1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.awt.Font; 25 26 import javax.swing.JSpinner; 27 import javax.swing.SwingUtilities; 28 import javax.swing.UIManager; 29 import javax.swing.UnsupportedLookAndFeelException; 30 import javax.swing.plaf.UIResource; 31 32 import static javax.swing.JSpinner.DefaultEditor; 33 import static javax.swing.UIManager.getInstalledLookAndFeels; 34 35 /** 36 * @test 37 * @key headful 38 * @bug 8210739 39 */ 40 public final class FontSetToNull { 41 42 private static final Font USERS_FONT = new Font("dialog", Font.BOLD, 41); 43 44 public static void main(final String[] args) throws Exception { 45 for (final UIManager.LookAndFeelInfo laf : getInstalledLookAndFeels()) { 46 SwingUtilities.invokeAndWait(() -> setLookAndFeel(laf)); 47 SwingUtilities.invokeAndWait(() -> { 48 // default spinner 49 test(new JSpinner()); 50 // spinner which always uses the null font 51 test(new JSpinner(){ 52 @Override 53 public Font getFont() { 54 return null; 55 } 56 }); 57 }); 58 } 59 } 60 61 /** 62 * A sequence of methods that test a possible NPE. 63 */ 64 private static void test(JSpinner spinner) { 65 final DefaultEditor de = (DefaultEditor) spinner.getEditor(); 66 67 spinner.setFont(null); // Check possible NPE 68 SwingUtilities.updateComponentTreeUI(de); // Check possible NPE 69 spinner.setFont(null); // Check possible NPE 70 71 // should not replace the font of the TextField 72 de.getTextField().setFont(USERS_FONT); 73 spinner.setFont(null); 74 75 final Font tff = de.getTextField().getFont(); 76 if (tff instanceof UIResource || !tff.equals(USERS_FONT)) { 77 throw new RuntimeException("Wrong font: " + tff); 78 } 79 80 spinner.setEditor(new JSpinner().getEditor()); // Check possible NPE 81 } 82 83 private static void setLookAndFeel(final UIManager.LookAndFeelInfo laf) { 84 try { 85 UIManager.setLookAndFeel(laf.getClassName()); 86 System.out.println("LookAndFeel: " + laf.getClassName()); 87 } catch (ClassNotFoundException | InstantiationException | 88 UnsupportedLookAndFeelException | IllegalAccessException e) { 89 throw new RuntimeException(e); 90 } 91 } 92 }