html & image questions should not be shown in tabulator column by def…

…ault fix #455

src/tables/table.ts

@@ -1,4 +1,4 @@
-import { SurveyModel, Question, Event, settings, QuestionSelectBase, QuestionMatrixModel, ItemValue, JsonError, EventBase } from "survey-core";
+import { SurveyModel, Question, Event, Serializer, EventBase } from "survey-core";
 import * as SurveyCore from "survey-core";
 import {
   IPermission,
@@ -172,11 +172,16 @@ export abstract class Table {
   protected buildColumns = (survey: SurveyModel) => {
     let columns: Array<IColumn> = [];
     this._survey.getAllQuestions().forEach((question: Question) => {
-      const builder = ColumnsBuilderFactory.Instance.getColumnsBuilder(question.getTemplate());
-      columns = columns.concat(builder.buildColumns(question, this));
+      if(!this.isNonValueQuestion(question)) {
+        const builder = ColumnsBuilderFactory.Instance.getColumnsBuilder(question.getTemplate());
+        columns = columns.concat(builder.buildColumns(question, this));
+      }
     });
     return columns;
   };
+  private isNonValueQuestion(question: Question): boolean {
+    return Serializer.isDescendantOf(question.getType(), "nonvalue");
+  }
 
   public isColumnVisible(column: IColumn) {
     if (column.location !== QuestionLocation.Column) return false;

tests/tables/tables.test.ts

@@ -274,6 +274,34 @@ test("check columns for question with comment", () => {
   expect(<any>table.columns[1].dataType).toEqual(ColumnDataType.Text);
 });
 
+test("do not create columns for html and image questions", () => {
+  const json = {
+    questions: [
+      {
+        type: "text",
+        name: "q1"
+      },
+      {
+        type: "html",
+        name: "q2"
+      },
+      {
+        type: "image",
+        name: "q3"
+      },
+      {
+        type: "text",
+        name: "q4"
+      },
+    ],
+  };
+  const survey = new SurveyModel(json);
+  const table = new TableTest(survey, [], {}, []);
+  expect((<any>table).columns).toHaveLength(2);
+  expect((<any>table).columns[0].name).toEqual("q1");
+  expect((<any>table).columns[1].name).toEqual("q4");
+});
+
 test("check columns for question with other and storeOthersAsComment: true", () => {
   const json = {
     questions: [