67 lines
2.4 KiB
Java
67 lines
2.4 KiB
Java
/*
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* Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4832765
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* @summary JList vertical scrolling doesn't work properly.
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* @run main bug4832765
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*/
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import java.awt.Dimension;
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import java.awt.Rectangle;
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import javax.swing.JFrame;
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import javax.swing.JList;
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import javax.swing.JScrollPane;
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import javax.swing.SwingConstants;
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import javax.swing.SwingUtilities;
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public class bug4832765 {
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public static void main(String[] argv) throws Exception {
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SwingUtilities.invokeAndWait(() -> {
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String[] data = {"One", "Two", "Three", "Four",
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"Five", "Six ", "Seven", "Eight",
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"Nine", "Ten", "Eleven", "Twelv"};
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JList<String> list = new JList<>(data);
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list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
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JScrollPane jsp = new JScrollPane(list);
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Rectangle rect = list.getCellBounds(5, 5);
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Dimension d = new Dimension(200, rect.height);
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jsp.setPreferredSize(d);
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jsp.setMinimumSize(d);
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list.scrollRectToVisible(rect);
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int unit = list.getScrollableUnitIncrement(rect,
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SwingConstants.VERTICAL,
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-1);
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if (unit <= 0) {
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throw new RuntimeException("JList scrollable unit increment" +
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" should be greate than 0.");
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}
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});
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}
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}
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