com.tonbeller.wcf.convert.SelectMultipleConverter.java Source code

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Here is the source code for com.tonbeller.wcf.convert.SelectMultipleConverter.java

Source

/*
 * ====================================================================
 * This software is subject to the terms of the Common Public License
 * Agreement, available at the following URL:
 *   http://www.opensource.org/licenses/cpl.html .
 * Copyright (C) 2003-2004 TONBELLER AG.
 * All Rights Reserved.
 * You must accept the terms of that agreement to use this software.
 * ====================================================================
 *
 * 
 */
package com.tonbeller.wcf.convert;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.beanutils.PropertyUtils;
import org.w3c.dom.Element;

import com.tonbeller.wcf.format.FormatException;
import com.tonbeller.wcf.format.FormatHandler;
import com.tonbeller.wcf.format.Formatter;
import com.tonbeller.wcf.ui.Item;
import com.tonbeller.wcf.ui.SelectMultiple;

/**
 * sets an array bean property. The values of all selected items are collected in an
 * array and the bean property is set to that array. If no items are selected, the
 * bean property will contain an empty array.
 * <p>
 * An items value is the value attribute of the elected item. 
 * For type conversion the type, modelReference and formatString attributes
 * will be taken from the items parent (e.g. the listBox).
 * 
 * @author av
 */
public class SelectMultipleConverter extends SelectConverterBase {

    /**
     * @see com.tonbeller.wcf.convert.SelectConverterBase#updateModelReference(Formatter, Map, Element, Object)
     */
    protected void updateModelReference(Formatter fmt, Element elem, Object bean)
            throws FormatException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {

        String model = SelectMultiple.getModelReference(elem);
        if (model.length() == 0)
            return;

        String type = SelectMultiple.getType(elem);
        String formatString = SelectMultiple.getFormatString(elem);
        FormatHandler parser = fmt.getHandler(type);
        if (parser == null)
            throw new FormatException("no handler found for type: " + type);

        List items = SelectMultiple.getSelectedItems(elem);
        checkRequired(fmt.getLocale(), elem, items.size() == 0);
        List values = new ArrayList();

        for (Iterator it = items.iterator(); it.hasNext();) {
            Element item = (Element) it.next();
            String valueString = Item.getValue(item);
            Object value = parser.parse(valueString, formatString);
            values.add(value);
        }

        PropertyUtils.setProperty(bean, model, parser.toNativeArray(values));
    }

}