[mutter/bilelmoussaoui/keybindings: 124/124] x11: Move X11 specific functions to x11/keybindings

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit 90b2cd0158be5f82c4c8f05227a3970c349e412f
Author: Bilal Elmoussaoui <belmouss redhat com>
Date:   Mon Jun 20 13:00:08 2022 +0200

    x11: Move X11 specific functions to x11/keybindings

 src/core/display-private.h         |  11 -
 src/core/frame.c                   |   2 +-
 src/core/keybindings-private.h     |   7 -
 src/core/keybindings.c             | 461 +------------------------------------
 src/core/window.c                  |   2 +-
 src/meson.build                    |   2 +
 src/x11/keybindings-x11-private.h  |  20 ++
 src/x11/keybindings-x11.c          | 440 +++++++++++++++++++++++++++++++++++
 src/x11/meta-x11-display-private.h |  10 +
 src/x11/meta-x11-display.c         |   1 +
 src/x11/window-x11.c               |   1 +
 11 files changed, 481 insertions(+), 476 deletions(-)
---
diff --git a/src/core/display-private.h b/src/core/display-private.h
index e33fd61de0..1449b4dd93 100644
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -316,17 +316,6 @@ void meta_display_update_cursor (MetaDisplay *display);
 void    meta_display_check_threshold_reached (MetaDisplay *display,
                                               int          x,
                                               int          y);
-#ifdef HAVE_X11_CLIENT
-void     meta_display_grab_window_buttons    (MetaDisplay *display,
-                                              Window       xwindow);
-void     meta_display_ungrab_window_buttons  (MetaDisplay *display,
-                                              Window       xwindow);
-
-void meta_display_grab_focus_window_button   (MetaDisplay *display,
-                                              MetaWindow  *window);
-void meta_display_ungrab_focus_window_button (MetaDisplay *display,
-                                              MetaWindow  *window);
-#endif
 
 /* Next function is defined in edge-resistance.c */
 void meta_display_cleanup_edges              (MetaDisplay *display);
diff --git a/src/core/frame.c b/src/core/frame.c
index 9c8cbb9464..785ccedf7f 100644
--- a/src/core/frame.c
+++ b/src/core/frame.c
@@ -27,8 +27,8 @@
 
 #include "backends/x11/meta-backend-x11.h"
 #include "core/bell.h"
-#include "core/keybindings-private.h"
 #include "meta/meta-x11-errors.h"
+#include "x11/keybindings-x11-private.h"
 #include "x11/meta-x11-display-private.h"
 
 #define EVENT_MASK (SubstructureRedirectMask |                     \
diff --git a/src/core/keybindings-private.h b/src/core/keybindings-private.h
index 449247e0e6..6100ecc658 100644
--- a/src/core/keybindings-private.h
+++ b/src/core/keybindings-private.h
@@ -131,8 +131,6 @@ typedef struct
 
 void     meta_display_init_keys             (MetaDisplay *display);
 void     meta_display_shutdown_keys         (MetaDisplay *display);
-void     meta_window_grab_keys              (MetaWindow  *window);
-void     meta_window_ungrab_keys            (MetaWindow  *window);
 gboolean meta_window_grab_all_keys          (MetaWindow  *window,
                                              guint32      timestamp);
 void     meta_window_ungrab_all_keys        (MetaWindow  *window,
@@ -154,9 +152,4 @@ void meta_prefs_get_locate_pointer_binding (MetaKeyCombo *combo);
 const char *meta_prefs_get_iso_next_group_option (void);
 gboolean meta_prefs_is_locate_pointer_enabled (void);
 
-#ifdef HAVE_X11_CLIENT
-void meta_x11_display_grab_keys   (MetaX11Display *x11_display);
-void meta_x11_display_ungrab_keys (MetaX11Display *x11_display);
-#endif
-
 #endif
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index c3a7f28c64..d64980de63 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -35,7 +35,6 @@
 #include "backends/meta-monitor-manager-private.h"
 #include "compositor/compositor-private.h"
 #include "core/edge-resistance.h"
-#include "core/frame.h"
 #include "core/keybindings-private.h"
 #include "core/meta-accel-parse.h"
 #include "core/meta-workspace-manager-private.h"
@@ -46,9 +45,8 @@
 #ifdef HAVE_X11_CLIENT
 #include "backends/x11/meta-backend-x11.h"
 #include "backends/x11/meta-input-device-x11.h"
-#include "meta/meta-x11-errors.h"
+#include "x11/keybindings-x11-private.h"
 #include "x11/meta-x11-display-private.h"
-#include "x11/window-x11.h"
 #endif
 
 #ifdef HAVE_NATIVE_BACKEND
@@ -196,11 +194,6 @@ static gboolean process_keyboard_resize_grab (MetaDisplay     *display,
                                               MetaWindow      *window,
                                               ClutterKeyEvent *event);
 
-#ifdef HAVE_X11_CLIENT
-static void maybe_update_locate_pointer_keygrab (MetaDisplay *display,
-                                                 gboolean     grab);
-#endif
-
 static GHashTable *key_handlers;
 static GHashTable *external_grabs;
 
@@ -897,44 +890,6 @@ rebuild_special_bindings (MetaKeyBindingManager *keys)
   keys->locate_pointer_key_combo = combo;
 }
 
-#ifdef HAVE_X11_CLIENT
-static void
-ungrab_key_bindings (MetaDisplay *display)
-{
-  GSList *windows, *l;
-
-  if (display->x11_display)
-    meta_x11_display_ungrab_keys (display->x11_display);
-
-  windows = meta_display_list_windows (display, META_LIST_DEFAULT);
-  for (l = windows; l; l = l->next)
-    {
-      MetaWindow *w = l->data;
-      meta_window_ungrab_keys (w);
-    }
-
-  g_slist_free (windows);
-}
-
-static void
-grab_key_bindings (MetaDisplay *display)
-{
-  GSList *windows, *l;
-
-  if (display->x11_display)
-    meta_x11_display_grab_keys (display->x11_display);
-
-  windows = meta_display_list_windows (display, META_LIST_DEFAULT);
-  for (l = windows; l; l = l->next)
-    {
-      MetaWindow *w = l->data;
-      meta_window_grab_keys (w);
-    }
-
-  g_slist_free (windows);
-}
-#endif
-
 static MetaKeyBinding *
 get_keybinding (MetaKeyBindingManager *keys,
                 MetaResolvedKeyCombo  *resolved_combo)
@@ -1147,7 +1102,7 @@ reload_keybindings (MetaDisplay *display)
   MetaKeyBindingManager *keys = &display->key_binding_manager;
 
 #ifdef HAVE_X11_CLIENT
-  ungrab_key_bindings (display);
+  meta_x11_display_ungrab_key_bindings (display);
 #endif
 
   /* Deciphering the modmap depends on the loaded keysyms to find out
@@ -1157,87 +1112,10 @@ reload_keybindings (MetaDisplay *display)
 
   reload_combos (keys);
 #ifdef HAVE_X11_CLIENT
-  grab_key_bindings (display);
+  meta_x11_display_grab_key_bindings (display);
 #endif
 }
 
-#ifdef HAVE_X11_CLIENT
-static GArray *
-calc_grab_modifiers (MetaKeyBindingManager *keys,
-                     unsigned int modmask)
-{
-  unsigned int ignored_mask;
-  XIGrabModifiers mods;
-  GArray *mods_array = g_array_new (FALSE, TRUE, sizeof (XIGrabModifiers));
-
-  /* The X server crashes if XIAnyModifier gets passed in with any
-     other bits. It doesn't make sense to ask for a grab of
-     XIAnyModifier plus other bits anyway so we avoid that. */
-  if (modmask & XIAnyModifier)
-    {
-      mods = (XIGrabModifiers) { XIAnyModifier, 0 };
-      g_array_append_val (mods_array, mods);
-      return mods_array;
-    }
-
-  mods = (XIGrabModifiers) { modmask, 0 };
-  g_array_append_val (mods_array, mods);
-
-  for (ignored_mask = 1;
-       ignored_mask <= keys->ignored_modifier_mask;
-       ++ignored_mask)
-    {
-      if (ignored_mask & keys->ignored_modifier_mask)
-        {
-          mods = (XIGrabModifiers) { modmask | ignored_mask, 0 };
-          g_array_append_val (mods_array, mods);
-        }
-    }
-
-  return mods_array;
-}
-
-static void
-meta_change_button_grab (MetaKeyBindingManager *keys,
-                         Window                  xwindow,
-                         gboolean                grab,
-                         gboolean                sync,
-                         int                     button,
-                         int                     modmask)
-{
-  if (meta_is_wayland_compositor ())
-    return;
-
-  MetaBackendX11 *backend = META_BACKEND_X11 (keys->backend);
-  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
-
-  unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
-  XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };
-  GArray *mods;
-
-  XISetMask (mask.mask, XI_ButtonPress);
-  XISetMask (mask.mask, XI_ButtonRelease);
-  XISetMask (mask.mask, XI_Motion);
-
-  mods = calc_grab_modifiers (keys, modmask);
-
-  /* GrabModeSync means freeze until XAllowEvents */
-  if (grab)
-    XIGrabButton (xdisplay,
-                  META_VIRTUAL_CORE_POINTER_ID,
-                  button, xwindow, None,
-                  sync ? XIGrabModeSync : XIGrabModeAsync,
-                  XIGrabModeAsync, False,
-                  &mask, mods->len, (XIGrabModifiers *)mods->data);
-  else
-    XIUngrabButton (xdisplay,
-                    META_VIRTUAL_CORE_POINTER_ID,
-                    button, xwindow, mods->len, (XIGrabModifiers *)mods->data);
-
-  g_array_free (mods, TRUE);
-}
-#endif
-
 ClutterModifierType
 meta_display_get_compositor_modifiers (MetaDisplay *display)
 {
@@ -1245,71 +1123,6 @@ meta_display_get_compositor_modifiers (MetaDisplay *display)
   return keys->window_grab_modifiers;
 }
 
-#ifdef HAVE_X11_CLIENT
-static void
-meta_change_buttons_grab (MetaKeyBindingManager *keys,
-                          Window                 xwindow,
-                          gboolean               grab,
-                          gboolean               sync,
-                          int                    modmask)
-{
-#define MAX_BUTTON 3
-
-  int i;
-  for (i = 1; i <= MAX_BUTTON; i++)
-    meta_change_button_grab (keys, xwindow, grab, sync, i, modmask);
-}
-
-void
-meta_display_grab_window_buttons (MetaDisplay *display,
-                                  Window       xwindow)
-{
-  MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-  /* Grab Alt + button1 for moving window.
-   * Grab Alt + button2 for resizing window.
-   * Grab Alt + button3 for popping up window menu.
-   * Grab Alt + Shift + button1 for snap-moving window.
-   */
-  meta_verbose ("Grabbing window buttons for 0x%lx", xwindow);
-
-  /* FIXME If we ignored errors here instead of spewing, we could
-   * put one big error trap around the loop and avoid a bunch of
-   * XSync()
-   */
-
-  if (keys->window_grab_modifiers != 0)
-    {
-      meta_change_buttons_grab (keys, xwindow, TRUE, FALSE,
-                                keys->window_grab_modifiers);
-
-      /* In addition to grabbing Alt+Button1 for moving the window,
-       * grab Alt+Shift+Button1 for snap-moving the window.  See bug
-       * 112478.  Unfortunately, this doesn't work with
-       * Shift+Alt+Button1 for some reason; so at least part of the
-       * order still matters, which sucks (please FIXME).
-       */
-      meta_change_button_grab (keys, xwindow,
-                               TRUE,
-                               FALSE,
-                               1, keys->window_grab_modifiers | ShiftMask);
-    }
-}
-
-void
-meta_display_ungrab_window_buttons (MetaDisplay *display,
-                                    Window       xwindow)
-{
-  MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-  if (keys->window_grab_modifiers == 0)
-    return;
-
-  meta_change_buttons_grab (keys, xwindow, FALSE, FALSE,
-                            keys->window_grab_modifiers);
-}
-#endif /* HAVE_X11_CLIENT */
-
 static void
 update_window_grab_modifiers (MetaDisplay *display)
 {
@@ -1327,47 +1140,6 @@ update_window_grab_modifiers (MetaDisplay *display)
     }
 }
 
-#ifdef HAVE_X11_CLIENT
-void
-meta_display_grab_focus_window_button (MetaDisplay *display,
-                                       MetaWindow  *window)
-{
-  MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-  /* Grab button 1 for activating unfocused windows */
-  meta_verbose ("Grabbing unfocused window buttons for %s", window->desc);
-
-  if (window->have_focus_click_grab)
-    {
-      meta_verbose (" (well, not grabbing since we already have the grab)");
-      return;
-    }
-
-  /* FIXME If we ignored errors here instead of spewing, we could
-   * put one big error trap around the loop and avoid a bunch of
-   * XSync()
-   */
-
-  meta_change_buttons_grab (keys, window->xwindow, TRUE, TRUE, XIAnyModifier);
-  window->have_focus_click_grab = TRUE;
-}
-
-void
-meta_display_ungrab_focus_window_button (MetaDisplay *display,
-                                         MetaWindow  *window)
-{
-  MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-  meta_verbose ("Ungrabbing unfocused window buttons for %s", window->desc);
-
-  if (!window->have_focus_click_grab)
-    return;
-
-  meta_change_buttons_grab (keys, window->xwindow, FALSE, FALSE, XIAnyModifier);
-  window->have_focus_click_grab = FALSE;
-}
-#endif
-
 static void
 prefs_changed_callback (MetaPreference pref,
                         void          *data)
@@ -1385,13 +1157,13 @@ prefs_changed_callback (MetaPreference pref,
       break;
     case META_PREF_KEYBINDINGS:
 #ifdef HAVE_X11_CLIENT
-      ungrab_key_bindings (display);
+      meta_x11_display_ungrab_key_bindings (display);
 #endif
       rebuild_key_binding_table (keys);
       rebuild_special_bindings (keys);
       reload_combos (keys);
 #ifdef HAVE_X11_CLIENT
-      grab_key_bindings (display);
+      meta_x11_display_grab_key_bindings (display);
 #endif
       break;
     case META_PREF_MOUSE_BUTTON_MODS:
@@ -1438,229 +1210,6 @@ meta_display_shutdown_keys (MetaDisplay *display)
   clear_active_keyboard_layouts (keys);
 }
 
-/* Grab/ungrab, ignoring all annoying modifiers like NumLock etc. */
-#ifdef HAVE_X11_CLIENT
-static void
-meta_change_keygrab (MetaKeyBindingManager *keys,
-                     Window                 xwindow,
-                     gboolean               grab,
-                     MetaResolvedKeyCombo  *resolved_combo)
-{
-  unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
-  XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };
-
-  XISetMask (mask.mask, XI_KeyPress);
-  XISetMask (mask.mask, XI_KeyRelease);
-
-  MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
-  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
-  GArray *mods;
-  int i;
-
-  /* Grab keycode/modmask, together with
-   * all combinations of ignored modifiers.
-   * X provides no better way to do this.
-   */
-
-  mods = calc_grab_modifiers (keys, resolved_combo->mask);
-
-  for (i = 0; i < resolved_combo->len; i++)
-    {
-      xkb_keycode_t keycode = resolved_combo->keycodes[i];
-
-      meta_topic (META_DEBUG_KEYBINDINGS,
-                  "%s keybinding keycode %d mask 0x%x on 0x%lx",
-                  grab ? "Grabbing" : "Ungrabbing",
-                  keycode, resolved_combo->mask, xwindow);
-
-      if (grab)
-        XIGrabKeycode (xdisplay,
-                       META_VIRTUAL_CORE_KEYBOARD_ID,
-                       keycode, xwindow,
-                       XIGrabModeSync, XIGrabModeAsync,
-                       False, &mask, mods->len, (XIGrabModifiers *)mods->data);
-      else
-        XIUngrabKeycode (xdisplay,
-                         META_VIRTUAL_CORE_KEYBOARD_ID,
-                         keycode, xwindow,
-                         mods->len, (XIGrabModifiers *)mods->data);
-    }
-
-  g_array_free (mods, TRUE);
-}
-
-typedef struct
-{
-  MetaKeyBindingManager *keys;
-  Window xwindow;
-  gboolean only_per_window;
-  gboolean grab;
-} ChangeKeygrabData;
-
-static void
-change_keygrab_foreach (gpointer key,
-                        gpointer value,
-                        gpointer user_data)
-{
-  ChangeKeygrabData *data = user_data;
-  MetaKeyBinding *binding = value;
-  gboolean binding_is_per_window = (binding->flags & META_KEY_BINDING_PER_WINDOW) != 0;
-
-  if (data->only_per_window != binding_is_per_window)
-    return;
-
-  /* Ignore the key bindings marked as META_KEY_BINDING_NO_AUTO_GRAB,
-   * those are handled separately
-   */
-  if (binding->flags & META_KEY_BINDING_NO_AUTO_GRAB)
-    return;
-
-  if (binding->resolved_combo.len == 0)
-    return;
-
-  meta_change_keygrab (data->keys, data->xwindow, data->grab, &binding->resolved_combo);
-}
-
-static void
-change_binding_keygrabs (MetaKeyBindingManager *keys,
-                         Window                 xwindow,
-                         gboolean               only_per_window,
-                         gboolean               grab)
-{
-  ChangeKeygrabData data;
-
-  data.keys = keys;
-  data.xwindow = xwindow;
-  data.only_per_window = only_per_window;
-  data.grab = grab;
-
-  g_hash_table_foreach (keys->key_bindings, change_keygrab_foreach, &data);
-}
-
-static void
-maybe_update_locate_pointer_keygrab (MetaDisplay *display,
-                                     gboolean     grab)
-{
-  MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-  if (!display->x11_display)
-    return;
-
-  if (keys->locate_pointer_resolved_key_combo.len != 0)
-    meta_change_keygrab (keys, display->x11_display->xroot,
-                         (!!grab & !!meta_prefs_is_locate_pointer_enabled()),
-                         &keys->locate_pointer_resolved_key_combo);
-}
-
-static void
-meta_x11_display_change_keygrabs (MetaX11Display *x11_display,
-                                  gboolean        grab)
-{
-  MetaKeyBindingManager *keys = &x11_display->display->key_binding_manager;
-  int i;
-
-  if (keys->overlay_resolved_key_combo.len != 0)
-    meta_change_keygrab (keys, x11_display->xroot,
-                         grab, &keys->overlay_resolved_key_combo);
-
-  maybe_update_locate_pointer_keygrab (x11_display->display, grab);
-
-  for (i = 0; i < keys->n_iso_next_group_combos; i++)
-    meta_change_keygrab (keys, x11_display->xroot,
-                         grab, &keys->iso_next_group_combo[i]);
-
-  change_binding_keygrabs (keys, x11_display->xroot,
-                           FALSE, grab);
-}
-
-void
-meta_x11_display_grab_keys (MetaX11Display *x11_display)
-{
-  if (x11_display->keys_grabbed)
-    return;
-
-  meta_x11_display_change_keygrabs (x11_display, TRUE);
-
-  x11_display->keys_grabbed = TRUE;
-}
-
-void
-meta_x11_display_ungrab_keys (MetaX11Display *x11_display)
-{
-  if (!x11_display->keys_grabbed)
-    return;
-
-  meta_x11_display_change_keygrabs (x11_display, FALSE);
-
-  x11_display->keys_grabbed = FALSE;
-}
-
-static void
-change_window_keygrabs (MetaKeyBindingManager *keys,
-                        Window                 xwindow,
-                        gboolean               grab)
-{
-  change_binding_keygrabs (keys, xwindow, TRUE, grab);
-}
-
-void
-meta_window_grab_keys (MetaWindow  *window)
-{
-  MetaDisplay *display = window->display;
-  MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-  if (meta_is_wayland_compositor ())
-    return;
-  if (window->all_keys_grabbed)
-    return;
-
-  if (window->type == META_WINDOW_DOCK
-      || window->override_redirect)
-    {
-      if (window->keys_grabbed)
-        change_window_keygrabs (keys, window->xwindow, FALSE);
-      window->keys_grabbed = FALSE;
-      return;
-    }
-
-  if (window->keys_grabbed)
-    {
-      if (window->frame && !window->grab_on_frame)
-        change_window_keygrabs (keys, window->xwindow, FALSE);
-      else if (window->frame == NULL &&
-               window->grab_on_frame)
-        ; /* continue to regrab on client window */
-      else
-        return; /* already all good */
-    }
-
-  change_window_keygrabs (keys,
-                          meta_window_x11_get_toplevel_xwindow (window),
-                          TRUE);
-
-  window->keys_grabbed = TRUE;
-  window->grab_on_frame = window->frame != NULL;
-}
-
-void
-meta_window_ungrab_keys (MetaWindow  *window)
-{
-  if (!meta_is_wayland_compositor () && window->keys_grabbed)
-    {
-      MetaDisplay *display = window->display;
-      MetaKeyBindingManager *keys = &display->key_binding_manager;
-
-      if (window->grab_on_frame &&
-          window->frame != NULL)
-        change_window_keygrabs (keys, window->frame->xwindow, FALSE);
-      else if (!window->grab_on_frame)
-        change_window_keygrabs (keys, window->xwindow, FALSE);
-
-      window->keys_grabbed = FALSE;
-    }
-}
-#endif /* HAVE_X11_CLIENT */
-
 static void
 handle_external_grab (MetaDisplay     *display,
                       MetaWindow      *window,
diff --git a/src/core/window.c b/src/core/window.c
index 0eef063b07..2a093a6857 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -74,7 +74,6 @@
 #include "core/constraints.h"
 #include "core/edge-resistance.h"
 #include "core/frame.h"
-#include "core/keybindings-private.h"
 #include "core/meta-workspace-manager-private.h"
 #include "core/place.h"
 #include "core/stack.h"
@@ -89,6 +88,7 @@
 #include "meta/group.h"
 #include "ui/ui.h"
 #include "meta/meta-x11-errors.h"
+#include "x11/keybindings-x11-private.h"
 #include "x11/meta-x11-display-private.h"
 #include "x11/window-props.h"
 #include "x11/window-x11.h"
diff --git a/src/meson.build b/src/meson.build
index fbe9fb8354..f0a7d82ce1 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -444,6 +444,8 @@ if have_x11_client
     'x11/group-props.h',
     'x11/iconcache.c',
     'x11/iconcache.h',
+    'x11/keybindings-x11.c',
+    'x11/keybindings-x11-private.h',
     'x11/meta-selection-source-x11.c',
     'x11/meta-selection-source-x11-private.h',
     'x11/meta-startup-notification-x11.c',
diff --git a/src/x11/keybindings-x11-private.h b/src/x11/keybindings-x11-private.h
new file mode 100644
index 0000000000..bec3d85c5a
--- /dev/null
+++ b/src/x11/keybindings-x11-private.h
@@ -0,0 +1,20 @@
+#ifndef META_KEYBINDINGS_X11_PRIVATE_H
+#define META_KEYBINDINGS_X11_PRIVATE_H
+
+void meta_window_grab_keys (MetaWindow *window);
+void meta_window_ungrab_keys (MetaWindow *window);
+
+void meta_x11_display_grab_keys   (MetaX11Display *x11_display);
+void meta_x11_display_ungrab_keys (MetaX11Display *x11_display);
+void meta_x11_display_ungrab_key_bindings (MetaDisplay *display);
+void meta_x11_display_grab_key_bindings (MetaDisplay *display);
+
+void maybe_update_locate_pointer_keygrab (MetaDisplay *display,
+                                          gboolean     grab);
+
+void meta_change_keygrab (MetaKeyBindingManager *keys,
+                          Window                 xwindow,
+                          gboolean               grab,
+                          MetaResolvedKeyCombo  *resolved_combo);
+
+#endif
diff --git a/src/x11/keybindings-x11.c b/src/x11/keybindings-x11.c
new file mode 100644
index 0000000000..240d262e53
--- /dev/null
+++ b/src/x11/keybindings-x11.c
@@ -0,0 +1,440 @@
+#include "backends/x11/meta-backend-x11.h"
+#include "backends/x11/meta-input-device-x11.h"
+#include "core/frame.h"
+#include "x11/keybindings-x11-private.h"
+#include "x11/meta-x11-display-private.h"
+#include "x11/window-x11.h"
+
+static GArray *
+calc_grab_modifiers (MetaKeyBindingManager *keys,
+                     unsigned int modmask)
+{
+  unsigned int ignored_mask;
+  XIGrabModifiers mods;
+  GArray *mods_array = g_array_new (FALSE, TRUE, sizeof (XIGrabModifiers));
+
+  /* The X server crashes if XIAnyModifier gets passed in with any
+     other bits. It doesn't make sense to ask for a grab of
+     XIAnyModifier plus other bits anyway so we avoid that. */
+  if (modmask & XIAnyModifier)
+    {
+      mods = (XIGrabModifiers) { XIAnyModifier, 0 };
+      g_array_append_val (mods_array, mods);
+      return mods_array;
+    }
+
+  mods = (XIGrabModifiers) { modmask, 0 };
+  g_array_append_val (mods_array, mods);
+
+  for (ignored_mask = 1;
+       ignored_mask <= keys->ignored_modifier_mask;
+       ++ignored_mask)
+    {
+      if (ignored_mask & keys->ignored_modifier_mask)
+        {
+          mods = (XIGrabModifiers) { modmask | ignored_mask, 0 };
+          g_array_append_val (mods_array, mods);
+        }
+    }
+
+  return mods_array;
+}
+
+static void
+meta_change_button_grab (MetaKeyBindingManager *keys,
+                         Window                  xwindow,
+                         gboolean                grab,
+                         gboolean                sync,
+                         int                     button,
+                         int                     modmask)
+{
+  if (meta_is_wayland_compositor ())
+    return;
+
+  MetaBackendX11 *backend = META_BACKEND_X11 (keys->backend);
+  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
+
+  unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
+  XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };
+  GArray *mods;
+
+  XISetMask (mask.mask, XI_ButtonPress);
+  XISetMask (mask.mask, XI_ButtonRelease);
+  XISetMask (mask.mask, XI_Motion);
+
+  mods = calc_grab_modifiers (keys, modmask);
+
+  /* GrabModeSync means freeze until XAllowEvents */
+  if (grab)
+    XIGrabButton (xdisplay,
+                  META_VIRTUAL_CORE_POINTER_ID,
+                  button, xwindow, None,
+                  sync ? XIGrabModeSync : XIGrabModeAsync,
+                  XIGrabModeAsync, False,
+                  &mask, mods->len, (XIGrabModifiers *)mods->data);
+  else
+    XIUngrabButton (xdisplay,
+                    META_VIRTUAL_CORE_POINTER_ID,
+                    button, xwindow, mods->len, (XIGrabModifiers *)mods->data);
+
+  g_array_free (mods, TRUE);
+}
+
+static void
+meta_change_buttons_grab (MetaKeyBindingManager *keys,
+                          Window                 xwindow,
+                          gboolean               grab,
+                          gboolean               sync,
+                          int                    modmask)
+{
+#define MAX_BUTTON 3
+
+  int i;
+  for (i = 1; i <= MAX_BUTTON; i++)
+    meta_change_button_grab (keys, xwindow, grab, sync, i, modmask);
+}
+
+void
+meta_display_grab_window_buttons (MetaDisplay *display,
+                                  Window       xwindow)
+{
+  MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+  /* Grab Alt + button1 for moving window.
+   * Grab Alt + button2 for resizing window.
+   * Grab Alt + button3 for popping up window menu.
+   * Grab Alt + Shift + button1 for snap-moving window.
+   */
+  meta_verbose ("Grabbing window buttons for 0x%lx", xwindow);
+
+  /* FIXME If we ignored errors here instead of spewing, we could
+   * put one big error trap around the loop and avoid a bunch of
+   * XSync()
+   */
+
+  if (keys->window_grab_modifiers != 0)
+    {
+      meta_change_buttons_grab (keys, xwindow, TRUE, FALSE,
+                                keys->window_grab_modifiers);
+
+      /* In addition to grabbing Alt+Button1 for moving the window,
+       * grab Alt+Shift+Button1 for snap-moving the window.  See bug
+       * 112478.  Unfortunately, this doesn't work with
+       * Shift+Alt+Button1 for some reason; so at least part of the
+       * order still matters, which sucks (please FIXME).
+       */
+      meta_change_button_grab (keys, xwindow,
+                               TRUE,
+                               FALSE,
+                               1, keys->window_grab_modifiers | ShiftMask);
+    }
+}
+
+void
+meta_display_ungrab_window_buttons (MetaDisplay *display,
+                                    Window       xwindow)
+{
+  MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+  if (keys->window_grab_modifiers == 0)
+    return;
+
+  meta_change_buttons_grab (keys, xwindow, FALSE, FALSE,
+                            keys->window_grab_modifiers);
+}
+
+void
+meta_display_grab_focus_window_button (MetaDisplay *display,
+                                       MetaWindow  *window)
+{
+  MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+  /* Grab button 1 for activating unfocused windows */
+  meta_verbose ("Grabbing unfocused window buttons for %s", window->desc);
+
+  if (window->have_focus_click_grab)
+    {
+      meta_verbose (" (well, not grabbing since we already have the grab)");
+      return;
+    }
+
+  /* FIXME If we ignored errors here instead of spewing, we could
+   * put one big error trap around the loop and avoid a bunch of
+   * XSync()
+   */
+
+  meta_change_buttons_grab (keys, window->xwindow, TRUE, TRUE, XIAnyModifier);
+  window->have_focus_click_grab = TRUE;
+}
+
+void
+meta_display_ungrab_focus_window_button (MetaDisplay *display,
+                                         MetaWindow  *window)
+{
+  MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+  meta_verbose ("Ungrabbing unfocused window buttons for %s", window->desc);
+
+  if (!window->have_focus_click_grab)
+    return;
+
+  meta_change_buttons_grab (keys, window->xwindow, FALSE, FALSE, XIAnyModifier);
+  window->have_focus_click_grab = FALSE;
+}
+
+/* Grab/ungrab, ignoring all annoying modifiers like NumLock etc. */
+void
+meta_change_keygrab (MetaKeyBindingManager *keys,
+                     Window                 xwindow,
+                     gboolean               grab,
+                     MetaResolvedKeyCombo  *resolved_combo)
+{
+  unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
+  XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };
+
+  XISetMask (mask.mask, XI_KeyPress);
+  XISetMask (mask.mask, XI_KeyRelease);
+
+  MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
+  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
+  GArray *mods;
+  int i;
+
+  /* Grab keycode/modmask, together with
+   * all combinations of ignored modifiers.
+   * X provides no better way to do this.
+   */
+
+  mods = calc_grab_modifiers (keys, resolved_combo->mask);
+
+  for (i = 0; i < resolved_combo->len; i++)
+    {
+      xkb_keycode_t keycode = resolved_combo->keycodes[i];
+
+      meta_topic (META_DEBUG_KEYBINDINGS,
+                  "%s keybinding keycode %d mask 0x%x on 0x%lx",
+                  grab ? "Grabbing" : "Ungrabbing",
+                  keycode, resolved_combo->mask, xwindow);
+
+      if (grab)
+        XIGrabKeycode (xdisplay,
+                       META_VIRTUAL_CORE_KEYBOARD_ID,
+                       keycode, xwindow,
+                       XIGrabModeSync, XIGrabModeAsync,
+                       False, &mask, mods->len, (XIGrabModifiers *)mods->data);
+      else
+        XIUngrabKeycode (xdisplay,
+                         META_VIRTUAL_CORE_KEYBOARD_ID,
+                         keycode, xwindow,
+                         mods->len, (XIGrabModifiers *)mods->data);
+    }
+
+  g_array_free (mods, TRUE);
+}
+
+typedef struct
+{
+  MetaKeyBindingManager *keys;
+  Window xwindow;
+  gboolean only_per_window;
+  gboolean grab;
+} ChangeKeygrabData;
+
+static void
+change_keygrab_foreach (gpointer key,
+                        gpointer value,
+                        gpointer user_data)
+{
+  ChangeKeygrabData *data = user_data;
+  MetaKeyBinding *binding = value;
+  gboolean binding_is_per_window = (binding->flags & META_KEY_BINDING_PER_WINDOW) != 0;
+
+  if (data->only_per_window != binding_is_per_window)
+    return;
+
+  /* Ignore the key bindings marked as META_KEY_BINDING_NO_AUTO_GRAB,
+   * those are handled separately
+   */
+  if (binding->flags & META_KEY_BINDING_NO_AUTO_GRAB)
+    return;
+
+  if (binding->resolved_combo.len == 0)
+    return;
+
+  meta_change_keygrab (data->keys, data->xwindow, data->grab, &binding->resolved_combo);
+}
+
+static void
+change_binding_keygrabs (MetaKeyBindingManager *keys,
+                         Window                 xwindow,
+                         gboolean               only_per_window,
+                         gboolean               grab)
+{
+  ChangeKeygrabData data;
+
+  data.keys = keys;
+  data.xwindow = xwindow;
+  data.only_per_window = only_per_window;
+  data.grab = grab;
+
+  g_hash_table_foreach (keys->key_bindings, change_keygrab_foreach, &data);
+}
+
+void
+maybe_update_locate_pointer_keygrab (MetaDisplay *display,
+                                     gboolean     grab)
+{
+  MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+  if (!display->x11_display)
+    return;
+
+  if (keys->locate_pointer_resolved_key_combo.len != 0)
+    meta_change_keygrab (keys, display->x11_display->xroot,
+                         (!!grab & !!meta_prefs_is_locate_pointer_enabled()),
+                         &keys->locate_pointer_resolved_key_combo);
+}
+
+static void
+meta_x11_display_change_keygrabs (MetaX11Display *x11_display,
+                                  gboolean        grab)
+{
+  MetaKeyBindingManager *keys = &x11_display->display->key_binding_manager;
+  int i;
+
+  if (keys->overlay_resolved_key_combo.len != 0)
+    meta_change_keygrab (keys, x11_display->xroot,
+                         grab, &keys->overlay_resolved_key_combo);
+
+  maybe_update_locate_pointer_keygrab (x11_display->display, grab);
+
+  for (i = 0; i < keys->n_iso_next_group_combos; i++)
+    meta_change_keygrab (keys, x11_display->xroot,
+                         grab, &keys->iso_next_group_combo[i]);
+
+  change_binding_keygrabs (keys, x11_display->xroot,
+                           FALSE, grab);
+}
+
+static void
+change_window_keygrabs (MetaKeyBindingManager *keys,
+                        Window                 xwindow,
+                        gboolean               grab)
+{
+  change_binding_keygrabs (keys, xwindow, TRUE, grab);
+}
+
+void
+meta_window_grab_keys (MetaWindow  *window)
+{
+  MetaDisplay *display = window->display;
+  MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+  if (meta_is_wayland_compositor ())
+    return;
+  if (window->all_keys_grabbed)
+    return;
+
+  if (window->type == META_WINDOW_DOCK
+      || window->override_redirect)
+    {
+      if (window->keys_grabbed)
+        change_window_keygrabs (keys, window->xwindow, FALSE);
+      window->keys_grabbed = FALSE;
+      return;
+    }
+
+  if (window->keys_grabbed)
+    {
+      if (window->frame && !window->grab_on_frame)
+        change_window_keygrabs (keys, window->xwindow, FALSE);
+      else if (window->frame == NULL &&
+               window->grab_on_frame)
+        ; /* continue to regrab on client window */
+      else
+        return; /* already all good */
+    }
+
+  change_window_keygrabs (keys,
+                          meta_window_x11_get_toplevel_xwindow (window),
+                          TRUE);
+
+  window->keys_grabbed = TRUE;
+  window->grab_on_frame = window->frame != NULL;
+}
+
+void
+meta_window_ungrab_keys (MetaWindow  *window)
+{
+  if (!meta_is_wayland_compositor () && window->keys_grabbed)
+    {
+      MetaDisplay *display = window->display;
+      MetaKeyBindingManager *keys = &display->key_binding_manager;
+
+      if (window->grab_on_frame &&
+          window->frame != NULL)
+        change_window_keygrabs (keys, window->frame->xwindow, FALSE);
+      else if (!window->grab_on_frame)
+        change_window_keygrabs (keys, window->xwindow, FALSE);
+
+      window->keys_grabbed = FALSE;
+    }
+}
+
+void
+meta_x11_display_grab_keys (MetaX11Display *x11_display)
+{
+  if (x11_display->keys_grabbed)
+    return;
+
+  meta_x11_display_change_keygrabs (x11_display, TRUE);
+
+  x11_display->keys_grabbed = TRUE;
+}
+
+void
+meta_x11_display_ungrab_keys (MetaX11Display *x11_display)
+{
+  if (!x11_display->keys_grabbed)
+    return;
+
+  meta_x11_display_change_keygrabs (x11_display, FALSE);
+
+  x11_display->keys_grabbed = FALSE;
+}
+
+void
+meta_x11_display_grab_key_bindings (MetaDisplay *display)
+{
+  GSList *windows, *l;
+
+  if (display->x11_display)
+    meta_x11_display_grab_keys (display->x11_display);
+
+  windows = meta_display_list_windows (display, META_LIST_DEFAULT);
+  for (l = windows; l; l = l->next)
+    {
+      MetaWindow *w = l->data;
+      meta_window_grab_keys (w);
+    }
+
+  g_slist_free (windows);
+}
+
+void
+meta_x11_display_ungrab_key_bindings (MetaDisplay *display)
+{
+  GSList *windows, *l;
+
+  if (display->x11_display)
+    meta_x11_display_ungrab_keys (display->x11_display);
+
+  windows = meta_display_list_windows (display, META_LIST_DEFAULT);
+  for (l = windows; l; l = l->next)
+    {
+      MetaWindow *w = l->data;
+      meta_window_ungrab_keys (w);
+    }
+
+  g_slist_free (windows);
+}
diff --git a/src/x11/meta-x11-display-private.h b/src/x11/meta-x11-display-private.h
index 9158387d69..ff52774892 100644
--- a/src/x11/meta-x11-display-private.h
+++ b/src/x11/meta-x11-display-private.h
@@ -253,4 +253,14 @@ MetaDisplay * meta_x11_display_get_display (MetaX11Display *x11_display);
 
 const gchar * meta_x11_get_display_name (void);
 
+
+void meta_display_grab_window_buttons        (MetaDisplay *display,
+                                              Window       xwindow);
+void meta_display_ungrab_window_buttons      (MetaDisplay *display,
+                                              Window       xwindow);
+void meta_display_grab_focus_window_button   (MetaDisplay *display,
+                                              MetaWindow  *window);
+void meta_display_ungrab_focus_window_button (MetaDisplay *display,
+                                              MetaWindow  *window);
+
 #endif /* META_X11_DISPLAY_PRIVATE_H */
diff --git a/src/x11/meta-x11-display.c b/src/x11/meta-x11-display.c
index fdd4b80104..80c7e63cec 100644
--- a/src/x11/meta-x11-display.c
+++ b/src/x11/meta-x11-display.c
@@ -63,6 +63,7 @@
 
 #include "x11/events.h"
 #include "x11/group-props.h"
+#include "x11/keybindings-x11-private.h"
 #include "x11/meta-x11-selection-private.h"
 #include "x11/window-props.h"
 #include "x11/xprops.h"
diff --git a/src/x11/window-x11.c b/src/x11/window-x11.c
index 617a1dfaa0..afb6ca3c24 100644
--- a/src/x11/window-x11.c
+++ b/src/x11/window-x11.c
@@ -47,6 +47,7 @@
 #include "meta/meta-later.h"
 #include "meta/meta-x11-errors.h"
 #include "meta/prefs.h"
+#include "x11/keybindings-x11-private.h"
 #include "x11/meta-x11-display-private.h"
 #include "x11/session.h"
 #include "x11/window-props.h"