Interface IWidgetManager

callback handlers specific to a view

Creates a promise for a view of a given model

Make sure the view creation is not out of order with any state updates.

Get a promise for a model by model id.

If a model is not found, undefined is returned (NOT a promise). However, the calling code should also deal with the case where a rejected promise is returned, and should treat that also as a model not found.

Returns true if the given model is registered, otherwise false.

This is a synchronous way to check if a model is registered.

Create and return a promise for a new widget model

Example

widget_manager.new_model({
     model_name: 'IntSlider',
     model_module: '@jupyter-widgets/controls',
     model_module_version: '1.0.0',
     model_id: 'u-u-i-d'
}).then((model) => { console.log('Create success!', model); },
 (err) => {console.error(err)});

Create a comm and new widget model.

Register a model instance promise with the manager.

By registering the model, it can later be retrieved with get_model.

Resolve a URL relative to the current notebook location.

The default implementation just returns the original url.