Add a setting to enable the notebook to take up the full width

packages/notebook-extension/schema/full-width-notebook.json

@@ -0,0 +1,27 @@
+{
+  "title": "Jupyter Notebook Full Width Notebook",
+  "description": "Jupyter Notebook Notebook With settings",
+  "jupyter.lab.menus": {
+    "main": [
+      {
+        "id": "jp-mainmenu-view",
+        "items": [
+          {
+            "command": "notebook:toggle-full-width",
+            "rank": 4
+          }
+        ]
+      }
+    ]
+  },
+  "properties": {
+    "fullWidthNotebook": {
+      "type": "boolean",
+      "title": "Full Width Notebook",
+      "description": "Whether to the notebook should take up the full width of the application",
+      "default": false
+    }
+  },
+  "additionalProperties": false,
+  "type": "object"
+}

packages/notebook-extension/src/index.ts

@@ -64,6 +64,11 @@ const KERNEL_STATUS_FADE_OUT_CLASS = 'jp-NotebookKernelStatus-fade';
  */
 const SCROLLED_OUTPUTS_CLASS = 'jp-mod-outputsScrolled';
 
+/**
+ * The class for the full width notebook
+ */
+const FULL_WIDTH_NOTEBOOK_CLASS = 'jp-mod-fullwidth';
+
 /**
  * The command IDs used by the notebook plugins.
  */
@@ -72,6 +77,11 @@ namespace CommandIDs {
    * A command to open right sidebar for Editing Notebook Metadata
    */
   export const openEditNotebookMetadata = 'notebook:edit-metadata';
+
+  /**
+   * A command to toggle full width of the notebook
+   */
+  export const toggleFullWidth = 'notebook:toggle-full-width';
 }
 
 /**
@@ -202,6 +212,83 @@ const openTreeTab: JupyterFrontEndPlugin<void> = {
   },
 };
 
+/**
+ * A plugin to set the notebook to full width.
+ */
+const fullWidthNotebook: JupyterFrontEndPlugin<void> = {
+  id: '@jupyter-notebook/notebook-extension:full-width-notebook',
+  description: 'A plugin to set the notebook to full width.',
+  autoStart: true,
+  requires: [INotebookTracker],
+  optional: [ICommandPalette, ISettingRegistry, ITranslator],
+  activate: (
+    app: JupyterFrontEnd,
+    tracker: INotebookTracker,
+    palette: ICommandPalette | null,
+    settingRegistry: ISettingRegistry | null,
+    translator: ITranslator | null
+  ) => {
+    const trans = (translator ?? nullTranslator).load('notebook');
+
+    let fullWidth = false;
+
+    const toggleFullWidth = () => {
+      const current = tracker.currentWidget;
+      fullWidth = !fullWidth;
+      if (!current) {
+        return;
+      }
+      const content = current;
+      content.toggleClass(FULL_WIDTH_NOTEBOOK_CLASS, fullWidth);
+    };
+
+    let notebookSettings: ISettingRegistry.ISettings;
+
+    if (settingRegistry) {
+      const loadSettings = settingRegistry.load(fullWidthNotebook.id);
+
+      const updateSettings = (settings: ISettingRegistry.ISettings): void => {
+        const newFullWidth = settings.get('fullWidthNotebook')
+          .composite as boolean;
+        if (newFullWidth !== fullWidth) {
+          toggleFullWidth();
+        }
+      };
+
+      Promise.all([loadSettings, app.restored])
+        .then(([settings]) => {
+          notebookSettings = settings;
+          updateSettings(settings);
+          settings.changed.connect((settings) => {
+            updateSettings(settings);
+          });
+        })
+        .catch((reason: Error) => {
+          console.error(reason.message);
+        });
+    }
+
+    app.commands.addCommand(CommandIDs.toggleFullWidth, {
+      label: trans.__('Enable Full Width Notebook'),
+      execute: () => {
+        toggleFullWidth();
+        if (notebookSettings) {
+          notebookSettings.set('fullWidthNotebook', fullWidth);
+        }
+      },
+      isEnabled: () => tracker.currentWidget !== null,
+      isToggled: () => fullWidth,
+    });
+
+    if (palette) {
+      palette.addItem({
+        command: CommandIDs.toggleFullWidth,
+        category: 'Notebook Operations',
+      });
+    }
+  },
+};
+
 /**
  * The kernel logo plugin.
  */
@@ -597,6 +684,7 @@ const plugins: JupyterFrontEndPlugin<any>[] = [
   closeTab,
   openTreeTab,
   editNotebookMetadata,
+  fullWidthNotebook,
   kernelLogo,
   kernelStatus,
   notebookToolsWidget,

packages/notebook-extension/style/base.css

@@ -16,6 +16,16 @@
   - compact view on mobile
 */
 
+/* Make the notebook take up the full width of the page when jp-mod-fullwidth is set */
+
+body[data-notebook='notebooks']
+  .jp-NotebookPanel.jp-mod-fullwidth
+  .jp-WindowedPanel-outer {
+  padding-left: unset;
+  padding-right: unset !important;
+  width: unset;
+}
+
 /* Keep the notebook centered on the page */
 
 body[data-notebook='notebooks'] .jp-NotebookPanel-toolbar {

ui-tests/test/general.spec.ts

@@ -7,7 +7,7 @@ import { expect } from '@jupyterlab/galata';
 
 import { test } from './fixtures';
 
-import { hideAddCellButton, waitForKernelReady } from './utils';
+import { waitForNotebook } from './utils';
 
 test.describe('General', () => {
   test('The notebook should render', async ({ page, tmpPath, browserName }) => {
@@ -18,23 +18,6 @@ test.describe('General', () => {
     );
     await page.goto(`notebooks/${tmpPath}/${notebook}`);
 
-    // wait for the kernel status animations to be finished
-    await waitForKernelReady(page);
-    await page.waitForSelector(
-      ".jp-Notebook-ExecutionIndicator[data-status='idle']"
-    );
-
-    const checkpointLocator = '.jp-NotebookCheckpoint';
-    // wait for the checkpoint indicator to be displayed
-    await page.waitForSelector(checkpointLocator);
-
-    // remove the amount of seconds manually since it might display strings such as "3 seconds ago"
-    await page
-      .locator(checkpointLocator)
-      .evaluate(
-        (element) => (element.innerHTML = 'Last Checkpoint: 3 seconds ago')
-      );
-
     // check the notebook footer shows up on hover
     const notebookFooter = '.jp-Notebook-footer';
     await page.hover(notebookFooter);
@@ -46,11 +29,8 @@ test.describe('General', () => {
     // click to make the blue border around the cell disappear
     await page.click('.jp-WindowedPanel-outer');
 
-    // special case for firefox headless issue
-    // see https://github.com/jupyter/notebook/pull/6872#issuecomment-1549594166 for more details
-    if (browserName === 'firefox') {
-      await hideAddCellButton(page);
-    }
+    // wait for the notebook to be ready
+    await waitForNotebook(page, browserName);
 
     expect(await page.screenshot()).toMatchSnapshot('notebook.png');
   });

ui-tests/test/notebook.spec.ts

@@ -7,7 +7,7 @@ import { expect } from '@jupyterlab/galata';
 
 import { test } from './fixtures';
 
-import { runAndAdvance, waitForKernelReady } from './utils';
+import { waitForNotebook, runAndAdvance, waitForKernelReady } from './utils';
 
 const NOTEBOOK = 'example.ipynb';
 
@@ -175,4 +175,35 @@ test.describe('Notebook', () => {
 
     expect(page.isClosed());
   });
+
+  test('Toggle the full width of the notebook', async ({
+    page,
+    browserName,
+    tmpPath,
+  }) => {
+    const notebook = 'simple.ipynb';
+    await page.contents.uploadFile(
+      path.resolve(__dirname, `./notebooks/${notebook}`),
+      `${tmpPath}/${notebook}`
+    );
+    await page.goto(`notebooks/${tmpPath}/${notebook}`);
+
+    const menuPath = 'View>Enable Full Width Notebook';
+    await page.menu.clickMenuItem(menuPath);
+
+    const notebookPanel = page.locator('.jp-NotebookPanel').first();
+    await expect(notebookPanel).toHaveClass(/jp-mod-fullwidth/);
+
+    // click to make the blue border around the cell disappear
+    await page.click('.jp-WindowedPanel-outer');
+
+    // wait for the notebook to be ready
+    await waitForNotebook(page, browserName);
+
+    expect(await page.screenshot()).toMatchSnapshot('notebook-full-width.png');
+
+    // undo the full width
+    await page.menu.clickMenuItem(menuPath);
+    await expect(notebookPanel).not.toHaveClass(/jp-mod-fullwidth/);
+  });
 });

ui-tests/test/utils.ts

@@ -30,7 +30,9 @@ export async function waitForKernelReady(page: Page): Promise<void> {
     }, true);
     return finished;
   });
-  if (page.viewportSize()?.width > 600) {
+  const viewport = page.viewportSize();
+  const width = viewport?.width;
+  if (width && width > 600) {
     await page.waitForSelector('.jp-DebuggerBugButton[aria-disabled="false"]');
   }
 }
@@ -44,3 +46,34 @@ export async function hideAddCellButton(page: Page): Promise<void> {
     .locator('.jp-Notebook-footer')
     .evaluate((element) => (element.style.display = 'none'));
 }
+
+/**
+ * Wait for the notebook to be ready
+ */
+export async function waitForNotebook(
+  page: Page,
+  browserName = ''
+): Promise<void> {
+  // wait for the kernel status animations to be finished
+  await waitForKernelReady(page);
+  await page.waitForSelector(
+    ".jp-Notebook-ExecutionIndicator[data-status='idle']"
+  );
+
+  const checkpointLocator = '.jp-NotebookCheckpoint';
+  // wait for the checkpoint indicator to be displayed
+  await page.waitForSelector(checkpointLocator);
+
+  // remove the amount of seconds manually since it might display strings such as "3 seconds ago"
+  await page
+    .locator(checkpointLocator)
+    .evaluate(
+      (element) => (element.innerHTML = 'Last Checkpoint: 3 seconds ago')
+    );
+
+  // special case for firefox headless issue
+  // see https://github.com/jupyter/notebook/pull/6872#issuecomment-1549594166 for more details
+  if (browserName === 'firefox') {
+    await hideAddCellButton(page);
+  }
+}