config reload: destroy old seat when removed from config

This adds new sway_seat_destroy and sway_cursor_destroy helpers
and compare new and old config on free

1 files changed, 19 insertions, 0 deletions

diff --git a/sway/config.c b/sway/config.c
index cb22f664..0f91cce6 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -21,6 +21,7 @@
 #endif
 #include <wlr/types/wlr_output.h>
 #include "sway/input/input-manager.h"
+#include "sway/input/seat.h"
 #include "sway/commands.h"
 #include "sway/config.h"
 #include "sway/layout.h"
@@ -109,6 +110,23 @@ void free_config(struct sway_config *config) {
         free(config);
 }
 
+static void destroy_removed_seats(struct sway_config *old_config,
+                struct sway_config *new_config) {
+        struct seat_config *seat_config;
+        struct sway_seat *seat;
+        int i;
+        for (i = 0; i < old_config->seat_configs->length; i++) {
+                seat_config = old_config->seat_configs->items[i];
+                /* Also destroy seats that aren't present in new config */
+                if (new_config && list_seq_find(new_config->seat_configs,
+                                seat_name_cmp, seat_config->name) < 0) {
+                        seat = input_manager_get_seat(input_manager,
+                                seat_config->name);
+                        sway_seat_destroy(seat);
+                }
+        }
+}
+
 static void config_defaults(struct sway_config *config) {
         if (!(config->symbols = create_list())) goto cleanup;
         if (!(config->modes = create_list())) goto cleanup;
@@ -382,6 +400,7 @@ bool load_main_config(const char *file, bool is_active) {
         }
 
         if (old_config) {
+                destroy_removed_seats(old_config, config);
                 free_config(old_config);
         }
         config->reading = false;