Implement transient seat management

include/sway/input/input-manager.h

@@ -4,6 +4,7 @@
 #include <wlr/types/wlr_keyboard_shortcuts_inhibit_v1.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
 #include <wlr/types/wlr_virtual_pointer_v1.h>
+#include <wlr/types/wlr_transient_seat_v1.h>
 #include "sway/server.h"
 #include "sway/config.h"
 #include "list.h"
@@ -24,6 +25,7 @@ struct sway_input_manager {
 	struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard;
 	struct wlr_virtual_pointer_manager_v1 *virtual_pointer;
 	struct wlr_pointer_gestures_v1 *pointer_gestures;
+	struct wlr_transient_seat_manager_v1 *transient_seat_manager;
 
 	struct wl_listener new_input;
 	struct wl_listener inhibit_activate;
@@ -31,6 +33,7 @@ struct sway_input_manager {
 	struct wl_listener keyboard_shortcuts_inhibit_new_inhibitor;
 	struct wl_listener virtual_keyboard_new;
 	struct wl_listener virtual_pointer_new;
+	struct wl_listener transient_seat_create;
 };
 
 struct sway_input_manager *input_manager_create(struct sway_server *server);

include/sway/input/seat.h

@@ -124,6 +124,7 @@ struct sway_seat {
 	struct wl_listener start_drag;
 	struct wl_listener request_set_selection;
 	struct wl_listener request_set_primary_selection;
+	struct wl_listener destroy;
 
 	struct wl_list devices; // sway_seat_device::link
 	struct wl_list keyboard_groups; // sway_keyboard_group::link

sway/input/input-manager.c

@@ -2,7 +2,9 @@
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
+#include <assert.h>
 #include <wlr/config.h>
+#include <wlr/backend/libinput.h>
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/types/wlr_keyboard_group.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
@@ -431,6 +433,20 @@ void handle_virtual_pointer(struct wl_listener *listener, void *data) {
 	}
 }
 
+static void handle_transient_seat_manager_create_seat(
+		struct wl_listener *listener, void *data) {
+	struct wlr_transient_seat_v1 *transient_seat = data;
+	static uint64_t i;
+	char name[256];
+	snprintf(name, sizeof(name), "transient-%"PRIx64, i++);
+	struct sway_seat *seat = seat_create(name);
+	if (seat && seat->wlr_seat) {
+		wlr_transient_seat_v1_ready(transient_seat, seat->wlr_seat);
+	} else {
+		wlr_transient_seat_v1_deny(transient_seat);
+	}
+}
+
 struct sway_input_manager *input_manager_create(struct sway_server *server) {
 	struct sway_input_manager *input =
 		calloc(1, sizeof(struct sway_input_manager));
@@ -466,6 +482,15 @@ struct sway_input_manager *input_manager_create(struct sway_server *server) {
 
 	input->pointer_gestures = wlr_pointer_gestures_v1_create(server->wl_display);
 
+	input->transient_seat_manager =
+		wlr_transient_seat_manager_v1_create(server->wl_display);
+	assert(input->transient_seat_manager);
+
+	input->transient_seat_create.notify =
+		handle_transient_seat_manager_create_seat;
+	wl_signal_add(&input->transient_seat_manager->events.create_seat,
+			&input->transient_seat_create);
+
 	return input;
 }
 

sway/input/seat.c

@@ -67,6 +67,12 @@ static void seat_node_destroy(struct sway_seat_node *seat_node) {
 }
 
 void seat_destroy(struct sway_seat *seat) {
+	wlr_seat_destroy(seat->wlr_seat);
+}
+
+static void handle_seat_destroy(struct wl_listener *listener, void *data) {
+	struct sway_seat *seat = wl_container_of(listener, seat, destroy);
+
 	if (seat == config->handler_context.seat) {
 		config->handler_context.seat = input_manager_get_default_seat();
 	}
@@ -87,7 +93,7 @@ void seat_destroy(struct sway_seat *seat) {
 	wl_list_remove(&seat->request_set_selection.link);
 	wl_list_remove(&seat->request_set_primary_selection.link);
 	wl_list_remove(&seat->link);
-	wlr_seat_destroy(seat->wlr_seat);
+	wl_list_remove(&seat->destroy.link);
 	for (int i = 0; i < seat->deferred_bindings->length; i++) {
 		free_sway_binding(seat->deferred_bindings->items[i]);
 	}
@@ -534,6 +540,9 @@ struct sway_seat *seat_create(const char *seat_name) {
 		return NULL;
 	}
 
+	seat->destroy.notify = handle_seat_destroy;
+	wl_signal_add(&seat->wlr_seat->events.destroy, &seat->destroy);
+
 	seat->idle_inhibit_sources = seat->idle_wake_sources =
 		IDLE_SOURCE_KEYBOARD |
 		IDLE_SOURCE_POINTER |

sway/server.c

@@ -112,7 +112,8 @@ static bool is_privileged(const struct wl_global *global) {
 		global == server.session_lock.manager->global ||
 		global == server.input->keyboard_shortcuts_inhibit->global ||
 		global == server.input->virtual_keyboard->global ||
-		global == server.input->virtual_pointer->global;
+		global == server.input->virtual_pointer->global ||
+		global == server.input->transient_seat_manager->global;
 }
 
 static bool filter_global(const struct wl_client *client,