Fixed when tab already exists + InstancesDebugger

src/myfasthtml/controls/InstancesDebugger.py

@@ -0,0 +1,26 @@
+from myfasthtml.controls.VisNetwork import VisNetwork
+from myfasthtml.controls.helpers import Ids
+from myfasthtml.core.instances import SingleInstance, InstancesManager
+from myfasthtml.core.network_utils import from_parent_child_list
+
+
+class InstancesDebugger(SingleInstance):
+  def __init__(self, session, parent, _id=None):
+    super().__init__(session, Ids.InstancesDebugger, parent)
+  
+  def render(self):
+    instances = self._get_instances()
+    nodes, edges = from_parent_child_list(instances,
+                                          id_getter=lambda x: x.get_id(),
+                                          label_getter=lambda x: x.get_prefix(),
+                                          parent_getter=lambda x: x.get_parent().get_id() if x.get_parent() else None
+                                          )
+    
+    vis_network = VisNetwork(self, nodes=nodes, edges=edges)
+    return vis_network
+  
+  def _get_instances(self):
+    return list(InstancesManager.instances.values())
+  
+  def __ft__(self):
+    return self.render()