BlockPistonExtendEvent.java

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package org.bukkit.event.block;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.event.HandlerList;

public class BlockPistonExtendEvent extends BlockPistonEvent {
    private static final HandlerList handlers = new HandlerList();
    private final int length;
    private List<Block> blocks;

    public BlockPistonExtendEvent(final Block block, final int length, final BlockFace direction) {
        super(block, direction);

        this.length = length;
    }

    public int getLength() {
        return this.length;
    }

    public List<Block> getBlocks() {
        if (blocks == null) {
            ArrayList<Block> tmp = new ArrayList<Block>();
            for (int i = 0; i < this.getLength(); i++) {
                tmp.add(block.getRelative(getDirection(), i + 1));
            }
            blocks = Collections.unmodifiableList(tmp);
        }
        return blocks;
    }

    @Override
    public HandlerList getHandlers() {
        return handlers;
    }

    public static HandlerList getHandlerList() {
        return handlers;
    }
}