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default function _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}","function _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nexport default function _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  return Constructor;\n}","/**\n * @file\n * Render standard select with hierarchical options: as set of selects, one for each level of the hierarchy.\n */\n\n(($, wrapperClass, pluginName): void => {\n  'use strict';\n\n  const pluginId = 'plugin_' + pluginName;\n\n  function $createElement<K extends keyof HTMLElementTagNameMap>(name: K): JQuery<HTMLElementTagNameMap[K]> {\n    return $<HTMLElementTagNameMap[K]>(document.createElement(name));\n  }\n\n  class ClientSideHierarchicalSelect implements Cshs.Plugin {\n    protected readonly $element: JQuery<HTMLSelectElement>;\n    protected readonly settings: Cshs.Settings;\n    protected readonly disabled: boolean;\n    protected readonly elementId: string;\n    protected readonly isMultiple: boolean;\n    protected readonly elementClasses: string;\n    protected readonly options: Cshs.Option[] = [];\n    protected readonly groups: Record<string, JQuery<HTMLOptGroupElement> | undefined> = {};\n    protected currentLevel = -1;\n    protected rootValue: string | undefined;\n\n    constructor(element: HTMLSelectElement, settings: Partial<Cshs.Settings>) {\n      this.$element = $(element);\n      this.disabled = element.disabled;\n      this.elementId = element.id;\n      this.isMultiple = element.multiple;\n      this.elementClasses = element.className.replace('simpler-select-root', 'simpler-select');\n      // Use `$.extend()` to not care about `Object.assign()` polyfill for IE11.\n      this.settings = $.extend({\n        noFirstLevelNone: false,\n        noneLabel: '- Please choose -',\n        noneValue: '_none',\n        labels: [],\n      }, settings);\n\n      this.init();\n    }\n\n    init(): void {\n      // Ensure that we'll clearly initiate a new instance.\n      this.destroy();\n      this.buildOptions();\n\n      let $currentWrapper = this.createSelectElement(this.$element, this.rootValue, !this.settings.noFirstLevelNone);\n\n      if ($currentWrapper !== this.$element) {\n        let lastSelectedValue = this.$element.val();\n\n        if (lastSelectedValue instanceof Array) {\n          lastSelectedValue = lastSelectedValue.pop();\n        } else if (typeof lastSelectedValue === 'number') {\n          lastSelectedValue = lastSelectedValue.toString();\n        }\n\n        if (lastSelectedValue) {\n          // Reverse since we started from the last value.\n          for (const value of this.getLineage(lastSelectedValue).reverse()) {\n            $currentWrapper.find('select').val(value);\n            $currentWrapper = this.createSelectElement($currentWrapper, value);\n          }\n        }\n\n        // Hide the original.\n        this.$element.hide();\n      }\n    }\n\n    destroy(): void {\n      // Allow reinitialization here.\n      // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n      // @ts-ignore\n      this['groups'] = {};\n      this.options.length = 0;\n      this.removeSubsequentSelects(this.$element.show());\n    }\n\n    protected buildOptions(): void {\n      for (const option of this.$element[0].options) {\n        const group = option.parentNode instanceof HTMLOptGroupElement ? option.parentNode.label : undefined;\n\n        if (group) {\n          // Create the mapping as we'll need the total count later.\n          this.groups[group] = undefined;\n        }\n\n        this.options.push({\n          group,\n          value: option.value,\n          label: option.text.trim(),\n          // `undefined` and `''` results in an `undefined`.\n          parent: option.dataset.parent || undefined,\n        });\n      }\n\n      // If the first option is a `_none`, then the next one is the\n      // real where we should look for a parent to determine whether\n      // the hierarchy starts from a specific item.\n      this.rootValue = this.options[this.options[0]?.value === this.settings.noneValue ? 1 : 0]?.parent;\n    }\n\n    protected createSelectElement<T extends JQuery>($element: T, parent?: string, addNoneOption = true): T | JQuery<HTMLDivElement> {\n      const options = this.getChildren(parent);\n\n      if (!options.length) {\n        return $element;\n      }\n\n      this.currentLevel++;\n\n      const levelPrefix = '--level-' + this.currentLevel;\n      const selectId = this.elementId + levelPrefix;\n      const $wrapper = $createElement('div')\n        // Add level-specific class to ease the styling.\n        .addClass([wrapperClass, wrapperClass + levelPrefix])\n        // Provide the read-only attribute for those who may need to query it.\n        .attr('data-level', this.currentLevel);\n      const $select = $createElement('select')\n        .addClass(this.elementClasses)\n        .attr('id', selectId)\n        // Suppress `Argument of type 'boolean' is not assignable to\n        // parameter of type 'string | number` because it's not true.\n        // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n        // @ts-ignore TS2345.\n        .attr('disabled', this.disabled);\n\n      if (addNoneOption) {\n        $createElement('option')\n          .attr('value', this.settings.noneValue)\n          .attr('data-parent-value', parent || null)\n          .text(this.settings.noneLabel)\n          .appendTo($select);\n      }\n\n      for (const option of options) {\n        // Do not add the `_none` option 'cause it's already added above.\n        if (option.value !== this.settings.noneValue) {\n          this.createOptionElement($select, option);\n        }\n      }\n\n      $select.on('change', (event): void => {\n        const selectedOption = event.target.options[event.target.selectedIndex];\n\n        this.removeSubsequentSelects($wrapper);\n\n        this\n          .$element\n          // The `data-parent-value` exists only on the `_none` option, meaning\n          // we should refer to the selection picked in the previous select.\n          .val(this.getValue(selectedOption.dataset.parentValue ?? selectedOption.value))\n          .trigger(event.type);\n\n        if (selectedOption.value !== this.settings.noneValue) {\n          this.createSelectElement($wrapper, selectedOption.value);\n        }\n      });\n\n      if (this.settings.labels[this.currentLevel]) {\n        $createElement('label')\n          .attr('for', selectId)\n          .text(this.settings.labels[this.currentLevel])\n          .appendTo($wrapper);\n      }\n\n      this.$element.trigger(jQuery.Event(`${pluginName}ChildCreated`, { $wrapper }));\n\n      return $wrapper\n        .append($select)\n        .insertAfter($element);\n    }\n\n    protected createOptionElement($select: JQuery<HTMLSelectElement>, option: Cshs.Option): JQuery<HTMLOptionElement> {\n      const $option = $createElement('option')\n        .attr('value', option.value)\n        .text(option.label);\n\n      if (this.getChildren(option.value).length) {\n        $option.addClass('has-children');\n      }\n\n      // Group options on the first level only if there are at least 2 groups.\n      if (!option.parent && option.group && Object.keys(this.groups).length > 1) {\n        this.groups[option.group] ??= $createElement('optgroup')\n          .attr('label', option.group)\n          .appendTo($select);\n\n        // The group is no longer `undefined`.\n        // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n        // @ts-ignore\n        $option.appendTo(this.groups[option.group]);\n      } else {\n        $option.appendTo($select);\n      }\n\n      return $option;\n    }\n\n    /**\n     * Returns the value for a given `option` element.\n     */\n    protected getValue(value: string): string | string[] {\n      return this.isMultiple ? this.getLineage(value) : value;\n    }\n\n    /**\n     * Removes subsequent `select` elements after a given element.\n     */\n    protected removeSubsequentSelects($element: JQuery): void {\n      const $wrappers = $element.nextAll('.' + wrapperClass);\n      this.currentLevel -= $wrappers.length;\n\n      if ($wrappers.length) {\n        this.$element.trigger(jQuery.Event(`${pluginName}ChildrenDeleted`, { $wrappers }));\n      }\n\n      $wrappers.remove();\n    }\n\n    /**\n     * Returns the first found option with a given value.\n     */\n    protected getOptionByValue(value: string): Cshs.Option | undefined {\n      for (const option of this.options) {\n        if (option.value === value) {\n          return option;\n        }\n      }\n\n      return undefined;\n    }\n\n    /**\n     * Returns the options that are children of a given parent.\n     */\n    protected getChildren(parent: string | undefined): Cshs.Option[] {\n      return this.options.filter((option) => option.parent === parent);\n    }\n\n    /**\n     * Returns the values tree for a given value.\n     */\n    protected getLineage(value: string): string[] {\n      const parents: string[] = [value];\n\n      // eslint-disable-next-line no-constant-condition\n      while (true) {\n        if (value !== this.settings.noneValue) {\n          const option = this.getOptionByValue(value);\n\n          // Do not allow going beyond the configured root.\n          if (option?.parent && option.parent !== this.rootValue) {\n            parents.push(option.parent);\n\n            const child = this.getOptionByValue(option.parent);\n\n            if (child?.value) {\n              value = child.value;\n              continue;\n            }\n          }\n        }\n\n        break;\n      }\n\n      return parents;\n    }\n  }\n\n  $.fn[pluginName] = function (settings: Partial<Cshs.Settings>) {\n    return this.each((index, element) => {\n      if (!$.data(element, pluginId)) {\n        if (element instanceof HTMLSelectElement) {\n          $.data(element, pluginId, new ClientSideHierarchicalSelect(element, settings));\n        } else {\n          throw new Error(`The \"${element.id}\" must be an instance of HTMLSelectElement.`);\n        }\n      }\n    });\n  };\n})(jQuery, 'select-wrapper', 'simplerSelect');\n"],"sourceRoot":""}