libsaria: Created a SourceModel class

The source model class is used to more tightly control how songs are
inserted into the UI.  I provide an insert() function that the library's
for_each() function can take advantage of.  This allows me to directly
insert songs into the UI rather than having to use a static function as
the "middle man"

include/libsaria/library.h

@@ -2,6 +2,7 @@
 #define LIBSARIA_LIBRARY_H
 
 #include <libsaria/track.h>
+#include <libsaria/model.h>
 
 #include <list>
 #include <string>
@@ -26,7 +27,7 @@ namespace libsaria
 		void remove_path(string);
 		void play_id(ino_t &);
 		void get_info(ino_t &, void(*)(Track &));
-		void for_each(void (*)(Track &));
+		void for_each(SourceModel *);
 		void for_each_path(void (*)(struct PathInfo &));
 
 		unsigned int size();

include/libsaria/model.h

@@ -0,0 +1,19 @@
+#ifndef LIBSARIA_SOURCE_H
+#define LIBSARIA_SOURCE_H
+
+#include <libsaria/track.h>
+
+namespace libsaria
+{
+
+	class SourceModel
+	{
+		public:
+			SourceModel();
+			virtual ~SourceModel() = 0;
+
+			virtual void insert(Track &) = 0;
+	};
+}
+
+#endif /* LIBSARIA_SOURCE_H */

libsaria/library/library.cpp

@@ -4,6 +4,7 @@
 using namespace std;
 
 #include <libsaria/audio.h>
+#include <libsaria/model.h>
 #include <libsaria/callback.h>
 #include <libsaria/library.h>
 #include "library.h"
@@ -24,13 +25,13 @@ LibraryPath *get_library_path(string dir)
 	return NULL;
 }
 
-void LibraryPath::for_each(void (*ins_func)(Track &))
+void LibraryPath::for_each(libsaria::SourceModel *model)
 {
 	map<ino_t, TrackTag>::iterator it;
 
 	for (it = file_map.begin(); it != file_map.end(); it++) {
 		Track track = Track(it->first, &it->second);
-		ins_func(track);
+		model->insert(track);
 	}
 }
 
@@ -67,11 +68,11 @@ bool LibraryPath::play_id(ino_t &id)
 namespace libsaria
 {
 
-	void library::for_each(void (*ins_func)(Track &))
+	void library::for_each(SourceModel *model)
 	{
 		map<string, LibraryPath>::iterator it;
 		for (it = path_map.begin(); it != path_map.end(); it++)
-			it->second.for_each(ins_func);
+			it->second.for_each(model);
 	}
 
 	void library::for_each_path(void (*info_func)(struct library::PathInfo &))

libsaria/library/library.h

@@ -6,6 +6,7 @@
 using namespace std;
 
 #include <libsaria/library.h>
+#include <libsaria/model.h>
 #include <libsaria/path.h>
 
 class LibraryPath
@@ -19,7 +20,7 @@ class LibraryPath
 		LibraryPath(InFile &, string);
 		~LibraryPath();
 
-		void for_each(void (*)(Track &));
+		void for_each(libsaria::SourceModel *);
 		void get_info(void (*)(struct libsaria::library::PathInfo &));
 		bool get_info_id(ino_t &, void (*)(Track &));
 		void insert_track(ino_t &, TrackTag &);

libsaria/model.cpp

@@ -0,0 +1,9 @@
+
+#include <libsaria/model.h>
+
+namespace libsaria
+{
+	SourceModel::SourceModel(){}
+	SourceModel::~SourceModel(){}
+};
+