fiat amount on send

src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java

@@ -6,10 +6,12 @@ import com.sparrowwallet.drongo.address.Address;
 import com.sparrowwallet.drongo.address.InvalidAddressException;
 import com.sparrowwallet.drongo.wallet.*;
 import com.sparrowwallet.sparrow.AppController;
+import com.sparrowwallet.sparrow.CurrencyRate;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.control.*;
 import com.sparrowwallet.sparrow.event.*;
 import com.sparrowwallet.sparrow.io.Config;
+import com.sparrowwallet.sparrow.io.ExchangeSource;
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleBooleanProperty;
@@ -52,6 +54,9 @@ public class SendController extends WalletFormController implements Initializabl
     @FXML
     private ComboBox<BitcoinUnit> amountUnit;
 
+    @FXML
+    private FiatLabel fiatAmount;
+
     @FXML
     private Button maxButton;
 
@@ -94,6 +99,13 @@ public class SendController extends WalletFormController implements Initializabl
                 utxoSelectorProperty.setValue(null);
             }
 
+            Long recipientValueSats = getRecipientValueSats();
+            if(recipientValueSats != null) {
+                setFiatAmount(AppController.getFiatCurrencyExchangeRate(), recipientValueSats);
+            } else {
+                fiatAmount.setText("");
+            }
+
             updateTransaction();
         }
     };
@@ -440,6 +452,12 @@ public class SendController extends WalletFormController implements Initializabl
         updateTransaction(true);
     }
 
+    private void setFiatAmount(CurrencyRate currencyRate, long amount) {
+        if(currencyRate != null && currencyRate.isAvailable()) {
+            fiatAmount.set(currencyRate, amount);
+        }
+    }
+
     public void clear(ActionEvent event) {
         address.setText("");
         label.setText("");
@@ -508,4 +526,17 @@ public class SendController extends WalletFormController implements Initializabl
         amountUnit.getSelectionModel().select(BitcoinUnit.BTC.equals(unit) ? 0 : 1);
         feeAmountUnit.getSelectionModel().select(BitcoinUnit.BTC.equals(unit) ? 0 : 1);
     }
+
+    @Subscribe
+    public void fiatCurrencySelected(FiatCurrencySelectedEvent event) {
+        if(event.getExchangeSource() == ExchangeSource.NONE) {
+            fiatAmount.setCurrency(null);
+            fiatAmount.setBtcRate(0.0);
+        }
+    }
+
+    @Subscribe
+    public void exchangeRatesUpdated(ExchangeRatesUpdatedEvent event) {
+        setFiatAmount(event.getCurrencyRate(), getRecipientValueSats());
+    }
 }

src/main/resources/com/sparrowwallet/sparrow/wallet/send.fxml

@@ -19,6 +19,7 @@
 <?import javafx.scene.chart.NumberAxis?>
 <?import com.sparrowwallet.sparrow.control.TransactionDiagram?>
 <?import com.sparrowwallet.drongo.BitcoinUnit?>
+<?import com.sparrowwallet.sparrow.control.FiatLabel?>
 
 <BorderPane stylesheets="@send.css, @wallet.css, @../script.css, @../general.css" styleClass="wallet-pane" xmlns="http://javafx.com/javafx/10.0.2-internal" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.sparrowwallet.sparrow.wallet.SendController">
     <center>
@@ -54,6 +55,8 @@
                                 </items>
                             </ComboBox>
                             <Region style="-fx-pref-width: 20" />
+                            <FiatLabel fx:id="fiatAmount" />
+                            <Region style="-fx-pref-width: 20" />
                             <Button fx:id="maxButton" text="Max" onAction="#setMaxInput" />
                         </Field>
                     </Fieldset>