add ability to insert arxivId (JabRef#7549)

* add ability to insert arxivId

* modify change log

* fix checkstyle

CHANGELOG.md

@@ -19,6 +19,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We added keybindings for setting and clearing the read status. [#7264](https://github.com/JabRef/jabref/issues/7264)
 - We added two new fields to track the creation and most recent modification date and time for each entry. [koppor#130](https://github.com/koppor/jabref/issues/130)
 - We added a feature that allows the user to copy highlighted text in the preview window. [#6962](https://github.com/JabRef/jabref/issues/6962)
+- We added a feature that allows you to create new BibEntry via paste arxivId [#2292](https://github.com/JabRef/jabref/issues/2292)
 
 ### Changed
 

src/main/java/org/jabref/gui/ClipBoardManager.java

@@ -27,10 +27,12 @@
 import org.jabref.logic.importer.ImportFormatReader;
 import org.jabref.logic.importer.ImportFormatReader.UnknownFormatImport;
 import org.jabref.logic.importer.ParseException;
+import org.jabref.logic.importer.fetcher.ArXiv;
 import org.jabref.logic.importer.fetcher.DoiFetcher;
 import org.jabref.logic.importer.fileformat.BibtexParser;
 import org.jabref.model.database.BibDatabaseMode;
 import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.identifier.ArXivIdentifier;
 import org.jabref.model.entry.identifier.DOI;
 import org.jabref.model.util.OptionalUtil;
 import org.jabref.preferences.PreferencesService;
@@ -194,6 +196,10 @@ private List<BibEntry> handleStringData(String data) {
         if (doi.isPresent()) {
             return fetchByDOI(doi.get());
         }
+        Optional<ArXivIdentifier> arXiv = ArXivIdentifier.parse(data);
+        if (arXiv.isPresent()) {
+            return fetchByArXiv(arXiv.get());
+        }
 
         return tryImportFormats(data);
     }
@@ -217,4 +223,15 @@ private List<BibEntry> fetchByDOI(DOI doi) {
             return Collections.emptyList();
         }
     }
+
+    private List<BibEntry> fetchByArXiv(ArXivIdentifier arXivIdentifier) {
+        LOGGER.info("Found arxiv identifier in clipboard");
+        try {
+            Optional<BibEntry> entry = new ArXiv(preferencesService.getImportFormatPreferences()).performSearchById(arXivIdentifier.getNormalizedWithoutVersion());
+            return OptionalUtil.toList(entry);
+        } catch (FetcherException ex) {
+            LOGGER.error("Error while fetching", ex);
+            return Collections.emptyList();
+        }
+    }
 }