tree_nav :3

human.ml

@@ -2345,7 +2345,9 @@ module Nottui_lwt = struct
        (fun () -> Term.release term) *)
 end
 
-module Nottui_widgets = struct
+module Widgets = struct
+  (* Majority of this was adapted from Nottui_widgets *)
+
   open Nottui
 
   let string ?(attr = A.empty) str = Ui.atom (I.string ~attr str)
@@ -2941,6 +2943,55 @@ module Nottui_widgets = struct
         Option.iter (fun (f, _) -> Focus.request f)
         @@ Lwd_table.get cursor)
       (Lwd.peek cursor);
+
+    (* Lwd.observe ~on_invalidate:(fun _ ->
+         Lwd.set cursorview (Lwd.quick_sample (root ()))); *)
+    let cursorview =
+      Lwd.var @@ Lwd.pure @@ string "initializing..."
+    in
+    let cv, push_cv = Lwt_stream.create () in
+    let cvroot =
+      Lwd.observe ~on_invalidate:(fun _ ->
+          Log.info (fun m ->
+              m
+                "tree_nav cursorviewroot on_invalidate push_cv \
+                 triggered??");
+          push_cv (Some ()))
+      @@ Lwd.map (Lwd.get cursor) ~f:(function
+           | Some cursor_row -> (
+               match Lwd_table.get cursor_row with
+               | Some (_focus, (step, tree)) -> (
+                   Nav.S.Tree.kind tree [] >>= function
+                   | Some `Node ->
+                       Lwt.return @@ Lwd.pure @@ string "Sub-node??"
+                   | Some `Contents -> (
+                       Nav.S.Tree.find_all tree [] >>= function
+                       | Some (contents, _metadata) ->
+                           Lwt.return
+                             (edit_area
+                                ~table:(edit_area_of_string contents)
+                                ())
+                       | None ->
+                           Lwt.return @@ Lwd.pure
+                           @@ string ("could not find path: " ^ step))
+                   | None -> Lwt.return @@ Lwd.pure @@ string step)
+               | None ->
+                   Lwt.return @@ Lwd.pure
+                   @@ string "cursor table row doesn't exist")
+           | None ->
+               Lwt.return @@ Lwd.pure @@ string "cursor doesn't exist")
+    in
+    Lwt.async (fun () ->
+        Lwt_stream.iter_s
+          (fun _ ->
+            Lwd.quick_sample cvroot >>= fun cursorview'' ->
+            Log.info (fun m ->
+                m
+                  "tree_nav cursorviewroot on_invalidate Lwt.async \
+                   (Lwd.set cursorview) triggered??");
+            Lwt.return (Lwd.set cursorview cursorview''))
+          cv);
+    push_cv (Some ());
     Lwt.return
       (Lwd_table.map_reduce
          (fun _ (f, (s, _)) ->
@@ -2976,7 +3027,11 @@ module Nottui_widgets = struct
                  | `Backspace, [] -> `Unhandled
                  | `Uchar u, [ `Ctrl ] when eq_uc_c u 'k' -> `Handled
                  | _ -> `Unhandled))
-           (Focus.status focus))
+           (Focus.status focus)
+      |> Lwd.map2
+           ~f:(fun cursorview' tree_view ->
+             Ui.join_x tree_view cursorview')
+           (Lwd.join @@ Lwd.get cursorview))
 
   (** Tab view, where exactly one element of [l] is shown at a time. *)
   let tabs (tabs : (string * (unit -> Ui.t Lwd.t)) list) : Ui.t Lwd.t