From 0568c7d0ad05b7fc06775834e2a96089103b5d5e Mon Sep 17 00:00:00 2001
From: delthas <delthas@dille.cc>
Date: Wed, 6 Sep 2023 18:33:29 +0200
Subject: [PATCH] introduce rate-limiting timer for setting the app ID

---
 osc.c      |  2 +-
 terminal.c | 29 +++++++++++++++++++++++++++++
 terminal.h |  3 +++
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/osc.c b/osc.c
index 7b0e38a7..8d554baa 100644
--- a/osc.c
+++ b/osc.c
@@ -911,7 +911,7 @@ osc_dispatch(struct terminal *term)
         break;
 
     case 176:
-        xdg_toplevel_set_app_id(term->window->xdg_toplevel, *string ? string : term->conf->app_id);
+        term_set_app_id(term, string);
         break;
 
     case 555:
diff --git a/terminal.c b/terminal.c
index f19da873..8259850e 100644
--- a/terminal.c
+++ b/terminal.c
@@ -1662,6 +1662,7 @@ term_destroy(struct terminal *term)
 
     composed_free(term->composed);
 
+    free(term->app_id);
     free(term->window_title);
     tll_free_and_free(term->window_title_stack, free);
 
@@ -3246,6 +3247,34 @@ term_set_window_title(struct terminal *term, const char *title)
     term->window_title_has_been_set = true;
 }
 
+void
+term_set_app_id(struct terminal *term, const char *app_id)
+{
+    if (app_id != NULL && *app_id == '\0')
+        app_id = NULL;
+    if (term->app_id == NULL && app_id == NULL)
+        return;
+    if (term->app_id != NULL && app_id != NULL && strcmp(term->app_id, app_id) == 0)
+        return;
+
+    struct timespec now;
+    if (clock_gettime(CLOCK_MONOTONIC, &now) < 0)
+        return;
+    struct timespec diff;
+    timespec_sub(&now, &term->app_id_last_update, &diff);
+    if (diff.tv_sec == 0 && diff.tv_nsec < 8333 * 1000)
+        return;
+    term->app_id_last_update = now;
+
+    free(term->app_id);
+    if (app_id != NULL) {
+        term->app_id = xstrdup(app_id);
+    } else {
+        term->app_id = NULL;
+    }
+    xdg_toplevel_set_app_id(term->window->xdg_toplevel, term->app_id ? term->app_id : term->conf->app_id);
+}
+
 void
 term_flash(struct terminal *term, unsigned duration_ms)
 {
diff --git a/terminal.h b/terminal.h
index 0bba6945..a34968f2 100644
--- a/terminal.h
+++ b/terminal.h
@@ -477,6 +477,8 @@ struct terminal {
     bool window_title_has_been_set;
     char *window_title;
     tll(char *) window_title_stack;
+    char *app_id;
+    struct timespec app_id_last_update;
 
     struct {
         bool active;
@@ -824,6 +826,7 @@ void term_xcursor_update_for_seat(struct terminal *term, struct seat *seat);
 void term_set_user_mouse_cursor(struct terminal *term, const char *cursor);
 
 void term_set_window_title(struct terminal *term, const char *title);
+void term_set_app_id(struct terminal *term, const char *app_id);
 void term_flash(struct terminal *term, unsigned duration_ms);
 void term_bell(struct terminal *term);
 bool term_spawn_new(const struct terminal *term);