Refactor component attributes and add is_composition flag

src/backend/langflow/interface/custom/custom_component/component.py

@@ -20,7 +20,9 @@ class ComponentFunctionEntrypointNameNullError(HTTPException):
 
 class Component:
     ERROR_CODE_NULL: ClassVar[str] = "Python code must be provided."
-    ERROR_FUNCTION_ENTRYPOINT_NAME_NULL: ClassVar[str] = "The name of the entrypoint function must be provided."
+    ERROR_FUNCTION_ENTRYPOINT_NAME_NULL: ClassVar[str] = (
+        "The name of the entrypoint function must be provided."
+    )
 
     code: Optional[str] = None
     _function_entrypoint_name: str = "build"
@@ -67,6 +69,10 @@ class Component:
 
         return str(value) if value else ""
 
+    def getattr_return_bool(self, value):
+        if isinstance(value, bool):
+            return value
+
     def build_template_config(self) -> dict:
         if not self.code:
             return {}
@@ -80,6 +86,7 @@ class Component:
             "beta": self.getattr_return_str,
             "documentation": self.getattr_return_str,
             "icon": self.validate_icon,
+            "is_composition": self.getattr_return_bool,
         }
 
         for attribute, func in attributes_func_mapping.items():

src/backend/langflow/interface/custom/custom_component/custom_component.py

@@ -35,6 +35,9 @@ class CustomComponent(Component):
     """The field configuration of the component. Defaults to an empty dictionary."""
     field_order: Optional[List[str]] = None
     """The field order of the component. Defaults to an empty list."""
+    is_composition: Optional[bool] = None
+    """Whether the component is used for composition.
+    This affects the style of the edge connecting the component to the next component. Defaults to None."""
     code_class_base_inheritance: ClassVar[str] = "CustomComponent"
     function_entrypoint_name: ClassVar[str] = "build"
     function: Optional[Callable] = None

src/backend/langflow/interface/custom/utils.py

@@ -270,6 +270,7 @@ def sanitize_template_config(template_config):
         "documentation",
         "output_types",
         "icon",
+        "is_composition",
     }
     for key in template_config.copy():
         if key not in attributes: