org.jmesa.view.editor.NumberCellEditor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jmesa Show documentation
jmesa
The newest version!
/*
 * Copyright 2004 original author or authors.
 *
 * 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.jmesa.view.editor;

import org.jmesa.util.ItemUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;

/**
 * An editor to work with numbers. Just send in a valid number pattern and the number will be
 * formated.
 *
 * @since 2.2
 * @author Jeff Johnston
 */
public class NumberCellEditor extends AbstractPatternCellEditor {

    private Logger logger = LoggerFactory.getLogger(NumberCellEditor.class);

    public NumberCellEditor() {}

    /**
     * @param pattern The pattern to use.
     */
    public NumberCellEditor(String pattern) {

        setPattern(pattern);
    }

    /**
     * Get the formatted number value based on the pattern set.
     */
    @Override
    public Object getValue(Object item, String property, int rowcount) {

        Object itemValue = null;

        try {
            itemValue = ItemUtils.getItemValue(item, property);
            if (itemValue == null) {
                return null;
            }

            Locale locale = getWebContext().getLocale();
            NumberFormat nf = NumberFormat.getInstance(locale);
            DecimalFormat df = (DecimalFormat) nf;
            df.applyPattern(getPattern());
            itemValue = df.format(itemValue);
        } catch (Exception e) {
            logger.warn("Could not process number editor with property " + property);
        }

        return itemValue;
    }
}