Properly clear the urgency hint when set by i3.

fixes #1825

src/con.c

@@ -211,7 +211,7 @@ void con_focus(Con *con) {
      * checks before resetting the urgency.
      */
     if (con->urgent && con_is_leaf(con)) {
-        con->urgent = false;
+        con_set_urgency(con, false);
         con_update_parents_urgency(con);
         workspace_update_urgent_flag(con_get_workspace(con));
         ipc_send_window_event("urgent", con);
@@ -1722,13 +1722,13 @@ void con_update_parents_urgency(Con *con) {
  *
  */
 void con_set_urgency(Con *con, bool urgent) {
-    if (focused == con) {
+    if (urgent && focused == con) {
         DLOG("Ignoring urgency flag for current client\n");
-        con->window->urgent.tv_sec = 0;
-        con->window->urgent.tv_usec = 0;
         return;
     }
 
+    const bool old_urgent = con->urgent;
+
     if (con->urgency_timer == NULL) {
         con->urgent = urgent;
     } else
@@ -1752,7 +1752,7 @@ void con_set_urgency(Con *con, bool urgent) {
     if ((ws = con_get_workspace(con)) != NULL)
         workspace_update_urgent_flag(ws);
 
-    if (con->urgent == urgent) {
+    if (con->urgent != old_urgent) {
         LOG("Urgency flag changed to %d\n", con->urgent);
         ipc_send_window_event("urgent", con);
     }

src/tree.c

@@ -202,7 +202,7 @@ bool tree_close(Con *con, kill_window_t kill_window, bool dont_kill_parent, bool
 
     /* remove the urgency hint of the workspace (if set) */
     if (con->urgent) {
-        con->urgent = false;
+        con_set_urgency(con, false);
         con_update_parents_urgency(con);
         workspace_update_urgent_flag(con_get_workspace(con));
     }

src/workspace.c

@@ -322,17 +322,17 @@ static void workspace_reassign_sticky(Con *con) {
 static void workspace_defer_update_urgent_hint_cb(EV_P_ ev_timer *w, int revents) {
     Con *con = w->data;
 
+    ev_timer_stop(main_loop, con->urgency_timer);
+    FREE(con->urgency_timer);
+
     if (con->urgent) {
         DLOG("Resetting urgency flag of con %p by timer\n", con);
-        con->urgent = false;
+        con_set_urgency(con, false);
         con_update_parents_urgency(con);
         workspace_update_urgent_flag(con_get_workspace(con));
         ipc_send_window_event("urgent", con);
         tree_render();
     }
-
-    ev_timer_stop(main_loop, con->urgency_timer);
-    FREE(con->urgency_timer);
 }
 
 static void _workspace_show(Con *workspace) {

testcases/t/248-regress-urgency-clear.t

@@ -0,0 +1,69 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Please read the following documents before working on tests:
+# • http://build.i3wm.org/docs/testsuite.html
+#   (or docs/testsuite)
+#
+# • http://build.i3wm.org/docs/lib-i3test.html
+#   (alternatively: perldoc ./testcases/lib/i3test.pm)
+#
+# • http://build.i3wm.org/docs/ipc.html
+#   (or docs/ipc)
+#
+# • http://onyxneon.com/books/modern_perl/modern_perl_a4.pdf
+#   (unless you are already familiar with Perl)
+#
+# Ensures the urgency hint is cleared properly in the case where i3 set it (due
+# to focus_on_window_activation=urgent), hence the application not clearing it.
+# Ticket: #1825
+# Bug still in: 4.10.3-253-g03799dd
+use i3test i3_autostart => 0;
+
+sub send_net_active_window {
+    my ($id) = @_;
+
+    my $msg = pack "CCSLLLLLLL",
+        X11::XCB::CLIENT_MESSAGE, # response_type
+        32, # format
+        0, # sequence
+        $id, # destination window
+        $x->atom(name => '_NET_ACTIVE_WINDOW')->id,
+        0, # source
+        0, 0, 0, 0;
+
+    $x->send_event(0, $x->get_root_window(), X11::XCB::EVENT_MASK_SUBSTRUCTURE_REDIRECT, $msg);
+}
+
+my $config = <<'EOT';
+# i3 config file (v4)
+font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
+
+focus_on_window_activation urgent
+EOT
+
+my $pid = launch_with_config($config);
+my $i3 = i3(get_socket_path(0));
+my $ws = fresh_workspace;
+my $first = open_window;
+my $second = open_window;
+
+send_net_active_window($first->id);
+sync_with_i3;
+is($x->input_focus, $second->id, 'second window still focused');
+
+cmd '[urgent=latest] focus';
+sync_with_i3;
+is($x->input_focus, $first->id, 'first window focused');
+
+cmd 'focus right';
+sync_with_i3;
+is($x->input_focus, $second->id, 'second window focused again');
+
+cmd '[urgent=latest] focus';
+sync_with_i3;
+is($x->input_focus, $second->id, 'second window still focused');
+
+exit_gracefully($pid);
+
+done_testing;