expose selection_start

src/textarea.rs

@@ -2003,6 +2003,26 @@ impl<'a> TextArea<'a> {
         self.cursor
     }
 
+    /// Get the current selection start position. 0-base character-wise (row, col) selection start position.
+    /// ```
+    /// use tui_textarea::TextArea;
+    ///
+    /// let mut textarea = TextArea::default();
+    /// assert_eq!(textarea.selection_start(), None);
+
+    /// textarea.insert_char('a');
+    /// textarea.insert_newline();
+    /// textarea.insert_char('b');
+    ///
+    /// textarea.start_selection();
+    /// assert_eq!(textarea.selection_start(), Some((0, 0)));
+    /// textarea.move_cursor(CursorMove::Forward);
+    /// assert_eq!(textarea.selection_start(), Some((0, 0)));
+    /// ```
+    pub fn selection_start(&self) -> Option<(usize, usize)> {
+        self.selection_start
+    }
+
     /// Set text alignment. When [`Alignment::Center`] or [`Alignment::Right`] is set, line number is automatically
     /// disabled because those alignments don't work well with line numbers.
     /// ```