import { OnInit } from '@angular/core';
import { FormControl } from '@angular/forms';
import { MatRadioChange } from '@angular/material/radio';
import { MatSelectChange } from '@angular/material/select';
import { DropdownItem, FormOptionSelector, MultipleChoiceItem, StringOption } from '../../models/index';
import { MtnaWfUIService } from '../core/services/index';
import { BaseParentItemControl } from './base-parent-item-control.component';
export declare abstract class BaseSingleSelectionParent<I extends DropdownItem | MultipleChoiceItem> extends BaseParentItemControl<I, FormControl> implements OnInit {
    protected uiService: MtnaWfUIService;
    /**
     * `MatRadioChange` and `MatSelectChange` output only the newly selected option.
     * We use this to toggle items of a previously selected option.
     */
    protected selectedOption: FormOptionSelector<StringOption>;
    constructor(uiService: MtnaWfUIService);
    ngOnInit(): void;
    /**
     * Toggles the 'selected' value of the previous & newly selected options,
     * then calls toggleFormItems to change their enabled/disabled items
     * @param change MatRadioChange from the radio group
     */
    selectionChange(change: MatRadioChange | MatSelectChange): void;
}