Implement keyboard grabs.

Implement keyboard grabs.

2006-01-16  Anders Carlsson  <andersca@mac.com>

        * gdk/quartz/gdkdisplay-quartz.c:
        * gdk/quartz/gdkevents-quartz.c:
        (gdk_keyboard_grab):
        (gdk_display_keyboard_ungrab):
        (gdk_keyboard_grab_info_libgtk_only):
        (find_window_for_event):
        Implement keyboard grabs.

        (_gdk_quartz_send_map_events):
        * gdk/quartz/gdkmain-quartz.c:
        * gdk/quartz/gdkprivate-quartz.h:
        New function that synthesizes map events.

        * gdk/quartz/gdkwindow-quartz.c:
        (_gdk_windowing_window_init):
        The root window is always visible.

        (all_parents_shown):
        (show_window_internal):
        Send map events.

        (gdk_window_hide):
        Ungrab keyboard and pointer