qt: Refactor ShowProgress to DispatchNotifications

Author: promag

src/qt/transactiontablemodel.cpp

@@ -96,13 +96,14 @@ class TransactionTablePriv
      */
     QList<TransactionRecord> cachedWallet;
 
-    bool fQueueNotifications = false;
     /** True when model finishes loading all wallet transactions on start */
     bool m_loaded = false;
+    /** True when transactions are being notified, for instance when scanning */
+    bool m_loading = false;
     std::vector< TransactionNotification > vQueueNotifications;
 
     void NotifyTransactionChanged(const uint256 &hash, ChangeType status);
-    void ShowProgress(const std::string &title, int nProgress);
+    void DispatchNotifications();
 
     /* Query entire wallet anew from core.
      */
@@ -721,22 +722,19 @@ void TransactionTablePriv::NotifyTransactionChanged(const uint256 &hash, ChangeT
 
     TransactionNotification notification(hash, status, showTransaction);
 
-    if (fQueueNotifications)
+    if (m_loading)
     {
         vQueueNotifications.push_back(notification);
         return;
     }
     notification.invoke(parent);
 }
 
-void TransactionTablePriv::ShowProgress(const std::string &title, int nProgress)
+void TransactionTablePriv::DispatchNotifications()
 {
-    if (nProgress == 0)
-        fQueueNotifications = true;
+    if (m_loading) return;
 
-    if (nProgress == 100)
     {
-        fQueueNotifications = false;
         if (vQueueNotifications.size() > 10) { // prevent balloon spam, show maximum 10 balloons
             bool invoked = QMetaObject::invokeMethod(parent, "setProcessingQueuedTransactions", Qt::QueuedConnection, Q_ARG(bool, true));
             assert(invoked);
@@ -758,7 +756,10 @@ void TransactionTableModel::subscribeToCoreSignals()
 {
     // Connect signals to wallet
     m_handler_transaction_changed = walletModel->wallet().handleTransactionChanged(std::bind(&TransactionTablePriv::NotifyTransactionChanged, priv, std::placeholders::_1, std::placeholders::_2));
-    m_handler_show_progress = walletModel->wallet().handleShowProgress(std::bind(&TransactionTablePriv::ShowProgress, priv, std::placeholders::_1, std::placeholders::_2));
+    m_handler_show_progress = walletModel->wallet().handleShowProgress([this](const std::string&, int progress) {
+        priv->m_loading = progress < 100;
+        priv->DispatchNotifications();
+    });
 }
 
 void TransactionTableModel::unsubscribeFromCoreSignals()