try to call hello world

Author: kylebarron

lonboard/_layer.py

@@ -21,6 +21,7 @@
     Union,
 )
 
+import anywidget
 import ipywidgets
 import traitlets
 from arro3.core import Table
@@ -538,6 +539,10 @@ def _handle_anywidget_dispatch(
         self.on_msg(_handle_anywidget_dispatch)
         super().__init__(**kwargs)  # type: ignore
 
+    @anywidget.experimental.command
+    def helloworld(self, msg, buffers):
+        return "hello world", buffers
+
     _layer_type = traitlets.Unicode("bitmap-tile").tag(sync=True)
 
     data = traitlets.Union(

lonboard/_map.py

@@ -5,6 +5,7 @@
 from pathlib import Path
 from typing import IO, TYPE_CHECKING, Optional, Sequence, TextIO, Union, overload
 
+import anywidget
 import ipywidgets
 import traitlets
 from ipywidgets.embed import embed_minimal_html
@@ -96,6 +97,10 @@ def __init__(
 
         super().__init__(layers=layers, **kwargs)
 
+    @anywidget.experimental.command
+    def helloworld(self, msg, buffers):
+        return "hello world from top-level map component", buffers
+
     _esm = bundler_output_dir / "index.js"
     _css = bundler_output_dir / "index.css"
 

poetry.lock

@@ -284,9 +284,13 @@ export class BitmapTileModel extends BaseLayerModel {
   }
 
   async getTileData(tile: TileLoadProps) {
+    console.log("in getTileData");
     const { invoke } = this.anywidgetExperimental;
+
     console.log(invoke);
+    console.log("calling invoke");
     const out = await invoke("helloworld");
+    console.log("returned from invoke");
     console.log(out);
 
     // const { data, getTileData, fetch } = this.props;