diff -u -r1.6 -r1.7
--- ConditionsManagerImplementation.java	5 Apr 2006 09:09:10 -0000	1.6
+++ ConditionsManagerImplementation.java	3 Apr 2007 18:02:34 -0000	1.7
@@ -96,11 +96,11 @@

    {
       return detectorName;
    }

-   void addConditionsListener(ConditionsListener l)

+   public void addConditionsListener(ConditionsListener l)

    {
       listenerList.add(l);
    }

-   void removeConditionsListener(ConditionsListener l)

+   public void removeConditionsListener(ConditionsListener l)

    {
       listenerList.remove(l);
    }

diff -u -r1.6 -r1.7
--- ConditionsManager.java	5 Apr 2006 09:09:10 -0000	1.6
+++ ConditionsManager.java	3 Apr 2007 18:02:34 -0000	1.7
@@ -89,6 +89,18 @@

    public abstract void removeConditionsConverter(ConditionsConverter conv);
    
    /**

+    * Add a listener to be notified about changes to ANY conditions.
+    * @param listener The listener to add.
+    */
+   public abstract void addConditionsListener(ConditionsListener listener);
+   
+   /**
+    * Remove a global change listener.
+    * @param listener The listener to remove.
+    */
+   public abstract void removeConditionsListener(ConditionsListener listener);
+   
+   /**

     * Thrown if conditions associated with a given detector can not be found.
     */
    public static class ConditionsNotFoundException extends Exception

@@ -102,6 +114,7 @@

          super("Conditions not found for detector "+name,t);
       }
    }

+   

    /**
     * Thrown if specific set of conditions can not be found.
     */

diff -u -r1.11 -r1.12
--- Driver.java	2 Apr 2007 22:55:51 -0000	1.11
+++ Driver.java	3 Apr 2007 18:02:34 -0000	1.12
@@ -12,6 +12,7 @@

 import java.util.logging.StreamHandler;
 import org.lcsim.conditions.ConditionsManager;
 import org.lcsim.event.EventHeader;

+import org.lcsim.geometry.Detector;

 
 /**
  * A driver is a steering routine which can deal with event processing, and/or

@@ -22,23 +23,32 @@

  * and handles coordination of random numbers between Monte Carlo processors.
  *
  * @author Tony Johnson

- * @version $Id: Driver.java,v 1.11 2007/04/02 22:55:51 tonyj Exp $

+ * @version $Id: Driver.java,v 1.12 2007/04/03 18:02:34 tonyj Exp $

  */
 
 public class Driver
 {

+   // We dont use an enum, because we want to be able to test for level>some value.
+   // and because drivers can use special values for special purposes.
+   public final static int HLEVEL_DEFAULT = -1;
+   public final static int HLEVEL_OFF = 0;
+   public final static int HLEVEL_NORMAL=1;
+   public final static int HLEVEL_HIGH=3;
+   public final static int HLEVEL_FULL=5;
+   

    private static Driver mother = new MotherOfAllDrivers();
    private final List<Driver> subDrivers = new ArrayList<Driver>();
    private Driver parent = mother;

-   private int histogramLevel = -1;

+   private int histogramLevel = HLEVEL_DEFAULT;

    private Random random;
    private final String driverName;

-

+   
+   

    public Driver()
    {
       this(null);
    }

-

+   

    Driver(String name)
    {
       if (name == null || name.length() == 0)

@@ -95,8 +105,8 @@

       return Logger.getLogger(pathToMother());
    }
    

-   /** 
-    * Get the name of this driver. Normally this will be the class name of the 

+   /**
+    * Get the name of this driver. Normally this will be the class name of the

     * driver (without the packaging information).
     */
    public String getName()

@@ -114,9 +124,11 @@

     */
    public int getHistogramLevel()
    {

-      return histogramLevel < 0 ? parent.getHistogramLevel() : histogramLevel;

+      return histogramLevel <= HLEVEL_DEFAULT ? parent.getHistogramLevel() : histogramLevel;

    }

-   

+   /**
+    * Set the histogram level for this driver (and its child drivers)
+    */

    public void setHistogramLevel(int level)
    {
       histogramLevel = level;

@@ -155,6 +167,15 @@

    {
       for (Driver driver : subDrivers) driver.startOfData();
    }

+   
+   /** Called by the framework before process method when the detector geometry changes. 
+    * This method is gauranteed to be called once before the first call to process. 
+    * @param Detector The new detector
+    */
+   protected void detectorChanged(Detector detector)
+   {
+      for (Driver driver : subDrivers) driver.detectorChanged(detector);
+   }

    /**
     * Called by the framework to process an event. Don't forget to call
     * <code>super.process(event)</code> to cause the child processes to

@@ -192,6 +213,8 @@

    {
       this.random = random;
    }

+   
+   

    // The only driver that does not have a parent
    // This is used to set defaults for "inherited" items
    private static class MotherOfAllDrivers extends Driver

@@ -199,7 +222,7 @@

       private Random random = new Random();
       MotherOfAllDrivers()
       {

-         super ("TOP");

+         super("TOP");

          StreamHandler handler = new StreamHandler(System.out,new DriverFormatter());
          handler.setLevel(Level.ALL);
          getLogger().setUseParentHandlers(false);

diff -u -r1.4 -r1.5
--- DriverAdapter.java	2 Apr 2007 22:55:51 -0000	1.4
+++ DriverAdapter.java	3 Apr 2007 18:02:34 -0000	1.5
@@ -8,12 +8,13 @@

 import org.freehep.record.loop.event.RecordEvent;
 import org.freehep.record.loop.event.RecordSuppliedEvent;
 import org.lcsim.event.EventHeader;

+import org.lcsim.geometry.Detector;

 
 
 /**
  * Drive a Driver from a Record loop
  * @author Tony Johnson

- * @version $Id: DriverAdapter.java,v 1.4 2007/04/02 22:55:51 tonyj Exp $

+ * @version $Id: DriverAdapter.java,v 1.5 2007/04/03 18:02:34 tonyj Exp $

  */
 public class DriverAdapter extends RecordAdapter
 {

@@ -23,6 +24,7 @@

    // redirection of the recordSupplied method)
    private ConsoleService cs;
    private ConsoleOutputStream out;

+   private Detector detector;

    
    public DriverAdapter(Driver driver)
    {

@@ -61,13 +63,27 @@

       try
       {
          Object event = rse.getRecord();

-         if (event instanceof EventHeader) driver.process((EventHeader) event);

+         if (event instanceof EventHeader) 
+         {
+            EventHeader evt = (EventHeader) event;
+            if (detector != evt.getDetector()) 
+            {
+               detectorChanged(evt.getDetector());
+             }
+            driver.process(evt);
+         }

       }
       catch (Driver.NextEventException x)
       {
          // OK, just continue with next event.
       }
    }

+  
+   private void detectorChanged(Detector detector)
+   {
+      this.detector = detector;
+      driver.detectorChanged(detector);
+   }

    
    public void configure(ConfigurationEvent event)
    {

diff -u -r1.1 -r1.2
--- FastMC.java	14 Feb 2006 19:45:11 -0000	1.1
+++ FastMC.java	3 Apr 2007 18:02:34 -0000	1.2
@@ -7,7 +7,7 @@

  * @see org.lcsim.mc.fast
  * 
  * @author Norman Graf

- * @version $Id: FastMC.java,v 1.1 2006/02/14 19:45:11 jeremy Exp $

+ * @version $Id: FastMC.java,v 1.2 2007/04/03 18:02:34 tonyj Exp $

  */
 public class FastMC extends Driver
 {

@@ -16,7 +16,7 @@

       // Create MCFast with standard options
       Driver fast = new MCFast();
       // Turn on diagnostic histograms

-      fast.setHistogramLevel(1);

+      fast.setHistogramLevel(HLEVEL_NORMAL);

       // Add as sub-driver
       add(fast);
    }

diff -u -r1.3 -r1.4
--- index.html	6 Jan 2006 22:46:26 -0000	1.3
+++ index.html	3 Apr 2007 18:02:34 -0000	1.4
@@ -11,6 +11,7 @@

   <ul>
   <li><a target="_external" href="http://confluence.slac.stanford.edu/display/ilc/lcsim+Getting+Started  ">Getting started tutorial</a> 
   <li><a target="_external" href="http://www.lcsim.org/software/lcsim">org.lcsim home page</a>.

+  <li><a target="_external" href="http://confluence.slac.stanford.edu/x/xHE">org.lcsim frequently asked questions (with answers)</a>.

   </ul>
   </body>
 </html>