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193 KiB
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1 line
193 KiB
JSON
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{"ast":null,"code":"import { coerceNumberProperty, coerceElement } from '@angular/cdk/coercion';\nimport { InjectionToken, Directive, forwardRef, Input, ɵɵdefineInjectable, ɵɵinject, NgZone, Injectable, Optional, Inject, ElementRef, Component, ViewEncapsulation, ChangeDetectionStrategy, ChangeDetectorRef, Output, ViewChild, ViewContainerRef, TemplateRef, IterableDiffers, 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 { Platform, getRtlScrollAxisType, supportsScrollBehavior, PlatformModule } from '@angular/cdk/platform';\nimport { DOCUMENT } from '@angular/common';\nimport { Directionality, BidiModule } from '@angular/cdk/bidi';\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. */\nimport * as ɵngcc0 from '@angular/core';\nimport * as ɵngcc1 from '@angular/cdk/platform';\nimport * as ɵngcc2 from '@angular/cdk/bidi';\nimport * as ɵngcc3 from '@angular/cdk/collections';\nconst _c0 = [\"contentWrapper\"];\nconst _c1 = [\"*\"];\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 onDa
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