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/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2000 Michael Powers
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see http://www.gnu.org
*/
package net.wotonomy.ui.swing.util;
import java.awt.Component;
import java.awt.Container;
import java.awt.Point;
import java.io.Serializable;
import java.util.Comparator;
import javax.swing.SwingUtilities;
/**
* A Comparator that will sort components in a common container based first on
* their y-coordinate and then on their x-coordinate, producing a list sorted
* from top to bottom and left to right. If all components are not in the same
* container, the resulting sort is undefined.
*
* @author michael@mpowers.net
* @author $Author: cgruber $
* @version $Revision: 904 $
*/
public class PositionComparator implements Comparator, Serializable {
private Container rootContainer;
private transient Component c1, c2;
private transient Point p1, p2;
/**
* Standard constructor to configure the comparator.
*
* @param aContainer The common container for all the objects to be compared.
*/
public PositionComparator(Container aContainer) {
rootContainer = aContainer;
}
// interface Comparable
public int compare(Object o1, Object o2) {
c1 = (Component) o1;
c2 = (Component) o2;
p1 = SwingUtilities.convertPoint(c1.getParent(), c1.getLocation(), rootContainer);
p2 = SwingUtilities.convertPoint(c2.getParent(), c2.getLocation(), rootContainer);
if (p1.y != p2.y) {
return p1.y - p2.y;
}
return p1.x - p2.x;
}
}
/*
* $Log$ Revision 1.2 2006/02/18 23:19:05 cgruber Update imports and maven
* dependencies.
*
* Revision 1.1 2006/02/16 13:22:22 cgruber Check in all sources in
* eclipse-friendly maven-enabled packages.
*
* Revision 1.1.1.1 2000/12/21 15:51:27 mpowers Contributing wotonomy.
*
* Revision 1.2 2000/12/20 16:25:45 michael Added log to all files.
*
*
*/
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