add select all button to utxos tab

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

@@ -83,6 +83,9 @@ public class UtxosController extends WalletFormController implements Initializab
     @FXML
     private Button mixTo;
 
+    @FXML
+    private Button selectAll;
+
     @FXML
     private Button clear;
 
@@ -194,6 +197,7 @@ public class UtxosController extends WalletFormController implements Initializab
         balance.setValue(walletUtxosEntry.getBalance());
         mempoolBalance.setValue(walletUtxosEntry.getMempoolBalance());
         utxoCount.setText(walletUtxosEntry.getChildren() != null ? Integer.toString(walletUtxosEntry.getChildren().size()) : "0");
+        selectAll.setDisable(walletUtxosEntry.getChildren() == null || walletUtxosEntry.getChildren().size() == 0);
     }
 
     private boolean canWalletMix() {
@@ -203,6 +207,7 @@ public class UtxosController extends WalletFormController implements Initializab
     private void updateButtons(BitcoinUnit unit) {
         List<Entry> selectedEntries = getSelectedEntries();
 
+        selectAll.setDisable(utxosTable.getRoot().getChildren().size() == utxosTable.getSelectionModel().getSelectedCells().size());
         clear.setDisable(selectedEntries.isEmpty());
         sendSelected.setDisable(selectedEntries.isEmpty());
         mixSelected.setDisable(selectedEntries.isEmpty() || !AppServices.isConnected());
@@ -374,6 +379,10 @@ public class UtxosController extends WalletFormController implements Initializab
                 .collect(Collectors.toList());
     }
 
+    public void selectAll(ActionEvent event) {
+        utxosTable.getSelectionModel().selectAll();
+    }
+
     public void clear(ActionEvent event) {
         utxosTable.getSelectionModel().clearSelection();
     }

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

@@ -213,7 +213,7 @@ public class WalletForm {
 
     private void updateWallets(Integer blockHeight, Wallet previousWallet) {
         List<WalletNode> nestedHistoryChangedNodes = new ArrayList<>();
-        for(Wallet childWallet : wallet.getChildWallets()) {
+        for(Wallet childWallet : new ArrayList<>(wallet.getChildWallets())) {
             if(childWallet.isNested()) {
                 Wallet previousChildWallet = previousWallet.getChildWallet(childWallet.getName());
                 if(previousChildWallet != null) {

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

@@ -83,6 +83,7 @@
                         </HBox>
                         <Region HBox.hgrow="ALWAYS" />
                         <HBox styleClass="utxos-buttons-box" spacing="20" alignment="BOTTOM_RIGHT">
+                            <Button fx:id="selectAll" text="Select All" onAction="#selectAll"/>
                             <Button fx:id="clear" text="Clear" onAction="#clear"/>
                             <Button fx:id="mixSelected" text="Mix Selected" graphicTextGap="5" onAction="#mixSelected">
                                 <graphic>