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