkVirtualForTrackBy;\n }\n set cdkVirtualForTrackBy(fn) {\n this._needsUpdate = true;\n this._cdkVirtualForTrackBy = fn\n ? (index, item) => fn(index + (this._renderedRange ? this._renderedRange.start : 0), item)\n : undefined;\n }\n /** The template used to stamp out new elements. */\n set cdkVirtualForTemplate(value) {\n if (value) {\n this._needsUpdate = true;\n this._template = value;\n }\n }\n /**\n * The size of the cache used to store templates that are not being used for re-use later.\n * Setting the cache size to `0` will disable caching. Defaults to 20 templates.\n */\n get cdkVirtualForTemplateCacheSize() {\n return this._viewRepeater.viewCacheSize;\n }\n set cdkVirtualForTemplateCacheSize(size) {\n this._viewRepeater.viewCacheSize = coerceNumberProperty(size);\n }\n /**\n * Measures the combined size (width for horizontal orientation, height for vertical) of all items\n * in the specified range. Throws an error if the range includes items that are not currently\n * rendered.\n */\n measureRangeSize(range, orientation) {\n if (range.start >= range.end) {\n return 0;\n }\n if ((range.start < this._renderedRange.start || range.end > this._renderedRange.end) &&\n (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw Error(`Error: attempted to measure an item that isn't rendered.`);\n }\n // The index into the list of rendered views for the first item in the range.\n const renderedStartIndex = range.start - this._renderedRange.start;\n // The length of the range we're measuring.\n const rangeLen = range.end - range.start;\n // Loop over all the views, find the first and land node and compute the size by subtracting\n // the top of the first node from the bottom of the last one.\n let firstNode;\n let lastNode;\n // Find the first node by starting from the beginning and going forwards.\n for (let i = 0; i < rangeLen; i++) {\n const view = this._viewContainerRef.get(i + renderedStartIndex);\n if (view && view.rootNodes.length) {\n firstNode = lastNode = view.rootNodes[0];\n break;\n }\n }\n // Find the last node by starting from the end and going backwards.\n for (let i = rangeLen - 1; i > -1; i--) {\n const view = this._viewContainerRef.get(i + renderedStartIndex);\n if (view && view.rootNodes.length) {\n lastNode = view.rootNodes[view.rootNodes.length - 1];\n break;\n }\n }\n return firstNode && lastNode\n ? getOffset(orientation, 'end', lastNode) - getOffset(orientation, 'start', firstNode)\n : 0;\n }\n ngDoCheck() {\n if (this._differ && this._needsUpdate) {\n // TODO(mmalerba): We should differentiate needs update due to scrolling and a new portion of\n // this list being rendered (can use simpler algorithm) vs needs update due to data actually\n // changing (need to do this diff).\n const changes = this._differ.diff(this._renderedItems);\n if (!changes) {\n this._updateContext();\n }\n else {\n this._applyChanges(changes);\n }\n this._needsUpdate = false;\n }\n }\n ngOnDestroy() {\n this._viewport.detach();\n this._dataSourceChanges.next(undefined);\n this._dataSourceChanges.complete();\n this.viewChange.complete();\n this._destroyed.next();\n this._destroyed.complete();\n this._viewRepeater.detach();\n }\n /** React to scroll state changes in the viewport. */\n _onRenderedDataChange() {\n if (!this._renderedRange) {\n return;\n }\n this._renderedItems = this._data.slice(this._renderedRange.start, this._renderedRange.end);\n if (!this._differ) {\n // Use a wrapper function for the `trackBy` so any new values are\n // picked up automatically without having to recreate the differ.\n this._differ = this._differs.find(this._renderedItems).create((index, item) => {\n return this.cdkVirtualForTrackBy ? this.cdkVirtualForTrackBy(index, item) : item;\n });\n }\n this._needsUpdate = true;\n }\n /** Swap out one `DataSource` for another. */\n _changeDataSource(oldDs, newDs) {\n if (oldDs) {\n oldDs.disconnect(this);\n }\n this._needsUpdate = true;\n return newDs ? newDs.connect(this) : of();\n }\n /** Update the `CdkVirtualForOfContext` for all views. */\n _updateContext() {\n const count = this._data.length;\n let i = this._viewContainerRef.length;\n while (i--) {\n const view = this._viewContainerRef.get(i);\n view.context.index = this._renderedRange.start + i;\n view.context.count = count;\n this._updateComputedContextProperties(view.context);\n view.detectChanges();\n }\n }\n /** Apply changes to the DOM. */\n _applyChanges(changes) {\n this._viewRepeater.applyChanges(changes, this._viewContainerRef, (record, _adjustedPreviousIndex, currentIndex) => this._getEmbeddedViewArgs(record, currentIndex), record => record.item);\n // Update $implicit for any items that had an identity change.\n changes.forEachIdentityChange((record) => {\n const view = this._viewContainerRef.get(record.currentIndex);\n view.context.$implicit = record.item;\n });\n // Update the context variables on all items.\n const count = this._data.length;\n let i = this._viewContainerRef.length;\n while (i--) {\n const view = this._viewContainerRef.get(i);\n view.context.index = this._renderedRange.start + i;\n view.context.count = count;\n this._updateComputedContextProperties(view.context);\n }\n }\n /** Update the computed properties on the `CdkVirtualForOfContext`. */\n _updateComputedContextProperties(context) {\n context.first = context.index === 0;\n context.last = context.index === context.count - 1;\n context.even = context.index % 2 === 0;\n context.odd = !context.even;\n }\n _getEmbeddedViewArgs(record, index) {\n // Note that it's important that we insert the item directly at the proper index,\n // rather than inserting it and the moving it in place, because if there's a directive\n // on the same node that injects the `ViewContainerRef`, Angular will insert another\n // comment node which can throw off the move when it's being repeated for all items.\n return {\n templateRef: this._template,\n context: {\n $implicit: record.item,\n // It's guaranteed that the iterable is not \"undefined\" or \"null\" because we only\n // generate views for elements if the \"cdkVirtualForOf\" iterable has elements.\n cdkVirtualForOf: this._cdkVirtualForOf,\n index: -1,\n count: -1,\n first: false,\n last: false,\n odd: false,\n even: false,\n },\n index,\n };\n }\n}\nCdkVirtualForOf.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkVirtualForOf, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: i0.IterableDiffers }, { token: _VIEW_REPEATER_STRATEGY }, { token: CdkVirtualScrollViewport, skipSelf: true }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Directive });\nCdkVirtualForOf.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"12.0.0\", version: \"13.3.0\", type: CdkVirtualForOf, selector: \"[cdkVirtualFor][cdkVirtualForOf]\", inputs: { cdkVirtualForOf: \"cdkVirtualForOf\", cdkVirtualForTrackBy: \"cdkVirtualForTrackBy\", cdkVirtualForTemplate: \"cdkVirtualForTemplate\", cdkVirtualForTemplateCacheSize: \"cdkVirtualForTemplateCacheSize\" }, providers: [{ provide: _VIEW_REPEATER_STRATEGY, useClass: _RecycleViewRepeaterStrategy }], ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkVirtualForOf, decorators: [{\n type: Directive,\n args: [{\n selector: '[cdkVirtualFor][cdkVirtualForOf]',\n providers: [{ provide: _VIEW_REPEATER_STRATEGY, useClass: _RecycleViewRepeaterStrategy }],\n }]\n }], ctorParameters: function () {\n return [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: i0.IterableDiffers }, { type: i2$1._RecycleViewRepeaterStrategy, decorators: [{\n type: Inject,\n args: [_VIEW_REPEATER_STRATEGY]\n }] }, { type: CdkVirtualScrollViewport, decorators: [{\n type: SkipSelf\n }] }, { type: i0.NgZone }];\n }, propDecorators: { cdkVirtualForOf: [{\n type: Input\n }], cdkVirtualForTrackBy: [{\n type: Input\n }], cdkVirtualForTemplate: [{\n type: Input\n }], cdkVirtualForTemplateCacheSize: [{\n type: Input\n }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass CdkScrollableModule {\n}\nCdkScrollableModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkScrollableModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nCdkScrollableModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkScrollableModule, declarations: [CdkScrollable], exports: [CdkScrollable] });\nCdkScrollableModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkScrollableModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: CdkScrollableModule, decorators: [{\n type: NgModule,\n args: [{\n exports: [CdkScrollable],\n declarations: [CdkScrollable],\n }]\n }] });\n/**\n * @docs-primary-export\n */\nclass ScrollingModule {\n}\nScrollingModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollingModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nScrollingModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollingModule, declarations: [CdkFixedSizeVirtualScroll, CdkVirtualForOf, CdkVirtualScrollViewport], imports: [BidiModule, CdkScrollableModule], exports: [BidiModule, CdkScrollableModule, CdkFixedSizeVirtualScroll,\n CdkVirtualForOf,\n CdkVirtualScrollViewport] });\nScrollingModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollingModule, imports: [[BidiModule, CdkScrollableModule], BidiModule, CdkScrollableModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: ScrollingModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [BidiModule, CdkScrollableModule],\n exports: [\n BidiModule,\n CdkScrollableModule,\n CdkFixedSizeVirtualScroll,\n CdkVirtualForOf,\n CdkVirtualScrollViewport,\n ],\n declarations: [CdkFixedSizeVirtualScroll, CdkVirtualForOf, CdkVirtualScrollViewport],\n }]\n }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { CdkFixedSizeVirtualScroll, CdkScrollable, CdkScrollableModule, CdkVirtualForOf, CdkVirtualScrollViewport, DEFAULT_RESIZE_TIME, DEFAULT_SCROLL_TIME, FixedSizeVirtualScrollStrategy, ScrollDispatcher, ScrollingModule, VIRTUAL_SCROLL_STRATEGY, ViewportRuler, _fixedSizeVirtualScrollStrategyFactory };\n","import * as i0 from '@angular/core';\nimport { Component, ViewEncapsulation, ChangeDetectionStrategy, Optional, Inject, ViewChild, Input, NgModule } from '@angular/core';\nimport * as i2 from '@angular/material/core';\nimport { mixinColor, mixinDisabled, mixinDisableRipple, MatRipple, MatRippleModule, MatCommonModule } from '@angular/material/core';\nimport { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';\nimport * as i1 from '@angular/cdk/a11y';\n\n/** Default color palette for round buttons (mat-fab and mat-mini-fab) */\nconst DEFAULT_ROUND_BUTTON_COLOR = 'accent';\n/**\n * List of classes to add to MatButton instances based on host attributes to\n * style as different variants.\n */\nconst BUTTON_HOST_ATTRIBUTES = [\n 'mat-button',\n 'mat-flat-button',\n 'mat-icon-button',\n 'mat-raised-button',\n 'mat-stroked-button',\n 'mat-mini-fab',\n 'mat-fab',\n];\n// Boilerplate for applying mixins to MatButton.\nconst _MatButtonBase = mixinColor(mixinDisabled(mixinDisableRipple(class {\n constructor(_elementRef) {\n this._elementRef = _elementRef;\n }\n})));\n/**\n * Material design button.\n */\nclass MatButton extends _MatButtonBase {\n constructor(elementRef, _focusMonitor, _animationMode) {\n super(elementRef);\n this._focusMonitor = _focusMonitor;\n this._animationMode = _animationMode;\n /** Whether the button is round. */\n this.isRoundButton = this._hasHostAttributes('mat-fab', 'mat-mini-fab');\n /** Whether the button is icon button. */\n this.isIconButton = this._hasHostAttributes('mat-icon-button');\n // For each of the variant selectors that is present in the button's host\n // attributes, add the correct corresponding class.\n for (const attr of BUTTON_HOST_ATTRIBUTES) {\n if (this._hasHostAttributes(attr)) {\n this._getHostElement().classList.add(attr);\n }\n }\n // Add a class that applies to all buttons. This makes it easier to target if somebody\n // wants to target all Material buttons. We do it here rather than `host` to ensure that\n // the class is applied to derived classes.\n elementRef.nativeElement.classList.add('mat-button-base');\n if (this.isRoundButton) {\n this.color = DEFAULT_ROUND_BUTTON_COLOR;\n }\n }\n ngAfterViewInit() {\n this._focusMonitor.monitor(this._elementRef, true);\n }\n ngOnDestroy() {\n this._focusMonitor.stopMonitoring(this._elementRef);\n }\n /** Focuses the button. */\n focus(origin, options) {\n if (origin) {\n this._focusMonitor.focusVia(this._getHostElement(), origin, options);\n }\n else {\n this._getHostElement().focus(options);\n }\n }\n _getHostElement() {\n return this._elementRef.nativeElement;\n }\n _isRippleDisabled() {\n return this.disableRipple || this.disabled;\n }\n /** Gets whether the button has one of the given attributes. */\n _hasHostAttributes(...attributes) {\n return attributes.some(attribute => this._getHostElement().hasAttribute(attribute));\n }\n}\nMatButton.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatButton, deps: [{ token: i0.ElementRef }, { token: i1.FocusMonitor }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Component });\nMatButton.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"12.0.0\", version: \"13.3.0\", type: MatButton, selector: \"button[mat-button], button[mat-raised-button], button[mat-icon-button],\\n button[mat-fab], button[mat-mini-fab], button[mat-stroked-button],\\n button[mat-flat-button]\", inputs: { disabled: \"disabled\", disableRipple: \"disableRipple\", color: \"color\" }, host: { properties: { \"attr.disabled\": \"disabled || null\", \"class._mat-animation-noopable\": \"_animationMode === \\\"NoopAnimations\\\"\", \"class.mat-button-disabled\": \"disabled\" }, classAttribute: \"mat-focus-indicator\" }, viewQueries: [{ propertyName: \"ripple\", first: true, predicate: MatRipple, descendants: true }], exportAs: [\"matButton\"], usesInheritance: true, ngImport: i0, template: \"
\\n
\\n
\\n\", styles: [\".mat-button .mat-button-focus-overlay,.mat-icon-button .mat-button-focus-overlay{opacity:0}.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:.04}@media(hover: none){.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:0}}.mat-button,.mat-icon-button,.mat-stroked-button,.mat-flat-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-button.mat-button-disabled,.mat-icon-button.mat-button-disabled,.mat-stroked-button.mat-button-disabled,.mat-flat-button.mat-button-disabled{cursor:default}.mat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-button.cdk-program-focused .mat-button-focus-overlay,.mat-icon-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-icon-button.cdk-program-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-program-focused .mat-button-focus-overlay,.mat-flat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-flat-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-raised-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-raised-button::-moz-focus-inner{border:0}.mat-raised-button.mat-button-disabled{cursor:default}.mat-raised-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-raised-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-raised-button::-moz-focus-inner{border:0}._mat-animation-noopable.mat-raised-button{transition:none;animation:none}.mat-stroked-button{border:1px solid currentColor;padding:0 15px;line-height:34px}.mat-stroked-button .mat-button-ripple.mat-ripple,.mat-stroked-button .mat-button-focus-overlay{top:-1px;left:-1px;right:-1px;bottom:-1px}.mat-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:56px;height:56px;padding:0;flex-shrink:0}.mat-fab::-moz-focus-inner{border:0}.mat-fab.mat-button-disabled{cursor:default}.mat-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-fab{transition:none;animation:none}.mat-fab .mat-button-wrapper{padding:16px 0;display:inline-block;line-height:24px}.mat-mini-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:40px;height:40px;padding:0;flex-shrink:0}.mat-mini-fab::-moz-focus-inner{border:0}.mat-mini-fab.mat-button-disabled{cursor:default}.mat-mini-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-mini-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-mini-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-mini-fab{transition:none;animation:none}.mat-mini-fab .mat-button-wrapper{padding:8px 0;display:inline-block;line-height:24px}.mat-icon-button{padding:0;min-width:0;width:40px;height:40px;flex-shrink:0;line-height:40px;border-radius:50%}.mat-icon-button i,.mat-icon-button .mat-icon{line-height:24px}.mat-button-ripple.mat-ripple,.mat-button-focus-overlay{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none;border-radius:inherit}.mat-button-ripple.mat-ripple:not(:empty){transform:translateZ(0)}.mat-button-focus-overlay{opacity:0;transition:opacity 200ms cubic-bezier(0.35, 0, 0.25, 1),background-color 200ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-button-focus-overlay{transition:none}.mat-button-ripple-round{border-radius:50%;z-index:1}.mat-button .mat-button-wrapper>*,.mat-flat-button .mat-button-wrapper>*,.mat-stroked-button .mat-button-wrapper>*,.mat-raised-button .mat-button-wrapper>*,.mat-icon-button .mat-button-wrapper>*,.mat-fab .mat-button-wrapper>*,.mat-mini-fab .mat-button-wrapper>*{vertical-align:middle}.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-prefix .mat-icon-button,.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-suffix .mat-icon-button{display:inline-flex;justify-content:center;align-items:center;font-size:inherit;width:2.5em;height:2.5em}.cdk-high-contrast-active .mat-button,.cdk-high-contrast-active .mat-flat-button,.cdk-high-contrast-active .mat-raised-button,.cdk-high-contrast-active .mat-icon-button,.cdk-high-contrast-active .mat-fab,.cdk-high-contrast-active .mat-mini-fab{outline:solid 1px}.cdk-high-contrast-active .mat-button-base.cdk-keyboard-focused,.cdk-high-contrast-active .mat-button-base.cdk-program-focused{outline:solid 3px}\\n\"], directives: [{ type: i2.MatRipple, selector: \"[mat-ripple], [matRipple]\", inputs: [\"matRippleColor\", \"matRippleUnbounded\", \"matRippleCentered\", \"matRippleRadius\", \"matRippleAnimation\", \"matRippleDisabled\", \"matRippleTrigger\"], exportAs: [\"matRipple\"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatButton, decorators: [{\n type: Component,\n args: [{ selector: `button[mat-button], button[mat-raised-button], button[mat-icon-button],\n button[mat-fab], button[mat-mini-fab], button[mat-stroked-button],\n button[mat-flat-button]`, exportAs: 'matButton', host: {\n '[attr.disabled]': 'disabled || null',\n '[class._mat-animation-noopable]': '_animationMode === \"NoopAnimations\"',\n // Add a class for disabled button styling instead of the using attribute\n // selector or pseudo-selector. This allows users to create focusabled\n // disabled buttons without recreating the styles.\n '[class.mat-button-disabled]': 'disabled',\n 'class': 'mat-focus-indicator',\n }, inputs: ['disabled', 'disableRipple', 'color'], encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, template: \"
\\n
\\n
\\n\", styles: [\".mat-button .mat-button-focus-overlay,.mat-icon-button .mat-button-focus-overlay{opacity:0}.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:.04}@media(hover: none){.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:0}}.mat-button,.mat-icon-button,.mat-stroked-button,.mat-flat-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-button.mat-button-disabled,.mat-icon-button.mat-button-disabled,.mat-stroked-button.mat-button-disabled,.mat-flat-button.mat-button-disabled{cursor:default}.mat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-button.cdk-program-focused .mat-button-focus-overlay,.mat-icon-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-icon-button.cdk-program-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-program-focused .mat-button-focus-overlay,.mat-flat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-flat-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-raised-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-raised-button::-moz-focus-inner{border:0}.mat-raised-button.mat-button-disabled{cursor:default}.mat-raised-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-raised-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-raised-button::-moz-focus-inner{border:0}._mat-animation-noopable.mat-raised-button{transition:none;animation:none}.mat-stroked-button{border:1px solid currentColor;padding:0 15px;line-height:34px}.mat-stroked-button .mat-button-ripple.mat-ripple,.mat-stroked-button .mat-button-focus-overlay{top:-1px;left:-1px;right:-1px;bottom:-1px}.mat-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:56px;height:56px;padding:0;flex-shrink:0}.mat-fab::-moz-focus-inner{border:0}.mat-fab.mat-button-disabled{cursor:default}.mat-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-fab{transition:none;animation:none}.mat-fab .mat-button-wrapper{padding:16px 0;display:inline-block;line-height:24px}.mat-mini-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:40px;height:40px;padding:0;flex-shrink:0}.mat-mini-fab::-moz-focus-inner{border:0}.mat-mini-fab.mat-button-disabled{cursor:default}.mat-mini-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-mini-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-mini-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-mini-fab{transition:none;animation:none}.mat-mini-fab .mat-button-wrapper{padding:8px 0;display:inline-block;line-height:24px}.mat-icon-button{padding:0;min-width:0;width:40px;height:40px;flex-shrink:0;line-height:40px;border-radius:50%}.mat-icon-button i,.mat-icon-button .mat-icon{line-height:24px}.mat-button-ripple.mat-ripple,.mat-button-focus-overlay{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none;border-radius:inherit}.mat-button-ripple.mat-ripple:not(:empty){transform:translateZ(0)}.mat-button-focus-overlay{opacity:0;transition:opacity 200ms cubic-bezier(0.35, 0, 0.25, 1),background-color 200ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-button-focus-overlay{transition:none}.mat-button-ripple-round{border-radius:50%;z-index:1}.mat-button .mat-button-wrapper>*,.mat-flat-button .mat-button-wrapper>*,.mat-stroked-button .mat-button-wrapper>*,.mat-raised-button .mat-button-wrapper>*,.mat-icon-button .mat-button-wrapper>*,.mat-fab .mat-button-wrapper>*,.mat-mini-fab .mat-button-wrapper>*{vertical-align:middle}.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-prefix .mat-icon-button,.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-suffix .mat-icon-button{display:inline-flex;justify-content:center;align-items:center;font-size:inherit;width:2.5em;height:2.5em}.cdk-high-contrast-active .mat-button,.cdk-high-contrast-active .mat-flat-button,.cdk-high-contrast-active .mat-raised-button,.cdk-high-contrast-active .mat-icon-button,.cdk-high-contrast-active .mat-fab,.cdk-high-contrast-active .mat-mini-fab{outline:solid 1px}.cdk-high-contrast-active .mat-button-base.cdk-keyboard-focused,.cdk-high-contrast-active .mat-button-base.cdk-program-focused{outline:solid 3px}\\n\"] }]\n }], ctorParameters: function () {\n return [{ type: i0.ElementRef }, { type: i1.FocusMonitor }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [ANIMATION_MODULE_TYPE]\n }] }];\n }, propDecorators: { ripple: [{\n type: ViewChild,\n args: [MatRipple]\n }] } });\n/**\n * Material design anchor button.\n */\nclass MatAnchor extends MatButton {\n constructor(focusMonitor, elementRef, animationMode, \n /** @breaking-change 14.0.0 _ngZone will be required. */\n _ngZone) {\n super(elementRef, focusMonitor, animationMode);\n this._ngZone = _ngZone;\n this._haltDisabledEvents = (event) => {\n // A disabled button shouldn't apply any actions\n if (this.disabled) {\n event.preventDefault();\n event.stopImmediatePropagation();\n }\n };\n }\n ngAfterViewInit() {\n super.ngAfterViewInit();\n /** @breaking-change 14.0.0 _ngZone will be required. */\n if (this._ngZone) {\n this._ngZone.runOutsideAngular(() => {\n this._elementRef.nativeElement.addEventListener('click', this._haltDisabledEvents);\n });\n }\n else {\n this._elementRef.nativeElement.addEventListener('click', this._haltDisabledEvents);\n }\n }\n ngOnDestroy() {\n super.ngOnDestroy();\n this._elementRef.nativeElement.removeEventListener('click', this._haltDisabledEvents);\n }\n}\nMatAnchor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatAnchor, deps: [{ token: i1.FocusMonitor }, { token: i0.ElementRef }, { token: ANIMATION_MODULE_TYPE, optional: true }, { token: i0.NgZone, optional: true }], target: i0.ɵɵFactoryTarget.Component });\nMatAnchor.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"12.0.0\", version: \"13.3.0\", type: MatAnchor, selector: \"a[mat-button], a[mat-raised-button], a[mat-icon-button], a[mat-fab],\\n a[mat-mini-fab], a[mat-stroked-button], a[mat-flat-button]\", inputs: { disabled: \"disabled\", disableRipple: \"disableRipple\", color: \"color\", tabIndex: \"tabIndex\" }, host: { properties: { \"attr.tabindex\": \"disabled ? -1 : tabIndex\", \"attr.disabled\": \"disabled || null\", \"attr.aria-disabled\": \"disabled.toString()\", \"class._mat-animation-noopable\": \"_animationMode === \\\"NoopAnimations\\\"\", \"class.mat-button-disabled\": \"disabled\" }, classAttribute: \"mat-focus-indicator\" }, exportAs: [\"matButton\", \"matAnchor\"], usesInheritance: true, ngImport: i0, template: \"
\\n
\\n
\\n\", styles: [\".mat-button .mat-button-focus-overlay,.mat-icon-button .mat-button-focus-overlay{opacity:0}.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:.04}@media(hover: none){.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:0}}.mat-button,.mat-icon-button,.mat-stroked-button,.mat-flat-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-button.mat-button-disabled,.mat-icon-button.mat-button-disabled,.mat-stroked-button.mat-button-disabled,.mat-flat-button.mat-button-disabled{cursor:default}.mat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-button.cdk-program-focused .mat-button-focus-overlay,.mat-icon-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-icon-button.cdk-program-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-program-focused .mat-button-focus-overlay,.mat-flat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-flat-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-raised-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-raised-button::-moz-focus-inner{border:0}.mat-raised-button.mat-button-disabled{cursor:default}.mat-raised-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-raised-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-raised-button::-moz-focus-inner{border:0}._mat-animation-noopable.mat-raised-button{transition:none;animation:none}.mat-stroked-button{border:1px solid currentColor;padding:0 15px;line-height:34px}.mat-stroked-button .mat-button-ripple.mat-ripple,.mat-stroked-button .mat-button-focus-overlay{top:-1px;left:-1px;right:-1px;bottom:-1px}.mat-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:56px;height:56px;padding:0;flex-shrink:0}.mat-fab::-moz-focus-inner{border:0}.mat-fab.mat-button-disabled{cursor:default}.mat-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-fab{transition:none;animation:none}.mat-fab .mat-button-wrapper{padding:16px 0;display:inline-block;line-height:24px}.mat-mini-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:40px;height:40px;padding:0;flex-shrink:0}.mat-mini-fab::-moz-focus-inner{border:0}.mat-mini-fab.mat-button-disabled{cursor:default}.mat-mini-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-mini-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-mini-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-mini-fab{transition:none;animation:none}.mat-mini-fab .mat-button-wrapper{padding:8px 0;display:inline-block;line-height:24px}.mat-icon-button{padding:0;min-width:0;width:40px;height:40px;flex-shrink:0;line-height:40px;border-radius:50%}.mat-icon-button i,.mat-icon-button .mat-icon{line-height:24px}.mat-button-ripple.mat-ripple,.mat-button-focus-overlay{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none;border-radius:inherit}.mat-button-ripple.mat-ripple:not(:empty){transform:translateZ(0)}.mat-button-focus-overlay{opacity:0;transition:opacity 200ms cubic-bezier(0.35, 0, 0.25, 1),background-color 200ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-button-focus-overlay{transition:none}.mat-button-ripple-round{border-radius:50%;z-index:1}.mat-button .mat-button-wrapper>*,.mat-flat-button .mat-button-wrapper>*,.mat-stroked-button .mat-button-wrapper>*,.mat-raised-button .mat-button-wrapper>*,.mat-icon-button .mat-button-wrapper>*,.mat-fab .mat-button-wrapper>*,.mat-mini-fab .mat-button-wrapper>*{vertical-align:middle}.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-prefix .mat-icon-button,.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-suffix .mat-icon-button{display:inline-flex;justify-content:center;align-items:center;font-size:inherit;width:2.5em;height:2.5em}.cdk-high-contrast-active .mat-button,.cdk-high-contrast-active .mat-flat-button,.cdk-high-contrast-active .mat-raised-button,.cdk-high-contrast-active .mat-icon-button,.cdk-high-contrast-active .mat-fab,.cdk-high-contrast-active .mat-mini-fab{outline:solid 1px}.cdk-high-contrast-active .mat-button-base.cdk-keyboard-focused,.cdk-high-contrast-active .mat-button-base.cdk-program-focused{outline:solid 3px}\\n\"], directives: [{ type: i2.MatRipple, selector: \"[mat-ripple], [matRipple]\", inputs: [\"matRippleColor\", \"matRippleUnbounded\", \"matRippleCentered\", \"matRippleRadius\", \"matRippleAnimation\", \"matRippleDisabled\", \"matRippleTrigger\"], exportAs: [\"matRipple\"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatAnchor, decorators: [{\n type: Component,\n args: [{ selector: `a[mat-button], a[mat-raised-button], a[mat-icon-button], a[mat-fab],\n a[mat-mini-fab], a[mat-stroked-button], a[mat-flat-button]`, exportAs: 'matButton, matAnchor', host: {\n // Note that we ignore the user-specified tabindex when it's disabled for\n // consistency with the `mat-button` applied on native buttons where even\n // though they have an index, they're not tabbable.\n '[attr.tabindex]': 'disabled ? -1 : tabIndex',\n '[attr.disabled]': 'disabled || null',\n '[attr.aria-disabled]': 'disabled.toString()',\n '[class._mat-animation-noopable]': '_animationMode === \"NoopAnimations\"',\n '[class.mat-button-disabled]': 'disabled',\n 'class': 'mat-focus-indicator',\n }, inputs: ['disabled', 'disableRipple', 'color'], encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, template: \"
\\n
\\n
\\n\", styles: [\".mat-button .mat-button-focus-overlay,.mat-icon-button .mat-button-focus-overlay{opacity:0}.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:.04}@media(hover: none){.mat-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay,.mat-stroked-button:hover:not(.mat-button-disabled) .mat-button-focus-overlay{opacity:0}}.mat-button,.mat-icon-button,.mat-stroked-button,.mat-flat-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-button.mat-button-disabled,.mat-icon-button.mat-button-disabled,.mat-stroked-button.mat-button-disabled,.mat-flat-button.mat-button-disabled{cursor:default}.mat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-button.cdk-program-focused .mat-button-focus-overlay,.mat-icon-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-icon-button.cdk-program-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-stroked-button.cdk-program-focused .mat-button-focus-overlay,.mat-flat-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-flat-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-button::-moz-focus-inner,.mat-icon-button::-moz-focus-inner,.mat-stroked-button::-moz-focus-inner,.mat-flat-button::-moz-focus-inner{border:0}.mat-raised-button{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-raised-button::-moz-focus-inner{border:0}.mat-raised-button.mat-button-disabled{cursor:default}.mat-raised-button.cdk-keyboard-focused .mat-button-focus-overlay,.mat-raised-button.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-raised-button::-moz-focus-inner{border:0}._mat-animation-noopable.mat-raised-button{transition:none;animation:none}.mat-stroked-button{border:1px solid currentColor;padding:0 15px;line-height:34px}.mat-stroked-button .mat-button-ripple.mat-ripple,.mat-stroked-button .mat-button-focus-overlay{top:-1px;left:-1px;right:-1px;bottom:-1px}.mat-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:56px;height:56px;padding:0;flex-shrink:0}.mat-fab::-moz-focus-inner{border:0}.mat-fab.mat-button-disabled{cursor:default}.mat-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-fab{transition:none;animation:none}.mat-fab .mat-button-wrapper{padding:16px 0;display:inline-block;line-height:24px}.mat-mini-fab{box-sizing:border-box;position:relative;-webkit-user-select:none;user-select:none;cursor:pointer;outline:none;border:none;-webkit-tap-highlight-color:transparent;display:inline-block;white-space:nowrap;text-decoration:none;vertical-align:baseline;text-align:center;margin:0;min-width:64px;line-height:36px;padding:0 16px;border-radius:4px;overflow:visible;transform:translate3d(0, 0, 0);transition:background 400ms cubic-bezier(0.25, 0.8, 0.25, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);min-width:0;border-radius:50%;width:40px;height:40px;padding:0;flex-shrink:0}.mat-mini-fab::-moz-focus-inner{border:0}.mat-mini-fab.mat-button-disabled{cursor:default}.mat-mini-fab.cdk-keyboard-focused .mat-button-focus-overlay,.mat-mini-fab.cdk-program-focused .mat-button-focus-overlay{opacity:.12}.mat-mini-fab::-moz-focus-inner{border:0}._mat-animation-noopable.mat-mini-fab{transition:none;animation:none}.mat-mini-fab .mat-button-wrapper{padding:8px 0;display:inline-block;line-height:24px}.mat-icon-button{padding:0;min-width:0;width:40px;height:40px;flex-shrink:0;line-height:40px;border-radius:50%}.mat-icon-button i,.mat-icon-button .mat-icon{line-height:24px}.mat-button-ripple.mat-ripple,.mat-button-focus-overlay{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none;border-radius:inherit}.mat-button-ripple.mat-ripple:not(:empty){transform:translateZ(0)}.mat-button-focus-overlay{opacity:0;transition:opacity 200ms cubic-bezier(0.35, 0, 0.25, 1),background-color 200ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-button-focus-overlay{transition:none}.mat-button-ripple-round{border-radius:50%;z-index:1}.mat-button .mat-button-wrapper>*,.mat-flat-button .mat-button-wrapper>*,.mat-stroked-button .mat-button-wrapper>*,.mat-raised-button .mat-button-wrapper>*,.mat-icon-button .mat-button-wrapper>*,.mat-fab .mat-button-wrapper>*,.mat-mini-fab .mat-button-wrapper>*{vertical-align:middle}.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-prefix .mat-icon-button,.mat-form-field:not(.mat-form-field-appearance-legacy) .mat-form-field-suffix .mat-icon-button{display:inline-flex;justify-content:center;align-items:center;font-size:inherit;width:2.5em;height:2.5em}.cdk-high-contrast-active .mat-button,.cdk-high-contrast-active .mat-flat-button,.cdk-high-contrast-active .mat-raised-button,.cdk-high-contrast-active .mat-icon-button,.cdk-high-contrast-active .mat-fab,.cdk-high-contrast-active .mat-mini-fab{outline:solid 1px}.cdk-high-contrast-active .mat-button-base.cdk-keyboard-focused,.cdk-high-contrast-active .mat-button-base.cdk-program-focused{outline:solid 3px}\\n\"] }]\n }], ctorParameters: function () {\n return [{ type: i1.FocusMonitor }, { type: i0.ElementRef }, { type: undefined, decorators: [{\n type: Optional\n }, {\n type: Inject,\n args: [ANIMATION_MODULE_TYPE]\n }] }, { type: i0.NgZone, decorators: [{\n type: Optional\n }] }];\n }, propDecorators: { tabIndex: [{\n type: Input\n }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass MatButtonModule {\n}\nMatButtonModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatButtonModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatButtonModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatButtonModule, declarations: [MatButton, MatAnchor], imports: [MatRippleModule, MatCommonModule], exports: [MatButton, MatAnchor, MatCommonModule] });\nMatButtonModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatButtonModule, imports: [[MatRippleModule, MatCommonModule], MatCommonModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"13.3.0\", ngImport: i0, type: MatButtonModule, decorators: [{\n type: NgModule,\n args: [{\n imports: [MatRippleModule, MatCommonModule],\n exports: [MatButton, MatAnchor, MatCommonModule],\n declarations: [MatButton, MatAnchor],\n }]\n }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { MatAnchor, MatButton, MatButtonModule };\n"]}