Implement onPopupVisibilityChanged event

src/base-interfaces.ts

@@ -11,6 +11,7 @@ import { IAction } from "./actions/action";
 import { PanelModel } from "./panel";
 import { QuestionPanelDynamicModel } from "./question_paneldynamic";
 import { DragDropAllowEvent } from "./survey-events-api";
+import { PopupModel } from "./popup";
 
 export interface ISurveyData {
   getValue(name: string): any;
@@ -221,6 +222,7 @@ export interface ISurvey extends ITextProcessor, ISurveyErrorOwner {
   runExpression(expression: string): any;
   elementContentVisibilityChanged(element: ISurveyElement): void;
   onCorrectQuestionAnswer(question: IQuestion, options: any): void;
+  processPopupVisiblityChanged(question: IQuestion, popupModel: PopupModel, visible: boolean): void;
 }
 export interface ISurveyImpl {
   getSurveyData(): ISurveyData;

src/dropdownListModel.ts

@@ -113,6 +113,7 @@ export class DropdownListModel extends Base {
           this.resetItemsSettings();
         }
       }
+      this.question.processPopupVisiblilityChanged(this.popupModel, option.isVisible);
     });
   }
 

src/question.ts

@@ -18,6 +18,7 @@ import { RendererFactory } from "./rendererFactory";
 import { SurveyError } from "./survey-error";
 import { CssClassBuilder } from "./utils/cssClassBuilder";
 import { getElementWidth, increaseHeightByContent, isContainerVisible } from "./utils/utils";
+import { PopupModel } from "./popup";
 
 export interface IConditionObject {
   name: string;
@@ -2049,6 +2050,11 @@ export class Question extends SurveyElement<Question>
   getAllValues(): any {
     return !!this.data ? this.data.getAllValues() : null;
   }
+
+  public processPopupVisiblilityChanged(popupModel: PopupModel, visible: boolean): void {
+    this.survey.processPopupVisiblityChanged(this, popupModel, visible);
+  }
+
   public transformToMobileView(): void { }
   public transformToDesktopView(): void { }
   public needResponsiveWidth() {

src/survey-events-api.ts

@@ -4,6 +4,7 @@ import { IElement, ISurveyElement } from "./base-interfaces";
 import { ItemValue } from "./itemvalue";
 import { PageModel } from "./page";
 import { PanelModel, PanelModelBase } from "./panel";
+import { PopupModel } from "./popup";
 import { Question } from "./question";
 import { QuestionFileModel } from "./question_file";
 import { MatrixDropdownCell, MatrixDropdownRowModelBase, QuestionMatrixDropdownModelBase } from "./question_matrixdropdownbase";
@@ -855,3 +856,14 @@ export interface MatrixColumnAddedEvent extends QuestionEventMixin {
    */
   column: any;
 }
+
+export interface PopupVisibleChangedEvent extends QuestionEventMixin {
+  /**
+   * An object that describes the popup.
+   */
+  popup: PopupModel;
+  /**
+   * Indicates whether the popup is visible now.
+   */
+  visible: boolean;
+}

src/survey.ts

@@ -48,12 +48,13 @@ import { ActionContainer, defaultActionBarCss } from "./actions/container";
 import { CssClassBuilder } from "./utils/cssClassBuilder";
 import { QuestionPanelDynamicModel } from "./question_paneldynamic";
 import { Notifier } from "./notifier";
-import { TriggerExecutedEvent, CompletingEvent, CompleteEvent, ShowingPreviewEvent, NavigateToUrlEvent, CurrentPageChangingEvent, CurrentPageChangedEvent, ValueChangingEvent, ValueChangedEvent, VariableChangedEvent, QuestionVisibleChangedEvent, PageVisibleChangedEvent, PanelVisibleChangedEvent, QuestionCreatedEvent, QuestionAddedEvent, QuestionRemovedEvent, PanelAddedEvent, PanelRemovedEvent, PageAddedEvent, ValidateQuestionEvent, SettingQuestionErrorsEvent, ValidatePanelEvent, ErrorCustomTextEvent, ValidatedErrorsOnCurrentPageEvent, ProcessHtmlEvent, GetQuestionTitleEvent, GetTitleTagNameEvent, GetQuestionNoEvent, ProgressTextEvent, TextMarkdownEvent, TextRenderAsEvent, SendResultEvent, GetResultEvent, UploadFilesEvent, DownloadFileEvent, ClearFilesEvent, LoadChoicesFromServerEvent, ProcessTextValueEvent, UpdateQuestionCssClassesEvent, UpdatePanelCssClassesEvent, UpdatePageCssClassesEvent, UpdateChoiceItemCssEvent, AfterRenderSurveyEvent, AfterRenderHeaderEvent, AfterRenderPageEvent, AfterRenderQuestionEvent, AfterRenderQuestionInputEvent, AfterRenderPanelEvent, FocusInQuestionEvent, FocusInPanelEvent, ShowingChoiceItemEvent, ChoicesLazyLoadEvent, GetChoiceDisplayValueEvent, MatrixRowAddedEvent, MatrixBeforeRowAddedEvent, MatrixRowRemovingEvent, MatrixRowRemovedEvent, MatrixAllowRemoveRowEvent, MatrixCellCreatingEvent, MatrixCellCreatedEvent, MatrixAfterCellRenderEvent, MatrixCellValueChangedEvent, MatrixCellValueChangingEvent, MatrixCellValidateEvent, DynamicPanelModifiedEvent, DynamicPanelRemovingEvent, TimerPanelInfoTextEvent, DynamicPanelItemValueChangedEvent, IsAnswerCorrectEvent, DragDropAllowEvent, ScrollingElementToTopEvent, GetQuestionTitleActionsEvent, GetPanelTitleActionsEvent, GetPageTitleActionsEvent, GetPanelFooterActionsEvent, GetMatrixRowActionsEvent, ElementContentVisibilityChangedEvent, GetExpressionDisplayValueEvent, ServerValidateQuestionsEvent, MultipleTextItemAddedEvent, MatrixColumnAddedEvent, GetQuestionDisplayValueEvent } from "./survey-events-api";
+import { TriggerExecutedEvent, CompletingEvent, CompleteEvent, ShowingPreviewEvent, NavigateToUrlEvent, CurrentPageChangingEvent, CurrentPageChangedEvent, ValueChangingEvent, ValueChangedEvent, VariableChangedEvent, QuestionVisibleChangedEvent, PageVisibleChangedEvent, PanelVisibleChangedEvent, QuestionCreatedEvent, QuestionAddedEvent, QuestionRemovedEvent, PanelAddedEvent, PanelRemovedEvent, PageAddedEvent, ValidateQuestionEvent, SettingQuestionErrorsEvent, ValidatePanelEvent, ErrorCustomTextEvent, ValidatedErrorsOnCurrentPageEvent, ProcessHtmlEvent, GetQuestionTitleEvent, GetTitleTagNameEvent, GetQuestionNoEvent, ProgressTextEvent, TextMarkdownEvent, TextRenderAsEvent, SendResultEvent, GetResultEvent, UploadFilesEvent, DownloadFileEvent, ClearFilesEvent, LoadChoicesFromServerEvent, ProcessTextValueEvent, UpdateQuestionCssClassesEvent, UpdatePanelCssClassesEvent, UpdatePageCssClassesEvent, UpdateChoiceItemCssEvent, AfterRenderSurveyEvent, AfterRenderHeaderEvent, AfterRenderPageEvent, AfterRenderQuestionEvent, AfterRenderQuestionInputEvent, AfterRenderPanelEvent, FocusInQuestionEvent, FocusInPanelEvent, ShowingChoiceItemEvent, ChoicesLazyLoadEvent, GetChoiceDisplayValueEvent, MatrixRowAddedEvent, MatrixBeforeRowAddedEvent, MatrixRowRemovingEvent, MatrixRowRemovedEvent, MatrixAllowRemoveRowEvent, MatrixCellCreatingEvent, MatrixCellCreatedEvent, MatrixAfterCellRenderEvent, MatrixCellValueChangedEvent, MatrixCellValueChangingEvent, MatrixCellValidateEvent, DynamicPanelModifiedEvent, DynamicPanelRemovingEvent, TimerPanelInfoTextEvent, DynamicPanelItemValueChangedEvent, IsAnswerCorrectEvent, DragDropAllowEvent, ScrollingElementToTopEvent, GetQuestionTitleActionsEvent, GetPanelTitleActionsEvent, GetPageTitleActionsEvent, GetPanelFooterActionsEvent, GetMatrixRowActionsEvent, ElementContentVisibilityChangedEvent, GetExpressionDisplayValueEvent, ServerValidateQuestionsEvent, MultipleTextItemAddedEvent, MatrixColumnAddedEvent, GetQuestionDisplayValueEvent, PopupVisibleChangedEvent } from "./survey-events-api";
 import { QuestionMatrixDropdownModelBase } from "./question_matrixdropdownbase";
 import { QuestionMatrixDynamicModel } from "./question_matrixdynamic";
 import { QuestionFileModel } from "./question_file";
 import { QuestionMultipleTextModel } from "./question_multipletext";
 import { ITheme } from "./themes";
+import { PopupModel } from "./popup";
 
 /**
  * The `SurveyModel` object contains properties and methods that allow you to control the survey and access its elements.
@@ -759,6 +760,11 @@ export class SurveyModel extends SurveyElementCore
    */
   public onGetExpressionDisplayValue: EventBase<SurveyModel, GetExpressionDisplayValueEvent> = this.addEvent<SurveyModel, GetExpressionDisplayValueEvent>();
 
+  /**
+   * An event that is raised after the visibility of a popup is changed. This event can be raised for [Single-](https://surveyjs.io/form-library/documentation/api-reference/dropdown-menu-model) and [Multi-Select Dropdown](https://surveyjs.io/form-library/documentation/api-reference/dropdown-tag-box-model) questions and [Rating](https://surveyjs.io/form-library/documentation/api-reference/rating-scale-question-model) questions [rendered as drop-down menus](https://surveyjs.io/form-library/documentation/api-reference/rating-scale-question-model#displayMode).
+   */
+  public onPopupVisibleChanged: EventBase<SurveyModel, PopupVisibleChangedEvent> = this.addEvent<SurveyModel, PopupVisibleChangedEvent>();
+
   //#endregion
 
   constructor(jsonObj: any = null, renderedElement: any = null) {
@@ -929,6 +935,9 @@ export class SurveyModel extends SurveyElementCore
       data: this.navigationBar
     });
   }
+  processClosedPopup(question: IQuestion, popupModel: PopupModel<any>): void {
+    throw new Error("Method not implemented.");
+  }
   protected createTryAgainAction(): IAction {
     return <IAction>{
       id: "save-again",
@@ -6979,6 +6988,9 @@ export class SurveyModel extends SurveyElementCore
     }
     return containerLayoutElements;
   }
+  public processPopupVisiblityChanged(question: Question, popup: PopupModel<any>, visible: boolean): void {
+    this.onPopupVisibleChanged.fire(this, { question, popup, visible });
+  }
 
   public applyTheme(theme: ITheme): void {
     if(!theme) return;

tests/surveytests.ts

@@ -17117,3 +17117,28 @@ QUnit.test("Expression with dates & defaultValueExpression & expression question
   startQ.value = Helpers.convertDateToString(new Date());
   checkFunc([true, true, false, false, true], 3);
 });
+
+QUnit.test("Check onPopupVisibleChanged events", function (assert) {
+  const survey = new SurveyModel({
+    elements: [
+      {
+        "type": "dropdown",
+        "name": "q1",
+        "choices": ["Item1", "Item2", "Item3"]
+      },
+    ]
+  });
+  let log = "";
+  const question = <QuestionDropdownModel>survey.getAllQuestions()[0];
+  const popup = question.dropdownListModel.popupModel;
+  survey.onPopupVisibleChanged.add((_, options) => {
+    assert.equal(options.question, question);
+    assert.equal(options.popup, popup);
+    log += `->${options.visible}`;
+  });
+  popup.toggleVisibility();
+  assert.equal(log, "->true");
+  popup.toggleVisibility();
+  assert.equal(log, "->true->false");
+});
+