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/*
* Copyright (c) 2001, 2024, 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 4137282
* @summary Tests that scrollbars appear automatically when the enclosed
* component is enlarged
* @library /java/awt/regtesthelpers
* @build PassFailJFrame
* @run main/manual bug4137282
*/
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class bug4137282 {
private static final String INSTRUCTIONS = """
Press the "resize" button. Two scrollbars should appear.
Press Pass if they appear and Fail otherwise.""";
static volatile JPanel pane;
public static void main(String[] args) throws Exception {
PassFailJFrame.builder()
.title("JViewport Instructions")
.instructions(INSTRUCTIONS)
.rows(5)
.columns(30)
.testUI(bug4137282::createTestUI)
.build()
.awaitAndCheck();
}
private static JFrame createTestUI() {
pane = new JPanel();
pane.setBackground(Color.blue);
setPaneSize(100, 100);
JFrame frame = new JFrame("bug4137282");
JScrollPane sp = new JScrollPane(pane);
JButton b = new JButton("resize");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
setPaneSize(300, 300);
}
});
frame.add(b, BorderLayout.NORTH);
frame.add(sp, BorderLayout.CENTER);
frame.pack();
return frame;
}
static void setPaneSize(int w, int h) {
pane.setPreferredSize(new Dimension(w, h));
pane.setSize(w, h);
}
}
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