qml: Add targetBlocks property to WalletQmlModel

This property will be used to set the target number of
blocks for the standard fees listed in the UI drop down
menu.

Author: johnny9

src/qml/models/walletqmlmodel.cpp

@@ -205,3 +205,16 @@ std::vector<COutPoint> WalletQmlModel::listSelectedCoins() const
 {
     return m_coin_control.ListSelected();
 }
+
+unsigned int WalletQmlModel::feeTargetBlocks() const
+{
+    return m_coin_control.m_confirm_target.value_or(wallet::DEFAULT_TX_CONFIRM_TARGET);
+}
+
+void WalletQmlModel::setFeeTargetBlocks(unsigned int target_blocks)
+{
+    if (m_coin_control.m_confirm_target != target_blocks) {
+        m_coin_control.m_confirm_target = target_blocks;
+        Q_EMIT feeTargetBlocksChanged();
+    }
+}

src/qml/models/walletqmlmodel.h

@@ -28,6 +28,7 @@ class WalletQmlModel : public QObject
     Q_PROPERTY(CoinsListModel* coinsListModel READ coinsListModel CONSTANT)
     Q_PROPERTY(SendRecipient* sendRecipient READ sendRecipient CONSTANT)
     Q_PROPERTY(WalletQmlModelTransaction* currentTransaction READ currentTransaction NOTIFY currentTransactionChanged)
+    Q_PROPERTY(unsigned int targetBlocks READ feeTargetBlocks WRITE setFeeTargetBlocks NOTIFY feeTargetBlocksChanged)
 
 public:
     WalletQmlModel(std::unique_ptr<interfaces::Wallet> wallet, QObject* parent = nullptr);
@@ -63,11 +64,14 @@ class WalletQmlModel : public QObject
     void unselectCoin(const COutPoint& output);
     bool isSelectedCoin(const COutPoint& output);
     std::vector<COutPoint> listSelectedCoins() const;
+    unsigned int feeTargetBlocks() const;
+    void setFeeTargetBlocks(unsigned int target_blocks);
 
 Q_SIGNALS:
     void nameChanged();
     void balanceChanged();
     void currentTransactionChanged();
+    void feeTargetBlocksChanged();
 
 private:
     std::unique_ptr<interfaces::Wallet> m_wallet;