Allow flows to know if user is in advanced mode

homeassistant/data_entry_flow.py

@@ -253,6 +253,16 @@ class FlowHandler:
     # Set by developer
     VERSION = 1
 
+    @property
+    def source(self) -> Optional[str]:
+        """Source that initialized the flow."""
+        return self.context.get("source", None)
+
+    @property
+    def show_advanced_options(self) -> bool:
+        """If we should show advanced options."""
+        return self.context.get("show_advanced_options", False)
+
     @callback
     def async_show_form(
         self,

homeassistant/helpers/data_entry_flow.py

@@ -49,7 +49,13 @@ class FlowManagerIndexView(_BaseFlowManagerView):
     """View to create config flows."""
 
     @RequestDataValidator(
-        vol.Schema({vol.Required("handler"): vol.Any(str, list)}, extra=vol.ALLOW_EXTRA)
+        vol.Schema(
+            {
+                vol.Required("handler"): vol.Any(str, list),
+                vol.Optional("show_advanced_options", default=False): cv.boolean,
+            },
+            extra=vol.ALLOW_EXTRA,
+        )
     )
     async def post(self, request, data):
         """Handle a POST request."""
@@ -60,7 +66,11 @@ async def post(self, request, data):
 
         try:
             result = await self._flow_mgr.async_init(
-                handler, context={"source": config_entries.SOURCE_USER}
+                handler,
+                context={
+                    "source": config_entries.SOURCE_USER,
+                    "show_advanced_options": data["show_advanced_options"],
+                },
             )
         except data_entry_flow.UnknownHandler:
             return self.json_message("Invalid handler specified", HTTP_NOT_FOUND)

tests/components/config/test_config_entries.py

@@ -141,13 +141,17 @@ async def async_step_user(self, user_input=None):
             return self.async_show_form(
                 step_id="user",
                 data_schema=schema,
-                description_placeholders={"url": "https://example.com"},
+                description_placeholders={
+                    "url": "https://example.com",
+                    "show_advanced_options": self.show_advanced_options,
+                },
                 errors={"username": "Should be unique."},
             )
 
     with patch.dict(HANDLERS, {"test": TestFlow}):
         resp = await client.post(
-            "/api/config/config_entries/flow", json={"handler": "test"}
+            "/api/config/config_entries/flow",
+            json={"handler": "test", "show_advanced_options": True},
         )
 
     assert resp.status == 200
@@ -163,7 +167,10 @@ async def async_step_user(self, user_input=None):
             {"name": "username", "required": True, "type": "string"},
             {"name": "password", "required": True, "type": "string"},
         ],
-        "description_placeholders": {"url": "https://example.com"},
+        "description_placeholders": {
+            "url": "https://example.com",
+            "show_advanced_options": True,
+        },
         "errors": {"username": "Should be unique."},
     }
 

tests/test_data_entry_flow.py

@@ -26,7 +26,6 @@ async def async_create_flow(self, handler_key, *, context, data):
 
             flow = handler()
             flow.init_step = context.get("init_step", "init")
-            flow.source = context.get("source")
             return flow
 
         async def async_finish_flow(self, flow, result):