Relocate Source to proper directory.

src/main/java/appeng/me/helpers/GenericInterestManager.java

@@ -0,0 +1,94 @@
+package appeng.me.helpers;
+
+import java.util.LinkedList;
+import java.util.Set;
+
+import appeng.api.storage.data.IAEStack;
+
+import com.google.common.collect.SetMultimap;
+
+public class GenericInterestManager<T>
+{
+
+	class SavedTransactions
+	{
+
+		public final boolean put;
+		public final IAEStack stack;
+		public final T iw;
+
+		public SavedTransactions(boolean putOperation, IAEStack myStack, T watcher) {
+			put = putOperation;
+			stack = myStack;
+			iw = watcher;
+		}
+	};
+
+	private final SetMultimap<IAEStack, T> container;
+	private LinkedList<SavedTransactions> transactions = null;
+	private int transDepth = 0;
+
+	public GenericInterestManager(SetMultimap<IAEStack, T> interests) {
+		container = interests;
+	}
+
+	public void enableTransactions()
+	{
+		if ( transDepth == 0 )
+			transactions = new LinkedList();
+
+		transDepth++;
+	}
+
+	public void disableTransactions()
+	{
+		transDepth--;
+
+		if ( transDepth == 0 )
+		{
+			LinkedList<SavedTransactions> myActions = transactions;
+			transactions = null;
+
+			for (SavedTransactions t : myActions)
+			{
+				if ( t.put )
+					put( t.stack, t.iw );
+				else
+					remove( t.stack, t.iw );
+			}
+		}
+	}
+
+	public boolean containsKey(IAEStack stack)
+	{
+		return container.containsKey( stack );
+	}
+
+	public Set<T> get(IAEStack stack)
+	{
+		return container.get( stack );
+	}
+
+	public boolean put(IAEStack stack, T iw)
+	{
+		if ( transactions != null )
+		{
+			transactions.add( new SavedTransactions( true, stack, iw ) );
+			return true;
+		}
+		else
+			return container.put( stack, iw );
+	}
+
+	public boolean remove(IAEStack stack, T iw)
+	{
+		if ( transactions != null )
+		{
+			transactions.add( new SavedTransactions( true, stack, iw ) );
+			return true;
+		}
+		else
+			return container.remove( stack, iw );
+	}
+
+}