/**
* Constructs from nothing.
*
* @throws VisADException if a VisAD failure occurs.
* @throws RemoteException if a Java RMI failure occurs.
*/
public GriddedSoundingControl() throws VisADException, RemoteException {
super(false);
gridLocs = new LineDrawing("GriddedSoundingControl gridLocs");
probe = new LineProbe();
probe.setVisible(true);
setSounding(0);
}
/**
* Sets the horizontal position of the probe. This method is used by the persistance mechanism.
*
* @param p The horizontal position of the probe.
* @throws VisADException if <code>p.getType()</code> isn't {@link
* visad.RealTupleType#SpatialCartesian2DTuple} or if another VisAD failure occurs.
* @throws RemoteException if a Java RMI failure occurs.
*/
public void setPosition(RealTuple p) throws VisADException, RemoteException {
/*
* The following fires a PropertyChangeEvent for the probe
* position.
*/
probe.setPosition(p);
}
/** Reset the position of the probe to the center. */
private void resetProbePosition() {
try {
if (probe != null) {
probe.setPosition(0.0, 0.0);
}
} catch (Exception exc) {
logException("Resetting probe position", exc);
}
}
/**
* Constructs the vertical profile display and control buttons
*
* @param dataChoice The data for this instance.
* @return <code>true</code> if and only if this instance was correctly initialized.
* @throws VisADException couldn't create a VisAD object needed
* @throws RemoteException couldn't create a remote object needed
*/
public boolean init(DataChoice dataChoice) throws VisADException, RemoteException {
/*
* Initialize the superclass.
*/
if (!super.init()) {
return false;
}
setSpatialLoci(gridLocs);
if (!setData(dataChoice)) {
return false;
}
/*
* Add the listener here (as opposed to in the contructor) so we
* don't get spurious events before we are fully initialized
*/
probe.addPropertyChangeListener(
SelectorDisplayable.PROPERTY_POSITION,
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
if (getActive() && getHaveInitialized()) {
lineProbeWasMoved();
}
}
});
probe.setPointSize(getDisplayScale());
probe.setAutoSize(true);
addDisplayable(probe, FLAG_COLOR);
addDisplayable(gridLocs, FLAG_COLOR);
dataNode = SoundingDataNode.getInstance(new Listener());
dataNode.setData(getData(getDataInstance()));
return true;
}
/**
* Receive shared-data updates.
*
* @param from The {@link ucar.unidata.collab.Sharable} object from which this event originates.
* @param dataId The shared data identifier.
* @param data The shared data.
*/
public void receiveShareData(Sharable from, Object dataId, Object[] data) {
if (!(dataId.equals(SHARE_POSITION))) {
super.receiveShareData(from, dataId, data); // pass it up
} else {
if (probe == null) {
return;
}
try {
/*
* The following fires a PropertyChangeEvent for the
* probe position.
*/
probe.setPosition((RealTuple) data[0]);
} catch (Exception ex) {
logException("receiveShareData:" + dataId, ex);
}
}
}
/**
* Returns the horizontal position of the probe or <code>null</code> if the probe's position is
* indeterminate.
*
* @return The horizontal probe position or <code>null </code>. The {@link visad.MathType} of a
* non-<code>null</code> returned object is {@link
* visad.RealTupleType#SpatialCartesian2DTuple}.
* @throws VisADException if a VisAD failure occurs.
* @throws RemoteException if a Java RMI failure occurs.
*/
public RealTuple getPosition() throws VisADException, RemoteException {
return ((probe != null) ? probe.getPosition() : null);
}