import { AfterContentChecked, AfterContentInit, ChangeDetectorRef, ElementRef, EventEmitter, NgZone, OnChanges, OnDestroy, OnInit, SimpleChange, ViewContainerRef } from '@angular/core';
import { TsPopoverOptions, TsPopoverPosition } from './popover-options';
import { TsPopoverComponent } from './popover.component';
/**
 * A directive that adds popover trigger functionality
 *
 * @example
 * <button
 *              tsPopoverTrigger="popper1"
 *              [defaultOpened]="defaultOpened"
 *              [hideOnBlur]="false"
 *              id="my-id"
 *              [popover]="popper1"
 *              [position]="position"
 *              (popoverOnCreate)="myFunction($event)"
 *              (popoverOnShown)="myFunction($event)"
 *              (popoverOnHidden)="myFunction($event)"
 *              (popoverOnUpdate)="myFunction($event)"
 * />
 *
 * <example-url>https://getterminus.github.io/ui-demos-release/components/popover</example-url>
 */
export declare class TsPopoverTriggerDirective implements OnInit, OnDestroy, OnChanges, AfterContentInit, AfterContentChecked {
    private viewContainerRef;
    private changeDetectorRef;
    private elementRef;
    private ngZone;
    /**
     * Define the UID
     */
    readonly uid: string;
    /**
     * Default options for popper
     *
     * For now we only support click, so it specifies click here. But could support more if needed.
     */
    static defaultOptions: TsPopoverOptions;
    /**
     * Whether current popover is open or not.
     */
    isOpen: boolean;
    /**
     * Whether popover is opened on load.
     */
    defaultOpened: boolean;
    /**
     * Whether popover closes when click outside.
     */
    hideOnBlur: boolean;
    /**
     * Define an ID for the directive
     *
     * @param value
     */
    set id(value: string);
    get id(): string;
    protected _id: string;
    /**
     * TsPopoverComponent provided as an input
     */
    popover: TsPopoverComponent;
    /**
     * Set position of where popover opens
     *
     * @param value
     */
    set position(value: TsPopoverPosition);
    get position(): TsPopoverPosition;
    _position: TsPopoverPosition;
    /**
     * Emit when create popover.
     */
    readonly popoverOnCreate: EventEmitter<TsPopoverComponent>;
    /**
     * Emit when popover is shown.
     */
    readonly popoverOnShown: EventEmitter<TsPopoverComponent>;
    /**
     * Emit when popover is hidden.
     */
    readonly popoverOnHidden: EventEmitter<TsPopoverComponent>;
    /**
     * Emit when popover is updated.
     */
    readonly popoverOnUpdate: EventEmitter<TsPopoverComponent>;
    /**
     * Register the click to decide whether it's inside the element or out.
     *
     * @param targetElement
     */
    onClick(targetElement: HTMLElement): void;
    constructor(viewContainerRef: ViewContainerRef, changeDetectorRef: ChangeDetectorRef, elementRef: ElementRef, ngZone: NgZone);
    /**
     * When directive initiated, it assigns a reference to popover component and also register on click event.
     */
    ngOnInit(): void;
    /**
     * After the default change detector has completed checking all content, it decides on popover status based on defaultOpened input.
     */
    ngAfterContentInit(): void;
    /**
     * Once content is initialized and checked, assign custom id to popover id
     */
    ngAfterContentChecked(): void;
    /**
     * When changes happen, assign current position value to popover's popoverOption
     *
     * @param changes - SimpleChange
     */
    ngOnChanges(changes: {
        [propertyName: string]: SimpleChange;
    }): void;
    /**
     * Needed for untilComponentDestroyed
     */
    ngOnDestroy(): void;
    /**
     * Set popover options
     *
     * @param popperRef - TsPopoverComponent
     */
    setContentProperties(popperRef: TsPopoverComponent): void;
    /**
     * Toggle between show and hide.
     */
    toggle(): void;
    /**
     * Hide the popover.
     */
    hide(): void;
    /**
     * Show the popover.
     */
    show(): void;
}