git.maemo.org Git - modest/blob - src/widgets/modest-webkit-mime-part-view.c

   1 /* Copyright (c) 2006, 2007, 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 <config.h>
  31 #include <widgets/modest-webkit-mime-part-view.h>
  32 #include <string.h>
  33 #include <webkit/webkit.h>
  34 #include <tny-stream.h>
  35 #include <tny-mime-part-view.h>
  36 #include "modest-tny-mime-part.h"
  37 #include <modest-stream-text-to-html.h>
  38 #include <modest-text-utils.h>
  39 #include <modest-conf.h>
  40 #include <modest-runtime.h>
  41 #include <widgets/modest-mime-part-view.h>
  42 #include <widgets/modest-zoomable.h>
  43 #include <libgnomevfs/gnome-vfs.h>
  44 #include <gdk/gdkkeysyms.h>
  45 #include <modest-ui-constants.h>
  46 #include <modest-tny-stream-webkit.h>
  47
  48 /* gobject structure methods */
  49 static void    modest_webkit_mime_part_view_class_init (ModestWebkitMimePartViewClass *klass);
  50 static void    tny_mime_part_view_init                  (gpointer g, gpointer iface_data);
  51 static void    modest_mime_part_view_init               (gpointer g, gpointer iface_data);
  52 static void    modest_zoomable_init                     (gpointer g, gpointer iface_data);
  53 static void    modest_isearch_view_init                 (gpointer g, gpointer iface_data);
  54 static void    modest_webkit_mime_part_view_init       (ModestWebkitMimePartView *self);
  55 static void    modest_webkit_mime_part_view_finalize   (GObject *self);
  56 static void    modest_webkit_mime_part_view_dispose    (GObject *self);
  57
  58 /* Webkit signal handlers */
  59 static void on_resource_request_starting (WebKitWebView *webview,
  60                                           WebKitWebFrame *frame,
  61                                           WebKitWebResource *resource,
  62                                           WebKitNetworkRequest *request,
  63                                           WebKitNetworkResponse *response,
  64                                           gpointer userdata);
  65 static void      on_notify_style  (GObject *obj, GParamSpec *spec, gpointer userdata);
  66 static gboolean  update_style     (ModestWebkitMimePartView *self);
  67 /* TnyMimePartView implementation */
  68 static void modest_webkit_mime_part_view_clear (TnyMimePartView *self);
  69 static void modest_webkit_mime_part_view_clear_default (TnyMimePartView *self);
  70 static void modest_webkit_mime_part_view_set_part (TnyMimePartView *self, TnyMimePart *part);
  71 static void modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self, TnyMimePart *part);
  72 static TnyMimePart* modest_webkit_mime_part_view_get_part (TnyMimePartView *self);
  73 static TnyMimePart* modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self);
  74 /* ModestMimePartView implementation */
  75 static gboolean modest_webkit_mime_part_view_is_empty (ModestMimePartView *self);
  76 static gboolean modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self);
  77 static gboolean modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self);
  78 static gboolean modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self);
  79 static void     modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images);
  80 static void     modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images);
  81 static gboolean modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self);
  82 static gboolean modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self);
  83 /* ModestZoomable implementation */
  84 static gdouble modest_webkit_mime_part_view_get_zoom (ModestZoomable *self);
  85 static void modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value);
  86 static gboolean modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self);
  87 static gboolean modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self);
  88 static gdouble modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self);
  89 static void modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value);
  90 static gboolean modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self);
  91 static gboolean modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self);
  92 /* ModestISearchView implementation */
  93 static gboolean modest_webkit_mime_part_view_search                    (ModestISearchView *self, const gchar *string);
  94 static gboolean modest_webkit_mime_part_view_search_next               (ModestISearchView *self);
  95 static gboolean modest_webkit_mime_part_view_get_selection_area        (ModestISearchView *self, gint *x, gint *y,
  96                                                                          gint *width, gint *height);
  97 static gboolean modest_webkit_mime_part_view_search_default            (ModestISearchView *self, const gchar *string);
  98 static gboolean modest_webkit_mime_part_view_search_next_default       (ModestISearchView *self);
  99 static gboolean modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 100                                                                           gint *width, gint *height);
 101
 102
 103 /* internal api */
 104 static TnyMimePart  *get_part   (ModestWebkitMimePartView *self);
 105 static void          set_html_part   (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding);
 106 static void          set_text_part   (ModestWebkitMimePartView *self, TnyMimePart *part);
 107 static void          set_empty_part  (ModestWebkitMimePartView *self);
 108 static void          set_part   (ModestWebkitMimePartView *self, TnyMimePart *part);
 109 static gboolean      is_empty   (ModestWebkitMimePartView *self);
 110 static gboolean      get_view_images   (ModestWebkitMimePartView *self);
 111 static void          set_view_images   (ModestWebkitMimePartView *self, gboolean view_images);
 112 static gboolean      has_external_images   (ModestWebkitMimePartView *self);
 113 static void          set_zoom   (ModestWebkitMimePartView *self, gdouble zoom);
 114 static gdouble       get_zoom   (ModestWebkitMimePartView *self);
 115 static gboolean      search             (ModestWebkitMimePartView *self, const gchar *string);
 116 static gboolean      search_next        (ModestWebkitMimePartView *self);
 117 static gboolean      get_selection_area (ModestWebkitMimePartView *self, gint *x, gint *y,
 118                                          gint *width, gint *height);
 119
 120 typedef struct _ModestWebkitMimePartViewPrivate ModestWebkitMimePartViewPrivate;
 121 struct _ModestWebkitMimePartViewPrivate {
 122         TnyMimePart *part;
 123         gdouble current_zoom;
 124         gboolean view_images;
 125         gboolean has_external_images;
 126         GSList *sighandlers;
 127 };
 128
 129 #define MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 130                                                                                        MODEST_TYPE_WEBKIT_MIME_PART_VIEW, \
 131                                                                                        ModestWebkitMimePartViewPrivate))
 132
 133 enum {
 134         STOP_STREAMS_SIGNAL,
 135         LIMIT_ERROR_SIGNAL,
 136         LAST_SIGNAL
 137 };
 138
 139 static WebKitWebViewClass *parent_class = NULL;
 140
 141 static guint signals[LAST_SIGNAL] = {0};
 142
 143 GtkWidget *
 144 modest_webkit_mime_part_view_new ()
 145 {
 146         return g_object_new (MODEST_TYPE_WEBKIT_MIME_PART_VIEW, NULL);
 147 }
 148
 149 /* GOBJECT IMPLEMENTATION */
 150 GType
 151 modest_webkit_mime_part_view_get_type (void)
 152 {
 153         static GType my_type = 0;
 154         if (!my_type) {
 155                 static const GTypeInfo my_info = {
 156                         sizeof(ModestWebkitMimePartViewClass),
 157                         NULL,           /* base init */
 158                         NULL,           /* base finalize */
 159                         (GClassInitFunc) modest_webkit_mime_part_view_class_init,
 160                         NULL,           /* class finalize */
 161                         NULL,           /* class data */
 162                         sizeof(ModestWebkitMimePartView),
 163                         1,              /* n_preallocs */
 164                         (GInstanceInitFunc) modest_webkit_mime_part_view_init,
 165                         NULL
 166                 };
 167
 168                 static const GInterfaceInfo tny_mime_part_view_info =
 169                 {
 170                   (GInterfaceInitFunc) tny_mime_part_view_init, /* interface_init */
 171                   NULL,         /* interface_finalize */
 172                   NULL          /* interface_data */
 173                 };
 174
 175                 static const GInterfaceInfo modest_mime_part_view_info =
 176                 {
 177                   (GInterfaceInitFunc) modest_mime_part_view_init, /* interface_init */
 178                   NULL,         /* interface_finalize */
 179                   NULL          /* interface_data */
 180                 };
 181
 182                 static const GInterfaceInfo modest_zoomable_info =
 183                 {
 184                   (GInterfaceInitFunc) modest_zoomable_init, /* interface_init */
 185                   NULL,         /* interface_finalize */
 186                   NULL          /* interface_data */
 187                 };
 188
 189                 static const GInterfaceInfo modest_isearch_view_info =
 190                 {
 191                   (GInterfaceInitFunc) modest_isearch_view_init, /* interface_init */
 192                   NULL,         /* interface_finalize */
 193                   NULL          /* interface_data */
 194                 };
 195
 196                 my_type = g_type_register_static (WEBKIT_TYPE_WEB_VIEW,
 197                                                   "ModestWebkitMimePartView",
 198                                                   &my_info, 0);
 199
 200                 g_type_add_interface_static (my_type, TNY_TYPE_MIME_PART_VIEW,
 201                         &tny_mime_part_view_info);
 202
 203                 g_type_add_interface_static (my_type, MODEST_TYPE_MIME_PART_VIEW,
 204                         &modest_mime_part_view_info);
 205
 206                 g_type_add_interface_static (my_type, MODEST_TYPE_ZOOMABLE,
 207                         &modest_zoomable_info);
 208                 g_type_add_interface_static (my_type, MODEST_TYPE_ISEARCH_VIEW,
 209                         &modest_isearch_view_info);
 210         }
 211         return my_type;
 212 }
 213
 214 static void
 215 modest_webkit_mime_part_view_class_init (ModestWebkitMimePartViewClass *klass)
 216 {
 217         GObjectClass *gobject_class;
 218         GtkBindingSet *binding_set;
 219
 220         gobject_class = (GObjectClass*) klass;
 221
 222         parent_class            = g_type_class_peek_parent (klass);
 223         gobject_class->dispose = modest_webkit_mime_part_view_dispose;
 224         gobject_class->finalize = modest_webkit_mime_part_view_finalize;
 225
 226         klass->get_part_func = modest_webkit_mime_part_view_get_part_default;
 227         klass->set_part_func = modest_webkit_mime_part_view_set_part_default;
 228         klass->clear_func = modest_webkit_mime_part_view_clear_default;
 229         klass->is_empty_func = modest_webkit_mime_part_view_is_empty_default;
 230         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images_default;
 231         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images_default;
 232         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images_default;
 233         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom_default;
 234         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom_default;
 235         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus_default;
 236         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus_default;
 237         klass->search_func = modest_webkit_mime_part_view_search_default;
 238         klass->search_next_func = modest_webkit_mime_part_view_search_next_default;
 239         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area_default;
 240
 241         binding_set = gtk_binding_set_by_class (klass);
 242         gtk_binding_entry_skip (binding_set, GDK_Down, 0);
 243         gtk_binding_entry_skip (binding_set, GDK_Up, 0);
 244         gtk_binding_entry_skip (binding_set, GDK_KP_Up, 0);
 245         gtk_binding_entry_skip (binding_set, GDK_KP_Down, 0);
 246         gtk_binding_entry_skip (binding_set, GDK_Page_Down, 0);
 247         gtk_binding_entry_skip (binding_set, GDK_Page_Up, 0);
 248         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Up, 0);
 249         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Down, 0);
 250         gtk_binding_entry_skip (binding_set, GDK_Home, 0);
 251         gtk_binding_entry_skip (binding_set, GDK_End, 0);
 252         gtk_binding_entry_skip (binding_set, GDK_KP_Home, 0);
 253         gtk_binding_entry_skip (binding_set, GDK_KP_End, 0);
 254
 255         g_type_class_add_private (gobject_class, sizeof(ModestWebkitMimePartViewPrivate));
 256
 257         signals[STOP_STREAMS_SIGNAL] =
 258                 g_signal_new ("stop-streams",
 259                               G_TYPE_FROM_CLASS (gobject_class),
 260                               G_SIGNAL_RUN_FIRST,
 261                               G_STRUCT_OFFSET (ModestWebkitMimePartViewClass,stop_streams),
 262                               NULL, NULL,
 263                               g_cclosure_marshal_VOID__VOID,
 264                               G_TYPE_NONE, 0);
 265
 266         signals[LIMIT_ERROR_SIGNAL] =
 267                 g_signal_new ("limit-error",
 268                               G_TYPE_FROM_CLASS (gobject_class),
 269                               G_SIGNAL_RUN_FIRST,
 270                               G_STRUCT_OFFSET (ModestWebkitMimePartViewClass,limit_error),
 271                               NULL, NULL,
 272                               g_cclosure_marshal_VOID__VOID,
 273                               G_TYPE_NONE, 0);
 274
 275 }
 276
 277 static void
 278 modest_webkit_mime_part_view_init (ModestWebkitMimePartView *self)
 279 {
 280         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 281         GdkColor base;
 282         GdkColor text;
 283
 284         gdk_color_parse ("#fff", &base);
 285         gdk_color_parse ("#000", &text);
 286         gtk_widget_modify_base (GTK_WIDGET (self), GTK_STATE_NORMAL, &base);
 287         gtk_widget_modify_text (GTK_WIDGET (self), GTK_STATE_NORMAL, &text);
 288
 289         priv->sighandlers = NULL;
 290
 291         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 292                                                        G_OBJECT(self), "notify::style",
 293                                                        G_CALLBACK (on_notify_style), (gpointer) self);
 294         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 295                                                        G_OBJECT (self), "resource-request-starting",
 296                                                        G_CALLBACK (on_resource_request_starting), (gpointer) self);
 297
 298         priv->part = NULL;
 299         priv->current_zoom = 1.0;
 300         priv->view_images = FALSE;
 301         priv->has_external_images = FALSE;
 302 }
 303
 304 static void
 305 modest_webkit_mime_part_view_finalize (GObject *obj)
 306 {
 307         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 308
 309         modest_signal_mgr_disconnect_all_and_destroy (priv->sighandlers);
 310         priv->sighandlers = NULL;
 311
 312         G_OBJECT_CLASS (parent_class)->finalize (obj);
 313 }
 314
 315 static void
 316 modest_webkit_mime_part_view_dispose (GObject *obj)
 317 {
 318         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 319
 320         g_signal_emit (G_OBJECT (obj), signals[STOP_STREAMS_SIGNAL], 0);
 321
 322         if (priv->part) {
 323                 g_object_unref (priv->part);
 324                 priv->part = NULL;
 325         }
 326
 327         G_OBJECT_CLASS (parent_class)->dispose (obj);
 328 }
 329
 330 /* WEBKIT SIGNALS HANDLERS */
 331
 332 static void
 333 on_resource_request_starting (WebKitWebView *webview,
 334                               WebKitWebFrame *frame,
 335                               WebKitWebResource *resource,
 336                               WebKitNetworkRequest *request,
 337                               WebKitNetworkResponse *response,
 338                               gpointer userdata)
 339 {
 340         ModestWebkitMimePartView *self = (ModestWebkitMimePartView *) userdata;
 341         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 342
 343         if (g_str_has_prefix (webkit_network_request_get_uri (request), "http:")) {
 344                 ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 345
 346                 if (!priv->view_images)
 347                         priv->has_external_images = TRUE;
 348         }
 349
 350         webkit_network_request_set_uri (request, "about:blank");
 351 }
 352
 353 static void
 354 on_notify_style (GObject *obj, GParamSpec *spec, gpointer userdata)
 355 {
 356         if (strcmp ("style", spec->name) == 0) {
 357                 g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc) update_style,
 358                                  g_object_ref (obj), g_object_unref);
 359                 gtk_widget_queue_draw (GTK_WIDGET (obj));
 360         }
 361 }
 362
 363 gboolean
 364 same_color (GdkColor *a, GdkColor *b)
 365 {
 366         return ((a->red == b->red) &&
 367                 (a->green == b->green) &&
 368                 (a->blue == b->blue));
 369 }
 370
 371 static gboolean
 372 update_style (ModestWebkitMimePartView *self)
 373 {
 374         GdkColor base;
 375         GdkColor text;
 376         GtkRcStyle *rc_style;
 377
 378         gdk_threads_enter ();
 379
 380         if (GTK_WIDGET_VISIBLE (self)) {
 381                 rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (self));
 382
 383                 gdk_color_parse ("#fff", &base);
 384                 gdk_color_parse ("#000", &text);
 385
 386                 if (!same_color (&(rc_style->base[GTK_STATE_NORMAL]), &base) &&
 387                     !same_color (&(rc_style->text[GTK_STATE_NORMAL]), &text)) {
 388
 389                         rc_style->base[GTK_STATE_NORMAL] = base;
 390                         rc_style->text[GTK_STATE_NORMAL] = text;
 391                         gtk_widget_modify_style (GTK_WIDGET (self), rc_style);
 392                 }
 393         }
 394
 395         gdk_threads_leave ();
 396
 397         return FALSE;
 398 }
 399
 400
 401 /* INTERNAL API */
 402 static void
 403 decode_to_stream_cb (TnyMimePart *self,
 404                      gboolean cancelled,
 405                      TnyStream *stream,
 406                      GError *err,
 407                      gpointer user_data)
 408 {
 409         ModestWebkitMimePartView *view = (ModestWebkitMimePartView *) user_data;
 410
 411         if (MODEST_IS_STREAM_TEXT_TO_HTML (stream)) {
 412                 if (tny_stream_write (stream, "\n", 1) == -1) {
 413                         g_warning ("failed to write CR in %s", __FUNCTION__);
 414                 }
 415                 if (modest_stream_text_to_html_limit_reached (MODEST_STREAM_TEXT_TO_HTML (stream))) {
 416                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 417                 }
 418                 tny_stream_reset (stream);
 419         } else {
 420                 if (modest_tny_stream_webkit_limit_reached (MODEST_TNY_STREAM_WEBKIT (stream))) {
 421                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 422                 }
 423         }
 424         tny_stream_close (stream);
 425 }
 426
 427 static void
 428 set_html_part (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding)
 429 {
 430         TnyStream *tny_stream;
 431
 432         g_return_if_fail (self);
 433         g_return_if_fail (part);
 434
 435         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 436
 437         tny_stream     = TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", encoding));
 438         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 439         tny_stream_reset (tny_stream);
 440
 441         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 442                                               tny_stream, decode_to_stream_cb,
 443                                               NULL, self);
 444         g_object_unref (tny_stream);
 445 }
 446
 447 static void
 448 set_text_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 449 {
 450         TnyStream* text_to_html_stream, *tny_stream;
 451
 452         g_return_if_fail (self);
 453         g_return_if_fail (part);
 454
 455         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 456
 457         tny_stream =  TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", "utf-8"));
 458         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 459         text_to_html_stream = TNY_STREAM (modest_stream_text_to_html_new (tny_stream));
 460         modest_stream_text_to_html_set_linkify_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 461                                                       64*1024);
 462         modest_stream_text_to_html_set_full_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 463                                                    128*1024);
 464         modest_stream_text_to_html_set_line_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 465                                                    1024);
 466
 467         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 468                                               text_to_html_stream, decode_to_stream_cb,
 469                                               NULL, self);
 470
 471         g_object_unref (G_OBJECT(text_to_html_stream));
 472         g_object_unref (G_OBJECT(tny_stream));
 473 }
 474
 475 static void
 476 set_empty_part (ModestWebkitMimePartView *self)
 477 {
 478         g_return_if_fail (self);
 479
 480         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 481         webkit_web_view_load_string (WEBKIT_WEB_VIEW (self), "", "text/plain", "utf-8", NULL);
 482 }
 483
 484 static void
 485 set_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 486 {
 487         ModestWebkitMimePartViewPrivate *priv;
 488         gchar *header_content_type, *header_content_type_lower;
 489         const gchar *tmp;
 490         gchar *charset = NULL;
 491
 492         g_return_if_fail (self);
 493
 494         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self);
 495         priv->has_external_images = FALSE;
 496
 497         if (part != priv->part) {
 498                 if (priv->part)
 499                         g_object_unref (G_OBJECT(priv->part));
 500                 if (part)
 501                         g_object_ref   (G_OBJECT(part));
 502                 priv->part = part;
 503         }
 504
 505         if (!part) {
 506                 set_empty_part (self);
 507                 return;
 508         }
 509
 510         header_content_type = modest_tny_mime_part_get_header_value (part, "Content-Type");
 511         if (header_content_type) {
 512                 header_content_type = g_strstrip (header_content_type);
 513                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 514         } else {
 515                 header_content_type_lower = NULL;
 516         }
 517
 518         if (header_content_type_lower) {
 519                 tmp = strstr (header_content_type_lower, "charset=");
 520                 if (tmp) {
 521                         const gchar *tmp2;
 522                         tmp = tmp + strlen ("charset=");
 523
 524                         tmp2 = strstr (tmp, ";");
 525                         if (tmp2) {
 526                                 charset = g_strndup (tmp, tmp2-tmp);
 527                         } else {
 528                                 charset = g_strdup (tmp);
 529                         }
 530                 }
 531         }
 532
 533         if (tny_mime_part_content_type_is (part, "text/html")) {
 534                 set_html_part (self, part, charset);
 535         } else {
 536                 if (tny_mime_part_content_type_is (part, "message/rfc822")) {
 537                         if (header_content_type) {
 538                                 if (g_str_has_prefix (header_content_type_lower, "text/html"))
 539                                         set_html_part (self, part, charset);
 540                                 else
 541                                         set_text_part (self, part);
 542
 543                         } else {
 544                                 set_text_part (self, part);
 545                         }
 546                 } else {
 547                         set_text_part (self, part);
 548                 }
 549         }
 550         g_free (header_content_type_lower);
 551         g_free (header_content_type);
 552
 553 }
 554
 555 static TnyMimePart*
 556 get_part (ModestWebkitMimePartView *self)
 557 {
 558         TnyMimePart *part;
 559
 560         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), NULL);
 561
 562         part = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self)->part;
 563
 564         if (part)
 565                 g_object_ref (part);
 566
 567         return part;
 568 }
 569
 570 static gboolean
 571 is_empty   (ModestWebkitMimePartView *self)
 572 {
 573         return FALSE;
 574 }
 575
 576 static gboolean
 577 get_view_images   (ModestWebkitMimePartView *self)
 578 {
 579         ModestWebkitMimePartViewPrivate *priv;
 580
 581         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 582
 583         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 584         return priv->view_images;
 585 }
 586
 587 static void
 588 set_view_images   (ModestWebkitMimePartView *self, gboolean view_images)
 589 {
 590         ModestWebkitMimePartViewPrivate *priv;
 591
 592         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 593
 594         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 595         priv->view_images = view_images;
 596 }
 597
 598 static gboolean
 599 has_external_images   (ModestWebkitMimePartView *self)
 600 {
 601         ModestWebkitMimePartViewPrivate *priv;
 602
 603         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 604
 605         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 606         return priv->has_external_images;
 607 }
 608
 609 static void
 610 set_zoom (ModestWebkitMimePartView *self, gdouble zoom)
 611 {
 612         ModestWebkitMimePartViewPrivate *priv;
 613
 614         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 615
 616         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 617         priv->current_zoom = zoom;
 618
 619         gtk_widget_queue_resize (GTK_WIDGET (self));
 620 }
 621
 622 static gdouble
 623 get_zoom (ModestWebkitMimePartView *self)
 624 {
 625         ModestWebkitMimePartViewPrivate *priv;
 626
 627         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), 1.0);
 628
 629         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 630
 631         return priv->current_zoom;
 632 }
 633
 634 static gboolean
 635 search (ModestWebkitMimePartView *self,
 636         const gchar *string)
 637 {
 638         return FALSE;
 639 }
 640
 641 static gboolean
 642 search_next (ModestWebkitMimePartView *self)
 643 {
 644         return FALSE;
 645 }
 646
 647 static gboolean
 648 get_selection_area (ModestWebkitMimePartView *self,
 649                     gint *x, gint *y,
 650                     gint *width, gint *height)
 651 {
 652         return FALSE;
 653 }
 654
 655
 656 /* TNY MIME PART IMPLEMENTATION */
 657
 658 static void
 659 tny_mime_part_view_init (gpointer g, gpointer iface_data)
 660 {
 661         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
 662
 663         klass->get_part = modest_webkit_mime_part_view_get_part;
 664         klass->set_part = modest_webkit_mime_part_view_set_part;
 665         klass->clear = modest_webkit_mime_part_view_clear;
 666
 667         return;
 668 }
 669
 670 static TnyMimePart*
 671 modest_webkit_mime_part_view_get_part (TnyMimePartView *self)
 672 {
 673         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_part_func (self);
 674 }
 675
 676
 677 static TnyMimePart*
 678 modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self)
 679 {
 680         return TNY_MIME_PART (get_part (MODEST_WEBKIT_MIME_PART_VIEW (self)));
 681 }
 682
 683 static void
 684 modest_webkit_mime_part_view_set_part (TnyMimePartView *self,
 685                                         TnyMimePart *part)
 686 {
 687         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_part_func (self, part);
 688 }
 689
 690 static void
 691 modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self,
 692                                                 TnyMimePart *part)
 693 {
 694         g_return_if_fail ((part == NULL) || TNY_IS_MIME_PART (part));
 695
 696         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), part);
 697 }
 698
 699 static void
 700 modest_webkit_mime_part_view_clear (TnyMimePartView *self)
 701 {
 702         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->clear_func (self);
 703 }
 704
 705 static void
 706 modest_webkit_mime_part_view_clear_default (TnyMimePartView *self)
 707 {
 708         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), NULL);
 709 }
 710
 711 /* MODEST MIME PART VIEW IMPLEMENTATION */
 712
 713 static void
 714 modest_mime_part_view_init (gpointer g, gpointer iface_data)
 715 {
 716         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
 717
 718         klass->is_empty_func = modest_webkit_mime_part_view_is_empty;
 719         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images;
 720         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images;
 721         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images;
 722
 723         return;
 724 }
 725
 726 static gboolean
 727 modest_webkit_mime_part_view_is_empty (ModestMimePartView *self)
 728 {
 729         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->is_empty_func (self);
 730 }
 731
 732 static gboolean
 733 modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self)
 734 {
 735         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_view_images_func (self);
 736 }
 737
 738 static void
 739 modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images)
 740 {
 741         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_view_images_func (self, view_images);
 742 }
 743
 744 static gboolean
 745 modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self)
 746 {
 747         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->has_external_images_func (self);
 748 }
 749
 750 static gboolean
 751 modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self)
 752 {
 753         return is_empty (MODEST_WEBKIT_MIME_PART_VIEW (self));
 754 }
 755
 756 static gboolean
 757 modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self)
 758 {
 759         return get_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 760 }
 761
 762 static void
 763 modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images)
 764 {
 765         set_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self), view_images);
 766 }
 767
 768 static gboolean
 769 modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self)
 770 {
 771         return has_external_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 772 }
 773
 774
 775 /* MODEST ZOOMABLE IMPLEMENTATION */
 776 static void
 777 modest_zoomable_init (gpointer g, gpointer iface_data)
 778 {
 779         ModestZoomableIface *klass = (ModestZoomableIface *)g;
 780
 781         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom;
 782         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom;
 783         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus;
 784         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus;
 785
 786         return;
 787 }
 788
 789 static gdouble
 790 modest_webkit_mime_part_view_get_zoom (ModestZoomable *self)
 791 {
 792         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_zoom_func (self);
 793 }
 794
 795 static gdouble
 796 modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self)
 797 {
 798         return get_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self));
 799 }
 800
 801 static void
 802 modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value)
 803 {
 804         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
 805 }
 806
 807 static void
 808 modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value)
 809 {
 810         set_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self), value);
 811 }
 812
 813 static gboolean
 814 modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self)
 815 {
 816         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_minus_func (self);
 817 }
 818
 819 static gboolean
 820 modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self)
 821 {
 822         /* operation not supported in ModestWebkitMimePartView */
 823         return FALSE;
 824 }
 825
 826 static gboolean
 827 modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self)
 828 {
 829         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_plus_func (self);
 830 }
 831
 832 static gboolean
 833 modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self)
 834 {
 835         /* operation not supported in ModestWebkitMimePartView */
 836         return FALSE;
 837 }
 838
 839 /* ISEARCH VIEW IMPLEMENTATION */
 840 static void
 841 modest_isearch_view_init (gpointer g, gpointer iface_data)
 842 {
 843         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
 844
 845         klass->search_func = modest_webkit_mime_part_view_search;
 846         klass->search_next_func = modest_webkit_mime_part_view_search_next;
 847         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area;
 848
 849         return;
 850 }
 851
 852 static gboolean
 853 modest_webkit_mime_part_view_search (ModestISearchView *self, const gchar *string)
 854 {
 855         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_func (self, string);
 856 }
 857
 858 static gboolean
 859 modest_webkit_mime_part_view_search_default (ModestISearchView *self, const gchar *string)
 860 {
 861         return search (MODEST_WEBKIT_MIME_PART_VIEW (self), string);
 862 }
 863
 864 static gboolean
 865 modest_webkit_mime_part_view_search_next(ModestISearchView *self)
 866 {
 867         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_next_func (self);
 868 }
 869
 870 static gboolean
 871 modest_webkit_mime_part_view_search_next_default (ModestISearchView *self)
 872 {
 873         return search_next (MODEST_WEBKIT_MIME_PART_VIEW (self));
 874 }
 875
 876 static gboolean
 877 modest_webkit_mime_part_view_get_selection_area (ModestISearchView *self, gint *x, gint *y,
 878                                                   gint *width, gint *height)
 879 {
 880         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_selection_area_func (self, x, y, width, height);
 881 }
 882
 883 static gboolean
 884 modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 885                                                           gint *width, gint *height)
 886 {
 887         return get_selection_area (MODEST_WEBKIT_MIME_PART_VIEW (self), x, y, width, height);
 888 }