src/app/custom_modules/undo-redo-stack/commands/base-command.ts

/*
******************************************************************************
* Copyright © 2018 PTA GmbH.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
*
*     http://www.eclipse.org/legal/epl-v10.html
*
******************************************************************************
*/
import { Command } from './command';

export abstract class BaseCommand implements Command {
    abstract undo();
    abstract redo();

    mergePossible( newerCommand: Command ): boolean {
        return false;
    }
    abstract merge( newerCommand: Command): Command;
}