libsaria: Added LIBRARY_REFRESH callback

This callback is triggered during a library update to tell the UI that a
new version of the library is available.

include/libsaria/callback.h

@@ -6,6 +6,7 @@ enum callback_t {
 	PAUSE,
 	VOLUME,
 	IDLE_TASK_QUEUED,
+	LIBRARY_REFRESH,
 };
 
 void register_callback(callback_t, void (*)());

include/libsaria/library.h

@@ -5,5 +5,6 @@
 using namespace std;
 
 void libsaria_add_library(string);
+void libsaria_refresh_library();
 
 #endif /* LIBSARIA_LIBRARY_H */

libsaria/library.cpp

@@ -1,5 +1,6 @@
 
 #include "library/library.h"
+#include <libsaria/callback.h>
 
 static Library library;
 
@@ -8,3 +9,8 @@ void libsaria_add_library(string dir)
 	library.add_path(dir);
 	library.update_path(dir);
 }
+
+void libsaria_refresh_library()
+{
+	trigger_callback(LIBRARY_REFRESH);
+}

libsaria/library/update.cpp

@@ -3,6 +3,7 @@
 #include <libsaria/idle.h>
 #include <libsaria/path.h>
 #include <libsaria/tags.h>
+#include <libsaria/library.h>
 
 #include "library.h"
 #include "path.h"
@@ -77,5 +78,6 @@ void ScanTask::run_task()
 	if (end_dir == true) {
 		print("Library path size: ");
 		println(library->size());
+		libsaria_refresh_library();
 	}
 }