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shell/app-system: Retrack windows if necessary

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We currently don't update running apps when the set of installed
apps changes. However we should, as the change could mean that

 - the app got uninstalled, and the running app should become
   window-backed

 - a newly installed app got launched before the app cache was
   updated, and we replace the window-backed fallback with the
   proper app

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/5664

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2480>
This commit is contained in:
Florian Müllner 2022-09-09 18:25:22 +02:00 committed by Marge Bot
parent 9c262ad7bf
commit d7dc50da71
1 changed files with 43 additions and 0 deletions
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43
src/shell-app-system.c
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@ -169,6 +169,43 @@ stale_app_remove_func (gpointer key,
return app_is_stale (value);
}
static void
collect_stale_windows (gpointer key,
gpointer value,
gpointer user_data)
{
ShellApp *app = key;
GDesktopAppInfo *info;
GPtrArray *windows = user_data;
info = shell_app_cache_get_info (shell_app_cache_get_default (),
shell_app_get_id (app));
/* No info either means that the app became stale, or that it is
* window-backed. Re-tracking the app's windows allows us to reflect
* changes in either direction, i.e. from stale app to window-backed,
* or from window-backed to app-backed (if the app was launched right
* between installing the app and updating the app cache).
*/
if (info == NULL)
{
GSList *l;
for (l = shell_app_get_windows (app); l; l = l->next)
g_ptr_array_add (windows, l->data);
}
}
static void
retrack_window (gpointer data,
gpointer user_data)
{
GObject *window = data;
/* Make ShellWindowTracker retrack the window */
g_object_notify (window, "wm-class");
}
static gboolean
rescan_icon_theme_cb (gpointer user_data)
{
@ -214,10 +251,16 @@ static void
installed_changed (ShellAppCache *cache,
ShellAppSystem *self)
{
GPtrArray *windows = g_ptr_array_new ();
rescan_icon_theme (self);
scan_startup_wm_class_to_id (self);
g_hash_table_foreach_remove (self->priv->id_to_app, stale_app_remove_func, NULL);
g_hash_table_foreach (self->priv->running_apps, collect_stale_windows, windows);
g_ptr_array_foreach (windows, retrack_window, NULL);
g_ptr_array_free (windows, TRUE);
g_signal_emit (self, signals[INSTALLED_CHANGED], 0, NULL);
}