git.maemo.org Git - modest/blob - src/modest-tny-msg-view.c

   1 /* modest-tny-msg-view.c */
   2
   3 /* insert (c)/licensing information) */
   4
   5 #include "modest-tny-msg-view.h"
   6 #include "modest-tny-stream-gtkhtml.h"
   7 #include "modest-tny-msg-actions.h"
   8
   9 #include <tny-text-buffer-stream.h>
  10 #include <string.h>
  11 #include <regex.h>
  12 #include <ctype.h>
  13 #include <glib/gi18n.h>
  14 #include <gtkhtml/gtkhtml.h>
  15 #include <gtkhtml/gtkhtml-stream.h>
  16
  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);
  21
  22
  23 static GSList*  get_url_matches (GString *txt);
  24 static gboolean fill_gtkhtml_with_txt (ModestTnyMsgView *self, GtkHTML* gtkhtml, const gchar* txt, TnyMsgIface *msg);
  25
  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);
  31 static gchar *construct_virtual_filename(const gchar *filename, const gint position, const gchar *id, const gboolean active);
  32 static gchar *construct_virtual_filename_from_mime_part(TnyMsgMimePartIface *msg, const gint position);
  33
  34 #define ATTACHMENT_ID_INLINE "attachment-inline"
  35 #define ATTACHMENT_ID_LINK "attachment-link"
  36
  37 gint virtual_filename_get_pos(const gchar *filename);
  38 /*
  39  * we need these regexps to find URLs in plain text e-mails
  40  */
  41 typedef struct _UrlMatchPattern UrlMatchPattern;
  42 struct _UrlMatchPattern {
  43         gchar   *regex;
  44         regex_t *preg;
  45         gchar   *prefix;
  46
  47 };
  48 #define MAIL_VIEWER_URL_MATCH_PATTERNS  {\
  49         { "(file|http|ftp|https)://[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]+[-A-Za-z0-9_$%&=?/~#]",\
  50           NULL, NULL },\
  51         { "www\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
  52           NULL, "http://" },\
  53         { "ftp\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
  54           NULL, "ftp://" },\
  55         { "(voipto|callto|chatto|jabberto|xmpp):[-_a-z@0-9.\\+]+", \
  56            NULL, NULL},                                             \
  57         { "mailto:[-_a-z0-9.\\+]+@[-_a-z0-9.]+",                    \
  58           NULL, NULL},\
  59         { "[-_a-z0-9.\\+]+@[-_a-z0-9.]+",\
  60           NULL, "mailto:"}\
  61         }
  62
  63
  64 /* list my signals */
  65 enum {
  66         /* MY_SIGNAL_1, */
  67         /* MY_SIGNAL_2, */
  68         LAST_SIGNAL
  69 };
  70
  71 typedef struct _ModestTnyMsgViewPrivate ModestTnyMsgViewPrivate;
  72 struct _ModestTnyMsgViewPrivate {
  73         GtkWidget *gtkhtml;
  74         TnyMsgIface *msg;
  75         ModestConf *conf;
  76 };
  77 #define MODEST_TNY_MSG_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  78                                                  MODEST_TYPE_TNY_MSG_VIEW, \
  79                                                  ModestTnyMsgViewPrivate))
  80 /* globals */
  81 static GtkContainerClass *parent_class = NULL;
  82
  83 /* uncomment the following if you have defined any signals */
  84 /* static guint signals[LAST_SIGNAL] = {0}; */
  85
  86 GType
  87 modest_tny_msg_view_get_type (void)
  88 {
  89         static GType my_type = 0;
  90         if (!my_type) {
  91                 static const GTypeInfo my_info = {
  92                         sizeof(ModestTnyMsgViewClass),
  93                         NULL,           /* base init */
  94                         NULL,           /* base finalize */
  95                         (GClassInitFunc) modest_tny_msg_view_class_init,
  96                         NULL,           /* class finalize */
  97                         NULL,           /* class data */
  98                         sizeof(ModestTnyMsgView),
  99                         1,              /* n_preallocs */
 100                         (GInstanceInitFunc) modest_tny_msg_view_init,
 101                 };
 102                 my_type = g_type_register_static (GTK_TYPE_SCROLLED_WINDOW,
 103                                                   "ModestTnyMsgView",
 104                                                   &my_info, 0);
 105         }
 106         return my_type;
 107 }
 108
 109 static void
 110 modest_tny_msg_view_class_init (ModestTnyMsgViewClass *klass)
 111 {
 112         GObjectClass *gobject_class;
 113         gobject_class = (GObjectClass*) klass;
 114
 115         parent_class            = g_type_class_peek_parent (klass);
 116         gobject_class->finalize = modest_tny_msg_view_finalize;
 117
 118         g_type_class_add_private (gobject_class, sizeof(ModestTnyMsgViewPrivate));
 119 }
 120
 121 static void
 122 modest_tny_msg_view_init (ModestTnyMsgView *obj)
 123 {
 124         ModestTnyMsgViewPrivate *priv;
 125
 126         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(obj);
 127
 128         priv->msg = NULL;
 129
 130         priv->gtkhtml = gtk_html_new();
 131
 132         priv->conf = NULL;
 133
 134         gtk_html_set_editable        (GTK_HTML(priv->gtkhtml), FALSE);
 135         gtk_html_allow_selection     (GTK_HTML(priv->gtkhtml), TRUE);
 136         gtk_html_set_caret_mode      (GTK_HTML(priv->gtkhtml), FALSE);
 137         gtk_html_set_blocking        (GTK_HTML(priv->gtkhtml), FALSE);
 138         gtk_html_set_images_blocking (GTK_HTML(priv->gtkhtml), FALSE);
 139
 140         g_signal_connect (G_OBJECT(priv->gtkhtml), "link_clicked",
 141                           G_CALLBACK(on_link_clicked), obj);
 142
 143         g_signal_connect (G_OBJECT(priv->gtkhtml), "url_requested",
 144                           G_CALLBACK(on_url_requested), obj);
 145 }
 146
 147
 148 static void
 149 modest_tny_msg_view_finalize (GObject *obj)
 150 {
 151
 152 }
 153
 154 GtkWidget*
 155 modest_tny_msg_view_new (TnyMsgIface *msg, ModestConf *conf)
 156 {
 157         GObject *obj;
 158         ModestTnyMsgView* self;
 159         ModestTnyMsgViewPrivate *priv;
 160
 161         obj  = G_OBJECT(g_object_new(MODEST_TYPE_TNY_MSG_VIEW, NULL));
 162         self = MODEST_TNY_MSG_VIEW(obj);
 163         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (self);
 164
 165         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(self),
 166                                        GTK_POLICY_AUTOMATIC,
 167                                        GTK_POLICY_AUTOMATIC);
 168
 169         if (priv->gtkhtml)
 170                 gtk_container_add (GTK_CONTAINER(obj), priv->gtkhtml);
 171
 172         if (msg)
 173                 modest_tny_msg_view_set_message (self, msg);
 174
 175         priv->conf = conf;
 176
 177         return GTK_WIDGET(self);
 178 }
 179
 180
 181
 182 static gboolean
 183 on_link_clicked (GtkWidget *widget, const gchar *uri,
 184                                  ModestTnyMsgView *msg_view)
 185 {
 186
 187         if (g_str_has_prefix(uri, ATTACHMENT_ID_LINK)) {
 188                 /* save or open attachment */
 189                 g_message ("link-to-save: %s", uri); /* FIXME */
 190                 return TRUE;
 191         }
 192         g_message ("link clicked: %s", uri); /* FIXME */
 193         return FALSE;
 194
 195 }
 196
 197
 198 static TnyMsgMimePartIface *
 199 find_cid_image (TnyMsgIface *msg, const gchar *cid)
 200 {
 201         TnyMsgMimePartIface *part = NULL;
 202         GList *parts;
 203
 204         g_return_val_if_fail (msg, NULL);
 205         g_return_val_if_fail (cid, NULL);
 206
 207         parts  = (GList*) tny_msg_iface_get_parts (msg);
 208         while (parts && !part) {
 209                 const gchar *part_cid;
 210                 part = TNY_MSG_MIME_PART_IFACE(parts->data);
 211                 part_cid = tny_msg_mime_part_iface_get_content_id (part);
 212                 printf("CMP:%s:%s\n", cid, part_cid);
 213                 if (part_cid && strcmp (cid, part_cid) == 0)
 214                         return part; /* we found it! */
 215
 216                 part = NULL;
 217                 parts = parts->next;
 218         }
 219
 220         return part;
 221 }
 222
 223
 224 static TnyMsgMimePartIface *
 225 find_attachment_by_filename (TnyMsgIface *msg, const gchar *fn)
 226 {
 227         TnyMsgMimePartIface *part = NULL;
 228         GList *parts;
 229         gchar *dummy;
 230         gint pos;
 231
 232         g_return_val_if_fail (msg, NULL);
 233         g_return_val_if_fail (fn, NULL);
 234
 235         parts  = (GList*) tny_msg_iface_get_parts (msg);
 236         pos = virtual_filename_get_pos(fn);
 237
 238         if ((pos < 0) || (pos >= g_list_length(parts)))
 239                 return NULL;
 240
 241         part = g_list_nth_data(parts, pos);
 242
 243         dummy = construct_virtual_filename_from_mime_part(part, pos);
 244         if (strcmp(dummy, fn) == 0) {
 245                 g_free(dummy);
 246                 return part;
 247         } else {
 248                 g_free(dummy);
 249                 return NULL;
 250         }
 251 }
 252
 253
 254 static gboolean
 255 on_url_requested (GtkWidget *widget, const gchar *uri,
 256                   GtkHTMLStream *stream,
 257                   ModestTnyMsgView *msg_view)
 258 {
 259
 260         ModestTnyMsgViewPrivate *priv;
 261         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (msg_view);
 262
 263         g_message ("url requested: %s", uri);
 264
 265         if (!modest_conf_get_bool(priv->conf,
 266                     MODEST_CONF_MSG_VIEW_SHOW_ATTACHMENTS_INLINE, NULL))
 267                 return TRUE; /* debatable */
 268
 269         if (g_str_has_prefix (uri, "cid:")) {
 270                 /* +4 ==> skip "cid:" */
 271
 272                 TnyMsgMimePartIface *part = find_cid_image (priv->msg, uri + 4);
 273                 if (!part) {
 274                         g_message ("%s not found", uri + 4);
 275                         gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
 276                 } else {
 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);
 281                 }
 282         } else if (g_str_has_prefix (uri, ATTACHMENT_ID_INLINE)) {
 283                 TnyMsgMimePartIface *part;
 284                 part = find_attachment_by_filename (priv->msg, uri);
 285                 if (!part) {
 286                         g_message ("%s not found", uri);
 287                         gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
 288                 } else {
 289                         TnyStreamIface *tny_stream =
 290                                 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new(stream));
 291                         tny_msg_mime_part_iface_decode_to_stream (part,tny_stream);
 292                         gtk_html_stream_close (stream, GTK_HTML_STREAM_OK);
 293                 }
 294         }
 295         return TRUE;
 296 }
 297
 298
 299 typedef struct  {
 300         guint offset;
 301         guint len;
 302         const gchar* prefix;
 303 } url_match_t;
 304
 305
 306 static gchar *
 307 construct_virtual_filename(const gchar *filename,
 308                            const gint position,
 309                            const gchar *id,
 310                            const gboolean active)
 311 {
 312         GString *s;
 313
 314         if (position < 0)
 315                 return "AttachmentInvalid";
 316
 317         s = g_string_new("");
 318         if (active)
 319                 g_string_append(s, ATTACHMENT_ID_INLINE);
 320         else
 321                 g_string_append(s, ATTACHMENT_ID_LINK);
 322         g_string_append_printf(s, ":%d:", position);
 323         if (id)
 324                 g_string_append(s, id);
 325         g_string_append_c(s, ':');
 326         if (filename)
 327                 g_string_append(s, filename);
 328         g_string_append_c(s, ':');
 329         return g_string_free(s, FALSE);
 330 }
 331
 332
 333 static gchar *
 334 construct_virtual_filename_from_mime_part(TnyMsgMimePartIface *msg, const gint position)
 335 {
 336         const gchar *id, *filename;
 337         const gboolean active = TRUE;
 338
 339         filename = tny_msg_mime_part_iface_get_filename(
 340                                                                         TNY_MSG_MIME_PART_IFACE(msg));
 341         if (!filename)
 342                 filename = "[unknown]";
 343         id = tny_msg_mime_part_iface_get_content_id(
 344                                                                         TNY_MSG_MIME_PART_IFACE(msg));
 345
 346         return construct_virtual_filename(filename, position, id, active);
 347 }
 348
 349 const gchar *
 350 get_next_token(const gchar *s, gint *len)
 351 {
 352         gchar *i1, *i2;
 353         i1 = (char *) s;
 354         i2 = (char *) s;
 355
 356         while (i2[0]) {
 357                 if (i2[0] == ':')
 358                         break;
 359                 i2++;
 360         }
 361         if (!i2[0])
 362                 return NULL;
 363         *len = i2 - i1;
 364         return ++i2;
 365 }
 366
 367 /* maybe I should use libregexp */
 368 gint
 369 virtual_filename_get_pos(const gchar *filename)
 370 {
 371         const gchar *i1, *i2;
 372         gint len, pos;
 373         GString *dummy;
 374
 375         /* check prefix */
 376         if ((!g_str_has_prefix(filename, ATTACHMENT_ID_INLINE ":")) &&
 377             (!g_str_has_prefix(filename, ATTACHMENT_ID_LINK ":")))
 378                 return -1;
 379
 380         i2 = filename;
 381         i2 = get_next_token(i2, &len);
 382         i1 = i2;
 383
 384         /* get position */
 385         i2 = get_next_token(i2, &len);
 386         if (i2 == NULL)
 387                 return -1;
 388         dummy = g_string_new_len(i1, len);
 389         pos = atoi(dummy->str);
 390         g_string_free(dummy, FALSE);
 391         return pos;
 392 }
 393
 394
 395 static gchar *
 396 attachments_as_html(ModestTnyMsgView *self, TnyMsgIface *msg)
 397 {
 398         ModestTnyMsgViewPrivate *priv;
 399         gboolean attachments_found = FALSE;
 400         GString *appendix;
 401         const GList *attachment_list, *attachment;
 402         const gchar *content_type, *filename, *id;
 403         gchar *virtual_filename;
 404         gboolean show_attachments_inline;
 405
 406         if (!msg)
 407                 return g_malloc0(1);
 408
 409         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (self);
 410
 411         appendix = g_string_new("");
 412         g_string_printf(appendix, "<HTML><BODY>\n<hr><h5>%s:</h5>\n", _("Attachments"));
 413
 414         attachment_list = tny_msg_iface_get_parts(msg);
 415         attachment = attachment_list;
 416         while (attachment) {
 417                 filename = "";
 418                 content_type = tny_msg_mime_part_iface_get_content_type(
 419                                                                                 TNY_MSG_MIME_PART_IFACE(attachment->data));
 420                 if (!content_type)
 421                         continue;
 422
 423                 if ((strcmp("image/jpeg", content_type) == 0) ||
 424                         (strcmp("image/gif",  content_type) == 0)) {
 425                         filename = tny_msg_mime_part_iface_get_filename(
 426                                 TNY_MSG_MIME_PART_IFACE(attachment->data));
 427                         if (!filename)
 428                                 filename = "[unknown]";
 429                         else
 430                                 attachments_found = TRUE;
 431                         id = tny_msg_mime_part_iface_get_content_id(
 432                                                                                 TNY_MSG_MIME_PART_IFACE(attachment->data));
 433                         show_attachments_inline = modest_conf_get_bool(priv->conf,
 434                                 MODEST_CONF_MSG_VIEW_SHOW_ATTACHMENTS_INLINE, NULL);
 435                         if (show_attachments_inline) {
 436                                 virtual_filename = construct_virtual_filename(filename,
 437                                         g_list_position((GList *)attachment_list, (GList *) attachment),
 438                                         id, TRUE);
 439                                 g_string_append_printf(appendix, "<IMG src=\"%s\">\n<BR>", virtual_filename);
 440                                 g_free(virtual_filename);
 441                         }
 442                         virtual_filename = construct_virtual_filename(filename,
 443                                         g_list_position((GList *)attachment_list, (GList *) attachment),
 444                                         id, FALSE);
 445                         g_string_append_printf(appendix,
 446                                 "<A href=\"%s\">%s</A>: %s<BR>\n",
 447                                 virtual_filename, filename, content_type);
 448                         g_free(virtual_filename);
 449                 }
 450                 attachment = attachment->next;
 451         }
 452         g_string_append(appendix, "</BODY></HTML>");
 453         if (!attachments_found)
 454                 g_string_assign(appendix, "");
 455         return g_string_free(appendix, FALSE);
 456 }
 457
 458 static void
 459 hyperlinkify_plain_text (GString *txt)
 460 {
 461         GSList *cursor;
 462         GSList *match_list = get_url_matches (txt);
 463
 464         /* we will work backwards, so the offsets stay valid */
 465         for (cursor = match_list; cursor; cursor = cursor->next) {
 466
 467                 url_match_t *match = (url_match_t*) cursor->data;
 468                 gchar *url  = g_strndup (txt->str + match->offset, match->len);
 469                 gchar *repl = NULL; /* replacement  */
 470
 471                 /* the prefix is NULL: use the one that is already there */
 472                 repl = g_strdup_printf ("<a href=\"%s%s\">%s</a>",
 473                                         match->prefix ? match->prefix : "", url, url);
 474
 475                 /* replace the old thing with our hyperlink
 476                  * replacement thing */
 477                 g_string_erase  (txt, match->offset, match->len);
 478                 g_string_insert (txt, match->offset, repl);
 479
 480                 g_free (url);
 481                 g_free (repl);
 482
 483                 g_free (cursor->data);
 484         }
 485
 486         g_slist_free (match_list);
 487 }
 488
 489
 490
 491 static gchar *
 492 convert_to_html (const gchar *data)
 493 {
 494         int              i;
 495         gboolean         first_space = TRUE;
 496         GString         *html;
 497         gsize           len;
 498
 499         if (!data)
 500                 return NULL;
 501
 502         len = strlen (data);
 503         html = g_string_sized_new (len + 100);  /* just a  guess... */
 504
 505         g_string_append_printf (html,
 506                                 "<html>"
 507                                 "<head>"
 508                                 "<meta http-equiv=\"content-type\""
 509                                 " content=\"text/html; charset=utf8\">"
 510                                 "</head>"
 511                                 "<body><tt>");
 512
 513         /* replace with special html chars where needed*/
 514         for (i = 0; i != len; ++i)  {
 515                 char    kar = data[i];
 516                 switch (kar) {
 517
 518                 case 0:  break; /* ignore embedded \0s */
 519                 case '<' : g_string_append   (html, "&lt;"); break;
 520                 case '>' : g_string_append   (html, "&gt;"); break;
 521                 case '&' : g_string_append   (html, "&quot;"); break;
 522                 case '\n': g_string_append   (html, "<br>\n"); break;
 523                 default:
 524                         if (kar == ' ') {
 525                                 g_string_append (html, first_space ? " " : "&nbsp;");
 526                                 first_space = FALSE;
 527                         } else  if (kar == '\t')
 528                                 g_string_append (html, "&nbsp; &nbsp;&nbsp;");
 529                         else {
 530                                 int charnum = 0;
 531                                 first_space = TRUE;
 532                                 /* optimization trick: accumulate 'normal' chars, then copy */
 533                                 do {
 534                                         kar = data [++charnum + i];
 535
 536                                 } while ((i + charnum < len) &&
 537                                          (kar > '>' || (kar != '<' && kar != '>'
 538                                                         && kar != '&' && kar !=  ' '
 539                                                         && kar != '\n' && kar != '\t')));
 540                                 g_string_append_len (html, &data[i], charnum);
 541                                 i += (charnum  - 1);
 542                         }
 543                 }
 544         }
 545
 546         g_string_append (html, "</tt></body></html>");
 547         hyperlinkify_plain_text (html);
 548
 549         return g_string_free (html, FALSE);
 550 }
 551
 552
 553
 554
 555 static gint
 556 cmp_offsets_reverse (const url_match_t *match1, const url_match_t *match2)
 557 {
 558         return match2->offset - match1->offset;
 559 }
 560
 561
 562
 563 /*
 564  * check if the match is inside an existing match... */
 565 static void
 566 chk_partial_match (const url_match_t *match, int* offset)
 567 {
 568         if (*offset >= match->offset && *offset < match->offset + match->len)
 569                 *offset = -1;
 570 }
 571
 572 static GSList*
 573 get_url_matches (GString *txt)
 574 {
 575         regmatch_t rm;
 576         int rv, i, offset = 0;
 577         GSList *match_list = NULL;
 578
 579         static UrlMatchPattern patterns[] = MAIL_VIEWER_URL_MATCH_PATTERNS;
 580         const size_t pattern_num = sizeof(patterns)/sizeof(UrlMatchPattern);
 581
 582         /* initalize the regexps */
 583         for (i = 0; i != pattern_num; ++i) {
 584                 patterns[i].preg = g_new0 (regex_t,1);
 585                 g_assert(regcomp (patterns[i].preg, patterns[i].regex,
 586                                   REG_ICASE|REG_EXTENDED|REG_NEWLINE) == 0);
 587         }
 588         /* find all the matches */
 589         for (i = 0; i != pattern_num; ++i) {
 590                 offset     = 0;
 591                 while (1) {
 592                         int test_offset;
 593                         if ((rv = regexec (patterns[i].preg, txt->str + offset, 1, &rm, 0)) != 0) {
 594                                 g_assert (rv == REG_NOMATCH); /* this should not happen */
 595                                 break; /* try next regexp */
 596                         }
 597                         if (rm.rm_so == -1)
 598                                 break;
 599
 600                         /* FIXME: optimize this */
 601                         /* to avoid partial matches on something that was already found... */
 602                         /* check_partial_match will put -1 in the data ptr if that is the case */
 603                         test_offset = offset + rm.rm_so;
 604                         g_slist_foreach (match_list, (GFunc)chk_partial_match, &test_offset);
 605
 606                         /* make a list of our matches (<offset, len, prefix> tupels)*/
 607                         if (test_offset != -1) {
 608                                 url_match_t *match = g_new (url_match_t,1);
 609                                 match->offset = offset + rm.rm_so;
 610                                 match->len    = rm.rm_eo - rm.rm_so;
 611                                 match->prefix = patterns[i].prefix;
 612                                 match_list = g_slist_prepend (match_list, match);
 613                         }
 614                         offset += rm.rm_eo;
 615                 }
 616         }
 617
 618         for (i = 0; i != pattern_num; ++i) {
 619                 regfree (patterns[i].preg);
 620                 g_free  (patterns[i].preg);
 621         } /* don't free patterns itself -- it's static */
 622
 623         /* now sort the list, so the matches are in reverse order of occurence.
 624          * that way, we can do the replacements starting from the end, so we don't need
 625          * to recalculate the offsets
 626          */
 627         match_list = g_slist_sort (match_list,
 628                                    (GCompareFunc)cmp_offsets_reverse);
 629         return match_list;
 630 }
 631
 632 static gboolean
 633 fill_gtkhtml_with_txt (ModestTnyMsgView *self, GtkHTML* gtkhtml, const gchar* txt, TnyMsgIface *msg)
 634 {
 635         GString *html;
 636         gchar *html_attachments;
 637
 638         g_return_val_if_fail (gtkhtml, FALSE);
 639         g_return_val_if_fail (txt, FALSE);
 640
 641         html = g_string_new(convert_to_html (txt));
 642         html_attachments = attachments_as_html(self, msg);
 643         g_string_append(html, html_attachments);
 644
 645         gtk_html_load_from_string (gtkhtml, html->str, html->len);
 646         g_string_free (html, TRUE);
 647         g_free(html_attachments);
 648
 649         return TRUE;
 650 }
 651
 652
 653
 654 static gboolean
 655 set_html_message (ModestTnyMsgView *self, TnyMsgMimePartIface *tny_body, TnyMsgIface *msg)
 656 {
 657         gchar *html_attachments;
 658         TnyStreamIface *gtkhtml_stream;
 659         ModestTnyMsgViewPrivate *priv;
 660
 661         g_return_val_if_fail (self, FALSE);
 662         g_return_val_if_fail (tny_body, FALSE);
 663
 664         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 665
 666         gtkhtml_stream =
 667                 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new
 668                                  (gtk_html_begin(GTK_HTML(priv->gtkhtml))));
 669
 670         tny_stream_iface_reset (gtkhtml_stream);
 671         tny_msg_mime_part_iface_decode_to_stream (tny_body, gtkhtml_stream);
 672         html_attachments = attachments_as_html(self, msg);
 673         tny_stream_iface_write (gtkhtml_stream, html_attachments, strlen(html_attachments));
 674         tny_stream_iface_reset (gtkhtml_stream);
 675
 676         g_object_unref (G_OBJECT(gtkhtml_stream));
 677         g_free (html_attachments);
 678
 679         return TRUE;
 680 }
 681
 682
 683 /* this is a hack --> we use the tny_text_buffer_stream to
 684  * get the message text, then write to gtkhtml 'by hand' */
 685 static gboolean
 686 set_text_message (ModestTnyMsgView *self, TnyMsgMimePartIface *tny_body, TnyMsgIface *msg)
 687 {
 688         GtkTextBuffer *buf;
 689         GtkTextIter begin, end;
 690         TnyStreamIface* txt_stream;
 691         gchar *txt;
 692         ModestTnyMsgViewPrivate *priv;
 693
 694         g_return_val_if_fail (self, FALSE);
 695         g_return_val_if_fail (tny_body, FALSE);
 696
 697         priv           = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 698
 699         buf            = gtk_text_buffer_new (NULL);
 700         txt_stream     = TNY_STREAM_IFACE(tny_text_buffer_stream_new (buf));
 701
 702         tny_stream_iface_reset (txt_stream);
 703         tny_msg_mime_part_iface_decode_to_stream (tny_body, txt_stream);
 704         tny_stream_iface_reset (txt_stream);
 705
 706         gtk_text_buffer_get_bounds (buf, &begin, &end);
 707         txt = gtk_text_buffer_get_text (buf, &begin, &end, FALSE);
 708
 709         fill_gtkhtml_with_txt (self, GTK_HTML(priv->gtkhtml), txt, msg);
 710
 711         g_object_unref (G_OBJECT(txt_stream));
 712         g_object_unref (G_OBJECT(buf));
 713
 714         g_free (txt);
 715         return TRUE;
 716 }
 717
 718 gchar *
 719 modest_tny_msg_view_get_selected_text (ModestTnyMsgView *self)
 720 {
 721         ModestTnyMsgViewPrivate *priv;
 722         gchar *sel;
 723         GtkWidget *html;
 724         int len;
 725         GtkClipboard *clip;
 726
 727         g_return_val_if_fail (self, NULL);
 728         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 729         html = priv->gtkhtml;
 730
 731         /* I'm sure there is a better way to check for selected text */
 732         sel = gtk_html_get_selection_html(GTK_HTML(html), &len);
 733         if (!sel)
 734                 return NULL;
 735
 736         g_free(sel);
 737
 738         clip = gtk_widget_get_clipboard(html, GDK_SELECTION_PRIMARY);
 739         return gtk_clipboard_wait_for_text(clip);
 740 }
 741
 742 void
 743 modest_tny_msg_view_set_message (ModestTnyMsgView *self, TnyMsgIface *msg)
 744 {
 745         TnyMsgMimePartIface *body;
 746         ModestTnyMsgViewPrivate *priv;
 747
 748         g_return_if_fail (self);
 749
 750         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 751
 752         priv->msg = msg;
 753
 754         fill_gtkhtml_with_txt (self, GTK_HTML(priv->gtkhtml), "", msg);
 755
 756         if (!msg)
 757                 return;
 758
 759         body = modest_tny_msg_actions_find_body_part (msg, "text/html");
 760         if (body) {
 761                 set_html_message (self, body, msg);
 762                 return;
 763         }
 764
 765         body = modest_tny_msg_actions_find_body_part (msg, "text/plain");
 766         if (body) {
 767                 set_text_message (self, body, msg);
 768                 return;
 769         }
 770
 771         /* hmmmmm */
 772         fill_gtkhtml_with_txt (self, GTK_HTML(priv->gtkhtml),
 773                                 _("Unsupported message type"), msg);
 774 }
 775
 776 void
 777 modest_tny_msg_view_redraw (ModestTnyMsgView *self)
 778 {
 779         ModestTnyMsgViewPrivate *priv;
 780
 781         g_return_if_fail (self);
 782         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 783         modest_tny_msg_view_set_message(self, priv->msg);
 784 }