Fix issue #9306: Move "Open only one instance of JabRef" preference option to somewhere else

CHANGELOG.md

@@ -16,6 +16,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 
 ### Changed
 
+- We move the location of the 'Open only one instance of JabRef' preference option from "Network" to "General" .[#9306](https://github.com/JabRef/jabref/issues/9306)
 - The two previews in the change resolver dialog now have their scrollbars synchronized [#9576](https://github.com/JabRef/jabref/issues/9576).
 - We changed the setting of the keyword separator to accept a single character only. [#177](https://github.com/koppor/jabref/issues/177)
 

src/main/java/org/jabref/gui/preferences/general/GeneralTab.fxml

@@ -4,6 +4,7 @@
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.CheckBox?>
 <?import javafx.scene.control.ComboBox?>
+<?import javafx.scene.control.Hyperlink?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.Spinner?>
 <?import javafx.scene.control.TextField?>
@@ -13,7 +14,6 @@
 <?import javafx.scene.layout.HBox?>
 <?import javafx.scene.layout.VBox?>
 <?import org.jabref.gui.icon.JabRefIconView?>
-<?import javafx.scene.control.Hyperlink?>
 <fx:root spacing="10.0" type="VBox"
          xmlns="http://javafx.com/javafx" xmlns:fx="http://javafx.com/fxml"
          fx:controller="org.jabref.gui.preferences.general.GeneralTab">
@@ -70,6 +70,13 @@
     <CheckBox fx:id="confirmDelete" text="%Show confirmation dialog when deleting entries"/>
     <CheckBox fx:id="collectTelemetry" text="%Collect and share telemetry data to help improve JabRef"/>
 
+    <Label styleClass="sectionHeader" text="%Single instance" />
+    <HBox alignment="CENTER_LEFT" spacing="10.0">
+        <CheckBox fx:id="remoteServer" text="%Enforce single JabRef instance (and allow remote operations) using port" />
+        <TextField fx:id="remotePort" maxWidth="100.0" HBox.hgrow="ALWAYS" />
+        <Button fx:id="remoteHelp" prefWidth="20.0" />
+    </HBox>
+
     <Label styleClass="sectionHeader" text="%Libraries"/>
     <GridPane hgap="10.0" vgap="4.0">
         <columnConstraints>

src/main/java/org/jabref/gui/preferences/general/GeneralTab.java

@@ -25,10 +25,13 @@
 import org.jabref.logic.l10n.Language;
 import org.jabref.logic.l10n.Localization;
 import org.jabref.model.database.BibDatabaseMode;
+import org.jabref.model.entry.BibEntryTypesManager;
+import org.jabref.model.util.FileUpdateMonitor;
 
 import com.airhacks.afterburner.views.ViewLoader;
 import com.tobiasdiez.easybind.EasyBind;
 import de.saxsys.mvvmfx.utils.validation.visualization.ControlsFxVisualizer;
+import jakarta.inject.Inject;
 
 public class GeneralTab extends AbstractPreferenceTabView<GeneralTabViewModel> implements PreferencesTab {
 
@@ -49,6 +52,11 @@ public class GeneralTab extends AbstractPreferenceTabView<GeneralTabViewModel> i
     @FXML private Button autosaveLocalLibrariesHelp;
     @FXML private CheckBox createBackup;
     @FXML private TextField backupDirectory;
+    @FXML private CheckBox remoteServer;
+    @FXML private TextField remotePort;
+    @FXML private Button remoteHelp;
+    @Inject private FileUpdateMonitor fileUpdateMonitor;
+    @Inject private BibEntryTypesManager entryTypesManager;
 
     private final ControlsFxVisualizer validationVisualizer = new ControlsFxVisualizer();
 
@@ -74,7 +82,7 @@ public String getTabName() {
     }
 
     public void initialize() {
-        this.viewModel = new GeneralTabViewModel(dialogService, preferencesService);
+        this.viewModel = new GeneralTabViewModel(dialogService, preferencesService, fileUpdateMonitor, entryTypesManager);
 
         new ViewModelListCellFactory<Language>()
                 .withText(Language::getDisplayName)
@@ -122,15 +130,21 @@ public void initialize() {
         autosaveLocalLibraries.selectedProperty().bindBidirectional(viewModel.autosaveLocalLibrariesProperty());
         ActionFactory actionFactory = new ActionFactory(preferencesService.getKeyBindingRepository());
         actionFactory.configureIconButton(StandardActions.HELP, new HelpAction(HelpFile.AUTOSAVE, dialogService, preferencesService.getFilePreferences()), autosaveLocalLibrariesHelp);
+        actionFactory.configureIconButton(StandardActions.HELP, new HelpAction(HelpFile.REMOTE, dialogService, preferencesService.getFilePreferences()), remoteHelp);
 
         createBackup.selectedProperty().bindBidirectional(viewModel.createBackupProperty());
         backupDirectory.textProperty().bindBidirectional(viewModel.backupDirectoryProperty());
         backupDirectory.disableProperty().bind(viewModel.createBackupProperty().not());
 
         Platform.runLater(() -> {
+            validationVisualizer.initVisualization(viewModel.remotePortValidationStatus(), remotePort);
             validationVisualizer.initVisualization(viewModel.fontSizeValidationStatus(), fontSize);
             validationVisualizer.initVisualization(viewModel.customPathToThemeValidationStatus(), customThemePath);
         });
+
+        remoteServer.selectedProperty().bindBidirectional(viewModel.remoteServerProperty());
+        remotePort.textProperty().bindBidirectional(viewModel.remotePortProperty());
+        remotePort.disableProperty().bind(remoteServer.selectedProperty().not());
     }
 
     @FXML

src/main/java/org/jabref/gui/preferences/general/GeneralTabViewModel.java

@@ -4,6 +4,7 @@
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ListProperty;
@@ -19,18 +20,26 @@
 import javafx.scene.control.SpinnerValueFactory;
 
 import org.jabref.gui.DialogService;
+import org.jabref.gui.Globals;
 import org.jabref.gui.desktop.JabRefDesktop;
 import org.jabref.gui.preferences.PreferenceTabViewModel;
+import org.jabref.gui.remote.CLIMessageHandler;
 import org.jabref.gui.theme.Theme;
 import org.jabref.gui.theme.ThemeTypes;
 import org.jabref.gui.util.DirectoryDialogConfiguration;
 import org.jabref.gui.util.FileDialogConfiguration;
 import org.jabref.logic.l10n.Language;
 import org.jabref.logic.l10n.Localization;
+import org.jabref.logic.net.ssl.TrustStoreManager;
+import org.jabref.logic.remote.RemotePreferences;
+import org.jabref.logic.remote.RemoteUtil;
 import org.jabref.logic.util.StandardFileType;
 import org.jabref.model.database.BibDatabaseMode;
+import org.jabref.model.entry.BibEntryTypesManager;
 import org.jabref.model.strings.StringUtil;
+import org.jabref.model.util.FileUpdateMonitor;
 import org.jabref.preferences.FilePreferences;
+import org.jabref.preferences.InternalPreferences;
 import org.jabref.preferences.LibraryPreferences;
 import org.jabref.preferences.PreferencesService;
 import org.jabref.preferences.TelemetryPreferences;
@@ -81,19 +90,33 @@ public class GeneralTabViewModel implements PreferenceTabViewModel {
     private final TelemetryPreferences telemetryPreferences;
     private final LibraryPreferences libraryPreferences;
     private final FilePreferences filePreferences;
+    private final RemotePreferences remotePreferences;
 
     private final Validator fontSizeValidator;
     private final Validator customPathToThemeValidator;
 
     private final List<String> restartWarning = new ArrayList<>();
-
-    public GeneralTabViewModel(DialogService dialogService, PreferencesService preferences) {
+    private final BooleanProperty remoteServerProperty = new SimpleBooleanProperty();
+    private final StringProperty remotePortProperty = new SimpleStringProperty("");
+    private final Validator remotePortValidator;
+    private final InternalPreferences internalPreferences;
+    private final BooleanProperty versionCheckProperty = new SimpleBooleanProperty();
+    private final FileUpdateMonitor fileUpdateMonitor;
+    private final BibEntryTypesManager entryTypesManager;
+    private TrustStoreManager trustStoreManager;
+
+    public GeneralTabViewModel(DialogService dialogService, PreferencesService preferences, FileUpdateMonitor fileUpdateMonitor, BibEntryTypesManager entryTypesManager) {
         this.dialogService = dialogService;
         this.preferences = preferences;
         this.workspacePreferences = preferences.getWorkspacePreferences();
         this.telemetryPreferences = preferences.getTelemetryPreferences();
         this.libraryPreferences = preferences.getLibraryPreferences();
         this.filePreferences = preferences.getFilePreferences();
+        this.remotePreferences = preferences.getRemotePreferences();
+        this.internalPreferences = preferences.getInternalPreferences();
+        this.fileUpdateMonitor = fileUpdateMonitor;
+        this.entryTypesManager = entryTypesManager;
+        this.trustStoreManager = trustStoreManager;
 
         fontSizeValidator = new FunctionBasedValidator<>(
                 fontSizeProperty,
@@ -116,6 +139,27 @@ public GeneralTabViewModel(DialogService dialogService, PreferencesService prefe
                         Localization.lang("General"),
                         Localization.lang("Visual theme"),
                         Localization.lang("Please specify a css theme file."))));
+
+        remotePortValidator = new FunctionBasedValidator<>(
+                remotePortProperty,
+                input -> {
+                    try {
+                        int portNumber = Integer.parseInt(remotePortProperty().getValue());
+                        return RemoteUtil.isUserPort(portNumber);
+                    } catch (NumberFormatException ex) {
+                        return false;
+                    }
+                },
+                ValidationMessage.error(String.format("%s > %s %n %n %s",
+                        Localization.lang("Network"),
+                        Localization.lang("Remote operation"),
+                        Localization.lang("You must enter an integer value in the interval 1025-65535"))));
+
+        this.trustStoreManager = new TrustStoreManager(Path.of(preferences.getSSLPreferences().getTruststorePath()));
+    }
+
+    public ValidationStatus remotePortValidationStatus() {
+        return remotePortValidator.getValidationStatus();
     }
 
     @Override
@@ -125,8 +169,10 @@ public void setValues() {
         // The light theme is in fact the absence of any theme modifying 'base.css'. Another embedded theme like
         // 'dark.css', stored in the classpath, can be introduced in {@link org.jabref.gui.theme.Theme}.
         switch (workspacePreferences.getTheme().getType()) {
-            case DEFAULT -> selectedThemeProperty.setValue(ThemeTypes.LIGHT);
-            case EMBEDDED -> selectedThemeProperty.setValue(ThemeTypes.DARK);
+            case DEFAULT ->
+                    selectedThemeProperty.setValue(ThemeTypes.LIGHT);
+            case EMBEDDED ->
+                    selectedThemeProperty.setValue(ThemeTypes.DARK);
             case CUSTOM -> {
                 selectedThemeProperty.setValue(ThemeTypes.CUSTOM);
                 customPathToThemeProperty.setValue(workspacePreferences.getTheme().getName());
@@ -151,6 +197,9 @@ public void setValues() {
 
         createBackupProperty.setValue(filePreferences.shouldCreateBackup());
         backupDirectoryProperty.setValue(filePreferences.getBackupDirectory().toString());
+
+        remoteServerProperty.setValue(remotePreferences.useRemoteServer());
+        remotePortProperty.setValue(String.valueOf(remotePreferences.getPort()));
     }
 
     @Override
@@ -185,6 +234,38 @@ public void storeSettings() {
 
         filePreferences.createBackupProperty().setValue(createBackupProperty.getValue());
         filePreferences.backupDirectoryProperty().setValue(Path.of(backupDirectoryProperty.getValue()));
+
+        getPortAsInt(remotePortProperty.getValue()).ifPresent(newPort -> {
+            if (remotePreferences.isDifferentPort(newPort)) {
+                remotePreferences.setPort(newPort);
+            }
+        });
+
+        internalPreferences.setVersionCheckEnabled(versionCheckProperty.getValue());
+
+        getPortAsInt(remotePortProperty.getValue()).ifPresent(newPort -> {
+            if (remotePreferences.isDifferentPort(newPort)) {
+                remotePreferences.setPort(newPort);
+            }
+        });
+
+        if (remoteServerProperty.getValue()) {
+            remotePreferences.setUseRemoteServer(true);
+            Globals.REMOTE_LISTENER.openAndStart(new CLIMessageHandler(preferences, fileUpdateMonitor, entryTypesManager), remotePreferences.getPort());
+        } else {
+            remotePreferences.setUseRemoteServer(false);
+            Globals.REMOTE_LISTENER.stop();
+        }
+        trustStoreManager.flush();
+
+        if (remoteServerProperty.getValue()) {
+            remotePreferences.setUseRemoteServer(true);
+            Globals.REMOTE_LISTENER.openAndStart(new CLIMessageHandler(preferences, fileUpdateMonitor, entryTypesManager), remotePreferences.getPort());
+        } else {
+            remotePreferences.setUseRemoteServer(false);
+            Globals.REMOTE_LISTENER.stop();
+        }
+        trustStoreManager.flush();
     }
 
     public ValidationStatus fontSizeValidationStatus() {
@@ -199,6 +280,10 @@ public ValidationStatus customPathToThemeValidationStatus() {
     public boolean validateSettings() {
         CompositeValidator validator = new CompositeValidator();
 
+        if (remoteServerProperty.getValue()) {
+            validator.addValidators(remotePortValidator);
+        }
+
         if (fontOverrideProperty.getValue()) {
             validator.addValidators(fontSizeValidator);
         }
@@ -310,6 +395,14 @@ public void backupFileDirBrowse() {
                      .ifPresent(dir -> backupDirectoryProperty.setValue(dir.toString()));
     }
 
+    public BooleanProperty remoteServerProperty() {
+        return remoteServerProperty;
+    }
+
+    public StringProperty remotePortProperty() {
+        return remotePortProperty;
+    }
+
     public void openBrowser() {
         String url = "https://themes.jabref.org";
         try {
@@ -318,4 +411,12 @@ public void openBrowser() {
             dialogService.showErrorDialogAndWait(Localization.lang("Could not open website."), e);
         }
     }
+
+    private Optional<Integer> getPortAsInt(String value) {
+        try {
+            return Optional.of(Integer.parseInt(value));
+        } catch (NumberFormatException ex) {
+            return Optional.empty();
+        }
+    }
 }

src/main/java/org/jabref/gui/preferences/network/NetworkTab.fxml

@@ -10,7 +10,6 @@
 <?import javafx.scene.control.TextField?>
 <?import javafx.scene.layout.ColumnConstraints?>
 <?import javafx.scene.layout.GridPane?>
-<?import javafx.scene.layout.HBox?>
 <?import javafx.scene.layout.RowConstraints?>
 <?import javafx.scene.layout.VBox?>
 <?import org.jabref.gui.icon.JabRefIconView?>
@@ -19,13 +18,6 @@
     <Label styleClass="titleHeader" text="%Network" />
     <CheckBox fx:id="versionCheck" text="%Check for latest version online"/>
     <Label text="%If you encounter an issue or a bug, please check the latest version, whether the issue is still present." wrapText="true"/>
-    <Label styleClass="sectionHeader" text="%Remote operation" />
-    <Label fx:id="remoteLabel" text="%This feature lets new files be opened or imported into an already running instance of JabRef instead of opening a new instance. For instance, this is useful when you open a file in JabRef from your web browser. Note that this will prevent you from running more than one instance of JabRef at a time." textOverrun="CLIP" wrapText="true" />
-    <HBox alignment="CENTER_LEFT" spacing="10.0">
-        <CheckBox fx:id="remoteServer" text="%Listen for remote operation on port" />
-        <TextField fx:id="remotePort" maxWidth="100.0" HBox.hgrow="ALWAYS" />
-        <Button fx:id="remoteHelp" prefWidth="20.0" />
-    </HBox>
 
     <Label styleClass="sectionHeader" text="%Proxy configuration" />
     <GridPane hgap="10.0" vgap="10.0">

src/main/java/org/jabref/gui/preferences/network/NetworkTab.java

@@ -17,33 +17,20 @@
 import javafx.scene.control.Tooltip;
 import javafx.scene.input.MouseEvent;
 
-import org.jabref.gui.Globals;
-import org.jabref.gui.actions.ActionFactory;
-import org.jabref.gui.actions.StandardActions;
-import org.jabref.gui.help.HelpAction;
 import org.jabref.gui.icon.IconTheme;
 import org.jabref.gui.preferences.AbstractPreferenceTabView;
 import org.jabref.gui.preferences.PreferencesTab;
 import org.jabref.gui.util.IconValidationDecorator;
 import org.jabref.gui.util.ValueTableCellFactory;
-import org.jabref.logic.help.HelpFile;
 import org.jabref.logic.l10n.Localization;
-import org.jabref.model.entry.BibEntryTypesManager;
-import org.jabref.model.util.FileUpdateMonitor;
 
 import com.airhacks.afterburner.views.ViewLoader;
 import com.tobiasdiez.easybind.EasyBind;
 import de.saxsys.mvvmfx.utils.validation.visualization.ControlsFxVisualizer;
-import jakarta.inject.Inject;
 import org.controlsfx.control.textfield.CustomPasswordField;
 
 public class NetworkTab extends AbstractPreferenceTabView<NetworkTabViewModel> implements PreferencesTab {
-    @FXML private Label remoteLabel;
     @FXML private CheckBox versionCheck;
-    @FXML private CheckBox remoteServer;
-    @FXML private TextField remotePort;
-    @FXML private Button remoteHelp;
-
     @FXML private CheckBox proxyUse;
     @FXML private Label proxyHostnameLabel;
     @FXML private TextField proxyHostname;
@@ -67,9 +54,6 @@ public class NetworkTab extends AbstractPreferenceTabView<NetworkTabViewModel> i
     @FXML private TableColumn<CustomCertificateViewModel, String> certVersion;
     @FXML private TableColumn<CustomCertificateViewModel, String> actionsColumn;
 
-    @Inject private FileUpdateMonitor fileUpdateMonitor;
-    @Inject private BibEntryTypesManager entryTypesManager;
-
     private String proxyPasswordText = "";
     private int proxyPasswordCaretPosition = 0;
 
@@ -87,15 +71,10 @@ public String getTabName() {
     }
 
     public void initialize() {
-        this.viewModel = new NetworkTabViewModel(dialogService, preferencesService, fileUpdateMonitor, entryTypesManager);
+        this.viewModel = new NetworkTabViewModel(dialogService, preferencesService);
 
         versionCheck.selectedProperty().bindBidirectional(viewModel.versionCheckProperty());
 
-        remoteLabel.setVisible(preferencesService.getWorkspacePreferences().shouldShowAdvancedHints());
-        remoteServer.selectedProperty().bindBidirectional(viewModel.remoteServerProperty());
-        remotePort.textProperty().bindBidirectional(viewModel.remotePortProperty());
-        remotePort.disableProperty().bind(remoteServer.selectedProperty().not());
-
         proxyUse.selectedProperty().bindBidirectional(viewModel.proxyUseProperty());
         proxyHostnameLabel.disableProperty().bind(proxyUse.selectedProperty().not());
         proxyHostname.textProperty().bindBidirectional(viewModel.proxyHostnameProperty());
@@ -129,12 +108,8 @@ public void initialize() {
         proxyPassword.getRight().addEventFilter(MouseEvent.MOUSE_RELEASED, this::proxyPasswordMask);
         proxyPassword.getRight().addEventFilter(MouseEvent.MOUSE_EXITED, this::proxyPasswordMask);
 
-        ActionFactory actionFactory = new ActionFactory(Globals.getKeyPrefs());
-        actionFactory.configureIconButton(StandardActions.HELP, new HelpAction(HelpFile.REMOTE, dialogService, preferencesService.getFilePreferences()), remoteHelp);
-
         validationVisualizer.setDecoration(new IconValidationDecorator());
         Platform.runLater(() -> {
-            validationVisualizer.initVisualization(viewModel.remotePortValidationStatus(), remotePort);
             validationVisualizer.initVisualization(viewModel.proxyHostnameValidationStatus(), proxyHostname);
             validationVisualizer.initVisualization(viewModel.proxyPortValidationStatus(), proxyPort);
             validationVisualizer.initVisualization(viewModel.proxyUsernameValidationStatus(), proxyUsername);

src/main/java/org/jabref/gui/preferences/network/NetworkTabViewModel.java

@@ -19,23 +19,17 @@
 import javafx.stage.FileChooser;
 
 import org.jabref.gui.DialogService;
-import org.jabref.gui.Globals;
 import org.jabref.gui.preferences.PreferenceTabViewModel;
-import org.jabref.gui.remote.CLIMessageHandler;
 import org.jabref.gui.util.FileDialogConfiguration;
 import org.jabref.logic.l10n.Localization;
 import org.jabref.logic.net.ProxyPreferences;
 import org.jabref.logic.net.ProxyRegisterer;
 import org.jabref.logic.net.URLDownload;
 import org.jabref.logic.net.ssl.SSLCertificate;
 import org.jabref.logic.net.ssl.TrustStoreManager;
-import org.jabref.logic.remote.RemotePreferences;
-import org.jabref.logic.remote.RemoteUtil;
 import org.jabref.logic.util.OS;
 import org.jabref.logic.util.StandardFileType;
-import org.jabref.model.entry.BibEntryTypesManager;
 import org.jabref.model.strings.StringUtil;
-import org.jabref.model.util.FileUpdateMonitor;
 import org.jabref.preferences.InternalPreferences;
 import org.jabref.preferences.PreferencesService;
 
@@ -48,8 +42,6 @@
 
 public class NetworkTabViewModel implements PreferenceTabViewModel {
     private final BooleanProperty versionCheckProperty = new SimpleBooleanProperty();
-    private final BooleanProperty remoteServerProperty = new SimpleBooleanProperty();
-    private final StringProperty remotePortProperty = new SimpleStringProperty("");
     private final BooleanProperty proxyUseProperty = new SimpleBooleanProperty();
     private final StringProperty proxyHostnameProperty = new SimpleStringProperty("");
     private final StringProperty proxyPortProperty = new SimpleStringProperty("");
@@ -60,18 +52,15 @@ public class NetworkTabViewModel implements PreferenceTabViewModel {
     private final BooleanProperty passwordPersistAvailable = new SimpleBooleanProperty();
     private final ListProperty<CustomCertificateViewModel> customCertificateListProperty = new SimpleListProperty<>(FXCollections.observableArrayList());
 
-    private final Validator remotePortValidator;
     private final Validator proxyHostnameValidator;
     private final Validator proxyPortValidator;
     private final Validator proxyUsernameValidator;
     private final Validator proxyPasswordValidator;
 
     private final DialogService dialogService;
     private final PreferencesService preferences;
-    private final FileUpdateMonitor fileUpdateMonitor;
-    private final BibEntryTypesManager entryTypesManager;
 
-    private final RemotePreferences remotePreferences;
+
     private final ProxyPreferences proxyPreferences;
     private final ProxyPreferences backupProxyPreferences;
     private final InternalPreferences internalPreferences;
@@ -81,14 +70,9 @@ public class NetworkTabViewModel implements PreferenceTabViewModel {
     private final AtomicBoolean sslCertificatesChanged = new AtomicBoolean(false);
 
     public NetworkTabViewModel(DialogService dialogService,
-                               PreferencesService preferences,
-                               FileUpdateMonitor fileUpdateMonitor,
-                               BibEntryTypesManager entryTypesManager) {
+                               PreferencesService preferences) {
         this.dialogService = dialogService;
         this.preferences = preferences;
-        this.fileUpdateMonitor = fileUpdateMonitor;
-        this.entryTypesManager = entryTypesManager;
-        this.remotePreferences = preferences.getRemotePreferences();
         this.proxyPreferences = preferences.getProxyPreferences();
         this.internalPreferences = preferences.getInternalPreferences();
 
@@ -101,21 +85,6 @@ public NetworkTabViewModel(DialogService dialogService,
                 proxyPreferences.getPassword(),
                 proxyPreferences.shouldPersistPassword());
 
-        remotePortValidator = new FunctionBasedValidator<>(
-                remotePortProperty,
-                input -> {
-                    try {
-                        int portNumber = Integer.parseInt(remotePortProperty().getValue());
-                        return RemoteUtil.isUserPort(portNumber);
-                    } catch (NumberFormatException ex) {
-                        return false;
-                    }
-                },
-                ValidationMessage.error(String.format("%s > %s %n %n %s",
-                        Localization.lang("Network"),
-                        Localization.lang("Remote operation"),
-                        Localization.lang("You must enter an integer value in the interval 1025-65535"))));
-
         proxyHostnameValidator = new FunctionBasedValidator<>(
                 proxyHostnameProperty,
                 input -> !StringUtil.isNullOrEmpty(input),
@@ -154,8 +123,6 @@ public NetworkTabViewModel(DialogService dialogService,
     @Override
     public void setValues() {
         versionCheckProperty.setValue(internalPreferences.isVersionCheckEnabled());
-        remoteServerProperty.setValue(remotePreferences.useRemoteServer());
-        remotePortProperty.setValue(String.valueOf(remotePreferences.getPort()));
 
         setProxyValues();
         setSSLValues();
@@ -192,22 +159,6 @@ private void setSSLValues() {
 
     @Override
     public void storeSettings() {
-        internalPreferences.setVersionCheckEnabled(versionCheckProperty.getValue());
-
-        getPortAsInt(remotePortProperty.getValue()).ifPresent(newPort -> {
-            if (remotePreferences.isDifferentPort(newPort)) {
-                remotePreferences.setPort(newPort);
-            }
-        });
-
-        if (remoteServerProperty.getValue()) {
-            remotePreferences.setUseRemoteServer(true);
-            Globals.REMOTE_LISTENER.openAndStart(new CLIMessageHandler(preferences, fileUpdateMonitor, entryTypesManager), remotePreferences.getPort());
-        } else {
-            remotePreferences.setUseRemoteServer(false);
-            Globals.REMOTE_LISTENER.stop();
-        }
-
         proxyPreferences.setUseProxy(proxyUseProperty.getValue());
         proxyPreferences.setHostname(proxyHostnameProperty.getValue().trim());
         proxyPreferences.setPort(proxyPortProperty.getValue().trim());
@@ -228,10 +179,6 @@ private Optional<Integer> getPortAsInt(String value) {
         }
     }
 
-    public ValidationStatus remotePortValidationStatus() {
-        return remotePortValidator.getValidationStatus();
-    }
-
     public ValidationStatus proxyHostnameValidationStatus() {
         return proxyHostnameValidator.getValidationStatus();
     }
@@ -252,10 +199,6 @@ public ValidationStatus proxyPasswordValidationStatus() {
     public boolean validateSettings() {
         CompositeValidator validator = new CompositeValidator();
 
-        if (remoteServerProperty.getValue()) {
-            validator.addValidators(remotePortValidator);
-        }
-
         if (proxyUseProperty.getValue()) {
             validator.addValidators(proxyHostnameValidator);
             validator.addValidators(proxyPortValidator);
@@ -325,14 +268,6 @@ public BooleanProperty versionCheckProperty() {
         return versionCheckProperty;
     }
 
-    public BooleanProperty remoteServerProperty() {
-        return remoteServerProperty;
-    }
-
-    public StringProperty remotePortProperty() {
-        return remotePortProperty;
-    }
-
     public BooleanProperty proxyUseProperty() {
         return proxyUseProperty;
     }

src/main/resources/build.properties

@@ -6,3 +6,4 @@ springerNatureAPIKey=${springerNatureAPIKey}
 astrophysicsDataSystemAPIKey=${astrophysicsDataSystemAPIKey}
 ieeeAPIKey=${ieeeAPIKey}
 biodiversityHeritageApiKey=${biodiversityHeritageApiKey}
+

src/main/resources/l10n/JabRef_en.properties

@@ -520,7 +520,6 @@ Last\ modified=Last modified
 LaTeX\ AUX\ file\:=LaTeX AUX file\:
 
 Link=Link
-Listen\ for\ remote\ operation\ on\ port=Listen for remote operation on port
 Memory\ stick\ mode\ -\ Store\ preferences\ in\ 'jabref.xml'\ in\ the\ app\ folder.=Memory stick mode - Store preferences in 'jabref.xml' in the app folder.
 
 Show\ advanced\ hints\ (i.e.\ helpful\ tooltips,\ suggestions\ and\ explanation)=Show advanced hints (i.e. helpful tooltips, suggestions and explanation)
@@ -1009,7 +1008,6 @@ Citation\ key\ generator=Citation key generator
 Unable\ to\ open\ link.=Unable to open link.
 MIME\ type=MIME type
 
-This\ feature\ lets\ new\ files\ be\ opened\ or\ imported\ into\ an\ already\ running\ instance\ of\ JabRef\ instead\ of\ opening\ a\ new\ instance.\ For\ instance,\ this\ is\ useful\ when\ you\ open\ a\ file\ in\ JabRef\ from\ your\ web\ browser.\ Note\ that\ this\ will\ prevent\ you\ from\ running\ more\ than\ one\ instance\ of\ JabRef\ at\ a\ time.=This feature lets new files be opened or imported into an already running instance of JabRef instead of opening a new instance. For instance, this is useful when you open a file in JabRef from your web browser. Note that this will prevent you from running more than one instance of JabRef at a time.
 Run\ fetcher=Run fetcher
 
 Line\ %0\:\ Found\ corrupted\ citation\ key\ %1.=Line %0: Found corrupted citation key %1.
@@ -2604,3 +2602,6 @@ Help\ on\ external\ applications=Help on external applications
 Identifier-based\ Web\ Search=Identifier-based Web Search
 
 Pushing\ citations\ to\ TeXShop\ is\ only\ possible\ on\ macOS\!=Pushing citations to TeXShop is only possible on macOS!
+
+Single\ instance=Single instance
+Enforce\ single\ JabRef\ instance\ (and\ allow\ remote\ operations)\ using\ port=Enforce single JabRef instance (and allow remote operations) using port