Fix import into current library issuing wrong message (#6269)

* Fix import into current library issuing wrong message (#6266)

This change fixes #6266 in which an erroneous message "import cancelled" is displayed when importing into the current library. This fix was accomplished by modifying the parameter of the extends clause of the ImportEntriesDialog class to have a return type of Boolean rather than Void and making setResultConverter return false rather than null.

* Reformat ImportEntriesDialog and Fix setResultConverter return value in FindUnlinkedFilesDialog

I have added back the proper indentation for line 79 of ImportEntriesDialog and changed the return value to Boolean and returned false in FindUnlinkedFilesDialog.

Co-authored-by: Christoph <siedlerkiller@gmail.com>

CHANGELOG.md

@@ -34,7 +34,8 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We fixed an issue with inconsistent capitalization of file extensions when downloading files. [#6115](https://github.com/JabRef/jabref/issues/6115)
 - We fixed the display of language and encoding in the preferences dialog. [#6130](https://github.com/JabRef/jabref/pull/6130)
 - We fixed an issue where search full-text documents downloaded files with same name, overwriting existing files. [#6174](https://github.com/JabRef/jabref/pull/6174)
-- We fixe an issue where custom jstyles for Open/LibreOffice where not saved correctly. [#6170](https://github.com/JabRef/jabref/issues/6170)
+- We fixed an issue where when importing into current library an erroneous message "import cancelled" is displayed even though import is successful. [#6266](https://github.com/JabRef/jabref/issues/6266)
+- We fixed an issue where custom jstyles for Open/LibreOffice where not saved correctly. [#6170](https://github.com/JabRef/jabref/issues/6170)
 
 
 ### Removed

src/main/java/org/jabref/gui/externalfiles/FindUnlinkedFilesDialog.java

@@ -60,7 +60,7 @@
 /**
  * GUI Dialog for the feature "Find unlinked files".
  */
-public class FindUnlinkedFilesDialog extends BaseDialog<Void> {
+public class FindUnlinkedFilesDialog extends BaseDialog<Boolean> {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(FindUnlinkedFilesDialog.class);
     private final BibDatabaseContext databaseContext;
@@ -196,7 +196,7 @@ private void initialize() {
                     findUnlinkedFilesTask.cancel();
                 }
             }
-            return null;
+            return false;
         });
 
         new ViewModelTreeCellFactory<FileNodeWrapper>()

src/main/java/org/jabref/gui/importer/ImportEntriesDialog.java

@@ -44,7 +44,7 @@
 import org.controlsfx.control.CheckListView;
 import org.fxmisc.easybind.EasyBind;
 
-public class ImportEntriesDialog extends BaseDialog<Void> {
+public class ImportEntriesDialog extends BaseDialog<Boolean> {
 
     public CheckListView<BibEntry> entriesListView;
     public ButtonType importButton;
@@ -84,7 +84,7 @@ public ImportEntriesDialog(BibDatabaseContext database, BackgroundTask<ParserRes
                 dialogService.notify(Localization.lang("Import canceled"));
             }
 
-            return null;
+            return false;
         });
     }