nested-datatables/src/script/IdParser.js

jQuery DataTables plugin for rendering nested DataTables in rows. Inner tables are independent of the data and layout from the outer table.

/**
 *
 * @author Andrej Gajdos <mail@andrejgajdos.com>
 *
 * IdParser is used for parsing string where result for tab_0_pattern_23_tab_3_pattern_28 is array [23,28]
 *
 * @constructor
 * @param {string} elementIdPar String which will be parsed
 * @param {string} patternPar   String pattern which ids we will find
 */
export default class IdParser {
  constructor(elementIdPar, patternPar) {
    this.elementId = elementIdPar;
    this.pattern = patternPar;
    this.patternOccurrence = this.countPatternOccurrence();
    this.parsedIds = [];
  }

  getElementId() {
    return this.elementId;
  }

  getPatternOccurrence() {
    return this.patternOccurrence;
  }

  getParsedIds() {
    return this.parsedIds;
  }

  setElementIdWithOccurrence(eleId) {
    this.elementId = eleId;
    this.patternOccurrence = this.countPatternOccurrence();
  }

  /**
   * Count occurrence of pattern
   * @return {number} Occurrence of pattern in String
   */
  countPatternOccurrence() {
    let re = new RegExp(this.pattern, 'g');
    return (this.elementId.match(re) || []).length;
  }

  /**
   * Parse numbers placed after pattern
   */
  parse() {
    let rowIds = [];
    let tempElementId = this.elementId;
    for (let i = this.patternOccurrence; i > 0; i--) {
      // find and delete first "tab_" occurrence in id
      let firstIndexOfTabPosition =
        tempElementId.indexOf('tab_') + 'tab_'.length;
      tempElementId = tempElementId.substring(
        firstIndexOfTabPosition,
        tempElementId.length
      );

      // find and delete first "row_" occurrence in id
      let rowPosition =
        tempElementId.indexOf(this.pattern + '_') + (this.pattern + '_').length;
      tempElementId = tempElementId.substring(
        rowPosition,
        tempElementId.length
      );

      // get number after first "row_" occurrence in id
      let rowId = '';
      let tabId = '';
      if (tempElementId.indexOf('tab_') !== -1) {
        tabId = tempElementId.substring(
          tempElementId.indexOf('tab_') + 'tab_'.length,
          tempElementId.indexOf('row_') - 1
        );
        rowId = tempElementId.substring(0, tempElementId.indexOf('_tab_'));
      } else {
        rowId = tempElementId.substring(0, tempElementId.length);
      }

      rowIds.push(rowId);
    }
    this.parsedIds = rowIds;
  }
}