text: /*
   * Copyright 2020 The CodeWorld Authors. All rights reserved.
   *
   * 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.
   */
  
  const directoryTreeId = '#directoryTree';
  const events = {
    SELECTION_CLEARED: 'selectionCleared',
  };
  const nodeTypes = {
    DIRECTORY: 'directory',
    PROJECT: 'project',
  };
  
  function clearSelectedNode() {
    const directoryTree = $(directoryTreeId);
  
    const state = directoryTree.tree('getState');
    state.selected_node = [];
    directoryTree.tree('setState', state);
  
    directoryTree.trigger(events.SELECTION_CLEARED);
  }
  
  let idCounter = 0;
  
  function createNodeId(type, name) {
    return `jqtree-element__${type}__${name}__${idCounter++}}`;
  }
  
  function getRootNode() {
    return $(directoryTreeId).tree('getTree');
  }
  
  function getSelectedNode() {
    const node = $(directoryTreeId).tree('getSelectedNode');
  
    return node ? node : null;
  }
  
  function isDirectory(node) {
    return node ? node.type === nodeTypes.DIRECTORY : false;
  }
  
  function isProject(node) {
    return node ? node.type === nodeTypes.PROJECT : false;
  }
  
  function selectNode(node) {
    $(directoryTreeId).tree('selectNode', node);
  }
  
  export {
    events,
    nodeTypes,
    clearSelectedNode,
    createNodeId,
    getRootNode,
    getSelectedNode,
    isDirectory,
    isProject,
    selectNode,
  };
  