import { History, RootComponentRef, Scheduler } from '@textbus/core';
import { Observable } from '@tanbo/stream';
import { Item, Transaction } from 'yjs';
import { Collaborate } from './collaborate';
export declare abstract class CustomUndoManagerConfig {
    abstract captureTransaction?(arg0: Transaction): boolean;
    abstract deleteFilter?(arg0: Item): boolean;
}
export declare class CollabHistory implements History {
    private rootComponentRef;
    private collaborate;
    private scheduler;
    private stackSize;
    private undoManagerConfig;
    onBack: Observable<void>;
    onForward: Observable<void>;
    onChange: Observable<void>;
    onPush: Observable<void>;
    get canBack(): boolean;
    get canForward(): boolean;
    private manager;
    private historyItems;
    private index;
    private subscriptions;
    private backEvent;
    private forwardEvent;
    private changeEvent;
    private pushEvent;
    constructor(rootComponentRef: RootComponentRef, collaborate: Collaborate, scheduler: Scheduler, stackSize: number, undoManagerConfig: CustomUndoManagerConfig);
    listen(): void;
    back(): void;
    forward(): void;
    clear(): void;
    destroy(): void;
}