From 8a618e4b006000cbd521031f4c191e862da03914 Mon Sep 17 00:00:00 2001
From: Tony Crisci <tony@dubstepdish.com>
Date: Tue, 17 Jun 2014 02:49:39 -0400
Subject: [PATCH] bugfix: don't set input focus if not accepted

http://tronche.com/gui/x/icccm/sec-4.html#s-4.1.7

> Clients using the Globally Active model can only use a SetInputFocus request
> to acquire the input focus when they do not already have it on receipt of one
> of the following events:
> * ButtonPress
> * ButtonRelease
> * Passive-grabbed KeyPress
> * Passive-grabbed KeyRelease

Since managing a window happens on a MapNotify (which is absent from this
list), the window cannot accept input focus, so we should not try to focus
the window at all.

Fixes an issue with xfce4-notifyd which (correctly) declines focus when
we send WM_TAKE_FOCUS, which puts i3 in a state where i3 focus and X
focus are different when a notification appears.
---
 src/ewmh.c                      |  6 +++---
 src/manage.c                    |  2 +-
 testcases/t/158-wm_take_focus.t | 14 +++++++++++++-
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/ewmh.c b/src/ewmh.c
index 7ab0c22a..3ef79937 100644
--- a/src/ewmh.c
+++ b/src/ewmh.c
@@ -48,9 +48,9 @@ void ewmh_update_number_of_desktops(void) {
     Con *output;
     uint32_t idx = 0;
 
-    TAILQ_FOREACH (output, &(croot->nodes_head), nodes) {
+    TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
         Con *ws;
-        TAILQ_FOREACH (ws, &(output_get_content(output)->nodes_head), nodes) {
+        TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
             if (STARTS_WITH(ws->name, "__"))
                 continue;
             ++idx;
@@ -58,7 +58,7 @@ void ewmh_update_number_of_desktops(void) {
     }
 
     xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
-            A__NET_NUMBER_OF_DESKTOPS, XCB_ATOM_CARDINAL, 32, 1, &idx);
+                        A__NET_NUMBER_OF_DESKTOPS, XCB_ATOM_CARDINAL, 32, 1, &idx);
 }
 
 /*
diff --git a/src/manage.c b/src/manage.c
index 227e9d24..202b0649 100644
--- a/src/manage.c
+++ b/src/manage.c
@@ -505,7 +505,7 @@ void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cooki
 
     /* Defer setting focus after the 'new' event has been sent to ensure the
      * proper window event sequence. */
-    if (set_focus) {
+    if (set_focus && !nc->window->doesnt_accept_focus) {
         DLOG("Now setting focus.\n");
         con_focus(nc);
     }
diff --git a/testcases/t/158-wm_take_focus.t b/testcases/t/158-wm_take_focus.t
index ba03913a..050e1162 100644
--- a/testcases/t/158-wm_take_focus.t
+++ b/testcases/t/158-wm_take_focus.t
@@ -59,6 +59,18 @@ subtest 'Window without WM_TAKE_FOCUS', sub {
     done_testing;
 };
 
+# http://tronche.com/gui/x/icccm/sec-4.html#s-4.1.7
+# > Clients using the Globally Active model can only use a SetInputFocus request
+# > to acquire the input focus when they do not already have it on receipt of one
+# > of the following events:
+# > * ButtonPress
+# > * ButtonRelease
+# > * Passive-grabbed KeyPress
+# > * Passive-grabbed KeyRelease
+#
+# Since managing a window happens on a MapNotify (which is absent from this
+# list), the window cannot accept input focus, so we should not try to focus
+# the window at all.
 subtest 'Window with WM_TAKE_FOCUS and without InputHint', sub {
     fresh_workspace;
 
@@ -74,7 +86,7 @@ subtest 'Window with WM_TAKE_FOCUS and without InputHint', sub {
 
     $window->map;
 
-    ok(recv_take_focus($window), 'got ClientMessage with WM_TAKE_FOCUS atom');
+    ok(!recv_take_focus($window), 'did not receive ClientMessage');
 
     done_testing;
 };
-- 
2.39.5