fix pyi

reflex/components/component.py

@@ -38,6 +38,7 @@ from reflex.constants import (
 )
 from reflex.constants.compiler import SpecialAttributes
 from reflex.event import (
+    EventCallback,
     EventChain,
     EventChainVar,
     EventHandler,
@@ -1126,6 +1127,8 @@ class Component(BaseComponent, ABC):
         for trigger in self.event_triggers.values():
             if isinstance(trigger, EventChain):
                 for event in trigger.events:
+                    if isinstance(event, EventCallback):
+                        continue
                     if isinstance(event, EventSpec):
                         if event.handler.state_full_name:
                             return True

reflex/event.py

@@ -16,6 +16,7 @@ from typing import (
     Generic,
     List,
     Optional,
+    Sequence,
     Tuple,
     Type,
     TypeVar,
@@ -389,7 +390,9 @@ class CallableEventSpec(EventSpec):
 class EventChain(EventActionsMixin):
     """Container for a chain of events that will be executed in order."""
 
-    events: List[Union[EventSpec, EventVar]] = dataclasses.field(default_factory=list)
+    events: Sequence[Union[EventSpec, EventVar, EventCallback]] = dataclasses.field(
+        default_factory=list
+    )
 
     args_spec: Optional[Callable] = dataclasses.field(default=None)
 
@@ -1468,6 +1471,24 @@ if sys.version_info >= (3, 10):
             """
             self.func = func
 
+        @property
+        def prevent_default(self):
+            """Prevent default behavior.
+
+            Returns:
+                The event callback with prevent default behavior.
+            """
+            return self
+
+        @property
+        def stop_propagation(self):
+            """Stop event propagation.
+
+            Returns:
+                The event callback with stop propagation behavior.
+            """
+            return self
+
         @overload
         def __call__(
             self: EventCallback[Concatenate[V, Q], T], value: V | Var[V]