X-Git-Url: https://git.llucax.com/z.facultad/75.52/treemulator.git/blobdiff_plain/de3b0cb3cb22673c55c267a6cfd0428df0a084f8..aa158a0284c1bc32a979d50275aa1b24438d46ef:/viewer/view_btree.cpp

diff --git a/viewer/view_btree.cpp b/viewer/view_btree.cpp
index 6a1fd16..eb2e067 100644
--- a/viewer/view_btree.cpp
+++ b/viewer/view_btree.cpp
@@ -16,10 +16,27 @@ ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename, uint block_si
 	byte_to_pixels  = node_width/block_size;
 
 	last_selected = NULL;
+	last_visited = 0;
+}
+
+void ViewBTree::GoBack ()
+{
+	uint l = back.top ();
+	back.pop ();
+
+	Clear ();
+	AddNode (l, 1);
 }
 
 void ViewBTree::AddNode (uint num, uint padre)
 {
+	/* Hack de ultima hora :P */
+	if (padre == 0)
+		/* evito quedar en circulo :D */
+		back.push (last_visited);
+
+	last_visited = num;
+
 	uchar *node = ReadBlock (num);
 
 	BTreeNodeHeader node_h;
@@ -45,7 +62,7 @@ void ViewBTree::on_item_activated (BTreeData *data, uint num, ViewNode *vnode)
 	delete vnode;
 
 	std::cout << next << std::endl;
-	AddNode (next, num);
+	AddNode (next, 0);
 }
 
 void ViewBTree::on_item_selected (BTreeData *data, uint num, ViewNode *vnode)