EWMH: Handle _NET_WM_DESKTOP in lua

We now handle all "important" EWMH messages in lua and lua can decide to do
different things than the current obvious one.

Consistency!

Signed-off-by: Uli Schlachter <psychon@znc.in>

ewmh.c

@@ -366,18 +366,19 @@ ewmh_process_desktop(client_t *c, uint32_t desktop)
     if(desktop == 0xffffffff)
     {
         luaA_object_push(globalconf.L, c);
-        client_set_sticky(globalconf.L, -1, true);
+        lua_pushnil(globalconf.L);
+        luaA_object_emit_signal(globalconf.L, -2, "request::tag", 1);
+        /* Pop the client, arguments are already popped */
         lua_pop(globalconf.L, 1);
     }
     else if (idx >= 0 && idx < globalconf.tags.len)
-        for(int i = 0; i < globalconf.tags.len; i++)
-            if(idx == i)
-            {
-                luaA_object_push(globalconf.L, globalconf.tags.tab[i]);
-                tag_client(c);
-            }
-            else
-                untag_client(c, globalconf.tags.tab[i]);
+    {
+        luaA_object_push(globalconf.L, c);
+        luaA_object_push(globalconf.L, globalconf.tags.tab[idx]);
+        luaA_object_emit_signal(globalconf.L, -2, "request::tag", 1);
+        /* Pop the client, arguments are already popped */
+        lua_pop(globalconf.L, 1);
+    }
 }
 
 int

lib/awful/ewmh.lua.in

@@ -142,7 +142,17 @@ function ewmh.activate(c)
     end
 end
 
+-- Tag a window with its requested tag
+function ewmh.tag(c, t)
+    if not t then
+        c.sticky = true
+    else
+        c:tags({ t })
+    end
+end
+
 client.connect_signal("request::activate", ewmh.activate)
+client.connect_signal("request::tag", ewmh.tag)
 client.connect_signal("request::maximized_horizontal", maximized_horizontal)
 client.connect_signal("request::maximized_vertical", maximized_vertical)
 client.connect_signal("request::fullscreen", fullscreen)

objects/client.c

@@ -2421,6 +2421,7 @@ luaA_class_add_property(&client_class, "startup_id",
     signal_add(&client_class.signals, "request::fullscreen");
     signal_add(&client_class.signals, "request::maximized_horizontal");
     signal_add(&client_class.signals, "request::maximized_vertical");
+    signal_add(&client_class.signals, "request::tag");
     signal_add(&client_class.signals, "tagged");
     signal_add(&client_class.signals, "unfocus");
     signal_add(&client_class.signals, "unmanage");