Prevent items from being added twice

client/src/cart_item.c

@@ -96,13 +96,16 @@ GtkWidget *yacos_cart_item_new(void)
 void yacos_cart_item_set_id(YacosCartItem *self, yacos_tag_id tag_id)
 {
 	gchar *id_str;
+	gchar *id_str2;
 
 	self->priv.tag_id = tag_id;
 
 	id_str = yacos_tag_id_to_str(tag_id);
-	gtk_label_set_text(GTK_LABEL(self->priv.label_id), id_str);
+	id_str2 = g_strdup_printf("#%s", id_str);
-
 	g_free(id_str);
+	gtk_label_set_text(GTK_LABEL(self->priv.label_id), id_str2);
+
+	g_free(id_str2);
 }
 
 static void yacos_cart_item_fetch_meta_cb (SoupSession *session, SoupMessage *msg, gpointer user_data)
@@ -151,6 +154,11 @@ void yacos_cart_item_fetch_meta(YacosCartItem *self)
 	gchar *url;
 	gchar *id_str;
 
+	gtk_label_set_text(GTK_LABEL(self->priv.label_title), "Loading ...");
+	gtk_label_set_text(GTK_LABEL(self->priv.label_description), "");
+	gtk_label_set_text(GTK_LABEL(self->priv.label_comment), "");
+
+
 	id_str = yacos_tag_id_to_str(self->priv.tag_id);
 
 	url = g_strdup_printf("%s?meta&id=%s", self->priv.api.url_base, id_str);
@@ -163,3 +171,13 @@ void yacos_cart_item_fetch_meta(YacosCartItem *self)
 				   yacos_cart_item_fetch_meta_cb,
 				   self);
 }
+
+void yacos_cart_item_fetch_image(YacosCartItem *self)
+{
+	return;
+}
+
+yacos_tag_id yacos_cart_item_get_id(YacosCartItem *self)
+{
+	return self->priv.tag_id;
+}

client/src/cart_item.h

@@ -16,6 +16,7 @@ GtkWidget *yacos_cart_item_new(void);
 void yacos_cart_item_set_id(YacosCartItem *self, yacos_tag_id tag_id);
 void yacos_cart_item_fetch_meta(YacosCartItem *self);
 void yacos_cart_item_fetch_image(YacosCartItem *self);
+yacos_tag_id yacos_cart_item_get_id(YacosCartItem *self);
 
 G_END_DECLS
 

client/src/main.c

@@ -30,7 +30,7 @@ static void activate(GtkApplication* app, gpointer user_data)
 	g_signal_connect(scanner, "newtag",
 			 (GCallback) mainWindow_scan_tags, (*mainWindow));
 
-	mainWindow_scan_tags(scanner, *mainWindow); // TODO: For testing only
+	//mainWindow_scan_tags(scanner, *mainWindow); // TODO: For testing only
 }
 
 

client/src/main_window.c

@@ -29,8 +29,28 @@ void mainWindow_scan_tags(YacosScanner *scanner, struct mainWindow *mainWindow)
 	// TODO: For testing only
 	gtk_stack_set_visible_child(mainWindow->stack_main, mainWindow->page_cart.box);
 	GtkWidget *le = yacos_cart_item_new();
-	yacos_cart_item_set_id(YACOS_CART_ITEM(le), 123);
+	GList *l;
-	yacos_cart_item_fetch_meta(YACOS_CART_ITEM(le));
+	yacos_tag_id tag_id;
-	gtk_list_box_insert(mainWindow->page_cart.list, le, -1);
+
-	gtk_widget_show(le);
+	GList *stack_children;
+	GList *ll;
+	gboolean found = 0;
+
+	for (l = yacos_scanner_get_present_tags(scanner); l != NULL; l = l->next) {
+		tag_id = ((struct yacos_scanner_tag*) l->data)->tag_id;
+		stack_children = gtk_container_get_children(mainWindow->page_cart.list);
+		for (ll = stack_children; ll != NULL; ll = ll->next) {
+			if (yacos_cart_item_get_id(((YacosCartItem *) ll->data)) == tag_id) {
+				found = 1;
+				break;
+			}
+		}
+		if (found)
+			continue;
+		yacos_cart_item_set_id(YACOS_CART_ITEM(le), tag_id);
+		yacos_cart_item_fetch_meta(YACOS_CART_ITEM(le));
+		yacos_cart_item_fetch_image(YACOS_CART_ITEM(le));
+		gtk_list_box_insert(mainWindow->page_cart.list, le, -1);
+		gtk_widget_show(le);
+	}
 }

client/src/scanner.c

@@ -100,9 +100,9 @@ static int yacos_scanner_list(YacosScanner *self)
 
 	if (new_tags) {
 		for (l = self->detected_tags; l != NULL; l = l->next) {
-			g_warning("Found %x (%d)",
+			g_info("Found %X (%d)",
-				  ((struct yacos_scanner_tag*)l->data)->tag_id,
+			       ((struct yacos_scanner_tag*)l->data)->tag_id,
-				  ((struct yacos_scanner_tag*)l->data)->tag_type);
+			       ((struct yacos_scanner_tag*)l->data)->tag_type);
 		}
 	}
 
@@ -152,8 +152,6 @@ static void yacos_scanner_init(YacosScanner *self)
 {
 	self->detected_tags = NULL;
 
-	return; // TODO: Disabled during development
-
 	g_debug("Using libnfc %s", nfc_version());
 	nfc_init(&self->nfc_ctx);
 	if (!self->nfc_ctx) {
@@ -177,5 +175,11 @@ YacosScanner *yacos_scanner_new(void)
 // Free afterwards using g_free
 gchar *yacos_tag_id_to_str(yacos_tag_id tag_id)
 {
-	return g_strdup_printf("%d", tag_id);
+	return g_strdup_printf("%X", tag_id);
+}
+
+
+GList *yacos_scanner_get_present_tags(YacosScanner *scanner)
+{
+	return scanner->detected_tags;
 }

client/src/scanner.h

@@ -25,6 +25,7 @@ struct yacos_scanner_tag {
 };
 
 gchar *yacos_tag_id_to_str(yacos_tag_id tag_id);
+GList *yacos_scanner_get_present_tags(YacosScanner *scanner);
 
 G_END_DECLS