/*
 * $Header: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/swing/DialogTag.java,v 1.7 2002/05/17 15:18:12 jstrachan Exp $
 * $Revision: 1.7 $
 * $Date: 2002/05/17 15:18:12 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 * 
 * $Id: DialogTag.java,v 1.7 2002/05/17 15:18:12 jstrachan Exp $
 */
package org.apache.commons.jelly.tags.swing;

import java.awt.Component;
import java.awt.Container;
import java.awt.Dialog;
import java.awt.Frame;
import java.util.Map;
import javax.swing.JDialog;

import org.apache.commons.jelly.XMLOutput;
import org.apache.commons.jelly.tags.core.UseBeanTag;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/** 
 * Creates a Swing Dialog.  A JDialog needs to have it's owner set in the constructor,
 * which is why this class is needed instead of just using a BeanFactory.
 *
 * @author Dave Pekarek Krohn
 * @version $Revision: 1.7 $
 */
public class DialogTag extends UseBeanTag implements ContainerTag {

    /** The Log to which logging calls will be made. */
    private static final Log log = LogFactory.getLog(DialogTag.class);

    public DialogTag() {
        super(JDialog.class);
    }

    // Implementation methods
    //-------------------------------------------------------------------------                    

    /**
     * Creates a JDialog.  The constructor used depends on the value of the owner attribute.
     */
    protected Object newInstance(Class theClass, Map attributes, XMLOutput output) throws Exception {
        Object owner = attributes.remove( "owner" );
        if (owner instanceof Frame) {
            return new JDialog((Frame) owner);
        } else if (owner instanceof Dialog) {
            return new JDialog((Dialog) owner);
        } else {
            return new JDialog();
        }
    }

    // ContainerTag interface
    //-------------------------------------------------------------------------                    

    /**
     * Adds a component to the dialog.
     */
    public void addChild(Component component, Object constraints) {
        Container contentPane = ((JDialog) getBean()).getContentPane();
        if (constraints != null) {
            contentPane.add( component, constraints );
        } else {
            contentPane.add( component );
        }
    }
}