/********************************************************************************
 * Copyright (C) 2019 TypeFox and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/ import { TreeWidget } from './tree-widget' ; import { SelectableTreeNode } from './tree-selection' ; export type TreeWidgetSelection = ReadonlyArray < Readonly < SelectableTreeNode > > & { source : TreeWidget ; } ; export namespace TreeWidgetSelection { export function isSource ( selection , source ) { return getSource ( selection ) === source ; } export function getSource ( selection ) { return is ( selection ) ? selection . source : undefined ; } export function is ( selection ) { return Array . isArray ( selection ) && ( 'source' in selection ) && < any > selection [ 'source' ] instanceof TreeWidget ; } export function create ( source ) { return Object . assign ( source . model . selectedNodes , { source } ) ; } }