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 #include <modest-attachments-view.h>
  47
  48
  49 /* 'private'/'protected' functions */
  50 static void     modest_msg_view_class_init   (ModestMsgViewClass *klass);
  51 static void     modest_msg_view_init         (ModestMsgView *obj);
  52 static void     modest_msg_view_finalize     (GObject *obj);
  53
  54 static void on_recpt_activated (ModestMailHeaderView *header_view, const gchar *address, ModestMsgView *msg_view);
  55 static gboolean on_link_clicked (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view);
  56 static gboolean on_url_requested (GtkWidget *widget, const gchar *uri, GtkHTMLStream *stream,
  57                                   ModestMsgView *msg_view);
  58 static gboolean on_link_hover (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view);
  59
  60 #define ATT_PREFIX "att:"
  61
  62 /* list my signals */
  63 enum {
  64         LINK_CLICKED_SIGNAL,
  65         LINK_HOVER_SIGNAL,
  66         ATTACHMENT_CLICKED_SIGNAL,
  67         RECPT_ACTIVATED_SIGNAL,
  68         LAST_SIGNAL
  69 };
  70
  71 typedef struct _ModestMsgViewPrivate ModestMsgViewPrivate;
  72 struct _ModestMsgViewPrivate {
  73         GtkWidget   *gtkhtml;
  74         GtkWidget   *mail_header_view;
  75         GtkWidget   *attachments_view;
  76
  77         TnyMsg      *msg;
  78
  79         gulong  sig1, sig2, sig3;
  80 };
  81 #define MODEST_MSG_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  82                                                  MODEST_TYPE_MSG_VIEW, \
  83                                                  ModestMsgViewPrivate))
  84 /* globals */
  85 static GtkContainerClass *parent_class = NULL;
  86
  87 /* uncomment the following if you have defined any signals */
  88 static guint signals[LAST_SIGNAL] = {0};
  89
  90 GType
  91 modest_msg_view_get_type (void)
  92 {
  93         static GType my_type = 0;
  94         if (!my_type) {
  95                 static const GTypeInfo my_info = {
  96                         sizeof(ModestMsgViewClass),
  97                         NULL,           /* base init */
  98                         NULL,           /* base finalize */
  99                         (GClassInitFunc) modest_msg_view_class_init,
 100                         NULL,           /* class finalize */
 101                         NULL,           /* class data */
 102                         sizeof(ModestMsgView),
 103                         1,              /* n_preallocs */
 104                         (GInstanceInitFunc) modest_msg_view_init,
 105                         NULL
 106                 };
 107                 my_type = g_type_register_static (GTK_TYPE_VBOX,
 108                                                   "ModestMsgView",
 109                                                   &my_info, 0);
 110         }
 111         return my_type;
 112 }
 113
 114 static void
 115 modest_msg_view_class_init (ModestMsgViewClass *klass)
 116 {
 117         GObjectClass *gobject_class;
 118         gobject_class = (GObjectClass*) klass;
 119
 120         parent_class            = g_type_class_peek_parent (klass);
 121         gobject_class->finalize = modest_msg_view_finalize;
 122
 123         g_type_class_add_private (gobject_class, sizeof(ModestMsgViewPrivate));
 124
 125
 126         signals[LINK_CLICKED_SIGNAL] =
 127                 g_signal_new ("link_clicked",
 128                               G_TYPE_FROM_CLASS (gobject_class),
 129                               G_SIGNAL_RUN_FIRST,
 130                               G_STRUCT_OFFSET(ModestMsgViewClass, link_clicked),
 131                               NULL, NULL,
 132                               g_cclosure_marshal_VOID__STRING,
 133                               G_TYPE_NONE, 1, G_TYPE_STRING);
 134
 135         signals[ATTACHMENT_CLICKED_SIGNAL] =
 136                 g_signal_new ("attachment_clicked",
 137                               G_TYPE_FROM_CLASS (gobject_class),
 138                               G_SIGNAL_RUN_FIRST,
 139                               G_STRUCT_OFFSET(ModestMsgViewClass, attachment_clicked),
 140                               NULL, NULL,
 141                               g_cclosure_marshal_VOID__POINTER,
 142                               G_TYPE_NONE, 1, G_TYPE_INT);
 143
 144         signals[LINK_HOVER_SIGNAL] =
 145                 g_signal_new ("link_hover",
 146                               G_TYPE_FROM_CLASS (gobject_class),
 147                               G_SIGNAL_RUN_FIRST,
 148                               G_STRUCT_OFFSET(ModestMsgViewClass, link_hover),
 149                               NULL, NULL,
 150                               g_cclosure_marshal_VOID__STRING,
 151                               G_TYPE_NONE, 1, G_TYPE_STRING);
 152
 153         signals[RECPT_ACTIVATED_SIGNAL] =
 154                 g_signal_new ("recpt_activated",
 155                               G_TYPE_FROM_CLASS (gobject_class),
 156                               G_SIGNAL_RUN_FIRST,
 157                               G_STRUCT_OFFSET(ModestMsgViewClass, recpt_activated),
 158                               NULL, NULL,
 159                               g_cclosure_marshal_VOID__STRING,
 160                               G_TYPE_NONE, 1, G_TYPE_STRING);
 161 }
 162
 163 static void
 164 modest_msg_view_init (ModestMsgView *obj)
 165 {
 166         ModestMsgViewPrivate *priv;
 167
 168         priv = MODEST_MSG_VIEW_GET_PRIVATE(obj);
 169
 170         priv->msg                     = NULL;
 171
 172         priv->gtkhtml                 = gtk_html_new();
 173         gtk_html_set_editable        (GTK_HTML(priv->gtkhtml), FALSE);
 174         gtk_html_allow_selection     (GTK_HTML(priv->gtkhtml), TRUE);
 175         gtk_html_set_caret_mode      (GTK_HTML(priv->gtkhtml), FALSE);
 176         gtk_html_set_blocking        (GTK_HTML(priv->gtkhtml), FALSE);
 177         gtk_html_set_images_blocking (GTK_HTML(priv->gtkhtml), FALSE);
 178
 179         priv->mail_header_view        = GTK_WIDGET(modest_mail_header_view_new ());
 180         gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
 181
 182         priv->attachments_view        = GTK_WIDGET(modest_attachments_view_new (NULL));
 183         gtk_widget_set_no_show_all (priv->attachments_view, TRUE);
 184
 185         priv->sig1 = g_signal_connect (G_OBJECT(priv->gtkhtml), "link_clicked",
 186                                        G_CALLBACK(on_link_clicked), obj);
 187         priv->sig2 = g_signal_connect (G_OBJECT(priv->gtkhtml), "url_requested",
 188                                        G_CALLBACK(on_url_requested), obj);
 189         priv->sig3 = g_signal_connect (G_OBJECT(priv->gtkhtml), "on_url",
 190                                        G_CALLBACK(on_link_hover), obj);
 191
 192         g_signal_connect (G_OBJECT (priv->mail_header_view), "recpt-activated",
 193                           G_CALLBACK (on_recpt_activated), obj);
 194 }
 195
 196
 197 static void
 198 modest_msg_view_finalize (GObject *obj)
 199 {
 200         ModestMsgViewPrivate *priv;
 201         priv = MODEST_MSG_VIEW_GET_PRIVATE (obj);
 202
 203         if (priv->msg) {
 204                 g_object_unref (G_OBJECT(priv->msg));
 205                 priv->msg = NULL;
 206         }
 207
 208         /* we cannot disconnect sigs, because priv->gtkhtml is
 209          * already dead */
 210
 211         priv->gtkhtml = NULL;
 212         priv->attachments_view = NULL;
 213
 214         G_OBJECT_CLASS(parent_class)->finalize (obj);
 215 }
 216
 217
 218 GtkWidget*
 219 modest_msg_view_new (TnyMsg *msg)
 220 {
 221         GObject *obj;
 222         ModestMsgView* self;
 223         ModestMsgViewPrivate *priv;
 224         GtkWidget *scrolled_window;
 225
 226         obj  = G_OBJECT(g_object_new(MODEST_TYPE_MSG_VIEW, NULL));
 227         self = MODEST_MSG_VIEW(obj);
 228         priv = MODEST_MSG_VIEW_GET_PRIVATE (self);
 229
 230         gtk_box_set_spacing (GTK_BOX (self), 0);
 231         gtk_box_set_homogeneous (GTK_BOX (self), FALSE);
 232
 233         if (priv->mail_header_view)
 234                 gtk_box_pack_start (GTK_BOX(self), priv->mail_header_view, FALSE, FALSE, 0);
 235
 236         if (priv->attachments_view)
 237                 gtk_box_pack_start (GTK_BOX(self), priv->attachments_view, FALSE, FALSE, 0);
 238
 239         if (priv->gtkhtml) {
 240                 scrolled_window = gtk_scrolled_window_new (NULL, NULL);
 241                 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
 242                                                GTK_POLICY_AUTOMATIC,
 243                                                GTK_POLICY_AUTOMATIC);
 244                 gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW(scrolled_window),
 245                                                      GTK_SHADOW_IN);
 246                 gtk_container_add (GTK_CONTAINER (scrolled_window), priv->gtkhtml);
 247                 gtk_box_pack_start (GTK_BOX(self), scrolled_window, TRUE, TRUE, 0);
 248         }
 249
 250         modest_msg_view_set_message (self, msg);
 251
 252         return GTK_WIDGET(self);
 253 }
 254
 255 static void
 256 on_recpt_activated (ModestMailHeaderView *header_view,
 257                     const gchar *address,
 258                     ModestMsgView * view)
 259 {
 260         g_signal_emit (G_OBJECT (view), signals[RECPT_ACTIVATED_SIGNAL], 0, address);
 261 }
 262
 263 static gboolean
 264 on_link_clicked (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view)
 265 {
 266         int index;
 267
 268         g_return_val_if_fail (msg_view, FALSE);
 269
 270         /* is it an attachment? */
 271         if (g_str_has_prefix(uri, ATT_PREFIX)) {
 272
 273                 index = atoi (uri + strlen(ATT_PREFIX));
 274
 275                 if (index == 0) {
 276                         /* index is 1-based, so 0 indicates an error */
 277                         g_printerr ("modest: invalid attachment id: %s\n", uri);
 278                         return FALSE;
 279                 }
 280
 281                 g_signal_emit (G_OBJECT(msg_view), signals[ATTACHMENT_CLICKED_SIGNAL],
 282                                0, index);
 283                 return FALSE;
 284         }
 285
 286         g_signal_emit (G_OBJECT(msg_view), signals[LINK_CLICKED_SIGNAL],
 287                        0, uri);
 288
 289         return FALSE;
 290 }
 291
 292
 293
 294 static gboolean
 295 on_link_hover (GtkWidget *widget, const gchar *uri, ModestMsgView *msg_view)
 296 {
 297         if (uri && g_str_has_prefix (uri, ATT_PREFIX))
 298                 return FALSE;
 299
 300         g_signal_emit (G_OBJECT(msg_view), signals[LINK_HOVER_SIGNAL],
 301                        0, uri);
 302
 303         return FALSE;
 304 }
 305
 306
 307
 308 static TnyMimePart *
 309 find_cid_image (TnyMsg *msg, const gchar *cid)
 310 {
 311         TnyMimePart *part = NULL;
 312         TnyList *parts;
 313         TnyIterator *iter;
 314
 315         g_return_val_if_fail (msg, NULL);
 316         g_return_val_if_fail (cid, NULL);
 317
 318         parts  = TNY_LIST (tny_simple_list_new());
 319
 320         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 321         iter   = tny_list_create_iterator (parts);
 322
 323         while (!tny_iterator_is_done(iter)) {
 324                 const gchar *part_cid;
 325                 part = TNY_MIME_PART(tny_iterator_get_current(iter));
 326                 part_cid = tny_mime_part_get_content_id (part);
 327
 328                 if (part_cid && strcmp (cid, part_cid) == 0)
 329                         break;
 330
 331                 g_object_unref (G_OBJECT(part));
 332
 333                 part = NULL;
 334                 tny_iterator_next (iter);
 335         }
 336
 337         g_object_unref (G_OBJECT(iter));
 338         g_object_unref (G_OBJECT(parts));
 339
 340         return part;
 341 }
 342
 343
 344 static gboolean
 345 on_url_requested (GtkWidget *widget, const gchar *uri,
 346                   GtkHTMLStream *stream, ModestMsgView *msg_view)
 347 {
 348         ModestMsgViewPrivate *priv;
 349         priv = MODEST_MSG_VIEW_GET_PRIVATE (msg_view);
 350
 351         if (g_str_has_prefix (uri, "cid:")) {
 352                 /* +4 ==> skip "cid:" */
 353                 TnyMimePart *part = find_cid_image (priv->msg, uri + 4);
 354                 if (!part) {
 355                         g_printerr ("modest: '%s' not found\n", uri + 4);
 356                         gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
 357                 } else {
 358                         TnyStream *tny_stream =
 359                                 TNY_STREAM(modest_tny_stream_gtkhtml_new(stream));
 360                         tny_mime_part_decode_to_stream ((TnyMimePart*)part,
 361                                                                   tny_stream);
 362                         gtk_html_stream_close (stream, GTK_HTML_STREAM_OK);
 363
 364                         g_object_unref (G_OBJECT(tny_stream));
 365                         g_object_unref (G_OBJECT(part));
 366                 }
 367         }
 368
 369         return TRUE;
 370 }
 371
 372 static gboolean
 373 set_html_message (ModestMsgView *self, TnyMimePart *tny_body, TnyMsg *msg)
 374 {
 375         GtkHTMLStream *gtkhtml_stream;
 376         TnyStream *tny_stream;
 377         ModestMsgViewPrivate *priv;
 378
 379         g_return_val_if_fail (self, FALSE);
 380         g_return_val_if_fail (tny_body, FALSE);
 381
 382         priv = MODEST_MSG_VIEW_GET_PRIVATE(self);
 383
 384         gtkhtml_stream = gtk_html_begin(GTK_HTML(priv->gtkhtml));
 385
 386         tny_stream     = TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream));
 387         tny_stream_reset (tny_stream);
 388
 389         tny_mime_part_decode_to_stream ((TnyMimePart*)tny_body, tny_stream);
 390         g_object_unref (G_OBJECT(tny_stream));
 391
 392         gtk_html_stream_destroy (gtkhtml_stream);
 393
 394         return TRUE;
 395 }
 396
 397
 398 /* FIXME: this is a hack --> we use the tny_text_buffer_stream to
 399  * get the message text, then write to gtkhtml 'by hand' */
 400 static gboolean
 401 set_text_message (ModestMsgView *self, TnyMimePart *tny_body, TnyMsg *msg)
 402 {
 403         GtkTextBuffer *buf;
 404         GtkTextIter begin, end;
 405         TnyStream* txt_stream, *tny_stream;
 406         GtkHTMLStream *gtkhtml_stream;
 407         gchar *txt;
 408         ModestMsgViewPrivate *priv;
 409
 410         g_return_val_if_fail (self, FALSE);
 411         g_return_val_if_fail (tny_body, FALSE);
 412
 413         priv           = MODEST_MSG_VIEW_GET_PRIVATE(self);
 414
 415         buf            = gtk_text_buffer_new (NULL);
 416         txt_stream     = TNY_STREAM(tny_gtk_text_buffer_stream_new (buf));
 417
 418         tny_stream_reset (txt_stream);
 419
 420         gtkhtml_stream = gtk_html_begin(GTK_HTML(priv->gtkhtml));
 421         tny_stream =  TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream));
 422
 423         // FIXME: tinymail
 424         tny_mime_part_decode_to_stream ((TnyMimePart*)tny_body, txt_stream);
 425         tny_stream_reset (txt_stream);
 426
 427         gtk_text_buffer_get_bounds (buf, &begin, &end);
 428         txt = gtk_text_buffer_get_text (buf, &begin, &end, FALSE);
 429         if (txt) {
 430                 gchar *html = modest_text_utils_convert_to_html (txt);
 431                 tny_stream_write (tny_stream, html, strlen(html));
 432                 tny_stream_reset (tny_stream);
 433                 g_free (txt);
 434                 g_free (html);
 435         }
 436
 437         g_object_unref (G_OBJECT(tny_stream));
 438         g_object_unref (G_OBJECT(txt_stream));
 439         g_object_unref (G_OBJECT(buf));
 440
 441         gtk_html_stream_destroy (gtkhtml_stream);
 442
 443         return TRUE;
 444 }
 445
 446
 447 static gboolean
 448 set_empty_message (ModestMsgView *self)
 449 {
 450         ModestMsgViewPrivate *priv;
 451
 452         g_return_val_if_fail (self, FALSE);
 453         priv           = MODEST_MSG_VIEW_GET_PRIVATE(self);
 454
 455         gtk_html_load_from_string (GTK_HTML(priv->gtkhtml),
 456                                    "", 1);
 457
 458         return TRUE;
 459 }
 460
 461
 462 void
 463 modest_msg_view_set_message (ModestMsgView *self, TnyMsg *msg)
 464 {
 465         TnyMimePart *body;
 466         ModestMsgViewPrivate *priv;
 467         TnyHeader *header;
 468
 469         g_return_if_fail (self);
 470
 471         priv = MODEST_MSG_VIEW_GET_PRIVATE(self);
 472         gtk_widget_set_no_show_all (priv->mail_header_view, FALSE);
 473
 474         if (msg != priv->msg) {
 475                 if (priv->msg)
 476                         g_object_unref (G_OBJECT(priv->msg));
 477                 if (msg)
 478                         g_object_ref   (G_OBJECT(msg));
 479                 priv->msg = msg;
 480         }
 481
 482         if (!msg) {
 483                 tny_header_view_clear (TNY_HEADER_VIEW (priv->mail_header_view));
 484                 gtk_widget_hide_all (priv->mail_header_view);
 485                 gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
 486                 set_empty_message (self);
 487                 return;
 488         }
 489
 490         header = tny_msg_get_header (msg);
 491         tny_header_view_set_header (TNY_HEADER_VIEW (priv->mail_header_view), header);
 492         g_object_unref (header);
 493
 494         modest_attachments_view_set_message (MODEST_ATTACHMENTS_VIEW(priv->attachments_view),
 495                                              msg);
 496
 497         body = modest_tny_msg_find_body_part (msg,TRUE);
 498         if (body) {
 499                 if (tny_mime_part_content_type_is (body, "text/html"))
 500                         set_html_message (self, body, msg);
 501                 else
 502                         set_text_message (self, body, msg);
 503         } else
 504                 set_empty_message (self);
 505
 506         gtk_widget_show_all (priv->mail_header_view);
 507         gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
 508 }
 509
 510
 511 TnyMsg*
 512 modest_msg_view_get_message (ModestMsgView *self)
 513 {
 514         g_return_val_if_fail (self, NULL);
 515
 516         return MODEST_MSG_VIEW_GET_PRIVATE(self)->msg;
 517 }