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/*
* Copyright (c) 2001, 2025, 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 4183379
* @summary JList has wrong scrolling behavior when you click in the "troth"
* of a scrollbar, in a scrollpane.
* @library /java/awt/regtesthelpers
* @build PassFailJFrame
* @run main/manual bug4183379
*/
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
public class bug4183379 {
public static void main(String[] args) throws Exception {
String INSTRUCTIONS = """
Click mouse several times in the "troth" of a scrollbars
in a scrollpane containing a list.
The list should scrolls by one block, i.e.:
For vertical scrolling:
- if scrolling down the last visible element should become the
first completely visible element
- if scrolling up, the first visible element should become the
last completely visible element
For horizontal scrolling:
- for scrolling left if the beginning of the first column is not
visible it should become visible, otherwise the beginning of the
previous column should become visible;
- for scrolling right the next colunm after first visible column
should become visible.
""";
PassFailJFrame.builder()
.title("bug4183379 Instructions")
.instructions(INSTRUCTIONS)
.columns(35)
.testUI(bug4183379::initialize)
.build()
.awaitAndCheck();
}
private static JFrame initialize() {
JFrame fr = new JFrame("bug4183379");
String[] data = new String[90];
for (int i=0; i<90; i++) {
data[i] = "item number "+i;
}
JList lst = new JList(data);
lst.setLayoutOrientation(JList.VERTICAL_WRAP);
lst.setVisibleRowCount(20);
JScrollPane jsp = new JScrollPane(lst);
fr.add(jsp);
fr.setSize(210,200);
fr.setAlwaysOnTop(true);
return fr;
}
}
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