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1import { ElementRef, EventEmitter, NgZone, OnChanges, OnDestroy, OnInit, Renderer2, SimpleChanges, TemplateRef } from '@angular/core';
2import { NgDropdownPanelService } from './ng-dropdown-panel.service';
3import { DropdownPosition } from './ng-select.types';
4import { NgOption } from './ng-select.types';
5import * as i0 from "@angular/core";
6export declare class NgDropdownPanelComponent implements OnInit, OnChanges, OnDestroy {
7 private _renderer;
8 private _zone;
9 private _panelService;
10 private _document;
11 items: NgOption[];
12 markedItem: NgOption;
13 position: DropdownPosition;
14 appendTo: string;
15 bufferAmount: any;
16 virtualScroll: boolean;
17 headerTemplate: TemplateRef<any>;
18 footerTemplate: TemplateRef<any>;
19 filterValue: string;
20 update: EventEmitter<any[]>;
21 scroll: EventEmitter<{
22 start: number;
23 end: number;
24 }>;
25 scrollToEnd: EventEmitter<void>;
26 outsideClick: EventEmitter<void>;
27 contentElementRef: ElementRef;
28 scrollElementRef: ElementRef;
29 paddingElementRef: ElementRef;
30 private readonly _destroy$;
31 private readonly _dropdown;
32 private _virtualPadding;
33 private _scrollablePanel;
34 private _contentPanel;
35 private _select;
36 private _parent;
37 private _scrollToEndFired;
38 private _updateScrollHeight;
39 private _lastScrollPosition;
40 constructor(_renderer: Renderer2, _zone: NgZone, _panelService: NgDropdownPanelService, _elementRef: ElementRef, _document: any);
41 private _currentPosition;
42 get currentPosition(): DropdownPosition;
43 private _itemsLength;
44 private get itemsLength();
45 private set itemsLength(value);
46 private get _startOffset();
47 ngOnInit(): void;
48 ngOnChanges(changes: SimpleChanges): void;
49 ngOnDestroy(): void;
50 scrollTo(option: NgOption, startFromOption?: boolean): void;
51 scrollToTag(): void;
52 adjustPosition(): void;
53 private _handleDropdownPosition;
54 private _updateDropdownClass;
55 private _handleScroll;
56 private _handleOutsideClick;
57 private _checkToClose;
58 private _onItemsChange;
59 private _updateItems;
60 private _updateItemsRange;
61 private _onContentScrolled;
62 private _updateVirtualHeight;
63 private _setVirtualHeight;
64 private _onItemsLengthChanged;
65 private _renderItemsRange;
66 private _measureDimensions;
67 private _fireScrollToEnd;
68 private _calculateCurrentPosition;
69 private _appendDropdown;
70 private _updateXPosition;
71 private _updateYPosition;
72 private _setupMousedownListener;
73 static ɵfac: i0.ɵɵFactoryDeclaration<NgDropdownPanelComponent, [null, null, null, null, { optional: true; }]>;
74 static ɵcmp: i0.ɵɵComponentDeclaration<NgDropdownPanelComponent, "ng-dropdown-panel", never, { "items": { "alias": "items"; "required": false; }; "markedItem": { "alias": "markedItem"; "required": false; }; "position": { "alias": "position"; "required": false; }; "appendTo": { "alias": "appendTo"; "required": false; }; "bufferAmount": { "alias": "bufferAmount"; "required": false; }; "virtualScroll": { "alias": "virtualScroll"; "required": false; }; "headerTemplate": { "alias": "headerTemplate"; "required": false; }; "footerTemplate": { "alias": "footerTemplate"; "required": false; }; "filterValue": { "alias": "filterValue"; "required": false; }; }, { "update": "update"; "scroll": "scroll"; "scrollToEnd": "scrollToEnd"; "outsideClick": "outsideClick"; }, never, ["*"], false, never>;
75 static ngAcceptInputType_virtualScroll: unknown;
76}