add menu item to show introduction again

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -24,6 +24,7 @@ import com.sparrowwallet.sparrow.event.*;
 import com.sparrowwallet.sparrow.io.*;
 import com.sparrowwallet.sparrow.net.ElectrumServer;
 import com.sparrowwallet.sparrow.net.ServerType;
+import com.sparrowwallet.sparrow.preferences.PreferenceGroup;
 import com.sparrowwallet.sparrow.preferences.PreferencesDialog;
 import com.sparrowwallet.sparrow.transaction.TransactionController;
 import com.sparrowwallet.sparrow.transaction.TransactionData;
@@ -260,6 +261,15 @@ public class AppController implements Initializable {
         }
     }
 
+    public void showIntroduction(ActionEvent event) {
+        WelcomeDialog welcomeDialog = new WelcomeDialog();
+        Optional<Mode> optionalMode = welcomeDialog.showAndWait();
+        if(optionalMode.isPresent() && optionalMode.get().equals(Mode.ONLINE)) {
+            PreferencesDialog preferencesDialog = new PreferencesDialog(PreferenceGroup.SERVER);
+            preferencesDialog.showAndWait();
+        }
+    }
+
     public void showAbout(ActionEvent event) {
         Stage aboutStage = getAboutStage();
         aboutStage.show();

src/main/java/com/sparrowwallet/sparrow/WelcomeDialog.java

@@ -27,7 +27,7 @@ public class WelcomeDialog extends Dialog<Mode> {
             final ButtonType nextButtonType = new javafx.scene.control.ButtonType("Next", ButtonBar.ButtonData.OK_DONE);
             final ButtonType backButtonType = new javafx.scene.control.ButtonType("Back", ButtonBar.ButtonData.LEFT);
             final ButtonType onlineButtonType = new javafx.scene.control.ButtonType("Configure Server", ButtonBar.ButtonData.APPLY);
-            final ButtonType offlineButtonType = new javafx.scene.control.ButtonType("Later or Offline Mode", ButtonBar.ButtonData.CANCEL_CLOSE);
+            final ButtonType offlineButtonType = new javafx.scene.control.ButtonType(AppServices.isConnected() ? "Done" : "Later or Offline Mode", ButtonBar.ButtonData.CANCEL_CLOSE);
             dialogPane.getButtonTypes().addAll(nextButtonType, backButtonType, onlineButtonType, offlineButtonType);
 
             Button nextButton = (Button)dialogPane.lookupButton(nextButtonType);

src/main/resources/com/sparrowwallet/sparrow/app.fxml

@@ -90,6 +90,7 @@
                     <MenuItem mnemonicParsing="false" text="Sign/Verify Message" accelerator="Shortcut+M" onAction="#signVerifyMessage"/>
                 </Menu>
                 <Menu fx:id="helpMenu" mnemonicParsing="false" text="Help">
+                    <MenuItem mnemonicParsing="false" text="Show Introduction" onAction="#showIntroduction"/>
                     <MenuItem styleClass="osxHide" mnemonicParsing="false" text="About Sparrow" onAction="#showAbout"/>
                 </Menu>
             </menus>