X-Git-Url: https://git.llucax.com/z.facultad/75.52/treemulator.git/blobdiff_plain/8c5f74464a5708bc7f7013f28a408af762344803..aa158a0284c1bc32a979d50275aa1b24438d46ef:/viewer/view_btree.cpp

diff --git a/viewer/view_btree.cpp b/viewer/view_btree.cpp
index 353fd2b..eb2e067 100644
--- a/viewer/view_btree.cpp
+++ b/viewer/view_btree.cpp
@@ -7,8 +7,8 @@ double ViewBTree::byte_to_pixels = 0;
 double ViewBTree::node_width = 0;
 double ViewBTree::node_height = 0;
 
-ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename, uint block_size, int type):Canvas::Group (*parent, 0, 0),
-	BTree (filename, block_size, BTree::TYPE_IDENTIFICACION, type)
+ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename, uint block_size, int tree_type, int type):Canvas::Group (*parent, 0, 0),
+	BTree (filename, block_size, tree_type, type)
 {
 	/* Cada bytes lo hago de 5 units de ancho */
 	node_width = 4 * block_size;
@@ -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)