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