Fix typos, enhance grid handling, and improve checkbox functionality in Section Box Navigator. Added error handling for grid types and updated UI to refresh levels and grids based on checkbox state.

Author: jmcouffin

extensions/pyRevitTools.extension/pyRevit.tab/Modify.panel/3D.pulldown/Section Box Navigator.pushbutton/SectionBoxNavigator.xaml

@@ -237,7 +237,8 @@
                 <CheckBox x:Name="chkAutoupdate" Content="Autoupdate UI on Events" 
                         Margin="5" IsChecked="True"/>
                 <CheckBox x:Name="chkIncludeLinks" Content="Include Linked Levels and Grids" 
-                        Margin="5" IsChecked="False"/>
+                        Margin="5" IsChecked="False"
+                        Checked="chkIncludeLinks_checked" Unchecked="chkIncludeLinks_checked"/>
             </StackPanel>
         </GroupBox>
 

extensions/pyRevitTools.extension/pyRevit.tab/Modify.panel/3D.pulldown/Section Box Navigator.pushbutton/script.py

@@ -114,7 +114,7 @@ def create_adjusted_box(
         max_point.Z + max_z,
     )
 
-    # Validate dimesions
+    # Validate dimensions
     if new_max.X <= new_min.X or new_max.Y <= new_min.Y or new_max.Z <= new_min.Z:
         return None
 
@@ -1120,6 +1120,12 @@ def btn_refresh_click(self, sender, e):
         self.all_grids = get_all_grids(doc, self.chkIncludeLinks.IsChecked)
         self.update_info()
 
+    def chkIncludeLinks_checked(self, sender, e):
+        """Refresh levels and grids when checkbox is toggled."""
+        self.all_levels = get_all_levels(doc, self.chkIncludeLinks.IsChecked)
+        self.all_grids = get_all_grids(doc, self.chkIncludeLinks.IsChecked)
+        self.update_info()
+
     # Grid Navigation Button Handlers
 
     def btn_grid_west_out_click(self, sender, e):
@@ -1242,7 +1248,10 @@ def form_closed(self, sender, args):
         if not isinstance(active_view, DB.View3D) or not active_view.IsSectionBoxActive:
             try:
                 view_boxes = script.load_data(DATAFILENAME)
-                bbox_data = view_boxes[get_elementid_value(active_view.Id)]
+                view_id_value = get_elementid_value(active_view.Id)
+                if view_id_value not in view_boxes:
+                    raise KeyError("View not found in stored boxes")
+                bbox_data = view_boxes[view_id_value]
                 restored_bbox = revit.deserialize(bbox_data)
 
                 # Ask user if they want to restore

extensions/pyRevitTools.extension/pyRevit.tab/Modify.panel/3D.pulldown/Section Box Navigator.pushbutton/sectionbox_navigation.py

@@ -143,8 +143,18 @@ def find_next_grid_in_direction(start_point, direction_vector, grids, tolerance)
     ray = DB.Line.CreateUnbound(start_point_flat, direction_vector)
 
     for grid in grids:
-        curve = grid.Curve
-        if not isinstance(curve, DB.Line):
+        try:
+            # Handle both regular Grid and LinkedGrid objects / Exception on multi segment grids
+            if hasattr(grid, 'Curve'):
+                curve = grid.Curve
+            elif hasattr(grid, 'Element'):
+                curve = grid.Element.Curve
+            else:
+                curve = grid.Curve  # Regular DB.Grid
+                
+            if not curve or not isinstance(curve, DB.Line):
+                continue
+        except (AttributeError, Exception):
             continue
 
         # Flatten grid line to XY