UPDATE: Introducing TironCalc, or Tiron for friends

base/src/user_model.rs

@@ -275,7 +275,10 @@ fn vertical(value: &str) -> Result<VerticalAlignment, String> {
 /// # }
 /// ```
 pub struct UserModel {
-    model: Model,
+    /// The underlying model
+    /// See also:
+    /// * [Model]
+    pub model: Model,
     history: History,
     send_queue: Vec<QueueDiffs>,
     pause_evaluation: bool,
@@ -628,7 +631,9 @@ impl UserModel {
     pub fn insert_row(&mut self, sheet: u32, row: i32) -> Result<(), String> {
         let diff_list = vec![Diff::InsertRow { sheet, row }];
         self.push_diff_list(diff_list);
-        self.model.insert_rows(sheet, row, 1)
+        self.model.insert_rows(sheet, row, 1)?;
+        self.model.evaluate();
+        Ok(())
     }
 
     /// Deletes a row
@@ -655,7 +660,9 @@ impl UserModel {
             old_data,
         }];
         self.push_diff_list(diff_list);
-        self.model.delete_rows(sheet, row, 1)
+        self.model.delete_rows(sheet, row, 1)?;
+        self.model.evaluate();
+        Ok(())
     }
 
     /// Inserts a column
@@ -665,7 +672,9 @@ impl UserModel {
     pub fn insert_column(&mut self, sheet: u32, column: i32) -> Result<(), String> {
         let diff_list = vec![Diff::InsertColumn { sheet, column }];
         self.push_diff_list(diff_list);
-        self.model.insert_columns(sheet, column, 1)
+        self.model.insert_columns(sheet, column, 1)?;
+        self.model.evaluate();
+        Ok(())
     }
 
     /// Deletes a column
@@ -710,7 +719,9 @@ impl UserModel {
             }),
         }];
         self.push_diff_list(diff_list);
-        self.model.delete_columns(sheet, column, 1)
+        self.model.delete_columns(sheet, column, 1)?;
+        self.model.evaluate();
+        Ok(())
     }
 
     /// Sets the width of a column