Compatibility with ipywidgets v8

CHANGELOG.md

@@ -5,6 +5,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ## UNRELEASED
 
 ### Updated
+  - Support for ipywidgets 8 [#3930](https://github.com/plotly/plotly.py/pull/3930)
   - Updated Plotly.js to from version 2.16.1 to version 2.17.0. See the [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/master/CHANGELOG.md#2170----2022-12-22) for more information. Notable changes include:
     - Add `shift` and `autoshift` to cartesian y axes to help avoid overlapping of multiple axes [[#6334](https://github.com/plotly/plotly.js/pull/6334)],
       with thanks to [Gamma Technologies](https://www.gtisoft.com) for sponsoring the related development!

packages/javascript/jupyterlab-plotly/package.json

@@ -60,7 +60,7 @@
     "webpack-cli": "^4.0.0"
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^2.0.0 || ^3.0.0 || ^4.0.0",
+    "@jupyter-widgets/base": ">=2.0.0 <7.0.0",
     "@jupyterlab/rendermime-interfaces": "^1.3.0 || ^2.0.0 || ^3.0.0",
     "@lumino/messaging": "^1.2.3",
     "@lumino/widgets": "^1.8.1",

packages/javascript/jupyterlab-plotly/src/Figure.ts

@@ -716,7 +716,10 @@ export class FigureModel extends DOMWidgetModel {
 
   static serializers: ISerializers = {
     ...DOMWidgetModel.serializers,
-    _data: { deserialize: py2js_deserializer, serialize: js2py_serializer },
+    _data: {
+      deserialize: py2js_deserializer,
+      serialize: js2py_serializer,
+    },
     _layout: {
       deserialize: py2js_deserializer,
       serialize: js2py_serializer,
@@ -807,7 +810,7 @@ export class FigureView extends DOMWidgetView {
   resizeEventListener: () => void;
 
   /**
-   * The perform_render method is called by processPhosphorMessage
+   * The perform_render method is called by processLuminoMessage
    * after the widget's DOM element has been attached to the notebook
    * output cell. This happens after the initialize of the
    * FigureModel, and it won't happen at all if the Python FigureWidget
@@ -901,10 +904,10 @@ export class FigureView extends DOMWidgetView {
   }
 
   /**
-   * Respond to phosphorjs events
+   * Respond to Lumino events
    */
-  processPhosphorMessage(msg: any) {
-    super.processPhosphorMessage.apply(this, arguments);
+  _processLuminoMessage(msg: any, _super: any) {
+    _super.apply(this, arguments);
     var that = this;
     switch (msg.type) {
       case "before-attach":
@@ -939,6 +942,21 @@ export class FigureView extends DOMWidgetView {
     }
   }
 
+  processPhosphorMessage(msg: any) {
+    this._processLuminoMessage(msg, super["processPhosphorMessage"]);
+
+    var that = this;
+    if (msg.type === "before-attach") {
+      window.addEventListener("resize", function () {
+        that.autosizeFigure();
+      });
+    }
+  }
+
+  processLuminoMessage(msg: any) {
+    this._processLuminoMessage(msg, super["processLuminoMessage"]);
+  }
+
   autosizeFigure() {
     var that = this;
     var layout = that.model.get("_layout");

packages/python/plotly/plotly/basedatatypes.py

@@ -819,18 +819,10 @@ def _repr_mimebundle_(self, include=None, exclude=None, validate=True, **kwargs)
 
         renderer_str = pio.renderers.default
         renderers = pio._renderers.renderers
-        renderer_names = renderers._validate_coerce_renderers(renderer_str)
-        renderers_list = [renderers[name] for name in renderer_names]
         from plotly.io._utils import validate_coerce_fig_to_dict
-        from plotly.io._renderers import MimetypeRenderer
 
         fig_dict = validate_coerce_fig_to_dict(self, validate)
-        # Mimetype renderers
-        bundle = {}
-        for renderer in renderers_list:
-            if isinstance(renderer, MimetypeRenderer):
-                bundle.update(renderer.to_mimebundle(fig_dict))
-        return bundle
+        return renderers._build_mime_bundle(fig_dict, renderer_str, **kwargs)
 
     def _ipython_display_(self):
         """

packages/python/plotly/plotly/basewidget.py

@@ -733,12 +733,29 @@ def _handler_js2py_pointsCallback(self, change):
 
     # Display
     # -------
+    def _repr_html_(self):
+        """
+        Customize html representation
+        """
+        raise NotImplementedError  # Prefer _repr_mimebundle_
+
+    def _repr_mimebundle_(self, include=None, exclude=None, validate=True, **kwargs):
+        """
+        Return mimebundle corresponding to default renderer.
+        """
+        return {
+            "application/vnd.jupyter.widget-view+json": {
+                "version_major": 2,
+                "version_minor": 0,
+                "model_id": self._model_id,
+            },
+        }
+
     def _ipython_display_(self):
         """
         Handle rich display of figures in ipython contexts
         """
-        # Override BaseFigure's display to make sure we display the widget version
-        widgets.DOMWidget._ipython_display_(self)
+        raise NotImplementedError  # Prefer _repr_mimebundle_
 
     # Callbacks
     # ---------

packages/python/plotly/plotly/io/_base_renderers.py

@@ -609,11 +609,14 @@ def to_mimebundle(self, fig_dict):
 
     def build_filename(self):
         ip = IPython.get_ipython() if IPython else None
-        cell_number = list(ip.history_manager.get_tail(1))[0][1] + 1 if ip else 0
-        filename = "{dirname}/figure_{cell_number}.html".format(
+        if ip:
+            cell_number = next(ip.history_manager.get_tail(1), (0, -1, ""))[1] + 1
+        else:
+            cell_number = 0
+
+        return "{dirname}/figure_{cell_number}.html".format(
             dirname=self.html_directory, cell_number=cell_number
         )
-        return filename
 
     def build_url(self, filename):
         return filename