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/*
* Copyright (c) 2018, 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.
*/
import java.awt.Font;
import javax.swing.JSpinner;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.UIResource;
import static javax.swing.JSpinner.DefaultEditor;
import static javax.swing.UIManager.getInstalledLookAndFeels;
/**
* @test
* @key headful
* @bug 8210739
*/
public final class FontSetToNull {
private static final Font USERS_FONT = new Font("dialog", Font.BOLD, 41);
public static void main(final String[] args) throws Exception {
for (final UIManager.LookAndFeelInfo laf : getInstalledLookAndFeels()) {
SwingUtilities.invokeAndWait(() -> setLookAndFeel(laf));
SwingUtilities.invokeAndWait(() -> {
// default spinner
test(new JSpinner());
// spinner which always uses the null font
test(new JSpinner(){
@Override
public Font getFont() {
return null;
}
});
});
}
}
/**
* A sequence of methods that test a possible NPE.
*/
private static void test(JSpinner spinner) {
final DefaultEditor de = (DefaultEditor) spinner.getEditor();
spinner.setFont(null); // Check possible NPE
SwingUtilities.updateComponentTreeUI(de); // Check possible NPE
spinner.setFont(null); // Check possible NPE
// should not replace the font of the TextField
de.getTextField().setFont(USERS_FONT);
spinner.setFont(null);
final Font tff = de.getTextField().getFont();
if (tff instanceof UIResource || !tff.equals(USERS_FONT)) {
throw new RuntimeException("Wrong font: " + tff);
}
spinner.setEditor(new JSpinner().getEditor()); // Check possible NPE
}
private static void setLookAndFeel(final UIManager.LookAndFeelInfo laf) {
try {
UIManager.setLookAndFeel(laf.getClassName());
System.out.println("LookAndFeel: " + laf.getClassName());
} catch (ClassNotFoundException | InstantiationException |
UnsupportedLookAndFeelException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
}
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