Fixed double Panel double instantiation

src/myfasthtml/controls/InstancesDebugger.py

@@ -4,7 +4,7 @@ from fasthtml.components import Div
 
 from myfasthtml.controls.HierarchicalCanvasGraph import HierarchicalCanvasGraph, HierarchicalCanvasGraphConf
 from myfasthtml.controls.Panel import Panel
-from myfasthtml.controls.Properties import Properties
+from myfasthtml.controls.Properties import Properties, PropertiesConf
 from myfasthtml.core.commands import Command
 from myfasthtml.core.instances import SingleInstance, UniqueInstance, MultipleInstance, InstancesManager
 
@@ -73,10 +73,11 @@ class InstancesDebugger(SingleInstance):
         "Commands": {"*": "commands"},
     }
     
-    return self._panel.set_right(Properties(self,
-                                            InstancesManager.get(session, instance_id),
-                                            properties_def,
-                                            _id="-properties"))
+    return self._panel.set_right(Properties(
+      self,
+      conf=PropertiesConf(obj=InstancesManager.get(session, instance_id), groups=properties_def),
+      _id="-properties",
+    ))
   
   def _get_instance_kind(self, instance) -> str:
     """Determine the instance kind for visualization.

src/myfasthtml/controls/Panel.py

@@ -104,7 +104,7 @@ class Panel(MultipleInstance):
   the panel with appropriate HTML elements and JavaScript for interactivity.
   """
   
-  def __init__(self, parent, conf: Optional[PanelConf] = None, _id="-panel"):
+  def __init__(self, parent, conf: Optional[PanelConf] = None, _id=None):
     super().__init__(parent, _id=_id)
     self.conf = conf or PanelConf()
     self.commands = Commands(self)

src/myfasthtml/controls/Profiler.py

@@ -161,7 +161,7 @@ class Profiler(SingleInstance):
   
   def __init__(self, parent, _id=None):
     super().__init__(parent, _id=_id)
-    self._panel = Panel(self, conf=PanelConf(show_right_title=False, show_display_right=False))
+    self._panel = Panel(self, conf=PanelConf(show_right_title=False, show_display_right=False), _id="-panel")
     self._panel.set_side_visible("right", True)
     self._selected_id: str | None = None
     self._detail_view: str = "tree"
@@ -339,8 +339,7 @@ class Profiler(SingleInstance):
     kwargs_obj = SimpleNamespace(**trace.kwargs) if trace.kwargs else SimpleNamespace()
     kwargs_props = Properties(
       self,
-      obj=kwargs_obj,
-      groups={"kwargs": {"*": ""}},
+      conf=PropertiesConf(obj=kwargs_obj, groups={"kwargs": {"*": ""}}),
       _id="-detail-kwargs",
     )
 

src/myfasthtml/controls/Properties.py

@@ -24,22 +24,18 @@ class PropertiesConf:
 
 
 class Properties(MultipleInstance):
-  def __init__(self, parent, obj=None, groups: dict = None, conf: PropertiesConf = None, _id=None):
+  def __init__(self, parent, conf: PropertiesConf = None, _id=None):
     super().__init__(parent, _id=_id)
-    if conf is not None:
-      self.obj = conf.obj
-      self.groups = conf.groups
-      self._types = conf.types or {}
-    else:
-      self.obj = obj
-      self.groups = groups
-      self._types = {}
-    self.properties_by_group = self._create_properties_by_group()
+    self.conf = conf or PropertiesConf()
+    self._refresh()
 
-  def set_obj(self, obj, groups: dict = None):
-    self.obj = obj
-    self.groups = groups
-    self.properties_by_group = self._create_properties_by_group()
+  def set_conf(self, conf: PropertiesConf):
+    self.conf = conf
+    self._refresh()
+
+  def _refresh(self):
+    self._types = self.conf.types or {}
+    self._properties_by_group = self._create_properties_by_group()
 
   def _mk_group_content(self, properties: dict):
     return Div(
@@ -57,7 +53,7 @@ class Properties(MultipleInstance):
   def _mk_property_value(self, value):
     for t, renderer in self._types.items():
       if isinstance(value, t):
-        return renderer(value, self.obj)
+        return renderer(value, self.conf.obj)
 
     if isinstance(value, dict):
       return self._mk_group_content(value)
@@ -73,9 +69,9 @@ class Properties(MultipleInstance):
     """Render a group's content.
 
     When the group contains exactly one property whose type is registered in
-    ``_types``, the type renderer replaces the entire group content (not just
-    the value cell).  This lets custom renderers (e.g. span trees) fill the
-    full card width without a key/value row wrapper.
+    ``conf.types``, the type renderer replaces the entire group content (not
+    just the value cell).  This lets custom renderers (e.g. span trees) fill
+    the full card width without a key/value row wrapper.
 
     Otherwise, the standard key/value row layout is used.
 
@@ -90,7 +86,7 @@ class Properties(MultipleInstance):
       k, v = next(iter(properties.items()))
       for t, renderer in self._types.items():
         if isinstance(v, t):
-          return renderer(v, self.obj)
+          return renderer(v, self.conf.obj)
     return self._mk_group_content(properties)
 
   def render(self):
@@ -104,17 +100,17 @@ class Properties(MultipleInstance):
             ),
             cls="mf-properties-group-card"
           )
-          for group_name, proxy in self.properties_by_group.items()
+          for group_name, proxy in self._properties_by_group.items()
       ],
       id=self._id,
       cls="mf-properties"
     )
 
   def _create_properties_by_group(self):
-    if self.groups is None:
-      return {None: ProxyObject(self.obj, {"*": ""})}
+    if self.conf.groups is None:
+      return {None: ProxyObject(self.conf.obj, {"*": ""})}
 
-    return {k: ProxyObject(self.obj, v) for k, v in self.groups.items()}
+    return {k: ProxyObject(self.conf.obj, v) for k, v in self.conf.groups.items()}
 
   def __ft__(self):
     return self.render()

src/myfasthtml/core/instances.py

@@ -247,7 +247,7 @@ class InstancesManager:
     """
     key = (InstancesManager.get_session_id(session), instance.get_id())
     
-    if isinstance(instance, SingleInstance) and key in InstancesManager.instances:
+    if key in InstancesManager.instances and not isinstance(instance, UniqueInstance):
       raise DuplicateInstanceError(instance)
     
     InstancesManager.instances[key] = instance