import { FocusMonitor } from '@angular/cdk/a11y';
import { AfterContentInit, AfterViewInit, ElementRef, OnDestroy, Renderer2 } from '@angular/core';
import { KbqColorDirective, KbqTitleTextRef } from '@koobiq/components/core';
import * as i0 from "@angular/core";
export declare enum KbqButtonStyles {
    Filled = "filled",
    Outline = "outline",
    Transparent = "transparent"
}
export declare const buttonLeftIconClassName = "kbq-button-icon_left";
export declare const buttonRightIconClassName = "kbq-button-icon_right";
/**
 * Applies the `kbq-button`/`kbq-button-icon` host class and the left/right icon modifier classes.
 *
 * A button is treated as an icon button when its projected content consists only of `KbqIcon`s
 * and there are at most 2 of them. When icons are mixed with other content, only the outermost
 * icons receive the left/right classes.
 *
 * Must be used together with `KbqButton` (both match `[kbq-button]`): icon detection relies on
 * the `.kbq-button-wrapper` element rendered by the component's template.
 */
export declare class KbqButtonCssStyler implements AfterContentInit {
    private renderer;
    readonly icons: import("@angular/core").Signal<readonly any[]>;
    nativeElement: HTMLElement;
    /** Whether the button contains only icons (at most 2). */
    get isIconButton(): boolean;
    private readonly _isIconButton;
    private leftIcon;
    private rightIcon;
    constructor(elementRef: ElementRef<HTMLElement>, renderer: Renderer2);
    ngAfterContentInit(): void;
    updateClassModifierForIcons(): void;
    private updateIconClass;
    static ɵfac: i0.ɵɵFactoryDeclaration<KbqButtonCssStyler, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<KbqButtonCssStyler, "[kbq-button]", never, {}, {}, ["icons"], never, true, never>;
}
export declare class KbqButton extends KbqColorDirective implements OnDestroy, AfterViewInit, KbqTitleTextRef {
    private focusMonitor;
    protected styler: KbqButtonCssStyler;
    private readonly changeDetectorRef;
    hasFocus: boolean;
    textElement: ElementRef<HTMLElement>;
    /** The flex row that lays out the icons and text, used as the overflow width constraint. */
    parentTextElement: ElementRef<HTMLElement>;
    get kbqStyle(): string;
    set kbqStyle(value: string | KbqButtonStyles);
    private _kbqStyle;
    /** Whether the button is disabled. */
    get disabled(): boolean;
    set disabled(value: boolean);
    /** @docs-private */
    readonly disabledSignal: import("@angular/core").WritableSignal<boolean>;
    get tabIndex(): number;
    set tabIndex(value: number);
    private _tabIndex;
    constructor(focusMonitor: FocusMonitor, styler: KbqButtonCssStyler);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    onFocus(): void;
    onBlur(): void;
    getHostElement(): HTMLElement;
    focus(): void;
    focusViaKeyboard(): void;
    haltDisabledEvents: (event: Event) => void;
    private haltDisabledKeydownEvents;
    projectContentChanged(): void;
    private runFocusMonitor;
    private stopFocusMonitor;
    static ɵfac: i0.ɵɵFactoryDeclaration<KbqButton, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<KbqButton, "[kbq-button]", never, { "kbqStyle": { "alias": "kbqStyle"; "required": false; }; "disabled": { "alias": "disabled"; "required": false; }; "tabIndex": { "alias": "tabIndex"; "required": false; }; }, {}, never, ["[kbqButtonPrefix]", "*", "[kbqButtonSuffix]"], true, never>;
    static ngAcceptInputType_disabled: unknown;
    static ngAcceptInputType_tabIndex: unknown;
}