Fix Permissions of LaTeXintegration (#5134)

* Differentiate Causes of Errors

* Refactor Failure Mode

* Remove unnecessary return

* Remove redundant lines

src/main/java/org/jabref/gui/texparser/ParseTexDialogViewModel.java

@@ -1,6 +1,7 @@
 package org.jabref.gui.texparser;
 
 import java.io.IOException;
+import java.nio.file.FileSystemException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -126,10 +127,19 @@ public void searchButtonClicked() {
                           noFilesFound.set(false);
                           successfulSearch.set(true);
                       })
-                      .onFailure(dialogService::showErrorDialogAndWait)
+                      .onFailure(this::handleFailure)
                       .executeWith(taskExecutor);
     }
 
+    private void handleFailure(Exception exception) {
+        final boolean permissionProblem = exception instanceof IOException && exception.getCause() instanceof FileSystemException && exception.getCause().getMessage().endsWith("Operation not permitted");
+        if (permissionProblem) {
+            dialogService.showErrorDialogAndWait(String.format(Localization.lang("JabRef does not have permission to access %s"), exception.getCause().getMessage()));
+        } else {
+            dialogService.showErrorDialogAndWait(exception);
+        }
+    }
+
     private FileNodeViewModel searchDirectory(Path directory) throws IOException {
         if (directory == null || !directory.toFile().isDirectory()) {
             throw new IOException(String.format("Invalid directory for searching: %s", directory));

src/main/resources/l10n/JabRef_en.properties

@@ -1373,6 +1373,7 @@ Open\ %0\ file=Open %0 file
 
 Cannot\ delete\ file=Cannot delete file
 File\ permission\ error=File permission error
+JabRef\ does\ not\ have\ permission\ to\ access\ %s=JabRef does not have permission to access %s
 Push\ to\ %0=Push to %0
 Path\ to\ %0=Path to %0
 Convert=Convert