launcher: track the seat in the launcher ctx

This is a more suitable place to track the requesting seat, since we are
able to respond appropriately to destroy notifications.

(cherry picked from commit f6d22f8e6886edfeca3ecbb695b02079e81ce360)

3 files changed, 31 insertions, 6 deletions

diff --git a/include/sway/desktop/launcher.h b/include/sway/desktop/launcher.h
index b7716e82..ad465a9e 100644
--- a/include/sway/desktop/launcher.h
+++ b/include/sway/desktop/launcher.h
@@ -3,12 +3,15 @@
 
 #include <stdlib.h>
 #include <wayland-server-core.h>
+#include "sway/input/seat.h"
 
 struct launcher_ctx {
         pid_t pid;
         char *fallback_name;
         struct wlr_xdg_activation_token_v1 *token;
         struct wl_listener token_destroy;
+        struct sway_seat *seat;
+        struct wl_listener seat_destroy;
 
         bool activated;
 
diff --git a/sway/desktop/launcher.c b/sway/desktop/launcher.c
index 00a7e38a..4a4255d7 100644
--- a/sway/desktop/launcher.c
+++ b/sway/desktop/launcher.c
@@ -67,6 +67,9 @@ void launcher_ctx_destroy(struct launcher_ctx *ctx) {
         }
         wl_list_remove(&ctx->node_destroy.link);
         wl_list_remove(&ctx->token_destroy.link);
+        if (ctx->seat) {
+                wl_list_remove(&ctx->seat_destroy.link);
+        }
         wl_list_remove(&ctx->link);
         wlr_xdg_activation_token_v1_destroy(ctx->token);
         free(ctx->fallback_name);
@@ -227,6 +230,12 @@ struct launcher_ctx *launcher_ctx_create(struct wlr_xdg_activation_token_v1 *tok
         return ctx;
 }
 
+static void launch_ctx_handle_seat_destroy(struct wl_listener *listener, void *data) {
+        struct launcher_ctx *ctx = wl_container_of(listener, ctx, seat_destroy);
+        ctx->seat = NULL;
+        wl_list_remove(&ctx->seat_destroy.link);
+}
+
 // Creates a context with a new token for the internal launcher
 struct launcher_ctx *launcher_ctx_create_internal(void) {
         struct sway_seat *seat = input_manager_current_seat();
@@ -238,13 +247,15 @@ struct launcher_ctx *launcher_ctx_create_internal(void) {
 
         struct wlr_xdg_activation_token_v1 *token =
                 wlr_xdg_activation_token_v1_create(server.xdg_activation_v1);
-        token->seat = seat->wlr_seat;
 
         struct launcher_ctx *ctx = launcher_ctx_create(token, &ws->node);
         if (!ctx) {
                 wlr_xdg_activation_token_v1_destroy(token);
                 return NULL;
         }
+        ctx->seat = seat;
+        ctx->seat_destroy.notify = launch_ctx_handle_seat_destroy;
+        wl_signal_add(&seat->wlr_seat->events.destroy, &ctx->seat_destroy);
 
         return ctx;
 }
diff --git a/sway/xdg_activation_v1.c b/sway/xdg_activation_v1.c
index c26ee19a..399d81cd 100644
--- a/sway/xdg_activation_v1.c
+++ b/sway/xdg_activation_v1.c
@@ -17,11 +17,15 @@ void xdg_activation_v1_handle_request_activate(struct wl_listener *listener,
                 return;
         }
 
+        struct launcher_ctx *ctx = event->token->data;
+        if (ctx == NULL) {
+                return;
+        }
+
         if (!xdg_surface->surface->mapped) {
                 // This is a startup notification. If we are tracking it, the data
                 // field is a launcher_ctx.
-                struct launcher_ctx *ctx = event->token->data;
-                if (!ctx || ctx->activated) {
+                if (ctx->activated) {
                         // This ctx has already been activated and cannot be used again
                         // for a startup notification. It will be destroyed
                         return;
@@ -32,9 +36,16 @@ void xdg_activation_v1_handle_request_activate(struct wl_listener *listener,
                 return;
         }
 
-        struct wlr_seat *wlr_seat = event->token->seat;
-        struct sway_seat *seat = wlr_seat ? wlr_seat->data : NULL;
-        view_request_activate(view, seat);
+        // This is an activation request. If this context is internal we have ctx->seat.
+        struct sway_seat *seat = ctx->seat;
+        if (!seat) {
+                // Otherwise, use the seat indicated by the launcher client in set_serial
+                seat = ctx->token->seat ? ctx->token->seat->data : NULL;
+        }
+
+        if (seat) {
+                view_request_activate(view, seat);
+        }
 }
 
 void xdg_activation_v1_handle_new_token(struct wl_listener *listener, void *data) {