Adding text to launcher?

JupyterLab
1

I want to “simply” add some text into my jupyter lab launcher which should be visible on top of the launcher as a kind of greeting. I cannot imagine that this is an impossible task, but after spending hours and hours on this now without success I was wondering if anyone here had any good ideas on how to achieve this? I am doing ok with python but am pretty new to the whole jupyter lab setup. I’ve consulted various documentations of jupyter lab, jupyter lab extensions, I installed jupyter-app-launcher, but this only adds additional tiles and not text, and I’ve created a small extension of my own, but none of it works. The extension also only manages to add a new tile to the launcher, but no matter what I do, I do not manage to see any text. But - it’s just adding some simple text, surely this is somehow possible? Any help would be very much appreciated!

2

It looks like you may want to create a content header?

contentHeader

I would suggest start with Extension Tutorial — JupyterLab 4.2.3 documentation

1 Like
3

Of note, swapping the entire launcher is also possible, for example see GitHub - nebari-dev/jupyterlab-launchpad

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4

Thank you very much for those links! I tried adding the contentheader, which installs fine, but the populate command never shows in the command palette and, needless to say, neither does the widget.

I also tried the tutorial for adding the picture, and I get as far as building the extension and installing it successfully, however, when it gets to adding a command to the command palette, it fails again. I can see that the extension is activated in the browser console, but it just doesn’t seem to take any info from the index.ts at all. If I change the activation message there, nothing happens, and of course neither does adding something to the command palette.

I am beginning to think that there is some other issue here with my installation overall, but I can’t figure it out. I am using Anaconda and was worried I might have messed the installation up somehow, so I’ve un- and reinstalled the whole thing and am now just running a pretty basic version so far, but none of the configurations I try seem to be taken into account by my jupyterlab installation whatsoever. Very frustrating…

5

Can you share the exact code which you are using?

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6

Which part do you mean?

For the Extension tutorial I follewed the steps successfully until " Add an Astronomy Picture of the Day widget" and I fail at “Show an empty panel”.
My src/index.ts looks like this:

import {
  JupyterFrontEnd,
  JupyterFrontEndPlugin
} from '@jupyterlab/application';

import { ICommandPalette } from '@jupyterlab/apputils';

/**
 * Initialization data for the dnbextension.
 */
const plugin: JupyterFrontEndPlugin<void> = {
  id: 'dnbextension',
  description: 'Test test test.',
  autoStart: true,
  requires: [ICommandPalette],
  activate: (app: JupyterFrontEnd, palette: ICommandPalette) => {
    console.log('JupyterLab extension dnbextension is now activated!');
    console.log('ICommandPalette:', palette);
  }
};

export default plugin;

The extension loads successfully, but it doesn’t use any of the modified information, so it hasn’t changed the console.log notification from “dnblabextension is activated!” (which I assume is the default) to “… dnbextension is now activated!”, and it doesn’t show the log message for the “ICommandPalette”:

screenshot
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