wl-shell: class instead of app_id

include/sway/view.h

@@ -42,6 +42,7 @@ enum sway_view_type {
 enum sway_view_prop {
 	VIEW_PROP_TITLE,
 	VIEW_PROP_APP_ID,
+	VIEW_PROP_CLASS,
 	VIEW_PROP_INSTANCE,
 };
 

sway/desktop/wl_shell.c

@@ -21,7 +21,7 @@ static const char *get_prop(struct sway_view *view, enum sway_view_prop prop) {
 	switch (prop) {
 	case VIEW_PROP_TITLE:
 		return view->wlr_wl_shell_surface->title;
-	case VIEW_PROP_APP_ID:
+	case VIEW_PROP_CLASS:
 		return view->wlr_wl_shell_surface->class;
 	default:
 		return NULL;