@jupyterlab/toc
Version:
JupyterLab - Table of Contents widget
43 lines • 1.3 kB
JavaScript
// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import { DisposableDelegate } from '@lumino/disposable';
/**
* Class for registering table of contents generators.
*/
export class TableOfContentsRegistry {
constructor() {
this._generators = new Map();
this._idCounter = 0;
}
/**
* Finds a table of contents model for a widget.
*
* ## Notes
*
* - If unable to find a table of contents model, the method return `undefined`.
*
* @param widget - widget
* @param configuration - Default model configuration
* @returns Table of contents model
*/
getModel(widget, configuration) {
for (const generator of this._generators.values()) {
if (generator.isApplicable(widget)) {
return generator.createNew(widget, configuration);
}
}
}
/**
* Adds a table of contents generator to the registry.
*
* @param generator - table of contents generator
*/
add(generator) {
const id = this._idCounter++;
this._generators.set(id, generator);
return new DisposableDelegate(() => {
this._generators.delete(id);
});
}
}
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