Project: jabber.el
Code Location: git://emacs-jabber.git.sourceforge.net/gitroot/emacs-jabber/emacs-jabbermaster
Browse
/
Download File
jabber-roster.el
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
;; jabber-roster.el - displaying the roster    -*- coding: utf-8; -*-

;; Copyright (C) 2009 - Kirill A. Korinskiy - catap@catap.ru
;; Copyright (C) 2003, 2004, 2007, 2008 - Magnus Henoch - mange@freemail.hu
;; Copyright (C) 2002, 2003, 2004 - tom berger - object@intelectronica.net

;; This file is a part of jabber.el.

;; 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

(require 'jabber-presence)
(require 'jabber-util)
(require 'jabber-alert)
(require 'jabber-keymap)
(require 'format-spec)
(require 'cl)				;for `find'
(require 'jabber-private)

(defgroup jabber-roster nil "roster display options"
  :group 'jabber)

(defcustom jabber-roster-line-format " %a %c %-25n %u %-8s  %S"
  "The format specification of the lines in the roster display.

These fields are available:

%a   Avatar, if any
%c   \"*\" if the contact is connected, or \" \" if not
%u   sUbscription state - see below
%n   Nickname of contact, or JID if no nickname
%j   Bare JID of contact (without resource)
%r   Highest-priority resource of contact
%s   Availability of contact as string (\"Online\", \"Away\" etc)
%S   Status string specified by contact

%u is replaced by one of the strings given by
`jabber-roster-subscription-display'."
  :type 'string
  :group 'jabber-roster)

(defcustom jabber-roster-subscription-display '(("none" . "   ")
						("from" . "<  ")
						("to" . "  >")
						("both" . "<->"))
  "Strings used for indicating subscription status of contacts.
\"none\" means that there is no subscription between you and the
contact.
\"from\" means that the contact has a subscription to you, but you
have no subscription to the contact.
\"to\" means that you have a subscription to the contact, but the
contact has no subscription to you.
\"both\" means a mutual subscription.

Having a \"presence subscription\" means being able to see the
other person's presence.

Some fancy arrows you might want to use, if your system can
display them: ← → ⇄ ↔"
  :type '(list (cons :format "%v" (const :format "" "none") (string :tag "None"))
	       (cons :format "%v" (const :format "" "from") (string :tag "From"))
	       (cons :format "%v" (const :format "" "to") (string :tag "To"))
	       (cons :format "%v" (const :format "" "both") (string :tag "Both")))
  :group 'jabber-roster)

(defcustom jabber-resource-line-format "     %r - %s (%S), priority %p"
  "The format specification of resource lines in the roster display.
These are displayed when `jabber-show-resources' permits it.

These fields are available:

%c   \"*\" if the contact is connected, or \" \" if not
%n   Nickname of contact, or JID if no nickname
%j   Bare JID of contact (without resource)
%p   Priority of this resource
%r   Name of this resource
%s   Availability of resource as string (\"Online\", \"Away\" etc)
%S   Status string specified by resource"
  :type 'string
  :group 'jabber-roster)

(defcustom jabber-roster-sort-functions
  '(jabber-roster-sort-by-status jabber-roster-sort-by-displayname)
  "Sort roster according to these criteria.

These functions should take two roster items A and B, and return:
<0 if A < B
0  if A = B
>0 if A > B"
  :type 'hook
  :options '(jabber-roster-sort-by-status
	     jabber-roster-sort-by-displayname
	     jabber-roster-sort-by-group)
  :group 'jabber-roster)

(defcustom jabber-sort-order '("chat" "" "away" "dnd" "xa")
  "Sort by status in this order.  Anything not in list goes last.
Offline is represented as nil."
  :type '(repeat (restricted-sexp :match-alternatives (stringp nil)))
  :group 'jabber-roster)

(defcustom jabber-show-resources 'sometimes
  "Show contacts' resources in roster?
This can be one of the following symbols:

nil       Never show resources
sometimes Show resources when there are more than one
always    Always show resources"
  :type '(radio (const :tag "Never" nil)
		(const :tag "When more than one connected resource" sometimes)
		(const :tag "Always" always))
  :group 'jabber-roster)

(defcustom jabber-show-offline-contacts t
  "Show offline contacts in roster when non-nil"
  :type 'boolean
  :group 'jabber-roster)

(defcustom jabber-remove-newlines t
  "Remove newlines in status messages?
Newlines in status messages mess up the roster display.  However,
they are essential to status message poets.  Therefore, you get to
choose the behaviour.

Trailing newlines are always removed, regardless of this variable."
  :type 'boolean
  :group 'jabber-roster)

(defcustom jabber-roster-show-bindings t
  "Show keybindings in roster buffer?"
  :type 'boolean
  :group 'jabber-roster)

(defcustom jabber-roster-show-title t
  "Show title in roster buffer?"
  :type 'boolean
  :group 'jabber-roster)

(defcustom jabber-roster-mode-hook nil
  "Hook run when entering Roster mode."
  :group 'jabber-roster
  :type 'hook)

(defcustom jabber-roster-default-group-name "other"
  "Default group name for buddies without groups."
  :group 'jabber-roster
  :type 'string
  :get '(lambda (var)
	  (let ((val (symbol-value var)))
	    (when (stringp val)
	      (set-text-properties 0 (length val) nil val))
	    val))
  :set '(lambda (var val)
          (when (stringp val)
	    (set-text-properties 0 (length val) nil val))
          (custom-set-default var val))
  )

(defcustom jabber-roster-show-empty-group nil
  "Show empty groups in roster?"
  :group 'jabber-roster
  :type 'boolean)

(defcustom jabber-roster-roll-up-group nil
  "Show empty groups in roster?"
  :group 'jabber-roster
  :type 'boolean)

(defface jabber-roster-user-online
  '((t (:foreground "blue" :weight bold :slant normal)))
  "face for displaying online users"
  :group 'jabber-roster)

(defface jabber-roster-user-xa
  '((((background dark)) (:foreground "magenta" :weight normal :slant italic))
    (t (:foreground "black" :weight normal :slant italic)))
  "face for displaying extended away users"
  :group 'jabber-roster)

(defface jabber-roster-user-dnd
  '((t (:foreground "red" :weight normal :slant italic)))
  "face for displaying do not disturb users"
  :group 'jabber-roster)

(defface jabber-roster-user-away
  '((t (:foreground "dark green" :weight normal :slant italic)))
  "face for displaying away users"
  :group 'jabber-roster)

(defface jabber-roster-user-chatty
  '((t (:foreground "dark orange" :weight bold :slant normal)))
  "face for displaying chatty users"
  :group 'jabber-roster)

(defface jabber-roster-user-error
  '((t (:foreground "red" :weight light :slant italic)))
  "face for displaying users sending presence errors"
  :group 'jabber-roster)

(defface jabber-roster-user-offline
  '((t (:foreground "dark grey" :weight light :slant italic)))
  "face for displaying offline users"
  :group 'jabber-roster)

(defvar jabber-roster-debug nil
  "debug roster draw")

(defvar jabber-roster-mode-map
  (let ((map (make-sparse-keymap)))
    (suppress-keymap map)
    (set-keymap-parent map jabber-common-keymap)
    (define-key map [mouse-2] 'jabber-roster-mouse-2-action-at-point)
    (define-key map (kbd "TAB") 'jabber-go-to-next-roster-item)
    (define-key map (kbd "S-TAB") 'jabber-go-to-previous-roster-item)
    (define-key map (kbd "M-TAB") 'jabber-go-to-previous-roster-item)
    (define-key map (kbd "<backtab>") 'jabber-go-to-previous-roster-item)
    (define-key map (kbd "RET") 'jabber-roster-ret-action-at-point)
    (define-key map (kbd "C-k") 'jabber-roster-delete-at-point)

    (define-key map "e" 'jabber-roster-edit-action-at-point)
    (define-key map "s" 'jabber-send-subscription-request)
    (define-key map "q" 'bury-buffer)
    (define-key map "i" 'jabber-get-disco-items)
    (define-key map "j" 'jabber-muc-join)
    (define-key map "I" 'jabber-get-disco-info)
    (define-key map "b" 'jabber-get-browse)
    (define-key map "v" 'jabber-get-version)
    (define-key map "a" 'jabber-send-presence)
    (define-key map "g" 'jabber-display-roster)
    (define-key map "S" 'jabber-ft-send)
    (define-key map "o" 'jabber-roster-toggle-offline-display)
    (define-key map "H" 'jabber-roster-toggle-binding-display)
    ;;(define-key map "D" 'jabber-disconnect)
    map))

(defun jabber-roster-ret-action-at-point ()
  "Action for ret. Before try to roll up/down group. Eval
chat-with-jid-at-point is no group at point"
  (interactive)
  (let ((group-at-point (get-text-property (point)
					   'jabber-group))
	(account-at-point (get-text-property (point)
					     'jabber-account))
        (jid-at-point (get-text-property (point)
					 'jabber-jid)))
    (if (and group-at-point account-at-point)
	(jabber-roster-roll-group account-at-point group-at-point)
      ;; Is this a normal contact, or a groupchat?  Let's ask it.
      (jabber-disco-get-info
       account-at-point (jabber-jid-user jid-at-point) nil
       #'jabber-roster-ret-action-at-point-1
       jid-at-point))))

(defun jabber-roster-ret-action-at-point-1 (jc jid result)
  ;; If we get an error, assume it's a normal contact.
  (if (eq (car result) 'error)
      (jabber-chat-with jc jid)
    ;; Otherwise, let's check whether it has a groupchat identity.
    (let ((identities (car result)))
      (if (find "conference" (if (sequencep identities) identities nil)
		:key (lambda (i) (aref i 1))
		:test #'string=)
	  ;; Yes!  Let's join it.
	  (jabber-muc-join jc jid
			   (jabber-muc-read-my-nickname jc jid t)
			   t)
	;; No.  Let's open a normal chat buffer.
	(jabber-chat-with jc jid)))))

(defun jabber-roster-mouse-2-action-at-point (e)
  "Action for mouse-2. Before try to roll up/down group. Eval
chat-with-jid-at-point is no group at point"
  (interactive "e")
  (mouse-set-point e)
  (let ((group-at-point (get-text-property (point)
					   'jabber-group))
	(account-at-point (get-text-property (point)
					     'jabber-account)))
    (if (and group-at-point account-at-point)
	(jabber-roster-roll-group account-at-point group-at-point)
      (jabber-popup-combined-menu))))

(defun jabber-roster-delete-at-point ()
  "Delete at point from roster.
Try to delete the group from all contaacs.
Delete a jid if there is no group at point."
  (interactive)
  (let ((group-at-point (get-text-property (point)
					   'jabber-group))
	(account-at-point (get-text-property (point)
					     'jabber-account)))
    (if (and group-at-point account-at-point)
	(let ((jids-with-group
	       (gethash group-at-point
			(plist-get
			 (fsm-get-state-data account-at-point)
			 :roster-hash))))
	  (jabber-roster-delete-group-from-jids account-at-point
						jids-with-group
						group-at-point))
      (jabber-roster-delete-jid-at-point))))

(defun jabber-roster-edit-action-at-point ()
  "Action for e. Before try to edit group name.
Eval `jabber-roster-change' is no group at point"
  (interactive)
  (let ((group-at-point (get-text-property (point)
					   'jabber-group))
	(account-at-point (get-text-property (point)
					     'jabber-account)))
    (if (and group-at-point account-at-point)
	(let ((jids-with-group
	       (gethash group-at-point
			(plist-get
			 (fsm-get-state-data account-at-point)
			 :roster-hash))))
	  (jabber-roster-edit-group-from-jids account-at-point
					      jids-with-group
					      group-at-point))
      (call-interactively 'jabber-roster-change))))

(defun jabber-roster-roll-group (jc group-name &optional set)
  "Roll up/down group in roster.
If optional SET is t, roll up group.
If SET is nor t or nil, roll down group."
  (let* ((state-data (fsm-get-state-data jc))
	 (roll-groups (plist-get state-data :roster-roll-groups))
         (new-roll-groups (if (find group-name roll-groups :test 'string=)
                              ;; group is rolled up, roll it down if needed
                              (if (or (not set) (and set (not (eq set t))))
                                  (remove-if-not (lambda (group-name-in-list)
                                                   (not (string= group-name
                                                                 group-name-in-list)))
                                                 roll-groups)
                                roll-groups)
                            ;; group is rolled down, roll it up if needed
                            (if (or (not set) (and set (eq set t)))
                                (append roll-groups (list group-name))
                              roll-groups))) )
    (unless (equal roll-groups new-roll-groups)
      (plist-put
       state-data :roster-roll-groups
       new-roll-groups)
      (jabber-display-roster))))

(defun jabber-roster-mode ()
  "Major mode for Jabber roster display.
Use the keybindings (mnemonic as Chat, Roster, Info, MUC, Service) to
bring up menus of actions.
\\{jabber-roster-mode-map}"
  (kill-all-local-variables)
  (setq major-mode 'jabber-roster-mode
	mode-name "jabber-roster")
  (use-local-map jabber-roster-mode-map)
  (setq buffer-read-only t)
  (if (fboundp 'run-mode-hooks)
      (run-mode-hooks 'jabber-roster-mode-hook)
    (run-hooks 'jabber-roster-mode-hook)))

(put 'jabber-roster-mode 'mode-class 'special)

;;;###autoload
(defun jabber-switch-to-roster-buffer (&optional jc)
  "Switch to roster buffer.
Optional JC argument is ignored; it's there so this function can
be used in `jabber-post-connection-hooks'."
  (interactive)
  (if (not (get-buffer jabber-roster-buffer))
      (jabber-display-roster)
    (switch-to-buffer jabber-roster-buffer)))

(defun jabber-sort-roster (jc)
  "sort roster according to online status"
  (let ((state-data (fsm-get-state-data jc)))
    (dolist (group (plist-get state-data :roster-groups))
      (let ((group-name (car group)))
	(puthash group-name
		 (sort
		  (gethash group-name
			   (plist-get state-data :roster-hash))
		  #'jabber-roster-sort-items)
		 (plist-get state-data :roster-hash))))))

(defun jabber-roster-prepare-roster (jc)
  "make a hash based roster"
  (let* ((state-data (fsm-get-state-data jc))
	 (hash (make-hash-table :test 'equal))
	 (buddies (plist-get state-data :roster))
	 (all-groups '()))
    (dolist (buddy buddies)
      (let ((groups (get buddy 'groups)))
	(if groups
	    (progn
	      (dolist (group groups)
		(progn
		  (setq all-groups (append all-groups (list group)))
		  (puthash group
			   (append (gethash group hash)
				   (list buddy))
			   hash))))
	  (progn
	    (setq all-groups (append all-groups
				     (list jabber-roster-default-group-name)))
	    (puthash jabber-roster-default-group-name
		     (append (gethash jabber-roster-default-group-name hash)
			     (list buddy))
		     hash)))))

    ;; remove duplicates name of group
    (setq all-groups (sort
		      (remove-duplicates all-groups
					 :test 'string=)
		      'string<))

    ;; put to state-data all-groups as list of list
    (plist-put state-data :roster-groups
	       (mapcar #'list all-groups))

    ;; put to state-data hash-roster
    (plist-put state-data :roster-hash
	       hash)))

(defun jabber-roster-sort-items (a b)
  "Sort roster items A and B according to `jabber-roster-sort-functions'.
Return t if A is less than B."
  (dolist (fn jabber-roster-sort-functions)
    (let ((comparison (funcall fn a b)))
      (cond
       ((< comparison 0)
	(return t))
       ((> comparison 0)
	(return nil))))))

(defun jabber-roster-sort-by-status (a b)
  "Sort roster items by online status.
See `jabber-sort-order' for order used."
  (flet ((order (item) (length (member (get item 'show) jabber-sort-order))))
    (let ((a-order (order a))
	  (b-order (order b)))
      ;; Note reversed test.  Items with longer X-order go first.
      (cond
       ((< a-order b-order)
	1)
       ((> a-order b-order)
	-1)
       (t
	0)))))

(defun jabber-roster-sort-by-displayname (a b)
  "Sort roster items by displayed name."
  (let ((a-name (jabber-jid-displayname a))
	(b-name (jabber-jid-displayname b)))
    (cond
     ((string-lessp a-name b-name) -1)
     ((string= a-name b-name) 0)
     (t 1))))

(defun jabber-roster-sort-by-group (a b)
  "Sort roster items by group membership."
  (flet ((first-group (item) (or (car (get item 'groups)) "")))
    (let ((a-group (first-group a))
	  (b-group (first-group b)))
      (cond
       ((string-lessp a-group b-group) -1)
       ((string= a-group b-group) 0)
       (t 1)))))

(defun jabber-fix-status (status)
  "Make status strings more readable"
  (when status
    (when (string-match "\n+$" status)
      (setq status (replace-match "" t t status)))
    (when jabber-remove-newlines
      (while (string-match "\n" status)
	(setq status (replace-match " " t t status))))
    status))

(defvar jabber-roster-ewoc nil
  "Ewoc displaying the roster.
There is only one; we don't rely on buffer-local variables or
such.")

(defun jabber-roster-filter-display (buddies)
  "Filter BUDDIES for items to be displayed in the roster"
  (remove-if-not (lambda (buddy) (or jabber-show-offline-contacts
				     (get buddy 'connected)))
		 buddies))

(defun jabber-roster-toggle-offline-display ()
  "Toggle display of offline contacts.
To change this permanently, customize the `jabber-show-offline-contacts'."
  (interactive)
  (setq jabber-show-offline-contacts
	(not jabber-show-offline-contacts))
  (jabber-display-roster))

(defun jabber-roster-toggle-binding-display ()
  "Toggle display of the roster binding text."
  (interactive)
  (setq jabber-roster-show-bindings
	(not jabber-roster-show-bindings))
  (jabber-display-roster))

(defun jabber-display-roster ()
  "switch to the main jabber buffer and refresh the roster display to reflect the current information"
  (interactive)
  (with-current-buffer (get-buffer-create jabber-roster-buffer)
    (if (not (eq major-mode 'jabber-roster-mode))
	(jabber-roster-mode))
    (setq buffer-read-only nil)
    ;; line-number-at-pos is in Emacs >= 21.4.  Only used to avoid
    ;; excessive scrolling when updating roster, so not absolutely
    ;; necessary.
    (let ((current-line (and (fboundp 'line-number-at-pos) (line-number-at-pos)))
	  (current-column (current-column)))
      (erase-buffer)
      (setq jabber-roster-ewoc nil)
      (when jabber-roster-show-title
	(insert (jabber-propertize "Jabber roster" 'face 'jabber-title-large) "\n"))
      (when jabber-roster-show-bindings
	(insert "RET      Open chat buffer        C-k      Delete roster item
e        Edit item               s        Send subscription request
q        Bury buffer             i        Get disco items
I        Get disco info          b        Browse
j        Join groupchat (MUC)    v        Get client version
a        Send presence           o        Show offline contacts on/off
C-c C-c  Chat menu               C-c C-m  Multi-User Chat menu
C-c C-i  Info menu               C-c C-r  Roster menu
C-c C-s  Service menu

H        Toggle displaying this text
"))
      (insert "__________________________________\n\n")
      (if (null jabber-connections)
	  (insert "Not connected\n")
	(let ((map (make-sparse-keymap)))
	  (define-key map [mouse-2] #'jabber-send-presence)
	  (insert (jabber-propertize (concat (format " - %s"
						     (cdr (assoc *jabber-current-show* jabber-presence-strings)))
					     (if (not (zerop (length *jabber-current-status*)))
						 (format " (%s)"
							 (jabber-fix-status *jabber-current-status*)))
					     " -")
				     'face (or (cdr (assoc *jabber-current-show* jabber-presence-faces))
					       'jabber-roster-user-online)
				     ;;'mouse-face (cons 'background-color "light grey")
				     'keymap map)
		  "\n")))

      (dolist (jc jabber-connections)
	;; use a hash-based roster
	(when (not (plist-get (fsm-get-state-data jc) :roster-hash))
	  (jabber-roster-prepare-roster jc))
	;; We sort everything before putting it in the ewoc
	(jabber-sort-roster jc)
	(let ((before-ewoc (point))
	      (ewoc (ewoc-create
		       (lexical-let ((jc jc))
			 (lambda (data)
			   (let* ((group (car data))
				  (group-name (car group))
				  (buddy (car (cdr data))))
			     (jabber-display-roster-entry jc group-name buddy))))
		     (concat
		      (jabber-propertize (concat
					  (plist-get (fsm-get-state-data jc) :username)
					  "@"
					  (plist-get (fsm-get-state-data jc) :server))
					 'face 'jabber-title-medium)
		      "\n__________________________________\n")
		     "__________________________________"))
	      (new-groups '()))
	  (plist-put(fsm-get-state-data jc) :roster-ewoc ewoc)
	  (dolist (group (plist-get (fsm-get-state-data jc) :roster-groups))
	    (let* ((group-name (car group))
		   (buddies (jabber-roster-filter-display
			    (gethash group-name
				     (plist-get (fsm-get-state-data jc) :roster-hash)))))
	      (when (or jabber-roster-show-empty-group
			(> (length buddies) 0))
		(let ((group-node (ewoc-enter-last ewoc (list group nil))))
		  (if (not (find
			    group-name
			    (plist-get (fsm-get-state-data jc) :roster-roll-groups)
			    :test 'string=))
		      (dolist (buddy (reverse buddies))
			(ewoc-enter-after ewoc group-node (list group buddy))))))))
	  (goto-char (point-max))
	  (insert "\n")
	  (put-text-property before-ewoc (point)
			     'jabber-account jc)))

      (goto-char (point-min))
      (setq buffer-read-only t)
      (if (interactive-p)
	  (dolist (hook '(jabber-info-message-hooks jabber-alert-info-message-hooks))
	    (run-hook-with-args hook 'roster (current-buffer) (funcall jabber-alert-info-message-function 'roster (current-buffer)))))
      (when current-line
	;; Go back to previous line - don't use goto-line, since it
	;; sets the mark.
	(goto-char (point-min))
	(forward-line (1- current-line))
	;; ...and go back to previous column
	(move-to-column current-column)))))

(defun jabber-display-roster-entry (jc group-name buddy)
  "Format and insert a roster entry for BUDDY at point.
BUDDY is a JID symbol."
  (if buddy
      (let ((buddy-str (format-spec
			jabber-roster-line-format
			(list
			 (cons ?a (jabber-propertize
				   " "
				   'display (get buddy 'avatar)))
			 (cons ?c (if (get buddy 'connected) "*" " "))
			 (cons ?u (cdr (assoc
					(or
					 (get buddy 'subscription) "none")
					jabber-roster-subscription-display)))
			 (cons ?n (if (> (length (get buddy 'name)) 0)
				      (get buddy 'name)
				    (symbol-name buddy)))
			 (cons ?j (symbol-name buddy))
			 (cons ?r (or (get buddy 'resource) ""))
			 (cons ?s (or
				   (cdr (assoc (get buddy 'show)
					       jabber-presence-strings))
				   (get buddy 'show)))
			 (cons ?S (if (get buddy 'status)
				      (jabber-fix-status (get buddy 'status))
				    ""))
			 ))))
	(add-text-properties 0
			     (length buddy-str)
			     (list
			      'face
			      (or (cdr (assoc (get buddy 'show) jabber-presence-faces))
				  'jabber-roster-user-online)
			      ;;'mouse-face
			      ;;(cons 'background-color "light grey")
			      'help-echo
			      (symbol-name buddy)
			      'jabber-jid
			      (symbol-name buddy)
			      'jabber-account
			      jc)
			     buddy-str)
	(insert buddy-str)

	(when (or (eq jabber-show-resources 'always)
		  (and (eq jabber-show-resources 'sometimes)
		       (> (jabber-count-connected-resources buddy) 1)))
	  (dolist (resource (get buddy 'resources))
	    (when (plist-get (cdr resource) 'connected)
	      (let ((resource-str (format-spec jabber-resource-line-format
					       (list
						(cons ?c "*")
						(cons ?n (if (>
							      (length
							       (get buddy 'name)) 0)
							     (get buddy 'name)
							   (symbol-name buddy)))
						(cons ?j (symbol-name buddy))
						(cons ?r (if (>
							      (length
							       (car resource)) 0)
							     (car resource)
							   "empty"))
						(cons ?s (or
							  (cdr (assoc
								(plist-get
								 (cdr resource) 'show)
								jabber-presence-strings))
							  (plist-get
							   (cdr resource) 'show)))
						(cons ?S (if (plist-get
							      (cdr resource) 'status)
							     (jabber-fix-status
							      (plist-get (cdr resource)
									 'status))
							   ""))
						(cons ?p (number-to-string
							  (plist-get (cdr resource)
								     'priority)))))))
		(add-text-properties 0
				     (length resource-str)
				     (list
				      'face
				      (or (cdr (assoc (plist-get
						       (cdr resource)
						       'show)
						      jabber-presence-faces))
					  'jabber-roster-user-online)
				      'jabber-jid
				      (format "%s/%s" (symbol-name buddy) (car resource))
				      'jabber-account
				      jc)
				     resource-str)
		(insert "\n" resource-str))))))
    (let ((group-name (or group-name
			  jabber-roster-default-group-name)))
      (add-text-properties 0
			   (length group-name)
			   (list
			    'face 'jabber-title-small
			    'jabber-group group-name
			    'jabber-account jc)
			   group-name)
      (insert group-name))))

;;;###autoload
(defun jabber-roster-update (jc new-items changed-items deleted-items)
  "Update roster, in memory and on display.
Add NEW-ITEMS, update CHANGED-ITEMS and remove DELETED-ITEMS, all
three being lists of JID symbols."
  (let* ((roster (plist-get (fsm-get-state-data jc) :roster))
	 (hash (plist-get (fsm-get-state-data jc) :roster-hash))
	 (ewoc (plist-get (fsm-get-state-data jc) :roster-ewoc))
	 (all-groups (plist-get (fsm-get-state-data jc) :roster-groups))
	 (terminator
	  (lambda (deleted-items)
	    (dolist (delete-this deleted-items)
	      (let ((groups (get delete-this 'groups))
		    (terminator
		     (lambda (g)
		       (let*
			   ((group (or g jabber-roster-default-group-name))
			    (buddies (gethash group hash)))
			 (when (not buddies)
			   (setq new-groups (append new-groups (list group))))
			 (puthash group
				  (delq delete-this buddies)
				  hash)))))
		(if groups
		    (dolist (group groups)
		      (terminator group))
		  (terminator groups)))))))

    ;; fix a old-roster
    (dolist (delete-this deleted-items)
      (setq roster (delq delete-this roster)))
    (setq roster (append new-items roster))
    (plist-put (fsm-get-state-data jc) :roster roster)

    ;; update a hash-roster
    (if (not hash)
	(jabber-roster-prepare-roster jc)

      (when jabber-roster-debug
	(message "update hash-based roster"))

      ;; delete items
      (dolist (delete-this (append deleted-items changed-items))
	(let ((jid (symbol-name delete-this)))
	  (when jabber-roster-debug
	    (message (concat "delete jid: " jid)))
	  (dolist (group (mapcar (lambda (g) (car g)) all-groups))
	    (when jabber-roster-debug
	      (message (concat "try to delete jid: " jid " from group " group)))
	    (puthash group
		     (delq delete-this (gethash group hash))
		     hash))))

      ;; insert changed-items
      (dolist (insert-this (append changed-items new-items))
	(let ((jid (symbol-name insert-this)))
	  (when jabber-roster-debug
	    (message (concat "insert jid: " jid)))
	  (dolist (group (or (get insert-this 'groups)
			     (list jabber-roster-default-group-name)))
	    (when jabber-roster-debug
	      (message (concat "insert jid: " jid " to group " group)))
	    (puthash group
		     (append (gethash group hash)
			     (list insert-this))
		     hash)
	    (setq all-groups (append all-groups (list (list group)))))))

      
      (when jabber-roster-debug
	(message "remove duplicates from new group"))
      (setq all-groups (sort
			(remove-duplicates all-groups
					   :test (lambda (g1 g2)
						   (let ((g1-name (car g1))
							 (g2-name (car g2)))
						     (string= g1-name
							      g2-name))))
			(lambda (g1 g2)
			  (let ((g1-name (car g1))
				(g2-name (car g2)))
			    (string< g1-name
				     g2-name)))))

      (plist-put (fsm-get-state-data jc) :roster-groups all-groups))


    (when jabber-roster-debug
      (message "re display roster"))

    ;; recreate roster buffer
    (jabber-display-roster)))

(defalias 'jabber-presence-update-roster 'ignore)
;;jabber-presence-update-roster is not needed anymore.
;;Its work is done in `jabber-process-presence'."
(make-obsolete 'jabber-presence-update-roster 'ignore)

(defun jabber-next-property (&optional prev)
  "Return position of next property appearence or nil if there is none.
If optional PREV is non-nil, return position of previous property appearence."
  (let ((pos (point))
        (found nil)
        (nextprev (if prev 'previous-single-property-change
                    'next-single-property-change)))
    (while (not found)
      (setq pos
            (let ((jid (funcall nextprev pos 'jabber-jid))
                  (group (funcall nextprev pos 'jabber-group)))
              (cond
               ((not jid) group)
               ((not group) jid)
               (t (funcall (if prev 'max 'min) jid group)))))
      (if (not pos)
          (setq found t)
        (setq found (or (get-text-property pos 'jabber-jid)
                        (get-text-property pos 'jabber-group)))))
    pos))

(defun jabber-go-to-next-roster-item ()
  "Move the cursor to the next jid/group in the buffer"
  (interactive)
  (let* ((next (jabber-next-property))
         (next (if (not next)
                   (progn (goto-char (point-min))
                          (jabber-next-property)) next)))
    (if next (goto-char next)
      (goto-char (point-min)))))

(defun jabber-go-to-previous-roster-item ()
  "Move the cursor to the previous jid/group in the buffer"
  (interactive)
  (let* ((previous (jabber-next-property 'prev))
         (previous (if (not previous)
                       (progn (goto-char (point-max))
                              (jabber-next-property 'prev)) previous)))
    (if previous (goto-char previous)
      (goto-char (point-max)))))

(defun jabber-roster-restore-groups (jc)
  "Restore roster's groups rolling state from private storage"
  (interactive (list (jabber-read-account)))
  (jabber-private-get jc 'roster "emacs-jabber"
                      'jabber-roster-restore-groups-1 'ignore))

(defun jabber-roster-restore-groups-1 (jc xml-data)
  "Parse roster groups and restore rolling state"
  (when (string= (jabber-xml-get-xmlns xml-data) "emacs-jabber")
    (let* ((data (car (last xml-data)))
           (groups (if (stringp data) (split-string data "\n") nil)))
      (dolist (group groups)
        (jabber-roster-roll-group jc group t)))))

(defun jabber-roster-save-groups ()
  "Save roster's groups rolling state in private storage"
  (interactive)
  (dolist (jc jabber-connections)
    (let* ((groups (plist-get (fsm-get-state-data jc) :roster-roll-groups))
           (roll-groups
            (if groups
                (mapconcat (lambda (a) (substring-no-properties a)) groups "\n")
              "")))
      (jabber-private-set jc
                          `(roster ((xmlns . "emacs-jabber"))
                                   ,roll-groups)
                          'jabber-report-success "Roster groups saved"
                          'jabber-report-success "Failed to save roster groups"))))

(provide 'jabber-roster)

;;; arch-tag: 096af063-0526-4dd2-90fd-bc6b5ba07d32