fix upload argspec being missing (#4335)

reflex/components/core/upload.py

@@ -5,6 +5,7 @@
 from pathlib import Path
 from typing import Any, Callable, ClassVar, Dict, List, Optional, Tuple
 
+from reflex.components.base.fragment import Fragment
 from reflex.components.component import (
     Component,
     ComponentNamespace,
@@ -181,6 +182,13 @@ class UploadFilesProvider(Component):
     tag = "UploadFilesProvider"
 
 
+class GhostUpload(Fragment):
+    """A ghost upload component."""
+
+    # Fired when files are dropped.
+    on_drop: EventHandler[_on_drop_spec]
+
+
 class Upload(MemoizationLeaf):
     """A file upload component."""
 
@@ -276,8 +284,8 @@ def create(cls, *children, **props) -> Component:
         root_props_unique_name = get_unique_variable_name()
 
         event_var, callback_str = StatefulComponent._get_memoized_event_triggers(
-            Box.create(on_click=upload_props["on_drop"])  # type: ignore
-        )["on_click"]
+            GhostUpload.create(on_drop=upload_props["on_drop"])
+        )["on_drop"]
 
         upload_props["on_drop"] = event_var
 

reflex/components/core/upload.pyi

@@ -6,6 +6,7 @@
 from pathlib import Path
 from typing import Any, ClassVar, Dict, List, Optional, Union, overload
 
+from reflex.components.base.fragment import Fragment
 from reflex.components.component import Component, ComponentNamespace, MemoizationLeaf
 from reflex.constants import Dirs
 from reflex.event import BASE_STATE, CallableEventSpec, EventSpec, EventType
@@ -84,6 +85,56 @@ class UploadFilesProvider(Component):
         """
         ...
 
+class GhostUpload(Fragment):
+    @overload
+    @classmethod
+    def create(  # type: ignore
+        cls,
+        *children,
+        style: Optional[Style] = None,
+        key: Optional[Any] = None,
+        id: Optional[Any] = None,
+        class_name: Optional[Any] = None,
+        autofocus: Optional[bool] = None,
+        custom_attrs: Optional[Dict[str, Union[Var, Any]]] = None,
+        on_blur: Optional[EventType[[], BASE_STATE]] = None,
+        on_click: Optional[EventType[[], BASE_STATE]] = None,
+        on_context_menu: Optional[EventType[[], BASE_STATE]] = None,
+        on_double_click: Optional[EventType[[], BASE_STATE]] = None,
+        on_drop: Optional[
+            Union[EventType[[], BASE_STATE], EventType[[Any], BASE_STATE]]
+        ] = None,
+        on_focus: Optional[EventType[[], BASE_STATE]] = None,
+        on_mount: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_down: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_enter: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_leave: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_move: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_out: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_over: Optional[EventType[[], BASE_STATE]] = None,
+        on_mouse_up: Optional[EventType[[], BASE_STATE]] = None,
+        on_scroll: Optional[EventType[[], BASE_STATE]] = None,
+        on_unmount: Optional[EventType[[], BASE_STATE]] = None,
+        **props,
+    ) -> "GhostUpload":
+        """Create the component.
+
+        Args:
+            *children: The children of the component.
+            on_drop: Fired when files are dropped.
+            style: The style of the component.
+            key: A unique key for the component.
+            id: The id for the component.
+            class_name: The class name for the component.
+            autofocus: Whether the component should take the focus once the page is loaded
+            custom_attrs: custom attribute
+            **props: The props of the component.
+
+        Returns:
+            The component.
+        """
+        ...
+
 class Upload(MemoizationLeaf):
     is_used: ClassVar[bool] = False