ketcher-core
Version:
Web-based molecule sketcher
33 lines (32 loc) • 1.39 kB
TypeScript
/****************************************************************************
* Copyright 2021 EPAM Systems
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
import type { Command } from "../../domain/entities/Command";
import type { CoreEditor } from './Editor';
export declare type HistoryOperationType = 'undo' | 'redo';
export declare class EditorHistory {
historyStack: Command[] | [];
historyPointer: number;
editor: CoreEditor;
private static _instance;
constructor(editor: CoreEditor);
static getInstance(editor: CoreEditor): EditorHistory;
private static isInstance;
update(command: Command, megreWithLatestHistoryCommand?: boolean): void;
undo(): void;
redo(): void;
get previousCommand(): Command;
destroy(): void;
}