[mutter/wip/carlosg/fix-net-active-window] x11: Minor refactor of input focus handling code

[Carlos Garnacho <carlosg src gnome org>]

commit b7e16b744a0fba70a70dd18d1ce2e4e2efcf786a
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Sep 5 13:17:21 2019 +0200

    x11: Minor refactor of input focus handling code
    
    Instead of open coding the X11 focus management in display.c, expose
    it as a single function with similar arguments to its MetaDisplay
    counterpart. This just means less X11 specifics in display.c.
    
    Closes: https://gitlab.gnome.org/GNOME/mutter/issues/751

 src/core/display.c                 | 19 ++-----------------
 src/x11/meta-x11-display-private.h |  6 +++---
 src/x11/meta-x11-display.c         | 33 +++++++++++++++++++++++++++------
 3 files changed, 32 insertions(+), 26 deletions(-)
---
diff --git a/src/core/display.c b/src/core/display.c
index e803f5557..d9ce6668a 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -1361,23 +1361,8 @@ meta_display_set_input_focus (MetaDisplay *display,
 
   if (display->x11_display)
     {
-      MetaX11Display *x11_display = display->x11_display;
-      Window xwindow;
-      gulong serial;
-
-      meta_x11_error_trap_push (x11_display);
-
-      if (window)
-        xwindow = focus_frame ? window->frame->xwindow : window->xwindow;
-      else
-        xwindow = x11_display->no_focus_window;
-
-      meta_x11_display_set_input_focus (x11_display, xwindow, timestamp);
-      serial = XNextRequest (x11_display->xdisplay);
-
-      meta_x11_display_update_focus_window (x11_display, xwindow, serial, TRUE);
-
-      meta_x11_error_trap_pop (display->x11_display);
+      meta_x11_display_set_input_focus (display->x11_display, window,
+                                        focus_frame, timestamp);
     }
 
   meta_display_update_focus_window (display, window);
diff --git a/src/x11/meta-x11-display-private.h b/src/x11/meta-x11-display-private.h
index 92951844e..7c61d7b0d 100644
--- a/src/x11/meta-x11-display-private.h
+++ b/src/x11/meta-x11-display-private.h
@@ -224,7 +224,6 @@ void meta_x11_display_create_guard_window (MetaX11Display *x11_display);
 
 /* make a request to ensure the event serial has changed */
 void meta_x11_display_increment_event_serial    (MetaX11Display *x11_display);
-void meta_x11_display_update_active_window_hint (MetaX11Display *x11_display);
 
 guint32 meta_x11_display_get_current_time_roundtrip (MetaX11Display *x11_display);
 
@@ -250,8 +249,9 @@ void meta_x11_display_update_focus_window (MetaX11Display *x11_display,
                                            gulong          serial,
                                            gboolean        focused_by_us);
 void meta_x11_display_set_input_focus (MetaX11Display *x11_display,
-                                       Window          xwindow,
-                                       guint32         timestamp);
+                                       MetaWindow     *window,
+                                       gboolean        focus_frame,
+                                       uint32_t        timestamp);
 
 const gchar * meta_x11_get_display_name (void);
 
diff --git a/src/x11/meta-x11-display.c b/src/x11/meta-x11-display.c
index 5f2e71c44..77283d323 100644
--- a/src/x11/meta-x11-display.c
+++ b/src/x11/meta-x11-display.c
@@ -1825,7 +1825,7 @@ meta_x11_display_increment_event_serial (MetaX11Display *x11_display)
                    x11_display->atom__MOTIF_WM_HINTS);
 }
 
-void
+static void
 meta_x11_display_update_active_window_hint (MetaX11Display *x11_display)
 {
   MetaWindow *focus_window;
@@ -1867,10 +1867,10 @@ meta_x11_display_update_focus_window (MetaX11Display *x11_display,
   meta_x11_display_update_active_window_hint (x11_display);
 }
 
-void
-meta_x11_display_set_input_focus (MetaX11Display *x11_display,
-                                  Window          xwindow,
-                                  guint32         timestamp)
+static void
+meta_x11_display_set_input_focus_internal (MetaX11Display *x11_display,
+                                           Window          xwindow,
+                                           uint32_t        timestamp)
 {
   meta_x11_error_trap_push (x11_display);
 
@@ -1900,6 +1900,27 @@ meta_x11_display_set_input_focus (MetaX11Display *x11_display,
   meta_x11_error_trap_pop (x11_display);
 }
 
+void
+meta_x11_display_set_input_focus (MetaX11Display *x11_display,
+                                  MetaWindow     *window,
+                                  gboolean        focus_frame,
+                                  uint32_t        timestamp)
+{
+  Window xwindow;
+  gulong serial;
+
+  if (window)
+    xwindow = focus_frame ? window->frame->xwindow : window->xwindow;
+  else
+    xwindow = x11_display->no_focus_window;
+
+  meta_x11_error_trap_push (x11_display);
+  meta_x11_display_set_input_focus_internal (x11_display, xwindow, timestamp);
+  serial = XNextRequest (x11_display->xdisplay);
+  meta_x11_display_update_focus_window (x11_display, xwindow, serial, TRUE);
+  meta_x11_error_trap_pop (x11_display);
+}
+
 void
 meta_x11_display_set_input_focus_xwindow (MetaX11Display *x11_display,
                                           Window          window,
@@ -1909,7 +1930,7 @@ meta_x11_display_set_input_focus_xwindow (MetaX11Display *x11_display,
 
   meta_display_unset_input_focus (x11_display->display, timestamp);
   serial = XNextRequest (x11_display->xdisplay);
-  meta_x11_display_set_input_focus (x11_display, window, timestamp);
+  meta_x11_display_set_input_focus_internal (x11_display, window, timestamp);
   meta_x11_display_update_focus_window (x11_display, window, serial, TRUE);
 }