added dimensions

Signed-off-by: Andrew Grosser <dioptre@gmail.com>

bindings/python/src/lib.rs

@@ -60,6 +60,17 @@ impl PyUserModel {
             .map_err(|e| WorkbookError::new_err(e.to_string()))
     }
 
+    /// Gets the dimensions of a worksheet, returning the bounds of all non-empty cells.
+    /// Returns a tuple of (min_row, max_row, min_column, max_column).
+    /// For an empty sheet, returns (1, 1, 1, 1).
+    pub fn get_sheet_dimensions(&self, sheet: u32) -> PyResult<(i32, i32, i32, i32)> {
+        let model = self.model.get_model();
+        let worksheet = model.workbook.worksheet(sheet)
+            .map_err(|e| WorkbookError::new_err(e.to_string()))?;
+        let dimension = worksheet.dimension();
+        Ok((dimension.min_row, dimension.max_row, dimension.min_column, dimension.max_column))
+    }
+
     pub fn to_bytes(&self) -> PyResult<Vec<u8>> {
         let bytes = self.model.to_bytes();
         Ok(bytes)
@@ -283,6 +294,16 @@ impl PyModel {
             .map_err(|e| WorkbookError::new_err(e.to_string()))
     }
 
+    /// Gets the dimensions of a worksheet, returning the bounds of all non-empty cells.
+    /// Returns a tuple of (min_row, max_row, min_column, max_column).
+    /// For an empty sheet, returns (1, 1, 1, 1).
+    pub fn get_sheet_dimensions(&self, sheet: u32) -> PyResult<(i32, i32, i32, i32)> {
+        let worksheet = self.model.workbook.worksheet(sheet)
+            .map_err(|e| WorkbookError::new_err(e.to_string()))?;
+        let dimension = worksheet.dimension();
+        Ok((dimension.min_row, dimension.max_row, dimension.min_column, dimension.max_column))
+    }
+
     #[allow(clippy::panic)]
     pub fn test_panic(&self) -> PyResult<()> {
         panic!("This function panics for testing panic handling");

bindings/python/tests/test_create.py

@@ -27,3 +27,31 @@ def test_simple_user():
     model2.apply_external_diffs(diffs)
     assert model2.get_formatted_cell_value(0, 1, 1) == "3"
     assert model2.get_formatted_cell_value(0, 1, 2) == "6"
+
+
+def test_sheet_dimensions():
+    # Test with empty sheet
+    model = ic.create("model", "en", "UTC")
+    min_row, max_row, min_col, max_col = model.get_sheet_dimensions(0)
+    assert (min_row, max_row, min_col, max_col) == (1, 1, 1, 1)
+    
+    # Add some cells
+    model.set_user_input(0, 3, 5, "Hello")
+    model.set_user_input(0, 10, 8, "World")
+    model.evaluate()
+    
+    # Check dimensions - should span from (3,5) to (10,8)
+    min_row, max_row, min_col, max_col = model.get_sheet_dimensions(0)
+    assert (min_row, max_row, min_col, max_col) == (3, 10, 5, 8)
+
+
+def test_sheet_dimensions_user_model():
+    # Test with user model API as well
+    model = ic.create_user_model("model", "en", "UTC")
+    
+    # Add a single cell
+    model.set_user_input(0, 2, 3, "Test")
+    
+    # Check dimensions
+    min_row, max_row, min_col, max_col = model.get_sheet_dimensions(0)
+    assert (min_row, max_row, min_col, max_col) == (2, 2, 3, 3)