xwayland/selection: make xwm_selection_finish take a wlr_xwm_selection *

Previously it took a wlr_xwm *, which was a bit surprising in that it
freed members of wlr_xwm *, not just its respective selections.

include/xwayland/selection.h

@@ -77,6 +77,6 @@ bool primary_selection_source_is_xwayland(
 void xwm_seat_handle_start_drag(struct wlr_xwm *xwm, struct wlr_drag *drag);
 
 void xwm_selection_init(struct wlr_xwm *xwm);
-void xwm_selection_finish(struct wlr_xwm *xwm);
+void xwm_selection_finish(struct wlr_xwm_selection *selection);
 
 #endif

xwayland/selection/selection.c

@@ -5,7 +5,6 @@
 #include <string.h>
 #include <unistd.h>
 #include <wlr/types/wlr_data_device.h>
-#include <wlr/types/wlr_primary_selection.h>
 #include <wlr/util/log.h>
 #include <xcb/xfixes.h>
 #include "xwayland/selection.h"
@@ -245,55 +244,20 @@ void xwm_selection_init(struct wlr_xwm *xwm) {
 	selection_init(xwm, &xwm->dnd_selection, xwm->atoms[DND_SELECTION]);
 }
 
-void xwm_selection_finish(struct wlr_xwm *xwm) {
-	if (!xwm) {
+void xwm_selection_finish(struct wlr_xwm_selection *selection) {
+	if (!selection) {
 		return;
 	}
 
-	struct wlr_xwm_selection *selections[] = {
-		&xwm->clipboard_selection,
-		&xwm->primary_selection,
-		&xwm->dnd_selection,
-	};
-
-	for (size_t i = 0; i < sizeof(selections)/sizeof(selections[0]); i++) {
-		struct wlr_xwm_selection *selection = selections[i];
-
 	struct wlr_xwm_selection_transfer *outgoing, *tmp;
 	wl_list_for_each_safe(outgoing, tmp, &selection->outgoing, outgoing_link) {
-			wlr_log(WLR_INFO, "destroyed pending transfer %ld/%p", i, outgoing);
+		wlr_log(WLR_INFO, "destroyed pending transfer %p", outgoing);
 		xwm_selection_transfer_destroy_outgoing(outgoing);
 	}
 
 	xwm_selection_transfer_finish(&selection->incoming);
 }
 
-	if (xwm->selection_window) {
-		xcb_destroy_window(xwm->xcb_conn, xwm->selection_window);
-	}
-
-	if (xwm->dnd_window) {
-		xcb_destroy_window(xwm->xcb_conn, xwm->dnd_window);
-	}
-
-	if (xwm->seat) {
-		if (xwm->seat->selection_source &&
-				data_source_is_xwayland(xwm->seat->selection_source)) {
-			wlr_seat_set_selection(xwm->seat, NULL,
-				wl_display_next_serial(xwm->xwayland->wl_display));
-		}
-
-		if (xwm->seat->primary_selection_source &&
-				primary_selection_source_is_xwayland(
-					xwm->seat->primary_selection_source)) {
-			wlr_seat_set_primary_selection(xwm->seat, NULL,
-				wl_display_next_serial(xwm->xwayland->wl_display));
-		}
-
-		wlr_xwayland_set_seat(xwm->xwayland, NULL);
-	}
-}
-
 static void xwm_selection_set_owner(struct wlr_xwm_selection *selection,
 		bool set) {
 	if (set) {

xwayland/xwm.c

@@ -5,6 +5,8 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <wlr/config.h>
+#include <wlr/types/wlr_data_device.h>
+#include <wlr/types/wlr_primary_selection.h>
 #include <wlr/types/wlr_surface.h>
 #include <wlr/util/edges.h>
 #include <wlr/util/log.h>
@@ -1581,7 +1583,36 @@ void xwm_destroy(struct wlr_xwm *xwm) {
 	if (!xwm) {
 		return;
 	}
-	xwm_selection_finish(xwm);
+
+	xwm_selection_finish(&xwm->clipboard_selection);
+	xwm_selection_finish(&xwm->primary_selection);
+	xwm_selection_finish(&xwm->dnd_selection);
+
+	if (xwm->selection_window) {
+		xcb_destroy_window(xwm->xcb_conn, xwm->selection_window);
+	}
+
+	if (xwm->dnd_window) {
+		xcb_destroy_window(xwm->xcb_conn, xwm->dnd_window);
+	}
+
+	if (xwm->seat) {
+		if (xwm->seat->selection_source &&
+				data_source_is_xwayland(xwm->seat->selection_source)) {
+			wlr_seat_set_selection(xwm->seat, NULL,
+				wl_display_next_serial(xwm->xwayland->wl_display));
+		}
+
+		if (xwm->seat->primary_selection_source &&
+				primary_selection_source_is_xwayland(
+					xwm->seat->primary_selection_source)) {
+			wlr_seat_set_primary_selection(xwm->seat, NULL,
+				wl_display_next_serial(xwm->xwayland->wl_display));
+		}
+
+		wlr_xwayland_set_seat(xwm->xwayland, NULL);
+	}
+
 	if (xwm->cursor) {
 		xcb_free_cursor(xwm->xcb_conn, xwm->cursor);
 	}