Transfer: display estimated transaction fee, requires #6302

2 files changed, 18 insertions, 0 deletions

diff --git a/src/libwalletqt/Wallet.cpp b/src/libwalletqt/Wallet.cpp
index c32026f8..5f632725 100644
--- a/src/libwalletqt/Wallet.cpp
+++ b/src/libwalletqt/Wallet.cpp
@@ -575,6 +575,19 @@ void Wallet::disposeTransaction(UnsignedTransaction *t)
     delete t;
 }
 
+void Wallet::estimateTransactionFeeAsync(const QString &destination,
+                                         quint64 amount,
+                                         PendingTransaction::Priority priority,
+                                         const QJSValue &callback)
+{
+    m_scheduler.run([this, destination, amount, priority] {
+        const uint64_t fee = m_walletImpl->estimateTransactionFee(
+            {std::make_pair(destination.toStdString(), amount)},
+            static_cast<Monero::PendingTransaction::Priority>(priority));
+        return QJSValueList({QString::fromStdString(Monero::Wallet::displayAmount(fee))});
+    }, callback);
+}
+
 TransactionHistory *Wallet::history() const
 {
     return m_history;
diff --git a/src/libwalletqt/Wallet.h b/src/libwalletqt/Wallet.h
index a6add1da..e43bd59d 100644
--- a/src/libwalletqt/Wallet.h
+++ b/src/libwalletqt/Wallet.h
@@ -248,6 +248,11 @@ public:
     //! deletes unsigned transaction and frees memory
     Q_INVOKABLE void disposeTransaction(UnsignedTransaction * t);
 
+    Q_INVOKABLE void estimateTransactionFeeAsync(const QString &destination,
+                                                 quint64 amount,
+                                                 PendingTransaction::Priority priority,
+                                                 const QJSValue &callback);
+
     //! returns transaction history
     TransactionHistory * history() const;