import { WidgetContext } from './widget.context';
import { FormatDefinition } from 'ajv';
import { ValidatorFn } from '@angular/forms/src/directives/validators';
export declare abstract class WidgetRegistry {
    private widgets;
    private _formats;
    /**
     * Default widget to render when none are found
     */
    protected defaultWidget: any;
    /**
     * Sets up the registry.
     */
    constructor();
    /**
     * Returns custom formats.
     */
    readonly formats: {
        [type: string]: {
            format: FormatDefinition;
        };
    };
    /**
     * Returns true if widget for given type exists.
     *
     * @param type Widget type
     */
    hasWidget(type: string): boolean;
    /**
     * Registers a new widget type.
     *
     * @param type Type
     * @param widget Widget component
     * @param context Widget context
     */
    register<T extends WidgetContext<any>>(type: string, widget: any, context: T): void;
    /**
     * Registers a new format for the schema validator.
     *
     * @param type Format type (date, myFormat)
     * @param format Format options and validation
     */
    registerFormat<T extends WidgetContext<any>>(type: string, format: FormatDefinition): void;
    /**
     * Gets a widget entry for give type.
     *
     * @param type Widget type
     */
    getWidgetType(type: string): {
        widget: any;
        context: WidgetContext<any>;
    };
    /**
     * Returns list of supported widget types.
     */
    getSupportedTyped(): Array<string>;
    /**
     * Register widgets.
     */
    protected abstract registerWidgets(): any;
    /**
     * Register formatters.
     */
    protected abstract registerFormatters(): any;
    /**
     * Build validator array for given schema and arguments.
     *
     * @param schema Schema
     * @param parentSchema Parent schema
     * @param required True if field is required
     */
    abstract getFormValidator(schema: any, parentSchema: any, required: boolean): ValidatorFn | ValidatorFn[];
    /**
     * Parse a form error and return a human readable error.
     *
     * @param key Error key
     * @param controlName FormControl name
     * @param schema Schema affected
     * @param detail Error details
     */
    abstract getValidatorError(key: string, controlName: string, schema: any, detail: any): string;
}