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/*
* Copyright (c) 2003, 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 4895367
* @summary List scrolling w/ down arrow keys obscures horizontal scrollbar
* @library /java/awt/regtesthelpers
* @build PassFailJFrame
* @requires (os.family == "linux")
* @run main/manual HorizScrollbarEraseTest
*/
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.List;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class HorizScrollbarEraseTest {
private static final String INSTRUCTIONS = """
This is a Unix-only test.
Do the four mini-tests below.
If the horizontal scrollbar is ever erased by a rectangle
of the background color, the test FAILS.
If the horizontal scrollbars remain painted, test passes.""";
public static void main(String[] args) throws Exception {
PassFailJFrame.builder()
.title("HorizScrollbarEraseTest Instructions")
.instructions(INSTRUCTIONS)
.rows((int) INSTRUCTIONS.lines().count() + 2)
.columns(35)
.testUI(HorizScrollbarEraseTest::createTestUI)
.build()
.awaitAndCheck();
}
private static Frame createTestUI() {
Frame frame = new Frame("HorizScrollbarEraseTest");
Panel borderPanel = new Panel();
borderPanel.setLayout(new BorderLayout());
Button focusedButton = new Button("Focus starts here");
borderPanel.add(focusedButton, BorderLayout.NORTH);
Panel gridPanel = new Panel();
gridPanel.setLayout(new GridLayout(0, 4));
borderPanel.add(gridPanel, BorderLayout.CENTER);
InstructionList il1 = new InstructionList("Tab to Item 2, then \n" +
"press the down" +
"arrow key to scroll down");
il1.list.select(2);
il1.list.makeVisible(0);
gridPanel.add(il1);
InstructionList il2 = new InstructionList("Tab to the next List,\n" +
"then press the down\n" +
"arrow key to select\n" +
"the last item.");
il2.list.select(3);
il2.list.makeVisible(0);
gridPanel.add(il2);
InstructionList il3 = new InstructionList("Click the button to\n" +
"programmatically\n" +
"select item 3 (not showing)");
Button selectBtn = new Button("Click Me");
final List selectList = il3.list;
selectBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
selectList.select(3);
}
});
il3.add(selectBtn, BorderLayout.CENTER);
gridPanel.add(il3);
InstructionList il4 = new InstructionList("Click the button to\nprogrammatically\ndeselect item 3\n(not showing)");
Button deselectBtn = new Button("Click Me");
final List deselectList = il4.list;
deselectBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
deselectList.deselect(3);
}
});
il4.add(deselectBtn, BorderLayout.CENTER);
il4.list.select(3);
il4.list.makeVisible(0);
gridPanel.add(il4);
frame.add(borderPanel);
frame.pack();
return frame;
}
}
class InstructionList extends Panel {
TextArea ta;
public List list;
public InstructionList(String instructions) {
super();
setLayout(new BorderLayout());
ta = new TextArea(instructions, 6, 25, TextArea.SCROLLBARS_NONE);
ta.setFocusable(false);
list = new List();
for (int i = 0; i < 5; i++) {
list.add("Item " + i + ", a long, long, long, long item");
}
add(ta, BorderLayout.NORTH);
add(list, BorderLayout.SOUTH);
}
}
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