| { | |
| "version": 3, | |
| "file": "covalent-core-virtual-scroll.js", | |
| "sources": [ | |
| "ng://@covalent/core/virtual-scroll/out/virtual-scroll.module.ts", | |
| "ng://@covalent/core/virtual-scroll/out/virtual-scroll-container.component.ts", | |
| "ng://@covalent/core/virtual-scroll/out/virtual-scroll-row.directive.ts" | |
| ], | |
| "sourcesContent": [ | |
| "import { NgModule, Type } from '@angular/core';\nimport { CommonModule } from '@angular/common';\n\nimport { TdVirtualScrollRowDirective } from './virtual-scroll-row.directive';\nimport { TdVirtualScrollContainerComponent } from './virtual-scroll-container.component';\n\nconst TD_VIRTUAL_SCROLL: Type<any>[] = [\n TdVirtualScrollRowDirective,\n TdVirtualScrollContainerComponent,\n];\n\n@NgModule({\n imports: [\n CommonModule,\n ],\n declarations: [\n TD_VIRTUAL_SCROLL,\n ],\n exports: [\n TD_VIRTUAL_SCROLL,\n ],\n})\nexport class CovalentVirtualScrollModule {\n\n}\n", | |
| "import { Component, Directive, Input, EventEmitter, ContentChild, AfterViewInit, ViewChild,\n ChangeDetectionStrategy, ChangeDetectorRef, QueryList, ViewChildren, ElementRef, HostListener,\n Renderer2, AfterViewChecked, OnDestroy, TrackByFunction } from '@angular/core';\nimport { DomSanitizer, SafeStyle } from '@angular/platform-browser';\n\nimport { Subscription } from 'rxjs/Subscription';\n\nimport { TdVirtualScrollRowDirective } from './virtual-scroll-row.directive';\n\nconst TD_VIRTUAL_OFFSET: number = 2;\n\n@Component({\n selector: 'td-virtual-scroll-container',\n styles: [`:host{\n display:block;\n height:100%;\n width:100%;\n overflow:auto;\n position:relative; }\n`],\n template: `<div [style.height.px]=\"totalHeight\"></div>\n<div [style.transform]=\"offsetTransform\"\n [style.position]=\"'absolute'\"\n [style.width.%]=\"100\">\n <ng-template let-row\n let-index=\"index\"\n ngFor\n [ngForOf]=\"virtualData\"\n [ngForTrackBy]=\"trackBy\">\n <div #rowElement\n [style.width.%]=\"100\">\n <ng-template *ngIf=\"_rowTemplate\"\n [ngTemplateOutlet]=\"_rowTemplate.templateRef\"\n [ngTemplateOutletContext]=\"{row: row,\n index: (fromRow + index),\n first: (fromRow + index) === 0,\n last: (fromRow + index) === (data.length - 1),\n odd: ((fromRow + index + 1) % 2) === 1,\n even: ((fromRow + index + 1) % 2) === 0}\">\n </ng-template>\n </div>\n </ng-template>\n</div>`,\n changeDetection: ChangeDetectionStrategy.OnPush,\n})\nexport class TdVirtualScrollContainerComponent implements AfterViewInit, AfterViewChecked, OnDestroy {\n\n private _rowChangeSubs: Subscription;\n private _initialized: boolean = false;\n\n private _totalHeight: number = 0;\n private _hostHeight: number = 0;\n private _scrollVerticalOffset: number = 0;\n private _offsetTransform: SafeStyle;\n\n private _fromRow: number = 0;\n private _toRow: number = 0;\n\n private _data: any[];\n private _virtualData: any[];\n\n /**\n * data: any[]\n * List of items to virtually iterate on.\n */\n @Input('data')\n set data(data: any[]) {\n this._data = data;\n if (this._initialized) {\n this._calculateVirtualRows();\n }\n this._changeDetectorRef.markForCheck();\n }\n get data(): any[] {\n return this._data;\n }\n\n get virtualData(): any[] {\n return this._virtualData;\n }\n\n @ViewChildren('rowElement') _rows: QueryList<ElementRef>;\n\n @ContentChild(TdVirtualScrollRowDirective) _rowTemplate: TdVirtualScrollRowDirective;\n\n get rowHeight(): number {\n if (this._rows && this._rows.toArray()[0]) {\n return this._rows.toArray()[0].nativeElement.getBoundingClientRect().height;\n }\n return 0;\n }\n\n get totalHeight(): number {\n return this._totalHeight;\n }\n\n get fromRow(): number {\n return this._fromRow;\n }\n\n get toRow(): number {\n return this._toRow;\n }\n\n get offsetTransform(): SafeStyle {\n return this._offsetTransform;\n }\n\n constructor(private _elementRef: ElementRef,\n private _domSanitizer: DomSanitizer,\n private _renderer: Renderer2,\n private _changeDetectorRef: ChangeDetectorRef) {}\n\n ngAfterViewInit(): void {\n this._rowChangeSubs = this._rows.changes.subscribe(() => {\n this._calculateVirtualRows();\n });\n this._initialized = true;\n this._calculateVirtualRows();\n }\n\n ngAfterViewChecked(): void {\n let newHostHeight: number = this._elementRef.nativeElement.getBoundingClientRect().height;\n if (this._hostHeight !== newHostHeight) {\n this._hostHeight = newHostHeight;\n if (this._initialized) {\n this._calculateVirtualRows();\n }\n }\n }\n\n ngOnDestroy(): void {\n if (this._rowChangeSubs) {\n this._rowChangeSubs.unsubscribe();\n }\n }\n\n /**\n * trackBy?: TrackByFunction\n * This accepts the same trackBy function [ngFor] does.\n * https://angular.io/api/core/TrackByFunction\n */\n @Input('trackBy') trackBy: TrackByFunction<any> = (index: number, item: any) => {\n return item;\n }\n\n @HostListener('scroll', ['$event'])\n handleScroll(event: Event): void {\n let element: HTMLElement = (<HTMLElement>event.target);\n if (element) {\n let verticalScroll: number = element.scrollTop;\n if (this._scrollVerticalOffset !== verticalScroll) {\n this._scrollVerticalOffset = verticalScroll;\n if (this._initialized) {\n this._calculateVirtualRows();\n }\n }\n }\n }\n\n /**\n * Method to refresh and recalculate the virtual rows\n * e.g. after changing the [data] content\n */\n refresh(): void {\n this._calculateVirtualRows();\n }\n\n /**\n * Method to scroll to a specific row of the list.\n */\n scrollTo(row: number): void {\n this._elementRef.nativeElement.scrollTop = row * this.rowHeight;\n this._changeDetectorRef.markForCheck();\n }\n\n /**\n * Method to scroll to the start of the list.\n */\n scrollToStart(): void {\n this.scrollTo(0);\n this._changeDetectorRef.markForCheck();\n }\n\n /**\n * Method to scroll to the end of the list.\n */\n scrollToEnd(): void {\n this.scrollTo(this.totalHeight / this.rowHeight);\n this._changeDetectorRef.markForCheck();\n }\n\n private _calculateVirtualRows(): void {\n if (this._data) {\n this._totalHeight = this._data.length * this.rowHeight;\n let fromRow: number = Math.floor((this._scrollVerticalOffset / this.rowHeight)) - TD_VIRTUAL_OFFSET;\n this._fromRow = fromRow > 0 ? fromRow : 0;\n let range: number = Math.floor((this._hostHeight / this.rowHeight)) + (TD_VIRTUAL_OFFSET * 2);\n let toRow: number = range + this.fromRow;\n if (isFinite(toRow) && toRow > this._data.length) {\n toRow = this._data.length;\n } else if (!isFinite(toRow)) {\n toRow = TD_VIRTUAL_OFFSET;\n }\n this._toRow = toRow;\n } else {\n this._totalHeight = 0;\n this._fromRow = 0;\n this._toRow = 0;\n }\n\n let offset: number = 0;\n if (this._scrollVerticalOffset > (TD_VIRTUAL_OFFSET * this.rowHeight)) {\n offset = this.fromRow * this.rowHeight;\n }\n\n this._offsetTransform = this._domSanitizer.bypassSecurityTrustStyle('translateY(' + (offset - this.totalHeight) + 'px)');\n if (this._data) {\n this._virtualData = this.data.slice(this.fromRow, this.toRow);\n }\n // mark for check at the end of the queue so we are sure\n // that the changes will be marked\n Promise.resolve().then(() => {\n this._changeDetectorRef.markForCheck();\n });\n }\n\n}\n", | |
| "import { Directive, TemplateRef, ViewContainerRef } from '@angular/core';\nimport { TemplatePortalDirective } from '@angular/cdk/portal';\n\n@Directive({selector: '[tdVirtualScrollRow]'})\nexport class TdVirtualScrollRowDirective extends TemplatePortalDirective {\n\n constructor(templateRef: TemplateRef<any>,\n viewContainerRef: ViewContainerRef) {\n super(templateRef, viewContainerRef);\n }\n \n}\n" | |
| ], | |
| "names": [], | |
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| |
| } |