126 lines
4.3 KiB
Java
126 lines
4.3 KiB
Java
/*
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* Copyright (c) 2022, 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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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.Graphics2D;
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import java.awt.image.BufferedImage;
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import javax.swing.JTable;
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import javax.swing.SwingUtilities;
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import javax.swing.UIManager;
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import javax.swing.UnsupportedLookAndFeelException;
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import javax.swing.table.AbstractTableModel;
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import javax.swing.table.JTableHeader;
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import javax.swing.table.TableCellRenderer;
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/*
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* @test
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* @bug 6429812
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* @summary Test to check if table header is painted without NPE
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* @run main TableHeaderRendererTest
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*/
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public class TableHeaderRendererTest {
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public static void main(String[] args) throws Exception {
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SwingUtilities.invokeAndWait(TableHeaderRendererTest::runTest);
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System.out.println("Test Passed");
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}
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private static void runTest() {
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UIManager.LookAndFeelInfo[] lookAndFeel = UIManager.getInstalledLookAndFeels();
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for (UIManager.LookAndFeelInfo look : lookAndFeel) {
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System.out.println(look.getName() + " LookAndFeel Set");
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setLookAndFeel(look.getClassName());
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// initialize should not throw NullPointerException
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initialize();
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}
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}
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//Initialize the table and paint it to Buffered Image
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static void initialize() {
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JTable table = new JTable(new SampleTableModel());
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final JTableHeader header = table.getTableHeader();
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TableCellRenderer renderer = new DecoratedHeaderRenderer(header.getDefaultRenderer());
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header.setDefaultRenderer(renderer);
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table.updateUI();
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Dimension size = header.getPreferredSize();
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header.setSize(size);
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BufferedImage img = new BufferedImage(size.width, size.height,
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BufferedImage.TYPE_INT_ARGB);
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Graphics2D g2d = img.createGraphics();
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try {
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header.paint(g2d);
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} finally {
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g2d.dispose();
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}
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}
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//Table Model data
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static class SampleTableModel extends AbstractTableModel {
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@Override
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public int getRowCount() {
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return 10;
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}
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@Override
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public int getColumnCount() {
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return 10;
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}
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@Override
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public Object getValueAt(int rowIndex, int columnIndex) {
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return ""+rowIndex + " X " + columnIndex;
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}
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}
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//Table header renderer
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static class DecoratedHeaderRenderer implements TableCellRenderer {
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public DecoratedHeaderRenderer(TableCellRenderer render) {
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this.render = render;
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}
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private final TableCellRenderer render;
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@Override
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public Component getTableCellRendererComponent(JTable table,
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Object value, boolean isSelected,
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boolean hasFocus, int row, int column) {
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return render.getTableCellRendererComponent(
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table, value, isSelected, hasFocus, row, column);
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}
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}
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private static void setLookAndFeel(String laf) {
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try {
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UIManager.setLookAndFeel(laf);
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} catch (UnsupportedLookAndFeelException ignored) {
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System.out.println("Unsupported L&F: " + laf);
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} catch (ClassNotFoundException | InstantiationException
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| IllegalAccessException e) {
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throw new RuntimeException(e);
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}
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}
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}
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