import { BooleanInput } from '@angular/cdk/coercion';
import { AfterViewChecked, ElementRef, ErrorHandler, InjectionToken, OnDestroy, OnInit } from '@angular/core';
import { DashIconRegistry } from '../utils/dash-registry';
import * as i0 from "@angular/core";
/**
 * Injection token used to provide the current location to `DashIcon`.
 * Used to handle server-side rendering and to stub out during unit tests.
 * @docs-private
 */
export declare const DASH_ICON_LOCATION: InjectionToken<DashIconLocation>;
/**
 * Stubbed out location for `DashIcon`.
 * @docs-private
 */
export interface DashIconLocation {
    getPathname: () => string;
}
export declare function DASH_ICON_LOCATION_FACTORY(): DashIconLocation;
export declare class DashIcon implements OnInit, AfterViewChecked, OnDestroy {
    private _iconRegistry;
    private _location;
    private readonly _errorHandler;
    _elementRef: ElementRef;
    /**
     * Whether the icon should be inlined, automatically sizing the icon to match the font size of
     * the element the icon is contained in.
     */
    get inline(): boolean;
    set inline(inline: BooleanInput);
    private _inline;
    /** Name of the icon in the SVG icon set. */
    get svgIcon(): string;
    set svgIcon(value: string);
    private _svgIcon;
    _svgName: string | null;
    _svgNamespace: string | null;
    /** Keeps track of the current page path. */
    private _previousPath?;
    /** Keeps track of the elements and attributes that we've prefixed with the current path. */
    private _elementsWithExternalReferences?;
    /** Subscription to the current in-progress SVG icon request. */
    private _currentIconFetch;
    constructor(elementRef: ElementRef<HTMLElement>, _iconRegistry: DashIconRegistry, ariaHidden: string, _location: DashIconLocation, _errorHandler: ErrorHandler, _elementRef: ElementRef);
    /**
     * Splits an svgIcon binding value into its icon set and icon name components.
     * Returns a 2-element array of [(icon set), (icon name)].
     * The separator for the two fields is ':'. If there is no separator, an empty
     * string is returned for the icon set and the entire value is returned for
     * the icon name. If the argument is falsy, returns an array of two empty strings.
     * Throws an error if the name contains two or more ':' separators.
     * Examples:
     *   `'social:cake' -> ['social', 'cake']
     *   'penguin' -> ['', 'penguin']
     *   null -> ['', '']
     *   'a:b:c' -> (throws Error)`
     */
    private _splitIconName;
    ngOnInit(): void;
    ngAfterViewChecked(): void;
    private _setSvgElement;
    private _clearSvgElement;
    /**
     * Prepends the current path to all elements that have an attribute pointing to a `FuncIRI`
     * reference. This is required because WebKit browsers require references to be prefixed with
     * the current path, if the page has a `base` tag.
     */
    private _prependPathToReferences;
    /**
     * Caches the children of an SVG element that have `url()`
     * references that we need to prefix with the current path.
     */
    private _cacheChildrenWithExternalReferences;
    /** Sets a new SVG icon with a particular name. */
    private _updateSvgIcon;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DashIcon, [null, null, { attribute: "aria-hidden"; }, null, null, null]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DashIcon, "dash-icon", ["dashIcon"], { "color": "color"; "inline": "inline"; "svgIcon": "svgIcon"; }, {}, never, ["*"]>;
}