From 39f59547296a7c97597f3688e149c4f34785b419 Mon Sep 17 00:00:00 2001
From: Calixte Denizet <calixte.denizet@gmail.com>
Date: Tue, 3 Nov 2020 16:53:21 +0100
Subject: [PATCH] JS -- Add default value in annotation data  * these values
 are used when a form is resetted

---
 src/core/annotation.js       | 10 ++++++++++
 test/unit/annotation_spec.js | 11 +++++++++++
 2 files changed, 21 insertions(+)

diff --git a/src/core/annotation.js b/src/core/annotation.js
index 3241152d76882..f609159437e4b 100644
--- a/src/core/annotation.js
+++ b/src/core/annotation.js
@@ -951,6 +951,13 @@ class WidgetAnnotation extends Annotation {
     });
     data.fieldValue = this._decodeFormValue(fieldValue);
 
+    const defaultFieldValue = getInheritableProperty({
+      dict,
+      key: "DV",
+      getArray: true,
+    });
+    data.defaultFieldValue = this._decodeFormValue(defaultFieldValue);
+
     data.alternativeText = stringToPDFString(dict.get("TU") || "");
     data.defaultAppearance =
       getInheritableProperty({ dict, key: "DA" }) ||
@@ -1652,6 +1659,7 @@ class TextWidgetAnnotation extends WidgetAnnotation {
     return {
       id: this.data.id,
       value: this.data.fieldValue,
+      defaultValue: this.data.defaultFieldValue,
       multiline: this.data.multiLine,
       password: this.hasFieldFlag(AnnotationFieldFlag.PASSWORD),
       charLimit: this.data.maxLen,
@@ -1976,6 +1984,7 @@ class ButtonWidgetAnnotation extends WidgetAnnotation {
     return {
       id: this.data.id,
       value,
+      defaultValue: this.data.defaultFieldValue,
       editable: !this.data.readOnly,
       name: this.data.fieldName,
       rect: this.data.rect,
@@ -2052,6 +2061,7 @@ class ChoiceWidgetAnnotation extends WidgetAnnotation {
     return {
       id: this.data.id,
       value,
+      defaultValue: this.data.defaultFieldValue,
       editable: !this.data.readOnly,
       name: this.data.fieldName,
       rect: this.data.rect,
diff --git a/test/unit/annotation_spec.js b/test/unit/annotation_spec.js
index d212c467e338e..79b7708ce34d0 100644
--- a/test/unit/annotation_spec.js
+++ b/test/unit/annotation_spec.js
@@ -1421,6 +1421,8 @@ describe("annotation", function () {
     });
 
     it("should handle unknown text alignment, maximum length and flags", function (done) {
+      textWidgetDict.set("DV", "foo");
+
       const textWidgetRef = Ref.get(124, 0);
       const xref = new XRefMock([{ ref: textWidgetRef, data: textWidgetDict }]);
 
@@ -1437,6 +1439,7 @@ describe("annotation", function () {
         expect(data.hidden).toEqual(false);
         expect(data.multiLine).toEqual(false);
         expect(data.comb).toEqual(false);
+        expect(data.defaultFieldValue).toEqual("foo");
         done();
       }, done.fail);
     });
@@ -2021,6 +2024,7 @@ describe("annotation", function () {
 
     it("should handle checkboxes with export value", function (done) {
       buttonWidgetDict.set("V", Name.get("1"));
+      buttonWidgetDict.set("DV", Name.get("2"));
 
       const appearanceStatesDict = new Dict();
       const normalAppearanceDict = new Dict();
@@ -2044,6 +2048,7 @@ describe("annotation", function () {
         expect(data.annotationType).toEqual(AnnotationType.WIDGET);
         expect(data.checkBox).toEqual(true);
         expect(data.fieldValue).toEqual("1");
+        expect(data.defaultFieldValue).toEqual("2");
         expect(data.radioButton).toEqual(false);
         expect(data.exportValue).toEqual("Checked");
         done();
@@ -2052,6 +2057,7 @@ describe("annotation", function () {
 
     it("should handle checkboxes without export value", function (done) {
       buttonWidgetDict.set("V", Name.get("1"));
+      buttonWidgetDict.set("DV", Name.get("2"));
 
       const buttonWidgetRef = Ref.get(124, 0);
       const xref = new XRefMock([
@@ -2067,6 +2073,7 @@ describe("annotation", function () {
         expect(data.annotationType).toEqual(AnnotationType.WIDGET);
         expect(data.checkBox).toEqual(true);
         expect(data.fieldValue).toEqual("1");
+        expect(data.defaultFieldValue).toEqual("2");
         expect(data.radioButton).toEqual(false);
         done();
       }, done.fail);
@@ -2074,6 +2081,7 @@ describe("annotation", function () {
 
     it("should handle checkboxes without /Off appearance", function (done) {
       buttonWidgetDict.set("V", Name.get("1"));
+      buttonWidgetDict.set("DV", Name.get("2"));
 
       const appearanceStatesDict = new Dict();
       const normalAppearanceDict = new Dict();
@@ -2096,6 +2104,7 @@ describe("annotation", function () {
         expect(data.annotationType).toEqual(AnnotationType.WIDGET);
         expect(data.checkBox).toEqual(true);
         expect(data.fieldValue).toEqual("1");
+        expect(data.defaultFieldValue).toEqual("2");
         expect(data.radioButton).toEqual(false);
         expect(data.exportValue).toEqual("Checked");
         done();
@@ -3093,6 +3102,7 @@ describe("annotation", function () {
 
       choiceWidgetDict.set("Opt", [encodedString]);
       choiceWidgetDict.set("V", encodedString);
+      choiceWidgetDict.set("DV", Name.get("foo"));
 
       const choiceWidgetRef = Ref.get(984, 0);
       const xref = new XRefMock([
@@ -3107,6 +3117,7 @@ describe("annotation", function () {
       ).then(({ data }) => {
         expect(data.annotationType).toEqual(AnnotationType.WIDGET);
         expect(data.fieldValue).toEqual([decodedString]);
+        expect(data.defaultFieldValue).toEqual("foo");
         expect(data.options).toEqual([
           { exportValue: decodedString, displayValue: decodedString },
         ]);