--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/stats/SwitchSettings.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,118 @@
+package org.dancres.blitz.stats;
+
+import java.util.LinkedList;
+import java.util.ArrayList;
+import java.util.Iterator;
+
+import java.util.logging.Level;
+
+import net.jini.config.ConfigurationException;
+
+import org.dancres.blitz.config.ConfigurationFactory;
+
+/**
+   This class tracks currently set profiling switches and keeps listener's
+   up-to-date on changes in switch state.
+
+   @todo Load default switch settings from configuration
+ */
+public class SwitchSettings {
+    private static final String STATS_SWITCHES = "stats";
+
+    private static SwitchSettings theSettings = new SwitchSettings();
+
+    private ArrayList theSwitches = new ArrayList();
+    private LinkedList theListeners = new LinkedList();
+
+    SwitchSettings() {
+        try {
+            Switch[] mySwitches =
+                (Switch[]) ConfigurationFactory.getEntry(STATS_SWITCHES,
+                                                         Switch[].class,
+                                                         new Switch[0]);
+
+            if (mySwitches.length != 0) {
+                for (int i = 0; i < mySwitches.length; i++) {
+                    theSwitches.add(mySwitches[i]);
+                }
+            }
+        } catch (ConfigurationException aCE) {
+            StatsBoard.theLogger.log(Level.SEVERE, "Failed to load switch settings for statistics tracking", aCE);
+        }
+    }
+
+    public static SwitchSettings get() {
+        return theSettings;
+    }
+
+    public void add(SwitchListener aListener) {
+        boolean wasAdded = false;
+
+        synchronized(theListeners) {
+            if (! theListeners.contains(aListener)) {
+                theListeners.add(aListener);
+                wasAdded = true;
+            }
+        }
+        
+        // If we added a listener - make it aware of current switch settings
+        if (wasAdded)
+            refresh(aListener);
+    }
+
+    public void remove(SwitchListener aListener) {
+        synchronized(theListeners) {
+            if (theListeners.contains(aListener))
+                theListeners.remove(aListener);
+        }
+    }
+
+    /**
+       Update the settings of a particular switch
+     */
+    public void update(Switch aSwitch) {
+        synchronized (theSwitches) {
+            int myPos = theSwitches.indexOf(aSwitch);
+            if (myPos != -1) {
+                theSwitches.remove(myPos);
+            }
+
+            theSwitches.add(aSwitch);
+        }
+
+        synchronized(theListeners) {
+            Iterator myListeners = theListeners.iterator();
+
+            while (myListeners.hasNext()) {
+                SwitchListener myListener =
+                    (SwitchListener) myListeners.next();
+
+                myListener.switchFlipped(aSwitch);
+            }
+        }
+    }
+
+    /**
+       Update settings based on the passed array of switches
+     */
+    public void update(Switch[] aListOfSwitches) {
+        for (int i = 0; i < aListOfSwitches.length; i++) {
+            update(aListOfSwitches[i]);
+        }
+    }
+
+    /**
+       Notify a switch listener of all currently set switches
+     */
+    private synchronized void refresh(SwitchListener aListener) {
+        synchronized(theSwitches) {
+            Iterator mySwitches = theSwitches.iterator();
+
+            while (mySwitches.hasNext()) {
+                Switch mySwitch = (Switch) mySwitches.next();
+
+                aListener.switchFlipped(mySwitch);
+            }
+        }
+    }
+}