From 153faf9c13b5faed44290b2488e62d36c81eaf48 Mon Sep 17 00:00:00 2001
From: Michael Sippel <micha@fragmental.art>
Date: Sat, 11 Nov 2023 18:00:47 +0100
Subject: [PATCH] add get_subcursor()

---
 nested/src/tree/cursor.rs   | 11 +++++++++++
 nested/src/tree/nav.rs      |  1 +
 nested/src/tree/node.rs     |  9 +++------
 nested/src/tree/treetype.rs |  4 ++--
 4 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/nested/src/tree/cursor.rs b/nested/src/tree/cursor.rs
index 934be6d..9caa659 100644
--- a/nested/src/tree/cursor.rs
+++ b/nested/src/tree/cursor.rs
@@ -24,6 +24,17 @@ impl TreeCursor {
             tree_addr: vec![],
         }
     }
+
+    pub fn get_subcursor(&self, depth: usize) -> TreeCursor {
+        TreeCursor {
+            leaf_mode: self.leaf_mode,
+            tree_addr: if depth < self.tree_addr.len() {
+                self.tree_addr[ depth.. ].iter().cloned().collect()
+            } else {
+                vec![]
+            }
+        }
+    }
 }
 
 impl Default for TreeCursor {
diff --git a/nested/src/tree/nav.rs b/nested/src/tree/nav.rs
index 488e26b..67acee3 100644
--- a/nested/src/tree/nav.rs
+++ b/nested/src/tree/nav.rs
@@ -181,3 +181,4 @@ pub trait TreeNav {
     }
 }
 
+
diff --git a/nested/src/tree/node.rs b/nested/src/tree/node.rs
index c73da7c..75fdf3e 100644
--- a/nested/src/tree/node.rs
+++ b/nested/src/tree/node.rs
@@ -32,18 +32,15 @@ struct NestedNodeEdit {
     /// abstract editor
     pub editor: SingletonBuffer<
                     Option< Arc<dyn Any + Send + Sync> >
->,
+    >,
 
-    pub input_buf:: VecBuffer< NestedNode >,
-    pub output_buf: VecBuffer< NestedNode >,
+    pub spillbuf: VecBuffer< NestedNode >,
 
     /// commander & navigation
     pub cmd: SingletonBuffer<
                  Option< Arc<RwLock<dyn ObjCommander + Send + Sync>> >
              >,
-    pub close_char: SingletonBuffer<
-                        Option< char >
-            >,
+    pub close_char: SingletonBuffer< Option< char > >,
 
     // could be replaced by cmd when TreeNav -CmdObjects are used
     pub tree_nav: SingletonBuffer<
diff --git a/nested/src/tree/treetype.rs b/nested/src/tree/treetype.rs
index 9fd9ae3..07f0dce 100644
--- a/nested/src/tree/treetype.rs
+++ b/nested/src/tree/treetype.rs
@@ -7,8 +7,8 @@ use {
 };
 
 pub trait TreeType {
-    fn get_type(&self, _addr: &TreeAddr) -> TypeTerm {
-        TypeTerm::new(TypeID::Var(0))
+    fn get_type(&self, addr: &TreeAddr) -> Vec<TypeTerm> {
+        vec![]
     }
 }