mutter/src/keybindings.c

/* Metacity Keybindings */

/* 
 * Copyright (C) 2001 Havoc Pennington
 * Copyright (C) 2002 Red Hat Inc.
 * Copyright (C) 2003 Rob Adams
 * 
 * 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.
 */

#include <config.h>
#include "keybindings.h"
#include "workspace.h"
#include "errors.h"
#include "ui.h"
#include "frame.h"
#include "place.h"
#include "prefs.h"
#include "effects.h"

#include <X11/keysym.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#ifdef HAVE_XKB
#include <X11/XKBlib.h>
#endif

static gboolean all_bindings_disabled = FALSE;

typedef void (* MetaKeyHandlerFunc) (MetaDisplay    *display,
                                     MetaScreen     *screen,
                                     MetaWindow     *window,
                                     XEvent         *event,
                                     MetaKeyBinding *binding);

static void handle_activate_workspace (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_activate_menu      (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_tab_forward        (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_tab_backward       (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_cycle_forward      (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_cycle_backward     (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_toggle_fullscreen  (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_toggle_desktop     (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_panel_keybinding   (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_toggle_above       (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_toggle_maximize    (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_maximize           (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_unmaximize         (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_toggle_shade       (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_close_window       (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_minimize_window    (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_begin_move         (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_begin_resize       (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_toggle_sticky      (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_move_to_workspace  (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_move_to_workspace_flip  (MetaDisplay    *display,
                                            MetaScreen     *screen,
                                            MetaWindow     *window,
                                            XEvent         *event,
                                            MetaKeyBinding *binding);
static void handle_workspace_switch   (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_raise_or_lower     (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_raise              (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_lower              (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_run_command        (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_maximize_vert      (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_maximize_horiz     (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);
static void handle_run_terminal       (MetaDisplay    *display,
                                       MetaScreen     *screen,
                                       MetaWindow     *window,
                                       XEvent         *event,
                                       MetaKeyBinding *binding);

/* debug */
static gboolean process_keyboard_move_grab (MetaDisplay *display,
                                            MetaScreen  *screen,
                                            MetaWindow  *window,
                                            XEvent      *event,
                                            KeySym       keysym);

static gboolean process_keyboard_resize_grab (MetaDisplay *display,
                                              MetaScreen  *screen,
                                              MetaWindow  *window,
                                              XEvent      *event,
                                              KeySym       keysym);

static gboolean process_tab_grab           (MetaDisplay *display,
                                            MetaScreen  *screen,
                                            XEvent      *event,
                                            KeySym       keysym);

static gboolean process_workspace_switch_grab (MetaDisplay *display,
                                               MetaScreen  *screen,
                                               XEvent      *event,
                                               KeySym       keysym);

static void regrab_screen_bindings         (MetaDisplay *display);
static void regrab_window_bindings         (MetaDisplay *display);

typedef struct
{
  const char *name;
  MetaKeyHandlerFunc func;
  void *data;
} MetaKeyHandler;

struct _MetaKeyBinding
{
  const char *name;
  KeySym keysym;
  unsigned int mask;
  unsigned int keycode;
  MetaVirtualModifier modifiers;
  const MetaKeyHandler *handler;
};

static const MetaKeyHandler screen_handlers[] = {
  { META_KEYBINDING_WORKSPACE_1, handle_activate_workspace,
    GINT_TO_POINTER (0) },
  { META_KEYBINDING_WORKSPACE_2, handle_activate_workspace,
    GINT_TO_POINTER (1) },
  { META_KEYBINDING_WORKSPACE_3, handle_activate_workspace,
    GINT_TO_POINTER (2) },
  { META_KEYBINDING_WORKSPACE_4, handle_activate_workspace,
    GINT_TO_POINTER (3) },
  { META_KEYBINDING_WORKSPACE_5, handle_activate_workspace,
    GINT_TO_POINTER (4) },
  { META_KEYBINDING_WORKSPACE_6, handle_activate_workspace,
    GINT_TO_POINTER (5) },
  { META_KEYBINDING_WORKSPACE_7, handle_activate_workspace,
    GINT_TO_POINTER (6) },
  { META_KEYBINDING_WORKSPACE_8, handle_activate_workspace,
    GINT_TO_POINTER (7) },
  { META_KEYBINDING_WORKSPACE_9, handle_activate_workspace,
    GINT_TO_POINTER (8) },
  { META_KEYBINDING_WORKSPACE_10, handle_activate_workspace,
    GINT_TO_POINTER (9) },
  { META_KEYBINDING_WORKSPACE_11, handle_activate_workspace,
    GINT_TO_POINTER (10) },
  { META_KEYBINDING_WORKSPACE_12, handle_activate_workspace,
    GINT_TO_POINTER (11) },
  { META_KEYBINDING_WORKSPACE_LEFT, handle_workspace_switch,
    GINT_TO_POINTER (META_MOTION_LEFT) },
  { META_KEYBINDING_WORKSPACE_RIGHT, handle_workspace_switch,
    GINT_TO_POINTER (META_MOTION_RIGHT) },
  { META_KEYBINDING_WORKSPACE_UP, handle_workspace_switch,
    GINT_TO_POINTER (META_MOTION_UP) },
  { META_KEYBINDING_WORKSPACE_DOWN, handle_workspace_switch,
    GINT_TO_POINTER (META_MOTION_DOWN) },
  { META_KEYBINDING_SWITCH_WINDOWS, handle_tab_forward,
    GINT_TO_POINTER (META_TAB_LIST_NORMAL) },
  { META_KEYBINDING_SWITCH_WINDOWS_BACKWARD, handle_tab_backward,
    GINT_TO_POINTER (META_TAB_LIST_NORMAL) },
  { META_KEYBINDING_SWITCH_PANELS, handle_tab_forward,
    GINT_TO_POINTER (META_TAB_LIST_DOCKS) },
  { META_KEYBINDING_SWITCH_PANELS_BACKWARD, handle_tab_backward,
    GINT_TO_POINTER (META_TAB_LIST_DOCKS) },
  { META_KEYBINDING_CYCLE_WINDOWS, handle_cycle_forward,
    GINT_TO_POINTER (META_TAB_LIST_NORMAL) },
  { META_KEYBINDING_CYCLE_WINDOWS_BACKWARD, handle_cycle_backward,
    GINT_TO_POINTER (META_TAB_LIST_NORMAL) },
  { META_KEYBINDING_CYCLE_PANELS, handle_cycle_forward,
    GINT_TO_POINTER (META_TAB_LIST_DOCKS) },  
  { META_KEYBINDING_CYCLE_PANELS_BACKWARD, handle_cycle_backward,
    GINT_TO_POINTER (META_TAB_LIST_DOCKS) },  
  { META_KEYBINDING_SHOW_DESKTOP, handle_toggle_desktop,
    NULL },
  { META_KEYBINDING_PANEL_MAIN_MENU, handle_panel_keybinding,
    GINT_TO_POINTER (META_KEYBINDING_ACTION_PANEL_MAIN_MENU) },
  { META_KEYBINDING_PANEL_RUN_DIALOG, handle_panel_keybinding,
    GINT_TO_POINTER (META_KEYBINDING_ACTION_PANEL_RUN_DIALOG) },
  { META_KEYBINDING_COMMAND_1, handle_run_command,
    GINT_TO_POINTER (0) },
  { META_KEYBINDING_COMMAND_2, handle_run_command,
    GINT_TO_POINTER (1) },
  { META_KEYBINDING_COMMAND_3, handle_run_command,
    GINT_TO_POINTER (2) },
  { META_KEYBINDING_COMMAND_4, handle_run_command,
    GINT_TO_POINTER (3) },
  { META_KEYBINDING_COMMAND_5, handle_run_command,
    GINT_TO_POINTER (4) },
  { META_KEYBINDING_COMMAND_6, handle_run_command,
    GINT_TO_POINTER (5) },
  { META_KEYBINDING_COMMAND_7, handle_run_command,
    GINT_TO_POINTER (6) },
  { META_KEYBINDING_COMMAND_8, handle_run_command,
    GINT_TO_POINTER (7) },
  { META_KEYBINDING_COMMAND_9, handle_run_command,
    GINT_TO_POINTER (8) },
  { META_KEYBINDING_COMMAND_10, handle_run_command,
    GINT_TO_POINTER (9) },
  { META_KEYBINDING_COMMAND_11, handle_run_command,
    GINT_TO_POINTER (10) },
  { META_KEYBINDING_COMMAND_12, handle_run_command,
    GINT_TO_POINTER (11) },
  { META_KEYBINDING_COMMAND_13, handle_run_command,
    GINT_TO_POINTER (12) },
  { META_KEYBINDING_COMMAND_14, handle_run_command,
    GINT_TO_POINTER (13) },
  { META_KEYBINDING_COMMAND_15, handle_run_command,
    GINT_TO_POINTER (14) },
  { META_KEYBINDING_COMMAND_16, handle_run_command,
    GINT_TO_POINTER (15) },
  { META_KEYBINDING_COMMAND_17, handle_run_command,
    GINT_TO_POINTER (16) },
  { META_KEYBINDING_COMMAND_18, handle_run_command,
    GINT_TO_POINTER (17) },
  { META_KEYBINDING_COMMAND_19, handle_run_command,
    GINT_TO_POINTER (18) },
  { META_KEYBINDING_COMMAND_20, handle_run_command,
    GINT_TO_POINTER (19) },
  { META_KEYBINDING_COMMAND_21, handle_run_command,
    GINT_TO_POINTER (20) },
  { META_KEYBINDING_COMMAND_22, handle_run_command,
    GINT_TO_POINTER (21) },
  { META_KEYBINDING_COMMAND_23, handle_run_command,
    GINT_TO_POINTER (22) },
  { META_KEYBINDING_COMMAND_24, handle_run_command,
    GINT_TO_POINTER (23) },
  { META_KEYBINDING_COMMAND_25, handle_run_command,
    GINT_TO_POINTER (24) },
  { META_KEYBINDING_COMMAND_26, handle_run_command,
    GINT_TO_POINTER (25) },
  { META_KEYBINDING_COMMAND_27, handle_run_command,
    GINT_TO_POINTER (26) },
  { META_KEYBINDING_COMMAND_28, handle_run_command,
    GINT_TO_POINTER (27) },
  { META_KEYBINDING_COMMAND_29, handle_run_command,
    GINT_TO_POINTER (28) },
  { META_KEYBINDING_COMMAND_30, handle_run_command,
    GINT_TO_POINTER (29) },
  { META_KEYBINDING_COMMAND_31, handle_run_command,
    GINT_TO_POINTER (30) },
  { META_KEYBINDING_COMMAND_32, handle_run_command,
    GINT_TO_POINTER (31) },
  { META_KEYBINDING_COMMAND_SCREENSHOT, handle_run_command,
    GINT_TO_POINTER (32) },
  { META_KEYBINDING_COMMAND_WIN_SCREENSHOT, handle_run_command,
    GINT_TO_POINTER (33) },
  { META_KEYBINDING_RUN_COMMAND_TERMINAL, handle_run_terminal,
    NULL },
  { NULL, NULL, NULL }
};
  
static const MetaKeyHandler window_handlers[] = {
  { META_KEYBINDING_WINDOW_MENU, handle_activate_menu, NULL },
  { META_KEYBINDING_TOGGLE_FULLSCREEN, handle_toggle_fullscreen, NULL },
  { META_KEYBINDING_TOGGLE_ABOVE, handle_toggle_above, NULL },
  { META_KEYBINDING_TOGGLE_MAXIMIZE, handle_toggle_maximize, NULL },
  { META_KEYBINDING_MAXIMIZE, handle_maximize, NULL },
  { META_KEYBINDING_UNMAXIMIZE, handle_unmaximize, NULL },
  { META_KEYBINDING_TOGGLE_SHADE, handle_toggle_shade, NULL },
  { META_KEYBINDING_CLOSE, handle_close_window, NULL },
  { META_KEYBINDING_MINIMIZE, handle_minimize_window, NULL },
  { META_KEYBINDING_BEGIN_MOVE, handle_begin_move, },
  { META_KEYBINDING_BEGIN_RESIZE, handle_begin_resize, },
  { META_KEYBINDING_TOGGLE_STICKY, handle_toggle_sticky, },
  { META_KEYBINDING_MOVE_WORKSPACE_1, handle_move_to_workspace,
    GINT_TO_POINTER (0) },
  { META_KEYBINDING_MOVE_WORKSPACE_2, handle_move_to_workspace,
    GINT_TO_POINTER (1) },
  { META_KEYBINDING_MOVE_WORKSPACE_3, handle_move_to_workspace,
    GINT_TO_POINTER (2) },
  { META_KEYBINDING_MOVE_WORKSPACE_4, handle_move_to_workspace,
    GINT_TO_POINTER (3) },
  { META_KEYBINDING_MOVE_WORKSPACE_5, handle_move_to_workspace,
    GINT_TO_POINTER (4) },
  { META_KEYBINDING_MOVE_WORKSPACE_6, handle_move_to_workspace,
    GINT_TO_POINTER (5) },
  { META_KEYBINDING_MOVE_WORKSPACE_7, handle_move_to_workspace,
    GINT_TO_POINTER (6) },
  { META_KEYBINDING_MOVE_WORKSPACE_8, handle_move_to_workspace,
    GINT_TO_POINTER (7) },
  { META_KEYBINDING_MOVE_WORKSPACE_9, handle_move_to_workspace,
    GINT_TO_POINTER (8) },
  { META_KEYBINDING_MOVE_WORKSPACE_10, handle_move_to_workspace,
    GINT_TO_POINTER (9) },
  { META_KEYBINDING_MOVE_WORKSPACE_11, handle_move_to_workspace,
    GINT_TO_POINTER (10) },
  { META_KEYBINDING_MOVE_WORKSPACE_12, handle_move_to_workspace,
    GINT_TO_POINTER (11) },
  { META_KEYBINDING_MOVE_WORKSPACE_LEFT, handle_move_to_workspace_flip,
    GINT_TO_POINTER (META_MOTION_LEFT) },
  { META_KEYBINDING_MOVE_WORKSPACE_RIGHT, handle_move_to_workspace_flip,
    GINT_TO_POINTER (META_MOTION_RIGHT) },
  { META_KEYBINDING_MOVE_WORKSPACE_UP, handle_move_to_workspace_flip,
    GINT_TO_POINTER (META_MOTION_UP) },
  { META_KEYBINDING_MOVE_WORKSPACE_DOWN, handle_move_to_workspace_flip,
    GINT_TO_POINTER (META_MOTION_DOWN) },
  { META_KEYBINDING_RAISE_OR_LOWER, handle_raise_or_lower, NULL},
  { META_KEYBINDING_RAISE, handle_raise, NULL},
  { META_KEYBINDING_LOWER, handle_lower, NULL},
  { META_KEYBINDING_MAXIMIZE_VERTICALLY, handle_maximize_vert, NULL },
  { META_KEYBINDING_MAXIMIZE_HORIZONTALLY, handle_maximize_horiz, NULL },
  { NULL, NULL, NULL }
};

static void
reload_keymap (MetaDisplay *display)
{
  if (display->keymap)
    meta_XFree (display->keymap);

  display->keymap = XGetKeyboardMapping (display->xdisplay,
                                         display->min_keycode,
                                         display->max_keycode -
                                         display->min_keycode + 1,
                                         &display->keysyms_per_keycode);  
}

static void
reload_modmap (MetaDisplay *display)
{
  XModifierKeymap *modmap;
  int map_size;
  int i;
  
  if (display->modmap)
    XFreeModifiermap (display->modmap);

  modmap = XGetModifierMapping (display->xdisplay);
  display->modmap = modmap;

  display->ignored_modifier_mask = 0;

  /* Multiple bits may get set in each of these */
  display->num_lock_mask = 0;
  display->scroll_lock_mask = 0;
  display->meta_mask = 0;
  display->hyper_mask = 0;
  display->super_mask = 0;
  
  /* there are 8 modifiers, and the first 3 are shift, shift lock,
   * and control
   */
  map_size = 8 * modmap->max_keypermod;
  i = 3 * modmap->max_keypermod;
  while (i < map_size)
    {
      /* get the key code at this point in the map,
       * see if its keysym is one we're interested in
       */
      unsigned int keycode = modmap->modifiermap[i];
      
      if (keycode >= display->min_keycode &&
          keycode <= display->max_keycode)
        {
          int j = 0;
          KeySym *syms = display->keymap +
            (keycode - display->min_keycode) * display->keysyms_per_keycode;

          while (j < display->keysyms_per_keycode)
            {
              if (syms[j] != 0)
                {
                  const char *str;
                  
                  str = XKeysymToString (syms[j]);
                  meta_topic (META_DEBUG_KEYBINDINGS,
                              "Keysym %s bound to modifier 0x%x\n",
                              str ? str : "none",
                              (1 << ( i / modmap->max_keypermod)));
                }
              
              if (syms[j] == XK_Num_Lock)
                {
                  /* Mod1Mask is 1 << 3 for example, i.e. the
                   * fourth modifier, i / keyspermod is the modifier
                   * index
                   */
                  
                  display->num_lock_mask |= (1 << ( i / modmap->max_keypermod));
                }
              else if (syms[j] == XK_Scroll_Lock)
                {
                  display->scroll_lock_mask |= (1 << ( i / modmap->max_keypermod));
                }
              else if (syms[j] == XK_Super_L ||
                       syms[j] == XK_Super_R)
                {
                  display->super_mask |= (1 << ( i / modmap->max_keypermod));
                }
              else if (syms[j] == XK_Hyper_L ||
                       syms[j] == XK_Hyper_R)
                {
                  display->hyper_mask |= (1 << ( i / modmap->max_keypermod));
                }              
              else if (syms[j] == XK_Meta_L ||
                       syms[j] == XK_Meta_R)
                {
                  display->meta_mask |= (1 << ( i / modmap->max_keypermod));
                }
              
              ++j;
            }
        }
      
      ++i;
    }

  display->ignored_modifier_mask = (display->num_lock_mask |
                                    display->scroll_lock_mask |
                                    LockMask);

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Ignoring modmask 0x%x num lock 0x%x scroll lock 0x%x hyper 0x%x super 0x%x meta 0x%x\n",
              display->ignored_modifier_mask,
              display->num_lock_mask,
              display->scroll_lock_mask,
              display->hyper_mask,
              display->super_mask,
              display->meta_mask);
}

static void
reload_keycodes (MetaDisplay *display)
{
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Reloading keycodes for binding tables\n");
  
  if (display->screen_bindings)
    {
      int i;
      
      i = 0;
      while (i < display->n_screen_bindings)
        {
          display->screen_bindings[i].keycode = XKeysymToKeycode (display->xdisplay,
                                                                  display->screen_bindings[i].keysym);
          
          ++i;
        }
    }

  if (display->window_bindings)
    {
      int i;
      
      i = 0;
      while (i < display->n_window_bindings)
        {
          display->window_bindings[i].keycode = XKeysymToKeycode (display->xdisplay,
                                                                  display->window_bindings[i].keysym);
          
          ++i;
        }
    }
}

static void
reload_modifiers (MetaDisplay *display)
{
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Reloading keycodes for binding tables\n");
  
  if (display->screen_bindings)
    {
      int i;
      
      i = 0;
      while (i < display->n_screen_bindings)
        {
          meta_display_devirtualize_modifiers (display,
                                               display->screen_bindings[i].modifiers,
                                               &display->screen_bindings[i].mask);

          meta_topic (META_DEBUG_KEYBINDINGS,
                      " Devirtualized mods 0x%x -> 0x%x (%s)\n",
                      display->screen_bindings[i].modifiers,
                      display->screen_bindings[i].mask,
                      display->screen_bindings[i].name);          
          
          ++i;
        }
    }

  if (display->window_bindings)
    {
      int i;
      
      i = 0;
      while (i < display->n_window_bindings)
        {
          meta_display_devirtualize_modifiers (display,
                                               display->window_bindings[i].modifiers,
                                               &display->window_bindings[i].mask);

          meta_topic (META_DEBUG_KEYBINDINGS,
                      " Devirtualized mods 0x%x -> 0x%x (%s)\n",
                      display->window_bindings[i].modifiers,
                      display->window_bindings[i].mask,
                      display->window_bindings[i].name);
          
          ++i;
        }
    }
}

static int
count_bindings (const MetaKeyPref *prefs,
                int                n_prefs)
{
  int i;
  int count;

  count = 0;
  i = 0;
  while (i < n_prefs)
    {
      if (prefs[i].keysym != None)
        {
          count += 1;

          if (prefs[i].add_shift &&
              (prefs[i].modifiers & META_VIRTUAL_SHIFT_MASK) == 0)
            count += 1;
        }
      
      ++i;
    }

  return count;
}

static void
rebuild_binding_table (MetaDisplay        *display,
                       MetaKeyBinding    **bindings_p,
                       int                *n_bindings_p,
                       const MetaKeyPref  *prefs,
                       int                 n_prefs)
{
  int n_bindings;
  int src, dest;
  
  n_bindings = count_bindings (prefs, n_prefs);
  g_free (*bindings_p);
  *bindings_p = g_new0 (MetaKeyBinding, n_bindings);

  src = 0;
  dest = 0;
  while (src < n_prefs)
    {
      if (prefs[src].keysym != None)
        {
          (*bindings_p)[dest].name = prefs[src].name;
          (*bindings_p)[dest].keysym = prefs[src].keysym;
          (*bindings_p)[dest].modifiers = prefs[src].modifiers;
          (*bindings_p)[dest].mask = 0;
          (*bindings_p)[dest].keycode = 0;          
          
          ++dest;

          if (prefs[src].add_shift &&
              (prefs[src].modifiers & META_VIRTUAL_SHIFT_MASK) == 0)
            {
              meta_topic (META_DEBUG_KEYBINDINGS,
                          "Binding %s also needs Shift grabbed\n",
                          prefs[src].name);
              
              (*bindings_p)[dest].name = prefs[src].name;
              (*bindings_p)[dest].keysym = prefs[src].keysym;
              (*bindings_p)[dest].modifiers = prefs[src].modifiers |
                META_VIRTUAL_SHIFT_MASK;
              (*bindings_p)[dest].mask = 0;
              (*bindings_p)[dest].keycode = 0;          
              
              ++dest;
            }
        }
      
      ++src;
    }

  g_assert (dest == n_bindings);
  
  *n_bindings_p = dest;

  meta_topic (META_DEBUG_KEYBINDINGS,
              " %d bindings in table\n",
              *n_bindings_p);
}

static void
rebuild_screen_binding_table (MetaDisplay *display)
{
  const MetaKeyPref *prefs;
  int n_prefs;
  
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Rebuilding screen binding table from preferences\n");
  
  meta_prefs_get_screen_bindings (&prefs, &n_prefs);
  rebuild_binding_table (display,
                         &display->screen_bindings,
                         &display->n_screen_bindings,
                         prefs, n_prefs);
}

static void
rebuild_window_binding_table (MetaDisplay *display)
{
  const MetaKeyPref *prefs;
  int n_prefs;
  
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Rebuilding window binding table from preferences\n");
  
  meta_prefs_get_window_bindings (&prefs, &n_prefs);
  rebuild_binding_table (display,
                         &display->window_bindings,
                         &display->n_window_bindings,
                         prefs, n_prefs);
}

static void
regrab_screen_bindings (MetaDisplay *display)
{
  GSList *tmp;

  meta_error_trap_push (display); /* for efficiency push outer trap */
  
  tmp = display->screens;
  while (tmp != NULL)
    {
      MetaScreen *screen = tmp->data;

      meta_screen_ungrab_keys (screen);
      meta_screen_grab_keys (screen);

      tmp = tmp->next;
    }

  meta_error_trap_pop (display, FALSE);
}

static void
regrab_window_bindings (MetaDisplay *display)
{
  GSList *windows;
  GSList *tmp;

  windows = meta_display_list_windows (display);

  meta_error_trap_push (display); /* for efficiency push outer trap */
  tmp = windows;
  while (tmp != NULL)
    {
      MetaWindow *w = tmp->data;
      
      meta_window_ungrab_keys (w);
      meta_window_grab_keys (w);
      
      tmp = tmp->next;
    }
  meta_error_trap_pop (display, FALSE);

  g_slist_free (windows);
}

static MetaKeyBindingAction
display_get_keybinding_action (MetaDisplay  *display,
                               unsigned int  keysym,
                               unsigned long mask)
{
  int i;

  i = display->n_screen_bindings - 1;
  while (i >= 0)
    {
      if (display->screen_bindings[i].keysym == keysym &&
          display->screen_bindings[i].mask == mask)
        {
          return meta_prefs_get_keybinding_action (display->screen_bindings[i].name);
        }
      
      --i;
    }

  return META_KEYBINDING_ACTION_NONE;
}

void
meta_display_process_mapping_event (MetaDisplay *display,
                                    XEvent      *event)
{ 
  if (event->xmapping.request == MappingModifier)
    {
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Received MappingModifier event, will reload modmap and redo keybindings\n");

      reload_modmap (display);

      reload_modifiers (display);
      
      regrab_screen_bindings (display);
      regrab_window_bindings (display);
    }
  else if (event->xmapping.request == MappingKeyboard)
    {
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Received MappingKeyboard event, will reload keycodes and redo keybindings\n");

      reload_keymap (display);
      reload_modmap (display);
      
      reload_keycodes (display);

      regrab_screen_bindings (display);
      regrab_window_bindings (display);
    }
}

static void
bindings_changed_callback (MetaPreference pref,
                           void          *data)
{
  MetaDisplay *display;

  display = data;
  
  switch (pref)
    {
    case META_PREF_SCREEN_KEYBINDINGS:
      rebuild_screen_binding_table (display);
      reload_keycodes (display);
      reload_modifiers (display);
      regrab_screen_bindings (display);
      break;
    case META_PREF_WINDOW_KEYBINDINGS:
      rebuild_window_binding_table (display);
      reload_keycodes (display);
      reload_modifiers (display);
      regrab_window_bindings (display);
      break;
    default:
      break;
    }
}


void
meta_display_init_keys (MetaDisplay *display)
{
  /* Keybindings */
  display->keymap = NULL;
  display->keysyms_per_keycode = 0;
  display->modmap = NULL;
  display->min_keycode = 0;
  display->max_keycode = 0;
  display->ignored_modifier_mask = 0;
  display->num_lock_mask = 0;
  display->scroll_lock_mask = 0;
  display->hyper_mask = 0;
  display->super_mask = 0;
  display->meta_mask = 0;
  display->screen_bindings = NULL;
  display->n_screen_bindings = 0;
  display->window_bindings = NULL;
  display->n_window_bindings = 0;

  XDisplayKeycodes (display->xdisplay,
                    &display->min_keycode,
                    &display->max_keycode);

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Display has keycode range %d to %d\n",
              display->min_keycode,
              display->max_keycode);

  reload_keymap (display);
  reload_modmap (display);

  rebuild_window_binding_table (display);
  rebuild_screen_binding_table (display);

  reload_keycodes (display);
  reload_modifiers (display);
  
  /* Keys are actually grabbed in meta_screen_grab_keys() */
  
  meta_prefs_add_listener (bindings_changed_callback, display);
}

void
meta_display_shutdown_keys (MetaDisplay *display)
{
  /* Note that display->xdisplay is invalid in this function */
  
  meta_prefs_remove_listener (bindings_changed_callback, display);

  if (display->keymap)
    meta_XFree (display->keymap);
  
  if (display->modmap)
    XFreeModifiermap (display->modmap);
  g_free (display->screen_bindings);
  g_free (display->window_bindings);
}

static const char*
keysym_name (int keysym)
{
  const char *name;
  
  name = XKeysymToString (keysym);
  if (name == NULL)
    name = "(unknown)";

  return name;
}

/* Grab/ungrab, ignoring all annoying modifiers like NumLock etc. */
static void
meta_change_keygrab (MetaDisplay *display,
                     Window       xwindow,
                     gboolean     grab,
                     int          keysym,
                     unsigned int keycode,
                     int          modmask)
{
  unsigned int ignored_mask;

  /* Grab keycode/modmask, together with
   * all combinations of ignored modifiers.
   * X provides no better way to do this.
   */

  meta_topic (META_DEBUG_KEYBINDINGS,
              "%s keybinding %s mask 0x%x on 0x%lx\n",
              grab ? "Grabbing" : "Ungrabbing",
              keysym_name (keysym),
              modmask, xwindow);

  /* efficiency, avoid so many XSync() */
  meta_error_trap_push (display);
  
  ignored_mask = 0;
  while (ignored_mask <= display->ignored_modifier_mask)
    {
      if (ignored_mask & ~(display->ignored_modifier_mask))
        {
          /* Not a combination of ignored modifiers
           * (it contains some non-ignored modifiers)
           */
          ++ignored_mask;
          continue;
        }

      if (meta_is_debugging ())
        meta_error_trap_push_with_return (display);
      if (grab)
        XGrabKey (display->xdisplay, keycode,
                  modmask | ignored_mask,
                  xwindow,
                  True,
                  GrabModeAsync, GrabModeSync);
      else
        XUngrabKey (display->xdisplay, keycode,
                    modmask | ignored_mask,
                    xwindow);

      if (meta_is_debugging ())
        {
          int result;
          
          result = meta_error_trap_pop_with_return (display, FALSE);
          
          if (grab && result != Success)
            {      
              if (result == BadAccess)
                meta_warning (_("Some other program is already using the key %s with modifiers %x as a binding\n"), keysym_name (keysym), modmask | ignored_mask);
              else
                meta_topic (META_DEBUG_KEYBINDINGS,
                            "Failed to grab key %s with modifiers %x\n",
                            keysym_name (keysym), modmask | ignored_mask);
            }
        }

      ++ignored_mask;
    }

  meta_error_trap_pop (display, FALSE);
}

static void
meta_grab_key (MetaDisplay *display,
               Window       xwindow,
               int          keysym,
               unsigned int keycode,
               int          modmask)
{
  meta_change_keygrab (display, xwindow, TRUE, keysym, keycode, modmask);
}

static void
grab_keys (MetaKeyBinding *bindings,
           int             n_bindings,
           MetaDisplay    *display,
           Window          xwindow)
{
  int i;

  g_assert (n_bindings == 0 || bindings != NULL);

  meta_error_trap_push (display);
  
  i = 0;
  while (i < n_bindings)
    {
      if (bindings[i].keycode != 0)
        {
          meta_grab_key (display, xwindow,
                         bindings[i].keysym,
                         bindings[i].keycode,
                         bindings[i].mask);
        }
      
      ++i;
    }

  meta_error_trap_pop (display, FALSE);
}

static void
ungrab_all_keys (MetaDisplay *display,
                 Window       xwindow)
{
  if (meta_is_debugging ())
    meta_error_trap_push_with_return (display);
  else
    meta_error_trap_push (display);

  XUngrabKey (display->xdisplay, AnyKey, AnyModifier,
              xwindow);

  if (meta_is_debugging ())
    {
      int result;
      
      result = meta_error_trap_pop_with_return (display, FALSE);
      
      if (result != Success)    
        meta_topic (META_DEBUG_KEYBINDINGS,
                    "Ungrabbing all keys on 0x%lx failed\n", xwindow);
    }
  else
    meta_error_trap_pop (display, FALSE);
}

void
meta_screen_grab_keys (MetaScreen *screen)
{
  if (screen->all_keys_grabbed)
    return;

  if (screen->keys_grabbed)
    return;

  grab_keys (screen->display->screen_bindings,
             screen->display->n_screen_bindings,
             screen->display, screen->xroot);

  screen->keys_grabbed = TRUE;
}

void
meta_screen_ungrab_keys (MetaScreen  *screen)
{
  if (screen->keys_grabbed)
    {
      ungrab_all_keys (screen->display, screen->xroot);
      screen->keys_grabbed = FALSE;
    }
}

void
meta_window_grab_keys (MetaWindow  *window)
{
  if (window->all_keys_grabbed)
    return;

  if (window->type == META_WINDOW_DOCK)
    {
      if (window->keys_grabbed)
        ungrab_all_keys (window->display, window->xwindow);
      window->keys_grabbed = FALSE;
      return;
    }
  
  if (window->keys_grabbed)
    {
      if (window->frame && !window->grab_on_frame)
        ungrab_all_keys (window->display, window->xwindow);
      else if (window->frame == NULL &&
               window->grab_on_frame)
        ; /* continue to regrab on client window */
      else
        return; /* already all good */
    }
  
  grab_keys (window->display->window_bindings,
             window->display->n_window_bindings,
             window->display,
             window->frame ? window->frame->xwindow : window->xwindow);

  window->keys_grabbed = TRUE;
  window->grab_on_frame = window->frame != NULL;
}

void
meta_window_ungrab_keys (MetaWindow  *window)
{
  if (window->keys_grabbed)
    {
      if (window->grab_on_frame &&
          window->frame != NULL)
        ungrab_all_keys (window->display,
                         window->frame->xwindow);
      else if (!window->grab_on_frame)
        ungrab_all_keys (window->display,
                         window->xwindow);

      window->keys_grabbed = FALSE;
    }
}

#ifdef WITH_VERBOSE_MODE
static const char*
grab_status_to_string (int status)
{
  switch (status)
    {
    case AlreadyGrabbed:
      return "AlreadyGrabbed";
    case GrabSuccess:
      return "GrabSuccess";
    case GrabNotViewable:
      return "GrabNotViewable";
    case GrabFrozen:
      return "GrabFrozen";
    case GrabInvalidTime:
      return "GrabInvalidTime";
    default:
      return "(unknown)";
    }
}
#endif /* WITH_VERBOSE_MODE */

static gboolean
grab_keyboard (MetaDisplay *display,
               Window       xwindow)
{
  int result;
  int grab_status;
  Time timestamp;
  
  /* Grab the keyboard, so we get key releases and all key
   * presses
   */
  meta_error_trap_push_with_return (display);

  timestamp = meta_display_get_current_time (display);
  grab_status = XGrabKeyboard (display->xdisplay,
                               xwindow, True,
                               GrabModeAsync, GrabModeAsync,
                               timestamp);
  
  if (grab_status != GrabSuccess)
    {
      meta_error_trap_pop_with_return (display, TRUE);
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "XGrabKeyboard() returned failure status %s time %lu\n",
                  grab_status_to_string (grab_status),
                  (unsigned long) timestamp);
      return FALSE;
    }
  else
    {
      result = meta_error_trap_pop_with_return (display, TRUE);
      if (result != Success)
        {
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "XGrabKeyboard() resulted in an error\n");
          return FALSE;
        }
    }
       
  meta_topic (META_DEBUG_KEYBINDINGS, "Grabbed all keys\n");
       
  return TRUE;
}

static void
ungrab_keyboard (MetaDisplay *display)
{
  Time timestamp;

  timestamp = meta_display_get_current_time (display);
      
  meta_error_trap_push (display);

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Ungrabbing keyboard with timestamp %lu\n",
              timestamp);
  XUngrabKeyboard (display->xdisplay, timestamp);
  meta_error_trap_pop (display, FALSE);
}

gboolean
meta_screen_grab_all_keys (MetaScreen *screen)
{
  gboolean retval;

  if (screen->all_keys_grabbed)
    return FALSE;
  
  if (screen->keys_grabbed)
    meta_screen_ungrab_keys (screen);

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Grabbing all keys on RootWindow\n");
  retval = grab_keyboard (screen->display, screen->xroot);
  if (retval)
    screen->all_keys_grabbed = TRUE;
  else
    meta_screen_grab_keys (screen);

  return retval;
}

void
meta_screen_ungrab_all_keys (MetaScreen *screen)
{
  if (screen->all_keys_grabbed)
    {
      ungrab_keyboard (screen->display);

      screen->all_keys_grabbed = FALSE;
      screen->keys_grabbed = FALSE;

      /* Re-establish our standard bindings */
      meta_screen_grab_keys (screen);
    }
}

gboolean
meta_window_grab_all_keys (MetaWindow  *window)
{
  Window grabwindow;
  gboolean retval;
  
  if (window->all_keys_grabbed)
    return FALSE;
  
  if (window->keys_grabbed)
    meta_window_ungrab_keys (window);

  /* Make sure the window is focused, otherwise the grab
   * won't do a lot of good.
   */
  meta_topic (META_DEBUG_FOCUS,
              "Focusing %s because we're grabbing all its keys\n",
              window->desc);
  meta_window_focus (window,
                     meta_display_get_current_time (window->display));
  
  grabwindow = window->frame ? window->frame->xwindow : window->xwindow;

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Grabbing all keys on window %s\n", window->desc);
  retval = grab_keyboard (window->display, grabwindow);
  if (retval)
    {
      window->keys_grabbed = FALSE;
      window->all_keys_grabbed = TRUE;
      window->grab_on_frame = window->frame != NULL;
    }

  return retval;
}

void
meta_window_ungrab_all_keys (MetaWindow *window)
{
  if (window->all_keys_grabbed)
    {
      ungrab_keyboard (window->display);

      window->grab_on_frame = FALSE;
      window->all_keys_grabbed = FALSE;
      window->keys_grabbed = FALSE;

      /* Re-establish our standard bindings */
      meta_window_grab_keys (window);
    }
}

static gboolean 
is_modifier (MetaDisplay *display,
             unsigned int keycode)
{
  int i;
  int map_size;
  gboolean retval = FALSE;  

  g_assert (display->modmap);
  
  map_size = 8 * display->modmap->max_keypermod;
  i = 0;
  while (i < map_size)
    {
      if (keycode == display->modmap->modifiermap[i])
        {
          retval = TRUE;
          break;
        }
      ++i;
    }
  
  return retval;
}

/* Indexes:
 * shift = 0
 * lock = 1
 * control = 2
 * mod1 = 3
 * mod2 = 4
 * mod3 = 5
 * mod4 = 6
 * mod5 = 7
 */

static gboolean 
is_specific_modifier (MetaDisplay *display,
                      unsigned int keycode,
                      unsigned int mask)
{
  int i;
  int end;
  gboolean retval = FALSE;
  int mod_index;
  
  g_assert (display->modmap);

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Checking whether code 0x%x is bound to modifier 0x%x\n",
              keycode, mask);
  
  mod_index = 0;
  mask = mask >> 1;
  while (mask != 0)
    {
      mod_index += 1;
      mask = mask >> 1;
    }

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Modifier has index %d\n", mod_index);
  
  end = (mod_index + 1) * display->modmap->max_keypermod;
  i = mod_index * display->modmap->max_keypermod;
  while (i < end)
    {
      if (keycode == display->modmap->modifiermap[i])
        {
          retval = TRUE;
          break;
        }
      ++i;
    }
  
  return retval;
}

static unsigned int
get_primary_modifier (MetaDisplay *display,
                      unsigned int entire_binding_mask)
{
  /* The idea here is to see if the "main" modifier
   * for Alt+Tab has been pressed/released. So if the binding
   * is Alt+Shift+Tab then releasing Alt is the thing that
   * ends the operation. It's pretty random how we order
   * these.
   */
  unsigned int masks[] = { Mod5Mask, Mod4Mask, Mod3Mask,
                           Mod2Mask, Mod1Mask, ControlMask,
                           ShiftMask, LockMask };

  int i;
  
  i = 0;
  while (i < (int) G_N_ELEMENTS (masks))
    {
      if (entire_binding_mask & masks[i])
        return masks[i];
      ++i;
    }

  return 0;
}

static gboolean
keycode_is_primary_modifier (MetaDisplay *display,
                             unsigned int keycode,
                             unsigned int entire_binding_mask)
{
  unsigned int primary_modifier;

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Checking whether code 0x%x is the primary modifier of mask 0x%x\n",
              keycode, entire_binding_mask);
  
  primary_modifier = get_primary_modifier (display, entire_binding_mask);
  if (primary_modifier != 0)
    return is_specific_modifier (display, keycode, primary_modifier);
  else
    return FALSE;
}

static gboolean
primary_modifier_still_pressed (MetaDisplay *display,
                                unsigned int entire_binding_mask)
{
  unsigned int primary_modifier;
  int x, y, root_x, root_y;
  Window root, child;
  guint mask;
  
  primary_modifier = get_primary_modifier (display, entire_binding_mask);
  
  XQueryPointer (display->xdisplay,
                 display->no_focus_window, /* some random window */
                 &root, &child,
                 &root_x, &root_y,
                 &x, &y,
                 &mask);

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Primary modifier 0x%x full grab mask 0x%x current state 0x%x\n",
              primary_modifier, entire_binding_mask, mask);
  
  if ((mask & primary_modifier) == 0)
    return FALSE;
  else
    return TRUE;
}

static const MetaKeyHandler*
find_handler (const MetaKeyHandler *handlers,
              const char           *name)
{
  const MetaKeyHandler *iter;

  iter = handlers;
  while (iter->name)
    {
      if (strcmp (iter->name,
                  name) == 0)
        return iter;

      ++iter;
    }

  return NULL;
}               

static void
process_event (MetaKeyBinding       *bindings,
               int                   n_bindings,
               const MetaKeyHandler *handlers,
               MetaDisplay          *display,
               MetaScreen           *screen,
               MetaWindow           *window,
               XEvent               *event,
               KeySym                keysym)
{
  int i;

  /* we used to have release-based bindings but no longer. */
  if (event->type == KeyRelease)
    return;
  
  i = 0;
  while (i < n_bindings)
    {
      if (bindings[i].keycode == event->xkey.keycode && 
          ((event->xkey.state & ~(display->ignored_modifier_mask)) ==
           bindings[i].mask) &&
          event->type == KeyPress)
        {
          const MetaKeyHandler *handler;

          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Binding keycode 0x%x mask 0x%x matches event 0x%x state 0x%x\n",
                      bindings[i].keycode, bindings[i].mask,
                      event->xkey.keycode, event->xkey.state);
          
          if (bindings[i].handler)
            handler = bindings[i].handler;
          else
            {
              handler = find_handler (handlers, bindings[i].name);
              bindings[i].handler = handler; /* cache */
            }

          if (handler == NULL)
            meta_bug ("Binding %s has no handler\n", bindings[i].name);
          else
            meta_topic (META_DEBUG_KEYBINDINGS,
                        "Running handler for %s\n",
                        bindings[i].name);
          
          (* handler->func) (display, screen, window, event,
                             &bindings[i]);
          return;
        }
      
      ++i;
    }

  meta_topic (META_DEBUG_KEYBINDINGS,
              "No handler found for this event in this binding table\n");
}

void
meta_display_process_key_event (MetaDisplay *display,
                                MetaWindow  *window,
                                XEvent      *event)
{
  KeySym keysym;
  gboolean handled;
  gboolean all_keys_grabbed;
  const char *str;
  MetaScreen *screen;

  XAllowEvents (display->xdisplay,
                all_bindings_disabled ? ReplayKeyboard : AsyncKeyboard,
                event->xkey.time);
  if (all_bindings_disabled)
    return;

  /* if key event was on root window, we have a shortcut */
  screen = meta_display_screen_for_root (display, event->xkey.window);
  
  /* else round-trip to server */
  if (screen == NULL)
    screen = meta_display_screen_for_xwindow (display,
                                              event->xany.window);

  if (screen == NULL)
    return; /* event window is destroyed */
  
  /* ignore key events on popup menus and such. */
  if (window == NULL &&
      meta_ui_window_is_widget (screen->ui, event->xany.window))
    return;
  
  /* window may be NULL */
  
  keysym = XKeycodeToKeysym (display->xdisplay, event->xkey.keycode, 0);

  str = XKeysymToString (keysym);
  
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Processing key %s event, keysym: %s state: 0x%x window: %s\n",
              event->type == KeyPress ? "press" : "release",
              str ? str : "none", event->xkey.state,
              window ? window->desc : "(no window)");

  all_keys_grabbed = window ? window->all_keys_grabbed : screen->all_keys_grabbed;
  if (!all_keys_grabbed)
    {
      /* Do the normal keybindings */
      process_event (display->screen_bindings,
                     display->n_screen_bindings,
                     screen_handlers,
                     display, screen, NULL, event, keysym);

      if (window)
        process_event (display->window_bindings,
                       display->n_window_bindings,
                       window_handlers,
                       display, screen, window, event, keysym);

      return;
    }

  if (display->grab_op == META_GRAB_OP_NONE)
    return;    

  /* If we get here we have a global grab, because
   * we're in some special keyboard mode such as window move
   * mode.
   */
  
  handled = FALSE;

  if (window ? (window == display->grab_window) :
               (screen == display->grab_screen))
    {
      switch (display->grab_op)
        {
        case META_GRAB_OP_KEYBOARD_MOVING:
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Processing event for keyboard move\n");
          g_assert (window != NULL);
          handled = process_keyboard_move_grab (display, screen,
                                                window, event, keysym);
          break;

        case META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN:
        case META_GRAB_OP_KEYBOARD_RESIZING_S:
        case META_GRAB_OP_KEYBOARD_RESIZING_N:
        case META_GRAB_OP_KEYBOARD_RESIZING_W:
        case META_GRAB_OP_KEYBOARD_RESIZING_E:
        case META_GRAB_OP_KEYBOARD_RESIZING_SE:
        case META_GRAB_OP_KEYBOARD_RESIZING_NE:
        case META_GRAB_OP_KEYBOARD_RESIZING_SW:
        case META_GRAB_OP_KEYBOARD_RESIZING_NW:          
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Processing event for keyboard resize\n");
          g_assert (window != NULL);
          handled = process_keyboard_resize_grab (display, screen,
                                                  window, event, keysym);
          break;

        case META_GRAB_OP_KEYBOARD_TABBING_NORMAL:
        case META_GRAB_OP_KEYBOARD_TABBING_DOCK:
        case META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL:
        case META_GRAB_OP_KEYBOARD_ESCAPING_DOCK:
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Processing event for keyboard tabbing/cycling\n");
          handled = process_tab_grab (display, screen, event, keysym);
          break;
          
        case META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING:
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Processing event for keyboard workspace switching\n");
          handled = process_workspace_switch_grab (display, screen, event, keysym);
          break;

        default:
          break;
        }
    }
  
  /* end grab if a key that isn't used gets pressed */
  if (!handled)
    {
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Ending grab op %d on key event sym %s\n",
                  display->grab_op, XKeysymToString (keysym));
      meta_display_end_grab_op (display, event->xkey.time);
    }
}

static gboolean
process_keyboard_move_grab (MetaDisplay *display,
                            MetaScreen  *screen,
                            MetaWindow  *window,
                            XEvent      *event,
                            KeySym       keysym)
{
  gboolean handled;
  int x, y;
  int incr;
  gboolean smart_snap;
  int edge;
  
  handled = FALSE;

  /* don't care about releases, but eat them, don't end grab */
  if (event->type == KeyRelease)
    return TRUE;

  /* don't end grab on modifier key presses */
  if (is_modifier (display, event->xkey.keycode))
    return TRUE;

  if (display->grab_wireframe_active)
    {
      x = display->grab_wireframe_rect.x;
      y = display->grab_wireframe_rect.y;
    }
  else
    {
      meta_window_get_position (window, &x, &y);
    }

  /* FIXME in wireframe mode the edge snapping is all fucked up
   * since the edge-find routines use window->rect. Window
   * constraints are also broken with wireframe.
   */  
  smart_snap = (event->xkey.state & ShiftMask) != 0;
  if (display->grab_wireframe_active)
    smart_snap = FALSE;
  
#define SMALL_INCREMENT 1
#define NORMAL_INCREMENT 10

  if (smart_snap)
    incr = 0;
  else if (event->xkey.state & ControlMask)
    incr = SMALL_INCREMENT;
  else
    incr = NORMAL_INCREMENT;

  if (keysym == XK_Escape)
    {
      /* End resize and restore to original state.
       * The move_resize is only needed when !wireframe
       * since in wireframe we always moveresize at the end
       * of the grab only.
       */
      meta_window_move_resize (display->grab_window,
                               TRUE,
                               display->grab_initial_window_pos.x,
                               display->grab_initial_window_pos.y,
                               display->grab_initial_window_pos.width,
                               display->grab_initial_window_pos.height);
      display->grab_was_cancelled = TRUE;
    }
  
  /* When moving by increments, we still snap to edges if the move
   * to the edge is smaller than the increment. This is because
   * Shift + arrow to snap is sort of a hidden feature. This way
   * people using just arrows shouldn't get too frustrated.
   */
  switch (keysym)
    {
    case XK_KP_Home:
    case XK_KP_Prior:
    case XK_Up:
    case XK_KP_Up:
      y -= incr;

      if (!display->grab_wireframe_active)
        {
          edge = meta_window_find_next_horizontal_edge (window, FALSE);
          if (smart_snap || ((edge > y) && ABS (edge - y) < incr))
            y = edge;
        }
          
      handled = TRUE;
      break;
    case XK_KP_End:
    case XK_KP_Next:
    case XK_Down:
    case XK_KP_Down:
      y += incr;

      if (!display->grab_wireframe_active)
        {
          edge = meta_window_find_next_horizontal_edge (window, TRUE);
          if (smart_snap || ((edge < y) && ABS (edge - y) < incr))
            y = edge;
        }
          
      handled = TRUE;
      break;
    }
  
  switch (keysym)
    {
    case XK_KP_Home:
    case XK_KP_End:
    case XK_Left:
    case XK_KP_Left:
      x -= incr;

      if (!display->grab_wireframe_active)
        {
          edge = meta_window_find_next_vertical_edge (window, FALSE);
          if (smart_snap || ((edge > x) && ABS (edge - x) < incr))
            x = edge;
        }

      handled = TRUE;
      break;
    case XK_KP_Prior:
    case XK_KP_Next:
    case XK_Right:
    case XK_KP_Right:
      x += incr;

      if (!display->grab_wireframe_active)
        {
          edge = meta_window_find_next_vertical_edge (window, TRUE);
          if (smart_snap || ((edge < x) && ABS (edge - x) < incr))
            x = edge;
        }
      
      handled = TRUE;
      break;
    }

  if (handled)
    {
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Computed new window location %d,%d due to keypress\n",
                  x, y);
      if (display->grab_wireframe_active)
        {
          MetaRectangle new_xor;

          display->grab_wireframe_rect.x = x;
          display->grab_wireframe_rect.y = y;
          
          meta_window_get_xor_rect (window, &display->grab_wireframe_rect,
                                    &new_xor);
          
          meta_effects_update_wireframe (window->screen,
                                         &display->grab_wireframe_last_xor_rect,
                                         &new_xor);
          display->grab_wireframe_last_xor_rect = new_xor;
        }
      else
        {
          meta_window_move (window, TRUE, x, y);
        }
      
      meta_window_update_keyboard_move (window);
    }

  return handled;
}

static gboolean
process_keyboard_resize_grab (MetaDisplay *display,
                              MetaScreen  *screen,
                              MetaWindow  *window,
                              XEvent      *event,
                              KeySym       keysym)
{
  gboolean handled;
  int height_inc;
  int width_inc;
  int x, y;
  int orig_x, orig_y;
  int width, height;
  gboolean smart_snap;
  int edge;
  int gravity;
  
  handled = FALSE;

  /* don't care about releases, but eat them, don't end grab */
  if (event->type == KeyRelease)
    return TRUE;

  /* don't end grab on modifier key presses */
  if (is_modifier (display, event->xkey.keycode))
    return TRUE;

  if (keysym == XK_Escape)
    {
      /* End resize and restore to original state.
       * The move_resize is only needed when !wireframe
       * since in wireframe we always moveresize at the end
       * of the grab only.
       */
      meta_window_move_resize (display->grab_window,
                               TRUE,
                               display->grab_initial_window_pos.x,
                               display->grab_initial_window_pos.y,
                               display->grab_initial_window_pos.width,
                               display->grab_initial_window_pos.height);
      display->grab_was_cancelled = TRUE;

      return FALSE;
    }
  
  switch (display->grab_op)
    {
    case META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN:
      switch (keysym)
        {
        case XK_Up:
        case XK_KP_Up:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_N;          
          handled = TRUE;
          break;
        case XK_Down:
        case XK_KP_Down:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_S;
          handled = TRUE;
          break;
        case XK_Left:
        case XK_KP_Left:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_W;
          handled = TRUE;
          break;
        case XK_Right:
        case XK_KP_Right:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_E;
          handled = TRUE;
          break;
        }
      break;
      
    case META_GRAB_OP_KEYBOARD_RESIZING_S:
      switch (keysym)
        {
        case XK_Left:
        case XK_KP_Left:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_SW;
          handled = TRUE;
          break;
        case XK_Right:
        case XK_KP_Right:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_SE;
          handled = TRUE;
          break;
        }
      break;

    case META_GRAB_OP_KEYBOARD_RESIZING_N:
      switch (keysym)
        {
        case XK_Left:
        case XK_KP_Left:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_NW;
          handled = TRUE;
          break;
        case XK_Right:
        case XK_KP_Right:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_NE;
          handled = TRUE;
          break;
        }
      break;
      
    case META_GRAB_OP_KEYBOARD_RESIZING_W:
      switch (keysym)
        {
        case XK_Up:
        case XK_KP_Up:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_NW;          
          handled = TRUE;
          break;
        case XK_Down:
        case XK_KP_Down:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_SW;
          handled = TRUE;
          break;
        }
      break;

    case META_GRAB_OP_KEYBOARD_RESIZING_E:
      switch (keysym)
        {
        case XK_Up:
        case XK_KP_Up:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_NE; 
          handled = TRUE;
          break;
        case XK_Down:
        case XK_KP_Down:
          display->grab_op = META_GRAB_OP_KEYBOARD_RESIZING_SE;
          handled = TRUE;
          break;
        }
      break;
      
    case META_GRAB_OP_KEYBOARD_RESIZING_SE:
    case META_GRAB_OP_KEYBOARD_RESIZING_NE:
    case META_GRAB_OP_KEYBOARD_RESIZING_SW:
    case META_GRAB_OP_KEYBOARD_RESIZING_NW:
      break;

    default:
      g_assert_not_reached ();
      break;
    }

  if (handled)
    {
      meta_window_update_keyboard_resize (window, TRUE);
      return TRUE; 
    }

  if (display->grab_wireframe_active)
    {
      x = display->grab_wireframe_rect.x;
      y = display->grab_wireframe_rect.y;
      orig_x = x;
      orig_y = y;
      width = display->grab_wireframe_rect.width;
      height = display->grab_wireframe_rect.height;
    }
  else
    {
      meta_window_get_position (window, &orig_x, &orig_y);
      x = orig_x;
      y = orig_y;
      width = window->rect.width;
      height = window->rect.height;
    }

  gravity = meta_resize_gravity_from_grab_op (display->grab_op);

  /* FIXME in wireframe mode the edge snapping is all fucked up
   * since the edge-find routines use window->rect. Window
   * constraints are also broken with wireframe.
   */  
  smart_snap = (event->xkey.state & ShiftMask) != 0;
  if (display->grab_wireframe_active)
    smart_snap = FALSE;
  
#define SMALL_INCREMENT 1
#define NORMAL_INCREMENT 10

  if (smart_snap)
    {
      height_inc = 0;
      width_inc = 0;
    }
  else if (event->xkey.state & ControlMask)
    {
      if (window->size_hints.width_inc > 1)
        width_inc = window->size_hints.width_inc;
      else
        width_inc = SMALL_INCREMENT;

      if (window->size_hints.height_inc > 1)
        height_inc = window->size_hints.height_inc;
      else
        height_inc = SMALL_INCREMENT;
    }  
  else
    {
      if (window->size_hints.width_inc > 1)
        width_inc = window->size_hints.width_inc;
      else
        width_inc = NORMAL_INCREMENT;

      if (window->size_hints.height_inc > 1)
        height_inc = window->size_hints.height_inc;
      else
        height_inc = NORMAL_INCREMENT;
    }
  
  /* When moving by increments, we still snap to edges if the move
   * to the edge is smaller than the increment. This is because
   * Shift + arrow to snap is sort of a hidden feature. This way
   * people using just arrows shouldn't get too frustrated.
   */
      
  switch (keysym)
    {
    case XK_Up:
    case XK_KP_Up:
      switch (gravity)
        {
        case NorthGravity:
        case NorthWestGravity:
        case NorthEastGravity:
          /* Move bottom edge up */
          height -= height_inc;
          
          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_horizontal_edge (window, TRUE);
              
              if (smart_snap || ((edge > (y+height)) &&
                                 ABS (edge - (y+height)) < height_inc))
                height = edge - y;
            }
          
          handled = TRUE;
          break;

        case SouthGravity:
        case SouthWestGravity:
        case SouthEastGravity:
          /* Move top edge up */
          y -= height_inc;

          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_horizontal_edge (window, FALSE);          

              if (smart_snap || ((edge > y) && ABS (edge - y) < height_inc))
                y = edge;
            }
          
          height += (orig_y - y);
          break;

        case EastGravity:
        case WestGravity:
        case CenterGravity:
          g_assert_not_reached ();
          break;
        }
      
      handled = TRUE;
      break;

    case XK_Down:
    case XK_KP_Down:
      switch (gravity)
        {
        case NorthGravity:
        case NorthWestGravity:
        case NorthEastGravity:
          /* Move bottom edge down */
          height += height_inc;

          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_horizontal_edge (window, TRUE);

               if (smart_snap || ((edge < (y+height)) &&
                                  ABS (edge - (y+height)) < height_inc))
                 height = edge - y;
            }
          
          handled = TRUE;
          break;

        case SouthGravity:
        case SouthWestGravity:
        case SouthEastGravity:
          /* Move top edge down */
          y += height_inc;

          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_horizontal_edge (window, FALSE);

              if (smart_snap || ((edge < y) && ABS (edge - y) < height_inc))
                y = edge;
            }
          
          height -= (y - orig_y);
          break;

        case EastGravity:
        case WestGravity:
        case CenterGravity:
          g_assert_not_reached ();
          break;
        }
      
      handled = TRUE;
      break;
      
    case XK_Left:
    case XK_KP_Left:
      switch (gravity)
        {
        case EastGravity:
        case SouthEastGravity:
        case NorthEastGravity:
          /* Move left edge left */
          x -= width_inc;
          
          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_vertical_edge (window, TRUE);

               if (smart_snap || ((edge > x) && ABS (edge - x) < width_inc))
                 x = edge;
            }
          
          width += (orig_x - x);
          break;

        case WestGravity:
        case SouthWestGravity:
        case NorthWestGravity:
          /* Move right edge left */
          width -= width_inc;
          
          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_vertical_edge (window, FALSE);
              
              if (smart_snap || ((edge > (x+width)) &&
                                 ABS (edge - (x+width)) < width_inc))
                width = edge - x;
            }
          
          handled = TRUE;
          break;

        case NorthGravity:
        case SouthGravity:
        case CenterGravity:
          g_assert_not_reached ();
          break;
        }
      
      handled = TRUE;
      break;
      
    case XK_Right:
    case XK_KP_Right:
      switch (gravity)
        {
        case EastGravity:
        case SouthEastGravity:
        case NorthEastGravity:
          /* Move left edge right */
          x += width_inc;

          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_vertical_edge (window, FALSE);

              if (smart_snap || ((edge < x) && ABS (edge - x) < width_inc))
                x = edge;
            }
          
          width -= (x - orig_x);
          break;

        case WestGravity:
        case SouthWestGravity:
        case NorthWestGravity:
          /* Move right edge right */
          width += width_inc;

          if (!display->grab_wireframe_active)
            {
              edge = meta_window_find_next_vertical_edge (window, TRUE);
              
              if (smart_snap || ((edge > (x+width)) &&
                                 ABS (edge - (x+width)) < width_inc))
                width = edge - x;
            }
          
          handled = TRUE;
          break;

        case NorthGravity:
        case SouthGravity:
        case CenterGravity:
          g_assert_not_reached ();
          break;
        }
      
      handled = TRUE;
      break;
          
    default:
      break;
    }

  /* fixup hack (just paranoia, not sure it's required) */
  if (height < 1)
    height = 1;
  if (width < 1)
    width = 1;
  
  if (handled)
    {
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Computed new window location %d,%d %dx%d due to keypress\n",
                  x, y, width, height);
      
      if (display->grab_wireframe_active)
        {
          MetaRectangle new_xor;
      
          window->display->grab_wireframe_rect.x = x;
          window->display->grab_wireframe_rect.y = y;
          window->display->grab_wireframe_rect.width = width;
          window->display->grab_wireframe_rect.height = height;

          meta_window_get_xor_rect (window,
                                    &window->display->grab_wireframe_rect,
                                    &new_xor);
          
          meta_effects_update_wireframe (window->screen,
                                         &window->display->grab_wireframe_last_xor_rect,
                                         &new_xor);
          window->display->grab_wireframe_last_xor_rect = new_xor;

          /* do this after drawing the wires, so we don't draw over it */
          meta_window_refresh_resize_popup (window);
        }
      else
        {
          meta_window_move_resize (window, TRUE, x, y, width, height);
        }
      meta_window_update_keyboard_resize (window, FALSE);
    }

  return handled;
}

static gboolean
end_keyboard_grab (MetaDisplay *display,
		   unsigned int keycode)
{
#ifdef HAVE_XKB
  if (display->xkb_base_event_type > 0)
    {
      unsigned int primary_modifier;
      XkbStateRec state;
  
      primary_modifier = get_primary_modifier (display, display->grab_mask);
      
      XkbGetState (display->xdisplay, XkbUseCoreKbd, &state);

      if (!(primary_modifier & state.mods))
	return TRUE;
    }
  else
#endif
    {
      if (keycode_is_primary_modifier (display, keycode, display->grab_mask))
	return TRUE;
    }

  return FALSE;
}

static gboolean
process_tab_grab (MetaDisplay *display,
                  MetaScreen  *screen,
                  XEvent      *event,
                  KeySym       keysym)
{
  MetaKeyBindingAction action;
  gboolean popup_not_showing;
  gboolean backward;
  gboolean key_used;

  if (screen != display->grab_screen)
    return FALSE;

  g_return_val_if_fail (screen->tab_popup != NULL, FALSE);

  if (event->type == KeyRelease &&
      end_keyboard_grab (display, event->xkey.keycode))
    {
      /* We're done, move to the new window. */
      Window target_xwindow;
      MetaWindow *target_window;

      target_xwindow =
        (Window) meta_ui_tab_popup_get_selected (screen->tab_popup);
      target_window =
        meta_display_lookup_x_window (display, target_xwindow);

      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Ending tab operation, primary modifier released\n");
      
      if (target_window)
        {
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Activating target window\n");

          meta_topic (META_DEBUG_FOCUS, "Activating %s due to tab popup "
                      "selection and turning mouse_mode off\n",
                      target_window->desc);
          display->mouse_mode = FALSE;
          meta_window_activate (target_window, event->xkey.time);

          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Ending grab early so we can focus the target window\n");
          meta_display_end_grab_op (display, event->xkey.time);

          return TRUE; /* we already ended the grab */
        }
      
      return FALSE; /* end grab */
    }
  
  /* don't care about other releases, but eat them, don't end grab */
  if (event->type == KeyRelease)
    return TRUE;

  /* don't end grab on modifier key presses */
  if (is_modifier (display, event->xkey.keycode))
    return TRUE;

  action = display_get_keybinding_action (display,
                                          keysym,
                                          display->grab_mask);

  /* FIXME weird side effect here is that you can use the Escape
   * key while tabbing, or the tab key while escaping
   */
  
  popup_not_showing = FALSE;
  key_used = FALSE;
  backward = FALSE;

  switch (action)
    {
    case META_KEYBINDING_ACTION_CYCLE_PANELS:
    case META_KEYBINDING_ACTION_CYCLE_WINDOWS:
      popup_not_showing = TRUE;
      key_used = TRUE;
      break;
    case META_KEYBINDING_ACTION_CYCLE_PANELS_BACKWARD:
    case META_KEYBINDING_ACTION_CYCLE_WINDOWS_BACKWARD:
      popup_not_showing = TRUE;
      key_used = TRUE;
      backward = TRUE;
      break;
    case META_KEYBINDING_ACTION_SWITCH_PANELS:
    case META_KEYBINDING_ACTION_SWITCH_WINDOWS:
      key_used = TRUE;
      break;
    case META_KEYBINDING_ACTION_SWITCH_PANELS_BACKWARD:
    case META_KEYBINDING_ACTION_SWITCH_WINDOWS_BACKWARD:
      key_used = TRUE;
      backward = TRUE;
      break;
    default:
      break;
    }
  
  if (key_used)
    {
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Key pressed, moving tab focus in popup\n");

      if (event->xkey.state & ShiftMask)
        backward = !backward;

      if (backward)
        meta_ui_tab_popup_backward (screen->tab_popup);
      else
        meta_ui_tab_popup_forward (screen->tab_popup);
      
      if (popup_not_showing)
        {
          /* We can't actually change window focus, due to the grab.
           * but raise the window.
           */
          Window target_xwindow;
          MetaWindow *target_window;
          
          target_xwindow =
            (Window) meta_ui_tab_popup_get_selected (screen->tab_popup);
          target_window =
            meta_display_lookup_x_window (display, target_xwindow);
          
          if (target_window)
            {
              meta_window_raise (target_window);
            }
        }
    }
  else
    {
      /* end grab */
      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Ending tabbing/cycling, uninteresting key pressed\n");

      meta_topic (META_DEBUG_KEYBINDINGS, 
                  "Syncing to old stack positions.\n");
      meta_stack_set_positions (screen->stack,
                                screen->display->grab_old_window_stacking);
    }
  
  return key_used;
}

static void
handle_activate_workspace (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *event_window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  int which;
  MetaWorkspace *workspace;
  
  which = GPOINTER_TO_INT (binding->handler->data);
 
  workspace = NULL;
  if (which < 0)
    {      
      workspace = meta_workspace_get_neighbor (screen->active_workspace,
                                               which);
    }
  else
    {
      workspace = meta_screen_get_workspace_by_index (screen, which);
    }
  
  if (workspace)
    {
      meta_workspace_activate (workspace, event->xkey.time);
    }
  else
    {
      /* We could offer to create it I suppose */
    }
}

static void
error_on_generic_command (const char *key,
                          const char *command,
                          const char *message,
                          int         screen_number,
                          Time        timestamp)
{
  GError *err;
  char *argv[10];
  char numbuf[32];
  char timestampbuf[32];
  
  sprintf (numbuf, "%d", screen_number);
  sprintf (timestampbuf, "%lu", timestamp);
  
  argv[0] = METACITY_LIBEXECDIR"/metacity-dialog";
  argv[1] = "--screen";
  argv[2] = numbuf;
  argv[3] = "--timestamp";
  argv[4] = timestampbuf;
  argv[5] = "--command-failed-error";
  argv[6] = (char *)key;
  argv[7] = (char*) (command ? command : "");
  argv[8] = (char*) message;
  argv[9] = NULL;
  
  err = NULL;
  if (!g_spawn_async_with_pipes ("/",
                                 argv,
                                 NULL,
                                 0,
                                 NULL, NULL,
                                 NULL,
                                 NULL,
                                 NULL,
                                 NULL,
                                 &err))
    {
      meta_warning (_("Error launching metacity-dialog to print an error about a command: %s\n"),
                    err->message);
      g_error_free (err);
    }
}

static void
error_on_command (int         command_index,
                  const char *command,
                  const char *message,
                  int         screen_number,
                  Time        timestamp)
{
  char *key;
  
  meta_warning ("Error on command %d \"%s\": %s\n",
                command_index, command, message);  

  key = meta_prefs_get_gconf_key_for_command (command_index);

  error_on_generic_command (key, command, message, screen_number, timestamp);
  
  g_free (key);
}

static void
error_on_terminal_command (const char *command,
                           const char *message,
                           int         screen_number,
                           Time        timestamp)
{
  const char *key;
  
  meta_warning ("Error on terminal command \"%s\": %s\n", command, message);  

  key = meta_prefs_get_gconf_key_for_terminal_command ();

  error_on_generic_command (key, command, message, screen_number, timestamp);
}

static void
set_display_setup_func (void *data)
{
  const char *screen_name = data;
  char *full;

  full = g_strdup_printf ("DISPLAY=%s", screen_name);

  putenv (full);

  /* do not free full, because putenv is lame */
} 

static gboolean
meta_spawn_command_line_async_on_screen (const gchar *command_line,
                                         MetaScreen  *screen,
                                         GError     **error)
{
  gboolean retval;
  gchar **argv = NULL;

  g_return_val_if_fail (command_line != NULL, FALSE);

  if (!g_shell_parse_argv (command_line,
                           NULL, &argv,
                           error))
    return FALSE;
  
  retval = g_spawn_async (NULL,
                          argv,
                          NULL,
                          G_SPAWN_SEARCH_PATH,
                          set_display_setup_func,
                          screen->screen_name,
                          NULL,
                          error);
  g_strfreev (argv);

  return retval;
}


static void
handle_run_command (MetaDisplay    *display,
                    MetaScreen     *screen,
                    MetaWindow     *window,
                    XEvent         *event,
                    MetaKeyBinding *binding)
{
  int which;
  const char *command;
  GError *err;
  
  which = GPOINTER_TO_INT (binding->handler->data);
 
  command = meta_prefs_get_command (which);

  if (command == NULL)
    {
      char *s;

      meta_topic (META_DEBUG_KEYBINDINGS,
                  "No command %d to run in response to keybinding press\n",
                  which);
      
      s = g_strdup_printf (_("No command %d has been defined.\n"),
                           which + 1);
      error_on_command (which, NULL, s, screen->number, event->xkey.time);
      g_free (s);
      
      return;
    }

  err = NULL;
  if (!meta_spawn_command_line_async_on_screen (command, screen, &err))
    {
      error_on_command (which, command, err->message, screen->number, event->xkey.time);
      
      g_error_free (err);
    }
}


static void
handle_maximize_vert (MetaDisplay    *display,
                      MetaScreen     *screen,
                      MetaWindow     *window,
                      XEvent         *event,
                      MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->has_resize_func)
        meta_window_fill_vertical (window);
    }
}

static void
handle_maximize_horiz (MetaDisplay    *display,
                       MetaScreen     *screen,
                       MetaWindow     *window,
                       XEvent         *event,
                       MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->has_resize_func)
        meta_window_fill_horizontal (window);
    }
}

static gboolean
process_workspace_switch_grab (MetaDisplay *display,
                               MetaScreen  *screen,
                               XEvent      *event,
                               KeySym       keysym)
{
  MetaWorkspace *workspace;

  if (screen != display->grab_screen)
    return FALSE;

  g_return_val_if_fail (screen->tab_popup != NULL, FALSE);

  if (event->type == KeyRelease &&
      end_keyboard_grab (display, event->xkey.keycode))
    {
      /* We're done, move to the new workspace. */
      MetaWorkspace *target_workspace;

      target_workspace =
        (MetaWorkspace *) meta_ui_tab_popup_get_selected (screen->tab_popup);

      meta_topic (META_DEBUG_KEYBINDINGS,
                  "Ending workspace tab operation, primary modifier released\n");

      if (target_workspace == screen->active_workspace)
        {
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Ending grab so we can focus on the target workspace\n");
          meta_display_end_grab_op (display, event->xkey.time);

          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Focusing default window on target workspace\n");

          meta_workspace_focus_default_window (target_workspace, 
                                               NULL,
                                               event->xkey.time);

          return TRUE; /* we already ended the grab */
        }

      /* Workspace switching should have already occurred on KeyPress */
      meta_warning ("target_workspace != active_workspace.  Some other event must have occurred.\n");
      
      return FALSE; /* end grab */
    }
  
  /* don't care about other releases, but eat them, don't end grab */
  if (event->type == KeyRelease)
    return TRUE;

  /* don't end grab on modifier key presses */
  if (is_modifier (display, event->xkey.keycode))
    return TRUE;

  /* select the next workspace in the tabpopup */
  workspace =
    (MetaWorkspace *) meta_ui_tab_popup_get_selected (screen->tab_popup);
  
  if (workspace)
    {
      MetaWorkspace *target_workspace;
      MetaKeyBindingAction action;

      action = display_get_keybinding_action (display,
                                              keysym,
                                              display->grab_mask);

      switch (action)
        {
        case META_KEYBINDING_ACTION_WORKSPACE_UP:
          target_workspace = meta_workspace_get_neighbor (workspace,
                                                          META_MOTION_UP);
          break;

        case META_KEYBINDING_ACTION_WORKSPACE_DOWN:
          target_workspace = meta_workspace_get_neighbor (workspace,
                                                          META_MOTION_DOWN);
          break;

        case META_KEYBINDING_ACTION_WORKSPACE_LEFT:
          target_workspace = meta_workspace_get_neighbor (workspace,
                                                          META_MOTION_LEFT);
          break;

        case META_KEYBINDING_ACTION_WORKSPACE_RIGHT:
          target_workspace = meta_workspace_get_neighbor (workspace,
                                                          META_MOTION_RIGHT);
          break;

        default:
          target_workspace = NULL;
          break;
        }

      if (target_workspace)
        {
          meta_ui_tab_popup_select (screen->tab_popup,
                                    (MetaTabEntryKey) target_workspace);
          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Tab key pressed, moving tab focus in popup\n");

          meta_topic (META_DEBUG_KEYBINDINGS,
                      "Activating target workspace\n");

          meta_workspace_activate (target_workspace, event->xkey.time);

          return TRUE; /* we already ended the grab */
        }
    }

  /* end grab */
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Ending workspace tabbing & focusing default window; uninteresting key pressed\n");
  workspace =
    (MetaWorkspace *) meta_ui_tab_popup_get_selected (screen->tab_popup);
  meta_workspace_focus_default_window (workspace, NULL, event->xkey.time);
  return FALSE;
}

static void
handle_toggle_desktop (MetaDisplay    *display,
                       MetaScreen     *screen,
                       MetaWindow     *window,
                       XEvent         *event,
                       MetaKeyBinding *binding)
{
  if (screen->active_workspace->showing_desktop)
    {
      meta_screen_unshow_desktop (screen);
      meta_workspace_focus_default_window (screen->active_workspace, 
                                           NULL,
                                           event->xkey.time);
    }
  else
    meta_screen_show_desktop (screen, event->xkey.time);
}

static void
handle_panel_keybinding (MetaDisplay    *display,
                         MetaScreen     *screen,
                         MetaWindow     *window,
                         XEvent         *event,
                         MetaKeyBinding *binding)
{
  MetaKeyBindingAction action;
  Atom action_atom;
  XClientMessageEvent ev;
  
  action = GPOINTER_TO_INT (binding->handler->data);

  action_atom = None;
  switch (action)
    {
    case META_KEYBINDING_ACTION_PANEL_MAIN_MENU:
      action_atom = display->atom_gnome_panel_action_main_menu;
      break;
    case META_KEYBINDING_ACTION_PANEL_RUN_DIALOG:
      action_atom = display->atom_gnome_panel_action_run_dialog;
      break;
    default:
      return;
    }
   
  ev.type = ClientMessage;
  ev.window = screen->xroot;
  ev.message_type = display->atom_gnome_panel_action;
  ev.format = 32;
  ev.data.l[0] = action_atom;
  ev.data.l[1] = event->xkey.time;

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Sending panel message with timestamp %lu\n", event->xkey.time);

  meta_error_trap_push (display);

  /* Release the grab for the panel before sending the event */
  XUngrabKeyboard (display->xdisplay, event->xkey.time);

  XSendEvent (display->xdisplay,
	      screen->xroot,
	      False,
	      StructureNotifyMask,
	      (XEvent*) &ev);

  meta_error_trap_pop (display, FALSE);
}

static void
handle_activate_menu (MetaDisplay    *display,
                      MetaScreen     *screen,
                      MetaWindow     *event_window,
                      XEvent         *event,
                      MetaKeyBinding *binding)
{
  if (display->focus_window)
    {
      int x, y;

      meta_window_get_position (display->focus_window,
                                &x, &y);
      
      meta_window_show_menu (display->focus_window,
                             x, y,
                             0,
                             event->xkey.time);
    }
}

static MetaGrabOp
tab_op_from_tab_type (MetaTabList type)
{
  switch (type)
    {
    case META_TAB_LIST_NORMAL:
      return META_GRAB_OP_KEYBOARD_TABBING_NORMAL;
    case META_TAB_LIST_DOCKS:
      return META_GRAB_OP_KEYBOARD_TABBING_DOCK;
    }

  g_assert_not_reached ();
  
  return 0;
}

static MetaGrabOp
cycle_op_from_tab_type (MetaTabList type)
{
  switch (type)
    {
    case META_TAB_LIST_NORMAL:
      return META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL;
    case META_TAB_LIST_DOCKS:
      return META_GRAB_OP_KEYBOARD_ESCAPING_DOCK;
    }

  g_assert_not_reached ();
  
  return 0;
}

static void
do_choose_window (MetaDisplay    *display,
                  MetaScreen     *screen,
                  MetaWindow     *event_window,
                  XEvent         *event,
                  MetaKeyBinding *binding,
                  gboolean        backward,
                  gboolean        show_popup)
{
  MetaTabList type;
  MetaWindow *initial_selection;
  
  type = GPOINTER_TO_INT (binding->handler->data);
  
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Tab list = %d show_popup = %d\n", type, show_popup);
  
  /* reverse direction if shift is down */
  if (event->xkey.state & ShiftMask)
    backward = !backward;
  
  initial_selection = meta_display_get_tab_next (display,
                                                 type,
                                                 screen,
                                                 screen->active_workspace,
                                                 NULL,
                                                 backward);

  /* Note that focus_window may not be in the tab chain, but it's OK */
  if (initial_selection == NULL)
    initial_selection = meta_display_get_tab_current (display,
                                                      type, screen,
                                                      screen->active_workspace);
  
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Initially selecting window %s\n",
              initial_selection ? initial_selection->desc : "(none)");  

  if (initial_selection != NULL)
    {
      if (binding->mask == 0)
        {
          /* If no modifiers, we can't do the "hold down modifier to keep
           * moving" thing, so we just instaswitch by one window.
           */
          meta_topic (META_DEBUG_FOCUS,
                      "Activating %s and turning off mouse_mode due to "
                      "switch/cycle windows with no modifiers\n",
                      initial_selection->desc);
          display->mouse_mode = FALSE;
          meta_window_activate (initial_selection, event->xkey.time);
        }
      else if (meta_display_begin_grab_op (display,
                                           screen,
                                           NULL,
                                           show_popup ?
                                           tab_op_from_tab_type (type) :
                                           cycle_op_from_tab_type (type),
                                           FALSE,
                                           event->xkey.serial,
                                           0,
                                           binding->mask,
                                           event->xkey.time,
                                           0, 0))
        {
          if (!primary_modifier_still_pressed (display,
                                               binding->mask))
            {
              /* This handles a race where modifier might be released
               * before we establish the grab. must end grab
               * prior to trying to focus a window.
               */
              meta_topic (META_DEBUG_FOCUS, 
                          "Ending grab, activating %s, and turning off "
                          "mouse_mode due to switch/cycle windows where "
                          "modifier was released prior to grab\n",
                          initial_selection->desc);
              meta_display_end_grab_op (display, event->xkey.time);
              display->mouse_mode = FALSE;
              meta_window_activate (initial_selection, event->xkey.time);
            }
          else
            {
              meta_ui_tab_popup_select (screen->tab_popup,
                                        (MetaTabEntryKey) initial_selection->xwindow);
              
              if (show_popup)
                meta_ui_tab_popup_set_showing (screen->tab_popup,
                                               TRUE);
              else
                meta_window_raise (initial_selection);
            }
        }
    }
}

static void
handle_tab_forward (MetaDisplay    *display,
                    MetaScreen     *screen,
                    MetaWindow     *event_window,
                    XEvent         *event,
                    MetaKeyBinding *binding)
{
  do_choose_window (display, screen,
                    event_window, event, binding, FALSE, TRUE);
}

static void
handle_tab_backward (MetaDisplay    *display,
                     MetaScreen     *screen,
                     MetaWindow     *event_window,
                     XEvent         *event,
                     MetaKeyBinding *binding)
{
  do_choose_window (display, screen,
                    event_window, event, binding, TRUE, TRUE);
}

static void
handle_cycle_forward (MetaDisplay    *display,
                      MetaScreen     *screen,
                      MetaWindow     *event_window,
                      XEvent         *event,
                      MetaKeyBinding *binding)
{
  do_choose_window (display, screen,
                    event_window, event, binding, FALSE, FALSE); 
}

static void
handle_cycle_backward (MetaDisplay    *display,
                       MetaScreen     *screen,
                       MetaWindow     *event_window,
                       XEvent         *event,
                       MetaKeyBinding *binding)
{
  do_choose_window (display, screen,
                    event_window, event, binding, TRUE, FALSE); 
}

static void
handle_toggle_fullscreen  (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->fullscreen)
        meta_window_unmake_fullscreen (window);
      else if (window->has_fullscreen_func)
        meta_window_make_fullscreen (window);
    }
}

static void
handle_toggle_above       (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->wm_state_above)
        meta_window_unmake_above (window);
      else
        meta_window_make_above (window);
    }
}

static void
handle_toggle_maximize    (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->maximized)
        meta_window_unmaximize (window);
      else if (window->has_maximize_func)
        meta_window_maximize (window);
    }
}

static void
handle_maximize           (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->has_maximize_func)
        meta_window_maximize (window);
    }
}

static void
handle_unmaximize         (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->maximized)
        meta_window_unmaximize (window);
    }
}

static void
handle_toggle_shade       (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->shaded)
        meta_window_unshade (window);
      else if (window->has_shade_func)
        meta_window_shade (window);
    }
}

static void
handle_close_window       (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
     if (window->has_close_func)
       meta_window_delete (window, event->xkey.time);
}

static void
handle_minimize_window (MetaDisplay    *display,
                        MetaScreen     *screen,
                        MetaWindow     *window,
                        XEvent         *event,
                        MetaKeyBinding *binding)
{
  if (window)
     if (window->has_minimize_func)
       meta_window_minimize (window);
}

static void
handle_begin_move         (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      meta_window_begin_grab_op (window,
                                 META_GRAB_OP_KEYBOARD_MOVING,
                                 event->xkey.time);
    }
}

static void
handle_begin_resize       (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      meta_window_begin_grab_op (window,
                                 META_GRAB_OP_KEYBOARD_RESIZING_UNKNOWN,
                                 event->xkey.time);
    }
}

static void
handle_toggle_sticky      (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  if (window)
    {
      if (window->on_all_workspaces)
        meta_window_unstick (window);
      else
        meta_window_stick (window);
    }
}

static void
do_handle_move_to_workspace  (MetaDisplay    *display,
                              MetaScreen     *screen,
                              MetaWindow     *window,
                              XEvent         *event,
                              MetaKeyBinding *binding,
                              gboolean        flip)
{
  int which;
  MetaWorkspace *workspace;
  
  which = GPOINTER_TO_INT (binding->handler->data);

  if (window == NULL || window->always_sticky)
    return;
  
  workspace = NULL;
  if (which < 0)
    {      
      workspace = meta_workspace_get_neighbor (screen->active_workspace,
                                               which);
    }
  else
    {
      workspace = meta_screen_get_workspace_by_index (screen, which);
    }
  
  if (workspace)
    {
      /* Activate second, so the window is never unmapped */
      meta_window_change_workspace (window, workspace);
      if (flip)
        {
          meta_topic (META_DEBUG_FOCUS,
                      "Resetting mouse_mode to FALSE due to "
                      "do_handle_move_to_workspace() call with flip set.\n");
          workspace->screen->display->mouse_mode = FALSE;
          meta_workspace_activate_with_focus (workspace,
                                              window,
                                              event->xkey.time);
        }
    }
  else
    {
      /* We could offer to create it I suppose */
    }  
}

static void
handle_move_to_workspace  (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
                           XEvent         *event,
                           MetaKeyBinding *binding)
{
  do_handle_move_to_workspace (display,
                               screen,
                               window,
                               event,
                               binding,
                               FALSE);
}
static void
handle_move_to_workspace_flip  (MetaDisplay    *display,
                                MetaScreen     *screen,
                                MetaWindow     *window,
                                XEvent         *event,
                                MetaKeyBinding *binding)
{
  do_handle_move_to_workspace (display,
                               screen,
                               window,
                               event,
                               binding,
                               TRUE);
}

static void 
handle_raise_or_lower (MetaDisplay    *display,
                       MetaScreen     *screen,
		       MetaWindow     *window,
		       XEvent         *event,
		       MetaKeyBinding *binding)
{
  /* Get window at pointer */
  
  if (window)
    {
      MetaWindow *above = NULL;
      
      /* Check if top */
      if (meta_stack_get_top (window->screen->stack) == window)
	{
	  meta_window_lower (window);
	  return;
	}
      
      /* else check if windows in same layer are intersecting it */
      
      above = meta_stack_get_above (window->screen->stack, window, TRUE); 

      while (above)
	{
	  MetaRectangle tmp, win_rect, above_rect;

          if (above->mapped)
            {
              meta_window_get_outer_rect (window, &win_rect);
              meta_window_get_outer_rect (above, &above_rect);
              
              /* Check if obscured */
              if (meta_rectangle_intersect (&win_rect, &above_rect, &tmp))
                {
                  meta_window_raise (window);
                  return;
                }
            }
	  
	  above = meta_stack_get_above (window->screen->stack, above, TRUE); 
	}

      /* window is not obscured */
      meta_window_lower (window);
    }
}

static void
handle_raise (MetaDisplay    *display,
              MetaScreen     *screen,
              MetaWindow     *window,
              XEvent         *event,
              MetaKeyBinding *binding)
{
  if (window)
    {
      meta_window_raise (window);
    }
}

static void
handle_lower (MetaDisplay    *display,
              MetaScreen     *screen,
              MetaWindow     *window,
              XEvent         *event,
              MetaKeyBinding *binding)
{
  if (window)
    {
      meta_window_lower (window);
    }
}

static void
handle_workspace_switch  (MetaDisplay    *display,
                          MetaScreen     *screen,
                          MetaWindow     *window,
                          XEvent         *event,
                          MetaKeyBinding *binding)
{
  int motion;
  unsigned int grab_mask;
     
  motion = GPOINTER_TO_INT (binding->handler->data);

  g_assert (motion < 0); 

  meta_topic (META_DEBUG_KEYBINDINGS,
              "Starting tab between workspaces, showing popup\n");

  /* FIXME should we use binding->mask ? */
  grab_mask = event->xkey.state & ~(display->ignored_modifier_mask);
  
  if (meta_display_begin_grab_op (display,
                                  screen,
                                  NULL,
                                  META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING,
                                  FALSE,
                                  event->xkey.serial,
                                  0,
                                  grab_mask,
                                  event->xkey.time,
                                  0, 0))
    {
      MetaWorkspace *next;
      gboolean grabbed_before_release;
      
      next = meta_workspace_get_neighbor (screen->active_workspace, motion);
      g_assert (next); 

      grabbed_before_release = primary_modifier_still_pressed (display, grab_mask);
      
      meta_topic (META_DEBUG_KEYBINDINGS,
		  "Activating target workspace\n");

      if (!grabbed_before_release)
        {
          /* end the grab right away, modifier possibly released
           * before we could establish the grab and receive the
           * release event. Must end grab before we can switch
           * spaces.
           */
          meta_display_end_grab_op (display, event->xkey.time);
        }
      
      meta_workspace_activate (next, event->xkey.time);

      if (grabbed_before_release)
        {
          meta_ui_tab_popup_select (screen->tab_popup, (MetaTabEntryKey) next);
          
          /* only after selecting proper space */
          meta_ui_tab_popup_set_showing (screen->tab_popup, TRUE);
        }
    }
}

#if 0
static void
handle_spew_mark (MetaDisplay    *display,
                  MetaScreen     *screen,
                  MetaWindow     *window,
                  XEvent         *event,
                  MetaKeyBinding *binding)
{
  meta_verbose ("-- MARK MARK MARK MARK --\n");
}
#endif

void
meta_set_keybindings_disabled (gboolean setting)
{
  all_bindings_disabled = setting;
  meta_topic (META_DEBUG_KEYBINDINGS,
              "Keybindings %s\n", all_bindings_disabled ? "disabled" : "enabled");
}

static void
handle_run_terminal (MetaDisplay    *display,
                     MetaScreen     *screen,
                     MetaWindow     *window,
                     XEvent         *event,
                     MetaKeyBinding *binding)
{
  const char *command;
  GError *err;
  
  command = meta_prefs_get_terminal_command ();

  if (command == NULL)
    {
      char *s;

      meta_topic (META_DEBUG_KEYBINDINGS,
                  "No terminal command to run in response to "
		  "keybinding press\n");
      
      s = g_strdup_printf (_("No terminal command has been defined.\n"));
      error_on_terminal_command (NULL, s, screen->number, event->xkey.time);
      g_free (s);
      
      return;
    }

  err = NULL;
  if (!meta_spawn_command_line_async_on_screen (command, screen, &err))
    {
      error_on_terminal_command (command, err->message, screen->number,
		      		 event->xkey.time);
      
      g_error_free (err);
    }
}