| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 { TABS_TYPE, CHART_TYPE } from '../componentTypes'; |
| |
| // This function traverses the layout from the passed id, returning an array |
| // of any child chartIds NOT nested within a Tabs component. These helps us identify |
| // if the charts at a given "Tabs" level are loaded |
| function findNonTabChildChartIds({ id, layout }) { |
| const chartIds = []; |
| function recurseFromNode(node) { |
| if (node && node.type === CHART_TYPE) { |
| if (node.meta && node.meta.chartId) { |
| chartIds.push(node.meta.chartId); |
| } |
| } else if ( |
| node && |
| node.type !== TABS_TYPE && |
| node.children && |
| node.children.length |
| ) { |
| node.children.forEach(childId => { |
| const child = layout[childId]; |
| if (child) { |
| recurseFromNode(child); |
| } |
| }); |
| } |
| } |
| |
| recurseFromNode(layout[id]); |
| |
| return chartIds; |
| } |
| |
| // This method is called frequently, so cache results |
| let cachedLayout; |
| let cachedIdsLookup = {}; |
| export default function findNonTabChildChartIdsWithCache({ id, layout }) { |
| if (cachedLayout === layout && cachedIdsLookup[id]) { |
| return cachedIdsLookup[id]; |
| } |
| if (layout !== cachedLayout) { |
| cachedLayout = layout; |
| cachedIdsLookup = {}; |
| } |
| cachedIdsLookup[id] = findNonTabChildChartIds({ layout, id }); |
| return cachedIdsLookup[id]; |
| } |