import { ICoreInjector } from '@tsdi/core';
import { IBinding } from './IBinding';
import { ComponentProvider } from '../ComponentProvider';
/**
 * property binding.
 *
 * @export
 * @abstract
 * @class DataBinding
 * @template T
 */
export declare abstract class PropBinding<T = any> {
    protected injector: ICoreInjector;
    protected provider: ComponentProvider;
    source: any;
    binding: IBinding;
    expression: string;
    constructor(injector: ICoreInjector, provider: ComponentProvider, source: any, binding: IBinding, expression: string);
    private map;
    private fields;
    getScope(): Map<string, any>;
    protected parser: (scope: Map<string, any>, envOptions?: any) => any;
    resolveExression(): T;
    private fieldExps;
    getFileds(): string[];
    /**
     * bind target.
     *
     * @abstract
     * @param {*} target
     * @param {*} [initVal]
     * @memberof ParseBinding
     */
    abstract bind(target: any, initVal?: any): void;
    bindTagChange(field: string, target: any): void;
    static ρAnn(): any;
}
/**
 * element template.
 *
 * @export
 * @interface ElementTemplate
 */
export interface ElementTemplate {
}
/**
 * binding
 */
export declare type Binding<T, Temp extends ElementTemplate = ElementTemplate> = string | PropBinding<T> | T | Temp;