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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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* The contents of this file are subject to the terms of either the GNU
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* General Public License Version 2 only ("GPL") or the Common
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* Development and Distribution License("CDDL") (collectively, the
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* "License"). You may not use this file except in compliance with the
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* License. You can obtain a copy of the License at
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* http://www.netbeans.org/cddl-gplv2.html
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* or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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* specific language governing permissions and limitations under the
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* License. When distributing the software, include this License Header
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* Notice in each file and include the License file at
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* nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the GPL Version 2 section of the License file that
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* accompanied this code. If applicable, add the following below the
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* License Header, with the fields enclosed by brackets [] replaced by
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* your own identifying information:
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* "Portions Copyrighted [year] [name of copyright owner]"
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* The Original Software is NetBeans. The Initial Developer of the Original
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* Software is Sun Microsystems, Inc. Portions Copyright 2004 Sun
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* Microsystems, Inc. All Rights Reserved.
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* If you wish your version of this file to be governed by only the CDDL
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* your version of this file under either the CDDL, the GPL Version 2 or
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* However, if you add GPL Version 2 code and therefore, elected the GPL
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* Version 2 license, then the option applies only if the new code is
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* made subject to such option by the copyright holder.
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package org.netbeans.modules.junit;
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import java.awt.Dimension;
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import java.awt.LayoutManager;
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import javax.swing.JPanel;
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* Panel whose dimension can be restricted by its preferred size.
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* It is supposed to be used in containers using <code>BoxLayout</code>.
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* @see javax.swing.BoxLayout BoxLayout
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* @author Marian Petras
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public class SizeRestrictedPanel extends JPanel {
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/** whether the panel's width is restricted */
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private final boolean widthRestriction;
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/** whether the panel's height is restricted */
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private final boolean heightRestriction;
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* Creates a panel with flow layout, restricted in both directions.
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public SizeRestrictedPanel() {
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* Creates a panel with flow layout, with width and/or height restricted.
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* @param widthRestriction whether the panel's width should be restricted
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* @param heightRestriction whether the panel's height should be restricted
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public SizeRestrictedPanel(boolean widthRestriction,
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boolean heightRestriction) {
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this.widthRestriction = widthRestriction;
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this.heightRestriction = heightRestriction;
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* Creates a panel with the specified layout manager and with size
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* restricted in both directions.
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* @param layoutMgr layout manager for this panel
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public SizeRestrictedPanel(LayoutManager layoutMgr) {
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this(layoutMgr, true, true);
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* Creates a panel with the specified layout manager and with width and/or
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* @param layoutMgr layout manager for this panel
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* @param widthRestriction whether the panel's width should be restricted
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* @param heightRestriction whether the panel's height should be restricted
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public SizeRestrictedPanel(LayoutManager layoutMgr,
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boolean widthRestriction,
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boolean heightRestriction) {
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this.widthRestriction = widthRestriction;
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this.heightRestriction = heightRestriction;
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* Returns maximum size of this panel.
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* The maximum size can be restricted in width, height or in both
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* directions, depending on parameters passed to the constructor.
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* @return dimension returned from original <code>getMaximumSize()</code>
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* and then modified according to restrictions specified
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* by the constructor's parameters
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public Dimension getMaximumSize() {
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if (widthRestriction && heightRestriction) { //both true
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return getPreferredSize();
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if (widthRestriction == heightRestriction) { //both false
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return super.getMaximumSize();
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Dimension maximumSize = super.getMaximumSize();
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if (widthRestriction) {
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maximumSize.width = getPreferredSize().width;
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maximumSize.height = getPreferredSize().height;