From 00ea5d6be958159ba3cecb058b56bc4e23fc571d Mon Sep 17 00:00:00 2001
From: Jacob Brydolf <jacob@brydolf.net>
Date: Tue, 8 Nov 2016 16:33:36 +0100
Subject: [PATCH] added Wallet::createTransactionAsync()

---
 src/libwalletqt/Wallet.cpp | 23 ++++++++++++++++++++++-
 src/libwalletqt/Wallet.h   |  7 +++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/libwalletqt/Wallet.cpp b/src/libwalletqt/Wallet.cpp
index d281c03a..8ec8c663 100644
--- a/src/libwalletqt/Wallet.cpp
+++ b/src/libwalletqt/Wallet.cpp
@@ -10,6 +10,7 @@
 #include <QDebug>
 #include <QUrl>
 #include <QTimer>
+#include <QtConcurrent/QtConcurrent>
 
 namespace {
     static const int DAEMON_BLOCKCHAIN_HEIGHT_CACHE_TTL_SECONDS = 10;
@@ -211,10 +212,29 @@ PendingTransaction *Wallet::createTransaction(const QString &dst_addr, const QSt
     Bitmonero::PendingTransaction * ptImpl = m_walletImpl->createTransaction(
                 dst_addr.toStdString(), payment_id.toStdString(), amount, mixin_count,
                 static_cast<Bitmonero::PendingTransaction::Priority>(priority));
-    PendingTransaction * result = new PendingTransaction(ptImpl, this);
+    PendingTransaction * result = new PendingTransaction(ptImpl, m_walletManager);
     return result;
 }
 
+
+void Wallet::createTransactionAsync(const QString &dst_addr, const QString &payment_id,
+                               quint64 amount, quint32 mixin_count,
+                               PendingTransaction::Priority priority)
+{
+    QFuture<PendingTransaction*> future = QtConcurrent::run(this, &Wallet::createTransaction,
+                                  dst_addr, payment_id,amount, mixin_count, priority);
+    QFutureWatcher<PendingTransaction*> * watcher = new QFutureWatcher<PendingTransaction*>();
+    watcher->setFuture(future);
+    connect(watcher, &QFutureWatcher<PendingTransaction*>::finished,
+            this, [this, watcher]() {
+        QFuture<PendingTransaction*> future = watcher->future();
+        watcher->deleteLater();
+        emit transactionCreated(future.result());
+    });
+}
+
+
+
 void Wallet::disposeTransaction(PendingTransaction *t)
 {
     m_walletImpl->disposeTransaction(t->m_pimpl);
@@ -287,6 +307,7 @@ Wallet::Wallet(Bitmonero::Wallet *w, QObject *parent)
 {
     m_history = new TransactionHistory(m_walletImpl->history(), this);
     m_walletImpl->setListener(new WalletListenerImpl(this));
+    m_walletManager = parent;
 }
 
 Wallet::~Wallet()
diff --git a/src/libwalletqt/Wallet.h b/src/libwalletqt/Wallet.h
index 458dea90..a50a895f 100644
--- a/src/libwalletqt/Wallet.h
+++ b/src/libwalletqt/Wallet.h
@@ -125,6 +125,10 @@ public:
     Q_INVOKABLE PendingTransaction * createTransaction(const QString &dst_addr, const QString &payment_id,
                                                        quint64 amount, quint32 mixin_count,
                                                        PendingTransaction::Priority priority);
+    //! creates async transaction
+    Q_INVOKABLE void createTransactionAsync(const QString &dst_addr, const QString &payment_id,
+                                            quint64 amount, quint32 mixin_count,
+                                            PendingTransaction::Priority priority);
     //! deletes transaction and frees memory
     Q_INVOKABLE void disposeTransaction(PendingTransaction * t);
 
@@ -166,6 +170,8 @@ signals:
     void newBlock(quint64 height);
     void historyModelChanged() const;
 
+    // emitted when transaction is created async
+    void transactionCreated(PendingTransaction * transaction);
 
 private:
     Wallet(QObject * parent = nullptr);
@@ -188,6 +194,7 @@ private:
     mutable QTime   m_daemonBlockChainTargetHeightTime;
     mutable quint64 m_daemonBlockChainTargetHeight;
     int     m_daemonBlockChainTargetHeightTtl;
+    QObject * m_walletManager;
 };