diff -r 96402b172173 -r 716a777c1c98 treeitem.cpp
--- a/treeitem.cpp	Wed Oct 29 17:42:34 2008 +0000
+++ b/treeitem.cpp	Fri Jan 30 09:14:12 2009 +0000
@@ -7,6 +7,10 @@
     parentItem = parent;
     itemData = data;
 	lmo=NULL;
+
+	branchOffset=0;
+	branchCount=0;
+	lastSelectedBranchNum=-1;
 }
 
 TreeItem::~TreeItem()
@@ -17,6 +21,12 @@
 void TreeItem::appendChild(TreeItem *item)
 {
     childItems.append(item);
+	if (item->type == Branch)
+	{
+		if (branchCount==0)
+			branchOffset=childItems.count()-1;
+		branchCount++;
+	}
 }
 
 void TreeItem::removeChild(int row)
@@ -99,6 +109,50 @@
 	}
 }
 
+TreeItem* TreeItem::getChildNum(const int &n)
+{
+	if (n>=0 && n<childItems.count() )
+		return childItems.at(n);
+	else
+		return NULL;
+}
+
+TreeItem* TreeItem::getFirstBranch()
+{
+	if (branchCount>0)
+		return getBranchNum (branchOffset);
+	else
+		return NULL;
+}
+
+TreeItem* TreeItem::getLastBranch()
+{
+	if (branchCount>0)
+		return getBranchNum (branchOffset + branchCount-1);
+	else
+		return NULL;
+}
+
+
+TreeItem* TreeItem::getBranchNum(const int &n)
+{
+	if (branchCount>0)
+		return getChildNum (branchOffset + n);
+	else
+		return NULL;
+}
+
+void TreeItem::setLastSelectedBranch()
+{
+	if (parentItem)
+		parentItem->lastSelectedBranchNum=parentItem->childItems.indexOf(this);
+}
+
+TreeItem* TreeItem::getLastSelectedBranch()
+{
+	return getBranchNum (lastSelectedBranchNum);
+}
+
 LinkableMapObj* TreeItem::getLMO()	// FIXME VM should be unnecessary in the end
 {
 	return lmo;