Only update last seen when watching is enabled.

Clover/app/src/main/java/org/floens/chan/core/manager/ThreadManager.java

@@ -565,13 +565,15 @@ public class ThreadManager implements Loader.LoaderListener {
     }
 
     private void updateLastSeen() {
-        Pin pin = ChanApplication.getWatchManager().findPinByLoadable(loader.getLoadable());
-        if (pin != null) {
-            Post last = pin.getLastSeenPost();
-            if (last != null) {
-                lastSeenPost = last.no;
-            } else {
-                lastSeenPost = -1;
+        if (ChanApplication.getWatchManager().getWatchEnabled()) {
+            Pin pin = ChanApplication.getWatchManager().findPinByLoadable(loader.getLoadable());
+            if (pin != null) {
+                Post last = pin.getLastSeenPost();
+                if (last != null) {
+                    lastSeenPost = last.no;
+                } else {
+                    lastSeenPost = -1;
+                }
             }
         }
     }

Clover/app/src/main/java/org/floens/chan/core/manager/WatchManager.java

@@ -134,7 +134,7 @@ public class WatchManager implements ChanApplication.ForegroundChangedListener {
     public void removePin(Pin pin) {
         pins.remove(pin);
         ChanApplication.getDatabaseManager().removePin(pin);
-        pin.destroyWatcher();
+        pin.destroy();
 
         onPinsChanged();
     }
@@ -165,9 +165,10 @@ public class WatchManager implements ChanApplication.ForegroundChangedListener {
     }
 
     public void onPinViewed(Pin pin) {
-        pin.getPinWatcher().onViewed();
-
-        onPinsChanged();
+        if (getWatchEnabled()) {
+            pin.getPinWatcher().onViewed();
+            onPinsChanged();
+        }
     }
 
     public void addPinListener(PinListener l) {
@@ -294,7 +295,7 @@ public class WatchManager implements ChanApplication.ForegroundChangedListener {
         pendingTimer = null;
 
         for (Pin pin : getWatchingPins()) {
-            pin.updateWatch();
+            pin.update();
         }
 
         updateTimerState();

Clover/app/src/main/java/org/floens/chan/core/model/Pin.java

@@ -66,11 +66,11 @@ public class Pin {
         return getPinWatcher().getLastSeenPost();
     }
 
-    public void updateWatch() {
+    public void update() {
         getPinWatcher().update();
     }
 
-    public void destroyWatcher() {
+    public void destroy() {
         if (pinWatcher != null) {
             pinWatcher.destroy();
             pinWatcher = null;