Merge branch 'develop' into feature/Avaiga#1248-cover-json-data-node-…

…control-new

README.md

@@ -7,6 +7,52 @@
   </a>
 </div>
 
+<br>
+<div align="center">
+    <img 
+        src="https://img.shields.io/github/license/Avaiga/taipy?style=plastic&color=ff371a&labelColor=1f1f1f" 
+        alt="GitHub License" 
+        height="20px" 
+    />
+    <a target="_blank" href="https://github.com/Avaiga/taipy/releases">
+        <img 
+            alt="GitHub Release" 
+            height="20px" 
+            src="https://img.shields.io/github/v/release/Avaiga/taipy?display_name=release&style=plastic&color=ff371a&labelColor=1f1f1f"
+        ></a>
+</div>
+<br>
+<div align="center">
+   <img 
+      src="https://img.shields.io/badge/python-3.9%20%7C%203.10%20%7C%203.11%20%7C%203.12-ff371a?style=plastic&labelColor=1f1f1f" 
+        alt="Python version needed: 3.9" 
+    />
+
+</div>
+<br>
+
+<div align="center">
+    <a target="_blank" href="https://docs.taipy.io/en/latest/">
+        <img 
+            src="https://img.shields.io/badge/docs-ff371a?style=plastic&labelColor=1f1f1f&label=Explore" 
+            height="20px" 
+            alt="Explore the docs" 
+        ></a>
+       <a target="_blank" href="https://docs.taipy.io/en/latest/gallery/">
+        <img 
+            src="https://img.shields.io/badge/gallery-ff371a?style=plastic&labelColor=1f1f1f&label=Explore" 
+            height="20px" 
+            alt="Explore Gallery" 
+        ></a>
+    <a target="_blank" href="https://discord.com/invite/SJyz2VJGxV">
+        <img 
+            src="https://img.shields.io/discord/1125797687476887563?style=plastic&labelColor=1f1f1f&logo=discord&logoColor=ff371a&label=Discord&color=ff371a" 
+            height="20px" 
+            alt="Discord support" 
+        ></a>
+</div>
+<br>
+
 <h1 align="center">
     Build Python Data & AI web applications
 </h1>

taipy/gui/state.py

@@ -11,7 +11,7 @@
 
 import inspect
 import typing as t
-from abc import abstractmethod
+from abc import ABCMeta, abstractmethod
 from contextlib import nullcontext
 from operator import attrgetter
 from pathlib import Path
@@ -26,7 +26,7 @@
     from .gui import Gui
 
 
-class State(SimpleNamespace):
+class State(SimpleNamespace, metaclass=ABCMeta):
     """Accessor to the bound variables from callbacks.
 
     `State` is used when you need to access the value of variables
@@ -114,9 +114,7 @@ def refresh(self, name: str):
         val = attrgetter(name)(self)
         _attrsetter(self, name, val)
 
-    def _set_context(self, gui: "Gui") -> t.ContextManager[None]:
-        return nullcontext()
-
+    @abstractmethod
     def broadcast(self, name: str, value: t.Any):
         """Update a variable on all clients.
 
@@ -127,9 +125,7 @@ def broadcast(self, name: str, value: t.Any):
             name (str): The variable name to update.
             value (Any): The new variable value.
         """
-        with self._set_context(self._gui):
-            encoded_name = self._gui._bind_var(name)
-            self._gui._broadcast_all_clients(encoded_name, value)
+        raise NotImplementedError
 
     def __enter__(self):
         self._gui.__enter__()
@@ -196,6 +192,11 @@ def __filter_var_list(var_list: t.Iterable[str], excluded_attrs: t.Iterable[str]
     def get_gui(self) -> "Gui":
         return super().__getattribute__(_GuiState.__gui_attr)
 
+    def broadcast(self, name: str, value: t.Any):
+        with self._set_context(self._gui):
+            encoded_name = self._gui._bind_var(name)
+            self._gui._broadcast_all_clients(encoded_name, value)
+
     def __getattribute__(self, name: str) -> t.Any:
         if name == "__class__":
             return _GuiState

taipy/gui/state_support.py

@@ -0,0 +1,16 @@
+# Copyright 2021-2024 Avaiga Private Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+# an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations under the License.
+
+from .state import State
+
+
+class StateSupport(State):
+    pass