diff -ur xfwm4-4.10.1-old/config.log xfwm4-4.10.1/config.log
diff -ur xfwm4-4.10.1-old/src/client.h xfwm4-4.10.1/src/client.h
--- xfwm4-4.10.1-old/src/client.h	2013-05-05 11:58:42.000000000 -0400
+++ xfwm4-4.10.1/src/client.h	2014-08-02 22:04:27.596707929 -0400
@@ -161,6 +161,7 @@
 #define CLIENT_FLAG_DEMANDS_ATTENTION   (1L<<17)
 #define CLIENT_FLAG_HAS_SHAPE           (1L<<18)
 #define CLIENT_FLAG_FULLSCREN_MONITORS  (1L<<19)
+#define CLIENT_FLAG_FOCUSED             (1L<<20)
 
 #define WM_FLAG_DELETE                  (1L<<0)
 #define WM_FLAG_INPUT                   (1L<<1)
diff -ur xfwm4-4.10.1-old/src/display.c xfwm4-4.10.1/src/display.c
--- xfwm4-4.10.1-old/src/display.c	2013-05-05 11:58:42.000000000 -0400
+++ xfwm4-4.10.1/src/display.c	2014-08-02 21:58:00.970039255 -0400
@@ -126,6 +126,7 @@
         "_NET_WM_STATE_ABOVE",
         "_NET_WM_STATE_BELOW",
         "_NET_WM_STATE_DEMANDS_ATTENTION",
+        "_NET_WM_STATE_FOCUSED",
         "_NET_WM_STATE_FULLSCREEN",
         "_NET_WM_STATE_HIDDEN",
         "_NET_WM_STATE_MAXIMIZED_HORZ",
diff -ur xfwm4-4.10.1-old/src/display.h xfwm4-4.10.1/src/display.h
--- xfwm4-4.10.1-old/src/display.h	2013-05-05 11:58:42.000000000 -0400
+++ xfwm4-4.10.1/src/display.h	2014-08-02 21:57:43.626705829 -0400
@@ -221,6 +221,7 @@
     NET_WM_STATE_ABOVE,
     NET_WM_STATE_BELOW,
     NET_WM_STATE_DEMANDS_ATTENTION,
+    NET_WM_STATE_FOCUSED,
     NET_WM_STATE_FULLSCREEN,
     NET_WM_STATE_HIDDEN,
     NET_WM_STATE_MAXIMIZED_HORZ,
diff -ur xfwm4-4.10.1-old/src/focus.c xfwm4-4.10.1/src/focus.c
--- xfwm4-4.10.1-old/src/focus.c	2013-05-05 11:58:42.000000000 -0400
+++ xfwm4-4.10.1/src/focus.c	2014-08-02 22:09:50.010042939 -0400
@@ -462,6 +462,8 @@
 
     if (previous)
     {
+        FLAG_UNSET (previous->flags, CLIENT_FLAG_FOCUSED);
+        clientSetNetState (previous);
         frameQueueDraw (previous, FALSE);
         if (previous->screen_info != screen_info)
         {
@@ -497,6 +499,8 @@
     client_focus = c;
     if (c2)
     {
+        FLAG_UNSET (c2->flags, CLIENT_FLAG_FOCUSED);
+        clientSetNetState (c2);
         clientAdjustFullscreenLayer (c2, FALSE);
         frameQueueDraw (c2, FALSE);
         clientUpdateOpacity (c2);
@@ -513,8 +517,9 @@
         {
             TRACE ("Un-setting WM_STATE_DEMANDS_ATTENTION flag on \"%s\" (0x%lx)", c->name, c->window);
             FLAG_UNSET (c->flags, CLIENT_FLAG_DEMANDS_ATTENTION);
-            clientSetNetState (c);
         }
+        FLAG_SET (c->flags, CLIENT_FLAG_FOCUSED);
+        clientSetNetState (c);
         clientAdjustFullscreenLayer (c, TRUE);
         frameQueueDraw (c, FALSE);
         clientUpdateOpacity (c);
diff -ur xfwm4-4.10.1-old/src/hints.c xfwm4-4.10.1/src/hints.c
--- xfwm4-4.10.1-old/src/hints.c	2013-05-05 11:58:42.000000000 -0400
+++ xfwm4-4.10.1/src/hints.c	2014-08-02 22:07:37.220042248 -0400
@@ -389,6 +389,7 @@
     atoms[i++] = display_info->atoms[NET_WM_STATE_ABOVE];
     atoms[i++] = display_info->atoms[NET_WM_STATE_BELOW];
     atoms[i++] = display_info->atoms[NET_WM_STATE_DEMANDS_ATTENTION];
+    atoms[i++] = display_info->atoms[NET_WM_STATE_FOCUSED];
     atoms[i++] = display_info->atoms[NET_WM_STATE_FULLSCREEN];
     atoms[i++] = display_info->atoms[NET_WM_STATE_HIDDEN];
     atoms[i++] = display_info->atoms[NET_WM_STATE_MAXIMIZED_HORZ];
diff -ur xfwm4-4.10.1-old/src/netwm.c xfwm4-4.10.1/src/netwm.c
--- xfwm4-4.10.1-old/src/netwm.c	2013-05-05 11:58:42.000000000 -0400
+++ xfwm4-4.10.1/src/netwm.c	2014-08-02 22:06:00.030041743 -0400
@@ -130,6 +130,11 @@
         TRACE ("clientSetNetState : demands_attention");
         data[i++] = display_info->atoms[NET_WM_STATE_DEMANDS_ATTENTION];
     }
+    if (FLAG_TEST (c->flags, CLIENT_FLAG_FOCUSED))
+    {
+        TRACE ("clientSetNetState : focused");
+        data[i++] = display_info->atoms[NET_WM_STATE_FOCUSED];
+    }
     XChangeProperty (display_info->dpy, c->window,
                      display_info->atoms[NET_WM_STATE], XA_ATOM, 32,
                      PropModeReplace, (unsigned char *) data, i);