[115] Move event handler registration to child class

src/main/java/seedu/address/model/ModelManager.java

@@ -54,7 +54,7 @@ public ModelManager(ReadOnlyAddressBook initialData, UserPrefs userPrefs) {
     @Override
     public void resetData(ReadOnlyAddressBook newData) {
         addressBook.resetData(newData);
-        indicateModelChanged();
+        indicateAddressBookChanged();
     }
 
     @Override
@@ -63,21 +63,22 @@ public ReadOnlyAddressBook getAddressBook() {
     }
 
     /** Raises an event to indicate the model has changed */
-    private void indicateModelChanged() {
+    private void indicateAddressBookChanged() {
+        logger.info("Raising AddressBookChangedEvent");
         raise(new AddressBookChangedEvent(addressBook));
     }
 
     @Override
     public synchronized void deletePerson(ReadOnlyPerson target) throws PersonNotFoundException {
         addressBook.removePerson(target);
-        indicateModelChanged();
+        indicateAddressBookChanged();
     }
 
     @Override
     public synchronized void addPerson(Person person) throws UniquePersonList.DuplicatePersonException {
         addressBook.addPerson(person);
         updateFilteredListToShowAll();
-        indicateModelChanged();
+        indicateAddressBookChanged();
     }
 
     @Override

src/main/java/seedu/address/ui/StatusBarFooter.java

@@ -7,18 +7,22 @@
 import javafx.stage.Stage;
 
 import java.util.Date;
+import java.util.logging.Logger;
 
 import org.controlsfx.control.StatusBar;
 
 import com.google.common.eventbus.Subscribe;
 
+import seedu.address.commons.core.EventsCenter;
+import seedu.address.commons.core.LogsCenter;
 import seedu.address.commons.events.model.AddressBookChangedEvent;
 import seedu.address.commons.util.FxViewUtil;
 
 /**
  * A controller for the status bar that is displayed at the footer of the application.
  */
 public class StatusBarFooter extends UiPart {
+    private static final Logger logger = LogsCenter.getLogger(StatusBarFooter.class);
     private StatusBar syncStatus;
     private StatusBar saveLocationStatus;
 
@@ -46,6 +50,7 @@ public void configure(String saveLocation) {
         setSyncStatus("Not updated yet in this session");
         addSaveLocation();
         setSaveLocation("./" + saveLocation);
+        EventsCenter.getInstance().registerHandler(this);
     }
 
     private void addMainPane() {

src/main/java/seedu/address/ui/UiPart.java

@@ -21,7 +21,7 @@ public abstract class UiPart {
     Stage primaryStage;
 
     public UiPart(){
-        EventsCenter.getInstance().registerHandler(this);
+
     }
 
     /**