russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
135 lines
4.7 KiB
Java
135 lines
4.7 KiB
Java
/*
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* Copyright (c) 1998, 2025, 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.BorderLayout;
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import java.awt.Component;
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import java.awt.FontMetrics;
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import java.util.Vector;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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import javax.swing.JScrollPane;
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import javax.swing.JTable;
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import javax.swing.SwingUtilities;
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import javax.swing.table.TableCellRenderer;
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import javax.swing.table.TableColumn;
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/*
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* @test
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* @bug 4193727
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* @summary Tests that resizing JTable via TableColumn's
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* setWidth(int) repaints correctly
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual bug4193727
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*/
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public class bug4193727 {
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static EnhancedJTable tblResults;
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static JButton bTest = new JButton("Resize");
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private static final String INSTRUCTIONS = """
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Push button "Resize".
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If either of the following happen, test fails:
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1) The size of the columns change
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2) The JTable is not repainted correctly
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Otherwise test passes.
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""";
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public static void main(String[] args) throws Exception {
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PassFailJFrame.builder()
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.instructions(INSTRUCTIONS)
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.columns(50)
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.testUI(bug4193727::createTestUI)
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.build()
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.awaitAndCheck();
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}
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public static JFrame createTestUI() {
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JFrame frame = new JFrame("bug4193727");
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Vector v = new Vector();
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Vector data = new Vector();
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Vector cols = new Vector();
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cols.add("Name");
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cols.add("Address");
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data.add("Steve");
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data.add("100 East Main Street");
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v.add(data);
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data.add("Richard");
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data.add("99 Main Road");
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v.add(data);
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frame.setLayout(new BorderLayout());
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tblResults = new EnhancedJTable(v, cols);
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MyTableHeader mth = new MyTableHeader();
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for (int i = 0; i < tblResults.getColumnCount(); i++)
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tblResults.getColumnModel().getColumn(i).setHeaderRenderer(mth.getTHR());
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tblResults.setAutoResizeMode(EnhancedJTable.AUTO_RESIZE_OFF);
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JScrollPane pane = new JScrollPane(tblResults);
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frame.add(pane, BorderLayout.CENTER);
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JPanel panel = new JPanel();
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panel.add(bTest);
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frame.add(panel, BorderLayout.EAST);
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bTest.addActionListener(e -> tblResults.autoSizeColumns());
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frame.setSize(300, 200);
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return frame;
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}
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}
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class MyTableHeader extends TableColumn {
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public TableCellRenderer getTHR() {
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return createDefaultHeaderRenderer();
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}
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}
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class EnhancedJTable extends JTable {
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public EnhancedJTable(Vector data, Vector colNames) {
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super(data, colNames);
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}
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public synchronized void autoSizeColumns() {
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setAutoResizeMode(AUTO_RESIZE_OFF);
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int colcnt = getColumnCount();
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int rowcnt = getRowCount();
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for (int i = 0; i < colcnt; i++) {
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// get the max column width needed
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Component cell = getColumnModel().getColumn(i).getHeaderRenderer()
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.getTableCellRendererComponent(this, null, false, false, -1, i);
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FontMetrics fm = cell.getFontMetrics(cell.getFont());
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int max = SwingUtilities.computeStringWidth(fm, getColumnModel().getColumn(i).getHeaderValue()
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.toString() + " ");
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for (int j = 0; j < rowcnt; j++) {
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// add 2 spaces to account for gutter
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int width = SwingUtilities.computeStringWidth(fm, getValueAt(j, i).toString() + " ");
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if (max < width) max = width;
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}
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// set the new column width
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getColumnModel().getColumn(i).setWidth(max);
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}
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}
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}
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