001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ------------------------ 028 * XYDatasetTableModel.java 029 * ------------------------ 030 * (C)opyright 2003-2005, by Bryan Scott and Contributors. 031 * 032 * Original Author: Bryan Scott ; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * Changes 036 * ------- 037 * 01-Jul-2003 : Version 1 contributed by Bryan Scott (DG); 038 * 27-Apr-2005 : Change XYDataset --> TableXYDataset because the table model 039 * assumes all series share the same x-values, and this is not 040 * enforced by XYDataset. Also fixed bug 1191046, a problem 041 * in the getValueAt() method (DG); 042 * 043 */ 044 045 package org.jfree.data.xy; 046 047 import javax.swing.table.AbstractTableModel; 048 import javax.swing.table.TableModel; 049 050 import org.jfree.data.general.DatasetChangeEvent; 051 import org.jfree.data.general.DatasetChangeListener; 052 053 /** 054 * A READ-ONLY wrapper around a {@link TableXYDataset} to convert it to a 055 * table model for use in a JTable. The first column of the table shows the 056 * x-values, the remaining columns show the y-values for each series (series 0 057 * appears in column 1, series 1 appears in column 2, etc). 058 * <P> 059 * TO DO: 060 * <ul> 061 * <li>implement proper naming for x axis (getColumnName)</li> 062 * <li>implement setValueAt to remove READ-ONLY constraint (not sure how)</li> 063 * </ul> 064 * 065 * @author Bryan Scott 066 */ 067 public class XYDatasetTableModel extends AbstractTableModel 068 implements TableModel, DatasetChangeListener { 069 070 /** The dataset. */ 071 TableXYDataset model = null; 072 073 /** 074 * Default constructor. 075 */ 076 public XYDatasetTableModel() { 077 super(); 078 } 079 080 /** 081 * Creates a new table model based on the specified dataset. 082 * 083 * @param dataset the dataset. 084 */ 085 public XYDatasetTableModel(TableXYDataset dataset) { 086 this(); 087 this.model = dataset; 088 this.model.addChangeListener(this); 089 } 090 091 /** 092 * Sets the model (dataset). 093 * 094 * @param dataset the dataset. 095 */ 096 public void setModel(TableXYDataset dataset) { 097 this.model = dataset; 098 this.model.addChangeListener(this); 099 fireTableDataChanged(); 100 } 101 102 /** 103 * Returns the number of rows. 104 * 105 * @return The row count. 106 */ 107 public int getRowCount() { 108 if (this.model == null) { 109 return 0; 110 } 111 return this.model.getItemCount(); 112 } 113 114 /** 115 * Gets the number of columns in the model. 116 * 117 * @return The number of columns in the model. 118 */ 119 public int getColumnCount() { 120 if (this.model == null) { 121 return 0; 122 } 123 return this.model.getSeriesCount() + 1; 124 } 125 126 /** 127 * Returns the column name. 128 * 129 * @param column the column index. 130 * 131 * @return The column name. 132 */ 133 public String getColumnName(int column) { 134 if (this.model == null) { 135 return super.getColumnName(column); 136 } 137 if (column < 1) { 138 return "X Value"; 139 } 140 else { 141 return this.model.getSeriesKey(column - 1).toString(); 142 } 143 } 144 145 /** 146 * Returns a value of the specified cell. 147 * Column 0 is the X axis, Columns 1 and over are the Y axis 148 * 149 * @param row the row number. 150 * @param column the column number. 151 * 152 * @return The value of the specified cell. 153 */ 154 public Object getValueAt(int row, int column) { 155 if (this.model == null) { 156 return null; 157 } 158 if (column < 1) { 159 return this.model.getX(0, row); 160 } 161 else { 162 return this.model.getY(column - 1, row); 163 } 164 } 165 166 /** 167 * Receives notification that the underlying dataset has changed. 168 * 169 * @param event the event 170 * 171 * @see DatasetChangeListener 172 */ 173 public void datasetChanged(DatasetChangeEvent event) { 174 fireTableDataChanged(); 175 } 176 177 /** 178 * Returns a flag indicating whether or not the specified cell is editable. 179 * 180 * @param row the row number. 181 * @param column the column number. 182 * 183 * @return <code>true</code> if the specified cell is editable. 184 */ 185 public boolean isCellEditable(int row, int column) { 186 return false; 187 } 188 189 /** 190 * Updates the {@link XYDataset} if allowed. 191 * 192 * @param value the new value. 193 * @param row the row. 194 * @param column the column. 195 */ 196 public void setValueAt(Object value, int row, int column) { 197 if (isCellEditable(row, column)) { 198 // XYDataset only provides methods for reading a dataset... 199 } 200 } 201 202 // /** 203 // * Run a demonstration of the table model interface. 204 // * 205 // * @param args ignored. 206 // * 207 // * @throws Exception when an error occurs. 208 // */ 209 // public static void main(String args[]) throws Exception { 210 // JFrame frame = new JFrame(); 211 // JPanel panel = new JPanel(); 212 // panel.setLayout(new BorderLayout()); 213 // 214 // XYSeries s1 = new XYSeries("Series 1", true, false); 215 // for (int i = 0; i < 10; i++) { 216 // s1.add(i, Math.random()); 217 // } 218 // XYSeries s2 = new XYSeries("Series 2", true, false); 219 // for (int i = 0; i < 15; i++) { 220 // s2.add(i, Math.random()); 221 // } 222 // DefaultTableXYDataset dataset = new DefaultTableXYDataset(); 223 // dataset.addSeries(s1); 224 // dataset.addSeries(s2); 225 // XYDatasetTableModel tablemodel = new XYDatasetTableModel(); 226 // 227 // tablemodel.setModel(dataset); 228 // 229 // JTable dataTable = new JTable(tablemodel); 230 // JScrollPane scroll = new JScrollPane(dataTable); 231 // scroll.setPreferredSize(new Dimension(600, 150)); 232 // 233 // JFreeChart chart = ChartFactory.createXYLineChart( 234 // "XY Series Demo", 235 // "X", "Y", dataset, PlotOrientation.VERTICAL, 236 // true, 237 // true, 238 // false 239 // ); 240 // 241 // ChartPanel chartPanel = new ChartPanel(chart); 242 // 243 // panel.add(chartPanel, BorderLayout.CENTER); 244 // panel.add(scroll, BorderLayout.SOUTH); 245 // 246 // frame.setContentPane(panel); 247 // frame.setSize(600, 500); 248 // frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 249 // frame.show(); 250 // RefineryUtilities.centerFrameOnScreen(frame); 251 // } 252 253 }