Report when the GUI is connected to a daemon with mismatched version

This will cause various errors confusing to the user, as they stem
for the daemon returning replies with missing information, etc.

LeftPanel.qml

@@ -28,6 +28,7 @@
 
 import QtQuick 2.2
 import QtGraphicalEffects 1.0
+import moneroComponents.Wallet 1.0
 import "components"
 
 Rectangle {
@@ -356,7 +357,7 @@ Rectangle {
             anchors.left: parent.left
             anchors.right: parent.right
             anchors.bottom: (daemonProgress.visible)? daemonProgress.top : parent.bottom;
-            connected: false
+            connected: Wallet.ConnectionStatus_Disconnected
         }
 
         DaemonProgress {

components/NetworkStatusItem.qml

@@ -27,10 +27,35 @@
 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import QtQuick 2.0
+import moneroComponents.Wallet 1.0
 
 Row {
     id: item
-    property bool connected: false
+    property var connected: Wallet.ConnectionStatus_Disconnected
+
+    function getConnectionStatusImage(status) {
+        if (status == Wallet.ConnectionStatus_Connected)
+            return "../images/statusConnected.png"
+        else
+            return "../images/statusDisconnected.png"
+    }
+
+    function getConnectionStatusColor(status) {
+        if (status == Wallet.ConnectionStatus_Connected)
+            return "#FF6C3B"
+        else
+            return "#AAAAAA"
+    }
+
+    function getConnectionStatusString(status) {
+        if (status == Wallet.ConnectionStatus_Connected)
+            return qsTr("Connected")
+        if (status == Wallet.ConnectionStatus_WrongVersion)
+            return qsTr("Wrong version")
+        if (status == Wallet.ConnectionStatus_Disconnected)
+            return qsTr("Disconnected")
+        return qsTr("Invalid connection status")
+    }
 
     Item {
         id: iconItem
@@ -40,8 +65,7 @@ Row {
 
         Image {
             anchors.centerIn: parent
-            source: item.connected ? "../images/statusConnected.png" :
-                                     "../images/statusDisconnected.png"
+            source: getConnectionStatusImage(item.connected)
         }
     }
 
@@ -62,8 +86,8 @@ Row {
             anchors.left: parent.left
             font.family: "Arial"
             font.pixelSize: 18
-            color: item.connected ? "#FF6C3B" : "#AAAAAA"
-            text: (item.connected ? qsTr("Connected") : qsTr("Disconnected")) + translationManager.emptyString
+            color: getConnectionStatusColor(item.connected)
+            text: getConnectionStatusString(item.connected) + translationManager.emptyString
         }
     }
 }

main.qml

@@ -264,7 +264,7 @@ ApplicationWindow {
 
         // Daemon fully synced
         // TODO: implement onDaemonSynced or similar in wallet API and don't start refresh thread before daemon is synced
-        daemonSynced = (currentWallet.connected && dCurrentBlock >= dTargetBlock)
+        daemonSynced = (currentWallet.connected != Wallet.ConnectionStatus_Disconnected && dCurrentBlock >= dTargetBlock)
 
 
 
@@ -387,7 +387,10 @@ ApplicationWindow {
         if (transaction.status !== PendingTransaction.Status_Ok) {
             console.error("Can't create transaction: ", transaction.errorString);
             informationPopup.title = qsTr("Error") + translationManager.emptyString;
-            informationPopup.text  = qsTr("Can't create transaction: ") + transaction.errorString
+            if (currentWallet.connected == Wallet.ConnectionStatus_WrongVersion)
+                informationPopup.text  = qsTr("Can't create transaction: Wrong daemon version: ") + transaction.errorString
+            else
+                informationPopup.text  = qsTr("Can't create transaction: ") + transaction.errorString
             informationPopup.icon  = StandardIcon.Critical
             informationPopup.onCloseCallback = null
             informationPopup.open();

src/libwalletqt/Wallet.cpp

@@ -86,9 +86,9 @@ Wallet::Status Wallet::status() const
     return static_cast<Status>(m_walletImpl->status());
 }
 
-bool Wallet::connected() const
+Wallet::ConnectionStatus Wallet::connected() const
 {
-    return m_walletImpl->connected();
+    return static_cast<ConnectionStatus>(m_walletImpl->connected());
 }
 
 bool Wallet::synchronized() const

src/libwalletqt/Wallet.h

@@ -22,7 +22,7 @@ class Wallet : public QObject
     Q_PROPERTY(QString seed READ getSeed)
     Q_PROPERTY(QString seedLanguage READ getSeedLanguage)
     Q_PROPERTY(Status status READ status)
-    Q_PROPERTY(bool connected READ connected)
+    Q_PROPERTY(ConnectionStatus connected READ connected)
     Q_PROPERTY(bool synchronized READ synchronized)
     Q_PROPERTY(QString errorString READ errorString)
     Q_PROPERTY(QString address READ address)
@@ -42,6 +42,14 @@ public:
 
     Q_ENUM(Status)
 
+    enum ConnectionStatus {
+        ConnectionStatus_Connected       = Bitmonero::Wallet::ConnectionStatus_Connected,
+        ConnectionStatus_Disconnected    = Bitmonero::Wallet::ConnectionStatus_Disconnected,
+        ConnectionStatus_WrongVersion    = Bitmonero::Wallet::ConnectionStatus_WrongVersion
+    };
+
+    Q_ENUM(ConnectionStatus)
+
     //! returns mnemonic seed
     QString getSeed() const;
 
@@ -54,8 +62,8 @@ public:
     //! returns last operation's status
     Status status() const;
 
-    //! returns true if wallet connected
-    bool connected() const;
+    //! returns whether the wallet is connected, and version status
+    ConnectionStatus connected() const;
 
     //! returns true if wallet was ever synchronized
     bool synchronized() const;