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

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <tny-text-buffer-stream.h>
  31 #include <string.h>
  32 #include <regex.h>
  33 #include <ctype.h>
  34 #include <glib/gi18n.h>
  35 #include <gtkhtml/gtkhtml.h>
  36 #include <gtkhtml/gtkhtml-stream.h>
  37 #include <tny-list-iface.h>
  38
  39 #include "modest-tny-msg-view.h"
  40 #include "modest-tny-stream-gtkhtml.h"
  41 #include "modest-tny-msg-actions.h"
  42
  43
  44 /* 'private'/'protected' functions */
  45 static void     modest_tny_msg_view_class_init   (ModestTnyMsgViewClass *klass);
  46 static void     modest_tny_msg_view_init         (ModestTnyMsgView *obj);
  47 static void     modest_tny_msg_view_finalize     (GObject *obj);
  48
  49
  50 static GSList*  get_url_matches (GString *txt);
  51 static gboolean on_link_clicked (GtkWidget *widget, const gchar *uri,
  52                                  ModestTnyMsgView *msg_view);
  53 static gboolean on_url_requested (GtkWidget *widget, const gchar *uri,
  54                                   GtkHTMLStream *stream,
  55                                   ModestTnyMsgView *msg_view);
  56
  57 /*
  58  * we need these regexps to find URLs in plain text e-mails
  59  */
  60 typedef struct _UrlMatchPattern UrlMatchPattern;
  61 struct _UrlMatchPattern {
  62         gchar   *regex;
  63         regex_t *preg;
  64         gchar   *prefix;
  65
  66 };
  67
  68 #define ATT_PREFIX "att:"
  69
  70 #define MAIL_VIEWER_URL_MATCH_PATTERNS  {                               \
  71         { "(file|http|ftp|https)://[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]+[-A-Za-z0-9_$%&=?/~#]",\
  72           NULL, NULL },\
  73         { "www\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
  74           NULL, "http://" },\
  75         { "ftp\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
  76           NULL, "ftp://" },\
  77         { "(voipto|callto|chatto|jabberto|xmpp):[-_a-z@0-9.\\+]+", \
  78            NULL, NULL},                                             \
  79         { "mailto:[-_a-z0-9.\\+]+@[-_a-z0-9.]+",                    \
  80           NULL, NULL},\
  81         { "[-_a-z0-9.\\+]+@[-_a-z0-9.]+",\
  82           NULL, "mailto:"}\
  83         }
  84
  85
  86 /* list my signals */
  87 enum {
  88         LINK_CLICKED_SIGNAL,
  89         ATTACHMENT_CLICKED_SIGNAL,
  90         LAST_SIGNAL
  91 };
  92
  93 typedef struct _ModestTnyMsgViewPrivate ModestTnyMsgViewPrivate;
  94 struct _ModestTnyMsgViewPrivate {
  95         GtkWidget *gtkhtml;
  96         const TnyMsgIface *msg;
  97 };
  98 #define MODEST_TNY_MSG_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  99                                                  MODEST_TYPE_TNY_MSG_VIEW, \
 100                                                  ModestTnyMsgViewPrivate))
 101 /* globals */
 102 static GtkContainerClass *parent_class = NULL;
 103
 104 /* uncomment the following if you have defined any signals */
 105 static guint signals[LAST_SIGNAL] = {0};
 106
 107 GType
 108 modest_tny_msg_view_get_type (void)
 109 {
 110         static GType my_type = 0;
 111         if (!my_type) {
 112                 static const GTypeInfo my_info = {
 113                         sizeof(ModestTnyMsgViewClass),
 114                         NULL,           /* base init */
 115                         NULL,           /* base finalize */
 116                         (GClassInitFunc) modest_tny_msg_view_class_init,
 117                         NULL,           /* class finalize */
 118                         NULL,           /* class data */
 119                         sizeof(ModestTnyMsgView),
 120                         1,              /* n_preallocs */
 121                         (GInstanceInitFunc) modest_tny_msg_view_init,
 122                 };
 123                 my_type = g_type_register_static (GTK_TYPE_SCROLLED_WINDOW,
 124                                                   "ModestTnyMsgView",
 125                                                   &my_info, 0);
 126         }
 127         return my_type;
 128 }
 129
 130 static void
 131 modest_tny_msg_view_class_init (ModestTnyMsgViewClass *klass)
 132 {
 133         GObjectClass *gobject_class;
 134         gobject_class = (GObjectClass*) klass;
 135
 136         parent_class            = g_type_class_peek_parent (klass);
 137         gobject_class->finalize = modest_tny_msg_view_finalize;
 138
 139         g_type_class_add_private (gobject_class, sizeof(ModestTnyMsgViewPrivate));
 140
 141
 142         signals[LINK_CLICKED_SIGNAL] =
 143                 g_signal_new ("link_clicked",
 144                               G_TYPE_FROM_CLASS (gobject_class),
 145                               G_SIGNAL_RUN_FIRST,
 146                               G_STRUCT_OFFSET(ModestTnyMsgViewClass, link_clicked),
 147                               NULL, NULL,
 148                               g_cclosure_marshal_VOID__STRING,
 149                               G_TYPE_NONE, 1, G_TYPE_STRING);
 150
 151         signals[ATTACHMENT_CLICKED_SIGNAL] =
 152                 g_signal_new ("attachment_clicked",
 153                               G_TYPE_FROM_CLASS (gobject_class),
 154                               G_SIGNAL_RUN_FIRST,
 155                               G_STRUCT_OFFSET(ModestTnyMsgViewClass, attachment_clicked),
 156                               NULL, NULL,
 157                               g_cclosure_marshal_VOID__POINTER,
 158                               G_TYPE_NONE, 1, G_TYPE_INT);
 159
 160 }
 161
 162 static void
 163 modest_tny_msg_view_init (ModestTnyMsgView *obj)
 164 {
 165         ModestTnyMsgViewPrivate *priv;
 166
 167         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(obj);
 168
 169         priv->msg                     = NULL;
 170         priv->gtkhtml                 = gtk_html_new();
 171
 172         gtk_html_set_editable        (GTK_HTML(priv->gtkhtml), FALSE);
 173         gtk_html_allow_selection     (GTK_HTML(priv->gtkhtml), TRUE);
 174         gtk_html_set_caret_mode      (GTK_HTML(priv->gtkhtml), FALSE);
 175         gtk_html_set_blocking        (GTK_HTML(priv->gtkhtml), FALSE);
 176         gtk_html_set_images_blocking (GTK_HTML(priv->gtkhtml), FALSE);
 177
 178         g_signal_connect (G_OBJECT(priv->gtkhtml), "link_clicked",
 179                           G_CALLBACK(on_link_clicked), obj);
 180
 181         g_signal_connect (G_OBJECT(priv->gtkhtml), "url_requested",
 182                           G_CALLBACK(on_url_requested), obj);
 183 }
 184
 185
 186 static void
 187 modest_tny_msg_view_finalize (GObject *obj)
 188 {
 189         G_OBJECT_CLASS(parent_class)->finalize (obj);
 190 }
 191
 192
 193 GtkWidget*
 194 modest_tny_msg_view_new (const TnyMsgIface *msg)
 195 {
 196         GObject *obj;
 197         ModestTnyMsgView* self;
 198         ModestTnyMsgViewPrivate *priv;
 199
 200         obj  = G_OBJECT(g_object_new(MODEST_TYPE_TNY_MSG_VIEW, NULL));
 201         self = MODEST_TNY_MSG_VIEW(obj);
 202         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (self);
 203
 204         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(self),
 205                                        GTK_POLICY_AUTOMATIC,
 206                                        GTK_POLICY_AUTOMATIC);
 207
 208         if (priv->gtkhtml)
 209                 gtk_container_add (GTK_CONTAINER(obj), priv->gtkhtml);
 210
 211         if (msg)
 212                 modest_tny_msg_view_set_message (self, msg);
 213
 214         return GTK_WIDGET(self);
 215 }
 216
 217
 218 static gboolean
 219 on_link_clicked (GtkWidget *widget, const gchar *uri, ModestTnyMsgView *msg_view)
 220 {
 221
 222         int index;
 223
 224         g_return_val_if_fail (msg_view, FALSE);
 225
 226         /* is it an attachment? */
 227         if (g_str_has_prefix(uri, ATT_PREFIX)) {
 228
 229                 index = atoi (uri + strlen(ATT_PREFIX));
 230
 231                 if (index == 0) {
 232                         /* index is 1-based, so 0 indicates an error */
 233                         g_printerr ("modest: invalid attachment id: %s\n", uri);
 234                         return FALSE;
 235                 }
 236
 237                 g_signal_emit (G_OBJECT(msg_view), signals[ATTACHMENT_CLICKED_SIGNAL],
 238                                0, index);
 239                 return FALSE;
 240         }
 241
 242         g_signal_emit (G_OBJECT(msg_view), signals[LINK_CLICKED_SIGNAL], 0, uri);
 243
 244         return FALSE;
 245 }
 246
 247
 248 static TnyMsgMimePartIface *
 249 find_cid_image (const TnyMsgIface *msg, const gchar *cid)
 250 {
 251         TnyMsgMimePartIface *part = NULL;
 252         const TnyListIface *parts;
 253         TnyIteratorIface *iter;
 254
 255         g_return_val_if_fail (msg, NULL);
 256         g_return_val_if_fail (cid, NULL);
 257
 258         parts  = tny_msg_iface_get_parts ((TnyMsgIface*)msg); // FIXME: tinymail
 259         iter   = tny_list_iface_create_iterator ((TnyListIface*)parts);
 260
 261         while (!tny_iterator_iface_is_done(iter)) {
 262                 const gchar *part_cid;
 263                 part = TNY_MSG_MIME_PART_IFACE(tny_iterator_iface_current(iter));
 264                 part_cid = tny_msg_mime_part_iface_get_content_id (part);
 265
 266                 if (part_cid && strcmp (cid, part_cid) == 0)
 267                         break;
 268
 269                 part = NULL;
 270                 tny_iterator_iface_next (iter);
 271         }
 272
 273         g_object_unref (G_OBJECT(iter));
 274         return part;
 275 }
 276
 277
 278 static gboolean
 279 on_url_requested (GtkWidget *widget, const gchar *uri,
 280                   GtkHTMLStream *stream,
 281                   ModestTnyMsgView *msg_view)
 282 {
 283         ModestTnyMsgViewPrivate *priv;
 284         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE (msg_view);
 285
 286         if (g_str_has_prefix (uri, "cid:")) {
 287                 /* +4 ==> skip "cid:" */
 288                 const TnyMsgMimePartIface *part = find_cid_image (priv->msg, uri + 4);
 289                 if (!part) {
 290                         g_printerr ("modest: '%s' not found\n", uri + 4);
 291                         gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
 292                 } else {
 293                         TnyStreamIface *tny_stream =
 294                                 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new(stream));
 295                         // FIXME: tinymail
 296                         tny_msg_mime_part_iface_decode_to_stream ((TnyMsgMimePartIface*)part,
 297                                                                   tny_stream);
 298                         gtk_html_stream_close (stream, GTK_HTML_STREAM_OK);
 299                 }
 300         }
 301
 302         return TRUE;
 303 }
 304
 305
 306 typedef struct  {
 307         guint offset;
 308         guint len;
 309         const gchar* prefix;
 310 } url_match_t;
 311
 312
 313
 314 /* render the attachments as hyperlinks in html */
 315 static gchar*
 316 attachments_as_html (ModestTnyMsgView *self, const TnyMsgIface *msg)
 317 {
 318         ModestTnyMsgViewPrivate *priv;
 319         GString *appendix;
 320         const TnyListIface *parts;
 321         TnyIteratorIface *iter;
 322         gchar *html;
 323         int index = 0;
 324
 325         if (!msg)
 326                 return NULL;
 327
 328         priv  = MODEST_TNY_MSG_VIEW_GET_PRIVATE (self);
 329         parts = tny_msg_iface_get_parts ((TnyMsgIface*)msg);
 330         // FIXME: tinymail
 331         iter  = tny_list_iface_create_iterator ((TnyListIface*)parts);
 332
 333         appendix= g_string_new ("");
 334
 335         while (!tny_iterator_iface_is_done(iter)) {
 336                 TnyMsgMimePartIface *part;
 337
 338                 ++index; /* attachment numbers are 1-based */
 339
 340                 part = TNY_MSG_MIME_PART_IFACE(tny_iterator_iface_current (iter));
 341
 342                 if (tny_msg_mime_part_iface_is_attachment (part)) {
 343
 344                         const gchar *filename = tny_msg_mime_part_iface_get_filename(part);
 345                         if (!filename)
 346                                 filename = _("attachment");
 347
 348                         g_string_append_printf (appendix, "<a href=\"%s%d\">%s</a> \n",
 349                                                 ATT_PREFIX, index, filename);
 350                 }
 351                 tny_iterator_iface_next (iter);
 352         }
 353         g_object_unref (G_OBJECT(iter));
 354
 355         if (appendix->len == 0)
 356                 return g_string_free (appendix, TRUE);
 357
 358         html = g_strdup_printf ("<strong>%s:</strong> %s\n<hr>",
 359                                 _("Attachments"), appendix->str);
 360         g_string_free (appendix, TRUE);
 361
 362         return html;
 363 }
 364
 365
 366
 367 static void
 368 hyperlinkify_plain_text (GString *txt)
 369 {
 370         GSList *cursor;
 371         GSList *match_list = get_url_matches (txt);
 372
 373         /* we will work backwards, so the offsets stay valid */
 374         for (cursor = match_list; cursor; cursor = cursor->next) {
 375
 376                 url_match_t *match = (url_match_t*) cursor->data;
 377                 gchar *url  = g_strndup (txt->str + match->offset, match->len);
 378                 gchar *repl = NULL; /* replacement  */
 379
 380                 /* the prefix is NULL: use the one that is already there */
 381                 repl = g_strdup_printf ("<a href=\"%s%s\">%s</a>",
 382                                         match->prefix ? match->prefix : "", url, url);
 383
 384                 /* replace the old thing with our hyperlink
 385                  * replacement thing */
 386                 g_string_erase  (txt, match->offset, match->len);
 387                 g_string_insert (txt, match->offset, repl);
 388
 389                 g_free (url);
 390                 g_free (repl);
 391
 392                 g_free (cursor->data);
 393         }
 394
 395         g_slist_free (match_list);
 396 }
 397
 398
 399
 400 static gchar *
 401 convert_to_html (const gchar *data)
 402 {
 403         int              i;
 404         gboolean         first_space = TRUE;
 405         GString         *html;
 406         gsize           len;
 407
 408         if (!data)
 409                 return NULL;
 410
 411         len = strlen (data);
 412         html = g_string_sized_new (len + 100);  /* just a  guess... */
 413
 414         g_string_append_printf (html,
 415                                 "<html>"
 416                                 "<head>"
 417                                 "<meta http-equiv=\"content-type\""
 418                                 " content=\"text/html; charset=utf8\">"
 419                                 "</head>"
 420                                 "<body><tt>");
 421
 422         /* replace with special html chars where needed*/
 423         for (i = 0; i != len; ++i)  {
 424                 char    kar = data[i];
 425                 switch (kar) {
 426
 427                 case 0:  break; /* ignore embedded \0s */
 428                 case '<' : g_string_append   (html, "&lt;"); break;
 429                 case '>' : g_string_append   (html, "&gt;"); break;
 430                 case '&' : g_string_append   (html, "&quot;"); break;
 431                 case '\n': g_string_append   (html, "<br>\n"); break;
 432                 default:
 433                         if (kar == ' ') {
 434                                 g_string_append (html, first_space ? " " : "&nbsp;");
 435                                 first_space = FALSE;
 436                         } else  if (kar == '\t')
 437                                 g_string_append (html, "&nbsp; &nbsp;&nbsp;");
 438                         else {
 439                                 int charnum = 0;
 440                                 first_space = TRUE;
 441                                 /* optimization trick: accumulate 'normal' chars, then copy */
 442                                 do {
 443                                         kar = data [++charnum + i];
 444
 445                                 } while ((i + charnum < len) &&
 446                                          (kar > '>' || (kar != '<' && kar != '>'
 447                                                         && kar != '&' && kar !=  ' '
 448                                                         && kar != '\n' && kar != '\t')));
 449                                 g_string_append_len (html, &data[i], charnum);
 450                                 i += (charnum  - 1);
 451                         }
 452                 }
 453         }
 454
 455         g_string_append (html, "</tt></body></html>");
 456         hyperlinkify_plain_text (html);
 457
 458         return g_string_free (html, FALSE);
 459 }
 460
 461
 462
 463
 464 static gint
 465 cmp_offsets_reverse (const url_match_t *match1, const url_match_t *match2)
 466 {
 467         return match2->offset - match1->offset;
 468 }
 469
 470
 471
 472 /*
 473  * check if the match is inside an existing match... */
 474 static void
 475 chk_partial_match (const url_match_t *match, int* offset)
 476 {
 477         if (*offset >= match->offset && *offset < match->offset + match->len)
 478                 *offset = -1;
 479 }
 480
 481 static GSList*
 482 get_url_matches (GString *txt)
 483 {
 484         regmatch_t rm;
 485         int rv, i, offset = 0;
 486         GSList *match_list = NULL;
 487
 488         static UrlMatchPattern patterns[] = MAIL_VIEWER_URL_MATCH_PATTERNS;
 489         const size_t pattern_num = sizeof(patterns)/sizeof(UrlMatchPattern);
 490
 491         /* initalize the regexps */
 492         for (i = 0; i != pattern_num; ++i) {
 493                 patterns[i].preg = g_new0 (regex_t,1);
 494                 g_assert(regcomp (patterns[i].preg, patterns[i].regex,
 495                                   REG_ICASE|REG_EXTENDED|REG_NEWLINE) == 0);
 496         }
 497         /* find all the matches */
 498         for (i = 0; i != pattern_num; ++i) {
 499                 offset     = 0;
 500                 while (1) {
 501                         int test_offset;
 502                         if ((rv = regexec (patterns[i].preg, txt->str + offset, 1, &rm, 0)) != 0) {
 503                                 g_assert (rv == REG_NOMATCH); /* this should not happen */
 504                                 break; /* try next regexp */
 505                         }
 506                         if (rm.rm_so == -1)
 507                                 break;
 508
 509                         /* FIXME: optimize this */
 510                         /* to avoid partial matches on something that was already found... */
 511                         /* check_partial_match will put -1 in the data ptr if that is the case */
 512                         test_offset = offset + rm.rm_so;
 513                         g_slist_foreach (match_list, (GFunc)chk_partial_match, &test_offset);
 514
 515                         /* make a list of our matches (<offset, len, prefix> tupels)*/
 516                         if (test_offset != -1) {
 517                                 url_match_t *match = g_new (url_match_t,1);
 518                                 match->offset = offset + rm.rm_so;
 519                                 match->len    = rm.rm_eo - rm.rm_so;
 520                                 match->prefix = patterns[i].prefix;
 521                                 match_list = g_slist_prepend (match_list, match);
 522                         }
 523                         offset += rm.rm_eo;
 524                 }
 525         }
 526
 527         for (i = 0; i != pattern_num; ++i) {
 528                 regfree (patterns[i].preg);
 529                 g_free  (patterns[i].preg);
 530         } /* don't free patterns itself -- it's static */
 531
 532         /* now sort the list, so the matches are in reverse order of occurence.
 533          * that way, we can do the replacements starting from the end, so we don't need
 534          * to recalculate the offsets
 535          */
 536         match_list = g_slist_sort (match_list,
 537                                    (GCompareFunc)cmp_offsets_reverse);
 538         return match_list;
 539 }
 540
 541
 542
 543 static gboolean
 544 set_html_message (ModestTnyMsgView *self, const TnyMsgMimePartIface *tny_body,
 545                   const TnyMsgIface *msg)
 546 {
 547         gchar *html_attachments;
 548         TnyStreamIface *gtkhtml_stream;
 549         ModestTnyMsgViewPrivate *priv;
 550
 551         g_return_val_if_fail (self, FALSE);
 552         g_return_val_if_fail (tny_body, FALSE);
 553
 554         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 555
 556         gtkhtml_stream =
 557                 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new
 558                                  (gtk_html_begin(GTK_HTML(priv->gtkhtml))));
 559
 560         tny_stream_iface_reset (gtkhtml_stream);
 561
 562         html_attachments = attachments_as_html(self, msg);
 563         if (html_attachments) {
 564                 tny_stream_iface_write (gtkhtml_stream, html_attachments,
 565                                         strlen(html_attachments));
 566                 tny_stream_iface_reset (gtkhtml_stream);
 567                 g_free (html_attachments);
 568         }
 569
 570         // FIXME: tinymail
 571         tny_msg_mime_part_iface_decode_to_stream ((TnyMsgMimePartIface*)tny_body,
 572                                                   gtkhtml_stream);
 573
 574         g_object_unref (G_OBJECT(gtkhtml_stream));
 575
 576         return TRUE;
 577 }
 578
 579
 580 /* this is a hack --> we use the tny_text_buffer_stream to
 581  * get the message text, then write to gtkhtml 'by hand' */
 582 static gboolean
 583 set_text_message (ModestTnyMsgView *self, const TnyMsgMimePartIface *tny_body,
 584                   const TnyMsgIface *msg)
 585 {
 586         GtkTextBuffer *buf;
 587         GtkTextIter begin, end;
 588         TnyStreamIface* txt_stream, *gtkhtml_stream;
 589         gchar *txt, *html_attachments;
 590         ModestTnyMsgViewPrivate *priv;
 591
 592         g_return_val_if_fail (self, FALSE);
 593         g_return_val_if_fail (tny_body, FALSE);
 594
 595         priv           = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 596
 597         buf            = gtk_text_buffer_new (NULL);
 598         txt_stream     = TNY_STREAM_IFACE(tny_text_buffer_stream_new (buf));
 599
 600         tny_stream_iface_reset (txt_stream);
 601
 602         gtkhtml_stream =
 603                 TNY_STREAM_IFACE(modest_tny_stream_gtkhtml_new
 604                                  (gtk_html_begin(GTK_HTML(priv->gtkhtml))));
 605
 606         html_attachments = attachments_as_html(self, msg);
 607         if (html_attachments) {
 608                 tny_stream_iface_write (gtkhtml_stream, html_attachments,
 609                                         strlen(html_attachments));
 610                 tny_stream_iface_reset (gtkhtml_stream);
 611                 g_free (html_attachments);
 612         }
 613
 614         // FIXME: tinymail
 615         tny_msg_mime_part_iface_decode_to_stream ((TnyMsgMimePartIface*)tny_body,
 616                                                   txt_stream);
 617         tny_stream_iface_reset (txt_stream);
 618
 619         gtk_text_buffer_get_bounds (buf, &begin, &end);
 620         txt = gtk_text_buffer_get_text (buf, &begin, &end, FALSE);
 621         if (txt) {
 622                 gchar *html = convert_to_html (txt);
 623                 tny_stream_iface_write (gtkhtml_stream, html, strlen(html));
 624                 tny_stream_iface_reset (gtkhtml_stream);
 625                 g_free (txt);
 626                 g_free (html);
 627         }
 628
 629         g_object_unref (G_OBJECT(gtkhtml_stream));
 630         g_object_unref (G_OBJECT(txt_stream));
 631         g_object_unref (G_OBJECT(buf));
 632
 633         return TRUE;
 634 }
 635
 636
 637 static gboolean
 638 set_empty_message (ModestTnyMsgView *self)
 639 {
 640         ModestTnyMsgViewPrivate *priv;
 641
 642         g_return_val_if_fail (self, FALSE);
 643         priv           = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 644
 645         gtk_html_load_from_string (priv->gtkhtml, "", 1);
 646
 647         return TRUE;
 648 }
 649
 650
 651 gchar *
 652 modest_tny_msg_view_get_selected_text (ModestTnyMsgView *self)
 653 {
 654         ModestTnyMsgViewPrivate *priv;
 655         gchar *sel;
 656         GtkWidget *html;
 657         int len;
 658         GtkClipboard *clip;
 659
 660         g_return_val_if_fail (self, NULL);
 661         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 662         html = priv->gtkhtml;
 663
 664         /* I'm sure there is a better way to check for selected text */
 665         sel = gtk_html_get_selection_html(GTK_HTML(html), &len);
 666         if (!sel)
 667                 return NULL;
 668
 669         g_free(sel);
 670
 671         clip = gtk_widget_get_clipboard(html, GDK_SELECTION_PRIMARY);
 672         return gtk_clipboard_wait_for_text(clip);
 673 }
 674
 675
 676 void
 677 modest_tny_msg_view_set_message (ModestTnyMsgView *self, const TnyMsgIface *msg)
 678 {
 679         TnyMsgMimePartIface *body;
 680         ModestTnyMsgViewPrivate *priv;
 681
 682         g_return_if_fail (self);
 683
 684         priv = MODEST_TNY_MSG_VIEW_GET_PRIVATE(self);
 685
 686         priv->msg = msg;
 687
 688         if (!msg) {
 689                 set_empty_message (self);
 690                 return;
 691         }
 692
 693         body = modest_tny_msg_actions_find_body_part (msg, TRUE);
 694         if (body) {
 695                 if (tny_msg_mime_part_iface_content_type_is (body, "text/html"))
 696                         set_html_message (self, body, msg);
 697                 else
 698                         set_text_message (self, body, msg);
 699                 return;
 700         } else
 701                 set_empty_message (self);
 702 }