Introduce support for Desktop Notifications on Haiku

* doc/lispref/os.texi (Desktop Notifications): Document Haiku
desktop notifications.

* etc/NEWS: Announce this change.

* lisp/org/org-clock.el (haiku-notifications-notify): New
declaration.
(org-show-notification): Employ that function.

* src/haiku_io.c (haiku_len) <NOTIFICATION_CLICK_EVENT>: Return
the length for this type of event.

* src/haiku_select.cc (my_team_id, be_display_notification): New
functions.

* src/haiku_support.cc (my_team_id, ArgvReceived): New
functions.

* src/haiku_support.h (enum haiku_event_type): New event type
NOTIFICATION_CLICK_EVENT.
(struct haiku_notification_click_event): New structure.

* src/haikuselect.c (haiku_notifications_notify_1)
(Fhaiku_notifications_notify): New functions.
(syms_of_haikuselect): Register new defsubr.

* src/haikuterm.c (haiku_read_socket):
* src/haikuselect.h:
* src/termhooks.h: Add new events for notification clicks on
Haiku.

1 files changed, 6 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 808b5996729..966d1f8c292 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -784,6 +784,12 @@ See the "(elisp) Porting Old Advice" node for help converting them
 to use 'advice-add' or 'define-advice' instead.
 
 +++
+** Desktop notifications are now supported on the Haiku operating system.
+The new function 'haiku-notifications-notify' provides a subset of the
+capabilities of the 'notifications-notify' function in a manner
+analogous to 'w32-notification-notify'.
+
++++
 ** New value 'if-regular' for the REPLACE argument to 'insert-file-contents'.
 It results in 'insert-file-contents' erasing the buffer instead of
 preserving markers if the file being inserted is not a regular file,