import * as React from 'react';
import { providers } from '@logilab/cwclientlibjs';
import { EntityRelationsEditor, RelationStatus, EntityRelationsEditorProps, EntityRelationsEditorState, EntityRelationsSpecification } from './EntityRelationsEditor';
import { TranslationContext } from './commons';
/**
 * The props for a relation editor for selecting a single related entity
 */
export interface SingleEntityRelationsEditorProps extends EntityRelationsEditorProps {
    /**
     * Lookups relatable entities using the specified input
     * @param specification The specification for the related entities
     */
    lookupRelatableEntities: (specification: EntityRelationsSpecification) => Promise<providers.Entity[]>;
}
/**
 * The state for a relation editor for selecting a single related entity
 */
export interface SingleEntityRelationsEditorState extends EntityRelationsEditorState {
    /**
     * The currently selected entity
     */
    selected: providers.Entity | null;
}
/**
 * The default props for an editor of entity relations
 */
export declare const ENTITY_RELATIONS_EDITOR_SINGLE_PROPS: {
    className: string;
    lookupLimitRelatable: number;
    lookupLimitRelated: number;
    baseChanges: {
        added: never[];
        removed: never[];
    };
    lookupRelatableEntities: (specification: EntityRelationsSpecification) => Promise<providers.Entity[]>;
    renderLookup: (component: EntityRelationsEditor) => null;
    renderRelatable: (component: EntityRelationsEditor, entity: providers.Entity, status: RelationStatus) => JSX.Element;
    renderContentRelatables: (component: SingleEntityRelationsEditor) => JSX.Element;
    renderContentLoading: (component: EntityRelationsEditor) => JSX.Element;
    renderButtonValidate: (component: EntityRelationsEditor) => JSX.Element;
    renderButtonCancel: (component: EntityRelationsEditor) => JSX.Element;
    render: (component: EntityRelationsEditor) => JSX.Element;
};
/**
 * The editor of entity relations in the special case of
 * a cardinality of max 1 for the relatables
 */
export declare class SingleEntityRelationsEditor extends React.Component<SingleEntityRelationsEditorProps, SingleEntityRelationsEditorState> implements EntityRelationsEditor<SingleEntityRelationsEditorProps, SingleEntityRelationsEditorState> {
    static contextType: React.Context<import("./commons").TranslationContextType>;
    context: React.ContextType<typeof TranslationContext>;
    static defaultProps: {
        className: string;
        lookupLimitRelatable: number;
        lookupLimitRelated: number;
        baseChanges: {
            added: never[];
            removed: never[];
        };
        lookupRelatableEntities: (specification: EntityRelationsSpecification) => Promise<providers.Entity[]>;
        renderLookup: (component: EntityRelationsEditor<EntityRelationsEditorProps, EntityRelationsEditorState>) => null;
        renderRelatable: (component: EntityRelationsEditor<EntityRelationsEditorProps, EntityRelationsEditorState>, entity: providers.Entity, status: RelationStatus) => JSX.Element;
        renderContentRelatables: (component: SingleEntityRelationsEditor) => JSX.Element;
        renderContentLoading: (component: EntityRelationsEditor<EntityRelationsEditorProps, EntityRelationsEditorState>) => JSX.Element;
        renderButtonValidate: (component: EntityRelationsEditor<EntityRelationsEditorProps, EntityRelationsEditorState>) => JSX.Element;
        renderButtonCancel: (component: EntityRelationsEditor<EntityRelationsEditorProps, EntityRelationsEditorState>) => JSX.Element;
        render: (component: EntityRelationsEditor<EntityRelationsEditorProps, EntityRelationsEditorState>) => JSX.Element;
    };
    state: SingleEntityRelationsEditorState;
    _isMounted: boolean;
    constructor(props: Readonly<SingleEntityRelationsEditorProps>);
    componentDidMount(): void;
    componentWillUnmount(): void;
    onLookupLoading(): void;
    onLookupResult(result: providers.Entity[]): void;
    onSelect(event: React.FormEvent<HTMLSelectElement>): void;
    onToggle(entity: providers.Entity, isRelated: boolean): void;
    render(): JSX.Element;
}