import { ElementRef, EventEmitter } from '@angular/core';
import { BooleanInput } from '@angular/cdk/coercion';
import { CanColor, CanColorCtor, CanDisable, CanDisableCtor } from '@angular/material/core';
export interface FilterOption<T> {
    value: T;
    label: string;
    group?: unknown;
    selected?: boolean;
}
interface FilterOptionState<T> extends FilterOption<T> {
    visible: boolean;
    selected: boolean;
}
export declare type ExpandableContentPosition = 'before' | 'after';
/** @docs-private */
declare class ComponentBase {
    _elementRef: ElementRef;
    constructor(_elementRef: ElementRef);
}
declare const _ComponentMixinBase: CanColorCtor & CanDisableCtor & typeof ComponentBase;
export declare class ExpandableFilterComponent<T> extends _ComponentMixinBase implements CanColor, CanDisable {
    constructor(elementRef: ElementRef);
    get open(): boolean;
    set open(v: boolean);
    private _open;
    static ngAcceptInputType_open: BooleanInput;
    openChange: EventEmitter<boolean>;
    selectionChange: EventEmitter<T[]>;
    set options(v: FilterOption<T>[]);
    tooltip?: string;
    contentPosition: ExpandableContentPosition;
    set disabled(v: boolean);
    static ngAcceptInputType_disabled: BooleanInput;
    optionsState: FilterOptionState<T>[];
    private getOptionState;
    setOpen(v: boolean): void;
    private clearSelection;
    private updateSelection;
    onSelection(option: FilterOptionState<T>, selected: boolean): void;
    onFocusOut(): void;
}
export {};