awful: filter focus by type

Signed-off-by: Julien Danjou <julien@danjou.info>

awesomerc.lua.in

@@ -359,7 +359,8 @@ end)
 -- Hook function to execute when the mouse is over a client.
 awful.hooks.mouse_over.register(function (c)
     -- Sloppy focus, but disabled for magnifier layout
-    if awful.layout.get(c.screen) ~= "magnifier" then
+    if awful.layout.get(c.screen) ~= "magnifier"
+        and awful.client.focus.filter(c) then
         client.focus = c
     end
 end)
@@ -422,7 +423,8 @@ awful.hooks.arrange.register(function (screen)
             mylayoutbox[screen].text = "No layout."
     end
 
-    -- If no window has focus, give focus to the latest in history
+    -- Give focus to the latest client in history if no window has focus
+    -- or if the current window is a desktop or a dock one.
     if not client.focus then
         local c = awful.client.focus.history.get(screen, 0)
         if c then client.focus = c end

lib/awful.lua.in

@@ -161,13 +161,29 @@ function client.focus.history.delete(c)
     end
 end
 
+--- Filter out window that we do not want handled by focus.
+-- This usually means that desktop, dock and splash windows are
+-- not registered and cannot get focus.
+-- @param c A client.
+-- @return The same client if it's ok, nil otherwise.
+function client.focus.filter(c)
+    if c.type == "desktop"
+        or c.type == "dock"
+        or c.type == "splash" then
+        return nil
+    end
+    return c
+end
+
 --- Update client focus history.
 -- @param c The client that has been focused.
 function client.focus.history.add(c)
+    if client.focus.filter(c) then
         -- Remove the client if its in stack
         client.focus.history.delete(c)
         -- Record the client has latest focused
         table.insert(client.focus.history.data, 1, c)
+    end
 end
 
 --- Get the latest focused client for a screen in history.
@@ -223,11 +239,17 @@ function client.next(i, c)
     if sel then
         -- Get all visible clients
         local cls = capi.client.visible_get(sel.screen)
+        -- Remove all no-normal clients
+        for idx, c in ipairs(cls) do
+            if not client.focus.filter(c) then
+                table.remove(cls, idx)
+            end
+        end
         -- Loop upon each client
         for idx, c in ipairs(cls) do
             if c == sel then
                 -- Cycle
-                return cls[cycle(#cls, idx +i)]
+                return cls[cycle(#cls, idx + i)]
             end
         end
     end