UndoState.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2023 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.model.undo;
 
import net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import net.sf.gridarta.model.mapmodel.SavedSquares;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class UndoState<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> {
 
    @NotNull
    private final String name;
 
    @NotNull
    private final A mapArchObject;
 
    @Nullable
    private SavedSquares<G, A, R> savedSquares;
 
    public UndoState(@NotNull final String name, @NotNull final A mapArchObject) {
        this.name = name;
        this.mapArchObject = mapArchObject;
    }
 
    @NotNull
    public String getName() {
        return name;
    }
 
    public void setSavedSquares(@NotNull final SavedSquares<G, A, R> savedSquares) {
        if (this.savedSquares != null) {
            throw new IllegalStateException("saved squares already have been set");
        }
 
        this.savedSquares = savedSquares;
    }
 
    @NotNull
    public SavedSquares<G, A, R> getSavedSquares() {
        if (savedSquares == null) {
            throw new IllegalStateException("saved squares are unset");
        }
        return savedSquares;
    }
 
    @NotNull
    public A getMapArchObject() {
        return mapArchObject;
    }
 
}