Focus "Specify Bib(La)TeX" when Bib(La)TeX is in clipboard

CHANGELOG.md

@@ -67,6 +67,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 
 ### Fixed
 
+- We fixed an issue where "Specify Bib(La)TeX" tab was not focused when Bib(La)TeX was in the clipboard [#13597](https://github.com/JabRef/jabref/issues/13597).  
 - We fixed dark mode of BibTeX Source dialog in Citation Relations tab. [#13599](https://github.com/JabRef/jabref/issues/13599)
 - We fixed an issue where the LibreOffice integration did not support citation keys containing Unicode characters. [#13301](https://github.com/JabRef/jabref/issues/13301)
 - We fixed an issue where the "Search ShortScience" action did not convert LaTeX-formatted titles to Unicode.[#13418](https://github.com/JabRef/jabref/issues/13418)

jabgui/src/main/java/org/jabref/gui/newentry/NewEntryView.java

@@ -74,6 +74,9 @@
 import jakarta.inject.Inject;
 
 public class NewEntryView extends BaseDialog<BibEntry> {
+    private static final String BIBTEX_REGEX = "^@([A-Za-z]+)\\{,";
+    private static final String LINE_BREAK = "\n";
+
     private NewEntryViewModel viewModel;
 
     private final NewEntryDialogTab initialApproach;
@@ -164,6 +167,8 @@ private void finalizeTabs() {
                     approach = NewEntryDialogTab.ENTER_IDENTIFIER;
                     interpretText.setText(clipboardText);
                     interpretText.selectAll();
+                } else if (clipboardText.split(LINE_BREAK)[0].matches(BIBTEX_REGEX)) {
+                    approach = NewEntryDialogTab.SPECIFY_BIBTEX;
                 } else {
                     approach = preferences.getLatestApproach();
                 }
@@ -288,7 +293,7 @@ private void initializeLookupIdentifier() {
                     Tooltip.uninstall(idText, idTextTooltip);
                 }
             });
-            
+
             idText.setText(ClipBoardManager.getContents().trim());
             idText.selectAll();