wl/wl-thread.el

   1 ;;; wl-thread.el -- Thread display modules for Wanderlust.
   2
   3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4 ;; Copyright (C) 1998,1999,2000 Masahiro MURATA  <muse@ba2.so-net.ne.jp>
   5
   6 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   7 ;;      Masahiro MURATA  <muse@ba2.so-net.ne.jp>
   8 ;; Keywords: mail, net news
   9
  10 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
  11
  12 ;; This program is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16 ;;
  17 ;; This program is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21 ;;
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  25 ;; Boston, MA 02111-1307, USA.
  26 ;;
  27
  28 ;;; Commentary:
  29 ;;
  30
  31 ;;; Code:
  32 ;;
  33
  34 (require 'wl-summary)
  35 (require 'wl-highlight)
  36 (eval-when-compile (require 'cl))
  37
  38 ;; buffer local variables.
  39 ;;(defvar wl-thread-top-entity '(nil t nil nil)) ; top entity
  40 (defvar wl-thread-tops nil)           ; top number list (number)
  41 (defvar wl-thread-entities nil)
  42 (defvar wl-thread-entity-list nil)    ; entity list
  43 (defvar wl-thread-entity-hashtb nil)  ; obarray
  44 (defvar wl-thread-indent-regexp nil)
  45
  46 (make-variable-buffer-local 'wl-thread-entity-hashtb)
  47 (make-variable-buffer-local 'wl-thread-entities)     ; ".wl-thread-entity"
  48 (make-variable-buffer-local 'wl-thread-entity-list)  ; ".wl-thread-entity-list"
  49 (make-variable-buffer-local 'wl-thread-entity-cur)
  50 (make-variable-buffer-local 'wl-thread-indent-regexp)
  51
  52 ;;; global flag
  53 (defvar wl-thread-insert-force-opened nil)
  54
  55 ;;;;;; each entity is (number opened-or-not children parent) ;;;;;;;
  56
  57 (defun wl-thread-resume-entity (fld)
  58   (let (entities top-list)
  59     (setq entities (wl-summary-load-file-object
  60                     (expand-file-name wl-thread-entity-file
  61                                       (elmo-msgdb-expand-path fld))))
  62     (setq top-list
  63           (wl-summary-load-file-object
  64            (expand-file-name wl-thread-entity-list-file
  65                              (elmo-msgdb-expand-path fld))))
  66     (message "Resuming thread structure...")
  67     ;; set obarray value.
  68     (setq wl-thread-entity-hashtb (elmo-make-hash (* (length entities) 2)))
  69     ;; set buffer local variables.
  70     (setq wl-thread-entities entities)
  71     (setq wl-thread-entity-list top-list)
  72     (while entities
  73       (elmo-set-hash-val (format "#%d" (car (car entities))) (car entities)
  74                          wl-thread-entity-hashtb)
  75       (setq entities (cdr entities)))
  76     (wl-thread-make-number-list)
  77     (message "Resuming thread structure...done")))
  78
  79 (defun wl-thread-make-number-list ()
  80   "Make `wl-summary-buffer-number-list', a list of message numbers."
  81   (let* ((node (wl-thread-get-entity (car wl-thread-entity-list)))
  82          (children (wl-thread-entity-get-children node))
  83          parent sibling)
  84     (setq wl-summary-buffer-number-list (list (car wl-thread-entity-list)))
  85     (while children
  86       (wl-thread-entity-make-number-list-from-children
  87        (wl-thread-get-entity (car children)))
  88       (setq children (cdr children)))
  89     (while node
  90       (setq parent (wl-thread-entity-get-parent-entity node)
  91             sibling (wl-thread-entity-get-younger-brothers
  92                      node parent))
  93       (while sibling
  94         (wl-thread-entity-make-number-list-from-children
  95          (wl-thread-get-entity (car sibling)))
  96         (setq sibling (cdr sibling)))
  97       (setq node parent))
  98     (setq wl-summary-buffer-number-list (nreverse
  99                                          wl-summary-buffer-number-list))))
 100
 101 (defun wl-thread-entity-make-number-list-from-children (entity)
 102   (let ((msgs (list (car entity)))
 103         msgs-stack children)
 104     (while msgs
 105       (setq wl-summary-buffer-number-list (cons (car entity)
 106                                         wl-summary-buffer-number-list))
 107       (setq msgs (cdr msgs))
 108       (setq children (wl-thread-entity-get-children entity))
 109       (if children
 110           (progn
 111             (wl-push msgs msgs-stack)
 112             (setq msgs children))
 113         (unless msgs
 114           (while (and (null msgs) msgs-stack)
 115             (setq msgs (wl-pop msgs-stack)))))
 116       (setq entity (wl-thread-get-entity (car msgs))))))
 117
 118 (defun wl-thread-save-entity (dir)
 119   (wl-thread-save-entities dir)
 120   (wl-thread-save-top-list dir))
 121
 122 (defun wl-thread-save-top-list (dir)
 123   (let ((top-file (expand-file-name wl-thread-entity-list-file dir))
 124         (entity wl-thread-entity-list)
 125         (tmp-buffer (get-buffer-create " *wl-thread-save-top-list*")))
 126     (save-excursion
 127       (set-buffer tmp-buffer)
 128       (erase-buffer)
 129       (when (file-writable-p top-file)
 130         (prin1 entity tmp-buffer)
 131         (princ "\n" tmp-buffer)
 132         (write-region (point-min) (point-max) top-file nil 'no-msg)
 133         (kill-buffer tmp-buffer)))))
 134
 135 (defun wl-thread-save-entities (dir)
 136   (let ((top-file (expand-file-name wl-thread-entity-file dir))
 137         (entities wl-thread-entities)
 138         (tmp-buffer (get-buffer-create " *wl-thread-save-entities*")))
 139     (save-excursion
 140       (set-buffer tmp-buffer)
 141       (erase-buffer)
 142       (when (file-writable-p top-file)
 143         (prin1 entities tmp-buffer)
 144         (princ "\n" tmp-buffer)
 145         (write-region (point-min) (point-max) top-file nil 'no-msg)
 146         (kill-buffer tmp-buffer)))))
 147
 148 (defsubst wl-thread-entity-get-number (entity)
 149   (nth 0 entity))
 150 (defsubst wl-thread-entity-get-opened (entity)
 151   (nth 1 entity))
 152 (defsubst wl-thread-entity-get-children (entity)
 153   (nth 2 entity))
 154 (defsubst wl-thread-entity-get-parent (entity)
 155   (nth 3 entity))
 156 (defsubst wl-thread-entity-get-linked (entity)
 157   (nth 4 entity))
 158
 159 (defsubst wl-thread-create-entity (num parent &optional opened linked)
 160   (list num (or opened wl-thread-insert-opened) nil parent linked))
 161
 162 (defsubst wl-thread-get-entity (num)
 163   (and num
 164        (elmo-get-hash-val (format "#%d" num) wl-thread-entity-hashtb)))
 165
 166 (defsubst wl-thread-entity-set-parent (entity parent)
 167   (setcar (cdddr entity) parent)
 168   entity)
 169
 170 (defsubst wl-thread-entity-set-children (entity children)
 171   (setcar (cddr entity) children))
 172
 173 (defsubst wl-thread-entity-set-linked (entity linked)
 174   (if (cddddr entity)
 175       (setcar (cddddr entity) linked)
 176     (nconc entity (list linked)))
 177   entity)
 178
 179 (defsubst wl-thread-reparent-children (children parent)
 180   (while children
 181     (wl-thread-entity-set-parent
 182      (wl-thread-get-entity (car children)) parent)
 183     (wl-thread-entity-set-linked
 184      (wl-thread-get-entity (car children)) t)
 185     (setq children (cdr children))))
 186
 187 (defsubst wl-thread-entity-insert-as-top (entity)
 188   (when (and entity
 189              (car entity))
 190     (wl-append wl-thread-entity-list (list (car entity)))
 191     (setq wl-thread-entities (cons entity wl-thread-entities))
 192     (setq wl-summary-buffer-number-list
 193           (nconc wl-summary-buffer-number-list (list (car entity))))
 194     (elmo-set-hash-val (format "#%d" (car entity)) entity
 195                        wl-thread-entity-hashtb)))
 196
 197 (defsubst wl-thread-entity-insert-as-children (to entity)
 198   (let ((children (wl-thread-entity-get-children to))
 199         curp curc)
 200     (setq curp to)
 201     (elmo-list-insert wl-summary-buffer-number-list
 202                       (wl-thread-entity-get-number entity)
 203                       (progn
 204                         (while (setq curc
 205                                      (wl-thread-entity-get-children curp))
 206                           (setq curp (wl-thread-get-entity
 207                                       (nth (- (length curc) 1)
 208                                            curc))))
 209                         (wl-thread-entity-get-number curp)))
 210     (setcar (cddr to) (wl-append children
 211                                  (list (car entity))))
 212     (setq wl-thread-entities (cons entity wl-thread-entities))
 213     (elmo-set-hash-val (format "#%d" (car entity)) entity
 214                        wl-thread-entity-hashtb)))
 215
 216 (defsubst wl-thread-entity-set-opened (entity opened)
 217   (setcar (cdr entity) opened))
 218
 219 (defsubst wl-thread-entity-get-children-num (entity)
 220   (let (children
 221         ret-val msgs-stack
 222         (msgs (list (car entity))))
 223    (while msgs
 224      (setq msgs (cdr msgs))
 225      (setq children (wl-thread-entity-get-children entity))
 226      (if (null children)
 227          (while (and (null msgs) msgs-stack)
 228            (setq msgs (wl-pop msgs-stack)))
 229        (setq ret-val (+ (or ret-val 0) (length children)))
 230        (wl-push msgs msgs-stack)
 231        (setq msgs children))
 232      (setq entity (wl-thread-get-entity (car msgs))))
 233    ret-val))
 234
 235 (defsubst wl-thread-entity-get-descendant (entity)
 236   (let (children
 237         ret-val msgs-stack
 238         (msgs (list (car entity))))
 239    (while msgs
 240      (setq msgs (cdr msgs))
 241      (setq children (wl-thread-entity-get-children entity))
 242      (if (null children)
 243          (while (and (null msgs) msgs-stack)
 244            (setq msgs (wl-pop msgs-stack)))
 245        (setq ret-val (append ret-val (copy-sequence children)))
 246        (wl-push msgs msgs-stack)
 247        (setq msgs children))
 248      (setq entity (wl-thread-get-entity (car msgs))))
 249    ret-val))
 250
 251 (defsubst wl-thread-entity-get-parent-entity (entity)
 252   (wl-thread-get-entity (wl-thread-entity-get-parent entity)))
 253
 254 (defun wl-thread-entity-get-top-entity (entity)
 255   (let ((cur-entity entity)
 256         p-num)
 257     (while (setq p-num (wl-thread-entity-get-parent cur-entity))
 258       (setq cur-entity (wl-thread-get-entity p-num)))
 259     cur-entity))
 260
 261 (defun wl-thread-entity-parent-invisible-p (entity)
 262   "If parent of ENTITY is invisible, the top invisible ancestor entity of
 263 ENTITY is returned."
 264   (let ((cur-entity entity)
 265         ret-val)
 266     (catch 'done
 267       (while (setq cur-entity (wl-thread-entity-get-parent-entity
 268                                cur-entity))
 269         (if (null (wl-thread-entity-get-number cur-entity))
 270             ;; top!!
 271             (progn
 272               ;;(setq ret-val nil)
 273               (throw 'done nil))
 274           (when (not (wl-thread-entity-get-opened cur-entity))
 275             ;; not opened!!
 276             (setq ret-val cur-entity)))))
 277     ;; top of closed entity in the path.
 278     ret-val))
 279
 280 (defun wl-thread-entity-get-nearly-older-brother (entity &optional parent)
 281   (let ((brothers (wl-thread-entity-get-older-brothers entity parent)))
 282     (when brothers
 283       (car (last brothers)))))
 284
 285 (defun wl-thread-entity-get-older-brothers (entity &optional parent)
 286   (let* ((parent (or parent
 287                      (wl-thread-entity-get-parent-entity entity)))
 288          (brothers (wl-thread-entity-get-children parent))
 289          ret-val)
 290     (if parent
 291         brothers
 292       (setq brothers wl-thread-entity-list))
 293     (while (and brothers
 294                 (not (eq (wl-thread-entity-get-number entity)
 295                          (car brothers))))
 296       (wl-append ret-val (list (car brothers)))
 297       (setq brothers (cdr brothers)))
 298     ret-val))
 299
 300 (defun wl-thread-entity-get-younger-brothers (entity &optional parent)
 301   (let* ((parent (or parent
 302                      (wl-thread-entity-get-parent-entity entity)))
 303          (brothers (wl-thread-entity-get-children parent)))
 304     (if parent
 305         (cdr (memq (wl-thread-entity-get-number entity)
 306                    brothers))
 307       ;; top!!
 308       (cdr (memq (car entity) wl-thread-entity-list)))))
 309
 310 (defun wl-thread-jump-to-msg (&optional number)
 311   (interactive)
 312   (let ((num (or number
 313                  (string-to-int
 314                   (read-from-minibuffer "Jump to Message(No.): ")))))
 315     (wl-thread-entity-force-open (wl-thread-get-entity num))
 316     (wl-summary-jump-to-msg num)))
 317
 318 (defun wl-thread-close-all ()
 319   "Close all top threads."
 320   (interactive)
 321   (message "Closing all threads...")
 322   (save-excursion
 323     (let ((entities wl-thread-entity-list)
 324           (cur 0)
 325           (len (length wl-thread-entity-list)))
 326       (while entities
 327         (when (and (wl-thread-entity-get-opened (wl-thread-get-entity
 328                                                  (car entities)))
 329                    (wl-thread-entity-get-children (wl-thread-get-entity
 330                                                    (car entities))))
 331           (wl-summary-jump-to-msg (car entities))
 332           (wl-thread-open-close))
 333         (when (> len elmo-display-progress-threshold)
 334           (setq cur (1+ cur))
 335           (if (or (zerop (% cur 5)) (= cur len))
 336               (elmo-display-progress
 337                'wl-thread-close-all "Closing all threads..."
 338                (/ (* cur 100) len))))
 339         (setq entities (cdr entities)))))
 340   (message "Closing all threads...done"))
 341
 342 (defun wl-thread-open-all ()
 343   "Open all threads."
 344   (interactive)
 345   (message "Opening all threads...")
 346   (save-excursion
 347     (goto-char (point-min))
 348     (let ((len (count-lines (point-min) (point-max)))
 349           (cur 0)
 350           entity)
 351       (while (not (eobp))
 352         (unless (wl-thread-entity-get-opened
 353                  (setq entity (wl-thread-get-entity
 354                                (wl-summary-message-number))))
 355           (wl-thread-entity-force-open entity))
 356         (wl-thread-goto-bottom-of-sub-thread)
 357         (when (> len elmo-display-progress-threshold)
 358           (setq cur (1+ cur))
 359           (elmo-display-progress
 360            'wl-thread-open-all "Opening all threads..."
 361            (/ (* cur 100) len)))))
 362     ;; Make sure to be 100%.
 363     (elmo-display-progress
 364      'wl-thread-open-all "Opening all threads..."
 365      100))
 366   (message "Opening all threads...done"))
 367
 368 (defun wl-thread-open-all-unread ()
 369   (interactive)
 370   (let ((mark-alist (elmo-msgdb-get-mark-alist wl-summary-buffer-msgdb))
 371         mark)
 372     (while mark-alist
 373       (if (setq mark (nth 1 (car mark-alist)))
 374           (if (or (string= mark wl-summary-unread-uncached-mark)
 375                   (string= mark wl-summary-unread-cached-mark)
 376                   (string= mark wl-summary-new-mark)
 377                   (string= mark wl-summary-important-mark))
 378               (wl-thread-entity-force-open (wl-thread-get-entity
 379                                             (nth 0 (car mark-alist))))))
 380       (setq mark-alist (cdr mark-alist)))))
 381
 382 (defsubst wl-thread-maybe-get-children-num (msg)
 383   (let ((entity (wl-thread-get-entity msg)))
 384     (if (not (wl-thread-entity-get-opened entity))
 385         (wl-thread-entity-get-children-num entity))))
 386
 387 (defsubst wl-thread-update-line-on-buffer-sub (entity msg &optional parent-msg)
 388   (let* ((entity (or entity (wl-thread-get-entity msg)))
 389          (parent-msg (or parent-msg (wl-thread-entity-get-parent entity)))
 390          (overview (elmo-msgdb-get-overview wl-summary-buffer-msgdb))
 391          (mark-alist (elmo-msgdb-get-mark-alist wl-summary-buffer-msgdb))
 392          (buffer-read-only nil)
 393          (inhibit-read-only t)
 394          overview-entity temp-mark summary-line invisible-top dest-pair)
 395     (if (wl-thread-delete-line-from-buffer msg)
 396         (progn
 397           (cond
 398            ((memq msg wl-summary-buffer-delete-list)
 399             (setq temp-mark "D"))
 400            ((memq msg wl-summary-buffer-target-mark-list)
 401             (setq temp-mark "*"))
 402            ((setq dest-pair (assq msg wl-summary-buffer-refile-list))
 403             (setq temp-mark "o"))
 404            ((setq dest-pair (assq msg wl-summary-buffer-copy-list))
 405             (setq temp-mark "O"))
 406            (t (setq temp-mark (wl-summary-get-score-mark msg))))
 407           (when (setq overview-entity
 408                       (elmo-msgdb-overview-get-entity
 409                        msg wl-summary-buffer-msgdb))
 410             (setq summary-line
 411                   (wl-summary-overview-create-summary-line
 412                    msg
 413                    overview-entity
 414                    (elmo-msgdb-overview-get-entity
 415                     parent-msg wl-summary-buffer-msgdb)
 416                    nil
 417                    mark-alist
 418                    (if wl-thread-insert-force-opened
 419                        nil
 420                      (wl-thread-maybe-get-children-num msg))
 421                    temp-mark entity))
 422             (save-excursion
 423               (wl-summary-insert-line summary-line))
 424             (if dest-pair
 425                 (wl-summary-print-destination (car dest-pair)
 426                                               (cdr dest-pair)))))
 427       ;; insert thread (moving thread)
 428       (if (not (setq invisible-top
 429                      (wl-thread-entity-parent-invisible-p entity)))
 430           (wl-summary-update-thread
 431            (elmo-msgdb-overview-get-entity msg wl-summary-buffer-msgdb)
 432            overview
 433            mark-alist
 434            entity
 435            (and parent-msg
 436                 (elmo-msgdb-overview-get-entity
 437                  parent-msg wl-summary-buffer-msgdb)))
 438         ;; currently invisible.. update closed line.
 439         (wl-thread-update-children-number invisible-top)))))
 440
 441 (defun wl-thread-update-line-on-buffer (&optional msg parent-msg updates)
 442   (interactive)
 443   (let ((msgs (list (or msg (wl-summary-message-number))))
 444         entity children msgs-stack)
 445    (while msgs
 446     (setq msg (wl-pop msgs))
 447     (setq updates (and updates (delete msg updates)))
 448     (setq entity (wl-thread-get-entity msg))
 449     (wl-thread-update-line-on-buffer-sub entity msg parent-msg)
 450     ;;
 451     (setq children (wl-thread-entity-get-children entity))
 452     (if children
 453         ;; update children
 454         (when (wl-thread-entity-get-opened entity)
 455           (wl-push msgs msgs-stack)
 456           (setq parent-msg msg
 457                 msgs children))
 458       (unless msgs
 459         (while (and (null msgs) msgs-stack)
 460           (setq msgs (wl-pop msgs-stack)))
 461         (when msgs
 462           (setq parent-msg
 463                 (wl-thread-entity-get-number
 464                  (wl-thread-entity-get-parent-entity
 465                   (wl-thread-get-entity (car msgs)))))))))
 466    updates))
 467
 468 (defun wl-thread-update-line-msgs (msgs &optional no-msg)
 469   (wl-delete-all-overlays)
 470   (let ((i 0)
 471         (updates msgs)
 472         len)
 473 ;;; (while msgs
 474 ;;;   (setq updates
 475 ;;;         (append updates
 476 ;;;                 (wl-thread-get-children-msgs (car msgs))))
 477 ;;;   (setq msgs (cdr msgs)))
 478 ;;; (setq updates (elmo-uniq-list updates))
 479     (setq len (length updates))
 480     (while updates
 481       (wl-thread-update-line-on-buffer-sub nil (car updates))
 482       (setq updates (cdr updates))
 483       (when (and (not no-msg)
 484                  (> len elmo-display-progress-threshold))
 485         (setq i (1+ i))
 486         (if (or (zerop (% i 5)) (= i len))
 487             (elmo-display-progress
 488              'wl-thread-update-line-msgs "Updating deleted thread..."
 489              (/ (* i 100) len)))))))
 490
 491 (defun wl-thread-delete-line-from-buffer (msg)
 492   "Simply delete msg line."
 493   (let (beg)
 494     (if (wl-summary-jump-to-msg msg)
 495         (progn
 496           (setq beg (point))
 497           (forward-line 1)
 498           (delete-region beg (point))
 499           t)
 500       nil)))
 501
 502 (defun wl-thread-cleanup-symbols (msgs)
 503   (let (entity)
 504     (while msgs
 505       (when (setq entity (wl-thread-get-entity (car msgs)))
 506         ;; delete entity.
 507         (setq wl-thread-entities (delq entity wl-thread-entities))
 508         ;; free symbol.
 509         (elmo-clear-hash-val (format "#%d" (car msgs))
 510                              wl-thread-entity-hashtb))
 511       (setq msgs (cdr msgs)))))
 512
 513 (defun wl-thread-get-exist-children (msg)
 514   (let ((msgs (list msg))
 515         msgs-stack children
 516         entity ret-val)
 517     (while msgs
 518       (setq children (wl-thread-entity-get-children
 519                       (setq entity (wl-thread-get-entity (car msgs)))))
 520       (when (elmo-msgdb-overview-get-entity (car msgs) wl-summary-buffer-msgdb)
 521         (wl-append ret-val (list (car msgs)))
 522         (setq children nil))
 523       (setq msgs (cdr msgs))
 524       (if (null children)
 525           (while (and (null msgs) msgs-stack)
 526             (setq msgs (wl-pop msgs-stack)))
 527         (wl-push msgs msgs-stack)
 528         (setq msgs children)))
 529     ret-val))
 530
 531 (defun wl-thread-delete-message (msg &optional deep update)
 532   "Delete MSG from entity and buffer."
 533   (save-excursion
 534     (let* ((entity (wl-thread-get-entity msg))
 535            children older-brothers younger-brothers top-child ;;grandchildren
 536            top-entity parent update-msgs beg invisible-top)
 537       (when entity
 538         (setq parent (wl-thread-entity-get-parent-entity entity))
 539         (if parent
 540             (progn
 541 ;;; has parent.
 542 ;;;           (setq brothers (wl-thread-entity-get-children parent))
 543               (setq older-brothers (wl-thread-entity-get-older-brothers
 544                                     entity parent))
 545               (setq younger-brothers (wl-thread-entity-get-younger-brothers
 546                                       entity parent))
 547               ;;
 548               (unless deep
 549                 (setq children (wl-thread-entity-get-children entity))
 550                 (wl-thread-reparent-children
 551                  children (wl-thread-entity-get-number parent))
 552                 (setq update-msgs
 553                       (apply (function nconc)
 554                              update-msgs
 555                              (mapcar
 556                               (function
 557                                (lambda (message)
 558                                  (wl-thread-get-children-msgs message t)))
 559                               children))))
 560               (wl-thread-entity-set-children
 561                parent (append older-brothers children younger-brothers))
 562               ;; If chidren and younger-brothers not exists,
 563               ;; update nearly older brother.
 564               (when (and older-brothers
 565                          (not younger-brothers)
 566                          (not children))
 567                 (wl-append
 568                  update-msgs
 569                  (wl-thread-get-children-msgs (car (last older-brothers))))))
 570
 571           ;; top...oldest child becomes top.
 572           (unless deep
 573             (setq children (wl-thread-entity-get-children entity))
 574             (when children
 575               (setq top-child (car children)
 576                     children (cdr children))
 577               (setq top-entity (wl-thread-get-entity top-child))
 578               (wl-thread-entity-set-parent top-entity nil)
 579               (wl-thread-entity-set-linked top-entity nil)
 580               (wl-append update-msgs
 581                          (wl-thread-get-children-msgs top-child t)))
 582             (when children
 583               (wl-thread-entity-set-children
 584                top-entity
 585                (append
 586                 (wl-thread-entity-get-children top-entity)
 587                 children))
 588               (wl-thread-reparent-children children top-child)
 589               (wl-append update-msgs children)))
 590           ;; delete myself from top list.
 591           (setq wl-summary-buffer-number-list
 592                 (delq msg wl-summary-buffer-number-list))
 593           (setq older-brothers (wl-thread-entity-get-older-brothers
 594                                 entity nil))
 595           (setq younger-brothers (wl-thread-entity-get-younger-brothers
 596                                   entity nil))
 597           (setq wl-thread-entity-list
 598                 (append (append older-brothers
 599                                 (and top-child (list top-child)))
 600                         younger-brothers))))
 601
 602       (if deep
 603           ;; delete thread on buffer
 604           (when (wl-summary-jump-to-msg msg)
 605             (setq beg (point))
 606             (wl-thread-goto-bottom-of-sub-thread)
 607             (delete-region beg (point)))
 608         ;; delete myself from buffer.
 609         (unless (wl-thread-delete-line-from-buffer msg)
 610           ;; jump to suitable point.
 611           ;; just upon the oldest younger-brother of my top.
 612           (setq invisible-top
 613                 (car (wl-thread-entity-parent-invisible-p entity)))
 614           (if invisible-top
 615               (progn
 616                 (wl-append update-msgs (list invisible-top))
 617                 (wl-summary-jump-to-msg invisible-top))
 618             (goto-char (point-max))))
 619
 620         ;; insert children if thread is closed or delete top.
 621         (when (or top-child
 622                   (not (wl-thread-entity-get-opened entity)))
 623           (let* (next-top insert-msgs ent e grandchildren)
 624             (if top-child
 625                 (progn
 626                   (setq insert-msgs (wl-thread-get-exist-children top-child))
 627                   (setq next-top (car insert-msgs))
 628                   (setq ent (wl-thread-get-entity next-top))
 629                   (when (and
 630                          (wl-thread-entity-get-opened entity) ;; open
 631                          (not (wl-thread-entity-get-opened ent)) ;; close
 632                          (setq grandchildren
 633                                (wl-thread-entity-get-children ent))
 634                          (wl-summary-jump-to-msg next-top))
 635                     (forward-line 1)
 636                     (setq insert-msgs (append (cdr insert-msgs) grandchildren)))
 637                   (when top-entity (wl-thread-entity-set-opened top-entity t))
 638                   (when ent (wl-thread-entity-set-opened ent t)))
 639               (when (not invisible-top)
 640                 (setq insert-msgs (wl-thread-get-exist-children msg))
 641                 ;; First msg always opened, because first msg maybe becomes top.
 642                 (if (setq ent (wl-thread-get-entity (car insert-msgs)))
 643                     (wl-thread-entity-set-opened ent t))))
 644             ;; insert children
 645             (while insert-msgs
 646               ;; if no exists in summary, insert entity.
 647               (when (and (car insert-msgs)
 648                          (not (wl-summary-jump-to-msg (car insert-msgs))))
 649                 (setq ent (wl-thread-get-entity (car insert-msgs)))
 650                 (wl-thread-insert-entity 0 ; no mean now...
 651                                          ent entity nil))
 652               (setq insert-msgs (cdr insert-msgs))))))
 653       (if update
 654           ;; modify buffer.
 655           (while update-msgs
 656             (wl-thread-update-line-on-buffer-sub nil (pop update-msgs)))
 657         ;; don't update buffer
 658         update-msgs)))) ; return value
 659
 660 (defun wl-thread-insert-message (overview-entity overview mark-alist
 661                                  msg parent-msg &optional update linked)
 662   "Insert MSG to the entity.
 663 When optional argument UPDATE is non-nil,
 664 Message is inserted to the summary buffer."
 665   (let ((parent (wl-thread-get-entity parent-msg))
 666         child-entity invisible-top)
 667 ;;; Update the thread view...not implemented yet.
 668 ;;;  (when force-insert
 669 ;;;    (if parent
 670 ;;;       (wl-thread-entity-force-open parent))
 671     (if parent
 672         ;; insert as children.
 673         (wl-thread-entity-insert-as-children
 674          parent
 675          (setq child-entity (wl-thread-create-entity msg (nth 0 parent) nil linked)))
 676       ;; insert as top message.
 677       (wl-thread-entity-insert-as-top
 678        (wl-thread-create-entity msg nil)))
 679     (if update
 680         (if (not (setq invisible-top
 681                        (wl-thread-entity-parent-invisible-p child-entity)))
 682             ;; visible.
 683             (progn
 684               (wl-summary-update-thread
 685                overview-entity
 686                overview
 687                mark-alist
 688                child-entity
 689                (elmo-msgdb-overview-get-entity
 690                 parent-msg wl-summary-buffer-msgdb))
 691               (when parent
 692                 ;; use thread structure.
 693                 (wl-thread-entity-get-nearly-older-brother
 694                  child-entity parent))) ; return value
 695 ;;;             (wl-thread-entity-get-number
 696 ;;;              (wl-thread-entity-get-top-entity parent)))) ; return value;
 697 ;;;           (setq beg (point))
 698 ;;;           (wl-thread-goto-bottom-of-sub-thread)
 699 ;;;           (wl-thread-update-indent-string-region beg (point)))
 700           ;; currently invisible.. update closed line.
 701           (wl-thread-update-children-number invisible-top)
 702           nil))))
 703
 704 (defun wl-thread-get-parent-list (msgs)
 705   (let* ((msgs2 msgs)
 706          myself)
 707     (while msgs2
 708       (setq myself (car msgs2)
 709             msgs2 (cdr msgs2))
 710       (while (not (eq myself (car msgs2)))
 711         (if (wl-thread-descendant-p myself (car msgs2))
 712             (setq msgs (delq (car msgs2) msgs)))
 713         (setq msgs2 (or (cdr msgs2) msgs)))
 714       (setq msgs2 (cdr msgs2)))
 715     msgs))
 716
 717 (defun wl-thread-update-indent-string-thread (top-list)
 718   (let ((top-list (wl-thread-get-parent-list top-list))
 719         beg)
 720     (while top-list
 721       (when (car top-list)
 722         (wl-summary-jump-to-msg (car top-list))
 723         (setq beg (point))
 724         (wl-thread-goto-bottom-of-sub-thread)
 725         (wl-thread-update-indent-string-region beg (point)))
 726       (setq top-list (cdr top-list)))))
 727
 728 (defun wl-thread-update-children-number (entity)
 729   "Update the children number."
 730   (save-excursion
 731     (wl-summary-jump-to-msg (wl-thread-entity-get-number entity))
 732     (beginning-of-line)
 733     (let ((text-prop (get-text-property (point) 'face))
 734           from from-end beg str)
 735       (cond
 736        ((looking-at (concat "^" wl-summary-buffer-number-regexp
 737                             "..../..\(.*\)..:.. ["
 738                             wl-thread-indent-regexp
 739                             "]*[[<]\\+\\([0-9]+\\):"))
 740         (delete-region (match-beginning 1)(match-end 1))
 741         (goto-char (match-beginning 1))
 742         (setq str (format "%s" (wl-thread-entity-get-children-num entity)))
 743         (if wl-summary-highlight
 744             (put-text-property 0 (length str) 'face text-prop str))
 745         (insert str))
 746        ((looking-at (concat "^" wl-summary-buffer-number-regexp
 747                             "..../..\(.*\)..:.. ["
 748                             wl-thread-indent-regexp
 749                             "]*[[<]"))
 750         (goto-char (match-end 0))
 751         (setq beg (current-column))
 752         (setq from-end (save-excursion
 753                          (move-to-column (+ 1 beg wl-from-width))
 754                          (point)))
 755         (setq from (buffer-substring (match-end 0) from-end))
 756         (delete-region (match-end 0) from-end)
 757         (setq str (wl-set-string-width
 758                    (1+ wl-from-width)
 759                    (format
 760                     "+%s:%s"
 761                     (wl-thread-entity-get-children-num
 762                      entity)
 763                     from)))
 764         (if wl-summary-highlight
 765             (put-text-property 0 (length str) 'face text-prop str))
 766         (insert str)
 767         (condition-case nil ; it's dangerous, so ignore error.
 768             (run-hooks 'wl-thread-update-children-number-hook)
 769           (error
 770            (ding)
 771            (message "Error in wl-thread-update-children-number-hook."))))))))
 772
 773 ;;
 774 ;; Thread oriented commands.
 775 ;;
 776 (defun wl-thread-call-region-func (func &optional arg)
 777   (save-excursion
 778     (if arg
 779         (wl-summary-goto-top-of-current-thread)
 780       (beginning-of-line))
 781     (let ((beg (point)))
 782       (wl-thread-goto-bottom-of-sub-thread)
 783       (funcall func beg (point)))))
 784
 785 (defun wl-thread-prefetch (&optional arg)
 786   (interactive "P")
 787   (wl-thread-call-region-func 'wl-summary-prefetch-region arg))
 788
 789 (defun wl-thread-msg-mark-as-important (msg)
 790   "Set mark as important for invisible MSG. Modeline is not changed."
 791   (let* ((msgdb wl-summary-buffer-msgdb)
 792          (mark-alist (elmo-msgdb-get-mark-alist msgdb))
 793          cur-mark)
 794     (setq cur-mark (cadr (assq msg mark-alist)))
 795     (setq mark-alist
 796           (elmo-msgdb-mark-set mark-alist
 797                                msg
 798                                (if (string= cur-mark wl-summary-important-mark)
 799                                    nil
 800                                  wl-summary-important-mark)))
 801     (elmo-msgdb-set-mark-alist msgdb mark-alist)
 802     (wl-summary-set-mark-modified)))
 803
 804 (defun wl-thread-mark-as-read (&optional arg)
 805   (interactive "P")
 806   (wl-thread-call-region-func 'wl-summary-mark-as-read-region arg))
 807
 808 (defun wl-thread-mark-as-unread (&optional arg)
 809   (interactive "P")
 810   (wl-thread-call-region-func 'wl-summary-mark-as-unread-region arg))
 811
 812 (defun wl-thread-mark-as-important (&optional arg)
 813   (interactive "P")
 814   (wl-thread-call-region-func 'wl-summary-mark-as-important-region arg))
 815
 816 (defun wl-thread-copy (&optional arg)
 817   (interactive "P")
 818   (wl-thread-call-region-func 'wl-summary-copy-region arg))
 819
 820 (defun wl-thread-refile (&optional arg)
 821   (interactive "P")
 822   (condition-case err
 823       (progn
 824         (wl-thread-call-region-func 'wl-summary-refile-region arg)
 825         (if arg
 826             (wl-summary-goto-top-of-current-thread))
 827         (wl-thread-goto-bottom-of-sub-thread))
 828     (error
 829      (elmo-display-error err t)
 830      nil)))
 831
 832 (defun wl-thread-delete (&optional arg)
 833   (interactive "P")
 834   (wl-thread-call-region-func 'wl-summary-delete-region arg)
 835   (if arg
 836       (wl-summary-goto-top-of-current-thread))
 837   (if (not wl-summary-move-direction-downward)
 838       (wl-summary-prev)
 839     (wl-thread-goto-bottom-of-sub-thread)
 840     (if wl-summary-buffer-disp-msg
 841         (wl-summary-redisplay))))
 842
 843 (defun wl-thread-target-mark (&optional arg)
 844   (interactive "P")
 845   (wl-thread-call-region-func 'wl-summary-target-mark-region arg))
 846
 847 (defun wl-thread-unmark (&optional arg)
 848   (interactive "P")
 849   (wl-thread-call-region-func 'wl-summary-unmark-region arg))
 850
 851 (defun wl-thread-exec (&optional arg)
 852   (interactive "P")
 853   (wl-thread-call-region-func 'wl-summary-exec-region arg))
 854
 855 (defun wl-thread-save (&optional arg)
 856   (interactive "P")
 857   (wl-thread-call-region-func 'wl-summary-save-region arg))
 858
 859 (defun wl-thread-force-open (&optional msg-num)
 860   "force open current folder"
 861   (if msg-num
 862       (wl-summary-jump-to-msg msg-num))
 863   (let ((wl-thread-insert-force-opened t))
 864     (wl-thread-open-close)))
 865
 866 (defun wl-thread-entity-force-open (entity)
 867   (let ((wl-thread-insert-force-opened t)
 868         notopen)
 869     (if (null (wl-thread-entity-get-parent entity))
 870         ;; top!!
 871         (if (and (not (wl-thread-entity-get-opened entity))
 872                  (wl-thread-entity-get-children entity))
 873             (wl-thread-force-open (wl-thread-entity-get-number entity)))
 874       (if (setq notopen (wl-thread-entity-parent-invisible-p entity))
 875           (wl-thread-force-open (wl-thread-entity-get-number notopen))))))
 876
 877 (defun wl-thread-insert-top ()
 878   (let ((elist wl-thread-entity-list)
 879         (len (length wl-thread-entity-list))
 880         (cur 0))
 881     (wl-delete-all-overlays)
 882     (while elist
 883       (wl-thread-insert-entity
 884        0
 885        (wl-thread-get-entity (car elist))
 886        nil
 887        len)
 888       (setq elist (cdr elist))
 889       (when (> len elmo-display-progress-threshold)
 890         (setq cur (1+ cur))
 891         (if (or (zerop (% cur 2)) (= cur len))
 892             (elmo-display-progress
 893              'wl-thread-insert-top "Inserting thread..."
 894              (/ (* cur 100) len)))))))
 895
 896 (defsubst wl-thread-insert-entity-sub (indent entity parent-entity all)
 897   (let ((mark-alist (elmo-msgdb-get-mark-alist wl-summary-buffer-msgdb))
 898         msg-num
 899         overview-entity
 900         temp-mark
 901         summary-line)
 902     (when (setq msg-num (wl-thread-entity-get-number entity))
 903       (unless all ; all...means no temp-mark.
 904         (cond ((memq msg-num wl-summary-buffer-delete-list)
 905                (setq temp-mark "D"))
 906               ((memq msg-num wl-summary-buffer-target-mark-list)
 907                (setq temp-mark "*"))
 908               ((assq msg-num wl-summary-buffer-refile-list)
 909                (setq temp-mark "o"))
 910               ((assq msg-num wl-summary-buffer-copy-list)
 911                (setq temp-mark "O"))))
 912       (unless temp-mark
 913         (setq temp-mark (wl-summary-get-score-mark msg-num)))
 914       (setq overview-entity
 915             (elmo-msgdb-overview-get-entity
 916              (nth 0 entity) wl-summary-buffer-msgdb))
 917 ;;;   (wl-delete-all-overlays)
 918       (when overview-entity
 919         (setq summary-line
 920               (wl-summary-overview-create-summary-line
 921                msg-num
 922                overview-entity
 923                (elmo-msgdb-overview-get-entity
 924                 (nth 0 parent-entity) wl-summary-buffer-msgdb)
 925                (1+ indent)
 926                mark-alist
 927                (if wl-thread-insert-force-opened
 928                    nil
 929                  (wl-thread-maybe-get-children-num msg-num))
 930                temp-mark entity))
 931         (wl-summary-insert-line summary-line)))))
 932
 933 (defun wl-thread-insert-entity (indent entity parent-entity all)
 934   "Insert thread entity in current buffer."
 935   (let ((msgs (list (car entity)))
 936         children msgs-stack)
 937     (while msgs
 938       (wl-thread-insert-entity-sub indent entity parent-entity all)
 939       (setq msgs (cdr msgs))
 940       (setq children (nth 2 entity))
 941       (if children
 942           ;; insert children
 943           (when (or wl-thread-insert-force-opened
 944                     (wl-thread-entity-get-opened entity))
 945             (wl-thread-entity-set-opened entity t)
 946             (wl-push msgs msgs-stack)
 947             (setq msgs children
 948                   indent (1+ indent)
 949                   parent-entity entity)))
 950       (unless msgs
 951         (while (and (null msgs) msgs-stack)
 952           (setq msgs (wl-pop msgs-stack))
 953           (setq indent (1- indent)))
 954         (when msgs
 955           (setq entity (wl-thread-get-entity (car msgs)))
 956           (setq parent-entity (wl-thread-entity-get-parent-entity entity))))
 957       (setq entity (wl-thread-get-entity (car msgs))))))
 958
 959 (defun wl-thread-descendant-p (mynumber number)
 960   (let ((cur (wl-thread-get-entity number))
 961         num)
 962     (catch 'done
 963       (while cur
 964         (setq cur (wl-thread-entity-get-parent-entity cur))
 965         (if (null (setq num (wl-thread-entity-get-number cur))) ; top!
 966             (throw 'done nil))
 967         (if (and num
 968                  (eq mynumber (wl-thread-entity-get-number cur)))
 969             (throw 'done t)))
 970       nil)))
 971
 972 ;; (defun wl-thread-goto-bottom-of-sub-thread ()
 973 ;;   (interactive)
 974 ;;   (let ((depth (wl-thread-get-depth-of-current-line)))
 975 ;;     (forward-line 1)
 976 ;;     (while (and (not (eobp))
 977 ;;              (> (wl-thread-get-depth-of-current-line)
 978 ;;                 depth))
 979 ;;       (forward-line 1))
 980 ;;     (beginning-of-line)))
 981
 982 (defun wl-thread-goto-bottom-of-sub-thread (&optional msg)
 983   (interactive)
 984   (let ((mynumber (or msg (wl-summary-message-number))))
 985     (forward-line 1)
 986     (while (wl-thread-descendant-p mynumber (wl-summary-message-number))
 987       (forward-line 1))
 988     (beginning-of-line)))
 989
 990 (defun wl-thread-remove-destination-region (beg end)
 991   (save-excursion
 992     (save-restriction
 993       (narrow-to-region beg end)
 994       (goto-char (point-min))
 995       (while (not (eobp))
 996         (let ((num (wl-summary-message-number)))
 997           (if (assq num wl-summary-buffer-refile-list)
 998               (wl-summary-remove-destination)))
 999         (forward-line 1)))))
1000
1001 (defun wl-thread-print-destination-region (beg end)
1002   (if (or wl-summary-buffer-refile-list
1003           wl-summary-buffer-copy-list)
1004       (save-excursion
1005         (save-restriction
1006           (narrow-to-region beg end)
1007           (goto-char (point-min))
1008           (while (not (eobp))
1009             (let ((num (wl-summary-message-number))
1010                   pair)
1011               (if (or (setq pair (assq num wl-summary-buffer-refile-list))
1012                       (setq pair (assq num wl-summary-buffer-copy-list)))
1013                   (wl-summary-print-destination (car pair) (cdr pair))))
1014             (forward-line 1))))))
1015
1016 (defsubst wl-thread-get-children-msgs (msg &optional visible-only)
1017   (let ((msgs (list msg))
1018         msgs-stack children
1019         entity ret-val)
1020     (while msgs
1021       (wl-append ret-val (list (car msgs)))
1022       (setq children (wl-thread-entity-get-children
1023                       (setq entity (wl-thread-get-entity (car msgs)))))
1024       (if (and visible-only
1025                (not (wl-thread-entity-get-opened entity)))
1026           (setq children nil))
1027       (setq msgs (cdr msgs))
1028       (if (null children)
1029           (while (and (null msgs) msgs-stack)
1030             (setq msgs (wl-pop msgs-stack)))
1031         (wl-push msgs msgs-stack)
1032         (setq msgs children)))
1033     ret-val))
1034
1035 (defun wl-thread-get-children-msgs-uncached (msg &optional uncached-marks)
1036   (let ((children-msgs (wl-thread-get-children-msgs msg))
1037         (mark-alist (elmo-msgdb-get-mark-alist wl-summary-buffer-msgdb))
1038         (number-alist (elmo-msgdb-get-number-alist wl-summary-buffer-msgdb))
1039         mark
1040         uncached-list)
1041     (while children-msgs
1042       (if (and (not (eq msg (car children-msgs))) ; except itself
1043                (or (and uncached-marks
1044                         (setq mark (cadr (assq (car children-msgs)
1045                                                mark-alist)))
1046                         (member mark uncached-marks))
1047                    (and (not uncached-marks)
1048                         (null (elmo-cache-exists-p
1049                                (cdr (assq (car children-msgs)
1050                                           number-alist)))))))
1051           (wl-append uncached-list (list (car children-msgs))))
1052       (setq children-msgs (cdr children-msgs)))
1053     uncached-list))
1054
1055 (defun wl-thread-get-children-msgs-with-mark (msg mark)
1056   (let ((children-msgs (wl-thread-get-children-msgs msg))
1057         (check-func (cond ((string= mark "o")
1058                            'wl-summary-msg-marked-as-refiled)
1059                           ((string= mark "O")
1060                            'wl-summary-msg-marked-as-copied)
1061                           ((string= mark "D")
1062                            'wl-summary-msg-marked-as-deleted)
1063                           ((string= mark "*")
1064                            'wl-summary-msg-marked-as-target)))
1065         ret-val)
1066     (while children-msgs
1067       (if (funcall check-func (car children-msgs))
1068           (wl-append ret-val (list (car children-msgs))))
1069       (setq children-msgs (cdr children-msgs)))
1070     ret-val))
1071
1072 (defun wl-thread-close (entity)
1073   (let (depth beg)
1074     (wl-thread-entity-set-opened entity nil)
1075     (setq depth (wl-thread-get-depth-of-current-line))
1076     (beginning-of-line)
1077     (setq beg (point))
1078     (wl-thread-goto-bottom-of-sub-thread)
1079     (wl-thread-remove-destination-region beg
1080                                          (point))
1081     (forward-char -1)   ;; needed for mouse-face.
1082     (delete-region beg (point))
1083     (wl-thread-insert-entity (- depth 1)
1084                              entity
1085                              (wl-thread-get-entity
1086                               (nth 3 entity))
1087                              nil)
1088     (delete-char 1) ; delete '\n'
1089     (wl-thread-print-destination-region beg (point))))
1090
1091 (defun wl-thread-open (entity)
1092   (let (depth beg)
1093     (beginning-of-line)
1094     (setq beg (point))
1095     (setq depth (wl-thread-get-depth-of-current-line))
1096     (end-of-line)
1097     (delete-region beg (point))
1098     (wl-thread-entity-set-opened entity t)
1099     (wl-thread-insert-entity depth ;(- depth 1)
1100                              entity
1101                              (wl-thread-get-entity
1102                               (nth 3 entity)) nil)
1103     (delete-char 1) ; delete '\n'
1104     (wl-thread-print-destination-region beg (point))))
1105
1106 (defun wl-thread-open-close (&optional force-open)
1107   (interactive "P")
1108   (when (eq wl-summary-buffer-view 'thread)
1109 ;;; (if (equal wl-thread-top-entity '(nil t nil nil))
1110 ;;;     (error "There's no thread structure"))
1111     (save-excursion
1112       (let ((inhibit-read-only t)
1113             (buffer-read-only nil)
1114             (wl-thread-insert-force-opened
1115              (or wl-thread-insert-force-opened
1116                  force-open))
1117             msg entity parent)
1118         (setq msg (wl-summary-message-number))
1119         (setq entity (wl-thread-get-entity msg))
1120         (if (wl-thread-entity-get-opened entity)
1121             ;; if already opened, close its child!
1122           (if (wl-thread-entity-get-children entity)
1123               (wl-thread-close entity)
1124             ;; opened, but has no children, close its parent!
1125             (when (setq parent (wl-thread-entity-get-parent entity))
1126               (wl-summary-jump-to-msg parent)
1127               (wl-thread-close
1128                (wl-thread-get-entity (wl-summary-message-number)))))
1129           ;; if closed (or it is just a thread bottom message)
1130           ;; has children, open it!
1131           (if (wl-thread-entity-get-children entity)
1132               (wl-thread-open entity)
1133             ;; closed, and has no children, close its parent!
1134             (setq msg (or (wl-thread-entity-get-parent entity)
1135                           (wl-thread-entity-get-number entity)))
1136             (when msg
1137               (wl-summary-jump-to-msg msg)
1138               (wl-thread-close
1139                (wl-thread-get-entity (wl-summary-message-number)))))))
1140       (wl-summary-set-message-modified)
1141       (set-buffer-modified-p nil))))
1142
1143
1144 (defun wl-thread-get-depth-of-current-line ()
1145   (interactive)
1146   (save-excursion
1147     (beginning-of-line)
1148     (let ((depth 0))
1149       (if (re-search-forward (concat "^" wl-summary-buffer-number-regexp
1150                                      "..../..\(.*\)..:.. ")
1151                              nil t)
1152           (while (string-match wl-thread-indent-regexp
1153                                (char-to-string
1154                                 (char-after (point))))
1155             (setq depth (1+ depth))
1156             (forward-char)))
1157       (/ depth wl-thread-indent-level-internal))))
1158
1159 (defun wl-thread-update-indent-string-region (beg end)
1160   (interactive "r")
1161   (save-excursion
1162     (goto-char beg)
1163     (while (< (point) end)
1164       (wl-thread-update-indent-string)
1165       (forward-line 1))))
1166
1167 (defsubst wl-thread-make-indent-string (entity)
1168   (let ((cur entity)
1169         (ret-val "")
1170         (space-str (wl-repeat-string wl-thread-space-str-internal
1171                                      (- wl-thread-indent-level-internal 1)))
1172         parent)
1173     (when (wl-thread-entity-get-number
1174            (setq parent (wl-thread-entity-get-parent-entity cur)))
1175       (if (wl-thread-entity-get-younger-brothers cur)
1176           (setq ret-val wl-thread-have-younger-brother-str-internal)
1177         (setq ret-val wl-thread-youngest-child-str-internal))
1178       (setq ret-val (concat ret-val
1179                             (wl-repeat-string
1180                              wl-thread-horizontal-str-internal
1181                              (- wl-thread-indent-level-internal 1))))
1182       (setq cur parent)
1183       (while (wl-thread-entity-get-number
1184               (wl-thread-entity-get-parent-entity cur))
1185         (if (wl-thread-entity-get-younger-brothers cur)
1186             (setq ret-val (concat wl-thread-vertical-str-internal
1187                                   space-str
1188                                   ret-val))
1189           (setq ret-val (concat wl-thread-space-str-internal
1190                                 space-str
1191                                 ret-val)))
1192         (setq cur (wl-thread-entity-get-parent-entity cur))))
1193     ret-val))
1194
1195 (defun wl-thread-update-indent-string ()
1196   "Update indent string of current line."
1197   (interactive)
1198   (save-excursion
1199     (beginning-of-line)
1200     (let ((inhibit-read-only t)
1201           (buffer-read-only nil)
1202           thr-str)
1203       (when (looking-at (concat "^ *\\([0-9]+\\)"
1204                                 "..../..\(.*\)..:.. \\("
1205                                 wl-highlight-thread-indent-string-regexp
1206                                 "\\)[[<]"))
1207         (goto-char (match-beginning 2))
1208         (delete-region (match-beginning 2)
1209                        (match-end 2))
1210         (setq thr-str
1211               (wl-thread-make-indent-string
1212                (wl-thread-get-entity (string-to-int (wl-match-buffer 1)))))
1213         (if (and wl-summary-width
1214                  wl-summary-indent-length-limit
1215                  (< wl-summary-indent-length-limit
1216                     (string-width thr-str)))
1217             (setq thr-str (wl-set-string-width
1218                            wl-summary-indent-length-limit
1219                            thr-str)))
1220         (insert thr-str)
1221         (if wl-summary-highlight
1222             (wl-highlight-summary-current-line))))))
1223
1224 (defun wl-thread-set-parent (&optional parent-number)
1225   "Set current message's parent interactively."
1226   (interactive)
1227   (let ((number (wl-summary-message-number))
1228         (dst-parent (if (interactive-p)
1229                         (read-from-minibuffer "Parent Message (No.): ")))
1230         entity dst-parent-entity src-parent children
1231         update-msgs
1232         buffer-read-only)
1233     (if (string= dst-parent "")
1234         (setq dst-parent nil)
1235       (if (interactive-p)
1236           (setq dst-parent (string-to-int dst-parent))
1237         (setq dst-parent parent-number)))
1238     (if (and dst-parent
1239              (memq dst-parent (wl-thread-get-children-msgs number)))
1240         (error "Parent is children or myself"))
1241     (setq entity (wl-thread-get-entity number))
1242     (when (and number entity)
1243       ;; delete thread
1244       (setq update-msgs (wl-thread-delete-message number 'deep))
1245       ;; insert as child at new parent
1246       (setq dst-parent-entity (wl-thread-get-entity dst-parent))
1247       (if dst-parent-entity
1248           (progn
1249             (if (setq children
1250                       (wl-thread-entity-get-children dst-parent-entity))
1251                 (wl-append update-msgs
1252                            (wl-thread-get-children-msgs
1253                             (car (last children)) t)))
1254             (wl-thread-entity-set-children
1255              dst-parent-entity
1256              (append children (list number)))
1257             (wl-thread-entity-set-linked entity t))
1258         ;; insert as top
1259         (wl-append wl-thread-entity-list (list number))
1260         (wl-thread-entity-set-linked entity nil))
1261
1262       ;; update my thread
1263       (wl-append update-msgs (wl-thread-get-children-msgs number t))
1264       (setq update-msgs (elmo-uniq-list update-msgs))
1265       (wl-thread-entity-set-parent entity dst-parent)
1266       ;; update thread on buffer
1267       (wl-thread-update-line-msgs update-msgs t))))
1268
1269 (require 'product)
1270 (product-provide (provide 'wl-thread) (require 'wl-version))
1271
1272 ;;; wl-thread.el ends here