/usr/share/emacs/site-lisp/w3m/w3m-xmas.el is in w3m-el-snapshot 1.4.569+0.20170110-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 | ;;; w3m-xmas.el --- XEmacs stuff for emacs-w3m
;; Copyright (C) 2001-2010, 2012, 2013
;; TSUCHIYA Masatoshi <tsuchiya@namazu.org>
;; Authors: Yuuichi Teranishi <teranisi@gohome.org>,
;; TSUCHIYA Masatoshi <tsuchiya@namazu.org>,
;; Katsumi Yamaoka <yamaoka@jpl.org>
;; Keywords: w3m, WWW, hypermedia
;; This file is a part of emacs-w3m.
;; 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, 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; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This file contains XEmacs stuff that emacs-w3m uses. For more
;; detail about emacs-w3m, see:
;;
;; http://emacs-w3m.namazu.org/
;;; Code:
(require 'w3m-util)
(require 'w3m-proc)
(require 'w3m-image)
(require 'w3m-favicon)
(eval-and-compile
(when (featurep 'mule)
(require 'w3m-ccl)))
;; Functions and variables which should be defined in the other module
;; at run-time.
(eval-when-compile
(defvar w3m-coding-system)
(defvar w3m-current-title)
(defvar w3m-current-url)
(defvar w3m-display-inline-images)
(defvar w3m-icon-directory)
(defvar w3m-menu-on-forefront)
(defvar w3m-menubar)
(defvar w3m-modeline-process-status-on)
(defvar w3m-show-graphic-icons-in-mode-line)
(defvar w3m-toolbar)
(defvar w3m-toolbar-buttons)
(defvar w3m-use-tab)
(defvar w3m-use-tab-menubar)
(defvar w3m-work-buffer-name)
(defvar w3m-work-buffer-list)
(defvar w3m-default-coding-system)
(defvar w3m-coding-system)
(autoload 'update-tab-in-gutter "gutter-items")
(autoload 'w3m-image-type "w3m")
(autoload 'w3m-retrieve "w3m")
(autoload 'w3m-setup-tab-menu "w3m-tabmenu")
(autoload 'w3m-setup-bookmark-menu "w3m-bookmark")
(autoload 'w3m-setup-session-menu "w3m-session"))
;; Dummies to shut some XEmacs variants up.
(eval-when-compile
(autoload 'unicode-to-char "XEmacs-21.5-b6_and_later")
(unless (featurep 'mule)
(defalias 'find-charset 'ignore)))
(require 'path-util)
(require 'poe)
(require 'poem)
(require 'pccl)
;;; Handle coding system:
(eval-when-compile
(unless (fboundp 'find-coding-system)
(defalias 'find-coding-system 'ignore)
(defalias 'coding-system-name 'ignore)))
(defalias 'w3m-find-coding-system
(if (fboundp 'find-coding-system)
(lambda (obj)
(and obj
(setq obj (find-coding-system obj))
(coding-system-name obj)))
'ignore))
;; Under XEmacs 21.5-b6 and later, `make-ccl-coding-system' will
;; signal an error if the coding-system has already been defined.
;; To make w3m.elc reloadable, we'll define the function as follows:
;;
;;(defun w3m-make-ccl-coding-system (coding-system args...)
;; (or (find-coding-system coding-system)
;; (make-ccl-coding-system coding-system args...)))
(eval-when-compile
(defmacro w3m-define-w3m-make-ccl-coding-system ()
"Make the source form for the function `w3m-make-ccl-coding-system'."
(if (and (fboundp 'make-ccl-coding-system)
(fboundp 'find-coding-system))
`(defun w3m-make-ccl-coding-system (coding-system mnemonic docstring
decoder encoder)
,(concat (documentation 'make-ccl-coding-system)
"\n\n\
NOTE: This function is slightly modified from `make-ccl-coding-system'
to be recallable for the existing coding-systems without errors.")
(or (find-coding-system coding-system)
(,(symbol-function 'make-ccl-coding-system)
coding-system mnemonic docstring decoder encoder)))
'(defalias 'w3m-make-ccl-coding-system 'ignore))))
(w3m-define-w3m-make-ccl-coding-system)
(eval-and-compile
(dolist (fn '(coding-priority-list
coding-system-category
coding-system-list
coding-system-name
coding-system-type
set-coding-category-system
set-coding-priority-list))
(unless (fboundp fn)
(defalias fn 'ignore))))
;; If pccl.elc has been mis-compiled for XEmacs with MULE, the macro
;; `define-ccl-program' wouldn't be an empty macro because of advice.
(when (and (not (featurep 'mule))
(featurep 'advice))
(ad-unadvise 'define-ccl-program))
(unless (fboundp 'define-ccl-program)
(defmacro define-ccl-program (&rest args)))
(defmacro w3m-detect-coding-with-priority (from to priority-list)
(cond
((featurep 'mule)
`(detect-coding-with-priority ,from ,to ,priority-list))
((featurep 'file-coding)
`(detect-coding-region ,from ,to))
(t
'w3m-default-coding-system)))
(defun w3m-detect-coding-region (start end &optional priority-list)
"Detect coding system of the text in the region between START and END.
Return the first possible coding system.
PRIORITY-LIST is a list of coding systems ordered by priority."
(let (category categories codesys)
(dolist (codesys priority-list)
(setq category (or (coding-system-category codesys)
(coding-system-name codesys)))
(unless (assq category categories)
(push (cons category codesys) categories)))
(if (consp (setq codesys (w3m-detect-coding-with-priority
start end (nreverse categories))))
(car codesys)
codesys)))
(eval-when-compile (autoload 'ucs-to-char "unicode"))
;; This might be redefined by w3m-ucs.el.
(cond ((and (fboundp 'unicode-to-char) ;; XEmacs 21.5.
(subrp (symbol-function 'unicode-to-char)))
(if (featurep 'mule)
(defalias 'w3m-ucs-to-char 'unicode-to-char)
(defun w3m-ucs-to-char (codepoint)
(or (unicode-to-char codepoint) ?~))))
((featurep 'mule)
(defun w3m-ucs-to-char (codepoint)
(if (fboundp 'ucs-to-char) ;; Mule-UCS is loaded.
(progn
(defalias 'w3m-ucs-to-char
(lambda (codepoint)
(condition-case nil
(or (ucs-to-char codepoint) ?~)
(error ?~))))
(w3m-ucs-to-char codepoint))
(condition-case nil
(or (int-to-char codepoint) ?~)
(error ?~)))))
(t
(defun w3m-ucs-to-char (codepoint)
(condition-case nil
(or (int-to-char codepoint) ?~)
(error ?~)))))
;;; Handle images:
;; Function which returns non-nil when the current display device can
;; show images inline.
(defalias 'w3m-display-graphic-p 'device-on-window-system-p)
(defun w3m-display-inline-images-p ()
"Returns non-nil when images can be displayed under the present
circumstances."
(and w3m-display-inline-images (device-on-window-system-p)))
(defvar w3m-should-unoptimize-animated-gifs t
"Specify whether w3m should unoptimize animated gif images for showing.")
(defvar w3m-should-convert-interlaced-gifs t
"Specify whether w3m should convert interlaced gif images to be non-
interlaced. There is a known bug in the whole version of XEmacs so
far that it may crash when some kind of an interlaced gif image is
displayed.")
(defvar w3m-gifsicle-program (when (exec-installed-p "gifsicle")
"gifsicle")
"*Name of the gifsicle program used to unoptimize animated gif images
or to convert interlaced gif images to be non-interlaced.")
(defvar w3m-cache-fixed-gif-images nil
"Cache used to keep fixed gif images. Fixed gif means that an
unoptimized animated gif or a non-interlaced gif which is converted
from an interlaced gif. The value is an alist of a URL and a glyph.
Glyph will be nil if there is no need to be unoptimized nor to convert
to be non-interlaced. Each element should be updated when a URL is
newly retrieved.")
(defvar w3m-cache-fixed-gif-images-max-length 32
"*Number to limit the length of `w3m-cache-fixed-gif-images'.")
(defvar w3m-animated-gif-maximum-size 1048579
"*Maximum size (width * height * frames) of animated gif images. If a
size of an image is larger than this (it might be a bomb!), only the
first frame will be shown. You can make it to be unlimited with the
value nil if your computer has TerrrrrrraBytes of memories.")
(defun w3m-fix-gif (url data no-cache)
"Return a glyph image of a gif DATA corresponding to a URL which is
suitable for XEmacs. It will unoptimize an animated gif or convert
an interlaced gif to be non-interlaced. Otherwise it returns nil when
there is no need to be unoptimized nor to convert to be non-interlaced
\(or, unfortunately, the unoptimization or the conversion is failed).
It manages the cache `w3m-cache-fixed-gif-images'. If NO-CACHE is
non-nil, a cached data will not be used and it will be updated by a
new glyph image. See also the documentation for the variable
`w3m-animated-gif-maximum-size'."
(let ((cache (assoc url w3m-cache-fixed-gif-images)))
;; Move the element which is associated with `url' to the
;; top of the cache.
(when (and cache
(not (eq cache (car w3m-cache-fixed-gif-images))))
(setq w3m-cache-fixed-gif-images
(cons cache (delq cache w3m-cache-fixed-gif-images))))
(if (or no-cache
(not cache))
(with-temp-buffer
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary)
should-be-non-interlaced should-unoptimize size1 size2 glyph)
(insert data)
(when (looking-at "GIF8[79]")
(call-process-region (point-min) (point-max)
w3m-gifsicle-program
t t nil "--info")
(goto-char (point-min))
;; Check whether a `data' is interlaced.
(setq should-be-non-interlaced
(re-search-forward
" \\+ image #[0-9]+ \\(?:[0-9]+x[0-9]+\\).* interlaced"
nil t))
(goto-char (point-min))
;; Check whether a `data' is optimized or larger than
;; the value of `w3m-animated-gif-maximum-size'.
(when (and w3m-animated-gif-maximum-size
(looking-at ".+ \\([0-9]+\\) images\r?$"))
(setq size1 (string-to-number (match-string 1)))
(forward-line 1)
(unless (and (looking-at ".+ \\([0-9]+\\)x\\([0-9]+\\)\r?$")
(natnump (setq size1 (* size1
(string-to-number
(match-string 1)))))
(<= size1 w3m-animated-gif-maximum-size)
(natnump (setq size1 (* size1
(string-to-number
(match-string 2)))))
(<= size1 w3m-animated-gif-maximum-size))
;; It should be truncated to be only one frame.
(setq should-unoptimize "#0"))
(setq size1 nil)
(while (and (not should-unoptimize)
(re-search-forward
" \\+ image #[0-9]+ \\([0-9]+x[0-9]+\\)"
nil t))
(if size1
(if (string-equal size1 (setq size2 (match-string 1)))
(setq size1 size2)
(setq should-unoptimize "--unoptimize"))
(setq size1 (match-string 1)))))
(when (or should-unoptimize should-be-non-interlaced)
(erase-buffer)
(insert data)
;; Unoptimize anyway.
(if should-unoptimize
(call-process-region (point-min) (point-max)
w3m-gifsicle-program
t t nil should-unoptimize
"--no-interlace")
(call-process-region (point-min) (point-max)
w3m-gifsicle-program
t t nil "--no-interlace"))
(goto-char (point-min))
(when (or (looking-at "GIF8[79]")
;; Unoptimization is failed. :-<
;; Attempt to extract the first frame.
(progn
(erase-buffer)
(insert data)
(call-process-region (point-min) (point-max)
w3m-gifsicle-program
t t nil "#0" "--no-interlace")
(goto-char (point-min))
(looking-at "GIF8[79]")))
;; Perhaps the unoptimization is succeeded.
(setq glyph
(make-glyph (vector 'gif :data (buffer-string)))))))
;; Update a cache.
(if cache
(setcdr cache glyph)
(push (cons url glyph) w3m-cache-fixed-gif-images)
(let ((maxlen w3m-cache-fixed-gif-images-max-length))
(when (and (integerp maxlen)
(>= maxlen 1)
(> (length w3m-cache-fixed-gif-images) maxlen))
(setcdr (nthcdr (1- maxlen) w3m-cache-fixed-gif-images)
nil))))
glyph))
;; Use a cached glyph.
(cdr cache))))
(defun w3m-make-glyph (data type)
(or (and (eq type 'xbm)
(let (width height content)
(with-temp-buffer
(insert data)
(goto-char (point-min))
(if (re-search-forward "width[ \t]+\\([0-9]+\\)")
(setq width (string-to-number (match-string 1))))
(if (re-search-forward "height[ \t]+\\([0-9]+\\)")
(setq height (string-to-number (match-string 1))))
(while (re-search-forward "0x\\(..\\)" nil t)
(setq content (cons
(string-to-number
(match-string 1) 16) content)))
(setq content (concat (nreverse content))))
(make-glyph (vector 'xbm :data (list width height content)))))
(make-glyph (vector type :data data))))
(defun w3m-create-image (url &optional no-cache referer size handler)
"Retrieve data from URL and create an image object.
If optional argument NO-CACHE is non-nil, cache is not used.
If second optional argument REFERER is non-nil, it is used as Referer: field.
Third optional argument SIZE is currently ignored."
(if (not handler)
(w3m-process-with-wait-handler
(w3m-create-image url no-cache referer handler))
(lexical-let ((url url)
(set-size size)
(no-cache no-cache)
size)
(w3m-process-do-with-temp-buffer
(type (condition-case err
(w3m-retrieve url nil no-cache nil referer handler)
(error (message "While retrieving %s: %s" url err) nil)))
(goto-char (point-min))
(when (w3m-image-type-available-p
(setq type
(or (and (let (case-fold-search)
(looking-at
"\\(GIF8\\)\\|\\(\377\330\\)\\|\211PNG\r\n"))
(cond ((match-beginning 1) 'gif)
((match-beginning 2) 'jpeg)
(t 'png)))
(w3m-image-type type))))
(let ((data (buffer-string))
glyph)
(setq glyph (or (and (eq type 'gif)
(or w3m-should-unoptimize-animated-gifs
w3m-should-convert-interlaced-gifs)
w3m-gifsicle-program
(w3m-fix-gif url data no-cache))
(w3m-make-glyph data type)))
(if (and w3m-resize-images set-size)
(progn
(setq size (cons (glyph-width glyph)
(glyph-height glyph)))
(if (and (null (car set-size)) (cdr set-size))
(setcar set-size
(/ (* (car size) (cdr set-size))
(cdr size))))
(if (and (null (cdr set-size)) (car set-size))
(setcdr set-size
(/ (* (cdr size) (car set-size))
(car size))))
(if (or (not (eq (car size)
(car set-size))) ;; width is different
(not (eq (cdr size)
(cdr set-size)))) ;; height is different
(lexical-let ((type type))
(w3m-process-do
(resized (w3m-resize-image
data
(car set-size)(cdr set-size)
handler))
(w3m-make-glyph resized type)))
glyph))
glyph)))))))
(defun w3m-create-resized-image (url rate &optional referer size handler)
"Resize an cached image object.
URL is the image file's url.
RATE is resize percentage.
If REFERER is non-nil, it is used as Referer: field.
If SIZE is non-nil, its car element is used as width
and its cdr element is used as height."
(if (not handler)
(w3m-process-with-wait-handler
(w3m-create-image url nil referer size handler))
(lexical-let ((url url)
(rate rate)
fmt data)
(w3m-process-do-with-temp-buffer
(type (w3m-retrieve url nil nil nil referer handler))
(when (w3m-image-type-available-p (setq type (w3m-image-type type)))
(setq data (buffer-string)
fmt type)
(w3m-process-do
(resized (w3m-resize-image-by-rate data rate handler))
(when resized
(or (and (eq fmt 'gif)
(or w3m-should-unoptimize-animated-gifs
w3m-should-convert-interlaced-gifs)
w3m-gifsicle-program
(let (w3m-cache-fixed-gif-images)
(w3m-fix-gif url resized t)))
(w3m-make-glyph resized fmt)))))))))
(defun w3m-insert-image (beg end image &rest args)
"Display IMAGE in the current buffer.
A buffer string between BEG and END are replaced with IMAGE."
(let (glyphs)
(map-extents
(lambda (extent maparg)
(push (extent-end-glyph extent) glyphs)
(set-extent-end-glyph extent nil)
nil)
nil beg beg nil nil 'w3m-xmas-icon)
;; Display an image on the right hand.
(push image glyphs)
(when (extent-at end nil 'invisible nil 'at)
(setq end (next-single-property-change end 'invisible))
(map-extents
(lambda (extent maparg)
(push (extent-end-glyph extent) glyphs)
(set-extent-end-glyph extent nil)
nil)
nil end end nil nil 'w3m-xmas-icon))
(set-extent-properties (make-extent beg end) (list 'w3m-xmas-icon t
'invisible t))
(while glyphs
(set-extent-properties (make-extent end end)
(list 'w3m-xmas-icon t
'end-glyph (pop glyphs))))))
(defun w3m-remove-image (beg end)
"Remove images between BEG and END."
(map-extents (lambda (extent maparg)
(delete-extent extent)
nil)
nil beg end nil 'end-closed 'w3m-xmas-icon))
(defun w3m-image-type-available-p (image-type)
"Return non-nil if an image with IMAGE-TYPE can be displayed inline."
(and (device-on-window-system-p)
(featurep image-type)))
(defalias 'w3m-image-animate 'identity)
;;; Toolbar:
(defcustom w3m-use-toolbar (and (featurep 'toolbar) t)
"Non-nil activates toolbar of w3m."
:group 'w3m
:type 'boolean)
(defcustom w3m-toolbar-icon-preferred-image-types '(xpm)
"List of image types that you prefer to use for the tool bar icons."
:group 'w3m
:type '(repeat (symbol :tag "Image type"))
:set (lambda (symbol value)
(prog1
(custom-set-default symbol value)
(when (and (not noninteractive) (boundp 'w3m-toolbar-buttons))
(dolist (buffer (w3m-list-buffers t))
(w3m-setup-toolbar t buffer))))))
(defcustom w3m-toolbar-use-single-image-per-icon nil
"Non-nil means use single image (named possibly *-up) per icon.
If it is nil, subsidiaries, e.g., *-down and *-disabled, if any, are
used together."
:group 'w3m
:type 'boolean
:set (lambda (symbol value)
(prog1
(custom-set-default symbol value)
(when (and (not noninteractive) (boundp 'w3m-toolbar-buttons))
(dolist (buffer (w3m-list-buffers t))
(w3m-setup-toolbar t buffer))))))
(defun w3m-find-image (name &optional directory)
"Find image file for NAME and return cons of file name and type.
This function searches only in DIRECTORY, that defaults to the value of
`w3m-icon-directory', for an image file of which the base name is NAME.
Files of types that XEmacs does not support are ignored."
(unless directory
(setq directory w3m-icon-directory))
(when (and directory
(file-directory-p directory)
(device-on-window-system-p))
(let* ((case-fold-search nil)
(files (directory-files directory t
(concat "\\`" (regexp-quote name) "\\.")))
(types (append w3m-toolbar-icon-preferred-image-types
(if (boundp 'image-formats-alist)
(mapcar 'cdr
(symbol-value 'image-formats-alist))
'(png gif jpeg tiff xbm xpm bmp))))
file type rest)
(while files
(when (string-match "\\.\\([^.]+\\)\\'" (setq file (pop files)))
(setq type (intern (downcase (match-string 1 file))))
(setq type (or (cdr (assq type '((tif . tiff)
(jpg . jpeg))))
type))
(when (featurep type)
(push (cons file (memq type types)) rest))))
(setq rest (car (sort rest (lambda (a b) (> (length a) (length b))))))
(when (cdr rest)
(cons (car rest) (cadr rest))))))
(defun w3m-toolbar-make-buttons (buttons &optional force)
(let (button icon down disabled up)
(while buttons
(setq button (pop buttons)
icon (intern (concat "w3m-toolbar-" button "-icon")))
(when (or force (not (boundp icon)))
(setq down (w3m-find-image (concat button "-down"))
disabled (w3m-find-image (concat button "-disabled")))
(if (setq up (or (w3m-find-image (concat button "-up"))
(prog1
(or down disabled (w3m-find-image button))
(setq down nil
disabled nil))))
(set icon (if w3m-toolbar-use-single-image-per-icon
(toolbar-make-button-list (car up))
(toolbar-make-button-list (car up)
(car down)
(car disabled))))
(error "Icon file %s-up.* not found" button))))))
(defun w3m-setup-toolbar (&optional force buffer)
"Setup toolbar."
(when (and w3m-use-toolbar
(w3m-find-image "antenna-up"))
(w3m-toolbar-make-buttons w3m-toolbar-buttons force)
(set-specifier default-toolbar
(cons (or buffer (current-buffer)) w3m-toolbar))
t))
(defun w3m-update-toolbar ()
"Update toolbar."
(when (and w3m-use-toolbar
(or (and (boundp 'w3m-toolbar-antenna-icon)
(symbol-value 'w3m-toolbar-antenna-icon))
(w3m-setup-toolbar)))
(set-specifier default-toolbar
(cons (current-buffer) w3m-toolbar))))
;;; Menu:
(defun w3m-menu-on-forefront (arg &optional curbuf)
"Place emacs-w3m menus on the forfront of the menu bar if ARG is non-nil.
If CURBUF is given, this function works only in the current buffer,
otherwise works in all the emacs-w3m buffers."
(if curbuf
(let ((w3m (car (find-menu-item current-menubar '("w3m"))))
(bookmark (car (find-menu-item current-menubar '("Bookmark"))))
(tab (car (find-menu-item current-menubar '("Tab"))))
(session (car (find-menu-item current-menubar '("Session"))))
(items (copy-sequence current-menubar)))
(when (or w3m bookmark tab session)
(setq items (delq session (delq tab (delq bookmark (delq w3m items)))))
(set-buffer-menubar
(cond (arg
(append (delq nil (list w3m bookmark tab session)) items))
((memq nil items)
(append (nreverse (cdr (memq nil (reverse items))))
(delq nil (list w3m bookmark tab session))
(memq nil items)))
(t
(nconc items (delq nil (list w3m bookmark tab session))))))))
(save-current-buffer
(dolist (buffer (w3m-list-buffers t))
(set-buffer buffer)
(w3m-menu-on-forefront arg t)))))
(defun w3m-setup-menu ()
"Define menubar buttons for XEmacs."
(when (and (featurep 'menubar)
current-menubar
(not (assoc (car w3m-menubar) current-menubar)))
(w3m-setup-session-menu)
(when w3m-use-tab-menubar (w3m-setup-tab-menu))
(w3m-setup-bookmark-menu)
(set-buffer-menubar (cons w3m-menubar current-menubar))
(w3m-menu-on-forefront w3m-menu-on-forefront t)))
;;; Widget:
(eval-when-compile (require 'wid-edit))
(defun w3m-define-missing-widgets ()
"Define some missing widgets."
(unless (get 'coding-system 'widget-type)
;; The following codes are imported from wid-edit.el of Emacs 20.7.
(defvar widget-coding-system-prompt-value-history nil
"History of input to `widget-coding-system-prompt-value'.")
(defun widget-coding-system-prompt-value (widget prompt value unbound)
;; Read coding-system from minibuffer.
(intern
(completing-read (format "%s (default %s) " prompt value)
(mapcar (lambda (sym)
(list (symbol-name sym)))
(coding-system-list)))))
(defun widget-coding-system-action (widget &optional event)
;; Read a file name from the minibuffer.
(let ((answer
(eval (list 'widget-coding-system-prompt-value
widget
(widget-apply widget :menu-tag-get)
(widget-value widget)
t))))
(widget-value-set widget answer)
(widget-apply widget :notify widget event)
(widget-setup))))
(define-widget 'coding-system 'symbol
"A MULE coding-system."
:format "%{%t%}: %v"
:tag "Coding system"
:prompt-history 'widget-coding-system-prompt-value-history
:prompt-value 'widget-coding-system-prompt-value
:action 'widget-coding-system-action)
(unless (get 'other 'widget-type)
;; The following definition is imported from wid-edit.el of Emacs 20.7.
(define-widget 'other 'sexp
"Matches any value, but doesn't let the user edit the value.
This is useful as last item in a `choice' widget.
You should use this widget type with a default value,
as in (other DEFAULT) or (other :tag \"NAME\" DEFAULT).
If the user selects this alternative, that specifies DEFAULT
as the value."
:tag "Other"
:format "%t%n"
:value 'other)))
(eval-after-load "wid-edit" '(w3m-define-missing-widgets))
;;; Header line:
(defvar w3m-header-line-map (make-sparse-keymap))
(define-key w3m-header-line-map 'button2 'w3m-goto-url)
;;; Gutter:
(defcustom w3m-show-current-title-in-buffer-tab
(and (boundp 'gutter-buffers-tab-enabled)
gutter-buffers-tab-enabled)
"If non-nil, show the title strings in the buffers tab.
It has no effect if your XEmacs does not support the gutter items."
:group 'w3m
:type 'boolean
:get (lambda (symbol)
(if (boundp 'gutter-buffers-tab-enabled)
(default-value symbol)))
:set (lambda (symbol value)
(prog2
(or (boundp 'gutter-buffers-tab-enabled)
(setq value nil))
(custom-set-default symbol value)
(if value
(add-hook 'w3m-display-functions 'w3m-update-tab-in-gutter)
(remove-hook 'w3m-display-functions 'w3m-update-tab-in-gutter))
(condition-case nil
(progn
(if value
(ad-enable-advice
'format-buffers-tab-line 'around
'w3m-show-current-title-in-buffer-tab)
(ad-disable-advice
'format-buffers-tab-line 'around
'w3m-show-current-title-in-buffer-tab))
(if (boundp 'gutter-buffers-tab-enabled)
(mapc #'update-tab-in-gutter (frame-list))))
(error)))))
(when (boundp 'gutter-buffers-tab-enabled)
(defadvice format-buffers-tab-line
(around w3m-show-current-title-in-buffer-tab (buffer) activate)
"Advised by emacs-w3m.
Show the current title string in the buffer tab. Unfortunately,
existing XEmacs does not support showing non-ascii characters. When a
title contains non-ascii characters, show a url name by default."
(with-current-buffer buffer
(if (and w3m-show-current-title-in-buffer-tab
(symbol-value 'gutter-buffers-tab-enabled)
(eq 'w3m-mode major-mode))
(let* ((len (specifier-instance
(symbol-value 'buffers-tab-default-buffer-line-length)))
(name (if (and (stringp w3m-current-title)
(string-match "^[ -~]+$" w3m-current-title))
w3m-current-title
(if (stringp w3m-current-url)
(directory-file-name
(if (string-match "^[^/:]+:/+" w3m-current-url)
(substring w3m-current-url (match-end 0))
w3m-current-url))
"")))
(num (if (string-match ".*<\\(.+\\)>$" (buffer-name buffer))
(match-string 1 (buffer-name buffer))))
(lnum (length num)))
(setq ad-return-value
(if num
(if (and (> len 0)
(> (+ (length name) lnum) len))
(concat "[" num "]"
(substring name 0 (max 0 (- len lnum 5 )))
"...")
(concat "[" num "]" name))
(if (and (> len 0)
(> (length name) len))
(concat (substring name 0 (max 0 (- len 3))) "...")
name))))
ad-do-it)))
(if w3m-show-current-title-in-buffer-tab
(ad-enable-advice 'format-buffers-tab-line 'around
'w3m-show-current-title-in-buffer-tab)
(ad-disable-advice 'format-buffers-tab-line 'around
'w3m-show-current-title-in-buffer-tab))
(defun w3m-setup-tab-in-gutter ()
"Set up buffers tab in the gutter."
(set-specifier default-gutter-visible-p
(and w3m-use-tab gutter-buffers-tab-enabled t)
(current-buffer)))
(add-hook 'w3m-mode-setup-functions 'w3m-setup-tab-in-gutter)
(add-hook 'w3m-select-buffer-mode-hook 'w3m-setup-tab-in-gutter)
(defun w3m-update-tab-in-gutter (&rest args)
"Update the tab control in the gutter area."
(when (and w3m-use-tab gutter-buffers-tab-enabled)
(update-tab-in-gutter (selected-frame))))
(add-hook 'w3m-display-functions 'w3m-update-tab-in-gutter))
;;; Graphic icons:
(defcustom w3m-space-before-modeline-icon ""
"String of space character(s) to be put in front of the modeline icon.
It may be better to use one or more spaces if you are using oblique or
italic font in the modeline."
:group 'w3m
:type 'string)
;; Glyph images to be displayed in the modeline.
(defvar w3m-modeline-process-status-on-icon nil)
(defvar w3m-modeline-image-status-on-icon nil)
(defvar w3m-modeline-status-off-icon nil)
(defvar w3m-modeline-ssl-image-status-on-icon nil)
(defvar w3m-modeline-ssl-status-off-icon nil)
(defun w3m-initialize-graphic-icons (&optional force)
"Make icon images which will be displayed in the modeline."
(interactive "P")
;; Prefer xpm icons rather than png icons since XEmacs doesn't display
;; background colors of icon images other than xpm images transparently
;; in the mode line.
(let* ((w3m-toolbar-icon-preferred-image-types '(xpm))
(defs `((w3m-modeline-status-off-icon
,(w3m-find-image "state-00")
w3m-modeline-status-off)
(w3m-modeline-image-status-on-icon
,(w3m-find-image "state-01")
w3m-modeline-image-status-on)
(w3m-modeline-ssl-status-off-icon
,(w3m-find-image "state-10")
w3m-modeline-ssl-status-off)
(w3m-modeline-ssl-image-status-on-icon
,(w3m-find-image "state-11")
w3m-modeline-ssl-image-status-on)))
def icon file type status extent keymap)
(while defs
(setq def (car defs)
defs (cdr defs)
icon (car def)
file (car (nth 1 def))
type (cdr (nth 1 def))
status (nth 2 def))
(if (and w3m-show-graphic-icons-in-mode-line file)
(progn
(when (or force (not (symbol-value icon)))
(unless extent
(setq extent (make-extent nil nil)
keymap (make-sparse-keymap))
(define-key keymap 'button2
(make-modeline-command-wrapper 'w3m-reload-this-page))
(set-extent-keymap extent keymap)
(set-extent-property extent 'help-echo
"button2 reloads this page"))
(set icon
(cons extent
(make-glyph
(make-image-instance (vector type :file file))))))
(when (stringp (symbol-value status))
;; Save the original status strings as properties.
(put status 'string (symbol-value status)))
(set status (list '("" w3m-space-before-modeline-icon) icon)))
;; Don't use graphic icons.
(when (get status 'string)
(set status (get status 'string)))))
;; Spinner.
(if (and w3m-show-graphic-icons-in-mode-line
(device-on-window-system-p)
(featurep 'gif)
w3m-icon-directory
(file-directory-p w3m-icon-directory)
(file-exists-p
(setq file (expand-file-name "spinner.gif"
w3m-icon-directory))))
(progn
(when (or force (not w3m-modeline-process-status-on-icon))
(setq extent (make-extent nil nil)
keymap (make-sparse-keymap))
(define-key keymap 'button2
(make-modeline-command-wrapper 'w3m-process-stop))
(set-extent-keymap extent keymap)
(set-extent-property extent 'help-echo
"button2 kills the current process")
(setq
w3m-modeline-process-status-on-icon
(cons
extent
(make-glyph
(if w3m-gifsicle-program
;; XEmacs doesn't support a transparent color on gifs,
;; so we should replace the background color of the image
;; with the modeline's one.
(make-image-instance
(vector
'gif
:data
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary)
format-alist)
(with-temp-buffer
(insert-file-contents file)
(call-process-region
(point-min) (point-max) w3m-gifsicle-program t t nil
"--careful" "--delay" "10" "--loopcount=forever"
"--change-color" "255,255,255"
(mapconcat
(lambda (c) (number-to-string (% c 256)))
(color-rgb-components
(face-background 'modeline))
","))
(buffer-string)))))
(make-image-instance (vector 'gif :file file)))))))
(when (stringp w3m-modeline-process-status-on)
;; Save the original status string as a property.
(put 'w3m-modeline-process-status-on 'string
w3m-modeline-process-status-on))
(setq w3m-modeline-process-status-on
'(("" w3m-space-before-modeline-icon)
w3m-modeline-process-status-on-icon)))
;; Don't use spinner.
(when (get 'w3m-modeline-process-status-on 'string)
(setq w3m-modeline-process-status-on
(get 'w3m-modeline-process-status-on 'string))))))
;;; Miscellaneous:
(if (featurep 'mule)
(defalias 'multibyte-string-p 'stringp)
(defalias 'multibyte-string-p 'ignore))
(if (featurep 'mule)
(defun w3m-mule-unicode-p ()
"Check the existence as charsets of mule-unicode."
(and (find-charset 'mule-unicode-0100-24ff)
(find-charset 'mule-unicode-2500-33ff)
(find-charset 'mule-unicode-e000-ffff)))
(defalias 'w3m-mule-unicode-p 'ignore))
(when (featurep 'mule)
(defun w3m-window-hscroll (&optional window)
"Replacement of `window-hscroll' for XEmacs-Mule.
XEmacs does not work correctly in the display control in case buffer
contains characters of various width. This function does not
necessarily solve the problem completely."
(let ((hs (window-hscroll window))
(spos (point-at-bol))
(epos (point-at-eol))
(buf (window-buffer window)))
(save-selected-window
(save-excursion ;; Don't replace it with:
(set-buffer buf) ;; (with-current-buffer buf
(beginning-of-line)
(condition-case nil
(forward-char hs)
(error (goto-char (point-max))))
(if (< epos (point))
(+ hs (- (string-width (buffer-substring spos epos))
(- epos spos)))
(string-width (buffer-substring spos (point))))))))
(defun w3m-current-column ()
"Replacement of `current-column' for XEmacs-Mule.
XEmacs does not work correctly in the display control in case buffer
contains characters of various width. This function does not
necessarily solve the problem completely."
(- (point) (point-at-bol)))
(defun w3m-set-window-hscroll (window columns)
"Replacement of `set-window-hscroll' for XEmacs-Mule.
XEmacs does not work correctly in the display control in case buffer
contains characters of various width. This function does not
necessarily solve the problem completely."
(save-excursion
(move-to-column (max columns 0))
(if (> columns (current-column))
(set-window-hscroll window (+ (- (point-at-eol) (point-at-bol))
(- columns (current-column))))
(set-window-hscroll window (- (point) (point-at-bol))))))
)
(defun w3m-form-coding-system-accept-region-p (&optional from to coding-system)
"Check whether `coding-system' can encode specified region."
(let ((string (buffer-substring (or from (point-min))
(or to (point-max)))))
(unless (string= (decode-coding-string
(encode-coding-string string coding-system)
coding-system)
string)
(message "Warning: this text may cause coding-system problem."))
t))
(provide 'w3m-xmas)
;;; w3m-xmas.el ends here
|