PROMS/Volian.Controls.Library/DisplayTransition.cs

@@ -657,7 +657,9 @@ namespace Volian.Controls.Library
 		private void tvTran_BeforeExpand(object sender, TreeViewCancelEventArgs e)
 		{
 			VETreeNode tn = ((VETreeNode)e.Node);
-			tn.LoadChildren(false);
+			// true fixes empty expand, but allows for transitions 'way down' in RNO tree. HVJ & PAL wanted to
+			// allow this (12/2/09)
+			tn.LoadChildren(true); 
 		}
 		private void cbTranSects_SelectedIndexChanged(object sender, EventArgs e)
 		{
@@ -703,6 +705,25 @@ namespace Volian.Controls.Library
 		private void tvTran_AfterSelect(object sender, TreeViewEventArgs e)
 		{
 			if (_InitializingTrans) return;
+			// check if node is a true end-point, i.e. not a 'part' node.  If part node, don't
+			// allow selection.
+			bool allowSave = false;
+			VETreeNode vt = tvTran.SelectedNode as VETreeNode;
+			if (vt != null)
+			{
+				ItemInfo ii = vt.VEObject as ItemInfo;
+				if (ii != null) allowSave = true;
+			}
+			if (!_DoingRange)
+			{	
+				btnTranSave.Enabled = allowSave;
+				return;
+			}
+			if (!allowSave)
+			{
+				MessageBox.Show("Must select a valid step, not a grouping part such as 'RNO', 'Steps', etc");
+				return;
+			}
 			if (_DoingRange)
 			{
 				if (_RangeNode1 == null || (_RangeNode1 != null && _RangeNode2 != null))