libsaria: Queue idle tasks from the task class

This is cleaner than calling an outside function since the task can
easily queue itself up.

include/libsaria/idle.h

@@ -7,6 +7,9 @@ class IdleTask
 		IdleTask();
 		virtual ~IdleTask() = 0;
 		virtual void run_task() = 0;
+
+		int queue();
+		int queue_front();
 };
 
 namespace libsaria

libsaria/idle/task.cpp

@@ -9,3 +9,12 @@ IdleTask::~IdleTask()
 {
 }
 
+int IdleTask::queue()
+{
+	return libsaria::queue_task(this);
+}
+
+int IdleTask::queue_front()
+{
+	return libsaria::queue_task_front(this);
+}

libsaria/library/path.cpp

@@ -44,7 +44,7 @@ void LibraryPath::insert_track(ino_t inode, TrackTag &tag)
 void LibraryPath::update()
 {
 	ScanTask *task = new ScanTask(this, path, false);
-	libsaria::queue_task(task);
+	task->queue();
 }
 
 unsigned int LibraryPath::size()
@@ -98,7 +98,7 @@ void ScanTask::run_task()
 	last = dirs.size() - 1;
 	for (it = dirs.begin(); it != dirs.end(); it++) {
 		scan = new ScanTask(library, dir + "/" + (*it).name, i == last);
-		libsaria::queue_task(scan);
+		scan->queue();
 		i++;
 	}
 
@@ -106,7 +106,7 @@ void ScanTask::run_task()
 		print("Library path size: ");
 		println(library->size());
 		save = new SaveTask(libsaria::library::save);
-		libsaria::queue_task_front(save);
+		save->queue_front();
 		libsaria::library::refresh();
 	}
 }