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exec: use X11 window id for I3_WINDOW_ID

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This commit is contained in:
Rene D. Obermueller 2026-02-12 19:23:07 +01:00
parent fb0fc6a542
commit 488aa551f9
2 changed files with 40 additions and 26 deletions
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54
sway/commands/exec_always.c
View file

@ -10,10 +10,29 @@
#include "sway/desktop/launcher.h"
#include "sway/tree/container.h"
#include "sway/tree/root.h"
#include "sway/tree/view.h"
#include "sway/tree/workspace.h"
#include "log.h"
#include "stringop.h"
static void export_id(const char *env_var_name, size_t id) {
int id_len = snprintf(NULL, 0, "%zu", id);
if (id_len < 0) {
sway_log(SWAY_ERROR, "Unable to determine buffer length for %s", env_var_name);
return;
}
// accommodate \0
id_len++;
char* id_str = malloc(id_len);
if (!id_str) {
sway_log(SWAY_ERROR, "Unable to allocate buffer for %s", env_var_name);
return;
}
snprintf(id_str, id_len, "%zu", id);
setenv(env_var_name, id_str, 1);
free(id_str);
}
struct cmd_results *cmd_exec_validate(int argc, char **argv) {
struct cmd_results *error = NULL;
if ((error = checkarg(argc, argv[-1], EXPECTED_AT_LEAST, 1))) {
@ -28,12 +47,12 @@ struct cmd_results *cmd_exec_validate(int argc, char **argv) {
struct cmd_results *cmd_exec_process(int argc, char **argv) {
struct cmd_results *error = NULL;
char *cmd = NULL;
bool no_matched_container_id = false;
bool matched_ids = false;
bool no_startup_id = false;
int argv_counter = -1;
while (argc > 0 && has_prefix(*argv, "--")) {
if (strcmp(argv[0], "--no-matched-container-id") == 0) {
no_matched_container_id = true;
if (strcmp(argv[0], "--matched-ids") == 0) {
matched_ids = true;
} else if (strcmp(argv[0], "--no-startup-id") == 0) {
no_startup_id = true;
} else {
@ -70,26 +89,20 @@ struct cmd_results *cmd_exec_process(int argc, char **argv) {
}
}
if (no_matched_container_id || config->handler_context.node == NULL) {
if (!matched_ids || config->handler_context.node == NULL) {
goto no_con_id_export;
}
size_t con_id = config->handler_context.node->id;
int con_id_len = snprintf(NULL, 0, "%zu", con_id);
if (con_id_len < 0) {
sway_log(SWAY_ERROR, "Unable to determine buffer length for SWAY_EXEC_CON_ID");
goto no_con_id_export;
struct sway_node *node = config->handler_context.node;
export_id("SWAY_EXEC_CON_ID", node->id);
#if WLR_HAS_XWAYLAND
if (node->type == N_CONTAINER &&
node->sway_container->view != NULL &&
node->sway_container->view->type == SWAY_VIEW_XWAYLAND) {
export_id("I3_WINDOW_ID", view_get_x11_window_id(node->sway_container->view));
}
// accommodate \0
con_id_len++;
char* con_id_str = malloc(con_id_len);
if (!con_id_str) {
sway_log(SWAY_ERROR, "Unable to allocate buffer for SWAY_EXEC_CON_ID");
goto no_con_id_export;
}
snprintf(con_id_str, con_id_len, "%zu", con_id);
setenv("SWAY_EXEC_CON_ID", con_id_str, 1);
setenv("I3_WINDOW_ID", con_id_str, 1);
free(con_id_str);
#endif
no_con_id_export:
execlp("sh", "sh", "-c", cmd, (void*)NULL);
@ -118,3 +131,4 @@ struct cmd_results *cmd_exec_always(int argc, char **argv) {
}
return cmd_exec_process(argc, argv);
}

12
sway/sway.5.scd
View file

@ -704,12 +704,12 @@ The default colors are:
windows that are spawned in floating mode, not windows that become floating
afterwards.
*exec* [--matched-container-id] [--no-startup-id] <shell command>
Executes _shell command_ with sh. It exports the matched container id to env
variables I3_WINDOW_ID and SWAY_EXEC_CON_ID in case of a criteria match or
the focused node otherwise, unless the _--no-matched-container-id_ option
is set. The _--no_startup_id_ option prevents exporting of
DESKTOP_STARTUP_ID.
*exec* [--matched-ids] [--no-startup-id] <shell command>
Executes _shell command_ with sh. With _--matched-ids_, It exports the
matched container id to env variable SWAY_EXEC_CON_ID and, if available,
X11 window id to env variable I3_WINDOW_ID in case of a criteria match or
the focused node otherwise. The _--no_startup_id_ option prevents exporting
of DESKTOP_STARTUP_ID.
*exec_always* [--matched-container-id] [--no-startup-id] <shell command>
Like *exec*, but the shell command will be executed _again_ after *reload*.