Added base of code to allow sending backend updates to connected clients.

src/WebInterface.h

@@ -22,6 +22,8 @@
 
 #include <Wt/WApplication>
 #include "GroovePlayer.h"
+#include "db/AudioTrack.h"
+#include "db/User.h"
 
 class WebInterface : public Wt::WApplication
 {
@@ -29,6 +31,10 @@ public:
     WebInterface(const Wt::WEnvironment& env);
     ~WebInterface();
     void loginCompleted();
+    void playPauseActionFromServer(User* userPausing);
+    void songChangedFromServer(AudioTrack* nextTrack);
+    void skipVotedFromServer(User* userRequestingToSkipCurrentTrack);
+    void voteUpdateFromServer(User* userVoting, bool forSkip);
 private:
     struct internal;
     internal* priv_int = 0;