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'styling/_DidYouMean';\nimport * as _ from 'underscore';\nimport { exportGlobally } from '../../GlobalExports';\nimport { IBuildingQueryEventArgs, INoResultsEventArgs, IQuerySuccessEventArgs, QueryEvents } from '../../events/QueryEvents';\nimport { Assert } from '../../misc/Assert';\nimport { QueryStateModel } from '../../models/QueryStateModel';\nimport { IQueryCorrection } from '../../rest/QueryCorrection';\nimport { l } from '../../strings/Strings';\nimport { $$ } from '../../utils/Dom';\nimport { StringUtils } from '../../utils/StringUtils';\nimport { Utils } from '../../utils/Utils';\nimport { IAnalyticsNoMeta, analyticsActionCauseList } from '../Analytics/AnalyticsActionListMeta';\nimport { Component } from '../Base/Component';\nimport { IComponentBindings } from '../Base/ComponentBindings';\nimport { ComponentOptions } from '../Base/ComponentOptions';\nimport { Initialization } from '../Base/Initialization';\n\nexport interface IDidYouMeanOptions {\n  enableAutoCorrection?: boolean;\n}\n\n/**\n * The DidYouMean component is responsible for displaying query corrections. If this component is in the page and the\n * query returns no result but finds a possible query correction, the component either suggests the correction or\n * automatically triggers a new query with the suggested term.\n */\nexport class DidYouMean extends Component {\n  static ID = 'DidYouMean';\n\n  static doExport = () => {\n    exportGlobally({\n      DidYouMean: DidYouMean\n    });\n  };\n\n  /**\n   * The options for the component\n   * @componentOptions\n   */\n  static options: IDidYouMeanOptions = {\n    /**\n     * Specifies whether the DidYouMean component automatically triggers a new query when a query returns no result and\n     * a possible correction is available.\n     *\n     * Default value is `true`.\n     */\n    enableAutoCorrection: ComponentOptions.buildBooleanOption({ defaultValue: true })\n  };\n\n  public correctedTerm: string;\n\n  private hideNext: boolean;\n\n  private ignoreNextNoResults: boolean;\n\n  /**\n   * Creates a new DidYouMean component.\n   * @param element The HTMLElement on which to instantiate the component.\n   * @param options The options for the DidYouMean component.\n   * @param bindings The bindings that the component requires to function normally. If not set, these will be\n   * automatically resolved (with a slower execution time).\n   */\n  constructor(public element: HTMLElement, public options?: IDidYouMeanOptions, public bindings?: IComponentBindings) {\n    super(element, DidYouMean.ID, bindings);\n\n    this.options = ComponentOptions.initComponentOptions(element, DidYouMean, options);\n    Assert.exists(element);\n    Assert.exists(this.options);\n\n    this.hideNext = true;\n\n    this.ignoreNextNoResults = false;\n\n    this.correctedTerm = null;\n\n    this.bind.onRootElement(QueryEvents.buildingQuery, this.handlePrepareQueryBuilder);\n    this.bind.onRootElement(QueryEvents.querySuccess, this.handleProcessNewQueryResults);\n    this.bind.onRootElement(QueryEvents.noResults, this.handleNoResults);\n    this.bind.onRootElement(QueryEvents.newQuery, this.handleNewQuery);\n    $$(this.element).hide();\n  }\n\n  /**\n   * Executes a query with the corrected term.\n   * Throws an exception if the corrected term has not been initialized.\n   * If successful, logs a `didyoumeanClick` event in the usage analytics.\n   */\n  public doQueryWithCorrectedTerm() {\n    Assert.exists(this.correctedTerm);\n    this.queryStateModel.set(QueryStateModel.attributesEnum.q, this.correctedTerm);\n    this.queryController.deferExecuteQuery({\n      beforeExecuteQuery: () => this.usageAnalytics.logSearchEvent<IAnalyticsNoMeta>(analyticsActionCauseList.didyoumeanClick, {})\n    });\n  }\n\n  private handleNewQuery() {\n    if (this.hideNext) {\n      $$(this.element).empty();\n      $$(this.element).hide();\n      this.correctedTerm = null;\n    } else {\n      this.hideNext = true;\n    }\n  }\n\n  private handlePrepareQueryBuilder(data: IBuildingQueryEventArgs) {\n    Assert.exists(data);\n    data.queryBuilder.enableDidYouMean = true;\n  }\n\n  private handleNoResults(data: INoResultsEventArgs) {\n    if (this.ignoreNextNoResults) {\n      this.logger.warn('Query is being automatically corrected twice while returning no results.');\n      return;\n    }\n\n    // We do not auto-correct on search-as-you-type queries\n    if (Utils.isNonEmptyArray(data.results.queryCorrections) && !data.searchAsYouType && this.options.enableAutoCorrection) {\n      this.ignoreNextNoResults = true;\n      let originalQuery = this.queryStateModel.get(QueryStateModel.attributesEnum.q);\n      this.correctedTerm = data.results.queryCorrections[0].correctedQuery;\n      let correctedSentence = this.buildCorrectedSentence(data.results.queryCorrections[0]);\n      this.queryStateModel.set(QueryStateModel.attributesEnum.q, data.results.queryCorrections[0].correctedQuery);\n      this.searchInterface.historyManager.replaceState(this.queryStateModel.getAttributes());\n      data.retryTheQuery = true;\n      this.hideNext = false;\n\n      let noResultsFor = $$('div', { className: 'coveo-did-you-mean-no-results-for' }).el;\n      noResultsFor.innerHTML = l(\n        'noResultFor',\n        '<span class=\"coveo-highlight coveo-did-you-mean-highlight\">' + StringUtils.htmlEncode(originalQuery) + '</span>'\n      );\n      this.element.appendChild(noResultsFor);\n\n      let automaticCorrect = $$('div', { className: 'coveo-did-you-mean-automatic-correct' }).el;\n      automaticCorrect.innerHTML = l('autoCorrectedQueryTo', '<span class=\"coveo-highlight\">' + correctedSentence + '</span>');\n      this.element.appendChild(automaticCorrect);\n\n      $$(this.element).show();\n      this.usageAnalytics.logSearchEvent<IAnalyticsNoMeta>(analyticsActionCauseList.didyoumeanAutomatic, {});\n    }\n  }\n\n  private handleProcessNewQueryResults(data: IQuerySuccessEventArgs) {\n    Assert.exists(data);\n    Assert.exists(data.results);\n    this.ignoreNextNoResults = false;\n\n    let results = data.results;\n    this.logger.trace('Received query results from new query', results);\n\n    if (Utils.isNonEmptyArray(results.queryCorrections)) {\n      const correctedSentence = this.buildCorrectedSentence(results.queryCorrections[0]);\n      this.correctedTerm = results.queryCorrections[0].correctedQuery;\n\n      const correctedWordEl = $$('button', { type: 'button' }, correctedSentence).el;\n      const didYouMean = $$('div', { className: 'coveo-did-you-mean-suggestion' }, l('didYouMean', correctedWordEl.outerHTML));\n      this.element.appendChild(didYouMean.el);\n\n      const appendedCorrectedWordEl = didYouMean.find(correctedWordEl.tagName);\n      $$(appendedCorrectedWordEl).on('click', () => this.doQueryWithCorrectedTerm());\n\n      $$(this.element).show();\n    }\n  }\n\n  private buildCorrectedSentence(correction: IQueryCorrection) {\n    let toReturn = [];\n    let tagStart = \"<span class='coveo-did-you-mean-word-correction'>\";\n    let tagEnd = '</span>';\n    let currentOffset = 0;\n    _.each(correction.wordCorrections, wordCorrection => {\n      toReturn.push(StringUtils.htmlEncode(correction.correctedQuery.slice(currentOffset, 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