libsaria: Load library through an idle task

This allows me to draw the UI first and load the library once that has
finished.  This should make Ocarina feel more responsive.

libsaria/library/file.cpp

@@ -29,26 +29,40 @@ void LibraryPath::save(OutFile &out)
 		it->save(out);
 }
 
+static void do_load()
+{
+	unsigned int size;
+	string dir;
+	list<LibraryPath> *path_list = libsaria::library::get_path_list();
+	InFile in("library.lib");
+
+	if (!in.good())
+		return;
+	size = in.read_lui();
+
+	for (unsigned int i = 0; i < size; i++) {
+		dir = in.read_str();
+		path_list->push_back(LibraryPath(in, dir));
+	}
+
+	libsaria::library::rebuild_list();
+	libsaria::library::refresh();
+	libsaria::library::reindex();
+}
+
+LoadTask::LoadTask()  {}
+LoadTask::~LoadTask() {}
+void LoadTask::run_task()
+{
+	do_load();
+}
+
 namespace libsaria
 {
 	void library::load()
 	{
-		unsigned int size;
-		string dir;
-		list<LibraryPath> *path_list = get_path_list();
-		InFile in("library.lib");
-
-		if (!in.good())
-			return;
-		size = in.read_lui();
-
-		for (unsigned int i = 0; i < size; i++) {
-			dir = in.read_str();
-			path_list->push_back(LibraryPath(in, dir));
-		}
-
-		rebuild_list();
-		reindex();
+		LoadTask *task = new LoadTask();
+		task->queue();
 	}
 
 	void library::save()

libsaria/library/library.h

@@ -31,6 +31,14 @@ class LibraryPath
 		unsigned int size();
 };
 
+class LoadTask : public IdleTask
+{
+	public:
+		LoadTask();
+		~LoadTask();
+		void run_task();
+};
+
 class ScanTask : public IdleTask
 {
 	private: