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