import { BehaviorSubject } from 'rxjs';
import { MaybeObservable } from '../../util/reactUtil';
import FormElement, { EditableFieldModel, FormElementOptions } from '../FormElement';
import { FieldModelLike, FieldViewLike, ViewRef } from '../formTypes';
export declare type FieldAlignment = 'left' | 'center' | 'right';
export interface FieldModelOptions extends FormElementOptions {
    sectionIndex: number;
    rowIndex: number;
    fieldIndex: number;
    align?: FieldAlignment;
    flex?: number;
    /** Whether to show this field. */
    visible?: MaybeObservable<boolean>;
}
export default class FieldModel<View extends FieldViewLike = any> extends FormElement implements FieldModelLike<View> {
    readonly errors: BehaviorSubject<Error[]>;
    sectionIndex: number;
    rowIndex: number;
    fieldIndex: number;
    align: FieldAlignment;
    flex?: number;
    visible: MaybeObservable<boolean>;
    viewRef?: ViewRef<View>;
    /**
     * Whether this field is currently rendered on the screen.
     * Do not set this value directly.
     */
    isMounted: boolean;
    constructor(options: FieldModelOptions);
    isEditable(): this is EditableFieldModel;
    /**
     * Called after the view is mounted.
     *
     * Subclasses must call the super implementation.
     */
    onMount(viewRef: ViewRef<View>): void;
    /** Called before the view is unmounted.
     *
     * Subclasses must call the super implementation.
     */
    onUnmount(viewRef: ViewRef<View>): void;
}