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/*
* Copyright (c) 1999, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
@test
@bug 4284124
@summary FlowLayout gives a wrong size if the first component is hidden.
@key headful
@run main PreferredLayoutSize
*/
import java.awt.Button;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.lang.reflect.InvocationTargetException;
public class PreferredLayoutSize {
public void start() {
Frame f = new Frame("PreferredLayoutSize");
int[] widths = new int[2];
try {
f.setLocationRelativeTo(null);
Button b1 = new Button("button 1");
Button b2 = new Button("button 2");
f.setLayout(new FlowLayout(FlowLayout.LEFT, 50, 5));
f.add(b1);
f.add(b2);
f.pack();
f.setVisible(true);
b1.setVisible(false);
b2.setVisible(true);
Dimension d1 = f.getPreferredSize();
Dimension d2 = b2.getPreferredSize();
widths[0] = d1.width - d2.width;
b1.setVisible(true);
b2.setVisible(false);
d1 = f.getPreferredSize();
d2 = b1.getPreferredSize();
widths[1] = d1.width - d2.width;
f.setVisible(false);
} finally {
f.dispose();
}
if (widths[0] != widths[1]) {
throw new RuntimeException("Test FAILED");
}
}
public static void main(String[] args) throws InterruptedException,
InvocationTargetException {
PreferredLayoutSize test = new PreferredLayoutSize();
EventQueue.invokeAndWait(test::start);
}
}
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