--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/entry/OpSwitchListener.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,100 @@
+package org.dancres.blitz.entry;
+
+import org.dancres.blitz.stats.SwitchListener;
+import org.dancres.blitz.stats.Switch;
+import org.dancres.blitz.stats.OpSwitch;
+import org.dancres.blitz.stats.OpStat;
+import org.dancres.blitz.stats.StatsBoard;
+import org.dancres.blitz.stats.SwitchSettings;
+
+/**
+   Listens for changes in OpSwitches pertinent to a particular Entry type
+   and manages counts and statistics accordingly.
+ */
+class OpSwitchListener implements SwitchListener {
+    private boolean trackTakes;
+    private boolean trackReads;
+    private boolean trackWrites;
+
+    private String theType;
+
+    private OpStat theTakes;
+    private OpStat theReads;
+    private OpStat theWrites;
+
+    OpSwitchListener(String aType) {
+        theType = aType;
+        theTakes = new OpStat(theType, OpStat.TAKES);
+        theReads = new OpStat(theType, OpStat.READS);
+        theWrites = new OpStat(theType, OpStat.WRITES);
+
+        SwitchSettings.get().add(this);
+    }
+
+    public synchronized void switchFlipped(Switch aSwitch) {
+        if (aSwitch instanceof OpSwitch) {
+            OpSwitch mySwitch = (OpSwitch) aSwitch;
+
+            if ((mySwitch.getType().equals(theType)) ||
+                (mySwitch.isWildcard())) {
+
+                boolean mySetting = mySwitch.isEnabled();
+
+                switch (mySwitch.getOp()) {
+                    case OpSwitch.TAKE_OPS : {
+                        trackTakes = mySetting;
+
+                        if (mySetting)
+                            StatsBoard.get().add(theTakes);
+                        else
+                            StatsBoard.get().remove(theTakes);
+
+                        break;
+                    }
+                    case OpSwitch.READ_OPS : {
+                        trackReads = mySetting;
+
+                        if (mySetting)
+                            StatsBoard.get().add(theReads);
+                        else
+                            StatsBoard.get().remove(theReads);
+
+                        break;
+                    }
+                    case OpSwitch.WRITE_OPS : {
+                        trackWrites = mySetting;
+
+                        if (mySetting)
+                            StatsBoard.get().add(theWrites);
+                        else
+                            StatsBoard.get().remove(theWrites);
+
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    synchronized void didWrite() {
+        if (trackWrites)
+            theWrites.incCount();
+    }
+
+    synchronized void didRead() {
+        if (trackReads)
+            theReads.incCount();
+    }
+
+    synchronized void didTake() {
+        if (trackTakes)
+            theTakes.incCount();
+    }
+
+    void destroy() {
+        SwitchSettings.get().remove(this);
+        StatsBoard.get().remove(theReads);
+        StatsBoard.get().remove(theTakes);
+        StatsBoard.get().remove(theWrites);
+    }
+}