Feature: Add "Copy Field Content" submenu to entry context menu

CHANGELOG.md

@@ -37,6 +37,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 - We added support for import of a Refer/BibIX file format. [#13069](https://github.com/JabRef/jabref/issues/13069)
 - We added a new `jabkit` command `pseudonymize` to pseudonymize the library. [#13109](https://github.com/JabRef/jabref/issues/13109)
 - We added functionality to focus running instance when trying to start a second instance. [#13129](https://github.com/JabRef/jabref/issues/13129)
+- We added a "Copy Field Content" submenu to the entry context menu, allowing users to quickly copy specific field contents including Author, Journal, Date, Keywords, and Abstract fields from selected entries.
 - We added a highlighted diff regarding changes to the Group Tree Structure of a bib file, made outside JabRef. [#11221](https://github.com/JabRef/jabref/issues/11221)
 - We added a new setting in the 'Entry Editor' preferences to hide the 'File Annotations' tab when no annotations are available. [#13143](https://github.com/JabRef/jabref/issues/13143)
 - We added support for multi-file import across different formats. [#13269](https://github.com/JabRef/jabref/issues/13269)

jabgui/src/main/java/org/jabref/gui/actions/StandardActions.java

@@ -20,6 +20,12 @@ public enum StandardActions implements Action {
     COPY_CITATION_HTML(Localization.lang("Copy citation (html)"), KeyBinding.COPY_PREVIEW),
     COPY_CITATION_TEXT(Localization.lang("Copy citation (text)")),
     COPY_CITATION_PREVIEW(Localization.lang("Copy preview"), KeyBinding.COPY_PREVIEW),
+    COPY_FIELD_CONTENT(Localization.lang("Copy field content")),
+    COPY_FIELD_AUTHOR(Localization.lang("Author")),
+    COPY_FIELD_JOURNAL(Localization.lang("Journal")),
+    COPY_FIELD_DATE(Localization.lang("Date")),
+    COPY_FIELD_KEYWORDS(Localization.lang("Keywords")),
+    COPY_FIELD_ABSTRACT(Localization.lang("Abstract")),
     EXPORT_TO_CLIPBOARD(Localization.lang("Export to clipboard"), IconTheme.JabRefIcons.EXPORT_TO_CLIPBOARD),
     EXPORT_SELECTED_TO_CLIPBOARD(Localization.lang("Export selected entries to clipboard"), IconTheme.JabRefIcons.EXPORT_TO_CLIPBOARD),
     COPY(Localization.lang("Copy"), IconTheme.JabRefIcons.COPY, KeyBinding.COPY),

jabgui/src/main/java/org/jabref/gui/edit/CopyMoreAction.java

@@ -72,6 +72,16 @@ public void execute() {
                     copyKeyAndLink();
             case COPY_DOI, COPY_DOI_URL ->
                     copyDoi();
+            case COPY_FIELD_AUTHOR ->
+                    copyField(StandardField.AUTHOR, Localization.lang("Author"));
+            case COPY_FIELD_JOURNAL ->
+                    copyField(StandardField.JOURNAL, Localization.lang("Journal"));
+            case COPY_FIELD_DATE ->
+                    copyField(StandardField.DATE, Localization.lang("Date"));
+            case COPY_FIELD_KEYWORDS ->
+                    copyField(StandardField.KEYWORDS, Localization.lang("Keywords"));
+            case COPY_FIELD_ABSTRACT ->
+                    copyField(StandardField.ABSTRACT, Localization.lang("Abstract"));
             default ->
                     LOGGER.info("Unknown copy command.");
         }
@@ -264,4 +274,33 @@ private void copyKeyAndLink() {
                     Long.toString(entries.size() - entriesWithKey.size()), Integer.toString(entries.size())));
         }
     }
+
+    private void copyField(StandardField field, String fieldDisplayName) {
+        List<BibEntry> selectedBibEntries = stateManager.getSelectedEntries();
+
+        List<String> fieldValues = selectedBibEntries.stream()
+                                                     .filter(bibEntry -> bibEntry.getFieldOrAlias(field).isPresent())
+                                                     .map(bibEntry -> bibEntry.getFieldOrAlias(field).orElse(""))
+                                                     .filter(value -> !value.isEmpty())
+                                                     .collect(Collectors.toList());
+
+        if (fieldValues.isEmpty()) {
+            dialogService.notify(Localization.lang("None of the selected entries have %0.", fieldDisplayName));
+            return;
+        }
+
+        final String copiedContent = fieldValues.stream().collect(Collectors.joining("\n"));
+        clipBoardManager.setContent(copiedContent);
+
+        if (fieldValues.size() == selectedBibEntries.size()) {
+            // All entries had the field.
+            dialogService.notify(Localization.lang("Copied '%0' to clipboard.",
+                    JabRefDialogService.shortenDialogMessage(copiedContent)));
+        } else {
+            dialogService.notify(Localization.lang("Warning: %0 out of %1 entries have undefined %2.",
+                    Integer.toString(selectedBibEntries.size() - fieldValues.size()),
+                    Integer.toString(selectedBibEntries.size()),
+                    fieldDisplayName));
+        }
+    }
 }

jabgui/src/main/java/org/jabref/gui/maintable/RightClickMenu.java

@@ -178,6 +178,8 @@ private static Menu createCopySubMenu(ActionFactory factory,
 
         copySpecialMenu.getItems().addAll(
                 factory.createMenuItem(StandardActions.COPY_TITLE, new CopyMoreAction(StandardActions.COPY_TITLE, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
+                createCopyFieldContentSubMenu(factory, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository),
+                new SeparatorMenuItem(),
                 factory.createMenuItem(StandardActions.COPY_KEY, new CopyMoreAction(StandardActions.COPY_KEY, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
                 factory.createMenuItem(StandardActions.COPY_CITE_KEY, new CopyMoreAction(StandardActions.COPY_CITE_KEY, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
                 factory.createMenuItem(StandardActions.COPY_KEY_AND_TITLE, new CopyMoreAction(StandardActions.COPY_KEY_AND_TITLE, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
@@ -204,6 +206,25 @@ private static Menu createCopySubMenu(ActionFactory factory,
         return copySpecialMenu;
     }
 
+    private static Menu createCopyFieldContentSubMenu(ActionFactory factory,
+                                                      DialogService dialogService,
+                                                      StateManager stateManager,
+                                                      ClipBoardManager clipBoardManager,
+                                                      GuiPreferences preferences,
+                                                      JournalAbbreviationRepository abbreviationRepository) {
+        Menu copyFieldContentMenu = factory.createMenu(StandardActions.COPY_FIELD_CONTENT);
+
+        copyFieldContentMenu.getItems().addAll(
+                factory.createMenuItem(StandardActions.COPY_FIELD_AUTHOR, new CopyMoreAction(StandardActions.COPY_FIELD_AUTHOR, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
+                factory.createMenuItem(StandardActions.COPY_FIELD_JOURNAL, new CopyMoreAction(StandardActions.COPY_FIELD_JOURNAL, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
+                factory.createMenuItem(StandardActions.COPY_FIELD_DATE, new CopyMoreAction(StandardActions.COPY_FIELD_DATE, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
+                factory.createMenuItem(StandardActions.COPY_FIELD_KEYWORDS, new CopyMoreAction(StandardActions.COPY_FIELD_KEYWORDS, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository)),
+                factory.createMenuItem(StandardActions.COPY_FIELD_ABSTRACT, new CopyMoreAction(StandardActions.COPY_FIELD_ABSTRACT, dialogService, stateManager, clipBoardManager, preferences, abbreviationRepository))
+        );
+
+        return copyFieldContentMenu;
+    }
+
     private static Menu createSendSubMenu(ActionFactory factory,
                                           DialogService dialogService,
                                           StateManager stateManager,