Add configuration option clickToFocus (issue 225)

To summarize this allows clicks which change the focus to also be passed on to
that window.

XMonad/Config.hs

@@ -27,11 +27,11 @@ module XMonad.Config (defaultConfig) where
 import XMonad.Core as XMonad hiding
     (workspaces,manageHook,keys,logHook,startupHook,borderWidth,mouseBindings
     ,layoutHook,modMask,terminal,normalBorderColor,focusedBorderColor,focusFollowsMouse
-    ,handleEventHook)
+    ,handleEventHook,clickJustFocuses)
 import qualified XMonad.Core as XMonad
     (workspaces,manageHook,keys,logHook,startupHook,borderWidth,mouseBindings
     ,layoutHook,modMask,terminal,normalBorderColor,focusedBorderColor,focusFollowsMouse
-    ,handleEventHook)
+    ,handleEventHook,clickJustFocuses)
 
 import XMonad.Layout
 import XMonad.Operations
@@ -157,6 +157,11 @@ terminal = "xterm"
 focusFollowsMouse :: Bool
 focusFollowsMouse = True
 
+-- | Whether a mouse click select the focus or is just passed to the window
+clickJustFocuses :: Bool
+clickJustFocuses = True
+
+
 -- | The xmonad key bindings. Add, modify or remove key bindings here.
 --
 -- (The comment formatting character is used when generating the manpage)
@@ -248,6 +253,7 @@ defaultConfig = XConfig
     , XMonad.manageHook         = manageHook
     , XMonad.handleEventHook    = handleEventHook
     , XMonad.focusFollowsMouse  = focusFollowsMouse
+    , XMonad.clickJustFocuses       = clickJustFocuses
     }
 
 -- | Finally, a copy of the default bindings in simple textual tabular format.

XMonad/Core.hs

@@ -110,6 +110,7 @@ data XConfig l = XConfig
     , logHook            :: !(X ())              -- ^ The action to perform when the windows set is changed
     , startupHook        :: !(X ())              -- ^ The action to perform on startup
     , focusFollowsMouse  :: !Bool                -- ^ Whether window entry events can change focus
+    , clickJustFocuses   :: !Bool                -- ^ False to make a click which changes focus to be additionally passed to the window
     }
 
 

XMonad/Main.hsc

@@ -253,8 +253,11 @@ handle e@(ButtonEvent {ev_window = w,ev_event_type = t,ev_button = b })
     m <- cleanMask $ ev_state e
     mact <- asks (M.lookup (m, b) . buttonActions)
     case mact of
-        (Just act) | isr -> act $ ev_subwindow e
-        _                -> focus w >> io (allowEvents dpy replayPointer currentTime)
+        Just act | isr -> act $ ev_subwindow e
+        _              -> do
+            focus w
+            ctf <- asks (clickJustFocuses . config)
+            unless ctf $ io (allowEvents dpy replayPointer currentTime)
     broadcastMessage e -- Always send button events.
 
 -- entered a normal window: focus it if focusFollowsMouse is set to

XMonad/Operations.hs

@@ -283,11 +283,14 @@ rescreen = do
 
 -- | setButtonGrab. Tell whether or not to intercept clicks on a given window
 setButtonGrab :: Bool -> Window -> X ()
-setButtonGrab grab w = withDisplay $ \d -> io $
-    if grab
+setButtonGrab grab w = do
+    pointerMode <- asks $ \c -> if clickJustFocuses (config c)
+                                    then grabModeAsync
+                                    else grabModeSync
+    withDisplay $ \d -> io $ if grab
         then forM_ [button1, button2, button3] $ \b ->
             grabButton d b anyModifier w False buttonPressMask
-                       grabModeSync grabModeSync none none
+                       pointerMode grabModeSync none none
         else ungrabButton d anyButton anyModifier w
 
 -- ---------------------------------------------------------------------