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truly-ui

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/* MIT License Copyright (c) 2019 Temainfo Software Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import { Component, EventEmitter, Input, Output, ViewChild, ViewChildren, } from '@angular/core'; import { ActiveDescendantKeyManager } from '@angular/cdk/a11y'; import { CdkVirtualScrollViewport } from '@angular/cdk/scrolling'; import { ListBase } from './classes/list-base'; import { KeyEvent } from '../core/enums/key-events'; import { Subscription } from 'rxjs'; import { DataSourceList } from '../core/classes/datasource-list'; import { TlInput } from '../input/input'; import { TlItemSelectedDirective } from '../core/directives/itemSelected/item-selected.directive'; import { scrollIntoView } from '../core/helper/scrollIntoView'; import * as i0 from "@angular/core"; import * as i1 from "../i18n/i18n.service"; import * as i2 from "@angular/common"; import * as i3 from "@angular/cdk/scrolling"; import * as i4 from "../core/components/filter/filter-container"; import * as i5 from "../core/directives/itemSelected/item-selected.directive"; import * as i6 from "../loader/loader"; import * as i7 from "./components/listbox-template"; export class TlListBox extends ListBase { set data(value) { this._data = value; this.setUpData(value); } get data() { return this._data; } set inputElement(value) { this._inputElement = value; if (value instanceof TlInput) { this._inputElement = value.getNativeInput(); } } get inputElement() { return this._inputElement; } constructor(renderer, change, i18nService) { super(); this.renderer = renderer; this.change = change; this.i18nService = i18nService; this.rowHeight = 40; this.keyText = 'description'; this.color = 'basic'; this.loading = true; this.height = '200px'; this.debounceTime = 200; this.searchBy = null; this.nothingFoundMessage = this.i18nService.getLocale().Listbox.notFoundText; this.totalLength = 100; this.rowsPage = 10; this.selectOnInitialize = true; this.lazyMode = false; this.clickItem = new EventEmitter(); this.selectItem = new EventEmitter(); this.subscription = new Subscription(); this._data = []; this.nothingFound = false; } ngAfterViewInit() { this.listKeyManager = new ActiveDescendantKeyManager(this.listItems); this.listKeyManager.withTypeAhead(); this.initializeListBox(); this.handleListeners(); } handleListeners() { this.subscription.add(this.renderer.listen(this.getElementTarget(), 'keydown', ($event) => { const event = { [KeyEvent.ARROWDOWN]: () => this.handleKeyArrowDown($event), [KeyEvent.ARROWUP]: () => this.handleKeyArrowUp($event), [KeyEvent.ENTER]: () => this.onKeyEnter() }; if (event[$event.code]) { event[$event.code](); } })); } getElementTarget() { return this.inputElement ? this.inputElement : this.cdkVirtualScroll.elementRef.nativeElement; } initializeListBox() { if (this.selectOnInitialize) { this.setSelected(this.listItems.toArray()[0]); } this.setItemsByRowSet(); this.setItemsByScroll(); this.setContainer(); } setScrollTop() { this.scrollTop = this.cdkVirtualScroll.elementRef.nativeElement.scrollTop; } select(index) { this.listKeyManager.setActiveItem(index); if (this.listKeyManager.activeItem) { this.selectItem.emit(this.listKeyManager.activeItem.itemSelected); } } setSelected(item) { this.listKeyManager.setActiveItem(item); this.setInputFocus(); } onKeyEnter() { this.selectItem.emit(this.listKeyManager.activeItem.itemSelected); } onClickItem(item) { this.clickItem.emit(item); } setItemsByRowSet() { this.itemsByRowSet = Math.floor(this.cdkVirtualScroll.elementRef.nativeElement.offsetHeight / this.rowHeight); } setItemsByScroll() { this.itemsByScroll = Math.floor(this.cdkVirtualScroll.elementRef.nativeElement.scrollTop / this.rowHeight); } setContainer() { this.container = this.cdkVirtualScroll.elementRef.nativeElement; } setScrollVirtual() { this.cdkVirtualScroll.elementRef.nativeElement.scrollTop = 0; } setUpData(value) { if (value && value.length > 0) { this.dataSource = new DataSourceList({ dataSource: value || this.data, pageSize: this.rowsPage, totalLength: this.totalLength, lazyMode: this.lazyMode }); this.loading = false; this.nothingFound = false; this.dataSource.dataStream.next(value || this.data); } else { this.loading = false; this.nothingFound = true; if (this.dataSource) { this.dataSource.dataStream.next([]); } } } onScroll() { if (!this.scrollingByArrows) { clearTimeout(this.isScrolling); this.isScrolling = setTimeout(() => { this.setItemsByScroll(); this.setScrollTop(); this.isScrollDown() ? this.setScrollBottomItem() : this.setScrollTopItem(); this.setLastScrollTop(); }, 66); } } onWheel() { this.scrollingByArrows = false; } onFilter($event) { if ($event) { this.setScrollVirtual(); this.setUpData($event); return; } this.loading = false; this.nothingFound = true; this.dataSource.dataStream.next([]); } getItemByIndex(index) { return this.listItems.filter((item) => item.indexSelected === index)[0]; } setScrollTopItem() { this.setSelected(this.getItemByIndex(this.itemsByScroll)); } setLastScrollTop() { this.lastScrollTop = this.scrollTop; } setScrollBottomItem() { const index = Math.round(this.itemsByRowSet + this.itemsByScroll) - 1; this.setSelected(this.getItemByIndex(index)); } setInputFocus() { if (this.inputElement) { this.inputElement.focus(); } } setActiveItem() { this.activeItem = this.listKeyManager.activeItem; } handleKeyArrowUp($event) { this.scrollingByArrows = true; this.listKeyManager.onKeydown($event); this.setActiveItem(); scrollIntoView(this.activeItem.element.nativeElement); this.change.detectChanges(); } handleKeyArrowDown($event) { this.scrollingByArrows = true; this.listKeyManager.onKeydown($event); this.setActiveItem(); scrollIntoView(this.activeItem.element.nativeElement); this.change.detectChanges(); } isScrollDown() { return this.scrollTop > this.lastScrollTop; } ngOnChanges({ data }) { if (data && !data.firstChange && data.currentValue.length === 0) { this.loading = false; this.nothingFound = true; this.change.detectChanges(); } } ngOnDestroy() { this.subscription.unsubscribe(); this.change.detach(); } } /** @nocollapse */ TlListBox.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.10", ngImport: i0, type: TlListBox, deps: [{ token: i0.Renderer2 }, { token: i0.ChangeDetectorRef }, { token: i1.I18nService }], target: i0.ɵɵFactoryTarget.Component }); /** @nocollapse */ TlListBox.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "15.2.10", type: TlListBox, selector: "tl-listbox", inputs: { data: "data", rowHeight: "rowHeight", template: "template", templateNotFound: "templateNotFound", inputElement: "inputElement", keyText: "keyText", color: "color", loading: "loading", searchControl: "searchControl", height: "height", debounceTime: "debounceTime", searchBy: "searchBy", nothingFoundMessage: "nothingFoundMessage", totalLength: "totalLength", rowsPage: "rowsPage", selectOnInitialize: "selectOnInitialize", lazyMode: "lazyMode" }, outputs: { clickItem: "clickItem", selectItem: "selectItem" }, viewQueries: [{ propertyName: "cdkVirtualScroll", first: true, predicate: CdkVirtualScrollViewport, descendants: true, static: true }, { propertyName: "listItems", predicate: TlItemSelectedDirective, descendants: true }], usesInheritance: true, usesOnChanges: true, ngImport: i0, template: "<div class=\"ui-listbox-wrapper\" [style.height]=\"height\">\n <div class=\"ui-emptylist\" *ngIf=\"loading || nothingFound\">\n <div *ngIf=\"loading && !nothingFound\" class=\"ui-loading\" [style.width]=\"'50px'\" [style.height]=\"'50px'\">\n <tl-loader></tl-loader>\n </div>\n <div *ngIf=\"nothingFound && !loading\" class=\"ui-notfound\">\n <span class=\"message\">{{ nothingFoundMessage }}</span>\n <ng-container *ngTemplateOutlet=\"templateNotFound\"></ng-container>\n </div>\n </div>\n <cdk-virtual-scroll-viewport [itemSize]=\"rowHeight\" [class]=\"'ui-list-viewport ' + color\" tabindex=\"-1\"\n [style.height]=\"height\"\n (wheel)=\"onWheel()\"\n (scrolledIndexChange)=\"onScroll()\">\n <tl-filter-container [searchTerm]=\"searchControl?.value\"\n [debounceTime]=\"debounceTime\"\n [source]=\"data\"\n [searchBy]=\"searchBy\"\n (filter)=\"onFilter($event)\">\n <div [itemSelected]=\"item\" #select=\"selectItem\"\n [ngStyle]=\"{ height: rowHeight + 'px' }\"\n [indexSelected]=\"i\"\n [style.padding]=\"!template ? '0 10px' : '0'\"\n [attr.index]=\"i\"\n *cdkVirtualFor=\"let item of dataSource; let i = index\"\n (click)=\"setSelected(select); onClickItem(item)\"\n class=\"ui-list-viewport-item\">\n <div *ngIf=\"!template\">\n {{ item[keyText] }}\n </div>\n <tl-listbox-template\n [style.width]=\"'100%'\"\n *ngIf=\"template\"\n [template]=\"template\"\n [item]=\"item\"\n [index]=\"i\">\n </tl-listbox-template>\n </div>\n </tl-filter-container>\n </cdk-virtual-scroll-viewport>\n</div>\n", styles: [".ui-listbox-wrapper{position:relative;z-index:1}.ui-list-viewport{overflow-y:scroll;width:100%;border-radius:5px;outline:none}.ui-list-viewport::-webkit-scrollbar{border-radius:5px;width:8px}.ui-list-viewport-item{box-sizing:border-box;height:50px;scroll-snap-align:center;display:flex;align-items:center;cursor:pointer}.ui-emptylist{position:absolute;height:100%;width:100%;display:flex;align-items:center;justify-content:center;flex-flow:column;z-index:1}.ui-emptylist>.ui-notfound{text-align:center}.ui-emptylist>.ui-notfound .message{bottom:5px;position:relative;color:#7b7878}\n"], dependencies: [{ kind: "directive", type: i2.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { kind: "directive", type: i2.NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet", "ngTemplateOutletInjector"] }, { kind: "directive", type: i2.NgStyle, selector: "[ngStyle]", inputs: ["ngStyle"] }, { kind: "directive", type: i3.CdkFixedSizeVirtualScroll, selector: "cdk-virtual-scroll-viewport[itemSize]", inputs: ["itemSize", "minBufferPx", "maxBufferPx"] }, { kind: "directive", type: i3.CdkVirtualForOf, selector: "[cdkVirtualFor][cdkVirtualForOf]", inputs: ["cdkVirtualForOf", "cdkVirtualForTrackBy", "cdkVirtualForTemplate", "cdkVirtualForTemplateCacheSize"] }, { kind: "component", type: i3.CdkVirtualScrollViewport, selector: "cdk-virtual-scroll-viewport", inputs: ["orientation", "appendOnly"], outputs: ["scrolledIndexChange"] }, { kind: "component", type: i4.TlFilterContainer, selector: "tl-filter-container", inputs: ["searchTerm", "source", "searchBy", "lazyMode", "debounceTime"], outputs: ["filter"], exportAs: ["filterContainer"] }, { kind: "directive", type: i5.TlItemSelectedDirective, selector: "[itemSelected]", inputs: ["indexSelected", "itemSelected"], exportAs: ["selectItem"] }, { kind: "component", type: i6.TlLoader, selector: "tl-loader", inputs: ["color", "strokeWidth"] }, { kind: "component", type: i7.TlListBoxTemplate, selector: "tl-listbox-template", inputs: ["template", "item", "index"] }] }); i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.10", ngImport: i0, type: TlListBox, decorators: [{ type: Component, args: [{ selector: 'tl-listbox', template: "<div class=\"ui-listbox-wrapper\" [style.height]=\"height\">\n <div class=\"ui-emptylist\" *ngIf=\"loading || nothingFound\">\n <div *ngIf=\"loading && !nothingFound\" class=\"ui-loading\" [style.width]=\"'50px'\" [style.height]=\"'50px'\">\n <tl-loader></tl-loader>\n </div>\n <div *ngIf=\"nothingFound && !loading\" class=\"ui-notfound\">\n <span class=\"message\">{{ nothingFoundMessage }}</span>\n <ng-container *ngTemplateOutlet=\"templateNotFound\"></ng-container>\n </div>\n </div>\n <cdk-virtual-scroll-viewport [itemSize]=\"rowHeight\" [class]=\"'ui-list-viewport ' + color\" tabindex=\"-1\"\n [style.height]=\"height\"\n (wheel)=\"onWheel()\"\n (scrolledIndexChange)=\"onScroll()\">\n <tl-filter-container [searchTerm]=\"searchControl?.value\"\n [debounceTime]=\"debounceTime\"\n [source]=\"data\"\n [searchBy]=\"searchBy\"\n (filter)=\"onFilter($event)\">\n <div [itemSelected]=\"item\" #select=\"selectItem\"\n [ngStyle]=\"{ height: rowHeight + 'px' }\"\n [indexSelected]=\"i\"\n [style.padding]=\"!template ? '0 10px' : '0'\"\n [attr.index]=\"i\"\n *cdkVirtualFor=\"let item of dataSource; let i = index\"\n (click)=\"setSelected(select); onClickItem(item)\"\n class=\"ui-list-viewport-item\">\n <div *ngIf=\"!template\">\n {{ item[keyText] }}\n </div>\n <tl-listbox-template\n [style.width]=\"'100%'\"\n *ngIf=\"template\"\n [template]=\"template\"\n [item]=\"item\"\n [index]=\"i\">\n </tl-listbox-template>\n </div>\n </tl-filter-container>\n </cdk-virtual-scroll-viewport>\n</div>\n", styles: [".ui-listbox-wrapper{position:relative;z-index:1}.ui-list-viewport{overflow-y:scroll;width:100%;border-radius:5px;outline:none}.ui-list-viewport::-webkit-scrollbar{border-radius:5px;width:8px}.ui-list-viewport-item{box-sizing:border-box;height:50px;scroll-snap-align:center;display:flex;align-items:center;cursor:pointer}.ui-emptylist{position:absolute;height:100%;width:100%;display:flex;align-items:center;justify-content:center;flex-flow:column;z-index:1}.ui-emptylist>.ui-notfound{text-align:center}.ui-emptylist>.ui-notfound .message{bottom:5px;position:relative;color:#7b7878}\n"] }] }], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i0.ChangeDetectorRef }, { type: i1.I18nService }]; }, propDecorators: { data: [{ type: Input, args: ['data'] }], rowHeight: [{ type: Input }], template: [{ type: Input }], templateNotFound: [{ type: Input }], inputElement: [{ type: Input, args: ['inputElement'] }], keyText: [{ type: Input }], color: [{ type: Input }], loading: [{ type: Input }], searchControl: [{ type: Input }], height: [{ type: Input }], debounceTime: [{ type: Input }], searchBy: [{ type: Input }], nothingFoundMessage: [{ type: Input }], totalLength: [{ type: Input }], rowsPage: [{ type: Input }], selectOnInitialize: [{ type: Input }], lazyMode: [{ type: Input }], clickItem: [{ type: Output }], selectItem: [{ type: Output }], cdkVirtualScroll: [{ type: ViewChild, args: [CdkVirtualScrollViewport, { static: true }] }], listItems: [{ type: ViewChildren, args: [TlItemSelectedDirective] }] } }); //# 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MIT License\n\n Copyright (c) 2019 Temainfo Software\n\n Permission is hereby granted, free of charge, to any person obtaining a copy\n of this software and associated documentation files (the \"Software\"), to deal\n in the Software without restriction, including without limitation the rights\n to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n copies of the Software, and to permit persons to whom the Software is\n furnished to do so, subject to the following conditions:\n The above copyright notice and this permission notice shall be included in all\n copies or substantial portions of the Software.\n THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n SOFTWARE.\n */\n\nimport {\n  AfterViewInit,\n  ChangeDetectorRef,\n  Component,\n  EventEmitter,\n  Input,\n  OnChanges,\n  OnDestroy,\n  Output,\n  QueryList,\n  Renderer2,\n  SimpleChanges,\n  TemplateRef,\n  ViewChild,\n  ViewChildren,\n} from '@angular/core';\nimport {ActiveDescendantKeyManager} from '@angular/cdk/a11y';\nimport {CdkVirtualScrollViewport} from '@angular/cdk/scrolling';\nimport {ListBase} from './classes/list-base';\nimport {KeyEvent} from '../core/enums/key-events';\nimport {Subscription} from 'rxjs';\nimport {UntypedFormControl} from '@angular/forms';\nimport {DataSourceList} from '../core/classes/datasource-list';\nimport {TlInput} from '../input/input';\nimport {I18nService} from '../i18n/i18n.service';\nimport {TlItemSelectedDirective} from '../core/directives/itemSelected/item-selected.directive';\nimport {scrollIntoView} from '../core/helper/scrollIntoView';\n\n@Component({\n  selector: 'tl-listbox',\n  templateUrl: './listbox.html',\n  styleUrls: ['./listbox.scss'],\n})\nexport class TlListBox extends ListBase implements AfterViewInit, OnDestroy, OnChanges {\n\n  @Input('data')\n  set data(value) {\n    this._data = value;\n    this.setUpData(value);\n  }\n\n  get data() {\n    return this._data;\n  }\n\n  @Input() rowHeight = 40;\n\n  @Input() template: TemplateRef<any>;\n\n  @Input() templateNotFound: TemplateRef<any>;\n\n  @Input('inputElement')\n  set inputElement(value) {\n    this._inputElement = value;\n    if (value instanceof TlInput) {\n      this._inputElement = value.getNativeInput();\n    }\n  }\n\n  get inputElement() {\n    return this._inputElement;\n  }\n\n  @Input() keyText = 'description';\n\n  @Input() color = 'basic';\n\n  @Input() loading = true;\n\n  @Input() searchControl: UntypedFormControl;\n\n  @Input() height = '200px';\n\n  @Input() debounceTime = 200;\n\n  @Input() searchBy = null;\n\n  @Input() nothingFoundMessage = this.i18nService.getLocale().Listbox.notFoundText;\n\n  @Input() totalLength = 100;\n\n  @Input() rowsPage = 10;\n\n  @Input() selectOnInitialize = true;\n\n  @Input() lazyMode = false;\n\n  @Output() clickItem: EventEmitter<any> = new EventEmitter();\n\n  @Output() selectItem: EventEmitter<any> = new EventEmitter();\n\n  @ViewChild(CdkVirtualScrollViewport, {static: true} ) cdkVirtualScroll: CdkVirtualScrollViewport;\n\n  @ViewChildren(TlItemSelectedDirective) listItems: QueryList<TlItemSelectedDirective>;\n\n  private subscription = new Subscription();\n\n  private _data = [];\n\n  private _inputElement;\n\n  public dataSource: DataSourceList;\n\n  public nothingFound = false;\n\n  constructor(private renderer: Renderer2,\n              private change: ChangeDetectorRef,\n              private i18nService: I18nService) {\n    super();\n  }\n\n  ngAfterViewInit() {\n    this.listKeyManager = new ActiveDescendantKeyManager(this.listItems);\n    this.listKeyManager.withTypeAhead();\n    this.initializeListBox();\n    this.handleListeners();\n  }\n\n  private handleListeners() {\n    this.subscription.add(this.renderer.listen(this.getElementTarget(), 'keydown', ($event) => {\n      const event = {\n        [KeyEvent.ARROWDOWN]: () => this.handleKeyArrowDown($event),\n        [KeyEvent.ARROWUP]: () => this.handleKeyArrowUp($event),\n        [KeyEvent.ENTER]: () => this.onKeyEnter()\n      };\n      if (event[$event.code]) {\n        event[$event.code]();\n      }\n    }));\n  }\n\n  private getElementTarget() {\n    return this.inputElement ? this.inputElement : this.cdkVirtualScroll.elementRef.nativeElement;\n  }\n\n  private initializeListBox() {\n    if ( this.selectOnInitialize ) {\n      this.setSelected(this.listItems.toArray()[0]);\n    }\n    this.setItemsByRowSet();\n    this.setItemsByScroll();\n    this.setContainer();\n  }\n\n  private setScrollTop() {\n    this.scrollTop = this.cdkVirtualScroll.elementRef.nativeElement.scrollTop;\n  }\n\n  select(index: number) {\n    this.listKeyManager.setActiveItem( index );\n    if (this.listKeyManager.activeItem) {\n      this.selectItem.emit((this.listKeyManager.activeItem as TlItemSelectedDirective).itemSelected);\n    }\n  }\n\n  setSelected(item: TlItemSelectedDirective) {\n    this.listKeyManager.setActiveItem(item);\n    this.setInputFocus();\n  }\n\n  onKeyEnter() {\n    this.selectItem.emit((this.listKeyManager.activeItem as TlItemSelectedDirective).itemSelected);\n  }\n\n  onClickItem(item: any) {\n    this.clickItem.emit(item);\n  }\n\n  private setItemsByRowSet() {\n    this.itemsByRowSet = Math.floor(this.cdkVirtualScroll.elementRef.nativeElement.offsetHeight / this.rowHeight);\n  }\n\n  private setItemsByScroll() {\n    this.itemsByScroll = Math.floor(this.cdkVirtualScroll.elementRef.nativeElement.scrollTop / this.rowHeight);\n  }\n\n  private setContainer() {\n    this.container = this.cdkVirtualScroll.elementRef.nativeElement;\n  }\n\n  private setScrollVirtual() {\n    this.cdkVirtualScroll.elementRef.nativeElement.scrollTop = 0;\n  }\n\n  private setUpData(value?) {\n    if ( value && value.length > 0) {\n      this.dataSource = new DataSourceList({\n        dataSource: value || this.data,\n        pageSize: this.rowsPage,\n        totalLength: this.totalLength,\n        lazyMode: this.lazyMode\n      });\n      this.loading = false;\n      this.nothingFound = false;\n      this.dataSource.dataStream.next(value || this.data);\n    } else {\n      this.loading = false;\n      this.nothingFound = true;\n      if (this.dataSource) {\n        this.dataSource.dataStream.next([]);\n      }\n    }\n  }\n\n  onScroll() {\n    if (!this.scrollingByArrows) {\n      clearTimeout(this.isScrolling);\n      this.isScrolling = setTimeout(() => {\n        this.setItemsByScroll();\n        this.setScrollTop();\n        this.isScrollDown() ? this.setScrollBottomItem() : this.setScrollTopItem();\n        this.setLastScrollTop();\n      }, 66);\n    }\n  }\n\n  onWheel() {\n    this.scrollingByArrows = false;\n  }\n\n  onFilter($event) {\n    if ($event) {\n      this.setScrollVirtual();\n      this.setUpData($event);\n      return;\n    }\n    this.loading = false;\n    this.nothingFound = true;\n    this.dataSource.dataStream.next([]);\n  }\n\n  private getItemByIndex(index: number) {\n    return this.listItems.filter((item) => item.indexSelected === index)[0];\n  }\n\n  private setScrollTopItem() {\n    this.setSelected(this.getItemByIndex(this.itemsByScroll));\n  }\n\n  private setLastScrollTop() {\n    this.lastScrollTop = this.scrollTop;\n  }\n\n  private setScrollBottomItem() {\n    const index = Math.round(this.itemsByRowSet + this.itemsByScroll) - 1;\n    this.setSelected(this.getItemByIndex(index));\n  }\n\n  private setInputFocus() {\n    if ( this.inputElement ) {\n      this.inputElement.focus();\n    }\n  }\n\n  private setActiveItem() {\n    this.activeItem = this.listKeyManager.activeItem as TlItemSelectedDirective;\n  }\n\n  handleKeyArrowUp($event) {\n    this.scrollingByArrows = true;\n    this.listKeyManager.onKeydown($event);\n    this.setActiveItem();\n    scrollIntoView(this.activeItem.element.nativeElement);\n    this.change.detectChanges();\n  }\n\n  handleKeyArrowDown($event) {\n    this.scrollingByArrows = true;\n    this.listKeyManager.onKeydown($event);\n    this.setActiveItem();\n    scrollIntoView(this.activeItem.element.nativeElement);\n    this.change.detectChanges();\n  }\n\n  private isScrollDown() {\n    return this.scrollTop > this.lastScrollTop;\n  }\n\n  ngOnChanges({data}: SimpleChanges) {\n    if ( data && !data.firstChange && data.currentValue.length === 0 ) {\n      this.loading = false;\n      this.nothingFound = true;\n      this.change.detectChanges();\n    }\n  }\n\n  ngOnDestroy() {\n    this.subscription.unsubscribe();\n    this.change.detach();\n  }\n\n}\n","<div class=\"ui-listbox-wrapper\" [style.height]=\"height\">\n  <div class=\"ui-emptylist\" *ngIf=\"loading || nothingFound\">\n    <div *ngIf=\"loading && !nothingFound\" class=\"ui-loading\" [style.width]=\"'50px'\" [style.height]=\"'50px'\">\n      <tl-loader></tl-loader>\n    </div>\n    <div *ngIf=\"nothingFound && !loading\" class=\"ui-notfound\">\n      <span class=\"message\">{{ nothingFoundMessage }}</span>\n      <ng-container *ngTemplateOutlet=\"templateNotFound\"></ng-container>\n    </div>\n  </div>\n  <cdk-virtual-scroll-viewport [itemSize]=\"rowHeight\" [class]=\"'ui-list-viewport ' + color\" tabindex=\"-1\"\n                               [style.height]=\"height\"\n                               (wheel)=\"onWheel()\"\n                               (scrolledIndexChange)=\"onScroll()\">\n    <tl-filter-container [searchTerm]=\"searchControl?.value\"\n                         [debounceTime]=\"debounceTime\"\n                         [source]=\"data\"\n                         [searchBy]=\"searchBy\"\n                         (filter)=\"onFilter($event)\">\n      <div [itemSelected]=\"item\" #select=\"selectItem\"\n           [ngStyle]=\"{ height: rowHeight + 'px' }\"\n           [indexSelected]=\"i\"\n           [style.padding]=\"!template ? '0 10px' : '0'\"\n           [attr.index]=\"i\"\n           *cdkVirtualFor=\"let item of dataSource; let i = index\"\n           (click)=\"setSelected(select); onClickItem(item)\"\n           class=\"ui-list-viewport-item\">\n        <div *ngIf=\"!template\">\n          {{ item[keyText] }}\n        </div>\n        <tl-listbox-template\n          [style.width]=\"'100%'\"\n          *ngIf=\"template\"\n          [template]=\"template\"\n          [item]=\"item\"\n          [index]=\"i\">\n        </tl-listbox-template>\n      </div>\n    </tl-filter-container>\n  </cdk-virtual-scroll-viewport>\n</div>\n"]}