bugfix and comlite MIM render

Author: terapyon

examples/introduction.ipynb

@@ -73,13 +73,12 @@
    "outputs": [
     {
      "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "e6b8538beb4e4601b2dc2054ab1eb41a",
-       "version_major": 2,
-       "version_minor": 0
+      "application/vnd.netvis+json": {
+       "data": "\n{\n  \"nodes\": [\n    {\n      \"page_id\": 1,\n      \"id\": \"Network\"\n    },\n    {\n      \"page_id\": 2,\n      \"id\": \"Graph\"\n    }\n  ],\n  \"links\": [\n    {\n      \"source\": \"Network\",\n      \"target\": \"Graph\"\n    }\n  ]\n}\n",
+       "version": "0.4.0"
       },
       "text/plain": [
-       "NetVis(value='\\n{\\n  \"nodes\": [\\n    {\\n      \"page_id\": 1,\\n      \"id\": \"Network\"\\n    },\\n    {\\n      \"page…"
+       "NetVis Graph"
       ]
      },
      "execution_count": 4,
@@ -254,7 +253,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.7"
+   "version": "3.11.7"
   }
  },
  "nbformat": 4,

net_vis/_frontend.py

@@ -9,4 +9,4 @@
 """
 
 module_name = "net_vis"
-module_version = "^0.3.1"
+module_version = "^0.4.0"

net_vis/_version.py

@@ -4,5 +4,5 @@
 # Copyright (c) Manabu TERADA.
 # Distributed under the terms of the Modified BSD License.
 
-version_info = (0, 3, 1)
+version_info = (0, 4, 0)
 __version__ = ".".join(map(str, version_info))

src/index.ts

@@ -0,0 +1,12 @@
+// Entry point for Node/webpack consumers.
+// Re-export the MIME extension and public symbols explicitly to avoid duplication.
+export {
+  default as mimeExtension,
+  MIME_TYPE,
+  NetVisMimeRenderer,
+  parseGraphData,
+  validateVersion
+} from './mimePlugin';
+
+export * from './renderer';
+export * from './version';

src/mimePlugin.ts

@@ -1,12 +1,6 @@
 // Copyright (c) Manabu TERADA
 // Distributed under the terms of the Modified BSD License.
 
-import {
-  JupyterFrontEnd,
-  JupyterFrontEndPlugin,
-} from '@jupyterlab/application';
-
-import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
 import { IRenderMime } from '@jupyterlab/rendermime-interfaces';
 import { Widget } from '@lumino/widgets';
 
@@ -132,49 +126,25 @@ export class NetVisMimeRenderer extends Widget implements IRenderMime.IRenderer
 }
 
 /**
- * Extension definition for JupyterLab 4.x
+ * Mime extension definition (JupyterLab expects rendererFactory & rank here).
  */
-const mimeExtension: JupyterFrontEndPlugin<void> = {
-  id: 'net_vis:mime',
-  autoStart: true,
-  requires: [IRenderMimeRegistry],
-  activate: (app: JupyterFrontEnd, rendermime: IRenderMimeRegistry) => {
-    console.log('NetVis MIME extension activation started');
-
-    /**
-     * Create a renderer factory for NetVis data.
-     */
-    const factory: IRenderMime.IRendererFactory & { defaultRank?: number } = {
-      safe: true,
-      mimeTypes: [MIME_TYPE],
-      // Explicit default rank to match JupyterLab 4 expectations and avoid
-      // `defaultRank` lookups on undefined.
-      defaultRank: 0,
-      createRenderer: (options: IRenderMime.IRendererOptions) => {
-        return new NetVisMimeRenderer(options);
-      }
-    };
-
-    // Register the factory with fallback paths for JL3/JL4
-    try {
-      // Preferred path (JL4): factory carries its defaultRank
-      rendermime.addFactory(factory);
-    } catch (primaryError) {
-      console.warn('[NetVis] Primary factory registration failed, retrying with explicit rank', primaryError);
-      try {
-        // JL3-style explicit rank argument
-        rendermime.addFactory(factory, 0);
-      } catch (fallbackError) {
-        console.error('[NetVis] Failed to register MIME renderer factory', {
-          primaryError,
-          fallbackError
-        });
-        return;
-      }
-    }
-
-    console.log(`NetVis MIME renderer registered for ${MIME_TYPE}`);
+const rendererFactory: IRenderMime.IRendererFactory & { defaultRank?: number } = {
+  safe: true,
+  mimeTypes: [MIME_TYPE],
+  // Explicit default rank to match JupyterLab 4 expectations and avoid
+  // `defaultRank` lookups on undefined.
+  defaultRank: 0,
+  createRenderer: (options: IRenderMime.IRendererOptions) => {
+    return new NetVisMimeRenderer(options);
   }
 };
 
+const mimeExtension: IRenderMime.IExtension = {
+  id: 'net_vis:mime',
+  rendererFactory,
+  // Rank used by JupyterLab registry; also keep defaultRank on factory.
+  rank: 0,
+  dataType: 'json'
+};
+
 export default mimeExtension;