libsaria: Generic LoadFile() task

This was specific to the library namespace, but I think it makes more
sense to exist as a global class definition that can be reused by
others.

include/libsaria/files.h

@@ -19,6 +19,17 @@ class SaveTask : public IdleTask
 		void run_task();
 };
 
+class LoadTask : public IdleTask
+{
+	private:
+		void (*load_func)();
+
+	public:
+		LoadTask(void (*func)());
+		~LoadTask();
+		void run_task();
+};
+
 class OutFile : public ofstream
 {
 	public:

libsaria/library/file.cpp

@@ -28,21 +28,12 @@ static void do_load()
 	libsaria::library::refresh();
 }
 
-class LoadTask : public IdleTask
-{
-	public:
-		void run_task()
-		{
-			do_load();
-		}
-};
-
 namespace libsaria
 {
 
 	void library::load()
 	{
-		LoadTask *task = new LoadTask();
+		LoadTask *task = new LoadTask(do_load);
 		task->queue();
 	}
 

libsaria/path/files.cpp

@@ -16,6 +16,20 @@ void SaveTask::run_task()
 	save_func();
 }
 
+LoadTask::LoadTask(void (*func)())
+{
+	load_func = func;
+}
+
+LoadTask::~LoadTask()
+{
+}
+
+void LoadTask::run_task()
+{
+	load_func();
+}
+
 OutFile::OutFile(string path)
 {
 	string out_file = get_saria_dir() + "/" + path;