[Qt] ClientModel add method to get the height of the header chain

Author: jonasschnelli

src/qt/clientmodel.cpp

@@ -68,6 +68,14 @@ int ClientModel::getNumBlocks() const
     return chainActive.Height();
 }
 
+int ClientModel::getHeaderHeight() const
+{
+    LOCK(cs_main);
+    if (!pindexBestHeader)
+        return 0;
+    return pindexBestHeader->nHeight;
+}
+
 quint64 ClientModel::getTotalBytesRecv() const
 {
     return CNode::GetTotalBytesRecv();

src/qt/clientmodel.h

@@ -51,6 +51,7 @@ class ClientModel : public QObject
     //! Return number of connections, default is in- and outbound (total)
     int getNumConnections(unsigned int flags = CONNECTIONS_ALL) const;
     int getNumBlocks() const;
+    int getHeaderHeight() const;
 
     //! Return number of transactions in the mempool
     long getMempoolSize() const;