135 lines
4.7 KiB
Java
135 lines
4.7 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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/* @test
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* @bug 6257207
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* @key headful
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* @summary Verifies if JTable.getDefaultEditor throws NullPointerException
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* @run main JTableEditorNPE
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*/
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import java.awt.Component;
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import javax.swing.JFrame;
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import javax.swing.JTable;
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import javax.swing.table.DefaultTableModel;
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import javax.swing.table.TableModel;
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import javax.swing.table.TableCellEditor;
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import javax.swing.table.TableCellRenderer;
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import javax.swing.event.TableModelEvent;
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import javax.swing.event.TableModelListener;
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import javax.swing.SwingUtilities;
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public class JTableEditorNPE {
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private static JFrame frame;
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public static void main(String[] args) throws Exception {
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try {
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SwingUtilities.invokeAndWait(() -> {
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frame = new JFrame();
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frame.setSize(100, 100);
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DefaultTableModel myModel = new DefaultTableModel();
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myModel.addColumn("Col1");
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myModel.addColumn("Col2");
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myModel.addColumn("Col3");
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myModel.addRow(new Object[]{"item1.1", "item1.2", "item1.3"});
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myModel.addRow(new Object[]{"item2.1", "item2.2", "item2.3"});
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MyTable tbl = new MyTable(myModel);
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frame.getContentPane().add(tbl);
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frame.validate();
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});
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} finally {
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SwingUtilities.invokeAndWait(() -> {
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if (frame != null) {
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frame.dispose();
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}
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});
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}
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}
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static class MyTable extends JTable implements TableModelListener {
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public MyTable(TableModel model) {
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super(model);
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}
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public void tableChanged(TableModelEvent event) {
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super.tableChanged(event);
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int column = event.getColumn();
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if (column == TableModelEvent.ALL_COLUMNS) {
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resizeAll();
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} else {
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resize(column);
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}
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}
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protected void resizeAll() {
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for (int i = 0; i < getModel().getColumnCount(); i++) {
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resize(i);
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}
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}
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protected void resize(int column) {
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TableCellEditor editor = null;
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TableCellRenderer renderer = null;
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Component comp;
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int width=0;
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for (int row = 0; row < getModel().getRowCount(); row++) {
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editor = this.getCellEditor(row, column);
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if (editor != null) {
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comp = editor.getTableCellEditorComponent(
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this, // table
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getModel().getValueAt(row,column), // value
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false, // isSelected
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row, // row
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column // column
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);
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if (comp != null) {
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width = Math.max(width, comp.getPreferredSize().width);
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}
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}
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renderer = this.getCellRenderer(row, column);
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if (renderer != null) {
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comp = renderer.getTableCellRendererComponent(
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this, // table
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getModel().getValueAt(row, column), // value
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false, // isSelected
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false, // hasFocus
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row, // row
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column // column
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);
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if (comp != null) {
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width = Math.max(width, comp.getPreferredSize().width);
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}
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}
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}
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getColumnModel().getColumn(column).setPreferredWidth(width);
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this.revalidate();
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this.repaint();
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}
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}
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}
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