improve code to prevent default trim of existent leading whitespaces; correct...

improve code to prevent default trim of existent leading whitespaces; correct if-clause, under which Target.Paragraphs[count] should be writen to the document

pdf-generator/EvaluationReport/Appendix.cs

@@ -46,6 +46,11 @@ namespace PDFGenerator.EvaluationReport
         /// </summary>
         public override void Render()
         {
+            if (PDFAppendix.Attachments.Count == 0)
+            {
+                return;
+            }
+
             Bookmarks.AddRootOutline(PDFAppendix.Heading, RootOutline);
 
             TocItem tocItem = new TocItem

pdf-generator/EvaluationReport/BaseSection.cs

@@ -10,6 +10,7 @@ using PDFGenerator.Models;
 using PDFGenerator.Utilities;
 using System.Collections.Generic;
 using System.IO;
+using System.Text.RegularExpressions;
 using static PDFGenerator.Utilities.Globals;
 
 namespace PDFGenerator.EvaluationReport
@@ -192,6 +193,17 @@ namespace PDFGenerator.EvaluationReport
             Document.Add(ParagraphFactory.GetTableHeaderParagraph(string.Empty));
         }
 
+        /// <summary>
+        /// Prevents the default trim of existent leading whitespaces at the string beginning and immediately after a linebreak on iText7,
+        /// by adding a NULL character ('\u0000')
+        /// </summary>
+        /// <param name="text">input text</param>
+        /// <returns>text with preserved leading whitespaces</returns>
+        protected string PreserveLeadingSpaces(string text)
+        {
+            return "\u0000" + Regex.Replace(text, @"\n", "\n\u0000");
+        }
+
         /// <summary>
         /// Adds page break to document.
         /// </summary>

pdf-generator/EvaluationReport/CriterionTarget.cs

@@ -67,7 +67,7 @@ namespace PDFGenerator.EvaluationReport
 
 
             style.SetFontColor(ColorConstants.BLACK);
-            if (!Target.Selected && (count < Target.Paragraphs.Count))
+            if (!Target.Selected && Target.EvaluatedCriterions == null && (count < Target.Paragraphs.Count))
             {
                 Document.Add(new Paragraph(new Text(Target.Paragraphs[count++]).AddStyle(style))
                     .Add(NewLine)
@@ -91,7 +91,7 @@ namespace PDFGenerator.EvaluationReport
                         }
 
                         // avoid that existent multiple white spaces immediately after a line break are ignored from iText7
-                        Document.Add(ParagraphFactory.GetStandardParagraph(item.Description.Replace(' ', '\u00A0')));
+                        Document.Add(ParagraphFactory.GetStandardParagraph(PreserveLeadingSpaces(item.Description)));
                     }
                 });
 
@@ -109,7 +109,7 @@ namespace PDFGenerator.EvaluationReport
                             Document.Add(ParagraphFactory.GetCustomParagraph(item.CourseName, Styles.H5, 5f, 5f, 1.15f));
                         }
 
-                        Document.Add(ParagraphFactory.GetStandardParagraph(item.Comment.Replace(' ', '\u00A0')));
+                        Document.Add(ParagraphFactory.GetStandardParagraph(PreserveLeadingSpaces(item.Comment)));
                     }
                 });
             }

pdf-generator/EvaluationReport/KpiEvaluation.cs

@@ -35,7 +35,8 @@ namespace PDFGenerator.EvaluationReport
                 style.SetFontColor(new DeviceRgb(156, 158, 159));
             }
 
-            Table = new Table(1, false).UseAllAvailableWidth()
+            Table = new Table(1, false)
+            .UseAllAvailableWidth()
             .SetKeepTogether(false);
 
             AddParagraphWithLeadingToTable(Table, Evaluation.TableHeader, true, style);
@@ -72,23 +73,21 @@ namespace PDFGenerator.EvaluationReport
             {
                 if (!string.IsNullOrEmpty(item.Paragraph))
                 {
+                    Cell cell = new Cell().SetBorder(Border.NO_BORDER);
+                    DeviceRgb color;
                     if (item.IsReached)
                     {
-                        Table.AddCell(
-                            Panel.GetPanel(
-                                // avoid trim of whitespaces immediately after line break (iText7 problem)
-                                new Paragraph(new Text(item.Paragraph.Replace(' ', '\u00A0')).AddStyle(Styles.Paragraph)), new DeviceRgb(221, 235, 206)
-                            )
-                        );
+                        color = new DeviceRgb(221, 235, 206);
                     }
                     else
                     {
-                        Table.AddCell(
-                            Panel.GetPanel(
-                                new Paragraph(new Text(item.Paragraph.Replace(' ', '\u00A0')).AddStyle(Styles.Paragraph)), new DeviceRgb(249, 210, 218)
-                            )
-                        );
+                        color = new DeviceRgb(249, 210, 218);
                     }
+
+                    // avoid that existent multiple white spaces immediately after a line break are ignored from iText7
+                    Table panel = Panel.GetPanel(new Paragraph(new Text(PreserveLeadingSpaces(item.Paragraph)).AddStyle(Styles.Paragraph)), color);
+                    cell.Add(panel);
+                    Table.AddCell(cell);
                 }
             });
         }
@@ -110,7 +109,7 @@ namespace PDFGenerator.EvaluationReport
                         cell.Add(ParagraphFactory.GetCustomParagraph(item.CourseName, Styles.H5, 0, 5, 1.15f));
                     }
 
-                    cell.Add(ParagraphFactory.GetStandardParagraph(item.Comment.Replace(' ', '\u00A0')));
+                    cell.Add(ParagraphFactory.GetStandardParagraph(PreserveLeadingSpaces(item.Comment)));
                     Table.AddCell(cell);
                 }
             });

pdf-generator/Renderers/EvaluationReportRenderer.cs

@@ -169,7 +169,9 @@ namespace PDFGenerator.Renderers
             PdfDocument resultDocument = new PdfDocument(new PdfWriter(memoryStream));
 
             // the first page of a PdfDocument is 1
+            // exclude appendix start page as last page, if there are no attachments
             int firstPage = 1;
+            int lastPage = EvaluationReport.Appendix.Attachments.Count > 0 ? PageBeforeTOC : PageBeforeTOC - 1;
 
             // One should call this method to preserve the outlines of the source pdf file, otherwise they
             // will be absent in the resultant document to which we copy pages.
@@ -183,7 +185,7 @@ namespace PDFGenerator.Renderers
             {
                 reorderedPages.Add(i);
             }
-            for (int i = firstPage + 1; i <= PageBeforeTOC; i++)
+            for (int i = firstPage + 1; i <= lastPage; i++)
             {
                 reorderedPages.Add(i);
             }