dateformatter.java

来自「OperaMasks是一种基于J2EE的Web开发技术」· Java 代码 · 共 54 行

/*
 * $Id: DateFormatter.java,v 1.1 2008/07/23 09:27:13 suwei Exp $
 *
 * Copyright (C) 2006 Operamasks Community.
 * Copyright (C) 2000-2006 Apusic Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see http://www.gnu.org/licenses.
 */
package demo.grid;

import java.text.SimpleDateFormat;
import java.util.Date;

import javax.faces.context.FacesContext;
import javax.faces.convert.DateTimeConverter;

import org.operamasks.faces.annotation.Convert;
import org.operamasks.faces.annotation.DefineConverter;
import org.operamasks.faces.annotation.Format;
import org.operamasks.faces.component.layout.UIFacelet;

@DefineConverter(id="outputDateFormatter")
public class DateFormatter {
    @Format
    public String format(Object value) {
        if (value instanceof Date) {
            SimpleDateFormat formatter = (SimpleDateFormat) SimpleDateFormat.getInstance();
            formatter.applyPattern("yyyy-MM-dd");
            return formatter.format(value);
        }
        return value == null ? "" : value.toString();
    }
    
    @Convert
    public Object convert(String value) {
        FacesContext context = FacesContext.getCurrentInstance();
        DateTimeConverter converter = (DateTimeConverter)context.getApplication().createConverter(DateTimeConverter.CONVERTER_ID);
        converter.setPattern("yyyy-MM-dd");
        return converter.getAsObject(context, new UIFacelet(), value);
    }

}