public virtual void addPointer(DialPointer pointer)
{
if (pointer == null)
{
string str = "Null 'pointer' argument.";
Throwable.__\u003CsuppressFillInStackTrace\u003E();
throw new IllegalArgumentException(str);
}
else
{
this.pointers.add((object) pointer);
pointer.addChangeListener((DialLayerChangeListener) this);
this.fireChangeEvent();
}
}
public virtual void removePointer(DialPointer pointer)
{
this.removeLayer(this.getPointerIndex(pointer));
}
public virtual int getPointerIndex(DialPointer pointer)
{
if (pointer == null)
{
string str = "Null 'pointer' argument.";
Throwable.__\u003CsuppressFillInStackTrace\u003E();
throw new IllegalArgumentException(str);
}
else
return this.pointers.indexOf((object) pointer);
}