NativeList.java

/*
 * Copyright 2004-2012 the Seasar Foundation and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.seasar.mayaa.impl.cycle.script.rhino;

import java.util.List;

import org.mozilla.javascript.NativeJavaObject;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.Undefined;

/**
 * @author Masataka Kurihara (Gluegent, Inc.)
 */
public class NativeList extends NativeJavaObject {

    private static final long serialVersionUID = -1963435161453782180L;
    private List _list;

    public NativeList(Scriptable scope, List list) {
        super(scope, list, List.class);
        if (list == null) {
            throw new IllegalArgumentException();
        }
        _list = list;
    }

    public boolean has(int index, Scriptable start) {
        return 0 <= index && index < _list.size();
    }

    public Object get(int index, Scriptable start) {
        if (0 <= index && index < _list.size()) {
            return _list.get(index);
        }
        return Undefined.instance;
    }

    public void put(int index, Scriptable start, Object value) {
        if (index == _list.size()) {
            _list.add(value);
        } else if (0 < index) {
            for (int i = _list.size(); i <= index; i++) {
                _list.add(Undefined.instance);
            }
            _list.set(index, value);
        }
    }

    public Object[] getIds() {
        int listSize = _list.size();
        Object[] ids = super.getIds();
        Object[] ret = new Object[listSize + ids.length];
        for (int i = 0; i < listSize; i++) {
            ret[i] = new Integer(i);
        }
        for (int i = 0; i < ids.length; i++) {
            ret[i + listSize] = ids[i];
        }
        return ret;
    }

    public String getClassName() {
        return "javaList";
    }

}