Show valuation in BTC balance tooltips

When hovering over the available, reserved, and locked BTC balances
in the main view, show the market price valuation based on your
preferred currency.

Fixes https://github.com/bisq-network/bisq/issues/1770

desktop/src/main/java/bisq/desktop/main/MainView.java

@@ -40,6 +40,7 @@ import bisq.desktop.main.settings.SettingsView;
 import bisq.desktop.util.Transitions;
 
 import bisq.core.exceptions.BisqException;
+import bisq.core.locale.GlobalSettings;
 import bisq.core.locale.Res;
 import bisq.core.util.BSFormatter;
 
@@ -80,11 +81,17 @@ import javafx.geometry.Insets;
 import javafx.geometry.Orientation;
 import javafx.geometry.Pos;
 
+import javafx.beans.binding.ObjectBinding;
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 import javafx.beans.value.ChangeListener;
 
+import java.text.DecimalFormat;
+import java.text.NumberFormat;
+
+import java.util.Locale;
+
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 
@@ -186,6 +193,11 @@ public class MainView extends InitializableView<StackPane, MainViewModel> {
         JFXBadge daoButtonWithBadge = new JFXBadge(daoButton);
         daoButtonWithBadge.getStyleClass().add("new");
 
+        Locale locale = GlobalSettings.getLocale();
+        DecimalFormat currencyFormat = (DecimalFormat) NumberFormat.getNumberInstance(locale);
+        currencyFormat.setMinimumFractionDigits(2);
+        currencyFormat.setMaximumFractionDigits(2);
+
         root.sceneProperty().addListener((observable, oldValue, newValue) -> {
             if (newValue != null) {
                 newValue.addEventHandler(KeyEvent.KEY_RELEASED, keyEvent -> {
@@ -231,15 +243,75 @@ public class MainView extends InitializableView<StackPane, MainViewModel> {
         Tuple2<Label, VBox> availableBalanceBox = getBalanceBox(Res.get("mainView.balance.available"));
         availableBalanceBox.first.textProperty().bind(model.getAvailableBalance());
         availableBalanceBox.first.setPrefWidth(100);
-        availableBalanceBox.first.setTooltip(new Tooltip(Res.get("mainView.balance.available")));
+        availableBalanceBox.first.tooltipProperty().bind(new ObjectBinding<>() {
+            {
+                bind(model.getAvailableBalance());
+                bind(model.getMarketPrice());
+            }
+
+            @Override
+            protected Tooltip computeValue() {
+                String tooltipText = Res.get("mainView.balance.available");
+                try {
+                    double availableBalance = Double.parseDouble(
+                            model.getAvailableBalance().getValue().replace("BTC", ""));
+                    double marketPrice = Double.parseDouble(model.getMarketPrice().getValue());
+                    tooltipText += "\n" + currencyFormat.format(availableBalance * marketPrice) +
+                            " " + model.getPreferences().getPreferredTradeCurrency().getCode();
+                } catch (NullPointerException | NumberFormatException e) {
+                    // Either the balance or market price is not available yet
+                }
+                return new Tooltip(tooltipText);
+            }
+        });
 
         Tuple2<Label, VBox> reservedBalanceBox = getBalanceBox(Res.get("mainView.balance.reserved.short"));
         reservedBalanceBox.first.textProperty().bind(model.getReservedBalance());
-        reservedBalanceBox.first.setTooltip(new Tooltip(Res.get("mainView.balance.reserved")));
+        reservedBalanceBox.first.tooltipProperty().bind(new ObjectBinding<>() {
+            {
+                bind(model.getReservedBalance());
+                bind(model.getMarketPrice());
+            }
+
+            @Override
+            protected Tooltip computeValue() {
+                String tooltipText = Res.get("mainView.balance.reserved");
+                try {
+                    double reservedBalance = Double.parseDouble(
+                            model.getReservedBalance().getValue().replace("BTC", ""));
+                    double marketPrice = Double.parseDouble(model.getMarketPrice().getValue());
+                    tooltipText += "\n" + currencyFormat.format(reservedBalance * marketPrice) +
+                            " " + model.getPreferences().getPreferredTradeCurrency().getCode();
+                } catch (NullPointerException | NumberFormatException e) {
+                    // Either the balance or market price is not available yet
+                }
+                return new Tooltip(tooltipText);
+            }
+        });
 
         Tuple2<Label, VBox> lockedBalanceBox = getBalanceBox(Res.get("mainView.balance.locked.short"));
         lockedBalanceBox.first.textProperty().bind(model.getLockedBalance());
-        lockedBalanceBox.first.setTooltip(new Tooltip(Res.get("mainView.balance.locked")));
+        lockedBalanceBox.first.tooltipProperty().bind(new ObjectBinding<>() {
+            {
+                bind(model.getLockedBalance());
+                bind(model.getMarketPrice());
+            }
+
+            @Override
+            protected Tooltip computeValue() {
+                String tooltipText = Res.get("mainView.balance.locked");
+                try {
+                    double lockedBalance = Double.parseDouble(
+                            model.getLockedBalance().getValue().replace("BTC", ""));
+                    double marketPrice = Double.parseDouble(model.getMarketPrice().getValue());
+                    tooltipText += "\n" + currencyFormat.format(lockedBalance * marketPrice) +
+                            " " + model.getPreferences().getPreferredTradeCurrency().getCode();
+                } catch (NullPointerException | NumberFormatException e) {
+                    // Either the balance or market price is not available yet
+                }
+                return new Tooltip(tooltipText);
+            }
+        });
 
         HBox primaryNav = new HBox(marketButton, getNavigationSeparator(), buyButton, getNavigationSeparator(),
                 sellButton, getNavigationSeparator(), portfolioButtonWithBadge, getNavigationSeparator(), fundsButton);

desktop/src/main/java/bisq/desktop/main/MainViewModel.java

@@ -97,6 +97,7 @@ public class MainViewModel implements ViewModel, BisqSetup.BisqSetupCompleteList
     private final DaoPresentation daoPresentation;
     private final P2PService p2PService;
     private final TradeManager tradeManager;
+    @Getter
     private final Preferences preferences;
     private final PrivateNotificationManager privateNotificationManager;
     private final WalletPasswordWindow walletPasswordWindow;
@@ -591,6 +592,10 @@ public class MainViewModel implements ViewModel, BisqSetup.BisqSetupCompleteList
         return marketPricePresentation.getMarketPriceUpdated();
     }
 
+    StringProperty getMarketPrice() {
+        return marketPricePresentation.getMarketPrice();
+    }
+
     public ObservableList<PriceFeedComboBoxItem> getPriceFeedComboBoxItems() {
         return marketPricePresentation.getPriceFeedComboBoxItems();
     }

desktop/src/main/java/bisq/desktop/main/presentation/MarketPricePresentation.java

@@ -237,4 +237,8 @@ public class MarketPricePresentation {
     public IntegerProperty getMarketPriceUpdated() {
         return marketPriceUpdated;
     }
+
+    public StringProperty getMarketPrice() {
+        return marketPrice;
+    }
 }