Source: media/filter/client/ClientFilter.js

  1. import { DuplicateFilter } from "./tools/DuplicateFilter";
  2. import { DemoHeightFilter } from "./tools/DemoHeightFilter";
  4. export { ClientFilter }
  6. /**
  7.  * Class representing a client filter. 
  8.  */
  9. class ClientFilter {
  10.     /**
  11.      * Create a client filter.
  12.      * @param {Object} settings - The dictionary containing the client filter settings.
  13.      */
  14.     constructor(settings = {}) {
  15.         this.settings = settings;
  16.     }
  18.     /**
  19.      * Initialize filter objects based on client filter settings.
  20.      */
  21.     _initFilter() {
  22.         const _filterObjects = i => i != null && i !== false && Object.keys(i).length !== 0;
  24.         this.registeredDataDeletionFilter = [
  25.             this.settings.demoHeightFilter?.enable && new DemoHeightFilter(this.settings.demoHeightFilter?.heightMin)
  26.         ].filter(_filterObjects);
  28.         this.registeredDataManipulationFilter = [
  29.             this.settings.duplicateFilter?.enable && new DuplicateFilter('pid', true)
  30.         ].filter(_filterObjects);
  31.     }
  32.     /**
  33.      * Apply the client filters on the data. 
  34.      * @param {Array} data - List where filter are applied on each item. 
  35.      * @returns [itemStack, itemIndexStack]
  36.      */
  37.     filterData(data) {
  38.         this._initFilter();
  39.         const itemStack = [];
  40.         const itemIndexStack = [];
  42.         const dataCopy = structuredClone(data)
  43.         dataCopy.forEach((item, index) => {
  44.             if (item == null) {
  45.                 itemStack.push(undefined)
  46.                 itemIndexStack.push([index])
  47.             }
  49.             const isDeletion = this.registeredDataDeletionFilter[0]?.isFilterConditionMatched(item) || false;
  50.             if (isDeletion) {
  51.                 this.registeredDataDeletionFilter[0].applyFilterMethod(index, item, itemStack, itemIndexStack)
  52.                 return
  53.             }
  55.             const isModification = this.registeredDataManipulationFilter[0]?.isFilterConditionMatched(item) || false;
  56.             if (isModification) {
  57.                 this.registeredDataManipulationFilter[0].applyFilterMethod(index, item, itemStack, itemIndexStack)
  58.                 return
  59.             }
  61.             const isNormalDataInsert = !isDeletion & !isModification;
  63.             if (item != null) {
  64.                 item['numItemsOnSlide'] = 1;
  65.                 itemStack.push(item);
  66.                 itemIndexStack.push([index]);
  67.             }
  68.         })
  69.         return [itemStack, itemIndexStack]
  70.     }
  71. }