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1 package JSci.beans;
2
3 import java.beans.*;
4 import java.util.Vector  ;
5 import JSci.maths.*;
6 import JSci.maths.matrices.DoubleMatrix;
7 import JSci.maths.vectors.DoubleVector;
8
9 public final class VariableBean extends Object implements java.io.Serializable {
10 private PropertyChangeSupport changes=new PropertyChangeSupport(this);
11 private Vector variableListeners=new Vector ();
12 private String variable=new String ();
13 private Object value;
14
15 public VariableBean() {}
16 public synchronized void setVariable(String var) {
17 String oldVar=variable;
18 variable=var;
19 changes.firePropertyChange("variable",oldVar,var);
20 }
21 public synchronized String getVariable() {
22 return variable;
23 }
24 public synchronized void setValueAsNumber(double x) {
25 value=new MathDouble(x);
26 changes.firePropertyChange("valueAsNumber",null,new Double (x));
27 fireVariableChanged(new VariableEvent(this,variable,value));
28 }
29 public synchronized double getValueAsNumber() {
30 if(value instanceof MathDouble)
31 return ((MathDouble)value).value();
32 else
33 return Double.NaN;
34 }
35 public synchronized void setValueAsVector(double v[]) {
36 value=new DoubleVector(v);
37 changes.firePropertyChange("valueAsVector",null,v);
38 fireVariableChanged(new VariableEvent(this,variable,value));
39 }
40 public synchronized void setValueAsMatrix(double m[][]) {
41 value=new DoubleMatrix(m);
42 changes.firePropertyChange("valueAsMatrix",null,m);
43 fireVariableChanged(new VariableEvent(this,variable,value));
44 }
45 public synchronized void addPropertyChangeListener(PropertyChangeListener l) {
46 changes.addPropertyChangeListener(l);
47 }
48 public synchronized void removePropertyChangeListener(PropertyChangeListener l) {
49 changes.removePropertyChangeListener(l);
50 }
51 public synchronized void addVariableListener(VariableListener l) {
52 variableListeners.addElement(l);
53 }
54 public synchronized void removeVariableListener(VariableListener l) {
55 variableListeners.removeElement(l);
56 }
57 private void fireVariableChanged(VariableEvent evt) {
58 for(int i=0;i<variableListeners.size();i++)
59 ((VariableListener)variableListeners.elementAt(i)).variableChanged(evt);
60 }
61 }
62
63 |
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