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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D APIs, it currently supports bar charts, pie charts,
line charts, XY-plots and time series plots.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -------------------------
* TimeSeriesTableModel.java
* -------------------------
* (C) Copyright 2001-2014, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 14-Nov-2001 : Version 1 (DG);
* 05-Apr-2002 : Removed redundant first column (DG);
* 24-Jun-2002 : Removed unnecessary local variable (DG);
* 07-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.data.time;
import javax.swing.table.AbstractTableModel;
import org.jfree.data.general.SeriesChangeEvent;
import org.jfree.data.general.SeriesChangeListener;
/**
* Wrapper around a time series to convert it to a table model for use in
* a JTable.
*/
public class TimeSeriesTableModel extends AbstractTableModel
implements SeriesChangeListener {
/** The series. */
private TimeSeries series;
/** A flag that controls whether the series is editable. */
private boolean editable;
/** The new time period. */
private RegularTimePeriod newTimePeriod;
/** The new value. */
private Number newValue;
/**
* Default constructor.
*/
public TimeSeriesTableModel() {
this(new TimeSeries("Untitled"));
}
/**
* Constructs a table model for a time series.
*
* @param series the time series.
*/
public TimeSeriesTableModel(TimeSeries series) {
this(series, false);
}
/**
* Creates a table model based on a time series.
*
* @param series the time series.
* @param editable if {@code true}, the table is editable.
*/
public TimeSeriesTableModel(TimeSeries series, boolean editable) {
this.series = series;
this.series.addChangeListener(this);
this.editable = editable;
}
/**
* Returns the number of columns in the table model. For this particular
* model, the column count is fixed at 2.
*
* @return The column count.
*/
@Override
public int getColumnCount() {
return 2;
}
/**
* Returns the column class in the table model.
*
* @param column the column index.
*
* @return The column class in the table model.
*/
@Override
public Class getColumnClass(int column) {
if (column == 0) {
return String.class;
}
else {
if (column == 1) {
return Double.class;
}
else {
return null;
}
}
}
/**
* Returns the name of a column
*
* @param column the column index.
*
* @return The name of a column.
*/
@Override
public String getColumnName(int column) {
if (column == 0) {
return "Period:";
}
else {
if (column == 1) {
return "Value:";
}
else {
return null;
}
}
}
/**
* Returns the number of rows in the table model.
*
* @return The row count.
*/
@Override
public int getRowCount() {
return this.series.getItemCount();
}
/**
* Returns the data value for a cell in the table model.
*
* @param row the row number.
* @param column the column number.
*
* @return The data value for a cell in the table model.
*/
@Override
public Object getValueAt(int row, int column) {
if (row < this.series.getItemCount()) {
if (column == 0) {
return this.series.getTimePeriod(row);
}
else {
if (column == 1) {
return this.series.getValue(row);
}
else {
return null;
}
}
}
else {
if (column == 0) {
return this.newTimePeriod;
}
else {
if (column == 1) {
return this.newValue;
}
else {
return null;
}
}
}
}
/**
* Returns a flag indicating whether or not the specified cell is editable.
*
* @param row the row number.
* @param column the column number.
*
* @return true if the specified cell is editable.
*/
@Override
public boolean isCellEditable(int row, int column) {
if (this.editable) {
if ((column == 0) || (column == 1)) {
return true;
}
else {
return false;
}
}
else {
return false;
}
}
/**
* Updates the time series.
*
* @param value the new value.
* @param row the row.
* @param column the column.
*/
@Override
public void setValueAt(Object value, int row, int column) {
if (row < this.series.getItemCount()) {
// update the time series appropriately
if (column == 1) {
try {
Double v = Double.valueOf(value.toString());
this.series.update(row, v);
}
catch (NumberFormatException nfe) {
System.err.println("Number format exception");
}
}
}
else {
if (column == 0) {
// this.series.getClass().valueOf(value.toString());
this.newTimePeriod = null;
}
else if (column == 1) {
this.newValue = Double.valueOf(value.toString());
}
}
}
/**
* Receives notification that the time series has been changed. Responds
* by firing a table data change event.
*
* @param event the event.
*/
@Override
public void seriesChanged(SeriesChangeEvent event) {
fireTableDataChanged();
}
}