russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
125 lines
4.2 KiB
Java
125 lines
4.2 KiB
Java
/*
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* Copyright (c) 2003, 2025, 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 4100671
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* @summary removing and adding back ScrollPane component does not work
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual ScrollPaneComponentTest
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*/
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import java.awt.Adjustable;
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import java.awt.BorderLayout;
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import java.awt.Button;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.Panel;
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import java.awt.ScrollPane;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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public class ScrollPaneComponentTest {
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public static void main(String[] args) throws Exception {
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String INSTRUCTIONS = """
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1. Notice the scrollbars (horizontal and vertical)
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in the Frame titled 'ScrollPane Component Test'
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2. Click the button labeled 'Remove and add back
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ScrollPane Contents'
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3. If the Scrollbars (horizontal or vertical or both)
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disappears in the Frame, then press FAIL, else press PASS.
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""";
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PassFailJFrame.builder()
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.title("Test Instructions")
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.instructions(INSTRUCTIONS)
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.columns(35)
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.testUI(ScrollPaneComponentTest::initialize)
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.build()
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.awaitAndCheck();
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}
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static Frame initialize() {
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Frame fr = new Frame("ScrollPane Component Test");
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fr.setLayout(new BorderLayout());
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ScrollTester test = new ScrollTester();
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fr.add(test);
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fr.pack();
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fr.setSize(200, 200);
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Adjustable vadj = test.pane.getVAdjustable();
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Adjustable hadj = test.pane.getHAdjustable();
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vadj.setUnitIncrement(5);
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hadj.setUnitIncrement(5);
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return fr;
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}
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}
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class Box extends Component {
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public Dimension getPreferredSize() {
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System.out.println("asked for size");
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return new Dimension(300, 300);
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}
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public void paint(Graphics gr) {
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super.paint(gr);
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gr.setColor(Color.red);
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gr.drawLine(5, 5, 295, 5);
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gr.drawLine(295, 5, 295, 295);
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gr.drawLine(295, 295, 5, 295);
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gr.drawLine(5, 295, 5, 5);
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System.out.println("Painted!!");
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}
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}
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class ScrollTester extends Panel {
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public ScrollPane pane;
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private final Box child;
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class Handler implements ActionListener {
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public void actionPerformed(ActionEvent e) {
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System.out.println("Removing scrollable component");
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pane.remove(child);
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System.out.println("Adding back scrollable component");
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pane.add(child);
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System.out.println("Done Adding back scrollable component");
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}
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}
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public ScrollTester() {
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pane = new ScrollPane();
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pane.setSize(200, 200);
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child = new Box();
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pane.add(child);
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setLayout(new BorderLayout());
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Button changeScrollContents = new Button("Remove and add back ScrollPane Contents");
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changeScrollContents.setBackground(Color.red);
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changeScrollContents.addActionListener(new Handler());
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add("North", changeScrollContents);
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add("Center", pane);
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}
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}
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