/*
* WorldEdit, a Minecraft world manipulation toolkit
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldEdit team and contributors
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.extent;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.Vector2D;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.entity.BaseEntity;
import com.sk89q.worldedit.entity.Entity;
import com.sk89q.worldedit.function.operation.Operation;
import com.sk89q.worldedit.function.operation.OperationQueue;
import com.sk89q.worldedit.util.Location;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.world.biome.BaseBiome;
import javax.annotation.Nullable;
import java.util.List;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* A base class for {@link Extent}s that merely passes extents onto another.
*/
public abstract class AbstractDelegateExtent implements Extent {
private final Extent extent;
/**
* Create a new instance.
*
* @param extent the extent
*/
protected AbstractDelegateExtent(Extent extent) {
checkNotNull(extent);
this.extent = extent;
}
/**
* Get the extent.
*
* @return the extent
*/
public Extent getExtent() {
return extent;
}
@Override
public BaseBlock getBlock(Vector position) {
return extent.getBlock(position);
}
@Override
public BaseBlock getLazyBlock(Vector position) {
return extent.getLazyBlock(position);
}
@Override
public boolean setBlock(Vector location, BaseBlock block) throws WorldEditException {
return extent.setBlock(location, block);
}
@Override
@Nullable
public Entity createEntity(Location location, BaseEntity entity) {
return extent.createEntity(location, entity);
}
@Override
public List<? extends Entity> getEntities() {
return extent.getEntities();
}
@Override
public List<? extends Entity> getEntities(Region region) {
return extent.getEntities(region);
}
@Override
public BaseBiome getBiome(Vector2D position) {
return extent.getBiome(position);
}
@Override
public boolean setBiome(Vector2D position, BaseBiome biome) {
return extent.setBiome(position, biome);
}
@Override
public Vector getMinimumPoint() {
return extent.getMinimumPoint();
}
@Override
public Vector getMaximumPoint() {
return extent.getMaximumPoint();
}
protected Operation commitBefore() {
return null;
}
@Override
public final @Nullable Operation commit() {
Operation ours = commitBefore();
Operation other = extent.commit();
if (ours != null && other != null) {
return new OperationQueue(ours, other);
} else if (ours != null) {
return ours;
} else if (other != null) {
return other;
} else {
return null;
}
}
}