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dialog: Detect if the file chooser portal is available

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Use the introspection method to detect if the file chooser portal is available.
This commit is contained in:
Frank Praznik 2024-03-15 13:29:02 -04:00
parent 19764ffcc8
commit d523cd069f
1 changed files with 52 additions and 2 deletions
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54
src/dialog/unix/SDL_portaldialog.c
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@ -374,8 +374,58 @@ void SDL_Portal_ShowOpenFolderDialog(SDL_DialogFileCallback callback, void* user
int SDL_Portal_detect(void)
{
/* TODO */
return 0;
SDL_DBusContext *dbus = SDL_DBus_GetContext();
DBusMessage *msg = NULL, *reply = NULL;
char *reply_str = NULL;
DBusMessageIter reply_iter;
static int portal_present = -1;
/* No need for this if the result is cached. */
if (portal_present != -1) {
return portal_present;
}
portal_present = 0;
if (!dbus) {
SDL_SetError("%s", "Failed to connect to DBus!");
return 0;
}
/* Use introspection to get the available services. */
msg = dbus->message_new_method_call(PORTAL_DESTINATION, PORTAL_PATH, "org.freedesktop.DBus.Introspectable", "Introspect");
if (!msg) {
goto done;
}
reply = dbus->connection_send_with_reply_and_block(dbus->session_conn, msg, DBUS_TIMEOUT_INFINITE, NULL);
dbus->message_unref(msg);
if (!reply) {
goto done;
}
if (!dbus->message_iter_init(reply, &reply_iter)) {
goto done;
}
if (dbus->message_iter_get_arg_type(&reply_iter) != DBUS_TYPE_STRING) {
goto done;
}
/* Introspection gives us a dump of all the services on the destination in XML format, so search the
* giant string for the file chooser protocol.
*/
dbus->message_iter_get_basic(&reply_iter, &reply_str);
if (SDL_strstr(reply_str, PORTAL_INTERFACE)) {
portal_present = 1; /* Found it! */
}
done:
if (reply) {
dbus->message_unref(reply);
}
return portal_present;
}
#else