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/*
* Copyright (c) 2022, 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 6257207
* @key headful
* @summary Verifies if JTable.getDefaultEditor throws NullPointerException
* @run main JTableEditorNPE
*/
import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.SwingUtilities;
public class JTableEditorNPE {
private static JFrame frame;
public static void main(String[] args) throws Exception {
try {
SwingUtilities.invokeAndWait(() -> {
frame = new JFrame();
frame.setSize(100, 100);
DefaultTableModel myModel = new DefaultTableModel();
myModel.addColumn("Col1");
myModel.addColumn("Col2");
myModel.addColumn("Col3");
myModel.addRow(new Object[]{"item1.1", "item1.2", "item1.3"});
myModel.addRow(new Object[]{"item2.1", "item2.2", "item2.3"});
MyTable tbl = new MyTable(myModel);
frame.getContentPane().add(tbl);
frame.validate();
});
} finally {
SwingUtilities.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
static class MyTable extends JTable implements TableModelListener {
public MyTable(TableModel model) {
super(model);
}
public void tableChanged(TableModelEvent event) {
super.tableChanged(event);
int column = event.getColumn();
if (column == TableModelEvent.ALL_COLUMNS) {
resizeAll();
} else {
resize(column);
}
}
protected void resizeAll() {
for (int i = 0; i < getModel().getColumnCount(); i++) {
resize(i);
}
}
protected void resize(int column) {
TableCellEditor editor = null;
TableCellRenderer renderer = null;
Component comp;
int width=0;
for (int row = 0; row < getModel().getRowCount(); row++) {
editor = this.getCellEditor(row, column);
if (editor != null) {
comp = editor.getTableCellEditorComponent(
this, // table
getModel().getValueAt(row,column), // value
false, // isSelected
row, // row
column // column
);
if (comp != null) {
width = Math.max(width, comp.getPreferredSize().width);
}
}
renderer = this.getCellRenderer(row, column);
if (renderer != null) {
comp = renderer.getTableCellRendererComponent(
this, // table
getModel().getValueAt(row, column), // value
false, // isSelected
false, // hasFocus
row, // row
column // column
);
if (comp != null) {
width = Math.max(width, comp.getPreferredSize().width);
}
}
}
getColumnModel().getColumn(column).setPreferredWidth(width);
this.revalidate();
this.repaint();
}
}
}
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