return getFirstValidTreeInfoEntry(default_node);
}
-TreeInfo *getFirstValidTreeInfoEntry(TreeInfo *node)
+static TreeInfo *getValidTreeInfoEntryExt(TreeInfo *node, boolean get_next_node)
{
if (node == NULL)
return NULL;
- if (node->node_group) // enter level group (step down into tree)
+ if (node->node_group) // enter node group (step down into tree)
return getFirstValidTreeInfoEntry(node->node_group);
- if (node->parent_link) // skip start entry of level group
- {
- if (node->next) // get first real level series entry
- return getFirstValidTreeInfoEntry(node->next);
- else // leave empty level group and go on
- return getFirstValidTreeInfoEntry(node->node_parent->next);
- }
+ if (node->parent_link) // skip first node (back link) of node group
+ get_next_node = TRUE;
- // this seems to be a regular level series
- return node;
+ if (!get_next_node) // get current regular tree node
+ return node;
+
+ // get next regular tree node, or step up until one is found
+ while (node->next == NULL && node->node_parent != NULL)
+ node = node->node_parent;
+
+ return getFirstValidTreeInfoEntry(node->next);
+}
+
+TreeInfo *getFirstValidTreeInfoEntry(TreeInfo *node)
+{
+ return getValidTreeInfoEntryExt(node, FALSE);
+}
+
+TreeInfo *getNextValidTreeInfoEntry(TreeInfo *node)
+{
+ return getValidTreeInfoEntryExt(node, TRUE);
}
TreeInfo *getTreeInfoFirstGroupEntry(TreeInfo *node)