/* * Copyright (c) 2000, 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 4273320 * @summary JTabbedPane.setTitleAt() should refresh when using HTML text * @key headful */ import java.awt.BorderLayout; import java.awt.Rectangle; import java.awt.Robot; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTabbedPane; import javax.swing.SwingUtilities; import javax.swing.plaf.TabbedPaneUI; public class bug4273320 { static JFrame frame; static volatile JTabbedPane tabs; static final String PLAIN = "Plain"; static final String HTML = "A fairly long HTML text label"; public static void main(String[] args) throws Exception { try { SwingUtilities.invokeAndWait(bug4273320::createUI); Robot robot = new Robot(); robot.waitForIdle(); robot.delay(1000); TabbedPaneUI ui = tabs.getUI(); Rectangle origSize = ui.getTabBounds(tabs, 0); SwingUtilities.invokeAndWait(() -> { tabs.setTitleAt(0, HTML); }); robot.waitForIdle(); robot.delay(1000); Rectangle newSize = ui.getTabBounds(tabs, 0); // The tab should be resized larger if the longer HTML text is added System.out.println("orig = " + origSize.width + " x " + origSize.height); System.out.println("new = " + newSize.width + " x " + newSize.height); if (origSize.width >= newSize.width) { throw new RuntimeException("Tab text is not updated."); } } finally { SwingUtilities.invokeAndWait(() -> { if (frame != null) { frame.dispose(); } }); } } static void createUI() { frame = new JFrame("bug4273320"); tabs = new JTabbedPane(); JPanel panel = new JPanel(); tabs.addTab(PLAIN, panel); frame.getContentPane().add(tabs, BorderLayout.CENTER); frame.setSize(500, 300); frame.setVisible(true); } }