Changes to FileColumn allowing mouse click access to multiple files(.md, .png, etc.)

src/main/java/org/jabref/gui/maintable/MainTableColumnFactory.java

@@ -83,6 +83,7 @@ public MainTableColumnFactory(BibDatabaseContext database,
         this.tooltip = new MainTableTooltip(database, dialogService, preferences, themeManager, taskExecutor);
     }
 
+    @SuppressWarnings("checkstyle:WhitespaceAround")
     public TableColumn<BibEntryTableViewModel, ?> createColumn(MainTableColumnModel column) {
         TableColumn<BibEntryTableViewModel, ?> returnColumn = null;
         switch (column.getType()) {
@@ -109,6 +110,7 @@ public MainTableColumnFactory(BibDatabaseContext database,
                     returnColumn = createExtraFileColumn(column);
                 }
                 break;
+
             case SPECIALFIELD:
                 if (!column.getQualifier().isBlank()) {
                     Field field = FieldFactory.parseField(column.getQualifier());

src/main/java/org/jabref/gui/maintable/MainTableColumnModel.java

@@ -142,6 +142,16 @@ public String getQualifier() {
         return qualifierProperty.getValue();
     }
 
+    public MainTableColumnModel setQualifier(String qualifier) {
+        if (qualifier == null || qualifier.isBlank()) {
+            LOGGER.warn("Attempted to set a blank or null qualifier.");
+            this.qualifierProperty.setValue("");
+        } else {
+            this.qualifierProperty.setValue(qualifier);
+        }
+        return this;
+    }
+
     public String getName() {
         if (qualifierProperty.getValue().isBlank()) {
             return typeProperty.getValue().getName();

src/main/java/org/jabref/gui/maintable/columns/FileColumn.java

@@ -98,8 +98,35 @@ public FileColumn(MainTableColumnModel model,
                                          .getGraphicNode());
 
         new ValueTableCellFactory<BibEntryTableViewModel, List<LinkedFile>>()
-                .withGraphic((entry, linkedFiles) -> createFileIcon(entry, linkedFiles.stream().filter(linkedFile ->
-                                linkedFile.getFileType().equalsIgnoreCase(fileType)).collect(Collectors.toList())))
+                .withGraphic((entry, linkedFiles) -> createFileIcon(entry, linkedFiles.stream()
+                                                                                      .filter(linkedFile -> linkedFile.getFileType().equalsIgnoreCase(fileType))
+                                                                                      .collect(Collectors.toList())))
+                .withOnMouseClickedEvent((entry, linkedFiles) -> event -> {
+                    List<LinkedFile> filteredFiles = linkedFiles.stream()
+                                                                .filter(linkedFile -> linkedFile.getFileType().equalsIgnoreCase(fileType))
+                                                                .collect(Collectors.toList());
+
+                    if (event.getButton() == MouseButton.PRIMARY) {
+                        if (filteredFiles.size() == 1) {
+                            // Only one file - open directly
+                            LinkedFileViewModel linkedFileViewModel = new LinkedFileViewModel(filteredFiles.get(0),
+                                    entry.getEntry(), database, taskExecutor, dialogService, preferences);
+                            linkedFileViewModel.open();
+                        } else if (filteredFiles.size() > 1) {
+                            // Multiple files - show context menu to choose file
+                            ContextMenu contextMenu = new ContextMenu();
+                            for (LinkedFile linkedFile : filteredFiles) {
+                                LinkedFileViewModel linkedFileViewModel = new LinkedFileViewModel(linkedFile,
+                                        entry.getEntry(), database, taskExecutor, dialogService, preferences);
+                                MenuItem menuItem = new MenuItem(linkedFileViewModel.getTruncatedDescriptionAndLink(),
+                                        linkedFileViewModel.getTypeIcon().getGraphicNode());
+                                menuItem.setOnAction(e -> linkedFileViewModel.open());
+                                contextMenu.getItems().add(menuItem);
+                            }
+                            contextMenu.show(((Node) event.getSource()), event.getScreenX(), event.getScreenY());
+                        }
+                    }
+                })
                 .install(this);
     }