import * as i0 from '@angular/core';
import { AfterViewInit, ElementRef, EventEmitter, ExistingProvider, OnInit, OnChanges, TemplateRef, QueryList, SimpleChanges } from '@angular/core';
import { Direction } from '@angular/cdk/bidi';
import { OnChangeType, OnTouchedType, NzSafeAny, NzStatus, NgClassInterface, NzValidateStatus } from 'ng-zorro-antd/core/types';
import { ControlValueAccessor } from '@angular/forms';
import { Observable } from 'rxjs';

/**
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
 */

/**
 * @deprecated Internally used, will be removed in v21, please do not use it.
 */
declare const NZ_MENTION_TRIGGER_ACCESSOR: ExistingProvider;
declare class NzMentionTriggerDirective implements ControlValueAccessor, AfterViewInit {
    readonly elementRef: ElementRef<HTMLInputElement | HTMLTextAreaElement>;
    private readonly ngZone;
    private readonly cdr;
    private readonly destroyRef;
    private readonly nzMentionService;
    readonly onFocusin: EventEmitter<FocusEvent>;
    readonly onBlur: EventEmitter<FocusEvent>;
    readonly onInput: EventEmitter<KeyboardEvent>;
    readonly onKeydown: EventEmitter<KeyboardEvent>;
    readonly onClick: EventEmitter<MouseEvent>;
    value?: string;
    constructor();
    completeEvents(): void;
    focus(caretPos?: number | null): void;
    insertMention(mention: Mention): void;
    writeValue(value: string): void;
    onChange: OnChangeType;
    onTouched: OnTouchedType;
    registerOnChange(fn: (value: string) => void): void;
    registerOnTouched(fn: () => void): void;
    ngAfterViewInit(): void;
    private setupEventListener;
    static ɵfac: i0.ɵɵFactoryDeclaration<NzMentionTriggerDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NzMentionTriggerDirective, "input[nzMentionTrigger], textarea[nzMentionTrigger]", ["nzMentionTrigger"], {}, { "onFocusin": "onFocusin"; "onBlur": "onBlur"; "onInput": "onInput"; "onKeydown": "onKeydown"; "onClick": "onClick"; }, never, never, true, never>;
}

/**
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
 */

interface MentionOnSearchTypes {
    value: string;
    prefix: string;
}
interface Mention {
    startPos: number;
    endPos: number;
    mention: string;
}
type MentionPlacement = 'top' | 'bottom';
declare class NzMentionComponent implements OnInit, AfterViewInit, OnChanges {
    private ngZone;
    private directionality;
    private cdr;
    private overlay;
    private viewContainerRef;
    private elementRef;
    private renderer;
    private nzMentionService;
    private destroyRef;
    nzValueWith: (value: NzSafeAny) => string;
    nzPrefix: string | string[];
    nzLoading: boolean;
    nzNotFoundContent: string;
    nzPlacement: MentionPlacement;
    nzSuggestions: NzSafeAny[];
    nzStatus: NzStatus;
    readonly nzOnSelect: EventEmitter<any>;
    readonly nzOnSearchChange: EventEmitter<MentionOnSearchTypes>;
    trigger: NzMentionTriggerDirective;
    suggestionsTemp?: TemplateRef<void>;
    items: QueryList<ElementRef>;
    set suggestionChild(value: TemplateRef<{
        $implicit: NzSafeAny;
    }>);
    isOpen: boolean;
    filteredSuggestions: string[];
    suggestionTemplate: TemplateRef<{
        $implicit: NzSafeAny;
    }> | null;
    activeIndex: number;
    dir: Direction;
    prefixCls: string;
    statusCls: NgClassInterface;
    status: NzValidateStatus;
    hasFeedback: boolean;
    private previousValue;
    private cursorMention;
    private cursorMentionStart?;
    private cursorMentionEnd?;
    private overlayRef;
    private portal?;
    private positionStrategy;
    private overlayOutsideClickSubscription;
    private document;
    private get triggerNativeElement();
    private get focusItemElement();
    private nzFormStatusService;
    private nzFormNoStatusService;
    constructor();
    ngOnInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    closeDropdown(): void;
    openDropdown(): void;
    getMentions(): string[];
    selectSuggestion(suggestion: string | {}): void;
    private handleInput;
    private handleKeydown;
    private handleClick;
    private bindTriggerEvents;
    private suggestionsFilter;
    private resetDropdown;
    private setNextItemActive;
    private setPreviousItemActive;
    private scrollToFocusItem;
    private canOpen;
    private resetCursorMention;
    private updatePositions;
    private subscribeOverlayOutsideClick;
    private attachOverlay;
    private getOverlayConfig;
    private getOverlayPosition;
    private setStatusStyles;
    static ɵfac: i0.ɵɵFactoryDeclaration<NzMentionComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<NzMentionComponent, "nz-mention", ["nzMention"], { "nzValueWith": { "alias": "nzValueWith"; "required": false; }; "nzPrefix": { "alias": "nzPrefix"; "required": false; }; "nzLoading": { "alias": "nzLoading"; "required": false; }; "nzNotFoundContent": { "alias": "nzNotFoundContent"; "required": false; }; "nzPlacement": { "alias": "nzPlacement"; "required": false; }; "nzSuggestions": { "alias": "nzSuggestions"; "required": false; }; "nzStatus": { "alias": "nzStatus"; "required": false; }; }, { "nzOnSelect": "nzOnSelect"; "nzOnSearchChange": "nzOnSearchChange"; }, ["suggestionChild"], ["*"], true, never>;
    static ngAcceptInputType_nzLoading: unknown;
}

declare class NzMentionSuggestionDirective {
    static ɵfac: i0.ɵɵFactoryDeclaration<NzMentionSuggestionDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NzMentionSuggestionDirective, "[nzMentionSuggestion]", ["nzMentionSuggestion"], {}, {}, never, never, true, never>;
}

declare class NzMentionModule {
    static ɵfac: i0.ɵɵFactoryDeclaration<NzMentionModule, never>;
    static ɵmod: i0.ɵɵNgModuleDeclaration<NzMentionModule, never, [typeof NzMentionComponent, typeof NzMentionTriggerDirective, typeof NzMentionSuggestionDirective], [typeof NzMentionComponent, typeof NzMentionTriggerDirective, typeof NzMentionSuggestionDirective]>;
    static ɵinj: i0.ɵɵInjectorDeclaration<NzMentionModule>;
}

declare class NzMentionService {
    private trigger?;
    private triggerChange$;
    constructor();
    triggerChanged(): Observable<NzMentionTriggerDirective>;
    registerTrigger(trigger: NzMentionTriggerDirective): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NzMentionService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<NzMentionService>;
}

export { NZ_MENTION_TRIGGER_ACCESSOR, NzMentionComponent, NzMentionModule, NzMentionService, NzMentionSuggestionDirective, NzMentionTriggerDirective };
export type { Mention, MentionOnSearchTypes, MentionPlacement };