From 964e63ddbf6dd3d375c6bfc21ff46d54b9f54cb4 Mon Sep 17 00:00:00 2001
From: Andrew <andrew.telnov@gmail.com>
Date: Sat, 16 Sep 2023 19:20:05 +0300
Subject: [PATCH] Pre-processing translation strings stop working in
 v1.9.106/107 fix #6967 (#6968)

---
 src/survey.ts        | 16 ++++++++++------
 tests/surveytests.ts | 14 ++++++++++++++
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/src/survey.ts b/src/survey.ts
index 406dbff454..bf0e8c7c8b 100644
--- a/src/survey.ts
+++ b/src/survey.ts
@@ -128,8 +128,6 @@ export class SurveyModel extends SurveyElementCore
   private variablesHash: HashTable<any> = {};
   private editingObjValue: Base;
 
-  private textPreProcessor: TextPreProcessor;
-
   private timerModelValue: SurveyTimerModel;
 
   private navigationBarValue: ActionContainer;
@@ -827,10 +825,6 @@ export class SurveyModel extends SurveyElementCore
     this.createLocalizableString("editText", this, false, true);
     this.createLocalizableString("questionTitleTemplate", this, true);
 
-    this.textPreProcessor = new TextPreProcessor();
-    this.textPreProcessor.onProcess = (textValue: TextPreProcessorValue) => {
-      this.getProcessedTextValue(textValue);
-    };
     this.timerModelValue = new SurveyTimerModel(this);
     this.timerModelValue.onTimer = (page: PageModel): void => {
       this.doTimer(page);
@@ -6596,6 +6590,16 @@ export class SurveyModel extends SurveyElementCore
     res.hasAllValuesOnLastRun = this.textPreProcessor.hasAllValuesOnLastRun;
     return res;
   }
+  private textPreProcessorValue: TextPreProcessor;
+  private get textPreProcessor(): TextPreProcessor {
+    if(!this.textPreProcessorValue) {
+      this.textPreProcessorValue = new TextPreProcessor();
+      this.textPreProcessorValue.onProcess = (textValue: TextPreProcessorValue) => {
+        this.getProcessedTextValue(textValue);
+      };
+    }
+    return this.textPreProcessorValue;
+  }
   private processTextCore(
     text: string,
     returnDisplayValue: boolean,
diff --git a/tests/surveytests.ts b/tests/surveytests.ts
index edb175f0a2..32e4b3e723 100644
--- a/tests/surveytests.ts
+++ b/tests/surveytests.ts
@@ -17872,3 +17872,17 @@ QUnit.test("Test propertyValue() function", function (assert) {
     q2: [{ q2_q1_exp: "Q2_Q1" }],
     q3: [{ col1_exp: "Column 1" }] }, "propertyValue works correctly");
 });
+QUnit.test("Error on pre-processing localizable string Bug#6967", function (assert) {
+  const prevVal = surveyLocalization.locales.en.completeText;
+  surveyLocalization.locales.en.completeText = "{q1}";
+  const survey = new SurveyModel({
+    elements: [
+      {
+        type: "text",
+        name: "q1"
+      }]
+  });
+  survey.data = { q1: 2 };
+  assert.equal(survey.locCompleteText.renderedHtml, "2", "Preprocess correctly");
+  surveyLocalization.locales.en.completeText = prevVal;
+});