OO-4676: Validate if item is selected

src/main/java/org/olat/course/nodes/EdusharingCourseNode.java

@@ -143,9 +143,20 @@ public class EdusharingCourseNode extends AbstractAccessableCourseNode {
 
 	@Override
 	public StatusDescription isConfigValid() {
-		if (oneClickStatusCache != null) { return oneClickStatusCache[0]; }
-		
+		if (oneClickStatusCache != null) {
+			return oneClickStatusCache[0];
+		}
+
 		StatusDescription sd = StatusDescription.NOERROR;
+		if (!getModuleConfiguration().has(CONFIG_IDENTIFIER)) {
+			String shortKey = "error.no.item.short";
+			String longKey = "error.no.item.long";
+			String[] params = new String[] { this.getShortTitle() };
+			sd = new StatusDescription(StatusDescription.ERROR, shortKey, longKey, params, TRANSLATOR_PACKAGE);
+			sd.setDescriptionForUnit(getIdent());
+			// set which pane is affected by error
+			sd.setActivateableViewIdentifier(EdusharingEditController.PANE_TAB_CONFIG);
+		}
 		return sd;
 	}
 

src/main/java/org/olat/course/nodes/edusharing/ui/_i18n/LocalStrings_de.properties

@@ -11,6 +11,8 @@ edit.title=$\:pane.tab.config
 edit.version=$org.olat.modules.edusharing.ui\:tiny.config.version
 edit.version.current=$org.olat.modules.edusharing.ui\:tiny.config.version.current
 edit.version.latest=$org.olat.modules.edusharing.ui\:tiny.config.version.latest
+error.no.item.long=F\u00FCr "{0}" muss ein Inhalt im Reiter "edu-sharing" ausgew\u00E4hlt werden.
+error.no.item.short=Es ist kein Inhalt ausw\u00E4hlt.
 error.selection.failed=Die Auswahl konnte nicht gespeichert werden.
 pane.tab.config=edu-sharing
 preview=Vorschau
\ No newline at end of file

src/main/java/org/olat/course/nodes/edusharing/ui/_i18n/LocalStrings_en.properties

@@ -11,6 +11,8 @@ edit.title=$\:pane.tab.config
 edit.version=$org.olat.modules.edusharing.ui\:tiny.config.version
 edit.version.current=$org.olat.modules.edusharing.ui\:tiny.config.version.current
 edit.version.latest=$org.olat.modules.edusharing.ui\:tiny.config.version.latest
+error.no.item.long=For "{0}" you have to select an item in the tab "edu-sharing".
+error.no.item.short=No item selected.
 error.selection.failed=The selection could not be saved.
 pane.tab.config=edu-sharing
 preview=Preview
\ No newline at end of file