1 files changed, 41 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/events/TreeListener.java b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/events/TreeListener.java
new file mode 100755
index 0000000000..77b0cdce84
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/events/TreeListener.java
@@ -0,0 +1,41 @@
+package org.eclipse.swt.events;
+
+/*
+ * Licensed Materials - Property of IBM,
+ * (c) Copyright IBM Corp. 1998, 2001  All Rights Reserved
+ */
+
+import java.util.EventListener;
+
+/**
+ * Classes which implement this interface provide methods
+ * that deal with the expanding and collapsing of tree
+ * branches.
+ * <p>
+ * After creating an instance of a class that implements
+ * this interface it can be added to a control using the
+ * <code>addTreeListener</code> method and removed using
+ * the <code>removeTreeListener</code> method. When a branch
+ * of a tree is expanded or collapsed, the appropriate method
+ * will be invoked.
+ * </p>
+ *
+ * @see TreeAdapter
+ * @see TreeEvent
+ */
+public interface TreeListener extends EventListener {
+
+/**
+ * Sent when a tree branch is collapsed.
+ *
+ * @param e an event containing information about the tree operation
+ */
+public void treeCollapsed(TreeEvent e);
+
+/**
+ * Sent when a tree branch is expanded.
+ *
+ * @param e an event containing information about the tree operation
+ */
+public void treeExpanded(TreeEvent e);
+}