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1 | {"version":3,"file":"virtual-scroll-viewport.d.ts","sources":["virtual-scroll-viewport.d.ts"],"names":[],"mappings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sourcesContent":["/**\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 */\nimport { Directionality } from '@angular/cdk/bidi';\nimport { ListRange } from '@angular/cdk/collections';\nimport { ChangeDetectorRef, ElementRef, NgZone, OnDestroy, OnInit } from '@angular/core';\nimport { Observable } from 'rxjs';\nimport { ScrollDispatcher } from './scroll-dispatcher';\nimport { CdkScrollable } from './scrollable';\nimport { VirtualScrollStrategy } from './virtual-scroll-strategy';\nimport { ViewportRuler } from './viewport-ruler';\nimport { CdkVirtualScrollRepeater } from './virtual-scroll-repeater';\nimport { BooleanInput } from '@angular/cdk/coercion';\n/** A viewport that virtualizes its scrolling with the help of `CdkVirtualForOf`. */\nexport declare class CdkVirtualScrollViewport extends CdkScrollable implements OnInit, OnDestroy {\n elementRef: ElementRef<HTMLElement>;\n private _changeDetectorRef;\n private _scrollStrategy;\n /** Emits when the viewport is detached from a CdkVirtualForOf. */\n private readonly _detachedSubject;\n /** Emits when the rendered range changes. */\n private readonly _renderedRangeSubject;\n /** The direction the viewport scrolls. */\n get orientation(): 'horizontal' | 'vertical';\n set orientation(orientation: 'horizontal' | 'vertical');\n private _orientation;\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(): boolean;\n set appendOnly(value: boolean);\n private _appendOnly;\n /** Emits when the index of the first element visible in the viewport changes. */\n readonly scrolledIndexChange: Observable<number>;\n /** The element that wraps the rendered content. */\n _contentWrapper: ElementRef<HTMLElement>;\n /** A stream that emits whenever the rendered range changes. */\n readonly renderedRangeStream: Observable<ListRange>;\n /**\n * The total size of all content (in pixels), including content that is not currently rendered.\n */\n private _totalContentSize;\n /** A string representing the `style.width` property value to be used for the spacer element. */\n _totalContentWidth: string;\n /** A string representing the `style.height` property value to be used for the spacer element. */\n _totalContentHeight: string;\n /**\n * The CSS transform applied to the rendered subset of items so that they appear within the bounds\n * of the visible viewport.\n */\n private _renderedContentTransform;\n /** The currently rendered range of indices. */\n private _renderedRange;\n /** The length of the data bound to this viewport (in number of items). */\n private _dataLength;\n /** The size of the viewport (in pixels). */\n private _viewportSize;\n /** the currently attached CdkVirtualScrollRepeater. */\n private _forOf;\n /** The last rendered content offset that was set. */\n private _renderedContentOffset;\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 private _renderedContentOffsetNeedsRewrite;\n /** Whether there is a pending change detection cycle. */\n private _isChangeDetectionPending;\n /** A list of functions to run after the next change detection cycle. */\n private _runAfterChangeDetection;\n /** Subscription to changes in the viewport size. */\n private _viewportChanges;\n constructor(elementRef: ElementRef<HTMLElement>, _changeDetectorRef: ChangeDetectorRef, ngZone: NgZone, _scrollStrategy: VirtualScrollStrategy, dir: Directionality, scrollDispatcher: ScrollDispatcher, viewportRuler: ViewportRuler);\n ngOnInit(): void;\n ngOnDestroy(): void;\n /** Attaches a `CdkVirtualScrollRepeater` to this viewport. */\n attach(forOf: CdkVirtualScrollRepeater<any>): void;\n /** Detaches the current `CdkVirtualForOf`. */\n detach(): void;\n /** Gets the length of the data bound to this viewport (in number of items). */\n getDataLength(): number;\n /** Gets the size of the viewport (in pixels). */\n getViewportSize(): number;\n /** Get the current rendered range of items. */\n getRenderedRange(): ListRange;\n /**\n * Sets the total size of all content (in pixels), including content that is not currently\n * rendered.\n */\n setTotalContentSize(size: number): void;\n /** Sets the currently rendered range of indices. */\n setRenderedRange(range: ListRange): void;\n /**\n * Gets the offset from the start of the viewport to the start of the rendered data (in pixels).\n */\n getOffsetToRenderedContentStart(): number | null;\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: number, to?: 'to-start' | 'to-end'): void;\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: number, behavior?: ScrollBehavior): void;\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: number, behavior?: ScrollBehavior): void;\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?: 'top' | 'left' | 'right' | 'bottom' | 'start' | 'end'): number;\n /** Measure the combined size of all of the rendered items. */\n measureRenderedContentSize(): number;\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: ListRange): number;\n /** Update the viewport dimensions and re-render. */\n checkViewportSize(): void;\n /** Measure the viewport size. */\n private _measureViewportSize;\n /** Queue up change detection to run. */\n private _markChangeDetectionNeeded;\n /** Run change detection. */\n private _doChangeDetection;\n /** Calculates the `style.width` and `style.height` for the spacer element. */\n private _calculateSpacerSize;\n static ngAcceptInputType_appendOnly: BooleanInput;\n}\n"]} |
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