Fix: Improve code folding functionality and gutter rendering

- Updated folding actions and engine for more consistent behavior.
- Added helper function `is_fold_hidden()` to check fold visibility state.
- Improved gutter renderer to handle collapsible code blocks more reliably.
- Refined tag handling for invisible folds to prevent desync issues.
- Removed code fold Fix related entry in `TODO.md`.

TODO.md

@@ -12,7 +12,10 @@ ___
 
 ___
 ### Fix
+- Fix <Ctrl\>z in multi-insert mode being funky. Insure updates happen on block level.
+       I.E, maybe push updates to queue to insure block undo/redo?
+- Fix multi-insert not acting properly with  -  in word.
+       I.E leader desync on <Ctrl\>left/right
 - Fix on lsp client unload to close files lsp side and unload server endpoint
-- Fix Collapsable code blocks icon desync on new/old lines or text cut/pasted
 
 ___

plugins/code/ui/code_fold/folding_actions.py

@@ -20,3 +20,5 @@ def expand_range(view, fold):
     end    = buffer.get_iter_at_line(fold["end_line"]   + 1)
 
     buffer.remove_tag_by_name("invisible", start, end)
+
+

plugins/code/ui/code_fold/folding_engine.py

@@ -7,12 +7,7 @@ from .fold_types import FOLD_NODES
 
 
 
-def get_folding_ranges(lang_name: str, ast):
-    root       = ast.root_node
-    fold_types = FOLD_NODES.get(lang_name, set())
-    ranges     = []
-
-    def visit(node):
+def visit_node(fold_types, node, ranges):
     if node.type in fold_types:
         start_line = node.start_point[0]
         end_line   = node.end_point[0]
@@ -25,7 +20,13 @@ def get_folding_ranges(lang_name: str, ast):
             })
 
     for child in node.children:
-            visit(child)
+        visit_node(fold_types, child, ranges)
 
-    visit(root)
+def get_folding_ranges(lang_name: str, ast):
+    root       = ast.root_node
+    fold_types = FOLD_NODES.get(lang_name, set())
+    ranges     = []
+
+    visit_node(fold_types, root, ranges)
     return ranges
+

plugins/code/ui/code_fold/gutter_renderer.py

@@ -16,10 +16,6 @@ from .folding_actions import collapse_range, expand_range
 def handle_collapse(view, fold):
     collapse_range(view, fold)
 
-    for inner in view.fold_starts:
-        if fold["start_line"] < inner["start_line"] <= fold["end_line"]:
-            view.fold_states[inner["id"]] = False
-
 def handle_expand(view, fold):
     expand_range(view, fold)
 
@@ -29,6 +25,11 @@ def handle_block_toggle(collapsed, view, fold):
     else:
         handle_expand(view, fold)
 
+def is_fold_hidden(buffer, fold):
+    iter_ = buffer.get_iter_at_line(fold["start_line"] + 1)
+    tags = iter_.get_tags()
+    return any(tag.get_property("invisible") for tag in tags)
+
 
 def on_query_data(renderer, start_iter, end_iter, state, view):
     line = start_iter.get_line()
@@ -37,8 +38,11 @@ def on_query_data(renderer, start_iter, end_iter, state, view):
         renderer.set_text("", -1)
         return
 
-    fold      = next((f for f in view.fold_starts if f["start_line"] == line), None)
-    collapsed = fold and view.fold_states.get(fold["id"], False)
+    fold = next(
+        (f for f in view.fold_starts if f["start_line"] == line), None
+    )
+
+    collapsed = fold and is_fold_hidden(view.get_buffer(), fold)
 
     renderer.set_text("▶" if collapsed else "▼", -1)
 
@@ -59,9 +63,7 @@ def on_click(view, event, renderer):
     for fold in view.fold_starts:
         if not fold["start_line"] == line: continue
 
-        collapsed = view.fold_states.get(fold["id"], False)
-        view.fold_states[fold["id"]] = not collapsed
-
+        collapsed = is_fold_hidden(view.get_buffer(), fold)
         handle_block_toggle(collapsed, view, fold)
 
         renderer.queue_draw()
@@ -74,13 +76,8 @@ def setup_gutter(view):
     gutter = view.get_gutter(Gtk.TextWindowType.LEFT)
     buffer = view.get_buffer()
 
-    if not buffer.get_tag_table().lookup("invisible"):
-        tag = buffer.create_tag("invisible")
-        tag.set_property("invisible", True)
-
     view.fold_starts    = []
     view.fold_start_set = set()
-    view.fold_states    = {}
 
     renderer = GtkSource.GutterRendererText()
     renderer.set_size(12)

plugins/code/ui/code_fold/plugin.py

@@ -13,6 +13,7 @@ from libs.event_factory import Event_Factory, Code_Event_Types
 from plugins.plugin_types import PluginCode
 
 from .fold_types import FOLD_NODES
+from .folding_actions import collapse_range
 from .folding_engine import get_folding_ranges
 from .gutter_renderer import setup_gutter
 
@@ -34,6 +35,11 @@ class Plugin(PluginCode):
             if file.ftype not in FOLD_NODES: return
             if not hasattr(file, "ast"): return
 
+            buffer = file.buffer
+            if not buffer.get_tag_table().lookup("invisible"):
+                tag = buffer.create_tag("invisible")
+                tag.set_property("invisible", True)
+
             self.update_gutter(file, self.view)
         elif isinstance(event, Code_Event_Types.TextChangedEvent):
             if event.file.ftype not in FOLD_NODES: return
@@ -78,21 +84,7 @@ class Plugin(PluginCode):
         view.fold_update_source = GLib.timeout_add(delay, callback)
 
     def update_gutter(self, file, view):
-        old_states = getattr(view, "fold_states", {})
-
         view.fold_starts    = get_folding_ranges(file.ftype, file.ast)
         view.fold_start_set = {
             fold["start_line"] for fold in view.fold_starts
         }
-
-        buffer = view.get_buffer()
-        if not buffer.get_tag_table().lookup("invisible"):
-            tag = buffer.create_tag("invisible")
-            tag.set_property("invisible", True)
-
-        new_states = {}
-        for fold in view.fold_starts:
-            if not fold["id"] in old_states: continue
-            new_states[fold["id"]] = old_states[fold["id"]]
-
-        view.fold_states = new_states