1 package net.miginfocom.layout;
8 * Copyright (c) 2004, Mikael Grev, MiG InfoCom AB. (miglayout (at) miginfocom (dot) com)
11 * Redistribution and use in source and binary forms, with or without modification,
12 * are permitted provided that the following conditions are met:
13 * Redistributions of source code must retain the above copyright notice, this list
14 * of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice, this
16 * list of conditions and the following disclaimer in the documentation and/or other
17 * materials provided with the distribution.
18 * Neither the name of the MiG InfoCom AB nor the names of its contributors may be
19 * used to endorse or promote products derived from this software without specific
20 * prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
28 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
34 * @author Mikael Grev, MiG InfoCom AB
38 /** A parsed constraint that specifies how an entity (normally column/row or component) can shrink or
39 * grow compared to other entities.
41 final class ResizeConstraint implements Externalizable
43 static final Float WEIGHT_100 = 100f;
45 /** How flexible the entity should be, relative to other entities, when it comes to growing. <code>null</code> or
46 * zero mean it will never grow. An entity that has twice the growWeight compared to another entity will get twice
47 * as much of available space.
49 * "grow" are only compared within the same "growPrio".
53 /** The relative priority used for determining which entities gets the extra space first.
57 Float shrink = WEIGHT_100;
61 public ResizeConstraint() // For Externalizable
65 ResizeConstraint(int shrinkPrio, Float shrinkWeight, int growPrio, Float growWeight)
67 this.shrinkPrio = shrinkPrio;
68 this.shrink = shrinkWeight;
69 this.growPrio = growPrio;
70 this.grow = growWeight;
73 // ************************************************
74 // Persistence Delegate and Serializable combined.
75 // ************************************************
77 private Object readResolve() throws ObjectStreamException
79 return LayoutUtil.getSerializedObject(this);
83 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
85 LayoutUtil.setSerializedObject(this, LayoutUtil.readAsXML(in));
89 public void writeExternal(ObjectOutput out) throws IOException
91 if (getClass() == ResizeConstraint.class)
92 LayoutUtil.writeAsXML(out, this);