Add setting a modidied flag for indirect arrays

DEVSIX-3452

Autoported commit.
Original commit hash: [d8ecda465]

Author: ar3em

itext.tests/itext.forms.tests/itext/forms/PdfAcroFormInAppendModeTest.cs

@@ -29,24 +29,30 @@ You should have received a copy of the GNU Affero General Public License
 
 namespace iText.Forms {
     public class PdfAcroFormInAppendModeTest : ExtendedITextTest {
+        private const String testFolder = "PdfAcroFormInAppendModeTest/";
+
         private static readonly String destinationFolder = NUnit.Framework.TestContext.CurrentContext.TestDirectory
-             + "/test/itext/forms/PdfAcroFormInAppendModeTest/";
+             + "/test/itext/forms/" + testFolder;
 
         private static readonly String sourceFolder = iText.Test.TestUtil.GetParentProjectDirectory(NUnit.Framework.TestContext
-            .CurrentContext.TestDirectory) + "/resources/itext/forms/PdfAcroFormInAppendModeTest/";
+            .CurrentContext.TestDirectory) + "/resources/itext/forms/" + testFolder;
 
         private static readonly String inputFile = destinationFolder + "inputFile.pdf";
 
+        private static readonly String inputFileWithIndirectFieldsArray = destinationFolder + "inputFileWithIndirectFieldsArray.pdf";
+
         [NUnit.Framework.OneTimeSetUp]
         public static void BeforeClass() {
             CreateDestinationFolder(destinationFolder);
             CreateInputFile();
+            CreateInputFileWithIndirectFieldsArray();
         }
 
         [NUnit.Framework.Test]
-        public virtual void CreateFieldInAppendModeTest() {
-            String outputFile = "createFieldInAppendModeTest.pdf";
-            PdfDocument outputDoc = CreateDocInAppendMode(destinationFolder + outputFile);
+        public virtual void AddFieldTest() {
+            String outputFile = "addFieldTest.pdf";
+            PdfDocument outputDoc = new PdfDocument(new PdfReader(inputFile), new PdfWriter(destinationFolder + outputFile
+                ), new StampingProperties().UseAppendMode());
             PdfFormField field = PdfFormField.CreateCheckBox(outputDoc, new Rectangle(10, 10, 24, 24), "checkboxname", 
                 "On", PdfFormField.TYPE_CHECK);
             PdfAcroForm.GetAcroForm(outputDoc, true).AddField(field);
@@ -55,18 +61,19 @@ public virtual void CreateFieldInAppendModeTest() {
         }
 
         [NUnit.Framework.Test]
-        public virtual void RemoveFieldInAppendModeTest() {
-            String outputFile = "removeFieldInAppendModeTest.pdf";
-            PdfDocument outputDoc = CreateDocInAppendMode(destinationFolder + outputFile);
+        public virtual void RemoveFieldTest() {
+            String outputFile = "removeFieldTest.pdf";
+            PdfDocument outputDoc = new PdfDocument(new PdfReader(inputFile), new PdfWriter(destinationFolder + outputFile
+                ), new StampingProperties().UseAppendMode());
             PdfAcroForm.GetAcroForm(outputDoc, true).RemoveField("textfield2");
             outputDoc.Close();
             CompareWithCmp(outputFile);
         }
 
         [NUnit.Framework.Test]
-        public virtual void RemoveFieldWithParentInAppendModeTest() {
+        public virtual void RemoveKidTest() {
             // Creating input document
-            String inputFile = "inputRemoveFieldWithParentInAppendModeTest.pdf";
+            String inputFile = "in_removeKidTest.pdf";
             PdfDocument inDoc = new PdfDocument(new PdfWriter(destinationFolder + inputFile));
             inDoc.AddNewPage();
             PdfFormField root = PdfFormField.CreateEmptyField(inDoc);
@@ -77,7 +84,7 @@ public virtual void RemoveFieldWithParentInAppendModeTest() {
             PdfAcroForm.GetAcroForm(inDoc, true).AddField(root);
             inDoc.Close();
             // Creating stamping document
-            String outputFile = "removeFieldWithParentInAppendModeTest.pdf";
+            String outputFile = "removeKidTest.pdf";
             PdfReader reader = new PdfReader(destinationFolder + inputFile);
             PdfWriter writer = new PdfWriter(destinationFolder + outputFile);
             PdfDocument outputDoc = new PdfDocument(reader, writer, new StampingProperties().UseAppendMode());
@@ -87,16 +94,65 @@ public virtual void RemoveFieldWithParentInAppendModeTest() {
         }
 
         [NUnit.Framework.Test]
-        public virtual void ReplaceFieldInAppendModeTest() {
-            String outputFile = "replaceFieldInAppendModeTest.pdf";
-            PdfDocument outputDoc = CreateDocInAppendMode(destinationFolder + outputFile);
+        public virtual void ReplaceFieldTest() {
+            String outputFile = "replaceFieldTest.pdf";
+            PdfDocument outputDoc = new PdfDocument(new PdfReader(inputFile), new PdfWriter(destinationFolder + outputFile
+                ), new StampingProperties().UseAppendMode());
             PdfFormField newField = PdfFormField.CreateText(outputDoc, new Rectangle(20, 160, 100, 20), "newfield", "new field"
                 );
             PdfAcroForm.GetAcroForm(outputDoc, true).ReplaceField("textfield1", newField);
             outputDoc.Close();
             CompareWithCmp(outputFile);
         }
 
+        [NUnit.Framework.Test]
+        public virtual void AddFieldToIndirectFieldsArrayTest() {
+            String outputFile = "addFieldToIndirectFieldsArrayTest.pdf";
+            PdfDocument document = new PdfDocument(new PdfReader(inputFileWithIndirectFieldsArray), new PdfWriter(destinationFolder
+                 + outputFile), new StampingProperties().UseAppendMode());
+            PdfFormField field = PdfFormField.CreateCheckBox(document, new Rectangle(10, 10, 24, 24), "checkboxname", 
+                "On", PdfFormField.TYPE_CHECK);
+            // Get an existing acroform and add new field to it
+            PdfAcroForm.GetAcroForm(document, false).AddField(field);
+            document.Close();
+            CompareWithCmp(outputFile);
+        }
+
+        [NUnit.Framework.Test]
+        public virtual void RemoveFieldFromIndirectFieldsArrayTest() {
+            String outputFile = "removeFieldFromIndirectFieldsArrayTest.pdf";
+            PdfDocument outputDoc = new PdfDocument(new PdfReader(inputFileWithIndirectFieldsArray), new PdfWriter(destinationFolder
+                 + outputFile), new StampingProperties().UseAppendMode());
+            PdfAcroForm.GetAcroForm(outputDoc, true).RemoveField("textfield2");
+            outputDoc.Close();
+            CompareWithCmp(outputFile);
+        }
+
+        [NUnit.Framework.Test]
+        public virtual void RemoveKidFromIndirectKidsArrayTest() {
+            String inputFile = "in_removeKidFromIndirectKidsArrayTest.pdf";
+            String outputFile = "removeKidFromIndirectKidsArrayTest.pdf";
+            // Creating input document
+            PdfDocument inDoc = new PdfDocument(new PdfWriter(destinationFolder + inputFile));
+            inDoc.AddNewPage();
+            PdfFormField root = PdfFormField.CreateEmptyField(inDoc);
+            root.SetFieldName("root");
+            PdfFormField child = PdfFormField.CreateEmptyField(inDoc);
+            child.SetFieldName("child");
+            root.AddKid(child);
+            PdfAcroForm.GetAcroForm(inDoc, true).AddField(root);
+            // make kids array indirect
+            PdfAcroForm.GetAcroForm(inDoc, true).GetField("root").GetKids().MakeIndirect(inDoc);
+            inDoc.Close();
+            // Creating stamping document
+            PdfReader reader = new PdfReader(destinationFolder + inputFile);
+            PdfWriter writer = new PdfWriter(destinationFolder + outputFile);
+            PdfDocument outputDoc = new PdfDocument(reader, writer, new StampingProperties().UseAppendMode());
+            PdfAcroForm.GetAcroForm(outputDoc, true).RemoveField("root.child");
+            outputDoc.Close();
+            CompareWithCmp(outputFile);
+        }
+
         private static void CreateInputFile() {
             PdfDocument document = new PdfDocument(new PdfWriter(inputFile));
             document.AddNewPage();
@@ -107,10 +163,16 @@ private static void CreateInputFile() {
             document.Close();
         }
 
-        private static PdfDocument CreateDocInAppendMode(String outFile) {
-            PdfReader reader = new PdfReader(inputFile);
-            PdfWriter writer = new PdfWriter(outFile);
-            return new PdfDocument(reader, writer, new StampingProperties().UseAppendMode());
+        private static void CreateInputFileWithIndirectFieldsArray() {
+            PdfDocument document = new PdfDocument(new PdfWriter(inputFileWithIndirectFieldsArray));
+            document.AddNewPage();
+            PdfAcroForm acroForm = PdfAcroForm.GetAcroForm(document, true);
+            acroForm.GetFields().MakeIndirect(document);
+            acroForm.AddField(PdfFormField.CreateText(document, new Rectangle(20, 160, 100, 20), "textfield1", "text1"
+                ));
+            acroForm.AddField(PdfFormField.CreateText(document, new Rectangle(20, 130, 100, 20), "textfield2", "text2"
+                ));
+            document.Close();
         }
 
         private static void CompareWithCmp(String outputFile) {