### Eclipse Workspace Patch 1.0
#P org.eclipse.jface
Index: src/org/eclipse/jface/viewers/TreeViewer.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jface/src/org/eclipse/jface/viewers/TreeViewer.java,v
retrieving revision 1.91
diff -u -r1.91 TreeViewer.java
--- src/org/eclipse/jface/viewers/TreeViewer.java	6 Nov 2007 18:43:20 -0000	1.91
+++ src/org/eclipse/jface/viewers/TreeViewer.java	9 Nov 2007 20:37:53 -0000
@@ -1116,4 +1116,16 @@
 			super.editElement(element, column);
 		}
 	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.jface.viewers.AbstractTreeViewer#getChildren(org.eclipse.swt.widgets.Widget, java.lang.Object[])
+	 */
+//	public Item[] getChildren(Widget widget, Object[] elementChildren) {
+//		Item[] items = super.getChildren(widget,elementChildren);
+//		if(elementChildren.length == 0 || items.length / elementChildren.length > 5){//Will there be a lot of disposal?
+//			getTree().removeAll();
+//			items =  getChildren(widget);
+//		}
+//		return items;
+//	}
 }
Index: src/org/eclipse/jface/viewers/AbstractTreeViewer.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java,v
retrieving revision 1.128
diff -u -r1.128 AbstractTreeViewer.java
--- src/org/eclipse/jface/viewers/AbstractTreeViewer.java	6 Nov 2007 22:13:24 -0000	1.128
+++ src/org/eclipse/jface/viewers/AbstractTreeViewer.java	9 Nov 2007 20:37:53 -0000
@@ -2537,8 +2537,8 @@
 			oldCnt = getItemCount(tree);
 		}
 
-		Item[] items = getChildren(widget);
-
+		Item[] items = getChildren(widget,elementChildren);
+		
 		// save the expanded elements
 		CustomHashtable expanded = newHashtable(CustomHashtable.DEFAULT_CAPACITY); // assume
 																					// num
@@ -2685,6 +2685,18 @@
 	}
 
 	/**
+	 * Return the items to be refreshed as part of an update. elementChildren are the
+	 * new elements.
+	 * @param widget
+	 * @param elementChildren
+	 * @since 3.4
+	 * @return Item[]
+	 */
+	public Item[] getChildren(Widget widget,  Object[] elementChildren) {
+		return getChildren(widget);
+	}
+
+	/**
 	 * Updates the "+"/"-" icon of the tree node from the given element. It
 	 * calls <code>isExpandable</code> to determine whether an element is
 	 * expandable.