resourcefieldelementfactory.java

swing编写的库存管理程序。毕业设计类

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner;
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * ------------------------------
 * ResourceFieldElementFactory
 * ------------------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: ResourceFieldElementFactory.java,v 1.7 2003/11/01 19:52:27 taqua Exp $
 *
 * Changes
 * -------------------------
 * 06-Jul-2003 : Initial version
 *
 */

package org.jfree.report.elementfactory;

import java.awt.Color;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;

import org.jfree.report.Element;
import org.jfree.report.ElementAlignment;
import org.jfree.report.TextElement;
import org.jfree.report.filter.templates.ResourceFieldTemplate;
import org.jfree.report.style.FontDefinition;
import org.jfree.ui.FloatDimension;

/**
 * A factory to define ResourceFieldElements. ResourceField translate their content
 * using a ResourceBundle instance.
 *
 * @author Thomas Morgner
 */
public class ResourceFieldElementFactory extends TextFieldElementFactory
{
  /** The resource base from which to read the translations. */
  private String resourceBase;

  /**
   * Default Constructor.
   */
  public ResourceFieldElementFactory()
  {
  }

  /**
   * Returns the base name of the resource bundle used to translate the content later.
   *
   * @return the resource bundle name of the element.
   */
  public String getResourceBase()
  {
    return resourceBase;
  }

  /**
   * Defines the base name of the resource bundle used to translate the content later.
   *
   * @param resourceBase the resource bundle name of the element.
   */
  public void setResourceBase(final String resourceBase)
  {
    this.resourceBase = resourceBase;
  }

  /**
   * Creates the resource field element based on the set properties.
   *
   * @see org.jfree.report.elementfactory.ElementFactory#createElement()
   *
   * @return the generated element.
   * @throws IllegalStateException if the fieldname is not defined.
   */
  public Element createElement()
  {
    if (getFieldname() == null)
    {
      throw new IllegalStateException("Fieldname is not set.");
    }

    final ResourceFieldTemplate template = new ResourceFieldTemplate();
    template.setResourceClassName(getResourceBase());
    template.setField(getFieldname());
    if (getNullString() != null)
    {
      template.setNullValue(getNullString());
    }

    final TextElement element = new TextElement();
    applyElementName(element);
    element.setDataSource(template);

    applyStyle(element.getStyle());
    return element;
  }

  /**
   * creates a ResourceElement. ResourceElements resolve their value using a
   * <code>java.util.ResourceBundle</code>.
   *
   * @param name the name of the element (null allowed)
   * @param bounds the element's bounds
   * @param color the text color of the element
   * @param alignment the element's horizontal text alignment
   * @param valignment the element's vertical text alignment
   * @param font the elements font
   * @param nullValue the text used when the value of this element is null
   * @param field the field in the datamodel to retrieve values from
   * @param resourceBase the classname/basename of the assigned resource bundle
   * @return the created ResourceElement
   */
  public static TextElement createResourceElement(final String name,
                                                  final Rectangle2D bounds,
                                                  final Color color,
                                                  final ElementAlignment alignment,
                                                  final ElementAlignment valignment,
                                                  final FontDefinition font,
                                                  final String nullValue,
                                                  final String resourceBase,
                                                  final String field)
  {
    final ResourceFieldElementFactory factory = new ResourceFieldElementFactory();
    factory.setAbsolutePosition(new Point2D.Double(bounds.getX(), bounds.getY()));
    factory.setMinimumSize(new FloatDimension
        ((float) bounds.getWidth(), (float) bounds.getHeight()));
    factory.setName(name);
    factory.setColor(color);
    factory.setHorizontalAlignment(alignment);
    factory.setVerticalAlignment(valignment);

    if (font != null)
    {
      factory.setFontName(font.getFontName());
      factory.setFontSize(new Integer(font.getFontSize()));
      factory.setBold(new Boolean(font.isBold()));
      factory.setItalic(new Boolean(font.isItalic()));
      factory.setEncoding(font.getFontEncoding(null));
      factory.setUnderline(new Boolean(font.isUnderline()));
      factory.setStrikethrough(new Boolean(font.isStrikeThrough()));
      factory.setEmbedFont(new Boolean(font.isEmbeddedFont()));
    }
    factory.setNullString(nullValue);
    factory.setResourceBase(resourceBase);
    factory.setFieldname(field);
    return (TextElement) factory.createElement();
  }


}