Notify when library paths have been updated

This gives the UI a chance to set the new path or new size.  I also
updated Ocarina to show the library path size in its liststore row.

Signed-off-by: Bryan Schumaker <bjschuma@gmail.com>

include/libsaria/library.h

@@ -25,6 +25,7 @@ namespace libsaria
 				~Driver();
 
 				virtual void path_added(Path *) = 0;
+				virtual void path_updated(Path *) = 0;
 		};
 
 		void add_path(string);

libsaria/library/library.cpp

@@ -13,7 +13,7 @@ using namespace std;
 #include <libsaria/stack.h>*/
 
 static list<struct libsaria::library::Path> path_list;
-static list<libsaria::library::Driver *> driver_list;
+list<libsaria::library::Driver *> driver_list;
 /*list<libsaria::LibraryPath> path_list;
 libsaria::Playlist lib_playlist(PL_RANDOM | PL_SEQUENTIAL | PL_FILTER);
 static map<sid_t, libsaria::Track *> lookup_map;

libsaria/library/library.h

@@ -3,6 +3,7 @@
 
 #include <libsaria/library.h>
 
+extern list<libsaria::library::Driver *>driver_list;
 void update_path(struct libsaria::library::Path *);
 /*#include <string>
 using namespace std;

libsaria/library/update.cpp

@@ -3,6 +3,7 @@
 #include <libsaria/track.h>
 #include <libsaria/print.h>
 #include <libsaria/idle.h>
+#include "library.h"
 
 static unsigned int MAX_SCAN = 20;
 
@@ -52,9 +53,13 @@ ScanTask::~ScanTask()
 void ScanTask::run_task()
 {
 	list<string>::iterator it;
-	for (it = file_list.begin(); it != file_list.end(); it++) {
+	list<libsaria::library::Driver *>::iterator d_it;
+
+	for (it = file_list.begin(); it != file_list.end(); it++)
 		path->tracks.push_back(libsaria::Track(*it));
-	}
+
+	for (d_it = driver_list.begin(); d_it != driver_list.end(); d_it++)
+		(*d_it)->path_updated(path);
 }
 
 ReaddirTask::ReaddirTask(struct libsaria::library::Path *p)

ocarina/body/library.cpp

@@ -21,6 +21,7 @@ struct library_info {
 class LibraryDriver : public libsaria::library::Driver {
 	public:
 		void path_added(libsaria::library::Path *);
+		void path_updated(libsaria::library::Path *);
 };
 
 static LibraryDriver driver;
@@ -29,10 +30,32 @@ static GtkListStore *path_list;
 static struct library_info columns[] = {
 	library_info("Pointer",  G_TYPE_POINTER, false),
 	library_info("Filepath", G_TYPE_STRING,  true),
+	library_info("Size",     G_TYPE_UINT,    true),
 };
 
 static unsigned int NUM_COLUMNS = sizeof(columns) / sizeof(library_info);
 
+void LibraryDriver::path_updated(libsaria::library::Path *path)
+{
+	GtkTreeIter iter;
+	libsaria::library::Path *list_path;
+
+	/* get_iter_first() return FALSE if the liststore is empty */
+	if (!gtk_tree_model_get_iter_first(GTK_TREE_MODEL(path_list), &iter))
+		return;
+
+	do {
+		gtk_tree_model_get(GTK_TREE_MODEL(path_list), &iter, 0, &list_path, -1);
+		if (list_path == path) {
+			gtk_list_store_set(path_list, &iter,
+					   1, path->path.c_str(),
+					   2, path->tracks.size(),
+					   -1);
+			break;
+		};
+	} while (gtk_tree_model_iter_next(GTK_TREE_MODEL(path_list), &iter));
+}
+
 void LibraryDriver::path_added(libsaria::library::Path *path)
 {
 	GtkTreeIter iter;
@@ -41,6 +64,7 @@ void LibraryDriver::path_added(libsaria::library::Path *path)
 	gtk_list_store_set(path_list, &iter,
 			   0, path,
 			   1, path->path.c_str(),
+			   2, path->tracks.size(),
 			   -1);
 }