//  Copyright 2019-2020 The Lux Authors.
// 
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.

import {
  Application, IPlugin
} from '@lumino/application';

import {
  Widget
} from '@lumino/widgets';

import {
  IJupyterWidgetRegistry
 } from '@jupyter-widgets/base';

import * as widgetExports from './widget';

import {
  MODULE_NAME, MODULE_VERSION
} from './version';

const EXTENSION_ID = 'luxwidget:plugin';

/**
 * The Lux plugin.
 */
const luxPlugin: IPlugin<Application<Widget>, void> = ({
  id: EXTENSION_ID,
  requires: [IJupyterWidgetRegistry],
  activate: activateWidgetExtension,
  autoStart: true
} as unknown) as IPlugin<Application<Widget>, void>;

export default luxPlugin;


/**
 * Activate the widget extension.
 */
function activateWidgetExtension(app: Application<Widget>, registry: IJupyterWidgetRegistry): void {
  registry.registerWidget({
    name: MODULE_NAME,
    version: MODULE_VERSION,
    exports: widgetExports,
  });
}