@krassowski/jupyterlab-lsp/lib/adapters/notebook/index.js

Language Server Protocol integration for JupyterLab

import { INotebookTracker } from '@jupyterlab/notebook';
import { ILSPAdapterManager, PLUGIN_ID } from '../../tokens';
import { NotebookAdapter } from './notebook';
export const CellContextMenuEntryPoint = 'notebook-cell-context-menu';
export const NOTEBOOK_ADAPTER = {
    id: PLUGIN_ID + ':NotebookAdapter',
    requires: [ILSPAdapterManager, INotebookTracker],
    activate(app, adapterManager, notebookTracker) {
        adapterManager.registerAdapterType({
            name: 'notebook',
            tracker: notebookTracker,
            adapter: NotebookAdapter,
            entrypoint: CellContextMenuEntryPoint,
            get_id(widget) {
                // TODO can we use id instead of content.id?
                return widget.content.id;
            },
            context_menu: {
                selector: '.jp-Notebook .jp-CodeCell .jp-Editor',
                // position context menu entries after 10th but before 11th default entry
                // this lets it be before "Clear outputs" which is the last entry of the
                // CodeCell contextmenu and plays nicely with the first notebook entry
                // ('Clear all outputs') thus should stay as the last one.
                // see https://github.com/blink1073/jupyterlab/blob/3592afd328116a588e3307b4cdd9bcabc7fe92bb/packages/notebook-extension/src/index.ts#L802
                // TODO: PR bumping rank of clear all outputs instead?
                // adding a very small number (epsilon) places the group just after 10th entry
                rank_group: 10 + Number.EPSILON,
                // the group size is increased by one to account for separator,
                // and by another one to prevent exceeding 11th rank by epsilon.
                // TODO hardcoded space for 2 commands only!
                rank_group_size: 2 + 2,
                callback(manager) {
                    manager.add_context_separator(0);
                }
            }
        });
    },
    autoStart: true
};
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