Dash() add new parameter hide_all_callbacks

CHANGELOG.md

@@ -7,6 +7,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 ## Added
 - [#3534]((https://github.com/plotly/dash/pull/3534) Adds `playsInline` prop to `html.Video`.  Based on [#2338]((https://github.com/plotly/dash/pull/2338)
 - [#3541](https://github.com/plotly/dash/pull/3541) Add `attributes` dictionary to be be formatted on script/link (_js_dist/_css_dist) tags of the index, allows for `type="module"` or `type="importmap"`. [#3538](https://github.com/plotly/dash/issues/3538)
+- [#3564](https://github.com/plotly/dash/pull/3564) Add new parameter `hide_all_callbacks` to `dash.Dash()`. Closes [#3493](https://github.com/plotly/dash/issues/3493)
 
 ## Fixed
 - [#3541](https://github.com/plotly/dash/pull/3541) Remove last reference of deprecated `pkg_resources`.

dash/_callback.py

@@ -79,7 +79,7 @@ def callback(
     on_error: Optional[Callable[[Exception], Any]] = None,
     api_endpoint: Optional[str] = None,
     optional: Optional[bool] = False,
-    hidden: Optional[bool] = False,
+    hidden: Optional[bool] = None,
     **_kwargs,
 ) -> Callable[..., Any]:
     """
@@ -277,7 +277,7 @@ def insert_callback(
     dynamic_creator: Optional[bool] = False,
     no_output=False,
     optional=False,
-    hidden=False,
+    hidden=None,
 ):
     if prevent_initial_call is None:
         prevent_initial_call = config_prevent_initial_callbacks
@@ -651,7 +651,7 @@ def register_callback(
         running=running,
         no_output=not has_output,
         optional=_kwargs.get("optional", False),
-        hidden=_kwargs.get("hidden", False),
+        hidden=_kwargs.get("hidden", None),
     )
 
     # pylint: disable=too-many-locals

dash/dash.py

@@ -69,7 +69,12 @@
 from . import _watch
 from . import _get_app
 
-from ._get_app import with_app_context, with_app_context_async, with_app_context_factory
+from ._get_app import (
+    get_app,
+    with_app_context,
+    with_app_context_async,
+    with_app_context_factory,
+)
 from ._grouping import map_grouping, grouping_len, update_args_group
 from ._obsolete import ObsoleteChecker
 
@@ -367,6 +372,13 @@ class Dash(ObsoleteChecker):
         those callbacks you wish to have an initial call. This setting has no
         effect on triggering callbacks when their inputs change later on.
 
+    :param hide_all_callbacks: Default ``False``: Sets the default value of
+        ``hidden`` for all callbacks added to the app. Normally all callbacks
+        are visible in the devtools callbacks tab. You can set this for
+        individual callbacks by setting ``hidden`` in their definitions, or set
+        it ``True`` here in which case you must explicitly set it ``False`` for
+        those callbacks you wish to remain visible in the devtools callbacks tab.
+
     :param show_undo_redo: Default ``False``, set to ``True`` to enable undo
         and redo buttons for stepping through the history of the app state.
     :type show_undo_redo: boolean
@@ -457,6 +469,7 @@ def __init__(  # pylint: disable=too-many-statements
         external_stylesheets: Optional[Sequence[Union[str, Dict[str, Any]]]] = None,
         suppress_callback_exceptions: Optional[bool] = None,
         prevent_initial_callbacks: bool = False,
+        hide_all_callbacks: bool = False,
         show_undo_redo: bool = False,
         extra_hot_reload_paths: Optional[Sequence[str]] = None,
         plugins: Optional[list] = None,
@@ -537,6 +550,7 @@ def __init__(  # pylint: disable=too-many-statements
                 "suppress_callback_exceptions", suppress_callback_exceptions, False
             ),
             prevent_initial_callbacks=prevent_initial_callbacks,
+            hide_all_callbacks=hide_all_callbacks,
             show_undo_redo=show_undo_redo,
             extra_hot_reload_paths=extra_hot_reload_paths or [],
             title=title,
@@ -1645,7 +1659,18 @@ def _setup_server(self):
 
             self.callback_map[k] = _callback.GLOBAL_CALLBACK_MAP.pop(k)
 
+        # Get config of current app instance
+        current_app_config = get_app().config
+
         self._callback_list.extend(_callback.GLOBAL_CALLBACK_LIST)
+        # For each callback function, if the hidden parameter uses the default value None,
+        # replace it with the actual value of the hide_all_callbacks property of the current application instance.
+        self._callback_list = [
+            {**_callback, "hidden": current_app_config.get("hide_all_callbacks", False)}
+            if _callback.get("hidden") is None
+            else _callback
+            for _callback in self._callback_list
+        ]
         _callback.GLOBAL_CALLBACK_LIST.clear()
 
         _validate.validate_background_callbacks(self.callback_map)