/*
JOpenChart Java Charting Library and Toolkit
Copyright (C) 2001 Sebastian M�ller
http://jopenchart.sourceforge.net
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
AbstractChartDataModel.java
Created on 28. Juni 2001, 18:58
*/
package de.progra.charting.model;
import de.progra.charting.event.ChartDataModelListener;
import de.progra.charting.event.ChartDataModelEvent;
import javax.swing.event.EventListenerList;
import de.progra.charting.CoordSystem;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.TreeSet;
import java.util.Set;
import java.util.HashMap;
/**
* This class implements the event-handling methods for a chart model.
* @author mueller
* @version 1.0
*/
public abstract class AbstractChartDataModel implements ChartDataModel {
/** The listener list. */
protected EventListenerList listener = new EventListenerList();
/** Flag defining the automatic scaling of max and min values. */
protected boolean autoscale = false;
/** Flag defining the manual scaling of max and min values. */
protected boolean manualscale = false;
/** Maximum and minimum column values to be displayed. */
protected double maxcolumn, mincolumn;
/** Maximum and minimum values to be displayed. */
protected Number maxvalue, minvalue;
/** Creates new AbstractChartDataModel */
public AbstractChartDataModel() {
}
/** Removes a ChartDataModelListener.
* @param l the ChartDataListener
*/
public void removeChartDataModelListener(ChartDataModelListener l) {
listener.remove(ChartDataModelListener.class, l);
}
/** Adds a ChartDataModelListener.
* @param l the ChartDataModelListener
*/
public void addChartDataModelListener(ChartDataModelListener l) {
listener.add(ChartDataModelListener.class, l);
}
/** Determines if the column values are numeric.
* @return <CODE>false</CODE> per default
*/
public boolean isColumnNumeric() {
return false;
}
/** Provides an empty implementation for not-editable DataModels.
* @param set the DataSet in which the value should be set
* @param index the index in the DataSet where the value should be stored
* @param value the value object
*/
public void setValueAt(int set, int index, Object value) {
}
/** Returns the class of the column values.
* @return <CODE>Object.class</CODE> per default
*/
public Class getColumnClass() {
return Object.class;
}
/** Promotes a new ChartDataModelEvent.
* @param src the source object of the event.
*/
public void fireChartDataModelChangedEvent(Object src) {
ChartDataModelEvent e = new ChartDataModelEvent(src);
Object[] ls = listener.getListenerList();
for (int i = (ls.length - 2); i >= 0; i-=2) {
if (ls[i] == ChartDataModelListener.class) {
((ChartDataModelListener)ls[i + 1]).chartDataChanged(e);
}
}
}
/** Returns the Axis Binding for a specific DataSet, ie the Axis on
* which the DataSet should be plotted
* @param set the DataSet whose Axis binding should be determined
* @return <code>DataSet.FIRST_YAXIS</code> by default.
*/
public int getAxisBinding(int set) {
return CoordSystem.FIRST_YAXIS;
}
/** Provides a default empty implementation.
* @param set the DataSet
* @param axis the Axis binding
*/
public void setAxisBinding(int set, int axis) {
}
public void setAutoScale(boolean b) {
autoscale = b;
}
public boolean isAutoScale() {
return autoscale;
}
/** Enables the manual axis scaling. Set the desired
* maximum and minimum values using the setMaximum...Value
* functions.
*/
public void setManualScale(boolean b) {
manualscale = b;
}
/** Returns true if the manual axis scaling is enabled. This overrides
* the enabled automatic axis scaling.
*/
public boolean isManualScale() {
return manualscale;
}
/** Sets the maximum x-axis value. */
public void setMaximumColumnValue(double d) {
maxcolumn = d;
}
/** Sets the minimum x-axis value. */
public void setMinimumColumnValue(double d) {
mincolumn = d;
}
/** Sets the maximum y-axis value. */
public void setMaximumValue(Number n) {
maxvalue = n;
}
/** Sets the minimum y-axis value. */
public void setMinimumValue(Number n) {
minvalue = n;
}
public double getManualMaximumColumnValue() {
return maxcolumn;
}
public double getManualMinimumColumnValue() {
return mincolumn;
}
public Number getManualMaximumValue() {
return maxvalue;
}
public Number getManualMinimumValue() {
return minvalue;
}
/** Returns the title of the DataSet.
* @param set the DataSet identifier
* @return the the number of
* the DataSet per default.
*/
public String getDataSetName(int set) {
return "Dataset "+set;
}
/** Compares this ChartDataModel with another object.
* @param o the object to compare with
* @return true, if o is an AbstractChartDataModel, the number of
* DataSets is equal and all DataSet names and column values are equal.
*/
public boolean equals(Object o) {
if(o == null)
return false;
try {
AbstractChartDataModel model = (AbstractChartDataModel)o;
if(getDataSetNumber() != model.getDataSetNumber()) {
return false;
}
for(int i = 0; i < getDataSetNumber(); i++) {
if(!getDataSetName(i).equals(model.getDataSetName(i))) {
return false;
}
for(int j = 0; j < getDataSetLength(j); j++) {
if(!getColumnValueAt(j).equals(model.getColumnValueAt(j))) {
return false;
}
}
}
} catch(Exception e) { return false;}
return true;
}
protected abstract TreeSet getOrderedValues(int axis);
protected abstract double getFirstColumnValue();
protected abstract double getLastColumnValue();
}