import { Injector, PipeTransform } from '@angular/core';
import { FormElementRegistry, ViewRuleRegistry, FrameContext } from '@farris/devkit';
import { BehaviorSubject } from 'rxjs';
import { ToolbarPipe } from './toolbar_pipe';
export declare class ToolbarUsabilityPipe extends ToolbarPipe implements PipeTransform {
    protected injector: Injector;
    protected formElementRegistry: FormElementRegistry;
    private viewRuleRegistry;
    protected frameContext: FrameContext;
    private subjects;
    constructor(injector: Injector, formElementRegistry: FormElementRegistry, viewRuleRegistry: ViewRuleRegistry, frameContext: FrameContext);
    /**
     * 计算工具栏按钮是否可用
     * @param config - toolbarItem编号及其当前值
     * @param toolbarId - 工具栏id，非内部按钮项id
     * @param version - version
     * @description 按钮值为true时表示禁用，false时表示可用
     */
    transform(config: any, toolbarId: string, version: any): BehaviorSubject<any>;
}