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266c63b5 AK |
1 | ;;; eww.el --- Emacs Web Wowser |
2 | ||
3 | ;; Copyright (C) 2013 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)) | |
7545bd25 | 28 | (require 'format-spec) |
266c63b5 AK |
29 | (require 'shr) |
30 | (require 'url) | |
2644071e | 31 | (require 'mm-url) |
266c63b5 | 32 | |
c74cb344 G |
33 | (defgroup eww nil |
34 | "Emacs Web Wowser" | |
35 | :version "24.4" | |
36 | :group 'hypermedia | |
37 | :prefix "eww-") | |
38 | ||
39 | (defcustom eww-header-line-format "%t: %u" | |
40 | "Header line format. | |
41 | - %t is replaced by the title. | |
42 | - %u is replaced by the URL." | |
a3ca09b9 IK |
43 | :version "24.4" |
44 | :group 'eww | |
45 | :type 'string) | |
46 | ||
47 | (defcustom eww-search-prefix "https://duckduckgo.com/html/?q=" | |
48 | "Prefix URL to search engine" | |
49 | :version "24.4" | |
c74cb344 G |
50 | :group 'eww |
51 | :type 'string) | |
52 | ||
970ad972 G |
53 | (defface eww-form-submit |
54 | '((((type x w32 ns) (class color)) ; Like default mode line | |
55 | :box (:line-width 2 :style released-button) | |
56 | :background "#808080" :foreground "black")) | |
57 | "Face for eww buffer buttons." | |
58 | :version "24.4" | |
59 | :group 'eww) | |
60 | ||
61 | (defface eww-form-checkbox | |
62 | '((((type x w32 ns) (class color)) ; Like default mode line | |
63 | :box (:line-width 2 :style released-button) | |
64 | :background "lightgrey" :foreground "black")) | |
65 | "Face for eww buffer buttons." | |
66 | :version "24.4" | |
67 | :group 'eww) | |
68 | ||
69 | (defface eww-form-select | |
be2aa135 LMI |
70 | '((((type x w32 ns) (class color)) ; Like default mode line |
71 | :box (:line-width 2 :style released-button) | |
72 | :background "lightgrey" :foreground "black")) | |
73 | "Face for eww buffer buttons." | |
74 | :version "24.4" | |
75 | :group 'eww) | |
76 | ||
970ad972 G |
77 | (defface eww-form-text |
78 | '((t (:background "#505050" | |
79 | :foreground "white" | |
80 | :box (:line-width 1)))) | |
81 | "Face for eww text inputs." | |
82 | :version "24.4" | |
83 | :group 'eww) | |
84 | ||
266c63b5 | 85 | (defvar eww-current-url nil) |
c74cb344 G |
86 | (defvar eww-current-title "" |
87 | "Title of current page.") | |
266c63b5 AK |
88 | (defvar eww-history nil) |
89 | ||
924d6997 G |
90 | (defvar eww-next-url nil) |
91 | (defvar eww-previous-url nil) | |
92 | (defvar eww-up-url nil) | |
970ad972 G |
93 | (defvar eww-home-url nil) |
94 | (defvar eww-start-url nil) | |
95 | (defvar eww-contents-url nil) | |
924d6997 | 96 | |
d583b36b | 97 | ;;;###autoload |
266c63b5 | 98 | (defun eww (url) |
a3ca09b9 IK |
99 | "Fetch URL and render the page. |
100 | If the input doesn't look like an URL or a domain name, the | |
101 | word(s) will be searched for via `eww-search-prefix'." | |
102 | (interactive "sEnter URL or keywords: ") | |
103 | (if (and (= (length (split-string url)) 1) | |
104 | (> (length (split-string url "\\.")) 1)) | |
71d4c19d IK |
105 | (progn |
106 | (unless (string-match-p "\\`[a-zA-Z][-a-zA-Z0-9+.]*://" url) | |
107 | (setq url (concat "http://" url))) | |
108 | ;; some site don't redirect final / | |
109 | (when (string= (url-filename (url-generic-parse-url url)) "") | |
110 | (setq url (concat url "/")))) | |
b89fc156 IK |
111 | (unless (string-match-p "^file:" url) |
112 | (setq url (concat eww-search-prefix | |
113 | (replace-regexp-in-string " " "+" url))))) | |
266c63b5 AK |
114 | (url-retrieve url 'eww-render (list url))) |
115 | ||
924d6997 G |
116 | ;;;###autoload |
117 | (defun eww-open-file (file) | |
118 | "Render a file using EWW." | |
119 | (interactive "fFile: ") | |
120 | (eww (concat "file://" (expand-file-name file)))) | |
121 | ||
266c63b5 | 122 | (defun eww-render (status url &optional point) |
c74cb344 G |
123 | (let ((redirect (plist-get status :redirect))) |
124 | (when redirect | |
125 | (setq url redirect))) | |
924d6997 G |
126 | (set (make-local-variable 'eww-next-url) nil) |
127 | (set (make-local-variable 'eww-previous-url) nil) | |
128 | (set (make-local-variable 'eww-up-url) nil) | |
970ad972 G |
129 | (set (make-local-variable 'eww-home-url) nil) |
130 | (set (make-local-variable 'eww-start-url) nil) | |
131 | (set (make-local-variable 'eww-contents-url) nil) | |
266c63b5 | 132 | (let* ((headers (eww-parse-headers)) |
c74cb344 G |
133 | (shr-target-id |
134 | (and (string-match "#\\(.*\\)" url) | |
135 | (match-string 1 url))) | |
266c63b5 AK |
136 | (content-type |
137 | (mail-header-parse-content-type | |
138 | (or (cdr (assoc "content-type" headers)) | |
139 | "text/plain"))) | |
140 | (charset (intern | |
141 | (downcase | |
142 | (or (cdr (assq 'charset (cdr content-type))) | |
d652f4d0 G |
143 | (eww-detect-charset (equal (car content-type) |
144 | "text/html")) | |
266c63b5 AK |
145 | "utf8")))) |
146 | (data-buffer (current-buffer))) | |
147 | (unwind-protect | |
148 | (progn | |
149 | (cond | |
150 | ((equal (car content-type) "text/html") | |
151 | (eww-display-html charset url)) | |
152 | ((string-match "^image/" (car content-type)) | |
153 | (eww-display-image)) | |
154 | (t | |
155 | (eww-display-raw charset))) | |
c74cb344 G |
156 | (cond |
157 | (point | |
158 | (goto-char point)) | |
159 | (shr-target-id | |
160 | (let ((point (next-single-property-change | |
161 | (point-min) 'shr-target-id))) | |
162 | (when point | |
163 | (goto-char (1+ point))))))) | |
266c63b5 AK |
164 | (kill-buffer data-buffer)))) |
165 | ||
166 | (defun eww-parse-headers () | |
167 | (let ((headers nil)) | |
d652f4d0 | 168 | (goto-char (point-min)) |
266c63b5 AK |
169 | (while (and (not (eobp)) |
170 | (not (eolp))) | |
171 | (when (looking-at "\\([^:]+\\): *\\(.*\\)") | |
172 | (push (cons (downcase (match-string 1)) | |
173 | (match-string 2)) | |
174 | headers)) | |
175 | (forward-line 1)) | |
176 | (unless (eobp) | |
177 | (forward-line 1)) | |
178 | headers)) | |
179 | ||
db5a34ca KY |
180 | (defun eww-detect-charset (html-p) |
181 | (let ((case-fold-search t) | |
182 | (pt (point))) | |
183 | (or (and html-p | |
184 | (re-search-forward | |
b89fc156 | 185 | "<meta[\t\n\r ]+[^>]*charset=\"?\\([^\t\n\r \"/>]+\\)[\\\"'.*]" nil t) |
db5a34ca KY |
186 | (goto-char pt) |
187 | (match-string 1)) | |
188 | (and (looking-at | |
189 | "[\t\n\r ]*<\\?xml[\t\n\r ]+[^>]*encoding=\"\\([^\"]+\\)") | |
190 | (match-string 1))))) | |
191 | ||
266c63b5 AK |
192 | (defun eww-display-html (charset url) |
193 | (unless (eq charset 'utf8) | |
194 | (decode-coding-region (point) (point-max) charset)) | |
195 | (let ((document | |
196 | (list | |
197 | 'base (list (cons 'href url)) | |
198 | (libxml-parse-html-region (point) (point-max))))) | |
199 | (eww-setup-buffer) | |
200 | (setq eww-current-url url) | |
c74cb344 | 201 | (eww-update-header-line-format) |
2644071e | 202 | (let ((inhibit-read-only t) |
970ad972 | 203 | (after-change-functions nil) |
c74cb344 | 204 | (shr-width nil) |
2644071e | 205 | (shr-external-rendering-functions |
c74cb344 G |
206 | '((title . eww-tag-title) |
207 | (form . eww-tag-form) | |
2644071e | 208 | (input . eww-tag-input) |
c74cb344 G |
209 | (textarea . eww-tag-textarea) |
210 | (body . eww-tag-body) | |
924d6997 G |
211 | (select . eww-tag-select) |
212 | (link . eww-tag-link) | |
213 | (a . eww-tag-a)))) | |
970ad972 | 214 | (shr-insert-document document)) |
266c63b5 AK |
215 | (goto-char (point-min)))) |
216 | ||
924d6997 G |
217 | (defun eww-handle-link (cont) |
218 | (let* ((rel (assq :rel cont)) | |
219 | (href (assq :href cont)) | |
970ad972 G |
220 | (where (assoc |
221 | ;; The text associated with :rel is case-insensitive. | |
222 | (if rel (downcase (cdr rel))) | |
924d6997 | 223 | '(("next" . eww-next-url) |
970ad972 G |
224 | ;; Texinfo uses "previous", but HTML specifies |
225 | ;; "prev", so recognize both. | |
924d6997 | 226 | ("previous" . eww-previous-url) |
970ad972 G |
227 | ("prev" . eww-previous-url) |
228 | ;; HTML specifies "start" but also "contents", | |
229 | ;; and Gtk seems to use "home". Recognize | |
230 | ;; them all; but store them in different | |
231 | ;; variables so that we can readily choose the | |
232 | ;; "best" one. | |
233 | ("start" . eww-start-url) | |
234 | ("home" . eww-home-url) | |
235 | ("contents" . eww-contents-url) | |
924d6997 G |
236 | ("up" . eww-up-url))))) |
237 | (and href | |
238 | where | |
239 | (set (cdr where) (cdr href))))) | |
240 | ||
241 | (defun eww-tag-link (cont) | |
242 | (eww-handle-link cont) | |
243 | (shr-generic cont)) | |
244 | ||
245 | (defun eww-tag-a (cont) | |
246 | (eww-handle-link cont) | |
247 | (shr-tag-a cont)) | |
248 | ||
c74cb344 G |
249 | (defun eww-update-header-line-format () |
250 | (if eww-header-line-format | |
d80a808f LMI |
251 | (setq header-line-format |
252 | (replace-regexp-in-string | |
253 | "%" "%%" | |
254 | (format-spec eww-header-line-format | |
255 | `((?u . ,eww-current-url) | |
256 | (?t . ,eww-current-title))))) | |
c74cb344 G |
257 | (setq header-line-format nil))) |
258 | ||
259 | (defun eww-tag-title (cont) | |
260 | (setq eww-current-title "") | |
261 | (dolist (sub cont) | |
262 | (when (eq (car sub) 'text) | |
263 | (setq eww-current-title (concat eww-current-title (cdr sub))))) | |
264 | (eww-update-header-line-format)) | |
265 | ||
266 | (defun eww-tag-body (cont) | |
267 | (let* ((start (point)) | |
268 | (fgcolor (cdr (or (assq :fgcolor cont) | |
269 | (assq :text cont)))) | |
270 | (bgcolor (cdr (assq :bgcolor cont))) | |
271 | (shr-stylesheet (list (cons 'color fgcolor) | |
272 | (cons 'background-color bgcolor)))) | |
273 | (shr-generic cont) | |
274 | (eww-colorize-region start (point) fgcolor bgcolor))) | |
275 | ||
276 | (defun eww-colorize-region (start end fg &optional bg) | |
277 | (when (or fg bg) | |
278 | (let ((new-colors (shr-color-check fg bg))) | |
279 | (when new-colors | |
280 | (when fg | |
544d4594 | 281 | (add-face-text-property start end |
970ad972 G |
282 | (list :foreground (cadr new-colors)) |
283 | t)) | |
c74cb344 | 284 | (when bg |
544d4594 | 285 | (add-face-text-property start end |
970ad972 G |
286 | (list :background (car new-colors)) |
287 | t)))))) | |
c74cb344 | 288 | |
266c63b5 AK |
289 | (defun eww-display-raw (charset) |
290 | (let ((data (buffer-substring (point) (point-max)))) | |
291 | (eww-setup-buffer) | |
292 | (let ((inhibit-read-only t)) | |
293 | (insert data)) | |
294 | (goto-char (point-min)))) | |
295 | ||
296 | (defun eww-display-image () | |
297 | (let ((data (buffer-substring (point) (point-max)))) | |
298 | (eww-setup-buffer) | |
299 | (let ((inhibit-read-only t)) | |
300 | (shr-put-image data nil)) | |
301 | (goto-char (point-min)))) | |
302 | ||
303 | (defun eww-setup-buffer () | |
304 | (pop-to-buffer (get-buffer-create "*eww*")) | |
2644071e | 305 | (remove-overlays) |
266c63b5 AK |
306 | (let ((inhibit-read-only t)) |
307 | (erase-buffer)) | |
308 | (eww-mode)) | |
309 | ||
310 | (defvar eww-mode-map | |
311 | (let ((map (make-sparse-keymap))) | |
312 | (suppress-keymap map) | |
313 | (define-key map "q" 'eww-quit) | |
f22255bd | 314 | (define-key map "g" 'eww-reload) |
7304e4dd LMI |
315 | (define-key map [tab] 'shr-next-link) |
316 | (define-key map [backtab] 'shr-previous-link) | |
266c63b5 AK |
317 | (define-key map [delete] 'scroll-down-command) |
318 | (define-key map "\177" 'scroll-down-command) | |
319 | (define-key map " " 'scroll-up-command) | |
924d6997 G |
320 | (define-key map "l" 'eww-back-url) |
321 | (define-key map "n" 'eww-next-url) | |
266c63b5 | 322 | (define-key map "p" 'eww-previous-url) |
924d6997 G |
323 | (define-key map "u" 'eww-up-url) |
324 | (define-key map "t" 'eww-top-url) | |
f865b474 | 325 | (define-key map "w" 'eww-browse-with-external-browser) |
b89fc156 | 326 | (define-key map "y" 'eww-yank-page-url) |
266c63b5 AK |
327 | map)) |
328 | ||
d652f4d0 | 329 | (define-derived-mode eww-mode nil "eww" |
266c63b5 AK |
330 | "Mode for browsing the web. |
331 | ||
332 | \\{eww-mode-map}" | |
266c63b5 | 333 | (set (make-local-variable 'eww-current-url) 'author) |
970ad972 G |
334 | (set (make-local-variable 'browse-url-browser-function) 'eww-browse-url) |
335 | (set (make-local-variable 'after-change-functions) 'eww-process-text-input) | |
336 | ;;(setq buffer-read-only t) | |
337 | ) | |
266c63b5 AK |
338 | |
339 | (defun eww-browse-url (url &optional new-window) | |
970ad972 G |
340 | (when (and (equal major-mode 'eww-mode) |
341 | eww-current-url) | |
342 | (push (list eww-current-url (point)) | |
343 | eww-history)) | |
5c3087e9 | 344 | (eww url)) |
266c63b5 AK |
345 | |
346 | (defun eww-quit () | |
347 | "Exit the Emacs Web Wowser." | |
348 | (interactive) | |
349 | (setq eww-history nil) | |
350 | (kill-buffer (current-buffer))) | |
351 | ||
924d6997 | 352 | (defun eww-back-url () |
266c63b5 AK |
353 | "Go to the previously displayed page." |
354 | (interactive) | |
355 | (when (zerop (length eww-history)) | |
356 | (error "No previous page")) | |
357 | (let ((prev (pop eww-history))) | |
358 | (url-retrieve (car prev) 'eww-render (list (car prev) (cadr prev))))) | |
359 | ||
924d6997 G |
360 | (defun eww-next-url () |
361 | "Go to the page marked `next'. | |
362 | A page is marked `next' if rel=\"next\" appears in a <link> | |
363 | or <a> tag." | |
364 | (interactive) | |
365 | (if eww-next-url | |
366 | (eww-browse-url (shr-expand-url eww-next-url eww-current-url)) | |
367 | (error "No `next' on this page"))) | |
368 | ||
369 | (defun eww-previous-url () | |
370 | "Go to the page marked `previous'. | |
371 | A page is marked `previous' if rel=\"previous\" appears in a <link> | |
372 | or <a> tag." | |
373 | (interactive) | |
374 | (if eww-previous-url | |
375 | (eww-browse-url (shr-expand-url eww-previous-url eww-current-url)) | |
376 | (error "No `previous' on this page"))) | |
377 | ||
378 | (defun eww-up-url () | |
379 | "Go to the page marked `up'. | |
380 | A page is marked `up' if rel=\"up\" appears in a <link> | |
381 | or <a> tag." | |
382 | (interactive) | |
383 | (if eww-up-url | |
384 | (eww-browse-url (shr-expand-url eww-up-url eww-current-url)) | |
385 | (error "No `up' on this page"))) | |
386 | ||
387 | (defun eww-top-url () | |
388 | "Go to the page marked `top'. | |
970ad972 G |
389 | A page is marked `top' if rel=\"start\", rel=\"home\", or rel=\"contents\" |
390 | appears in a <link> or <a> tag." | |
924d6997 | 391 | (interactive) |
970ad972 G |
392 | (let ((best-url (or eww-start-url |
393 | eww-contents-url | |
394 | eww-home-url))) | |
395 | (if best-url | |
396 | (eww-browse-url (shr-expand-url best-url eww-current-url)) | |
397 | (error "No `top' for this page")))) | |
924d6997 | 398 | |
f22255bd LMI |
399 | (defun eww-reload () |
400 | "Reload the current page." | |
401 | (interactive) | |
402 | (url-retrieve eww-current-url 'eww-render | |
403 | (list eww-current-url (point)))) | |
404 | ||
2644071e LMI |
405 | ;; Form support. |
406 | ||
407 | (defvar eww-form nil) | |
408 | ||
970ad972 G |
409 | (defvar eww-submit-map |
410 | (let ((map (make-sparse-keymap))) | |
411 | (define-key map "\r" 'eww-submit) | |
e854cfc7 | 412 | (define-key map [(control c) (control c)] 'eww-submit) |
970ad972 G |
413 | map)) |
414 | ||
415 | (defvar eww-checkbox-map | |
416 | (let ((map (make-sparse-keymap))) | |
417 | (define-key map [space] 'eww-toggle-checkbox) | |
418 | (define-key map "\r" 'eww-toggle-checkbox) | |
e854cfc7 | 419 | (define-key map [(control c) (control c)] 'eww-submit) |
970ad972 G |
420 | map)) |
421 | ||
422 | (defvar eww-text-map | |
423 | (let ((map (make-keymap))) | |
424 | (set-keymap-parent map text-mode-map) | |
425 | (define-key map "\r" 'eww-submit) | |
426 | (define-key map [(control a)] 'eww-beginning-of-text) | |
e854cfc7 | 427 | (define-key map [(control c) (control c)] 'eww-submit) |
970ad972 G |
428 | (define-key map [(control e)] 'eww-end-of-text) |
429 | (define-key map [tab] 'shr-next-link) | |
430 | (define-key map [backtab] 'shr-previous-link) | |
431 | map)) | |
432 | ||
433 | (defvar eww-textarea-map | |
434 | (let ((map (make-keymap))) | |
435 | (set-keymap-parent map text-mode-map) | |
436 | (define-key map "\r" 'forward-line) | |
e854cfc7 | 437 | (define-key map [(control c) (control c)] 'eww-submit) |
970ad972 G |
438 | (define-key map [tab] 'shr-next-link) |
439 | (define-key map [backtab] 'shr-previous-link) | |
440 | map)) | |
441 | ||
442 | (defvar eww-select-map | |
443 | (let ((map (make-sparse-keymap))) | |
444 | (define-key map "\r" 'eww-change-select) | |
e854cfc7 | 445 | (define-key map [(control c) (control c)] 'eww-submit) |
970ad972 G |
446 | map)) |
447 | ||
448 | (defun eww-beginning-of-text () | |
449 | "Move to the start of the input field." | |
450 | (interactive) | |
451 | (goto-char (eww-beginning-of-field))) | |
452 | ||
453 | (defun eww-end-of-text () | |
454 | "Move to the end of the text in the input field." | |
455 | (interactive) | |
456 | (goto-char (eww-end-of-field)) | |
457 | (let ((start (eww-beginning-of-field))) | |
458 | (while (and (equal (following-char) ? ) | |
459 | (> (point) start)) | |
460 | (forward-char -1)) | |
461 | (when (> (point) start) | |
462 | (forward-char 1)))) | |
463 | ||
464 | (defun eww-beginning-of-field () | |
465 | (cond | |
466 | ((bobp) | |
467 | (point)) | |
468 | ((not (eq (get-text-property (point) 'eww-form) | |
469 | (get-text-property (1- (point)) 'eww-form))) | |
470 | (point)) | |
471 | (t | |
472 | (previous-single-property-change | |
473 | (point) 'eww-form nil (point-min))))) | |
474 | ||
475 | (defun eww-end-of-field () | |
476 | (1- (next-single-property-change | |
477 | (point) 'eww-form nil (point-max)))) | |
478 | ||
2644071e LMI |
479 | (defun eww-tag-form (cont) |
480 | (let ((eww-form | |
481 | (list (assq :method cont) | |
482 | (assq :action cont))) | |
483 | (start (point))) | |
484 | (shr-ensure-paragraph) | |
485 | (shr-generic cont) | |
3d95242e LMI |
486 | (unless (bolp) |
487 | (insert "\n")) | |
488 | (insert "\n") | |
001b9fbe LMI |
489 | (when (> (point) start) |
490 | (put-text-property start (1+ start) | |
491 | 'eww-form eww-form)))) | |
2644071e | 492 | |
970ad972 G |
493 | (defun eww-form-submit (cont) |
494 | (let ((start (point)) | |
495 | (value (cdr (assq :value cont)))) | |
496 | (setq value | |
497 | (if (zerop (length value)) | |
498 | "Submit" | |
499 | value)) | |
500 | (insert value) | |
501 | (add-face-text-property start (point) 'eww-form-submit) | |
502 | (put-text-property start (point) 'eww-form | |
503 | (list :eww-form eww-form | |
504 | :value value | |
505 | :type "submit" | |
506 | :name (cdr (assq :name cont)))) | |
507 | (put-text-property start (point) 'keymap eww-submit-map) | |
508 | (insert " "))) | |
509 | ||
510 | (defun eww-form-checkbox (cont) | |
511 | (let ((start (point))) | |
512 | (if (cdr (assq :checked cont)) | |
513 | (insert "[X]") | |
514 | (insert "[ ]")) | |
515 | (add-face-text-property start (point) 'eww-form-checkbox) | |
516 | (put-text-property start (point) 'eww-form | |
517 | (list :eww-form eww-form | |
518 | :value (cdr (assq :value cont)) | |
519 | :type (downcase (cdr (assq :type cont))) | |
520 | :checked (cdr (assq :checked cont)) | |
521 | :name (cdr (assq :name cont)))) | |
522 | (put-text-property start (point) 'keymap eww-checkbox-map) | |
523 | (insert " "))) | |
524 | ||
525 | (defun eww-form-text (cont) | |
526 | (let ((start (point)) | |
527 | (type (downcase (or (cdr (assq :type cont)) | |
528 | "text"))) | |
529 | (value (or (cdr (assq :value cont)) "")) | |
530 | (width (string-to-number | |
531 | (or (cdr (assq :size cont)) | |
532 | "40")))) | |
533 | (insert value) | |
534 | (when (< (length value) width) | |
535 | (insert (make-string (- width (length value)) ? ))) | |
536 | (put-text-property start (point) 'face 'eww-form-text) | |
537 | (put-text-property start (point) 'local-map eww-text-map) | |
538 | (put-text-property start (point) 'inhibit-read-only t) | |
539 | (put-text-property start (point) 'eww-form | |
540 | (list :eww-form eww-form | |
541 | :value value | |
542 | :type type | |
543 | :name (cdr (assq :name cont)))) | |
544 | (insert " "))) | |
545 | ||
546 | (defun eww-process-text-input (beg end length) | |
547 | (let* ((form (get-text-property end 'eww-form)) | |
548 | (properties (text-properties-at end)) | |
549 | (type (plist-get form :type))) | |
550 | (when (and form | |
551 | (member type '("text" "password" "textarea"))) | |
552 | (cond | |
553 | ((zerop length) | |
554 | ;; Delete some space at the end. | |
555 | (save-excursion | |
556 | (goto-char | |
557 | (if (equal type "textarea") | |
558 | (1- (line-end-position)) | |
559 | (eww-end-of-field))) | |
560 | (let ((new (- end beg))) | |
561 | (while (and (> new 0) | |
562 | (eql (following-char) ? )) | |
563 | (delete-region (point) (1+ (point))) | |
564 | (setq new (1- new)))) | |
565 | (set-text-properties beg end properties))) | |
566 | ((> length 0) | |
567 | ;; Add padding. | |
568 | (save-excursion | |
569 | (goto-char | |
570 | (if (equal type "textarea") | |
571 | (1- (line-end-position)) | |
572 | (eww-end-of-field))) | |
573 | (let ((start (point))) | |
574 | (insert (make-string length ? )) | |
575 | (set-text-properties start (point) properties))))) | |
576 | (let ((value (buffer-substring-no-properties | |
577 | (eww-beginning-of-field) | |
578 | (eww-end-of-field)))) | |
579 | (when (string-match " +\\'" value) | |
580 | (setq value (substring value 0 (match-beginning 0)))) | |
581 | (plist-put form :value value) | |
582 | (when (equal type "password") | |
583 | ;; Display passwords as asterisks. | |
584 | (let ((start (eww-beginning-of-field))) | |
585 | (put-text-property start (+ start (length value)) | |
586 | 'display (make-string (length value) ?*)))))))) | |
9ddf23f0 | 587 | |
c74cb344 | 588 | (defun eww-tag-textarea (cont) |
970ad972 G |
589 | (let ((start (point)) |
590 | (value (or (cdr (assq :value cont)) "")) | |
591 | (lines (string-to-number | |
592 | (or (cdr (assq :rows cont)) | |
593 | "10"))) | |
594 | (width (string-to-number | |
595 | (or (cdr (assq :cols cont)) | |
596 | "10"))) | |
597 | end) | |
598 | (shr-ensure-newline) | |
599 | (insert value) | |
600 | (shr-ensure-newline) | |
601 | (when (< (count-lines start (point)) lines) | |
602 | (dotimes (i (- lines (count-lines start (point)))) | |
603 | (insert "\n"))) | |
604 | (setq end (point-marker)) | |
605 | (goto-char start) | |
606 | (while (< (point) end) | |
607 | (end-of-line) | |
608 | (let ((pad (- width (- (point) (line-beginning-position))))) | |
609 | (when (> pad 0) | |
610 | (insert (make-string pad ? )))) | |
611 | (add-face-text-property (line-beginning-position) | |
612 | (point) 'eww-form-text) | |
613 | (put-text-property (line-beginning-position) (point) | |
614 | 'local-map eww-textarea-map) | |
615 | (forward-line 1)) | |
616 | (put-text-property start (point) 'eww-form | |
617 | (list :eww-form eww-form | |
618 | :value value | |
619 | :type "textarea" | |
620 | :name (cdr (assq :name cont)))))) | |
621 | ||
622 | (defun eww-tag-input (cont) | |
623 | (let ((type (downcase (or (cdr (assq :type cont)) | |
624 | "text"))) | |
625 | (start (point))) | |
626 | (cond | |
627 | ((or (equal type "checkbox") | |
628 | (equal type "radio")) | |
629 | (eww-form-checkbox cont)) | |
630 | ((equal type "submit") | |
631 | (eww-form-submit cont)) | |
632 | ((equal type "hidden") | |
633 | (let ((form eww-form) | |
634 | (name (cdr (assq :name cont)))) | |
635 | ;; Don't add <input type=hidden> elements repeatedly. | |
636 | (while (and form | |
637 | (or (not (consp (car form))) | |
638 | (not (eq (caar form) 'hidden)) | |
639 | (not (equal (plist-get (cdr (car form)) :name) | |
640 | name)))) | |
641 | (setq form (cdr form))) | |
642 | (unless form | |
643 | (nconc eww-form (list | |
644 | (list 'hidden | |
645 | :name name | |
646 | :value (cdr (assq :value cont)))))))) | |
647 | (t | |
648 | (eww-form-text cont))) | |
649 | (unless (= start (point)) | |
650 | (put-text-property start (1+ start) 'help-echo "Input field")))) | |
c74cb344 | 651 | |
9ddf23f0 LMI |
652 | (defun eww-tag-select (cont) |
653 | (shr-ensure-paragraph) | |
970ad972 | 654 | (let ((menu (list :name (cdr (assq :name cont)) |
9ddf23f0 LMI |
655 | :eww-form eww-form)) |
656 | (options nil) | |
970ad972 G |
657 | (start (point)) |
658 | (max 0)) | |
9ddf23f0 LMI |
659 | (dolist (elem cont) |
660 | (when (eq (car elem) 'option) | |
661 | (when (cdr (assq :selected (cdr elem))) | |
662 | (nconc menu (list :value | |
663 | (cdr (assq :value (cdr elem)))))) | |
970ad972 G |
664 | (let ((display (or (cdr (assq 'text (cdr elem))) ""))) |
665 | (setq max (max max (length display))) | |
666 | (push (list 'item | |
667 | :value (cdr (assq :value (cdr elem))) | |
668 | :display display) | |
669 | options)))) | |
be2aa135 | 670 | (when options |
970ad972 | 671 | (setq options (nreverse options)) |
be2aa135 | 672 | ;; If we have no selected values, default to the first value. |
970ad972 | 673 | (unless (plist-get menu :value) |
be2aa135 LMI |
674 | (nconc menu (list :value (nth 2 (car options))))) |
675 | (nconc menu options) | |
970ad972 G |
676 | (let ((selected (eww-select-display menu))) |
677 | (insert selected | |
678 | (make-string (- max (length selected)) ? ))) | |
679 | (put-text-property start (point) 'eww-form menu) | |
680 | (add-face-text-property start (point) 'eww-form-select) | |
681 | (put-text-property start (point) 'keymap eww-select-map) | |
be2aa135 | 682 | (shr-ensure-paragraph)))) |
2644071e | 683 | |
970ad972 G |
684 | (defun eww-select-display (select) |
685 | (let ((value (plist-get select :value)) | |
686 | display) | |
687 | (dolist (elem select) | |
688 | (when (and (consp elem) | |
689 | (eq (car elem) 'item) | |
690 | (equal value (plist-get (cdr elem) :value))) | |
691 | (setq display (plist-get (cdr elem) :display)))) | |
692 | display)) | |
693 | ||
694 | (defun eww-change-select () | |
695 | "Change the value of the select drop-down menu under point." | |
696 | (interactive) | |
697 | (let* ((input (get-text-property (point) 'eww-form)) | |
698 | (properties (text-properties-at (point))) | |
699 | (completion-ignore-case t) | |
700 | (options | |
701 | (delq nil | |
702 | (mapcar (lambda (elem) | |
703 | (and (consp elem) | |
704 | (eq (car elem) 'item) | |
705 | (cons (plist-get (cdr elem) :display) | |
706 | (plist-get (cdr elem) :value)))) | |
707 | input))) | |
708 | (display | |
709 | (completing-read "Change value: " options nil 'require-match)) | |
710 | (inhibit-read-only t)) | |
711 | (plist-put input :value (cdr (assoc-string display options t))) | |
712 | (goto-char | |
713 | (eww-update-field display)))) | |
714 | ||
715 | (defun eww-update-field (string) | |
716 | (let ((properties (text-properties-at (point))) | |
717 | (start (eww-beginning-of-field)) | |
718 | (end (1+ (eww-end-of-field)))) | |
719 | (delete-region start end) | |
720 | (insert string | |
721 | (make-string (- (- end start) (length string)) ? )) | |
722 | (set-text-properties start end properties) | |
723 | start)) | |
724 | ||
725 | (defun eww-toggle-checkbox () | |
726 | "Toggle the value of the checkbox under point." | |
727 | (interactive) | |
728 | (let* ((input (get-text-property (point) 'eww-form)) | |
729 | (type (plist-get input :type))) | |
730 | (if (equal type "checkbox") | |
731 | (goto-char | |
732 | (1+ | |
733 | (if (plist-get input :checked) | |
734 | (progn | |
735 | (plist-put input :checked nil) | |
736 | (eww-update-field "[ ]")) | |
737 | (plist-put input :checked t) | |
738 | (eww-update-field "[X]")))) | |
739 | ;; Radio button. Switch all other buttons off. | |
740 | (let ((name (plist-get input :name))) | |
741 | (save-excursion | |
742 | (dolist (elem (eww-inputs (plist-get input :eww-form))) | |
743 | (when (equal (plist-get (cdr elem) :name) name) | |
744 | (goto-char (car elem)) | |
745 | (if (not (eq (cdr elem) input)) | |
746 | (progn | |
747 | (plist-put input :checked nil) | |
748 | (eww-update-field "[ ]")) | |
749 | (plist-put input :checked t) | |
750 | (eww-update-field "[X]"))))) | |
751 | (forward-char 1))))) | |
752 | ||
753 | (defun eww-inputs (form) | |
754 | (let ((start (point-min)) | |
755 | (inputs nil)) | |
756 | (while (and start | |
757 | (< start (point-max))) | |
758 | (when (or (get-text-property start 'eww-form) | |
759 | (setq start (next-single-property-change start 'eww-form))) | |
760 | (when (eq (plist-get (get-text-property start 'eww-form) :eww-form) | |
761 | form) | |
762 | (push (cons start (get-text-property start 'eww-form)) | |
763 | inputs)) | |
764 | (setq start (next-single-property-change start 'eww-form)))) | |
765 | (nreverse inputs))) | |
766 | ||
767 | (defun eww-input-value (input) | |
768 | (let ((type (plist-get input :type)) | |
769 | (value (plist-get input :value))) | |
770 | (cond | |
771 | ((equal type "textarea") | |
772 | (with-temp-buffer | |
773 | (insert value) | |
774 | (goto-char (point-min)) | |
775 | (while (re-search-forward "^ +\n\\| +$" nil t) | |
776 | (replace-match "" t t)) | |
777 | (buffer-string))) | |
778 | (t | |
779 | (if (string-match " +\\'" value) | |
780 | (substring value 0 (match-beginning 0)) | |
781 | value))))) | |
782 | ||
783 | (defun eww-submit () | |
784 | "Submit the current form." | |
785 | (interactive) | |
786 | (let* ((this-input (get-text-property (point) 'eww-form)) | |
787 | (form (plist-get this-input :eww-form)) | |
788 | values next-submit) | |
789 | (dolist (elem (sort (eww-inputs form) | |
790 | (lambda (o1 o2) | |
791 | (< (car o1) (car o2))))) | |
792 | (let* ((input (cdr elem)) | |
793 | (input-start (car elem)) | |
794 | (name (plist-get input :name))) | |
795 | (when name | |
796 | (cond | |
797 | ((member (plist-get input :type) '("checkbox" "radio")) | |
798 | (when (plist-get input :checked) | |
799 | (push (cons name (plist-get input :value)) | |
800 | values))) | |
801 | ((equal (plist-get input :type) "submit") | |
802 | ;; We want the values from buttons if we hit a button if | |
803 | ;; we hit enter on it, or if it's the first button after | |
804 | ;; the field we did hit return on. | |
805 | (when (or (eq input this-input) | |
806 | (and (not (eq input this-input)) | |
807 | (null next-submit) | |
808 | (> input-start (point)))) | |
809 | (setq next-submit t) | |
810 | (push (cons name (plist-get input :value)) | |
811 | values))) | |
812 | (t | |
813 | (push (cons name (eww-input-value input)) | |
814 | values)))))) | |
f22255bd LMI |
815 | (dolist (elem form) |
816 | (when (and (consp elem) | |
817 | (eq (car elem) 'hidden)) | |
818 | (push (cons (plist-get (cdr elem) :name) | |
819 | (plist-get (cdr elem) :value)) | |
820 | values))) | |
c74cb344 G |
821 | (if (and (stringp (cdr (assq :method form))) |
822 | (equal (downcase (cdr (assq :method form))) "post")) | |
823 | (let ((url-request-method "POST") | |
824 | (url-request-extra-headers | |
825 | '(("Content-Type" . "application/x-www-form-urlencoded"))) | |
826 | (url-request-data (mm-url-encode-www-form-urlencoded values))) | |
827 | (eww-browse-url (shr-expand-url (cdr (assq :action form)) | |
828 | eww-current-url))) | |
829 | (eww-browse-url | |
830 | (concat | |
831 | (if (cdr (assq :action form)) | |
832 | (shr-expand-url (cdr (assq :action form)) | |
833 | eww-current-url) | |
834 | eww-current-url) | |
835 | "?" | |
836 | (mm-url-encode-www-form-urlencoded values)))))) | |
2644071e | 837 | |
f865b474 IK |
838 | (defun eww-browse-with-external-browser () |
839 | "Browse the current URL with an external browser. | |
0ebd92a3 | 840 | The browser to used is specified by the `shr-external-browser' variable." |
f865b474 | 841 | (interactive) |
0ebd92a3 | 842 | (funcall shr-external-browser eww-current-url)) |
f865b474 | 843 | |
b89fc156 IK |
844 | (defun eww-yank-page-url () |
845 | (interactive) | |
846 | (message eww-current-url) | |
847 | (kill-new eww-current-url)) | |
266c63b5 AK |
848 | (provide 'eww) |
849 | ||
850 | ;;; eww.el ends here |