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DellRoad Stuff classes related to the Vaadin GUI framework.

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/*
 * Copyright (C) 2022 Archie L. Cobbs. All rights reserved.
 */

package org.dellroad.stuff.vaadin7;

import java.util.List;

/**
 * Simple {@link QueryList} implementation using a normal {@link List}.
 *
 * @see AbstractQueryContainer
 */
public class SimpleQueryList implements QueryList {

    private final List list;

    /**
     * Constructor.
     *
     * @param list backing list
     * @throws IllegalArgumentException if {@code list} is null
     */
    public SimpleQueryList(List list) {
        if (list == null)
            throw new IllegalArgumentException("null list");
        this.list = list;
    }

    @Override
    public long size() {
        return this.list.size();
    }

    @Override
    public T get(long index) {
        if (index > Integer.MAX_VALUE || index < Integer.MIN_VALUE)
            throw new IndexOutOfBoundsException("index = " + index);
        return this.list.get((int)index);
    }
}