Add ILabStatus

app/index.js

@@ -91,6 +91,9 @@ async function main() {
     require('@retrolab/terminal-extension'),
 
     // @jupyterlab plugins
+    require('@jupyterlab/application-extension').default.filter(({ id }) =>
+      ['@jupyterlab/application-extension:faviconbusy'].includes(id)
+    ),
     require('@jupyterlab/apputils-extension').default.filter(({ id }) =>
       [
         '@jupyterlab/apputils-extension:palette',

app/package.json

@@ -19,6 +19,7 @@
   },
   "resolutions": {
     "@jupyterlab/application": "~3.1.0-alpha.8",
+    "@jupyterlab/application-extension": "~3.1.0-alpha.8",
     "@jupyterlab/apputils": "~3.1.0-alpha.8",
     "@jupyterlab/apputils-extension": "~3.1.0-alpha.8",
     "@jupyterlab/celltags": "~3.1.0-alpha.8",
@@ -86,6 +87,7 @@
     "react-dom": "~17.0.2"
   },
   "dependencies": {
+    "@jupyterlab/application-extension": "^3.1.0-alpha.8",
     "@jupyterlab/apputils-extension": "^3.1.0-alpha.8",
     "@jupyterlab/celltags": "^3.1.0-alpha.8",
     "@jupyterlab/codemirror-extension": "^3.1.0-alpha.8",
@@ -154,6 +156,7 @@
       "@retrolab/notebook-extension",
       "@retrolab/terminal-extension",
       "@retrolab/tree-extension",
+      "@jupyterlab/application-extension",
       "@jupyterlab/apputils-extension",
       "@jupyterlab/codemirror-extension",
       "@jupyterlab/completer-extension",

packages/application-extension/src/index.ts

@@ -2,6 +2,7 @@
 // Distributed under the terms of the Modified BSD License.
 
 import {
+  ILabStatus,
   IRouter,
   JupyterFrontEnd,
   JupyterFrontEndPlugin,
@@ -283,6 +284,21 @@ const spacer: JupyterFrontEndPlugin<void> = {
   }
 };
 
+/**
+ * The default JupyterLab application status provider.
+ */
+const status: JupyterFrontEndPlugin<ILabStatus> = {
+  id: '@jupyterlab/application-extension:status',
+  autoStart: true,
+  provides: ILabStatus,
+  activate: (app: JupyterFrontEnd) => {
+    if (!(app instanceof RetroApp)) {
+      throw new Error(`${status.id} must be activated in RetroLab.`);
+    }
+    return app.status;
+  }
+};
+
 /**
  * A plugin to display the document title in the browser tab title
  */
@@ -501,6 +517,7 @@ const plugins: JupyterFrontEndPlugin<any>[] = [
   sessionDialogs,
   shell,
   spacer,
+  status,
   tabTitle,
   title,
   topVisibility,

packages/application/src/app.ts

@@ -8,6 +8,8 @@ import {
 
 import { createRendermimePlugins } from '@jupyterlab/application/lib/mimerenderers';
 
+import { LabStatus } from '@jupyterlab/application/lib/status';
+
 import { PageConfig } from '@jupyterlab/coreutils';
 
 import { IRenderMime } from '@jupyterlab/rendermime-interfaces';
@@ -48,6 +50,11 @@ export class RetroApp extends JupyterFrontEnd<IRetroShell> {
    */
   readonly namespace = this.name;
 
+  /**
+   * The application busy and dirty status signals and flags.
+   */
+  readonly status = new LabStatus(this);
+
   /**
    * The version of the application.
    */

yarn.lock

@@ -1230,6 +1230,25 @@
     "@types/yargs" "^15.0.0"
     chalk "^4.0.0"
 
+"@jupyterlab/application-extension@^3.1.0-alpha.8":
+  version "3.1.0-alpha.8"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/application-extension/-/application-extension-3.1.0-alpha.8.tgz#00fced24a2751e80e1d17466ed035dfa9be68b4b"
+  integrity sha512-UAmzq05iSACzz2KNEawrfl2S7/ahMPYEIrK1qpgg2rcRIGENaw3lfruJl9GMKxPJ/ZLtMI4/y97yNoOoRWQVhQ==
+  dependencies:
+    "@jupyterlab/application" "^3.1.0-alpha.8"
+    "@jupyterlab/apputils" "^3.1.0-alpha.8"
+    "@jupyterlab/coreutils" "^5.1.0-alpha.8"
+    "@jupyterlab/property-inspector" "^3.1.0-alpha.8"
+    "@jupyterlab/settingregistry" "^3.1.0-alpha.8"
+    "@jupyterlab/statedb" "^3.1.0-alpha.8"
+    "@jupyterlab/translation" "^3.1.0-alpha.8"
+    "@jupyterlab/ui-components" "^3.1.0-alpha.8"
+    "@lumino/algorithm" "^1.3.3"
+    "@lumino/coreutils" "^1.5.3"
+    "@lumino/disposable" "^1.4.3"
+    "@lumino/widgets" "^1.19.0"
+    react "^17.0.1"
+
 "@jupyterlab/application@^3.1.0-alpha.8":
   version "3.1.0-alpha.8"
   resolved "https://registry.yarnpkg.com/@jupyterlab/application/-/application-3.1.0-alpha.8.tgz#25c427e79f09fbf9b36816a47bedd2c4bf394d80"