1 /* modest-tny-msg-view.c */
3 /* insert (c)/licensing information) */
5 #include "modest-tny-msg-view.h"
6 #include "modest-tny-stream-gtkhtml.h"
7 #include "modest-tny-msg-actions.h"
9 #include <tny-text-buffer-stream.h>
13 #include <glib/gi18n.h>
14 #include <gtkhtml/gtkhtml.h>
15 #include <gtkhtml/gtkhtml-stream.h>
17 /* 'private'/'protected' functions */
18 static void modest_tny_msg_view_class_init (ModestTnyMsgViewClass *klass);
19 static void modest_tny_msg_view_init (ModestTnyMsgView *obj);
20 static void modest_tny_msg_view_finalize (GObject *obj);
23 static GSList* get_url_matches (GString *txt);
24 static gboolean fill_gtkhtml_with_txt (ModestTnyMsgView *self, GtkHTML* gtkhtml, const gchar* txt, TnyMsgIface *msg);
26 static gboolean on_link_clicked (GtkWidget *widget, const gchar *uri,
27 ModestTnyMsgView *msg_view);
28 static gboolean on_url_requested (GtkWidget *widget, const gchar *uri,
29 GtkHTMLStream *stream,
30 ModestTnyMsgView *msg_view);
34 * we need these regexps to find URLs in plain text e-mails
36 typedef struct _UrlMatchPattern UrlMatchPattern;
37 struct _UrlMatchPattern {
43 #define MAIL_VIEWER_URL_MATCH_PATTERNS {\
44 { "(file|http|ftp|https)://[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]+[-A-Za-z0-9_$%&=?/~#]",\
46 { "www\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
48 { "ftp\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
50 { "(voipto|callto|chatto|jabberto|xmpp):[-_a-z@0-9.\\+]+", \
52 { "mailto:[-_a-z0-9.\\+]+@[-_a-z0-9.]+", \
54 { "[-_a-z0-9.\\+]+@[-_a-z0-9.]+",\
66 typedef struct _ModestTnyMsgViewPrivate ModestTnyMsgViewPrivate;
67 struct _ModestTnyMsgViewPrivate {
70 gboolean show_attachments;
72 #define MODEST_TNY_MSG_VIEW_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE((o), \
73 MODEST_TYPE_TNY_MSG_VIEW, \
74 ModestTnyMsgViewPrivate))
76 static GtkContainerClass *parent_class = NULL;
78 /* uncomment the following if you have defined any signals */
79 /* static guint signals[LAST_SIGNAL] = {0}; */
82 modest_tny_msg_view_get_type (void)
84 static GType my_type = 0;
86 static const GTypeInfo my_info = {
87 sizeof(ModestTnyMsgViewClass),
89 NULL, /* base finalize */
90 (GClassInitFunc) modest_tny_msg_view_class_init,
91 NULL, /* class finalize */
92 NULL, /* class data */
93 sizeof(ModestTnyMsgView),
95 (GInstanceInitFunc) modest_tny_msg_view_init,
97 my_type = g_type_register_static (GTK_TYPE_SCROLLED_WINDOW,
105 modest_tny_msg_view_class_init (ModestTnyMsgViewClass *klass)
107 GObjectClass *gobject_class;
108 gobject_class = (GObjectClass*) klass;
110 parent_class = g_type_class_peek_parent (klass);
111 gobject_class->finalize = modest_tny_msg_view_finalize;
113 g_type_class_add_private (gobject_class, sizeof(ModestTnyMsgViewPrivate));
117 modest_tny_msg_view_init (ModestTnyMsgView *obj)
119 ModestTnyMsgViewPrivate *priv;
121 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(obj);
125 priv->gtkhtml = gtk_html_new();
127 /* TODO: -> conf-mgr */
128 priv->show_attachments = FALSE;
130 gtk_html_set_editable (GTK_HTML(priv->gtkhtml), FALSE);
131 gtk_html_allow_selection (GTK_HTML(priv->gtkhtml), TRUE);
132 gtk_html_set_caret_mode (GTK_HTML(priv->gtkhtml), FALSE);
133 gtk_html_set_blocking (GTK_HTML(priv->gtkhtml), FALSE);
134 gtk_html_set_images_blocking (GTK_HTML(priv->gtkhtml), FALSE);
136 g_signal_connect (G_OBJECT(priv->gtkhtml), "link_clicked",
137 G_CALLBACK(on_link_clicked), obj);
139 g_signal_connect (G_OBJECT(priv->gtkhtml), "url_requested",
140 G_CALLBACK(on_url_requested), obj);
145 modest_tny_msg_view_finalize (GObject *obj)
151 modest_tny_msg_view_new (TnyMsgIface *msg)
154 ModestTnyMsgView* self;
155 ModestTnyMsgViewPrivate *priv;
157 obj = G_OBJECT(g_object_new(MODEST_TYPE_TNY_MSG_VIEW, NULL));
158 self = MODEST_TNY_MSG_VIEW(obj);
159 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (self);
161 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(self),
162 GTK_POLICY_AUTOMATIC,
163 GTK_POLICY_AUTOMATIC);
166 gtk_container_add (GTK_CONTAINER(obj), priv->gtkhtml);
169 modest_tny_msg_view_set_message (self, msg);
171 return GTK_WIDGET(self);
177 on_link_clicked (GtkWidget *widget, const gchar *uri,
178 ModestTnyMsgView *msg_view)
180 ModestTnyMsgViewPrivate *priv;
183 if (g_str_has_prefix(uri, "attachment:")) {
184 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(msg_view);
185 priv->show_attachments = !priv->show_attachments;
186 modest_tny_msg_view_set_message(msg_view, priv->msg);
189 g_message ("link clicked: %s", uri); /* FIXME */
196 static TnyMsgMimePartIface *
197 find_cid_image (TnyMsgIface *msg, const gchar *cid)
199 TnyMsgMimePartIface *part = NULL;
202 g_return_val_if_fail (msg, NULL);
203 g_return_val_if_fail (cid, NULL);
205 parts = (GList*) tny_msg_iface_get_parts (msg);
206 while (parts && !part) {
207 const gchar *part_cid;
208 part = TNY_MSG_MIME_PART_IFACE(parts->data);
209 part_cid = tny_msg_mime_part_iface_get_content_id (part);
210 printf("CMP:%s:%s\n", cid, part_cid);
211 if (part_cid && strcmp (cid, part_cid) == 0)
212 return part; /* we found it! */
221 static TnyMsgMimePartIface *
222 find_attachment_by_filename (TnyMsgIface *msg, const gchar *fn)
224 TnyMsgMimePartIface *part = NULL;
227 g_return_val_if_fail (msg, NULL);
228 g_return_val_if_fail (fn, NULL);
230 parts = (GList*) tny_msg_iface_get_parts (msg);
231 while (parts && !part) {
232 const gchar *part_fn;
233 part = TNY_MSG_MIME_PART_IFACE(parts->data);
234 part_fn = tny_msg_mime_part_iface_get_filename (part);
235 if (part_fn && strcmp (fn, part_fn) == 0)
236 return part; /* we found it! */
246 on_url_requested (GtkWidget *widget, const gchar *uri,
247 GtkHTMLStream *stream,
248 ModestTnyMsgView *msg_view)
251 ModestTnyMsgViewPrivate *priv;
252 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (msg_view);
254 g_message ("url requested: %s", uri);
256 if (g_str_has_prefix (uri, "cid:")) {
257 /* +4 ==> skip "cid:" */
259 TnyMsgMimePartIface *part = find_cid_image (priv->msg, uri + 4);
261 g_message ("%s not found", uri + 4);
262 gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
264 TnyStreamIface *tny_stream =
265 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new(stream));
266 tny_msg_mime_part_iface_decode_to_stream (part,tny_stream);
267 gtk_html_stream_close (stream, GTK_HTML_STREAM_OK);
269 } else if (g_str_has_prefix (uri, "Attachment:")) {
270 /* +11 ==> skip... */
272 TnyMsgMimePartIface *part = find_attachment_by_filename (priv->msg, uri + 11);
274 g_message ("%s not found", uri + 11);
275 gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
277 TnyStreamIface *tny_stream =
278 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new(stream));
279 tny_msg_mime_part_iface_decode_to_stream (part,tny_stream);
280 gtk_html_stream_close (stream, GTK_HTML_STREAM_OK);
297 attachments_as_html(ModestTnyMsgView *self, TnyMsgIface *msg)
299 ModestTnyMsgViewPrivate *priv;
300 gboolean attachments_found = FALSE;
302 const GList *attachment_list, *attachment;
303 const gchar *content_type, *filename;
308 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (self);
310 /* CLEANUP: starting a new HTML may be unsupported */
311 appendix = g_string_new("<HTML><BODY>\n<hr><h5>Attachments:</h5>\n");
313 attachment_list = tny_msg_iface_get_parts(msg);
314 attachment = attachment_list;
317 content_type = tny_msg_mime_part_iface_get_content_type(
318 TNY_MSG_MIME_PART_IFACE(attachment->data));
319 g_return_val_if_fail(content_type, NULL);
320 if ( tny_msg_mime_part_iface_content_type_is(
321 TNY_MSG_MIME_PART_IFACE(attachment->data),
323 || tny_msg_mime_part_iface_content_type_is(
324 TNY_MSG_MIME_PART_IFACE(attachment->data),
326 filename = tny_msg_mime_part_iface_get_filename(
327 TNY_MSG_MIME_PART_IFACE(attachment->data));
329 filename = "[unknown]";
331 attachments_found = TRUE;
332 if (priv->show_attachments) {
333 g_string_append_printf(appendix, "<IMG src=\"Attachment:%s\">\n<BR><A href=\"attachment:%s\">%s</A>\n", filename, filename, filename);
335 g_string_append_printf(appendix, "<A href=\"attachment:%s\">%s</A>: %s<BR>\n", filename, filename, content_type);
338 attachment = attachment->next;
340 g_string_append(appendix, "</BODY></HTML>");
341 if (!attachments_found)
342 g_string_assign(appendix, "");
343 return g_string_free(appendix, FALSE);
347 hyperlinkify_plain_text (GString *txt)
350 GSList *match_list = get_url_matches (txt);
352 /* we will work backwards, so the offsets stay valid */
353 for (cursor = match_list; cursor; cursor = cursor->next) {
355 url_match_t *match = (url_match_t*) cursor->data;
356 gchar *url = g_strndup (txt->str + match->offset, match->len);
357 gchar *repl = NULL; /* replacement */
359 /* the prefix is NULL: use the one that is already there */
360 repl = g_strdup_printf ("<a href=\"%s%s\">%s</a>",
361 match->prefix ? match->prefix : "", url, url);
363 /* replace the old thing with our hyperlink
364 * replacement thing */
365 g_string_erase (txt, match->offset, match->len);
366 g_string_insert (txt, match->offset, repl);
371 g_free (cursor->data);
374 g_slist_free (match_list);
380 convert_to_html (const gchar *data)
383 gboolean first_space = TRUE;
391 html = g_string_sized_new (len + 100); /* just a guess... */
393 g_string_append_printf (html,
396 "<meta http-equiv=\"content-type\""
397 " content=\"text/html; charset=utf8\">"
401 /* replace with special html chars where needed*/
402 for (i = 0; i != len; ++i) {
406 case 0: break; /* ignore embedded \0s */
407 case '<' : g_string_append (html, "<"); break;
408 case '>' : g_string_append (html, ">"); break;
409 case '&' : g_string_append (html, """); break;
410 case '\n': g_string_append (html, "<br>\n"); break;
413 g_string_append (html, first_space ? " " : " ");
415 } else if (kar == '\t')
416 g_string_append (html, " ");
420 /* optimization trick: accumulate 'normal' chars, then copy */
422 kar = data [++charnum + i];
424 } while ((i + charnum < len) &&
425 (kar > '>' || (kar != '<' && kar != '>'
426 && kar != '&' && kar != ' '
427 && kar != '\n' && kar != '\t')));
428 g_string_append_len (html, &data[i], charnum);
434 g_string_append (html, "</tt></body></html>");
435 hyperlinkify_plain_text (html);
437 return g_string_free (html, FALSE);
444 cmp_offsets_reverse (const url_match_t *match1, const url_match_t *match2)
446 return match2->offset - match1->offset;
452 * check if the match is inside an existing match... */
454 chk_partial_match (const url_match_t *match, int* offset)
456 if (*offset >= match->offset && *offset < match->offset + match->len)
461 get_url_matches (GString *txt)
464 int rv, i, offset = 0;
465 GSList *match_list = NULL;
467 static UrlMatchPattern patterns[] = MAIL_VIEWER_URL_MATCH_PATTERNS;
468 const size_t pattern_num = sizeof(patterns)/sizeof(UrlMatchPattern);
470 /* initalize the regexps */
471 for (i = 0; i != pattern_num; ++i) {
472 patterns[i].preg = g_new0 (regex_t,1);
473 g_assert(regcomp (patterns[i].preg, patterns[i].regex,
474 REG_ICASE|REG_EXTENDED|REG_NEWLINE) == 0);
476 /* find all the matches */
477 for (i = 0; i != pattern_num; ++i) {
481 if ((rv = regexec (patterns[i].preg, txt->str + offset, 1, &rm, 0)) != 0) {
482 g_assert (rv == REG_NOMATCH); /* this should not happen */
483 break; /* try next regexp */
488 /* FIXME: optimize this */
489 /* to avoid partial matches on something that was already found... */
490 /* check_partial_match will put -1 in the data ptr if that is the case */
491 test_offset = offset + rm.rm_so;
492 g_slist_foreach (match_list, (GFunc)chk_partial_match, &test_offset);
494 /* make a list of our matches (<offset, len, prefix> tupels)*/
495 if (test_offset != -1) {
496 url_match_t *match = g_new (url_match_t,1);
497 match->offset = offset + rm.rm_so;
498 match->len = rm.rm_eo - rm.rm_so;
499 match->prefix = patterns[i].prefix;
500 match_list = g_slist_prepend (match_list, match);
506 for (i = 0; i != pattern_num; ++i) {
507 regfree (patterns[i].preg);
508 g_free (patterns[i].preg);
509 } /* don't free patterns itself -- it's static */
511 /* now sort the list, so the matches are in reverse order of occurence.
512 * that way, we can do the replacements starting from the end, so we don't need
513 * to recalculate the offsets
515 match_list = g_slist_sort (match_list,
516 (GCompareFunc)cmp_offsets_reverse);
521 fill_gtkhtml_with_txt (ModestTnyMsgView *self, GtkHTML* gtkhtml, const gchar* txt, TnyMsgIface *msg)
524 gchar *html_attachments;
526 g_return_val_if_fail (gtkhtml, FALSE);
527 g_return_val_if_fail (txt, FALSE);
529 html = g_string_new(convert_to_html (txt));
530 html_attachments = attachments_as_html(self, msg);
531 g_string_append(html, html_attachments);
533 gtk_html_load_from_string (gtkhtml, html->str, html->len);
534 g_string_free (html, TRUE);
535 g_free(html_attachments);
543 set_html_message (ModestTnyMsgView *self, TnyMsgMimePartIface *tny_body, TnyMsgIface *msg)
545 gchar *html_attachments;
546 TnyStreamIface *gtkhtml_stream;
547 ModestTnyMsgViewPrivate *priv;
549 g_return_val_if_fail (self, FALSE);
550 g_return_val_if_fail (tny_body, FALSE);
552 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
555 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new
556 (gtk_html_begin(GTK_HTML(priv->gtkhtml))));
558 tny_stream_iface_reset (gtkhtml_stream);
559 tny_msg_mime_part_iface_decode_to_stream (tny_body, gtkhtml_stream);
560 html_attachments = attachments_as_html(self, msg);
562 gtkhtml_write(gtkhtml_stream, html_attachments, strlen(html_attachments));
563 tny_stream_iface_reset (gtkhtml_stream);
565 g_object_unref (G_OBJECT(gtkhtml_stream));
566 g_free (html_attachments);
572 /* this is a hack --> we use the tny_text_buffer_stream to
573 * get the message text, then write to gtkhtml 'by hand' */
575 set_text_message (ModestTnyMsgView *self, TnyMsgMimePartIface *tny_body, TnyMsgIface *msg)
578 GtkTextIter begin, end;
579 TnyStreamIface* txt_stream;
581 ModestTnyMsgViewPrivate *priv;
583 g_return_val_if_fail (self, FALSE);
584 g_return_val_if_fail (tny_body, FALSE);
586 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
588 buf = gtk_text_buffer_new (NULL);
589 txt_stream = TNY_STREAM_IFACE(tny_text_buffer_stream_new (buf));
591 tny_stream_iface_reset (txt_stream);
592 tny_msg_mime_part_iface_decode_to_stream (tny_body, txt_stream);
593 tny_stream_iface_reset (txt_stream);
595 gtk_text_buffer_get_bounds (buf, &begin, &end);
596 txt = gtk_text_buffer_get_text (buf, &begin, &end, FALSE);
598 fill_gtkhtml_with_txt (self, GTK_HTML(priv->gtkhtml), txt, msg);
600 g_object_unref (G_OBJECT(txt_stream));
601 g_object_unref (G_OBJECT(buf));
608 modest_tny_msg_view_get_selected_text (ModestTnyMsgView *self)
610 ModestTnyMsgViewPrivate *priv;
616 g_return_val_if_fail (self, NULL);
617 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
618 html = priv->gtkhtml;
620 /* I'm sure there is a better way to check for selected text */
621 sel = gtk_html_get_selection_html(GTK_HTML(html), &len);
627 clip = gtk_widget_get_clipboard(html, GDK_SELECTION_PRIMARY);
628 return gtk_clipboard_wait_for_text(clip);
632 modest_tny_msg_view_set_message (ModestTnyMsgView *self, TnyMsgIface *msg)
634 TnyMsgMimePartIface *body;
635 ModestTnyMsgViewPrivate *priv;
637 g_return_if_fail (self);
639 priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
643 fill_gtkhtml_with_txt (self, GTK_HTML(priv->gtkhtml), "", msg);
648 body = modest_tny_msg_actions_find_body_part (msg, "text/html");
650 set_html_message (self, body, msg);
654 body = modest_tny_msg_actions_find_body_part (msg, "text/plain");
656 set_text_message (self, body, msg);
661 fill_gtkhtml_with_txt (self, GTK_HTML(priv->gtkhtml),
662 _("Unsupported message type"), msg);