captiontagbeaninfo.java

一个比较不错的java分页标签,有源代码,开发者 可以学习学习

/**
 * Licensed under the Artistic License; you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://displaytag.sourceforge.net/license.html
 *
 * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
package org.displaytag.tags;

import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.beans.SimpleBeanInfo;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.UnhandledException;


/**
 * Needed to make the "class" tag attribute working.
 * @author Fabrizio Giustina
 * @version $Revision: 956 $ ($Author: fgiust $)
 */
public class CaptionTagBeanInfo extends SimpleBeanInfo
{

    /**
     * @see java.beans.BeanInfo#getPropertyDescriptors()
     */
    public PropertyDescriptor[] getPropertyDescriptors()
    {
        List proplist = new ArrayList();

        try
        {
            proplist.add(new PropertyDescriptor("class", //$NON-NLS-1$
                CaptionTag.class, null, "setClass")); //$NON-NLS-1$
            proplist.add(new PropertyDescriptor("dir", //$NON-NLS-1$
                CaptionTag.class, null, "setDir")); //$NON-NLS-1$
            proplist.add(new PropertyDescriptor("id", //$NON-NLS-1$
                CaptionTag.class, null, "setId")); //$NON-NLS-1$
            proplist.add(new PropertyDescriptor("lang", //$NON-NLS-1$
                CaptionTag.class, null, "setLang")); //$NON-NLS-1$
            proplist.add(new PropertyDescriptor("media", //$NON-NLS-1$
                CaptionTag.class, null, "setMedia")); //$NON-NLS-1$
            proplist.add(new PropertyDescriptor("style", //$NON-NLS-1$
                CaptionTag.class, null, "setStyle")); //$NON-NLS-1$
            proplist.add(new PropertyDescriptor("title", //$NON-NLS-1$
                CaptionTag.class, null, "setTitle")); //$NON-NLS-1$

            // make ATG Dynamo happy:
            // Attribute "className" of tag "caption" in taglib descriptor file displaytag-11.tld" must have a
            // corresponding property in class "org.displaytag.tags.CaptionTag" with a public setter method
            proplist.add(new PropertyDescriptor("className", //$NON-NLS-1$
                CaptionTag.class, null, "setClass")); //$NON-NLS-1$
        }
        catch (IntrospectionException ex)
        {
            throw new UnhandledException("You got an introspection exception - maybe defining a property that is not"
                + " defined in the CaptionTag?: "
                + ex.getMessage(), ex);
        }

        PropertyDescriptor[] result = new PropertyDescriptor[proplist.size()];
        return ((PropertyDescriptor[]) proplist.toArray(result));
    }

}