git.maemo.org Git - modest/blob - src/widgets/modest-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-gtk-text-buffer-stream.h>
  31 #include <string.h>
  32 #include <regex.h>
  33 #include <ctype.h>
  34 #include <stdlib.h>
  35 #include <glib/gi18n.h>
  36 #include <gtkhtml/gtkhtml.h>
  37 #include <gtkhtml/gtkhtml-stream.h>
  38 #include <tny-list.h>
  39 #include <tny-simple-list.h>
  40
  41 #include <modest-tny-msg.h>
  42 #include <modest-text-utils.h>
  43 #include "modest-msg-view.h"
  44 #include "modest-tny-stream-gtkhtml.h"
  45
  46
  47 /* 'private'/'protected' functions */
  48 static void     modest_msg_view_class_init   (ModestMsgViewClass *klass);
  49 static void     modest_msg_view_init         (ModestMsgView *obj);
  50 static void     modest_msg_view_finalize     (GObject *obj);
  51
  52 static gboolean on_link_clicked (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view);
  53 static gboolean on_url_requested (GtkWidget *widget, const gchar *uri, GtkHTMLStream *stream,
  54                                   ModestMsgView *msg_view);
  55 static gboolean on_link_hover (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view);
  56
  57 #define ATT_PREFIX "att:"
  58
  59 /* list my signals */
  60 enum {
  61         LINK_CLICKED_SIGNAL,
  62         LINK_HOVER_SIGNAL,
  63         ATTACHMENT_CLICKED_SIGNAL,
  64         LAST_SIGNAL
  65 };
  66
  67 typedef struct _ModestMsgViewPrivate ModestMsgViewPrivate;
  68 struct _ModestMsgViewPrivate {
  69         GtkWidget   *gtkhtml;
  70         TnyMsg      *msg;
  71
  72         gulong  sig1, sig2, sig3;
  73 };
  74 #define MODEST_MSG_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  75                                                  MODEST_TYPE_MSG_VIEW, \
  76                                                  ModestMsgViewPrivate))
  77 /* globals */
  78 static GtkContainerClass *parent_class = NULL;
  79
  80 /* uncomment the following if you have defined any signals */
  81 static guint signals[LAST_SIGNAL] = {0};
  82
  83 GType
  84 modest_msg_view_get_type (void)
  85 {
  86         static GType my_type = 0;
  87         if (!my_type) {
  88                 static const GTypeInfo my_info = {
  89                         sizeof(ModestMsgViewClass),
  90                         NULL,           /* base init */
  91                         NULL,           /* base finalize */
  92                         (GClassInitFunc) modest_msg_view_class_init,
  93                         NULL,           /* class finalize */
  94                         NULL,           /* class data */
  95                         sizeof(ModestMsgView),
  96                         1,              /* n_preallocs */
  97                         (GInstanceInitFunc) modest_msg_view_init,
  98                         NULL
  99                 };
 100                 my_type = g_type_register_static (GTK_TYPE_SCROLLED_WINDOW,
 101                                                   "ModestMsgView",
 102                                                   &my_info, 0);
 103         }
 104         return my_type;
 105 }
 106
 107 static void
 108 modest_msg_view_class_init (ModestMsgViewClass *klass)
 109 {
 110         GObjectClass *gobject_class;
 111         gobject_class = (GObjectClass*) klass;
 112
 113         parent_class            = g_type_class_peek_parent (klass);
 114         gobject_class->finalize = modest_msg_view_finalize;
 115
 116         g_type_class_add_private (gobject_class, sizeof(ModestMsgViewPrivate));
 117
 118
 119         signals[LINK_CLICKED_SIGNAL] =
 120                 g_signal_new ("link_clicked",
 121                               G_TYPE_FROM_CLASS (gobject_class),
 122                               G_SIGNAL_RUN_FIRST,
 123                               G_STRUCT_OFFSET(ModestMsgViewClass, link_clicked),
 124                               NULL, NULL,
 125                               g_cclosure_marshal_VOID__STRING,
 126                               G_TYPE_NONE, 1, G_TYPE_STRING);
 127
 128         signals[ATTACHMENT_CLICKED_SIGNAL] =
 129                 g_signal_new ("attachment_clicked",
 130                               G_TYPE_FROM_CLASS (gobject_class),
 131                               G_SIGNAL_RUN_FIRST,
 132                               G_STRUCT_OFFSET(ModestMsgViewClass, attachment_clicked),
 133                               NULL, NULL,
 134                               g_cclosure_marshal_VOID__POINTER,
 135                               G_TYPE_NONE, 1, G_TYPE_INT);
 136
 137         signals[LINK_HOVER_SIGNAL] =
 138                 g_signal_new ("link_hover",
 139                               G_TYPE_FROM_CLASS (gobject_class),
 140                               G_SIGNAL_RUN_FIRST,
 141                               G_STRUCT_OFFSET(ModestMsgViewClass, link_hover),
 142                               NULL, NULL,
 143                               g_cclosure_marshal_VOID__STRING,
 144                               G_TYPE_NONE, 1, G_TYPE_STRING);
 145 }
 146
 147 static void
 148 modest_msg_view_init (ModestMsgView *obj)
 149 {
 150         ModestMsgViewPrivate *priv;
 151
 152         priv = MODEST_MSG_VIEW_GET_PRIVATE(obj);
 153
 154         priv->msg                     = NULL;
 155         priv->gtkhtml                 = gtk_html_new();
 156
 157         gtk_html_set_editable        (GTK_HTML(priv->gtkhtml), FALSE);
 158         gtk_html_allow_selection     (GTK_HTML(priv->gtkhtml), TRUE);
 159         gtk_html_set_caret_mode      (GTK_HTML(priv->gtkhtml), FALSE);
 160         gtk_html_set_blocking        (GTK_HTML(priv->gtkhtml), FALSE);
 161         gtk_html_set_images_blocking (GTK_HTML(priv->gtkhtml), FALSE);
 162
 163         priv->sig1 = g_signal_connect (G_OBJECT(priv->gtkhtml), "link_clicked",
 164                                        G_CALLBACK(on_link_clicked), obj);
 165         priv->sig2 = g_signal_connect (G_OBJECT(priv->gtkhtml), "url_requested",
 166                                        G_CALLBACK(on_url_requested), obj);
 167         priv->sig3 = g_signal_connect (G_OBJECT(priv->gtkhtml), "on_url",
 168                                        G_CALLBACK(on_link_hover), obj);
 169 }
 170
 171
 172 static void
 173 modest_msg_view_finalize (GObject *obj)
 174 {
 175         ModestMsgViewPrivate *priv;
 176         priv = MODEST_MSG_VIEW_GET_PRIVATE (obj);
 177
 178         if (priv->msg) {
 179                 g_object_unref (G_OBJECT(priv->msg));
 180                 priv->msg = NULL;
 181         }
 182
 183         /* we cannot disconnect sigs, because priv->gtkhtml is
 184          * already dead */
 185
 186         priv->gtkhtml = NULL;
 187
 188         G_OBJECT_CLASS(parent_class)->finalize (obj);
 189 }
 190
 191
 192 GtkWidget*
 193 modest_msg_view_new (TnyMsg *msg)
 194 {
 195         GObject *obj;
 196         ModestMsgView* self;
 197         ModestMsgViewPrivate *priv;
 198
 199         obj  = G_OBJECT(g_object_new(MODEST_TYPE_MSG_VIEW, NULL));
 200         self = MODEST_MSG_VIEW(obj);
 201         priv = MODEST_MSG_VIEW_GET_PRIVATE (self);
 202
 203         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(self),
 204                                        GTK_POLICY_AUTOMATIC,
 205                                        GTK_POLICY_AUTOMATIC);
 206         if (priv->gtkhtml)
 207                 gtk_container_add (GTK_CONTAINER(obj), priv->gtkhtml);
 208
 209         if (msg)
 210                 modest_msg_view_set_message (self, msg);
 211
 212         return GTK_WIDGET(self);
 213 }
 214
 215
 216 static gboolean
 217 on_link_clicked (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view)
 218 {
 219         int index;
 220
 221         g_return_val_if_fail (msg_view, FALSE);
 222
 223         /* is it an attachment? */
 224         if (g_str_has_prefix(uri, ATT_PREFIX)) {
 225
 226                 index = atoi (uri + strlen(ATT_PREFIX));
 227
 228                 if (index == 0) {
 229                         /* index is 1-based, so 0 indicates an error */
 230                         g_printerr ("modest: invalid attachment id: %s\n", uri);
 231                         return FALSE;
 232                 }
 233
 234                 g_signal_emit (G_OBJECT(msg_view), signals[ATTACHMENT_CLICKED_SIGNAL],
 235                                0, index);
 236                 return FALSE;
 237         }
 238
 239         g_signal_emit (G_OBJECT(msg_view), signals[LINK_CLICKED_SIGNAL],
 240                        0, uri);
 241
 242         return FALSE;
 243 }
 244
 245
 246
 247 static gboolean
 248 on_link_hover (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view)
 249 {
 250         if (uri && g_str_has_prefix (uri, ATT_PREFIX))
 251                 return FALSE;
 252
 253         g_signal_emit (G_OBJECT(msg_view), signals[LINK_HOVER_SIGNAL],
 254                        0, uri);
 255
 256         return FALSE;
 257 }
 258
 259
 260
 261 static TnyMimePart *
 262 find_cid_image (TnyMsg *msg, const gchar *cid)
 263 {
 264         TnyMimePart *part = NULL;
 265         TnyList *parts;
 266         TnyIterator *iter;
 267
 268         g_return_val_if_fail (msg, NULL);
 269         g_return_val_if_fail (cid, NULL);
 270
 271         parts  = TNY_LIST (tny_simple_list_new());
 272
 273         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 274         iter   = tny_list_create_iterator (parts);
 275
 276         while (!tny_iterator_is_done(iter)) {
 277                 const gchar *part_cid;
 278                 part = TNY_MIME_PART(tny_iterator_get_current(iter));
 279                 part_cid = tny_mime_part_get_content_id (part);
 280
 281                 if (part_cid && strcmp (cid, part_cid) == 0)
 282                         break;
 283
 284                 g_object_unref (G_OBJECT(part));
 285
 286                 part = NULL;
 287                 tny_iterator_next (iter);
 288         }
 289
 290         g_object_unref (G_OBJECT(iter));
 291         g_object_unref (G_OBJECT(parts));
 292
 293         return part;
 294 }
 295
 296
 297 static gboolean
 298 on_url_requested (GtkWidget *widget, const gchar *uri,
 299                   GtkHTMLStream *stream, ModestMsgView *msg_view)
 300 {
 301         ModestMsgViewPrivate *priv;
 302         priv = MODEST_MSG_VIEW_GET_PRIVATE (msg_view);
 303
 304         if (g_str_has_prefix (uri, "cid:")) {
 305                 /* +4 ==> skip "cid:" */
 306                 TnyMimePart *part = find_cid_image (priv->msg, uri + 4);
 307                 if (!part) {
 308                         g_printerr ("modest: '%s' not found\n", uri + 4);
 309                         gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
 310                 } else {
 311                         TnyStream *tny_stream =
 312                                 TNY_STREAM(modest_tny_stream_gtkhtml_new(stream));
 313                         tny_mime_part_decode_to_stream ((TnyMimePart*)part,
 314                                                                   tny_stream);
 315                         gtk_html_stream_close (stream, GTK_HTML_STREAM_OK);
 316
 317                         g_object_unref (G_OBJECT(tny_stream));
 318                         g_object_unref (G_OBJECT(part));
 319                 }
 320         }
 321
 322         return TRUE;
 323 }
 324
 325
 326 /* render the attachments as hyperlinks in html */
 327 static gchar*
 328 attachments_as_html (ModestMsgView *self, TnyMsg *msg)
 329 {
 330         ModestMsgViewPrivate *priv;
 331         GString *appendix;
 332         TnyList *parts;
 333         TnyIterator *iter;
 334         gchar *html;
 335         int index = 0;
 336
 337         if (!msg)
 338                 return NULL;
 339
 340         priv  = MODEST_MSG_VIEW_GET_PRIVATE (self);
 341
 342         parts = TNY_LIST(tny_simple_list_new());
 343         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 344         iter  = tny_list_create_iterator (parts);
 345
 346         appendix= g_string_new ("");
 347
 348         while (!tny_iterator_is_done(iter)) {
 349                 TnyMimePart *part;
 350
 351                 ++index; /* attachment numbers are 1-based */
 352                 part = TNY_MIME_PART(tny_iterator_get_current (iter));
 353
 354                 if (tny_mime_part_is_attachment (part)) {
 355
 356                         const gchar *filename = tny_mime_part_get_filename(part);
 357                         if (!filename)
 358                                 filename = _("attachment");
 359
 360                         g_string_append_printf (appendix, "<a href=\"%s%d\">%s</a> \n",
 361                                                 ATT_PREFIX, index, filename);
 362                 }
 363
 364                 g_object_unref (G_OBJECT(part));
 365                 tny_iterator_next (iter);
 366         }
 367         g_object_unref (G_OBJECT(iter));
 368         g_object_unref (G_OBJECT(parts));
 369
 370         if (appendix->len == 0)
 371                 return g_string_free (appendix, TRUE);
 372
 373         html = g_strdup_printf ("<strong>%s:</strong> %s\n<hr>",
 374                                 _("Attachments"), appendix->str);
 375         g_string_free (appendix, TRUE);
 376
 377         return html;
 378 }
 379
 380
 381 static gchar*
 382 get_header_info (TnyMsg *msg, gboolean outgoing)
 383 {
 384         GString *str;
 385         TnyHeader *header;
 386
 387         if (!msg)
 388                 return NULL;
 389
 390         header = tny_msg_get_header (msg);
 391         if (!header) {
 392                 g_printerr ("modest: cannot get header info for message\n");
 393                 return NULL;
 394         }
 395
 396         str = g_string_new ("<table border=\"0\">\n");
 397
 398         if (outgoing) {
 399                 if (tny_header_get_to(header))
 400                         g_string_append_printf (str, "<tr><td><b>%s</b>:</td><td>%s</td></tr>\n", _("To"),
 401                                                 tny_header_get_to(header));
 402         } else {
 403                 if (tny_header_get_from (header))
 404                         g_string_append_printf (str, "<tr><td><b>%s</b>:</td><td>%s</td></tr>\n", _("From"),
 405                                                 tny_header_get_from(header));
 406         }
 407
 408         if (tny_header_get_subject (header))
 409                 g_string_append_printf (str, "<tr><td><b>%s</b>:</td><td>%s</td></tr>\n", _("Subject"),
 410                                         tny_header_get_subject(header));
 411
 412
 413         if (outgoing) {
 414                 gchar *sent =   modest_text_utils_get_display_date (tny_header_get_date_sent (header));
 415                 g_string_append_printf (str, "<tr><td><b>%s</b>:</td><td>%s</td></tr>\n", _("Sent"), sent);
 416                 g_free (sent);
 417         } else {
 418                 gchar *received = modest_text_utils_get_display_date (tny_header_get_date_received (header));
 419                 g_string_append_printf (str, "<tr><td><b>%s</b>:</td><td>%s</td></tr>\n", _("Received"),
 420                                         received);
 421                 g_free (received);
 422         }
 423         g_string_append (str, "</table>\n<hr>\n");
 424
 425         g_object_unref (G_OBJECT(header));
 426         return g_string_free (str, FALSE);
 427 }
 428
 429
 430
 431 static gboolean
 432 set_html_message (ModestMsgView *self, const gchar* header_info, TnyMimePart *tny_body, TnyMsg *msg)
 433 {
 434         gchar *html_attachments;
 435         GtkHTMLStream *gtkhtml_stream;
 436         TnyStream *tny_stream;
 437         ModestMsgViewPrivate *priv;
 438
 439         g_return_val_if_fail (self, FALSE);
 440         g_return_val_if_fail (tny_body, FALSE);
 441
 442         priv = MODEST_MSG_VIEW_GET_PRIVATE(self);
 443
 444         gtkhtml_stream = gtk_html_begin(GTK_HTML(priv->gtkhtml));
 445
 446         tny_stream     = TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream));
 447         tny_stream_reset (tny_stream);
 448
 449         if (header_info) {
 450                 tny_stream_write (tny_stream, header_info, strlen(header_info));
 451                 tny_stream_reset (tny_stream);
 452         }
 453
 454         html_attachments = attachments_as_html(self, msg);
 455         if (html_attachments) {
 456                 tny_stream_write (tny_stream, html_attachments, strlen(html_attachments));
 457                 tny_stream_reset (tny_stream);
 458                 g_free (html_attachments);
 459         }
 460
 461         tny_mime_part_decode_to_stream ((TnyMimePart*)tny_body, tny_stream);
 462         g_object_unref (G_OBJECT(tny_stream));
 463
 464         gtk_html_stream_destroy (gtkhtml_stream);
 465
 466         return TRUE;
 467 }
 468
 469
 470 /* FIXME: this is a hack --> we use the tny_text_buffer_stream to
 471  * get the message text, then write to gtkhtml 'by hand' */
 472 static gboolean
 473 set_text_message (ModestMsgView *self, const gchar* header_info, TnyMimePart *tny_body, TnyMsg *msg)
 474 {
 475         GtkTextBuffer *buf;
 476         GtkTextIter begin, end;
 477         TnyStream* txt_stream, *tny_stream;
 478         GtkHTMLStream *gtkhtml_stream;
 479         gchar *txt, *html_attachments;
 480         ModestMsgViewPrivate *priv;
 481
 482         g_return_val_if_fail (self, FALSE);
 483         g_return_val_if_fail (tny_body, FALSE);
 484
 485         priv           = MODEST_MSG_VIEW_GET_PRIVATE(self);
 486
 487         buf            = gtk_text_buffer_new (NULL);
 488         txt_stream     = TNY_STREAM(tny_gtk_text_buffer_stream_new (buf));
 489
 490         tny_stream_reset (txt_stream);
 491
 492         gtkhtml_stream = gtk_html_begin(GTK_HTML(priv->gtkhtml));
 493         tny_stream =  TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream));
 494
 495         if (header_info) {
 496                 tny_stream_write (tny_stream, header_info, strlen(header_info));
 497                 tny_stream_reset (tny_stream);
 498         }
 499
 500         html_attachments = attachments_as_html(self, msg);
 501         if (html_attachments) {
 502                 tny_stream_write (tny_stream, html_attachments,
 503                                         strlen(html_attachments));
 504                 tny_stream_reset (tny_stream);
 505                 g_free (html_attachments);
 506         }
 507
 508         // FIXME: tinymail
 509         tny_mime_part_decode_to_stream ((TnyMimePart*)tny_body, txt_stream);
 510         tny_stream_reset (txt_stream);
 511
 512         gtk_text_buffer_get_bounds (buf, &begin, &end);
 513         txt = gtk_text_buffer_get_text (buf, &begin, &end, FALSE);
 514         if (txt) {
 515                 gchar *html = modest_text_utils_convert_to_html (txt);
 516                 tny_stream_write (tny_stream, html, strlen(html));
 517                 tny_stream_reset (tny_stream);
 518                 g_free (txt);
 519                 g_free (html);
 520         }
 521
 522         g_object_unref (G_OBJECT(tny_stream));
 523         g_object_unref (G_OBJECT(txt_stream));
 524         g_object_unref (G_OBJECT(buf));
 525
 526         gtk_html_stream_destroy (gtkhtml_stream);
 527
 528         return TRUE;
 529 }
 530
 531
 532 static gboolean
 533 set_empty_message (ModestMsgView *self)
 534 {
 535         ModestMsgViewPrivate *priv;
 536
 537         g_return_val_if_fail (self, FALSE);
 538         priv           = MODEST_MSG_VIEW_GET_PRIVATE(self);
 539
 540         gtk_html_load_from_string (GTK_HTML(priv->gtkhtml),
 541                                    "", 1);
 542
 543         return TRUE;
 544 }
 545
 546
 547 void
 548 modest_msg_view_set_message (ModestMsgView *self, TnyMsg *msg)
 549 {
 550         TnyMimePart *body;
 551         ModestMsgViewPrivate *priv;
 552         gchar *header_info;
 553
 554         g_return_if_fail (self);
 555
 556         priv = MODEST_MSG_VIEW_GET_PRIVATE(self);
 557
 558         if (msg != priv->msg) {
 559                 if (priv->msg)
 560                         g_object_unref (G_OBJECT(priv->msg));
 561                 if (msg)
 562                         g_object_ref   (G_OBJECT(msg));
 563                 priv->msg = msg;
 564         }
 565
 566         if (!msg) {
 567                 set_empty_message (self);
 568                 return;
 569         }
 570
 571         header_info = get_header_info (msg, TRUE);
 572
 573         body = modest_tny_msg_find_body_part (msg,TRUE);
 574         if (body) {
 575                 if (tny_mime_part_content_type_is (body, "text/html"))
 576                         set_html_message (self, header_info, body, msg);
 577                 else
 578                         set_text_message (self, header_info, body, msg);
 579         } else
 580                 set_empty_message (self);
 581
 582         g_free (header_info);
 583 }
 584
 585
 586 TnyMsg*
 587 modest_msg_view_get_message (ModestMsgView *self)
 588 {
 589         g_return_val_if_fail (self, NULL);
 590
 591         return MODEST_MSG_VIEW_GET_PRIVATE(self)->msg;
 592 }