notifications(fix): notify only the contact that the message applies to

- prevents the ContactViewModel's connected delegate that updates upon
  text message reception, from incrementing all contact's unread message
  count

Change-Id: Ief09bfd077cf1e28ecc23a2df1cc68b4eddf3bbd
Tuleap: #982

Contact.cpp

@@ -75,8 +75,6 @@ Contact::Contact(String^ name,
 
     /* connect to delegate */
     ContactsViewModel::instance->notifyNewConversationMessage += ref new NotifyNewConversationMessage([&] () {
-        notificationNewMessage = Windows::UI::Xaml::Visibility::Visible;
-        unreadMessages_++;
         PropertyChanged(this, ref new PropertyChangedEventArgs("unreadMessages"));
     });
     ContactsViewModel::instance->newContactSelected += ref new RingClientUWP::NewContactSelected([&]() {
@@ -88,6 +86,14 @@ Contact::Contact(String^ name,
     });
 }
 
+void
+Contact::addNotifyNewConversationMessage()
+{
+    notificationNewMessage = Windows::UI::Xaml::Visibility::Visible;
+    unreadMessages_++;
+    RingDebug::instance->print(Utils::toString(unreadMessages_.ToString()));
+}
+
 void
 Contact::NotifyPropertyChanged(String^ propertyName)
 {

Contact.h

@@ -75,6 +75,7 @@ internal:
     void        saveConversationToFile();
     String^     StringifyConversation();
     void        DestringifyConversation(String^ data);
+    void        addNotifyNewConversationMessage();
 
 protected:
     void NotifyPropertyChanged(String^ propertyName);

ContactsViewModel.cpp

@@ -55,8 +55,12 @@ ContactsViewModel::ContactsViewModel()
         /* save contacts conversation to disk */
         contact->saveConversationToFile();
 
-        if (contact->ringID_ == from && isNotSelected)
+        if (contact->ringID_ == from && isNotSelected) {
+            // increment contact's unread message count
+            contact->addNotifyNewConversationMessage();
+            // update the xaml for all
             notifyNewConversationMessage();
+        }
     });
 
 }

SmartPanel.xaml.cpp

@@ -44,11 +44,6 @@ SmartPanel::SmartPanel()
 
     _accountsList_->ItemsSource = AccountsViewModel::instance->accountsList;
     _smartList_->ItemsSource = ContactsViewModel::instance->contactsList;
-
-    /* connect delegate */
-    ContactsViewModel::instance->notifyNewConversationMessage += ref new NotifyNewConversationMessage([&]() {
-        //_visualNotificationNewMessage_->Vi
-    });
 }
 
 void