1 files changed, 40 insertions, 0 deletions
diff --git a/CSMath/src/bezier/CanvasRepainter.java b/CSMath/src/bezier/CanvasRepainter.java
new file mode 100644
index 0000000..43c16e3
--- /dev/null
+++ b/CSMath/src/bezier/CanvasRepainter.java
@@ -0,0 +1,40 @@
+package bezier;
+
+import javax.swing.JComponent;
+import javax.swing.event.ListDataEvent;
+import javax.swing.event.ListDataListener;
+
+/**
+ * Listener to repaint a component whenever a list changes.
+ * 
+ * @author bjculkin
+ *
+ */
+public class CanvasRepainter implements ListDataListener {
+	private final JComponent comp;
+
+	/**
+	 * Create a new repaint listener.
+	 * 
+	 * @param canvas
+	 *            The component to repaint.
+	 */
+	public CanvasRepainter(JComponent canvas) {
+		this.comp = canvas;
+	}
+
+	@Override
+	public void intervalRemoved(ListDataEvent e) {
+		comp.repaint();
+	}
+
+	@Override
+	public void intervalAdded(ListDataEvent e) {
+		comp.repaint();
+	}
+
+	@Override
+	public void contentsChanged(ListDataEvent e) {
+		comp.repaint();
+	}
+}
+\ No newline at end of file