OO-3101: use the same status algorithm as the table renderer in Excel

src/main/java/org/olat/modules/lecture/ui/component/LectureBlockStatusCellRenderer.java

@@ -25,6 +25,7 @@ import org.olat.core.gui.render.Renderer;
 import org.olat.core.gui.render.StringOutput;
 import org.olat.core.gui.render.URLBuilder;
 import org.olat.core.gui.translator.Translator;
+import org.olat.core.util.StringHelper;
 import org.olat.modules.lecture.LectureBlock;
 import org.olat.modules.lecture.LectureBlockStatus;
 import org.olat.modules.lecture.LectureRollCallStatus;
@@ -50,13 +51,22 @@ public class LectureBlockStatusCellRenderer implements FlexiCellRenderer {
 			target.append(translator.translate(status.name()));
 		} else if(cellValue instanceof LectureBlock) {
 			LectureBlock block = (LectureBlock)cellValue;
-			LectureBlockStatus status = block.getStatus();
-			if(LectureBlockStatus.done.equals(status)) {
-				LectureRollCallStatus rollCallStatus = block.getRollCallStatus();
-				target.append(translator.translate(rollCallStatus.name()));
-			} else {
-				target.append(translator.translate(status.name()));
+			String status  = getStatus(block, translator);
+			if(StringHelper.containsNonWhitespace(status)) {
+				target.append(status);
 			}
 		}
 	}
+	
+	public static final String getStatus(LectureBlock block, Translator trans) {
+		LectureBlockStatus status = block.getStatus();
+		if(LectureBlockStatus.done.equals(status)) {
+			LectureRollCallStatus rollCallStatus = block.getRollCallStatus();
+			return trans.translate(rollCallStatus.name());
+		}
+		if(status != null) {
+			return trans.translate(status.name());
+		}
+		return null;
+	}
 }

src/main/java/org/olat/modules/lecture/ui/export/LecturesBlocksEntryExport.java

@@ -41,6 +41,7 @@ import org.olat.modules.lecture.LectureBlock;
 import org.olat.modules.lecture.LectureService;
 import org.olat.modules.lecture.Reason;
 import org.olat.modules.lecture.model.LectureBlockWithTeachers;
+import org.olat.modules.lecture.ui.component.LectureBlockStatusCellRenderer;
 import org.olat.repository.RepositoryEntry;
 import org.olat.user.UserManager;
 
@@ -139,7 +140,12 @@ public class LecturesBlocksEntryExport extends OpenXMLWorkbookResource {
 				if(lectureBlock.getRollCallStatus() == null) {
 					pos++;
 				} else {
-					row.addCell(pos++, translator.translate(lectureBlock.getRollCallStatus().name()));
+					String status = LectureBlockStatusCellRenderer.getStatus(lectureBlock, translator);
+					if(status != null) {
+						row.addCell(pos++, status);
+					} else {
+						pos++;
+					}
 				}
 				row.addCell(pos++, formatter.formatDate(lectureBlock.getAutoClosedDate()));