simplified Python demo code

Author: forman

chartlets.py/demo/my_extension/my_panel_1.py

@@ -3,8 +3,8 @@
 from chartlets import Component, Input, Output, State
 from chartlets.components import VegaChart, Box, Select
 
-from server.contribs import Panel
 from server.context import Context
+from server.panel import Panel
 
 
 panel = Panel(__name__, title="Panel A")

chartlets.py/demo/my_extension/my_panel_2.py

@@ -3,8 +3,8 @@
 from chartlets import Component, Input, State, Output
 from chartlets.components import VegaChart, Box, Select
 
-from server.contribs import (Panel)
 from server.context import Context
+from server.panel import (Panel)
 
 
 panel = Panel(__name__, title="Panel B")

chartlets.py/demo/my_extension/my_panel_3.py

@@ -1,8 +1,8 @@
 from chartlets import Component, Input, State, Output
 from chartlets.components import Box, Select, Checkbox, Typography
 
-from server.contribs import Panel
 from server.context import Context
+from server.panel import Panel
 
 
 panel = Panel(__name__, title="Panel C")

chartlets.py/demo/server/app.py

@@ -17,8 +17,7 @@
 from chartlets.controllers import get_layout
 
 from .context import Context
-from .contribs.panel import Panel
-from .utils.json_encoder import NumpyJSONEncoder
+from .panel import Panel
 
 
 # This would be done by a xcube server extension
@@ -52,8 +51,7 @@ def write_error(self, status_code: int, **kwargs: Any) -> None:
 
     def write_response(self, response: Response):
         if response.ok:
-            self.set_header("Content-Type", "text/json")
-            self.write(json.dumps({"result": response.data}, cls=NumpyJSONEncoder))
+            self.write({"result": response.data})
         else:
             self.set_status(response.status, response.reason)
 

chartlets.py/demo/server/contribs/__init__.py

@@ -2,7 +2,11 @@
 
 
 class Panel(Contribution):
-    """Panel contribution"""
+    """A Panel UI contribution.
+
+    It is up to the application UI to render its UI contributions
+    in an appropriate form.
+    """
 
     def __init__(self, name: str, title: str | None = None):
         super().__init__(name, title=title)