1 files changed, 0 insertions, 76 deletions
diff --git a/main/src/cgeo/geocaching/utils/Subject.java b/main/src/cgeo/geocaching/utils/Subject.java
deleted file mode 100644
index b1754cc..0000000
--- a/main/src/cgeo/geocaching/utils/Subject.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package cgeo.geocaching.utils;
-
-import java.util.LinkedHashSet;
-import java.util.Set;
-
-/**
- * Synchronized implementation of the {@link ISubject} interface.
- *
- * @param <T>
- *         the kind of data to observe
- */
-public class Subject<T> implements ISubject<T> {
-
-    /**
-     * Collection of observers.
-     */
-    protected final Set<IObserver<? super T>> observers = new LinkedHashSet<IObserver<? super T>>();
-
-    @Override
-    public synchronized boolean addObserver(final IObserver<? super T> observer) {
-        final boolean added = observers.add(observer);
-        if (added && observers.size() == 1) {
-            onFirstObserver();
-        }
-        return added;
-    }
-
-    @Override
-    public synchronized boolean deleteObserver(final IObserver<? super T> observer) {
-        final boolean removed = observers.remove(observer);
-        if (removed && observers.isEmpty()) {
-            onLastObserver();
-        }
-        return removed;
-    }
-
-    @Override
-    public synchronized boolean notifyObservers(final T arg) {
-        final boolean nonEmpty = !observers.isEmpty();
-        for (final IObserver<? super T> observer : observers) {
-            observer.update(arg);
-        }
-        return nonEmpty;
-    }
-
-    @Override
-    public synchronized int sizeObservers() {
-        return observers.size();
-    }
-
-    @Override
-    public synchronized boolean clearObservers() {
-        final boolean nonEmpty = !observers.isEmpty();
-        for (final IObserver<? super T> observer : observers) {
-            deleteObserver(observer);
-        }
-        return nonEmpty;
-    }
-
-    /**
-     * Method called when the collection of observers goes from empty to non-empty.
-     * <p/>
-     * The default implementation does nothing and may be overwritten by child classes.
-     */
-    protected void onFirstObserver() {
-    }
-
-    /**
-     * Method called when the collection of observers goes from non-empty to empty.
-     * <p/>
-     * The default implementation does nothing and may be overwritten by child classes.
-     */
-    protected void onLastObserver() {
-    }
-
-}