1 package net.miginfocom.layout;
7 * Copyright (c) 2004, Mikael Grev, MiG InfoCom AB. (miglayout (at) miginfocom (dot) com)
10 * Redistribution and use in source and binary forms, with or without modification,
11 * are permitted provided that the following conditions are met:
12 * Redistributions of source code must retain the above copyright notice, this list
13 * of conditions and the following disclaimer.
14 * Redistributions in binary form must reproduce the above copyright notice, this
15 * list of conditions and the following disclaimer in the documentation and/or other
16 * materials provided with the distribution.
17 * Neither the name of the MiG InfoCom AB nor the names of its contributors may be
18 * used to endorse or promote products derived from this software without specific
19 * prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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27 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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33 * @author Mikael Grev, MiG InfoCom AB
37 /** A class to extend if you want to provide more control over where a component is placed or the size of it.
39 * Note! Returned arrays from this class will never be altered. This means that caching of arrays in these methods
42 public abstract class LayoutCallback
44 /** Returns a position similar to the "pos" the component constraint.
45 * @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).
46 * <b>Should not be altered.</b>
47 * @return The [x, y, x2, y2] as explained in the documentation for "pos". If <code>null</code>
48 * is returned nothing is done and this is the default.
50 * @see net.miginfocom.layout.ConstraintParser#parseUnitValue(String, boolean)
52 public UnitValue[] getPosition(ComponentWrapper comp)
57 /** Returns a size similar to the "width" and "height" in the component constraint.
58 * @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).
59 * <b>Should not be altered.</b>
60 * @return The [width, height] as explained in the documentation for "width" and "height". If <code>null</code>
61 * is returned nothing is done and this is the default.
62 * @see net.miginfocom.layout.BoundSize
63 * @see net.miginfocom.layout.ConstraintParser#parseBoundSize(String, boolean, boolean)
65 public BoundSize[] getSize(ComponentWrapper comp)
70 /** A last minute change of the bounds. The bound for the layout cycle has been set and you can correct there
71 * after any set of rules you like.
72 * @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).
74 public void correctBounds(ComponentWrapper comp)