code.delx.au - gnu-emacs/blob - lisp/net/eww.el

   1 ;;; eww.el --- Emacs Web Wowser
   2
   3 ;; Copyright (C) 2013-2015 Free Software Foundation, Inc.
   4
   5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   6 ;; Keywords: html
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 (eval-when-compile (require 'cl))
  28 (require 'format-spec)
  29 (require 'shr)
  30 (require 'url)
  31 (require 'mm-url)
  32
  33 (defgroup eww nil
  34   "Emacs Web Wowser"
  35   :version "24.4"
  36   :link '(custom-manual "(eww) Top")
  37   :group 'hypermedia
  38   :prefix "eww-")
  39
  40 (defcustom eww-header-line-format "%t: %u"
  41   "Header line format.
  42 - %t is replaced by the title.
  43 - %u is replaced by the URL."
  44   :version "24.4"
  45   :group 'eww
  46   :type 'string)
  47
  48 (defcustom eww-search-prefix "https://duckduckgo.com/html/?q="
  49   "Prefix URL to search engine"
  50   :version "24.4"
  51   :group 'eww
  52   :type 'string)
  53
  54 (defcustom eww-download-directory "~/Downloads/"
  55   "Directory where files will downloaded."
  56   :version "24.4"
  57   :group 'eww
  58   :type 'string)
  59
  60 (defcustom eww-use-external-browser-for-content-type
  61   "\\`\\(video/\\|audio/\\|application/ogg\\)"
  62   "Always use external browser for specified content-type."
  63   :version "24.4"
  64   :group 'eww
  65   :type '(choice (const :tag "Never" nil)
  66                  regexp))
  67
  68 (defcustom eww-form-checkbox-selected-symbol "[X]"
  69   "Symbol used to represent a selected checkbox.
  70 See also `eww-form-checkbox-symbol'."
  71   :version "24.4"
  72   :group 'eww
  73   :type '(choice (const "[X]")
  74                  (const "☒")            ; Unicode BALLOT BOX WITH X
  75                  (const "☑")            ; Unicode BALLOT BOX WITH CHECK
  76                  string))
  77
  78 (defcustom eww-form-checkbox-symbol "[ ]"
  79   "Symbol used to represent a checkbox.
  80 See also `eww-form-checkbox-selected-symbol'."
  81   :version "24.4"
  82   :group 'eww
  83   :type '(choice (const "[ ]")
  84                  (const "☐")            ; Unicode BALLOT BOX
  85                  string))
  86
  87 (defface eww-form-submit
  88   '((((type x w32 ns) (class color))    ; Like default mode line
  89      :box (:line-width 2 :style released-button)
  90      :background "#808080" :foreground "black"))
  91   "Face for eww buffer buttons."
  92   :version "24.4"
  93   :group 'eww)
  94
  95 (defface eww-form-checkbox
  96   '((((type x w32 ns) (class color))    ; Like default mode line
  97      :box (:line-width 2 :style released-button)
  98      :background "lightgrey" :foreground "black"))
  99   "Face for eww buffer buttons."
 100   :version "24.4"
 101   :group 'eww)
 102
 103 (defface eww-form-select
 104   '((((type x w32 ns) (class color))    ; Like default mode line
 105      :box (:line-width 2 :style released-button)
 106      :background "lightgrey" :foreground "black"))
 107   "Face for eww buffer buttons."
 108   :version "24.4"
 109   :group 'eww)
 110
 111 (defface eww-form-text
 112   '((t (:background "#505050"
 113                     :foreground "white"
 114                     :box (:line-width 1))))
 115   "Face for eww text inputs."
 116   :version "24.4"
 117   :group 'eww)
 118
 119 (defface eww-form-textarea
 120   '((t (:background "#C0C0C0"
 121                     :foreground "black"
 122                     :box (:line-width 1))))
 123   "Face for eww textarea inputs."
 124   :version "24.4"
 125   :group 'eww)
 126
 127 (defvar eww-current-url nil)
 128 (defvar eww-current-dom nil)
 129 (defvar eww-current-source nil)
 130 (defvar eww-current-title ""
 131   "Title of current page.")
 132 (defvar eww-history nil)
 133 (defvar eww-history-position 0)
 134
 135 (defvar eww-next-url nil)
 136 (defvar eww-previous-url nil)
 137 (defvar eww-up-url nil)
 138 (defvar eww-home-url nil)
 139 (defvar eww-start-url nil)
 140 (defvar eww-contents-url nil)
 141
 142 (defvar eww-local-regex "localhost"
 143   "When this regex is found in the URL, it's not a keyword but an address.")
 144
 145 (defvar eww-link-keymap
 146   (let ((map (copy-keymap shr-map)))
 147     (define-key map "\r" 'eww-follow-link)
 148     map))
 149
 150 ;;;###autoload
 151 (defun eww (url)
 152   "Fetch URL and render the page.
 153 If the input doesn't look like an URL or a domain name, the
 154 word(s) will be searched for via `eww-search-prefix'."
 155   (interactive "sEnter URL or keywords: ")
 156   (cond ((string-match-p "\\`file://" url))
 157         ((string-match-p "\\`ftp://" url)
 158          (user-error "FTP is not supported."))
 159         (t
 160          (if (and (= (length (split-string url)) 1)
 161                  (or (and (not (string-match-p "\\`[\"\'].*[\"\']\\'" url))
 162                           (> (length (split-string url "\\.")) 1))
 163                      (string-match eww-local-regex url)))
 164              (progn
 165                (unless (string-match-p "\\`[a-zA-Z][-a-zA-Z0-9+.]*://" url)
 166                  (setq url (concat "http://" url)))
 167                ;; some site don't redirect final /
 168                (when (string= (url-filename (url-generic-parse-url url)) "")
 169                  (setq url (concat url "/"))))
 170            (setq url (concat eww-search-prefix
 171                              (replace-regexp-in-string " " "+" url))))))
 172   (url-retrieve url 'eww-render (list url)))
 173
 174 ;;;###autoload (defalias 'browse-web 'eww)
 175
 176 ;;;###autoload
 177 (defun eww-open-file (file)
 178   "Render a file using EWW."
 179   (interactive "fFile: ")
 180   (eww (concat "file://"
 181                (and (memq system-type '(windows-nt ms-dos))
 182                     "/")
 183                (expand-file-name file))))
 184
 185 (defun eww-render (status url &optional point)
 186   (let ((redirect (plist-get status :redirect)))
 187     (when redirect
 188       (setq url redirect)))
 189   (let* ((headers (eww-parse-headers))
 190          (content-type
 191           (mail-header-parse-content-type
 192            (or (cdr (assoc "content-type" headers))
 193                "text/plain")))
 194          (charset (intern
 195                    (downcase
 196                     (or (cdr (assq 'charset (cdr content-type)))
 197                         (eww-detect-charset (equal (car content-type)
 198                                                    "text/html"))
 199                         "utf8"))))
 200          (data-buffer (current-buffer)))
 201     (unwind-protect
 202         (progn
 203           (setq eww-current-title "")
 204           (cond
 205            ((and eww-use-external-browser-for-content-type
 206                  (string-match-p eww-use-external-browser-for-content-type
 207                                  (car content-type)))
 208             (eww-browse-with-external-browser url))
 209            ((equal (car content-type) "text/html")
 210             (eww-display-html charset url nil point))
 211            ((string-match-p "\\`image/" (car content-type))
 212             (eww-display-image)
 213             (eww-update-header-line-format))
 214            (t
 215             (eww-display-raw)
 216             (eww-update-header-line-format)))
 217           (setq eww-current-url url
 218                 eww-history-position 0))
 219       (kill-buffer data-buffer))))
 220
 221 (defun eww-parse-headers ()
 222   (let ((headers nil))
 223     (goto-char (point-min))
 224     (while (and (not (eobp))
 225                 (not (eolp)))
 226       (when (looking-at "\\([^:]+\\): *\\(.*\\)")
 227         (push (cons (downcase (match-string 1))
 228                     (match-string 2))
 229               headers))
 230       (forward-line 1))
 231     (unless (eobp)
 232       (forward-line 1))
 233     headers))
 234
 235 (defun eww-detect-charset (html-p)
 236   (let ((case-fold-search t)
 237         (pt (point)))
 238     (or (and html-p
 239              (re-search-forward
 240               "<meta[\t\n\r ]+[^>]*charset=\"?\\([^\t\n\r \"/>]+\\)[\\\"'.*]" nil t)
 241              (goto-char pt)
 242              (match-string 1))
 243         (and (looking-at
 244               "[\t\n\r ]*<\\?xml[\t\n\r ]+[^>]*encoding=\"\\([^\"]+\\)")
 245              (match-string 1)))))
 246
 247 (declare-function libxml-parse-html-region "xml.c"
 248                   (start end &optional base-url))
 249
 250 (defun eww-display-html (charset url &optional document point)
 251   (or (fboundp 'libxml-parse-html-region)
 252       (error "This function requires Emacs to be compiled with libxml2"))
 253   (unless (eq charset 'utf8)
 254     (condition-case nil
 255         (decode-coding-region (point) (point-max) charset)
 256       (coding-system-error nil)))
 257   (let ((document
 258          (or document
 259              (list
 260               'base (list (cons 'href url))
 261               (libxml-parse-html-region (point) (point-max))))))
 262     (setq eww-current-source (buffer-substring (point) (point-max)))
 263     (eww-setup-buffer)
 264     (setq eww-current-dom document)
 265     (let ((inhibit-read-only t)
 266           (after-change-functions nil)
 267           (shr-width nil)
 268           (shr-target-id (url-target (url-generic-parse-url url)))
 269           (shr-external-rendering-functions
 270            '((title . eww-tag-title)
 271              (form . eww-tag-form)
 272              (input . eww-tag-input)
 273              (textarea . eww-tag-textarea)
 274              (body . eww-tag-body)
 275              (select . eww-tag-select)
 276              (link . eww-tag-link)
 277              (a . eww-tag-a))))
 278       (shr-insert-document document)
 279       (cond
 280        (point
 281         (goto-char point))
 282        (shr-target-id
 283         (goto-char (point-min))
 284         (let ((point (next-single-property-change
 285                       (point-min) 'shr-target-id)))
 286           (when point
 287             (goto-char point))))
 288        (t
 289         (goto-char (point-min)))))
 290     (setq eww-current-url url
 291           eww-history-position 0)
 292     (eww-update-header-line-format)))
 293
 294 (defun eww-handle-link (cont)
 295   (let* ((rel (assq :rel cont))
 296         (href (assq :href cont))
 297         (where (assoc
 298                 ;; The text associated with :rel is case-insensitive.
 299                 (if rel (downcase (cdr rel)))
 300                       '(("next" . eww-next-url)
 301                         ;; Texinfo uses "previous", but HTML specifies
 302                         ;; "prev", so recognize both.
 303                         ("previous" . eww-previous-url)
 304                         ("prev" . eww-previous-url)
 305                         ;; HTML specifies "start" but also "contents",
 306                         ;; and Gtk seems to use "home".  Recognize
 307                         ;; them all; but store them in different
 308                         ;; variables so that we can readily choose the
 309                         ;; "best" one.
 310                         ("start" . eww-start-url)
 311                         ("home" . eww-home-url)
 312                         ("contents" . eww-contents-url)
 313                         ("up" . eww-up-url)))))
 314     (and href
 315          where
 316          (set (cdr where) (cdr href)))))
 317
 318 (defun eww-tag-link (cont)
 319   (eww-handle-link cont)
 320   (shr-generic cont))
 321
 322 (defun eww-tag-a (cont)
 323   (eww-handle-link cont)
 324   (let ((start (point)))
 325     (shr-tag-a cont)
 326     (put-text-property start (point) 'keymap eww-link-keymap)))
 327
 328 (defun eww-update-header-line-format ()
 329   (if eww-header-line-format
 330       (setq header-line-format
 331             (replace-regexp-in-string
 332              "%" "%%"
 333              ;; FIXME?  Title can be blank.  Default to, eg, last component
 334              ;; of url?
 335              (format-spec eww-header-line-format
 336                           `((?u . ,eww-current-url)
 337                             (?t . ,eww-current-title)))))
 338     (setq header-line-format nil)))
 339
 340 (defun eww-tag-title (cont)
 341   (setq eww-current-title "")
 342   (dolist (sub cont)
 343     (when (eq (car sub) 'text)
 344       (setq eww-current-title (concat eww-current-title (cdr sub)))))
 345   (eww-update-header-line-format))
 346
 347 (defun eww-tag-body (cont)
 348   (let* ((start (point))
 349          (fgcolor (cdr (or (assq :fgcolor cont)
 350                            (assq :text cont))))
 351          (bgcolor (cdr (assq :bgcolor cont)))
 352          (shr-stylesheet (list (cons 'color fgcolor)
 353                                (cons 'background-color bgcolor))))
 354     (shr-generic cont)
 355     (eww-colorize-region start (point) fgcolor bgcolor)))
 356
 357 (defun eww-colorize-region (start end fg &optional bg)
 358   (when (or fg bg)
 359     (let ((new-colors (shr-color-check fg bg)))
 360       (when new-colors
 361         (when fg
 362           (add-face-text-property start end
 363                                   (list :foreground (cadr new-colors))
 364                                   t))
 365         (when bg
 366           (add-face-text-property start end
 367                                   (list :background (car new-colors))
 368                                   t))))))
 369
 370 (defun eww-display-raw ()
 371   (let ((data (buffer-substring (point) (point-max))))
 372     (eww-setup-buffer)
 373     (let ((inhibit-read-only t))
 374       (insert data))
 375     (goto-char (point-min))))
 376
 377 (defun eww-display-image ()
 378   (let ((data (shr-parse-image-data)))
 379     (eww-setup-buffer)
 380     (let ((inhibit-read-only t))
 381       (shr-put-image data nil))
 382     (goto-char (point-min))))
 383
 384 (defun eww-setup-buffer ()
 385   (switch-to-buffer (get-buffer-create "*eww*"))
 386   (let ((inhibit-read-only t))
 387     (remove-overlays)
 388     (erase-buffer))
 389   (unless (eq major-mode 'eww-mode)
 390     (eww-mode))
 391   (setq-local eww-next-url nil)
 392   (setq-local eww-previous-url nil)
 393   (setq-local eww-up-url nil)
 394   (setq-local eww-home-url nil)
 395   (setq-local eww-start-url nil)
 396   (setq-local eww-contents-url nil))
 397
 398 (defun eww-view-source ()
 399   (interactive)
 400   (let ((buf (get-buffer-create "*eww-source*"))
 401         (source eww-current-source))
 402     (with-current-buffer buf
 403       (delete-region (point-min) (point-max))
 404       (insert (or eww-current-source "no source"))
 405       (goto-char (point-min))
 406       (when (fboundp 'html-mode)
 407         (html-mode)))
 408     (view-buffer buf)))
 409
 410 (defvar eww-mode-map
 411   (let ((map (make-sparse-keymap)))
 412     (suppress-keymap map)
 413     (define-key map "q" 'quit-window)
 414     (define-key map "g" 'eww-reload)
 415     (define-key map [?\t] 'shr-next-link)
 416     (define-key map [?\M-\t] 'shr-previous-link)
 417     (define-key map [delete] 'scroll-down-command)
 418     (define-key map [?\S-\ ] 'scroll-down-command)
 419     (define-key map "\177" 'scroll-down-command)
 420     (define-key map " " 'scroll-up-command)
 421     (define-key map "l" 'eww-back-url)
 422     (define-key map "r" 'eww-forward-url)
 423     (define-key map "n" 'eww-next-url)
 424     (define-key map "p" 'eww-previous-url)
 425     (define-key map "u" 'eww-up-url)
 426     (define-key map "t" 'eww-top-url)
 427     (define-key map "&" 'eww-browse-with-external-browser)
 428     (define-key map "d" 'eww-download)
 429     (define-key map "w" 'eww-copy-page-url)
 430     (define-key map "C" 'url-cookie-list)
 431     (define-key map "v" 'eww-view-source)
 432     (define-key map "H" 'eww-list-histories)
 433
 434     (define-key map "b" 'eww-add-bookmark)
 435     (define-key map "B" 'eww-list-bookmarks)
 436     (define-key map [(meta n)] 'eww-next-bookmark)
 437     (define-key map [(meta p)] 'eww-previous-bookmark)
 438
 439     (easy-menu-define nil map ""
 440       '("Eww"
 441         ["Exit" eww-quit t]
 442         ["Close browser" quit-window t]
 443         ["Reload" eww-reload t]
 444         ["Back to previous page" eww-back-url
 445          :active (not (zerop (length eww-history)))]
 446         ["Forward to next page" eww-forward-url
 447          :active (not (zerop eww-history-position))]
 448         ["Browse with external browser" eww-browse-with-external-browser t]
 449         ["Download" eww-download t]
 450         ["View page source" eww-view-source]
 451         ["Copy page URL" eww-copy-page-url t]
 452         ["List histories" eww-list-histories t]
 453         ["Add bookmark" eww-add-bookmark t]
 454         ["List bookmarks" eww-list-bookmarks t]
 455         ["List cookies" url-cookie-list t]))
 456     map))
 457
 458 (defvar eww-tool-bar-map
 459   (let ((map (make-sparse-keymap)))
 460     (dolist (tool-bar-item
 461              '((eww-quit . "close")
 462                (eww-reload . "refresh")
 463                (eww-back-url . "left-arrow")
 464                (eww-forward-url . "right-arrow")
 465                (eww-view-source . "show")
 466                (eww-copy-page-url . "copy")
 467                (eww-add-bookmark . "bookmark_add"))) ;; ...
 468       (tool-bar-local-item-from-menu
 469        (car tool-bar-item) (cdr tool-bar-item) map eww-mode-map))
 470     map)
 471   "Tool bar for `eww-mode'.")
 472
 473 (define-derived-mode eww-mode nil "eww"
 474   "Mode for browsing the web.
 475
 476 \\{eww-mode-map}"
 477   ;; FIXME?  This seems a strange default.
 478   (setq-local eww-current-url 'author)
 479   (setq-local eww-current-dom nil)
 480   (setq-local eww-current-source nil)
 481   (setq-local eww-current-title "")
 482   (setq-local browse-url-browser-function 'eww-browse-url)
 483   (setq-local after-change-functions 'eww-process-text-input)
 484   (setq-local eww-history nil)
 485   (setq-local eww-history-position 0)
 486   (when (boundp 'tool-bar-map)
 487    (setq-local tool-bar-map eww-tool-bar-map))
 488   (buffer-disable-undo)
 489   ;;(setq buffer-read-only t)
 490   )
 491
 492 ;;;###autoload
 493 (defun eww-browse-url (url &optional _new-window)
 494   (when (and (equal major-mode 'eww-mode)
 495              eww-current-url)
 496     (eww-save-history))
 497   (eww url))
 498
 499 (defun eww-back-url ()
 500   "Go to the previously displayed page."
 501   (interactive)
 502   (when (>= eww-history-position (length eww-history))
 503     (user-error "No previous page"))
 504   (eww-save-history)
 505   (setq eww-history-position (+ eww-history-position 2))
 506   (eww-restore-history (elt eww-history (1- eww-history-position))))
 507
 508 (defun eww-forward-url ()
 509   "Go to the next displayed page."
 510   (interactive)
 511   (when (zerop eww-history-position)
 512     (user-error "No next page"))
 513   (eww-save-history)
 514   (eww-restore-history (elt eww-history (1- eww-history-position))))
 515
 516 (defun eww-restore-history (elem)
 517   (let ((inhibit-read-only t))
 518     (erase-buffer)
 519     (insert (plist-get elem :text))
 520     (setq eww-current-source (plist-get elem :source))
 521     (setq eww-current-dom (plist-get elem :dom))
 522     (goto-char (plist-get elem :point))
 523     (setq eww-current-url (plist-get elem :url)
 524           eww-current-title (plist-get elem :title))
 525     (eww-update-header-line-format)))
 526
 527 (defun eww-next-url ()
 528   "Go to the page marked `next'.
 529 A page is marked `next' if rel=\"next\" appears in a <link>
 530 or <a> tag."
 531   (interactive)
 532   (if eww-next-url
 533       (eww-browse-url (shr-expand-url eww-next-url eww-current-url))
 534     (user-error "No `next' on this page")))
 535
 536 (defun eww-previous-url ()
 537   "Go to the page marked `previous'.
 538 A page is marked `previous' if rel=\"previous\" appears in a <link>
 539 or <a> tag."
 540   (interactive)
 541   (if eww-previous-url
 542       (eww-browse-url (shr-expand-url eww-previous-url eww-current-url))
 543     (user-error "No `previous' on this page")))
 544
 545 (defun eww-up-url ()
 546   "Go to the page marked `up'.
 547 A page is marked `up' if rel=\"up\" appears in a <link>
 548 or <a> tag."
 549   (interactive)
 550   (if eww-up-url
 551       (eww-browse-url (shr-expand-url eww-up-url eww-current-url))
 552     (user-error "No `up' on this page")))
 553
 554 (defun eww-top-url ()
 555   "Go to the page marked `top'.
 556 A page is marked `top' if rel=\"start\", rel=\"home\", or rel=\"contents\"
 557 appears in a <link> or <a> tag."
 558   (interactive)
 559   (let ((best-url (or eww-start-url
 560                       eww-contents-url
 561                       eww-home-url)))
 562     (if best-url
 563         (eww-browse-url (shr-expand-url best-url eww-current-url))
 564       (user-error "No `top' for this page"))))
 565
 566 (defun eww-reload ()
 567   "Reload the current page."
 568   (interactive)
 569   (url-retrieve eww-current-url 'eww-render
 570                 (list eww-current-url (point))))
 571
 572 ;; Form support.
 573
 574 (defvar eww-form nil)
 575
 576 (defvar eww-submit-map
 577   (let ((map (make-sparse-keymap)))
 578     (define-key map "\r" 'eww-submit)
 579     (define-key map [(control c) (control c)] 'eww-submit)
 580     map))
 581
 582 (defvar eww-checkbox-map
 583   (let ((map (make-sparse-keymap)))
 584     (define-key map " " 'eww-toggle-checkbox)
 585     (define-key map "\r" 'eww-toggle-checkbox)
 586     (define-key map [(control c) (control c)] 'eww-submit)
 587     map))
 588
 589 (defvar eww-text-map
 590   (let ((map (make-keymap)))
 591     (set-keymap-parent map text-mode-map)
 592     (define-key map "\r" 'eww-submit)
 593     (define-key map [(control a)] 'eww-beginning-of-text)
 594     (define-key map [(control c) (control c)] 'eww-submit)
 595     (define-key map [(control e)] 'eww-end-of-text)
 596     (define-key map [?\t] 'shr-next-link)
 597     (define-key map [?\M-\t] 'shr-previous-link)
 598     map))
 599
 600 (defvar eww-textarea-map
 601   (let ((map (make-keymap)))
 602     (set-keymap-parent map text-mode-map)
 603     (define-key map "\r" 'forward-line)
 604     (define-key map [(control c) (control c)] 'eww-submit)
 605     (define-key map [?\t] 'shr-next-link)
 606     (define-key map [?\M-\t] 'shr-previous-link)
 607     map))
 608
 609 (defvar eww-select-map
 610   (let ((map (make-sparse-keymap)))
 611     (define-key map "\r" 'eww-change-select)
 612     (define-key map [(control c) (control c)] 'eww-submit)
 613     map))
 614
 615 (defun eww-beginning-of-text ()
 616   "Move to the start of the input field."
 617   (interactive)
 618   (goto-char (eww-beginning-of-field)))
 619
 620 (defun eww-end-of-text ()
 621   "Move to the end of the text in the input field."
 622   (interactive)
 623   (goto-char (eww-end-of-field))
 624   (let ((start (eww-beginning-of-field)))
 625     (while (and (equal (following-char) ? )
 626                 (> (point) start))
 627       (forward-char -1))
 628     (when (> (point) start)
 629       (forward-char 1))))
 630
 631 (defun eww-beginning-of-field ()
 632   (cond
 633    ((bobp)
 634     (point))
 635    ((not (eq (get-text-property (point) 'eww-form)
 636              (get-text-property (1- (point)) 'eww-form)))
 637     (point))
 638    (t
 639     (previous-single-property-change
 640      (point) 'eww-form nil (point-min)))))
 641
 642 (defun eww-end-of-field ()
 643   (1- (next-single-property-change
 644        (point) 'eww-form nil (point-max))))
 645
 646 (defun eww-tag-form (cont)
 647   (let ((eww-form
 648          (list (assq :method cont)
 649                (assq :action cont)))
 650         (start (point)))
 651     (shr-ensure-paragraph)
 652     (shr-generic cont)
 653     (unless (bolp)
 654       (insert "\n"))
 655     (insert "\n")
 656     (when (> (point) start)
 657       (put-text-property start (1+ start)
 658                          'eww-form eww-form))))
 659
 660 (defun eww-form-submit (cont)
 661   (let ((start (point))
 662         (value (cdr (assq :value cont))))
 663     (setq value
 664           (if (zerop (length value))
 665               "Submit"
 666             value))
 667     (insert value)
 668     (add-face-text-property start (point) 'eww-form-submit)
 669     (put-text-property start (point) 'eww-form
 670                        (list :eww-form eww-form
 671                              :value value
 672                              :type "submit"
 673                              :name (cdr (assq :name cont))))
 674     (put-text-property start (point) 'keymap eww-submit-map)
 675     (insert " ")))
 676
 677 (defun eww-form-checkbox (cont)
 678   (let ((start (point)))
 679     (if (cdr (assq :checked cont))
 680         (insert eww-form-checkbox-selected-symbol)
 681       (insert eww-form-checkbox-symbol))
 682     (add-face-text-property start (point) 'eww-form-checkbox)
 683     (put-text-property start (point) 'eww-form
 684                        (list :eww-form eww-form
 685                              :value (cdr (assq :value cont))
 686                              :type (downcase (cdr (assq :type cont)))
 687                              :checked (cdr (assq :checked cont))
 688                              :name (cdr (assq :name cont))))
 689     (put-text-property start (point) 'keymap eww-checkbox-map)
 690     (insert " ")))
 691
 692 (defun eww-form-text (cont)
 693   (let ((start (point))
 694         (type (downcase (or (cdr (assq :type cont))
 695                             "text")))
 696         (value (or (cdr (assq :value cont)) ""))
 697         (width (string-to-number
 698                 (or (cdr (assq :size cont))
 699                     "40")))
 700         (readonly-property (if (or (cdr (assq :disabled cont))
 701                                    (cdr (assq :readonly cont)))
 702                                'read-only
 703                              'inhibit-read-only)))
 704     (insert value)
 705     (when (< (length value) width)
 706       (insert (make-string (- width (length value)) ? )))
 707     (put-text-property start (point) 'face 'eww-form-text)
 708     (put-text-property start (point) 'local-map eww-text-map)
 709     (put-text-property start (point) readonly-property t)
 710     (put-text-property start (point) 'eww-form
 711                        (list :eww-form eww-form
 712                              :value value
 713                              :type type
 714                              :name (cdr (assq :name cont))))
 715     (insert " ")))
 716
 717 (defconst eww-text-input-types '("text" "password" "textarea"
 718                                  "color" "date" "datetime" "datetime-local"
 719                                  "email" "month" "number" "search" "tel"
 720                                  "time" "url" "week")
 721   "List of input types which represent a text input.
 722 See URL `https://developer.mozilla.org/en-US/docs/Web/HTML/Element/Input'.")
 723
 724 (defun eww-process-text-input (beg end length)
 725   (let* ((form (get-text-property (min (1+ end) (point-max)) 'eww-form))
 726          (properties (text-properties-at end))
 727          (type (plist-get form :type)))
 728     (when (and form
 729                (member type eww-text-input-types))
 730       (cond
 731        ((zerop length)
 732         ;; Delete some space at the end.
 733         (save-excursion
 734           (goto-char
 735            (if (equal type "textarea")
 736                (1- (line-end-position))
 737              (eww-end-of-field)))
 738           (let ((new (- end beg)))
 739             (while (and (> new 0)
 740                         (eql (following-char) ? ))
 741               (delete-region (point) (1+ (point)))
 742               (setq new (1- new))))
 743           (set-text-properties beg end properties)))
 744        ((> length 0)
 745         ;; Add padding.
 746         (save-excursion
 747           (goto-char
 748            (if (equal type "textarea")
 749                (1- (line-end-position))
 750              (eww-end-of-field)))
 751           (let ((start (point)))
 752             (insert (make-string length ? ))
 753             (set-text-properties start (point) properties)))))
 754       (let ((value (buffer-substring-no-properties
 755                     (eww-beginning-of-field)
 756                     (eww-end-of-field))))
 757         (when (string-match " +\\'" value)
 758           (setq value (substring value 0 (match-beginning 0))))
 759         (plist-put form :value value)
 760         (when (equal type "password")
 761           ;; Display passwords as asterisks.
 762           (let ((start (eww-beginning-of-field)))
 763             (put-text-property start (+ start (length value))
 764                                'display (make-string (length value) ?*))))))))
 765
 766 (defun eww-tag-textarea (cont)
 767   (let ((start (point))
 768         (value (or (cdr (assq :value cont)) ""))
 769         (lines (string-to-number
 770                 (or (cdr (assq :rows cont))
 771                     "10")))
 772         (width (string-to-number
 773                 (or (cdr (assq :cols cont))
 774                     "10")))
 775         end)
 776     (shr-ensure-newline)
 777     (insert value)
 778     (shr-ensure-newline)
 779     (when (< (count-lines start (point)) lines)
 780       (dotimes (i (- lines (count-lines start (point))))
 781         (insert "\n")))
 782     (setq end (point-marker))
 783     (goto-char start)
 784     (while (< (point) end)
 785       (end-of-line)
 786       (let ((pad (- width (- (point) (line-beginning-position)))))
 787         (when (> pad 0)
 788           (insert (make-string pad ? ))))
 789       (add-face-text-property (line-beginning-position)
 790                               (point) 'eww-form-textarea)
 791       (put-text-property (line-beginning-position) (point)
 792                          'local-map eww-textarea-map)
 793       (forward-line 1))
 794     (put-text-property start (point) 'eww-form
 795                        (list :eww-form eww-form
 796                              :value value
 797                              :type "textarea"
 798                              :name (cdr (assq :name cont))))))
 799
 800 (defun eww-tag-input (cont)
 801   (let ((type (downcase (or (cdr (assq :type cont))
 802                              "text")))
 803         (start (point)))
 804     (cond
 805      ((or (equal type "checkbox")
 806           (equal type "radio"))
 807       (eww-form-checkbox cont))
 808      ((equal type "submit")
 809       (eww-form-submit cont))
 810      ((equal type "hidden")
 811       (let ((form eww-form)
 812             (name (cdr (assq :name cont))))
 813         ;; Don't add <input type=hidden> elements repeatedly.
 814         (while (and form
 815                     (or (not (consp (car form)))
 816                         (not (eq (caar form) 'hidden))
 817                         (not (equal (plist-get (cdr (car form)) :name)
 818                                     name))))
 819           (setq form (cdr form)))
 820         (unless form
 821           (nconc eww-form (list
 822                            (list 'hidden
 823                                  :name name
 824                                  :value (cdr (assq :value cont))))))))
 825      (t
 826       (eww-form-text cont)))
 827     (unless (= start (point))
 828       (put-text-property start (1+ start) 'help-echo "Input field"))))
 829
 830 (defun eww-tag-select (cont)
 831   (shr-ensure-paragraph)
 832   (let ((menu (list :name (cdr (assq :name cont))
 833                     :eww-form eww-form))
 834         (options nil)
 835         (start (point))
 836         (max 0)
 837         opelem)
 838     (if (eq (car (car cont)) 'optgroup)
 839         (dolist (groupelem cont)
 840           (unless (cdr (assq :disabled (cdr groupelem)))
 841             (setq opelem (append opelem (cdr (cdr groupelem))))))
 842       (setq opelem cont))
 843     (dolist (elem opelem)
 844       (when (eq (car elem) 'option)
 845         (when (cdr (assq :selected (cdr elem)))
 846           (nconc menu (list :value
 847                             (cdr (assq :value (cdr elem))))))
 848         (let ((display (or (cdr (assq 'text (cdr elem))) "")))
 849           (setq max (max max (length display)))
 850           (push (list 'item
 851                       :value (cdr (assq :value (cdr elem)))
 852                       :display display)
 853                 options))))
 854     (when options
 855       (setq options (nreverse options))
 856       ;; If we have no selected values, default to the first value.
 857       (unless (plist-get menu :value)
 858         (nconc menu (list :value (nth 2 (car options)))))
 859       (nconc menu options)
 860       (let ((selected (eww-select-display menu)))
 861         (insert selected
 862                 (make-string (- max (length selected)) ? )))
 863       (put-text-property start (point) 'eww-form menu)
 864       (add-face-text-property start (point) 'eww-form-select)
 865       (put-text-property start (point) 'keymap eww-select-map)
 866       (unless (= start (point))
 867        (put-text-property start (1+ start) 'help-echo "select field"))
 868       (shr-ensure-paragraph))))
 869
 870 (defun eww-select-display (select)
 871   (let ((value (plist-get select :value))
 872         display)
 873     (dolist (elem select)
 874       (when (and (consp elem)
 875                  (eq (car elem) 'item)
 876                  (equal value (plist-get (cdr elem) :value)))
 877         (setq display (plist-get (cdr elem) :display))))
 878     display))
 879
 880 (defun eww-change-select ()
 881   "Change the value of the select drop-down menu under point."
 882   (interactive)
 883   (let* ((input (get-text-property (point) 'eww-form))
 884          (completion-ignore-case t)
 885          (options
 886           (delq nil
 887                 (mapcar (lambda (elem)
 888                           (and (consp elem)
 889                                (eq (car elem) 'item)
 890                                (cons (plist-get (cdr elem) :display)
 891                                      (plist-get (cdr elem) :value))))
 892                         input)))
 893          (display
 894           (completing-read "Change value: " options nil 'require-match))
 895          (inhibit-read-only t))
 896     (plist-put input :value (cdr (assoc-string display options t)))
 897     (goto-char
 898      (eww-update-field display))))
 899
 900 (defun eww-update-field (string)
 901   (let ((properties (text-properties-at (point)))
 902         (start (eww-beginning-of-field))
 903         (end (1+ (eww-end-of-field))))
 904     (delete-region start end)
 905     (insert string
 906             (make-string (- (- end start) (length string)) ? ))
 907     (set-text-properties start end properties)
 908     start))
 909
 910 (defun eww-toggle-checkbox ()
 911   "Toggle the value of the checkbox under point."
 912   (interactive)
 913   (let* ((input (get-text-property (point) 'eww-form))
 914          (type (plist-get input :type)))
 915     (if (equal type "checkbox")
 916         (goto-char
 917          (1+
 918           (if (plist-get input :checked)
 919               (progn
 920                 (plist-put input :checked nil)
 921                 (eww-update-field eww-form-checkbox-symbol))
 922             (plist-put input :checked t)
 923             (eww-update-field eww-form-checkbox-selected-symbol))))
 924       ;; Radio button.  Switch all other buttons off.
 925       (let ((name (plist-get input :name)))
 926         (save-excursion
 927           (dolist (elem (eww-inputs (plist-get input :eww-form)))
 928             (when (equal (plist-get (cdr elem) :name) name)
 929               (goto-char (car elem))
 930               (if (not (eq (cdr elem) input))
 931                   (progn
 932                     (plist-put input :checked nil)
 933                     (eww-update-field eww-form-checkbox-symbol))
 934                 (plist-put input :checked t)
 935                 (eww-update-field eww-form-checkbox-selected-symbol)))))
 936         (forward-char 1)))))
 937
 938 (defun eww-inputs (form)
 939   (let ((start (point-min))
 940         (inputs nil))
 941     (while (and start
 942                 (< start (point-max)))
 943       (when (or (get-text-property start 'eww-form)
 944                 (setq start (next-single-property-change start 'eww-form)))
 945         (when (eq (plist-get (get-text-property start 'eww-form) :eww-form)
 946                   form)
 947           (push (cons start (get-text-property start 'eww-form))
 948                 inputs))
 949         (setq start (next-single-property-change start 'eww-form))))
 950     (nreverse inputs)))
 951
 952 (defun eww-input-value (input)
 953   (let ((type (plist-get input :type))
 954         (value (plist-get input :value)))
 955     (cond
 956      ((equal type "textarea")
 957       (with-temp-buffer
 958         (insert value)
 959         (goto-char (point-min))
 960         (while (re-search-forward "^ +\n\\| +$" nil t)
 961           (replace-match "" t t))
 962         (buffer-string)))
 963      (t
 964       (if (string-match " +\\'" value)
 965           (substring value 0 (match-beginning 0))
 966         value)))))
 967
 968 (defun eww-submit ()
 969   "Submit the current form."
 970   (interactive)
 971   (let* ((this-input (get-text-property (point) 'eww-form))
 972          (form (plist-get this-input :eww-form))
 973          values next-submit)
 974     (dolist (elem (sort (eww-inputs form)
 975                          (lambda (o1 o2)
 976                            (< (car o1) (car o2)))))
 977       (let* ((input (cdr elem))
 978              (input-start (car elem))
 979              (name (plist-get input :name)))
 980         (when name
 981           (cond
 982            ((member (plist-get input :type) '("checkbox" "radio"))
 983             (when (plist-get input :checked)
 984               (push (cons name (plist-get input :value))
 985                     values)))
 986            ((equal (plist-get input :type) "submit")
 987             ;; We want the values from buttons if we hit a button if
 988             ;; we hit enter on it, or if it's the first button after
 989             ;; the field we did hit return on.
 990             (when (or (eq input this-input)
 991                       (and (not (eq input this-input))
 992                            (null next-submit)
 993                            (> input-start (point))))
 994               (setq next-submit t)
 995               (push (cons name (plist-get input :value))
 996                     values)))
 997            (t
 998             (push (cons name (eww-input-value input))
 999                   values))))))
1000     (dolist (elem form)
1001       (when (and (consp elem)
1002                  (eq (car elem) 'hidden))
1003         (push (cons (plist-get (cdr elem) :name)
1004                     (plist-get (cdr elem) :value))
1005               values)))
1006     (if (and (stringp (cdr (assq :method form)))
1007              (equal (downcase (cdr (assq :method form))) "post"))
1008         (let ((url-request-method "POST")
1009               (url-request-extra-headers
1010                '(("Content-Type" . "application/x-www-form-urlencoded")))
1011               (url-request-data (mm-url-encode-www-form-urlencoded values)))
1012           (eww-browse-url (shr-expand-url (cdr (assq :action form))
1013                                           eww-current-url)))
1014       (eww-browse-url
1015        (concat
1016         (if (cdr (assq :action form))
1017             (shr-expand-url (cdr (assq :action form))
1018                             eww-current-url)
1019           eww-current-url)
1020         "?"
1021         (mm-url-encode-www-form-urlencoded values))))))
1022
1023 (defun eww-browse-with-external-browser (&optional url)
1024   "Browse the current URL with an external browser.
1025 The browser to used is specified by the `shr-external-browser' variable."
1026   (interactive)
1027   (funcall shr-external-browser (or url eww-current-url)))
1028
1029 (defun eww-follow-link (&optional external mouse-event)
1030   "Browse the URL under point.
1031 If EXTERNAL, browse the URL using `shr-external-browser'."
1032   (interactive (list current-prefix-arg last-nonmenu-event))
1033   (mouse-set-point mouse-event)
1034   (let ((url (get-text-property (point) 'shr-url)))
1035     (cond
1036      ((not url)
1037       (message "No link under point"))
1038      ((string-match "^mailto:" url)
1039       (browse-url-mail url))
1040      (external
1041       (funcall shr-external-browser url))
1042      ;; This is a #target url in the same page as the current one.
1043      ((and (url-target (url-generic-parse-url url))
1044            (eww-same-page-p url eww-current-url))
1045       (eww-save-history)
1046       (eww-display-html 'utf8 url eww-current-dom))
1047      (t
1048       (eww-browse-url url)))))
1049
1050 (defun eww-same-page-p (url1 url2)
1051   "Return non-nil if both URLs represent the same page.
1052 Differences in #targets are ignored."
1053   (let ((obj1 (url-generic-parse-url url1))
1054         (obj2 (url-generic-parse-url url2)))
1055     (setf (url-target obj1) nil)
1056     (setf (url-target obj2) nil)
1057     (equal (url-recreate-url obj1) (url-recreate-url obj2))))
1058
1059 (defun eww-copy-page-url ()
1060   (interactive)
1061   (message "%s" eww-current-url)
1062   (kill-new eww-current-url))
1063
1064 (defun eww-download ()
1065   "Download URL under point to `eww-download-directory'."
1066   (interactive)
1067   (let ((url (get-text-property (point) 'shr-url)))
1068     (if (not url)
1069         (message "No URL under point")
1070       (url-retrieve url 'eww-download-callback (list url)))))
1071
1072 (defun eww-download-callback (status url)
1073   (unless (plist-get status :error)
1074     (let* ((obj (url-generic-parse-url url))
1075            (path (car (url-path-and-query obj)))
1076            (file (eww-make-unique-file-name (file-name-nondirectory path)
1077                                             eww-download-directory)))
1078       (write-file file)
1079       (message "Saved %s" file))))
1080
1081 (defun eww-make-unique-file-name (file directory)
1082     (cond
1083      ((zerop (length file))
1084       (setq file "!"))
1085      ((string-match "\\`[.]" file)
1086       (setq file (concat "!" file))))
1087     (let ((count 1))
1088       (while (file-exists-p (expand-file-name file directory))
1089         (setq file
1090               (if (string-match "\\`\\(.*\\)\\([.][^.]+\\)" file)
1091                   (format "%s(%d)%s" (match-string 1 file)
1092                           count (match-string 2 file))
1093                 (format "%s(%d)" file count)))
1094         (setq count (1+ count)))
1095       (expand-file-name file directory)))
1096
1097 ;;; Bookmarks code
1098
1099 (defvar eww-bookmarks nil)
1100
1101 (defun eww-add-bookmark ()
1102   "Add the current page to the bookmarks."
1103   (interactive)
1104   (eww-read-bookmarks)
1105   (dolist (bookmark eww-bookmarks)
1106     (when (equal eww-current-url
1107                  (plist-get bookmark :url))
1108       (user-error "Already bookmarked")))
1109   (if (y-or-n-p "bookmark this page? ")
1110       (progn
1111         (let ((title (replace-regexp-in-string "[\n\t\r]" " " eww-current-title)))
1112           (setq title (replace-regexp-in-string "\\` +\\| +\\'" "" title))
1113           (push (list :url eww-current-url
1114                       :title title
1115                       :time (current-time-string))
1116                 eww-bookmarks))
1117         (eww-write-bookmarks)
1118         (message "Bookmarked %s (%s)" eww-current-url eww-current-title))))
1119
1120 (defun eww-write-bookmarks ()
1121   (with-temp-file (expand-file-name "eww-bookmarks" user-emacs-directory)
1122     (insert ";; Auto-generated file; don't edit\n")
1123     (pp eww-bookmarks (current-buffer))))
1124
1125 (defun eww-read-bookmarks ()
1126   (let ((file (expand-file-name "eww-bookmarks" user-emacs-directory)))
1127     (setq eww-bookmarks
1128           (unless (zerop (or (nth 7 (file-attributes file)) 0))
1129             (with-temp-buffer
1130               (insert-file-contents file)
1131               (read (current-buffer)))))))
1132
1133 (defun eww-list-bookmarks ()
1134   "Display the bookmarks."
1135   (interactive)
1136   (eww-bookmark-prepare)
1137   (pop-to-buffer "*eww bookmarks*"))
1138
1139 (defun eww-bookmark-prepare ()
1140   (eww-read-bookmarks)
1141   (unless eww-bookmarks
1142     (user-error "No bookmarks are defined"))
1143   (set-buffer (get-buffer-create "*eww bookmarks*"))
1144   (eww-bookmark-mode)
1145   (let ((format "%-40s %s")
1146         (inhibit-read-only t)
1147         start url)
1148     (erase-buffer)
1149     (setq header-line-format (concat " " (format format "URL" "Title")))
1150     (dolist (bookmark eww-bookmarks)
1151       (setq start (point))
1152       (setq url (plist-get bookmark :url))
1153       (when (> (length url) 40)
1154         (setq url (substring url 0 40)))
1155       (insert (format format url
1156                       (plist-get bookmark :title))
1157               "\n")
1158       (put-text-property start (1+ start) 'eww-bookmark bookmark))
1159     (goto-char (point-min))))
1160
1161 (defvar eww-bookmark-kill-ring nil)
1162
1163 (defun eww-bookmark-kill ()
1164   "Kill the current bookmark."
1165   (interactive)
1166   (let* ((start (line-beginning-position))
1167          (bookmark (get-text-property start 'eww-bookmark))
1168          (inhibit-read-only t))
1169     (unless bookmark
1170       (user-error "No bookmark on the current line"))
1171     (forward-line 1)
1172     (push (buffer-substring start (point)) eww-bookmark-kill-ring)
1173     (delete-region start (point))
1174     (setq eww-bookmarks (delq bookmark eww-bookmarks))
1175     (eww-write-bookmarks)))
1176
1177 (defun eww-bookmark-yank ()
1178   "Yank a previously killed bookmark to the current line."
1179   (interactive)
1180   (unless eww-bookmark-kill-ring
1181     (user-error "No previously killed bookmark"))
1182   (beginning-of-line)
1183   (let ((inhibit-read-only t)
1184         (start (point))
1185         bookmark)
1186     (insert (pop eww-bookmark-kill-ring))
1187     (setq bookmark (get-text-property start 'eww-bookmark))
1188     (if (= start (point-min))
1189         (push bookmark eww-bookmarks)
1190       (let ((line (count-lines start (point))))
1191         (setcdr (nthcdr (1- line) eww-bookmarks)
1192                 (cons bookmark (nthcdr line eww-bookmarks)))))
1193     (eww-write-bookmarks)))
1194
1195 (defun eww-bookmark-browse ()
1196   "Browse the bookmark under point in eww."
1197   (interactive)
1198   (let ((bookmark (get-text-property (line-beginning-position) 'eww-bookmark)))
1199     (unless bookmark
1200       (user-error "No bookmark on the current line"))
1201     (quit-window)
1202     (eww-browse-url (plist-get bookmark :url))))
1203
1204 (defun eww-next-bookmark ()
1205   "Go to the next bookmark in the list."
1206   (interactive)
1207   (let ((first nil)
1208         bookmark)
1209     (unless (get-buffer "*eww bookmarks*")
1210       (setq first t)
1211       (eww-bookmark-prepare))
1212     (with-current-buffer (get-buffer "*eww bookmarks*")
1213       (when (and (not first)
1214                  (not (eobp)))
1215         (forward-line 1))
1216       (setq bookmark (get-text-property (line-beginning-position)
1217                                         'eww-bookmark))
1218       (unless bookmark
1219         (user-error "No next bookmark")))
1220     (eww-browse-url (plist-get bookmark :url))))
1221
1222 (defun eww-previous-bookmark ()
1223   "Go to the previous bookmark in the list."
1224   (interactive)
1225   (let ((first nil)
1226         bookmark)
1227     (unless (get-buffer "*eww bookmarks*")
1228       (setq first t)
1229       (eww-bookmark-prepare))
1230     (with-current-buffer (get-buffer "*eww bookmarks*")
1231       (if first
1232           (goto-char (point-max))
1233         (beginning-of-line))
1234       ;; On the final line.
1235       (when (eolp)
1236         (forward-line -1))
1237       (if (bobp)
1238           (user-error "No previous bookmark")
1239         (forward-line -1))
1240       (setq bookmark (get-text-property (line-beginning-position)
1241                                         'eww-bookmark)))
1242     (eww-browse-url (plist-get bookmark :url))))
1243
1244 (defvar eww-bookmark-mode-map
1245   (let ((map (make-sparse-keymap)))
1246     (suppress-keymap map)
1247     (define-key map "q" 'quit-window)
1248     (define-key map [(control k)] 'eww-bookmark-kill)
1249     (define-key map [(control y)] 'eww-bookmark-yank)
1250     (define-key map "\r" 'eww-bookmark-browse)
1251
1252     (easy-menu-define nil map
1253       "Menu for `eww-bookmark-mode-map'."
1254       '("Eww Bookmark"
1255         ["Exit" quit-window t]
1256         ["Browse" eww-bookmark-browse
1257          :active (get-text-property (line-beginning-position) 'eww-bookmark)]
1258         ["Kill" eww-bookmark-kill
1259          :active (get-text-property (line-beginning-position) 'eww-bookmark)]
1260         ["Yank" eww-bookmark-yank
1261          :active eww-bookmark-kill-ring]))
1262     map))
1263
1264 (define-derived-mode eww-bookmark-mode nil "eww bookmarks"
1265   "Mode for listing bookmarks.
1266
1267 \\{eww-bookmark-mode-map}"
1268   (buffer-disable-undo)
1269   (setq buffer-read-only t
1270         truncate-lines t))
1271
1272 ;;; History code
1273
1274 (defun eww-save-history ()
1275   (push (list :url eww-current-url
1276               :title eww-current-title
1277               :point (point)
1278               :dom eww-current-dom
1279               :source eww-current-source
1280               :text (buffer-string))
1281         eww-history))
1282
1283 (defun eww-list-histories ()
1284   "List the eww-histories."
1285   (interactive)
1286   (when (null eww-history)
1287     (error "No eww-histories are defined"))
1288   (let ((eww-history-trans eww-history))
1289     (set-buffer (get-buffer-create "*eww history*"))
1290     (eww-history-mode)
1291     (let ((inhibit-read-only t)
1292           (domain-length 0)
1293           (title-length 0)
1294           url title format start)
1295       (erase-buffer)
1296       (dolist (history eww-history-trans)
1297         (setq start (point))
1298         (setq domain-length (max domain-length (length (plist-get history :url))))
1299         (setq title-length (max title-length (length (plist-get history :title)))))
1300       (setq format (format "%%-%ds %%-%ds" title-length domain-length)
1301             header-line-format
1302             (concat " " (format format "Title" "URL")))
1303       (dolist (history eww-history-trans)
1304         (setq start (point))
1305         (setq url (plist-get history :url))
1306         (setq title (plist-get history :title))
1307         (insert (format format title url))
1308         (insert "\n")
1309         (put-text-property start (1+ start) 'eww-history history))
1310       (goto-char (point-min)))
1311     (pop-to-buffer "*eww history*")))
1312
1313 (defun eww-history-browse ()
1314   "Browse the history under point in eww."
1315   (interactive)
1316   (let ((history (get-text-property (line-beginning-position) 'eww-history)))
1317     (unless history
1318       (error "No history on the current line"))
1319     (quit-window)
1320     (eww-restore-history history)))
1321
1322 (defvar eww-history-mode-map
1323   (let ((map (make-sparse-keymap)))
1324     (suppress-keymap map)
1325     (define-key map "q" 'quit-window)
1326     (define-key map "\r" 'eww-history-browse)
1327 ;;    (define-key map "n" 'next-error-no-select)
1328 ;;    (define-key map "p" 'previous-error-no-select)
1329
1330     (easy-menu-define nil map
1331       "Menu for `eww-history-mode-map'."
1332       '("Eww History"
1333         ["Exit" quit-window t]
1334         ["Browse" eww-history-browse
1335          :active (get-text-property (line-beginning-position) 'eww-history)]))
1336     map))
1337
1338 (define-derived-mode eww-history-mode nil "eww history"
1339   "Mode for listing eww-histories.
1340
1341 \\{eww-history-mode-map}"
1342   (buffer-disable-undo)
1343   (setq buffer-read-only t
1344         truncate-lines t))
1345
1346 (provide 'eww)
1347
1348 ;;; eww.el ends here