/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 * 
 */

/*
 * Created on Apr 25, 2003
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package org.apache.jmeter.gui.util;

import java.awt.Color;
import java.awt.BorderLayout;
import java.awt.Component;

import javax.swing.Box;
import javax.swing.JComponent;
import javax.swing.JPanel;

public class VerticalPanel extends JPanel {
	private Box subPanel = Box.createVerticalBox();

	private float horizontalAlign;

	private int vgap;

	public VerticalPanel() {
		this(5, LEFT_ALIGNMENT);
	}

    public VerticalPanel(Color bkg) {
        this();
        subPanel.setBackground(bkg);
        this.setBackground(bkg);
    }
    
	public VerticalPanel(int vgap, float horizontalAlign) {
		super(new BorderLayout());
		add(subPanel, BorderLayout.NORTH);
		this.vgap = vgap;
		this.horizontalAlign = horizontalAlign;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.awt.Container#add(java.awt.Component)
	 */
	public Component add(Component c) {
		// This won't work right if we remove components. But we don't, so I'm
		// not going to worry about it right now.
		if (vgap > 0 && subPanel.getComponentCount() > 0) {
			subPanel.add(Box.createVerticalStrut(vgap));
		}

		if (c instanceof JComponent) {
			((JComponent) c).setAlignmentX(horizontalAlign);
		}

		return subPanel.add(c);
	}
}
