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diff --git a/srcjar/net/miginfocom/layout/ResizeConstraint.java b/srcjar/net/miginfocom/layout/ResizeConstraint.java
new file mode 100644
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+++ b/srcjar/net/miginfocom/layout/ResizeConstraint.java
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+package net.miginfocom.layout;
+
+import java.io.*;
+/*
+ * License (BSD):
+ * ==============
+ *
+ * Copyright (c) 2004, Mikael Grev, MiG InfoCom AB. (miglayout (at) miginfocom (dot) com)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright notice, this list
+ * of conditions and the following disclaimer.
+ * 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.
+ * Neither the name of the MiG InfoCom AB nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
+ *
+ * @version 1.0
+ * @author Mikael Grev, MiG InfoCom AB
+ *         Date: 2006-sep-08
+ */
+
+/** A parsed constraint that specifies how an entity (normally column/row or component) can shrink or
+ * grow compared to other entities.
+ */
+final class ResizeConstraint implements Externalizable
+{
+	static final Float WEIGHT_100 = 100f;
+
+	/** How flexible the entity should be, relative to other entities, when it comes to growing. <code>null</code> or
+	 * zero mean it will never grow. An entity that has twice the growWeight compared to another entity will get twice
+	 * as much of available space.
+	 * <p>
+	 * "grow" are only compared within the same "growPrio".
+	 */
+	Float grow = null;
+
+	/** The relative priority used for determining which entities gets the extra space first.
+	 */
+	int growPrio = 100;
+
+	Float shrink = WEIGHT_100;
+
+	int shrinkPrio = 100;
+
+	public ResizeConstraint()   // For Externalizable
+	{
+	}
+
+	ResizeConstraint(int shrinkPrio, Float shrinkWeight, int growPrio, Float growWeight)
+	{
+		this.shrinkPrio = shrinkPrio;
+		this.shrink = shrinkWeight;
+		this.growPrio = growPrio;
+		this.grow = growWeight;
+	}
+
+	// ************************************************
+	// Persistence Delegate and Serializable combined.
+	// ************************************************
+
+	private Object readResolve() throws ObjectStreamException
+	{
+		return LayoutUtil.getSerializedObject(this);
+	}
+
+	@Override
+	public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
+	{
+		LayoutUtil.setSerializedObject(this, LayoutUtil.readAsXML(in));
+	}
+
+	@Override
+	public void writeExternal(ObjectOutput out) throws IOException
+	{
+		if (getClass() == ResizeConstraint.class)
+			LayoutUtil.writeAsXML(out, this);
+	}
+}