import { Signal, WritableSignal } from '@angular/core';
import { FormBuilder, FormGroup } from '@angular/forms';
import { DataExtendItem, DataType } from './data-extend.types';
import * as i0 from "@angular/core";
export declare class DataExtendComponent {
    private fb;
    properties: import("@angular/core").InputSignal<DataExtendItem[]>;
    extendDataEvent: import("@angular/core").OutputEmitterRef<DataExtendItem[]>;
    items: WritableSignal<DataExtendItem[]>;
    showAll: WritableSignal<boolean>;
    visibleItems: Signal<DataExtendItem[]>;
    form: FormGroup;
    selectedItem: DataExtendItem | null;
    dataTypes: DataType[];
    constructor(fb: FormBuilder);
    toggleShowAll(): void;
    addItem(): void;
    removeItem(index: number): void;
    save(): void;
    cancel(): void;
    reset(): void;
    editItem(index: number): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DataExtendComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DataExtendComponent, "lib-data-extend", never, { "properties": { "alias": "properties"; "required": false; "isSignal": true; }; }, { "extendDataEvent": "extendDataEvent"; }, never, never, false, never>;
}