New textbox::getline returning an optional<string>

source/gui/widgets/textbox.cpp

@@ -377,6 +377,27 @@ namespace drawerbase {
 			return false;
 		}
 
+		std::optional<std::string> textbox::getline(std::size_t pos) const
+		{
+			auto result = std::string{};
+			if ( getline(pos, result) )
+			{
+				return { std::move(result) };
+			}
+			return {};
+		}
+
+		std::optional<std::string> textbox::getline(std::size_t line_index, std::size_t offset) const
+		{
+			auto result = std::string{};
+			if ( getline(line_index, offset, result) )
+			{
+				return { std::move(result) };
+			}
+			return {};
+		}
+
+
 		/// Gets the caret position
 		bool textbox::caret_pos(point& pos, bool text_coordinate) const
 		{