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diff --git a/src/core/display-private.h b/src/core/display-private.h
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+/* Marco X display handler */
+
+/* 
+ * Copyright (C) 2001 Havoc Pennington
+ * Copyright (C) 2002 Red Hat, Inc.
+ * Copyright (C) 2003 Rob Adams
+ * Copyright (C) 2004-2006 Elijah Newren
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_DISPLAY_PRIVATE_H
+#define META_DISPLAY_PRIVATE_H
+
+#ifndef PACKAGE
+ #error "config.h not included"
+#endif
+
+#include <glib.h>
+#include <X11/Xlib.h>
+#include "eventqueue.h"
+#include "common.h"
+#include "boxes.h"
+#include "display.h"
+
+#ifdef HAVE_STARTUP_NOTIFICATION
+ #include <libsn/sn.h>
+#endif
+
+#ifdef HAVE_XSYNC
+ #include <X11/extensions/sync.h>
+#endif
+
+typedef struct _MetaKeyBinding MetaKeyBinding;
+typedef struct _MetaStack MetaStack;
+typedef struct _MetaUISlave MetaUISlave;
+typedef struct _MetaWorkspace MetaWorkspace;
+
+typedef struct _MetaGroupPropHooks MetaGroupPropHooks;
+
+typedef struct MetaEdgeResistanceData MetaEdgeResistanceData;
+
+typedef void (*MetaWindowPingFunc) (MetaDisplay* display, Window xwindow, guint32 timestamp, gpointer user_data);
+
+
+#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
+#define _NET_WM_STATE_ADD 1 /* add/set property */
+#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
+
+/* This is basically a bogus number, just has to be large enough
+ * to handle the expected case of the alt+tab operation, where
+ * we want to ignore serials from UnmapNotify on the tab popup,
+ * and the LeaveNotify/EnterNotify from the pointer ungrab
+ */
+#define N_IGNORED_SERIALS 4
+
+struct _MetaDisplay {
+ char* name;
+ Display* xdisplay;
+
+ Window leader_window;
+ Window timestamp_pinging_window;
+
+ /* Pull in all the names of atoms as fields; we will intern them when the
+ * class is constructed.
+ */
+ #define item(x) Atom atom_##x;
+ #include "atomnames.h"
+ #undef item
+
+ /* This is the actual window from focus events,
+ * not the one we last set
+ */
+ MetaWindow* focus_window;
+
+ /* window we are expecting a FocusIn event for or the current focus
+ * window if we are not expecting any FocusIn/FocusOut events; not
+ * perfect because applications can call XSetInputFocus directly.
+ * (It could also be messed up if a timestamp later than current
+ * time is sent to meta_display_set_input_focus_window, though that
+ * would be a programming error). See bug 154598 for more info.
+ */
+ MetaWindow* expected_focus_window;
+
+ /* last timestamp passed to XSetInputFocus */
+ guint32 last_focus_time;
+
+ /* last user interaction time in any app */
+ guint32 last_user_time;
+
+ /* whether we're using mousenav (only relevant for sloppy&mouse focus modes;
+ * !mouse_mode means "keynav mode")
+ */
+ guint mouse_mode: 1;
+
+ /* Helper var used when focus_new_windows setting is 'strict'; only
+ * relevant in 'strict' mode and if the focus window is a terminal.
+ * In that case, we don't allow new windows to take focus away from
+ * a terminal, but if the user explicitly did something that should
+ * allow a different window to gain focus (e.g. global keybinding or
+ * clicking on a dock), then we will allow the transfer.
+ */
+ guint allow_terminal_deactivation: 1;
+
+ guint static_gravity_works: 1;
+
+ /*< private-ish >*/
+ guint error_trap_synced_at_last_pop: 1;
+ MetaEventQueue* events;
+ GSList* screens;
+ MetaScreen* active_screen;
+ GHashTable* window_ids;
+ int error_traps;
+ int (*error_trap_handler) (Display* display, XErrorEvent* error); 
+ int server_grab_count;
+
+ /* serials of leave/unmap events that may
+ * correspond to an enter event we should
+ * ignore
+ */
+ unsigned long ignored_serials[N_IGNORED_SERIALS];
+ Window ungrab_should_not_cause_focus_window;
+ 
+ guint32 current_time;
+
+ /* Pings which we're waiting for a reply from */
+ GSList* pending_pings;
+
+ /* Pending autoraise */
+ guint autoraise_timeout_id;
+ MetaWindow* autoraise_window;
+
+ /* Alt+click button grabs */
+ unsigned int window_grab_modifiers;
+
+ /* current window operation */
+ MetaGrabOp grab_op;
+ MetaScreen* grab_screen;
+ MetaWindow* grab_window;
+ Window grab_xwindow;
+ int grab_button;
+ int grab_anchor_root_x;
+ int grab_anchor_root_y;
+ MetaRectangle grab_anchor_window_pos;
+ int grab_latest_motion_x;
+ int grab_latest_motion_y;
+ gulong grab_mask;
+ guint grab_have_pointer : 1;
+ guint grab_have_keyboard : 1;
+ guint grab_wireframe_active : 1;
+ guint grab_was_cancelled : 1; /* Only used in wireframe mode */
+ guint grab_frame_action : 1;
+ MetaRectangle grab_wireframe_rect;
+ MetaRectangle grab_wireframe_last_xor_rect;
+ MetaRectangle grab_initial_window_pos;
+ int grab_initial_x, grab_initial_y; /* These are only relevant for */
+ gboolean grab_threshold_movement_reached; /* raise_on_click == FALSE. */
+ MetaResizePopup* grab_resize_popup;
+ GTimeVal grab_last_moveresize_time;
+ guint32 grab_motion_notify_time;
+ int grab_wireframe_last_display_width;
+ int grab_wireframe_last_display_height;
+ GList* grab_old_window_stacking;
+ MetaEdgeResistanceData* grab_edge_resistance_data;
+ unsigned int grab_last_user_action_was_snap;
+
+ /* we use property updates as sentinels for certain window focus events
+ * to avoid some race conditions on EnterNotify events
+ */
+ int sentinel_counter;
+
+ #ifdef HAVE_XKB
+ int xkb_base_event_type;
+ guint32 last_bell_time;
+ #endif
+ 
+ #ifdef HAVE_XSYNC
+ /* alarm monitoring client's _NET_WM_SYNC_REQUEST_COUNTER */
+ XSyncAlarm grab_sync_request_alarm;
+ #endif
+ 
+ int grab_resize_timeout_id;
+
+ /* Keybindings stuff */
+ MetaKeyBinding* key_bindings;
+ int n_key_bindings;
+ int min_keycode;
+ int max_keycode;
+ KeySym* keymap;
+ int keysyms_per_keycode;
+ XModifierKeymap* modmap;
+ unsigned int ignored_modifier_mask;
+ unsigned int num_lock_mask;
+ unsigned int scroll_lock_mask;
+ unsigned int hyper_mask;
+ unsigned int super_mask;
+ unsigned int meta_mask;
+
+ /* Xinerama cache */
+ unsigned int xinerama_cache_invalidated: 1;
+
+ /* Opening the display */
+ unsigned int display_opening: 1;
+
+ /* Closing down the display */
+ int closing;
+
+ /* To detect double clicks
+ *
+ * https://github.com/stefano-k/Mate-Desktop-Environment/commit/b0e5fb03eb21dae8f02692f11ef391bfc5ccba33
+ */
+ guint button_click_number;
+ Window button_click_window;
+ int button_click_x;
+ int button_click_y;
+ guint32 button_click_time;
+
+ /* Managed by group.c */
+ GHashTable* groups_by_leader;
+
+ /* currently-active window menu if any */
+ MetaWindowMenu* window_menu;
+ MetaWindow* window_with_menu;
+
+ /* Managed by window-props.c */
+ gpointer* prop_hooks_table;
+ GHashTable* prop_hooks;
+
+ /* Managed by group-props.c */
+ MetaGroupPropHooks* group_prop_hooks;
+
+ /* Managed by compositor.c */
+ MetaCompositor* compositor;
+ 
+ #ifdef HAVE_STARTUP_NOTIFICATION
+ SnDisplay* sn_display;
+ #endif
+ 
+ #ifdef HAVE_XSYNC
+ int xsync_event_base;
+ int xsync_error_base;
+ #endif
+ 
+ #ifdef HAVE_SHAPE
+ int shape_event_base;
+ int shape_error_base;
+ #endif
+ 
+ #ifdef HAVE_RENDER
+ int render_event_base;
+ int render_error_base;
+ #endif
+ 
+ #ifdef HAVE_COMPOSITE_EXTENSIONS
+ int composite_event_base;
+ int composite_error_base;
+ int composite_major_version;
+ int composite_minor_version;
+ int damage_event_base;
+ int damage_error_base;
+ int xfixes_event_base;
+ int xfixes_error_base;
+ #endif
+ 
+ #ifdef HAVE_XSYNC
+ unsigned int have_xsync : 1;
+ #define META_DISPLAY_HAS_XSYNC(display) ((display)->have_xsync)
+ #else
+ #define META_DISPLAY_HAS_XSYNC(display) FALSE
+ #endif
+ 
+ #ifdef HAVE_SHAPE
+ unsigned int have_shape : 1;
+ #define META_DISPLAY_HAS_SHAPE(display) ((display)->have_shape)
+ #else
+ #define META_DISPLAY_HAS_SHAPE(display) FALSE
+ #endif
+ 
+ #ifdef HAVE_RENDER
+ unsigned int have_render : 1;
+ #define META_DISPLAY_HAS_RENDER(display) ((display)->have_render)
+ #else
+ #define META_DISPLAY_HAS_RENDER(display) FALSE
+ #endif
+ 
+ #ifdef HAVE_COMPOSITE_EXTENSIONS
+ unsigned int have_composite : 1;
+ unsigned int have_damage : 1;
+ unsigned int have_xfixes : 1;
+ #define META_DISPLAY_HAS_COMPOSITE(display) ((display)->have_composite)
+ #define META_DISPLAY_HAS_DAMAGE(display) ((display)->have_damage)
+ #define META_DISPLAY_HAS_XFIXES(display) ((display)->have_xfixes)
+ #else
+ #define META_DISPLAY_HAS_COMPOSITE(display) FALSE
+ #define META_DISPLAY_HAS_DAMAGE(display) FALSE
+ #define META_DISPLAY_HAS_XFIXES(display) FALSE
+ #endif
+};
+
+/* Xserver time can wraparound, thus comparing two timestamps needs to take
+ * this into account. Here's a little macro to help out. If no wraparound
+ * has occurred, this is equivalent to
+ * time1 < time2
+ * Of course, the rest of the ugliness of this macro comes from accounting
+ * for the fact that wraparound can occur and the fact that a timestamp of
+ * 0 must be special-cased since it means older than anything else. 
+ *
+ * Note that this is NOT an equivalent for time1 <= time2; if that's what
+ * you need then you'll need to swap the order of the arguments and negate
+ * the result.
+ */
+#define XSERVER_TIME_IS_BEFORE_ASSUMING_REAL_TIMESTAMPS(time1, time2) \
+ ( (( (time1) < (time2) ) && ( (time2) - (time1) < ((guint32)-1)/2 )) || \
+ (( (time1) > (time2) ) && ( (time1) - (time2) > ((guint32)-1)/2 )) \
+ )
+#define XSERVER_TIME_IS_BEFORE(time1, time2) \
+ ( (time1) == 0 || \
+ (XSERVER_TIME_IS_BEFORE_ASSUMING_REAL_TIMESTAMPS(time1, time2) && \
+ (time2) != 0) \
+ )
+
+gboolean meta_display_open (void);
+void meta_display_close (MetaDisplay *display,
+ guint32 timestamp);
+MetaScreen* meta_display_screen_for_x_screen (MetaDisplay *display,
+ Screen *screen);
+MetaScreen* meta_display_screen_for_xwindow (MetaDisplay *display,
+ Window xindow);
+void meta_display_grab (MetaDisplay *display);
+void meta_display_ungrab (MetaDisplay *display);
+
+void meta_display_unmanage_screen (MetaDisplay **display,
+ MetaScreen *screen,
+ guint32 timestamp);
+
+void meta_display_unmanage_windows_for_screen (MetaDisplay *display,
+ MetaScreen *screen,
+ guint32 timestamp);
+
+/* Utility function to compare the stacking of two windows */
+int meta_display_stack_cmp (const void *a,
+ const void *b);
+
+/* A given MetaWindow may have various X windows that "belong"
+ * to it, such as the frame window.
+ */
+MetaWindow* meta_display_lookup_x_window (MetaDisplay *display,
+ Window xwindow);
+void meta_display_register_x_window (MetaDisplay *display,
+ Window *xwindowp,
+ MetaWindow *window);
+void meta_display_unregister_x_window (MetaDisplay *display,
+ Window xwindow);
+/* Return whether the xwindow is a no focus window for any of the screens */
+gboolean meta_display_xwindow_is_a_no_focus_window (MetaDisplay *display,
+ Window xwindow);
+
+GSList* meta_display_list_windows (MetaDisplay *display);
+
+MetaDisplay* meta_display_for_x_display (Display *xdisplay);
+MetaDisplay* meta_get_display (void);
+
+Cursor meta_display_create_x_cursor (MetaDisplay *display,
+ MetaCursor cursor);
+
+void meta_display_set_grab_op_cursor (MetaDisplay *display,
+ MetaScreen *screen,
+ MetaGrabOp op,
+ gboolean change_pointer,
+ Window grab_xwindow,
+ guint32 timestamp);
+
+gboolean meta_display_begin_grab_op (MetaDisplay *display,
+ MetaScreen *screen,
+ MetaWindow *window,
+ MetaGrabOp op,
+ gboolean pointer_already_grabbed,
+ gboolean frame_action,
+ int button,
+ gulong modmask,
+ guint32 timestamp,
+ int root_x,
+ int root_y);
+void meta_display_end_grab_op (MetaDisplay *display,
+ guint32 timestamp);
+
+void meta_display_check_threshold_reached (MetaDisplay *display,
+ int x,
+ int y);
+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);
+
+/* Next two functions are defined in edge-resistance.c */
+void meta_display_compute_resistance_and_snapping_edges (MetaDisplay *display);
+void meta_display_cleanup_edges (MetaDisplay *display);
+
+/* make a request to ensure the event serial has changed */
+void meta_display_increment_event_serial (MetaDisplay *display);
+
+void meta_display_update_active_window_hint (MetaDisplay *display);
+
+guint32 meta_display_get_current_time (MetaDisplay *display);
+guint32 meta_display_get_current_time_roundtrip (MetaDisplay *display);
+
+/* utility goo */
+const char* meta_event_mode_to_string (int m);
+const char* meta_event_detail_to_string (int d);
+
+void meta_display_queue_retheme_all_windows (MetaDisplay *display);
+void meta_display_retheme_all (void);
+
+void meta_display_set_cursor_theme (const char *theme, 
+ int size);
+
+void meta_display_ping_window (MetaDisplay *display,
+ MetaWindow *window,
+ guint32 timestamp,
+ MetaWindowPingFunc ping_reply_func,
+ MetaWindowPingFunc ping_timeout_func,
+ void *user_data);
+gboolean meta_display_window_has_pending_pings (MetaDisplay *display,
+ MetaWindow *window);
+
+typedef enum
+{
+ META_TAB_LIST_NORMAL,
+ META_TAB_LIST_DOCKS,
+ META_TAB_LIST_GROUP
+} MetaTabList;
+
+typedef enum
+{
+ META_TAB_SHOW_ICON, /* Alt-Tab mode */
+ META_TAB_SHOW_INSTANTLY /* Alt-Esc mode */
+} MetaTabShowType;
+
+GList* meta_display_get_tab_list (MetaDisplay *display,
+ MetaTabList type,
+ MetaScreen *screen,
+ MetaWorkspace *workspace);
+
+MetaWindow* meta_display_get_tab_next (MetaDisplay *display,
+ MetaTabList type,
+ MetaScreen *screen,
+ MetaWorkspace *workspace,
+ MetaWindow *window,
+ gboolean backward);
+
+MetaWindow* meta_display_get_tab_current (MetaDisplay *display,
+ MetaTabList type,
+ MetaScreen *screen,
+ MetaWorkspace *workspace);
+
+int meta_resize_gravity_from_grab_op (MetaGrabOp op);
+
+gboolean meta_grab_op_is_moving (MetaGrabOp op);
+gboolean meta_grab_op_is_resizing (MetaGrabOp op);
+
+void meta_display_devirtualize_modifiers (MetaDisplay *display,
+ MetaVirtualModifier modifiers,
+ unsigned int *mask);
+
+void meta_display_increment_focus_sentinel (MetaDisplay *display);
+void meta_display_decrement_focus_sentinel (MetaDisplay *display);
+gboolean meta_display_focus_sentinel_clear (MetaDisplay *display);
+
+/* meta_display_set_input_focus_window is like XSetInputFocus, except
+ * that (a) it can't detect timestamps later than the current time,
+ * since Marco isn't part of the XServer, and thus gives erroneous
+ * behavior in this circumstance (so don't do it), (b) it uses
+ * display->last_focus_time since we don't have access to the true
+ * Xserver one, (c) it makes use of display->user_time since checking
+ * whether a window should be allowed to be focused should depend
+ * on user_time events (see bug 167358, comment 15 in particular)
+ */
+void meta_display_set_input_focus_window (MetaDisplay *display, 
+ MetaWindow *window,
+ gboolean focus_frame,
+ guint32 timestamp);
+
+/* meta_display_focus_the_no_focus_window is called when the
+ * designated no_focus_window should be focused, but is otherwise the
+ * same as meta_display_set_input_focus_window
+ */
+void meta_display_focus_the_no_focus_window (MetaDisplay *display, 
+ MetaScreen *screen,
+ guint32 timestamp);
+
+void meta_display_queue_autoraise_callback (MetaDisplay *display,
+ MetaWindow *window);
+void meta_display_remove_autoraise_callback (MetaDisplay *display);
+
+#endif /* META_DISPLAY_PRIVATE_H */