diff --git a/include/wlr/types/wlr_data_device.h b/include/wlr/types/wlr_data_device.h
index 6c5dc097..b4aa024a 100644
--- a/include/wlr/types/wlr_data_device.h
+++ b/include/wlr/types/wlr_data_device.h
@@ -36,6 +36,12 @@ struct wlr_data_source {
 	uint32_t compositor_action;
 	bool actions_set;
 
+	void (*accept)(struct wlr_data_source *source, uint32_t serial,
+			const char *mime_type);
+	void (*send)(struct wlr_data_source *source, const char *mime_type,
+			int32_t fd);
+	void (*cancel)(struct wlr_data_source *source);
+
 	struct {
 		struct wl_signal destroy;
 	} events;
@@ -72,4 +78,7 @@ struct wlr_data_device_manager *wlr_data_device_manager_create(
  */
 void wlr_seat_handle_send_selection(struct wlr_seat_handle *handle);
 
+void wlr_seat_set_selection(struct wlr_seat *seat,
+		struct wlr_data_source *source, uint32_t serial);
+
 #endif
diff --git a/types/wlr_data_device.c b/types/wlr_data_device.c
index 5c6d5717..d5782830 100644
--- a/types/wlr_data_device.c
+++ b/types/wlr_data_device.c
@@ -82,18 +82,18 @@ static void data_offer_update_action(struct wlr_data_offer *offer) {
 	}
 }
 
-static void data_source_accept(struct wlr_data_source *source,
-		uint32_t time, const char *mime_type) {
+static void client_data_source_accept(struct wlr_data_source *source,
+		uint32_t serial, const char *mime_type) {
 	wl_data_source_send_target(source->resource, mime_type);
 }
 
-static void data_source_send(struct wlr_data_source *source,
+static void client_data_source_send(struct wlr_data_source *source,
 		const char *mime_type, int32_t fd) {
 	wl_data_source_send_send(source->resource, mime_type, fd);
 	close(fd);
 }
 
-static void data_source_cancel(struct wlr_data_source *source) {
+static void client_data_source_cancel(struct wlr_data_source *source) {
 	wl_data_source_send_cancelled(source->resource);
 }
 
@@ -108,7 +108,7 @@ static void data_offer_accept(struct wl_client *client,
 
 	// TODO check that client is currently focused by the input device
 
-	data_source_accept(offer->source, serial, mime_type);
+	offer->source->accept(offer->source, serial, mime_type);
 	offer->source->accepted = (mime_type != NULL);
 }
 
@@ -117,7 +117,7 @@ static void data_offer_receive(struct wl_client *client,
 	struct wlr_data_offer *offer = wl_resource_get_user_data(resource);
 
 	if (offer->source && offer == offer->source->offer) {
-		data_source_send(offer->source, mime_type, fd);
+		offer->source->send(offer->source, mime_type, fd);
 	} else {
 		close(fd);
 	}
@@ -290,7 +290,7 @@ static void seat_handle_selection_data_source_destroy(
 	// TODO emit selection signal
 }
 
-static void wlr_seat_set_selection(struct wlr_seat *seat,
+void wlr_seat_set_selection(struct wlr_seat *seat,
 		struct wlr_data_source *source, uint32_t serial) {
 	if (seat->selection_source &&
 			seat->selection_serial - serial < UINT32_MAX / 2) {
@@ -298,7 +298,7 @@ static void wlr_seat_set_selection(struct wlr_seat *seat,
 	}
 
 	if (seat->selection_source) {
-		data_source_cancel(seat->selection_source);
+		seat->selection_source->cancel(seat->selection_source);
 		seat->selection_source = NULL;
 		wl_list_remove(&seat->selection_data_source_destroy.link);
 	}
@@ -701,6 +701,10 @@ static void data_device_manager_create_data_source(struct wl_client *client,
 		return;
 	}
 
+	source->accept = client_data_source_accept;
+	source->send = client_data_source_send;
+	source->cancel = client_data_source_cancel;
+
 	wl_array_init(&source->mime_types);
 	wl_signal_init(&source->events.destroy);