import * as i0 from '@angular/core';
import { AfterViewInit, OnDestroy, OnInit, OnChanges, EventEmitter, TemplateRef, SimpleChanges, ElementRef } from '@angular/core';
import { Observable } from 'rxjs';
import * as i1 from '@eui/components/shared';

/**
 * Represents the four possible positions for a popover element.
 */
type EuiPopoverPosition = 'top' | 'right' | 'bottom' | 'left';

/**
 * @description
 * A flexible popover component that displays content in an overlay positioned relative to an origin element.
 *
 * The popover can be positioned at four different positions (top, right, bottom, left) relative to the
 * origin element, with automatic fallback positions if the preferred position doesn't fit in the viewport.
 * It supports various visual styles, dismissal behaviors, and size variants.
 *
 * @usageNotes
 * ### Basic usage
 * ```typescript
 * @ViewChild('popover') popover: EuiPopoverComponent;
 * @ViewChild('trigger') trigger: ElementRef;
 *
 * openPopover() {
 *   this.popover.openPopover(this.trigger);
 * }
 * ```
 * ```html
 * <button #trigger (click)="openPopover()">Open</button>
 * <eui-popover #popover title="Popover Title">
 *   <p>Popover content goes here</p>
 * </eui-popover>
 * ```
 *
 * ### With positioning
 * ```html
 * <eui-popover position="top" [width]="'300px'">
 *   Content
 * </eui-popover>
 * ```
 *
 * ### With backdrop
 * ```html
 * <eui-popover [hasBackDrop]="true" [isDismissable]="true">
 *   Content
 * </eui-popover>
 * ```
 *
 * ### Accessibility
 * - Escape key closes the popover when focused
 * - Focus trap keeps keyboard navigation within popover when open
 * - Close button provides clear dismissal option
 * - Backdrop click dismissal when `isDismissable` is true
 *
 * ### Notes
 * - Popover automatically repositions if preferred position doesn't fit viewport
 * - Use `hasNoContentPadding` to remove default content padding for custom layouts
 * - Listen to `popoverOpen` and `popoverClose` events for state management
 * - Popover closes automatically when origin element scrolls out of view
 */
declare class EuiPopoverComponent implements AfterViewInit, OnDestroy, OnInit, OnChanges {
    /**
     * Optional title text to display in the popover header.
     * When provided, adds a title element at the top of the popover content.
     */
    title: string;
    /**
     * Determines the preferred placement of the popover relative to its origin element.
     * The component will attempt to use this position first, falling back to alternatives
     * if there's not enough space in the viewport.
     *
     * @default 'bottom'
     */
    position: EuiPopoverPosition;
    /**
     * Custom width for the popover.
     * Can be specified in any valid CSS unit (px, %, em, etc).
     * When null, the popover width is determined by its content.
     *
     * @default null
     */
    width: string;
    /**
     * Whether to show a semi-transparent backdrop behind the popover.
     * When true, creates a visual overlay that dims the rest of the UI.
     *
     * @default false
     */
    hasBackDrop: boolean;
    /**
     * Whether to show a close button in the top-right corner of the popover.
     * When clicked, the close button will dismiss the popover.
     *
     * @default true
     */
    hasCloseButton: boolean;
    /**
     * Whether the popover can be dismissed by clicking outside its boundaries.
     * When false, the popover will remain open until explicitly closed via code
     * or by clicking the close button (if available).
     *
     * @default true
     */
    isDismissable: boolean;
    /**
     * If the content of the popover should receive a default padding
     *
     * @default false
     */
    hasNoContentPadding: boolean;
    /**
     * Event emitted when a click occurs outside the popover boundaries.
     * Only emitted when isDismissable is true.
     */
    outsideClick: EventEmitter<any>;
    /**
     * Event emitted when the popover is opened.
     * Fires after the popover content has been attached to the DOM and positioned.
     */
    popoverOpen: EventEmitter<any>;
    /**
     * Event emitted when the popover is closed.
     * Fires after the popover content has been removed from the DOM.
     */
    popoverClose: EventEmitter<any>;
    position$: Observable<[EuiPopoverPosition, DOMRect]>;
    templatePortalContent: TemplateRef<unknown>;
    private templatePortal;
    private overlayRef;
    private destroy$;
    private isOpen$;
    private scrollDispatcherSubscription;
    private origin;
    private preferredPositons;
    private positionStrategy;
    private positionStrategyUpdate$;
    private overlay;
    private viewContainerRef;
    private scrollDispatcher;
    private baseStatesDirective;
    ngOnChanges(c: SimpleChanges): void;
    ngOnInit(): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    /**
     * Whether the eui-popover is open.
     *
     * @usageNotes
     * ```HTML
     * <eui-popover #popover>
     *     @if (popover.isOpen) {
     *          <my-component></my-component>
     *     }
     * </eui-popover>
     * ```
     * @returns A boolean with value `true` when open, otherwise `false`.
     */
    get isOpen(): boolean;
    /**
     * Updates the position strategy when content changes.
     * Recalculates and updates the overlay position to handle content size changes.
     */
    onContentChange(): void;
    /**
     * Opens the popover relative to the provided origin element.
     * Sets up scroll monitoring, position strategy, and attaches the popover content to the overlay.
     * Emits the popoverOpen event when complete.
     *
     * @param origin - Reference to the element that triggers the popover
     */
    openPopover(origin: ElementRef): void;
    /**
     * Closes the popover.
     * Cleans up subscriptions, disposes the overlay, and emits the popoverClose event.
     */
    closePopover(): void;
    /**
     * Handles keyboard events to allow closing the popover with the Escape key.
     * Can be used as an alternative to the close button or when hasCloseButton is false.
     *
     * @param event - The keyboard event
     */
    onKeyDown(event: KeyboardEvent): void;
    /**
     * Checks whether the origin element is currently visible within the scrollable parent's viewport.
     * Used to determine if the popover should remain open during scroll events.
     *
     * @param origin - The HTML element that triggers the popover
     * @param scrollableParent - The scrollable container element
     * @returns True if the origin element is visible in the viewport, otherwise false
     */
    private isVisible;
    /**
     * Creates and returns a position strategy for the overlay.
     * Configures the overlay to be positioned relative to the origin element
     * with fallback positions if the preferred one doesn't fit.
     *
     * @returns A flexible connected position strategy configured for the popover
     */
    private getPositionStrategy;
    /**
     * Sets up the position stream for the arrow positioning directive.
     * Creates an observable that emits the current popover position and the origin element's bounding rectangle
     * whenever the popover's position changes.
     */
    private setPositionStream;
    static ɵfac: i0.ɵɵFactoryDeclaration<EuiPopoverComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<EuiPopoverComponent, "eui-popover", never, { "title": { "alias": "title"; "required": false; }; "position": { "alias": "position"; "required": false; }; "width": { "alias": "width"; "required": false; }; "hasBackDrop": { "alias": "hasBackDrop"; "required": false; }; "hasCloseButton": { "alias": "hasCloseButton"; "required": false; }; "isDismissable": { "alias": "isDismissable"; "required": false; }; "hasNoContentPadding": { "alias": "hasNoContentPadding"; "required": false; }; }, { "outsideClick": "outsideClick"; "popoverOpen": "popoverOpen"; "popoverClose": "popoverClose"; }, never, ["*"], true, [{ directive: typeof i1.BaseStatesDirective; inputs: { "euiSizeS": "euiSizeS"; "euiSizeM": "euiSizeM"; "euiSizeL": "euiSizeL"; "euiSizeXL": "euiSizeXL"; "euiSize2XL": "euiSize2XL"; "euiSizeAuto": "euiSizeAuto"; "euiSizeVariant": "euiSizeVariant"; }; outputs: {}; }]>;
    static ngAcceptInputType_hasBackDrop: unknown;
    static ngAcceptInputType_hasCloseButton: unknown;
    static ngAcceptInputType_isDismissable: unknown;
    static ngAcceptInputType_hasNoContentPadding: unknown;
}

declare const EUI_POPOVER: readonly [typeof EuiPopoverComponent];

export { EUI_POPOVER, EuiPopoverComponent };
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