001/* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2008, 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 2003-2008, 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 045package org.jfree.data.xy; 046 047import javax.swing.table.AbstractTableModel; 048import javax.swing.table.TableModel; 049 050import org.jfree.data.general.DatasetChangeEvent; 051import 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 */ 065public class XYDatasetTableModel extends AbstractTableModel 066 implements TableModel, DatasetChangeListener { 067 068 /** The dataset. */ 069 TableXYDataset model = null; 070 071 /** 072 * Default constructor. 073 */ 074 public XYDatasetTableModel() { 075 super(); 076 } 077 078 /** 079 * Creates a new table model based on the specified dataset. 080 * 081 * @param dataset the dataset. 082 */ 083 public XYDatasetTableModel(TableXYDataset dataset) { 084 this(); 085 this.model = dataset; 086 this.model.addChangeListener(this); 087 } 088 089 /** 090 * Sets the model (dataset). 091 * 092 * @param dataset the dataset. 093 */ 094 public void setModel(TableXYDataset dataset) { 095 this.model = dataset; 096 this.model.addChangeListener(this); 097 fireTableDataChanged(); 098 } 099 100 /** 101 * Returns the number of rows. 102 * 103 * @return The row count. 104 */ 105 public int getRowCount() { 106 if (this.model == null) { 107 return 0; 108 } 109 return this.model.getItemCount(); 110 } 111 112 /** 113 * Gets the number of columns in the model. 114 * 115 * @return The number of columns in the model. 116 */ 117 public int getColumnCount() { 118 if (this.model == null) { 119 return 0; 120 } 121 return this.model.getSeriesCount() + 1; 122 } 123 124 /** 125 * Returns the column name. 126 * 127 * @param column the column index. 128 * 129 * @return The column name. 130 */ 131 public String getColumnName(int column) { 132 if (this.model == null) { 133 return super.getColumnName(column); 134 } 135 if (column < 1) { 136 return "X Value"; 137 } 138 else { 139 return this.model.getSeriesKey(column - 1).toString(); 140 } 141 } 142 143 /** 144 * Returns a value of the specified cell. 145 * Column 0 is the X axis, Columns 1 and over are the Y axis 146 * 147 * @param row the row number. 148 * @param column the column number. 149 * 150 * @return The value of the specified cell. 151 */ 152 public Object getValueAt(int row, int column) { 153 if (this.model == null) { 154 return null; 155 } 156 if (column < 1) { 157 return this.model.getX(0, row); 158 } 159 else { 160 return this.model.getY(column - 1, row); 161 } 162 } 163 164 /** 165 * Receives notification that the underlying dataset has changed. 166 * 167 * @param event the event 168 * 169 * @see DatasetChangeListener 170 */ 171 public void datasetChanged(DatasetChangeEvent event) { 172 fireTableDataChanged(); 173 } 174 175 /** 176 * Returns a flag indicating whether or not the specified cell is editable. 177 * 178 * @param row the row number. 179 * @param column the column number. 180 * 181 * @return <code>true</code> if the specified cell is editable. 182 */ 183 public boolean isCellEditable(int row, int column) { 184 return false; 185 } 186 187 /** 188 * Updates the {@link XYDataset} if allowed. 189 * 190 * @param value the new value. 191 * @param row the row. 192 * @param column the column. 193 */ 194 public void setValueAt(Object value, int row, int column) { 195 if (isCellEditable(row, column)) { 196 // XYDataset only provides methods for reading a dataset... 197 } 198 } 199 200// /** 201// * Run a demonstration of the table model interface. 202// * 203// * @param args ignored. 204// * 205// * @throws Exception when an error occurs. 206// */ 207// public static void main(String args[]) throws Exception { 208// JFrame frame = new JFrame(); 209// JPanel panel = new JPanel(); 210// panel.setLayout(new BorderLayout()); 211// 212// XYSeries s1 = new XYSeries("Series 1", true, false); 213// for (int i = 0; i < 10; i++) { 214// s1.add(i, Math.random()); 215// } 216// XYSeries s2 = new XYSeries("Series 2", true, false); 217// for (int i = 0; i < 15; i++) { 218// s2.add(i, Math.random()); 219// } 220// DefaultTableXYDataset dataset = new DefaultTableXYDataset(); 221// dataset.addSeries(s1); 222// dataset.addSeries(s2); 223// XYDatasetTableModel tablemodel = new XYDatasetTableModel(); 224// 225// tablemodel.setModel(dataset); 226// 227// JTable dataTable = new JTable(tablemodel); 228// JScrollPane scroll = new JScrollPane(dataTable); 229// scroll.setPreferredSize(new Dimension(600, 150)); 230// 231// JFreeChart chart = ChartFactory.createXYLineChart( 232// "XY Series Demo", 233// "X", "Y", dataset, PlotOrientation.VERTICAL, 234// true, 235// true, 236// false 237// ); 238// 239// ChartPanel chartPanel = new ChartPanel(chart); 240// 241// panel.add(chartPanel, BorderLayout.CENTER); 242// panel.add(scroll, BorderLayout.SOUTH); 243// 244// frame.setContentPane(panel); 245// frame.setSize(600, 500); 246// frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 247// frame.show(); 248// RefineryUtilities.centerFrameOnScreen(frame); 249// } 250 251}