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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jfreechart/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * ------------------------- 28: * TimeSeriesTableModel.java 29: * ------------------------- 30: * (C) Copyright 2001-2005, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: TimeSeriesTableModel.java,v 1.3.2.1 2005/10/25 21:35:24 mungady Exp $ 36: * 37: * Changes 38: * ------- 39: * 14-Nov-2001 : Version 1 (DG); 40: * 05-Apr-2002 : Removed redundant first column (DG); 41: * 24-Jun-2002 : Removed unnecessary local variable (DG); 42: * 07-Oct-2002 : Fixed errors reported by Checkstyle (DG); 43: * 44: */ 45: 46: package org.jfree.data.time; 47: 48: import javax.swing.table.AbstractTableModel; 49: 50: import org.jfree.data.general.SeriesChangeEvent; 51: import org.jfree.data.general.SeriesChangeListener; 52: 53: /** 54: * Wrapper around a time series to convert it to a table model for use in 55: * a <code>JTable</code>. 56: */ 57: public class TimeSeriesTableModel extends AbstractTableModel 58: implements SeriesChangeListener { 59: 60: /** The series. */ 61: private TimeSeries series; 62: 63: /** A flag that controls whether the series is editable. */ 64: private boolean editable; 65: 66: /** The new time period. */ 67: private RegularTimePeriod newTimePeriod; 68: 69: /** The new value. */ 70: private Number newValue; 71: 72: /** 73: * Default constructor. 74: */ 75: public TimeSeriesTableModel() { 76: this(new TimeSeries("Untitled")); 77: } 78: 79: /** 80: * Constructs a table model for a time series. 81: * 82: * @param series the time series. 83: */ 84: public TimeSeriesTableModel(TimeSeries series) { 85: this(series, false); 86: } 87: 88: /** 89: * Creates a table model based on a time series. 90: * 91: * @param series the time series. 92: * @param editable if <ocde>true</code>, the table is editable. 93: */ 94: public TimeSeriesTableModel(TimeSeries series, boolean editable) { 95: this.series = series; 96: this.series.addChangeListener(this); 97: this.editable = editable; 98: } 99: 100: /** 101: * Returns the number of columns in the table model. For this particular 102: * model, the column count is fixed at 2. 103: * 104: * @return The column count. 105: */ 106: public int getColumnCount() { 107: return 2; 108: } 109: 110: /** 111: * Returns the column class in the table model. 112: * 113: * @param column The column index. 114: * 115: * @return The column class in the table model. 116: */ 117: public Class getColumnClass(int column) { 118: if (column == 0) { 119: return String.class; 120: } 121: else { 122: if (column == 1) { 123: return Double.class; 124: } 125: else { 126: return null; 127: } 128: } 129: } 130: 131: /** 132: * Returns the name of a column 133: * 134: * @param column the column index. 135: * 136: * @return The name of a column. 137: */ 138: public String getColumnName(int column) { 139: 140: if (column == 0) { 141: return "Period:"; 142: } 143: else { 144: if (column == 1) { 145: return "Value:"; 146: } 147: else { 148: return null; 149: } 150: } 151: 152: } 153: 154: /** 155: * Returns the number of rows in the table model. 156: * 157: * @return The row count. 158: */ 159: public int getRowCount() { 160: return this.series.getItemCount(); 161: } 162: 163: /** 164: * Returns the data value for a cell in the table model. 165: * 166: * @param row the row number. 167: * @param column the column number. 168: * 169: * @return The data value for a cell in the table model. 170: */ 171: public Object getValueAt(int row, int column) { 172: 173: if (row < this.series.getItemCount()) { 174: if (column == 0) { 175: return this.series.getTimePeriod(row); 176: } 177: else { 178: if (column == 1) { 179: return this.series.getValue(row); 180: } 181: else { 182: return null; 183: } 184: } 185: } 186: else { 187: if (column == 0) { 188: return this.newTimePeriod; 189: } 190: else { 191: if (column == 1) { 192: return this.newValue; 193: } 194: else { 195: return null; 196: } 197: } 198: } 199: 200: } 201: 202: /** 203: * Returns a flag indicating whether or not the specified cell is editable. 204: * 205: * @param row the row number. 206: * @param column the column number. 207: * 208: * @return <code>true</code> if the specified cell is editable. 209: */ 210: public boolean isCellEditable(int row, int column) { 211: if (this.editable) { 212: if ((column == 0) || (column == 1)) { 213: return true; 214: } 215: else { 216: return false; 217: } 218: } 219: else { 220: return false; 221: } 222: } 223: 224: /** 225: * Updates the time series. 226: * 227: * @param value the new value. 228: * @param row the row. 229: * @param column the column. 230: */ 231: public void setValueAt(Object value, int row, int column) { 232: 233: if (row < this.series.getItemCount()) { 234: 235: // update the time series appropriately 236: if (column == 1) { 237: try { 238: Double v = Double.valueOf(value.toString()); 239: this.series.update(row, v); 240: 241: } 242: catch (NumberFormatException nfe) { 243: System.err.println("Number format exception"); 244: } 245: } 246: } 247: else { 248: if (column == 0) { 249: // this.series.getClass().valueOf(value.toString()); 250: this.newTimePeriod = null; 251: } 252: else if (column == 1) { 253: this.newValue = Double.valueOf(value.toString()); 254: } 255: } 256: } 257: 258: /** 259: * Receives notification that the time series has been changed. Responds 260: * by firing a table data change event. 261: * 262: * @param event the event. 263: */ 264: public void seriesChanged(SeriesChangeEvent event) { 265: fireTableDataChanged(); 266: } 267: 268: }