--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/nabble/model/FilteredNodeIterator.java	Thu Mar 21 19:15:52 2019 -0600
@@ -0,0 +1,38 @@
+package nabble.model;
+
+import java.util.NoSuchElementException;
+import fschmidt.util.java.Filter;
+
+
+public final class FilteredNodeIterator extends NodeIterator<Node> {
+	private final NodeIterator<? extends Node> iter;
+	private final Filter<Node> filter;
+	private Node next = null;
+
+	public FilteredNodeIterator(NodeIterator<? extends Node> iter,Filter<Node> filter) {
+		this.iter = iter;
+		this.filter = filter;
+	}
+
+	public boolean hasNext() {
+		while( next == null && iter.hasNext() ) {
+			Node node = iter.next();
+			if( filter.ok(node) )
+				next = node;
+		}
+		return next != null;
+	}
+
+	public Node next() throws NoSuchElementException {
+		if( !hasNext() )
+			throw new NoSuchElementException();
+		Node node = next;
+		next = null;
+		return node;
+	}
+
+	public void close() {
+		iter.close();
+	}
+
+}