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         WebKitWebSettings *settings;
 284
 285         gdk_color_parse ("#fff", &base);
 286         gdk_color_parse ("#000", &text);
 287         gtk_widget_modify_base (GTK_WIDGET (self), GTK_STATE_NORMAL, &base);
 288         gtk_widget_modify_text (GTK_WIDGET (self), GTK_STATE_NORMAL, &text);
 289
 290         priv->sighandlers = NULL;
 291
 292         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 293                                                        G_OBJECT(self), "notify::style",
 294                                                        G_CALLBACK (on_notify_style), (gpointer) self);
 295         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 296                                                        G_OBJECT (self), "resource-request-starting",
 297                                                        G_CALLBACK (on_resource_request_starting), (gpointer) self);
 298
 299         priv->part = NULL;
 300         priv->current_zoom = 1.0;
 301         priv->view_images = FALSE;
 302         priv->has_external_images = FALSE;
 303
 304         settings = webkit_web_settings_new ();
 305         g_object_set (G_OBJECT (settings),
 306                       "auto-load-images", FALSE,
 307                       "enable-html5-database", FALSE,
 308                       "enable-html5-local-storage", FALSE,
 309                       "enable-offline-web-application-cache", FALSE,
 310                       "enable-plugins", FALSE,
 311                       "enable-private-browsing", TRUE,
 312                       "enable-scripts", FALSE,
 313                       NULL);
 314         webkit_web_view_set_settings (WEBKIT_WEB_VIEW (self), settings);
 315         g_object_unref (settings);
 316         g_object_set (G_OBJECT (self),
 317                       "editable", FALSE,
 318                       NULL);
 319 }
 320
 321 static void
 322 modest_webkit_mime_part_view_finalize (GObject *obj)
 323 {
 324         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 325
 326         modest_signal_mgr_disconnect_all_and_destroy (priv->sighandlers);
 327         priv->sighandlers = NULL;
 328
 329         G_OBJECT_CLASS (parent_class)->finalize (obj);
 330 }
 331
 332 static void
 333 modest_webkit_mime_part_view_dispose (GObject *obj)
 334 {
 335         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 336
 337         g_signal_emit (G_OBJECT (obj), signals[STOP_STREAMS_SIGNAL], 0);
 338
 339         if (priv->part) {
 340                 g_object_unref (priv->part);
 341                 priv->part = NULL;
 342         }
 343
 344         G_OBJECT_CLASS (parent_class)->dispose (obj);
 345 }
 346
 347 /* WEBKIT SIGNALS HANDLERS */
 348
 349 static void
 350 on_resource_request_starting (WebKitWebView *webview,
 351                               WebKitWebFrame *frame,
 352                               WebKitWebResource *resource,
 353                               WebKitNetworkRequest *request,
 354                               WebKitNetworkResponse *response,
 355                               gpointer userdata)
 356 {
 357         ModestWebkitMimePartView *self = (ModestWebkitMimePartView *) userdata;
 358         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 359
 360         if (g_str_has_prefix (webkit_network_request_get_uri (request), "http:")) {
 361                 ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 362
 363                 if (!priv->view_images)
 364                         priv->has_external_images = TRUE;
 365         }
 366
 367         webkit_network_request_set_uri (request, "about:blank");
 368 }
 369
 370 static void
 371 on_notify_style (GObject *obj, GParamSpec *spec, gpointer userdata)
 372 {
 373         if (strcmp ("style", spec->name) == 0) {
 374                 g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc) update_style,
 375                                  g_object_ref (obj), g_object_unref);
 376                 gtk_widget_queue_draw (GTK_WIDGET (obj));
 377         }
 378 }
 379
 380 gboolean
 381 same_color (GdkColor *a, GdkColor *b)
 382 {
 383         return ((a->red == b->red) &&
 384                 (a->green == b->green) &&
 385                 (a->blue == b->blue));
 386 }
 387
 388 static gboolean
 389 update_style (ModestWebkitMimePartView *self)
 390 {
 391         GdkColor base;
 392         GdkColor text;
 393         GtkRcStyle *rc_style;
 394
 395         gdk_threads_enter ();
 396
 397         if (GTK_WIDGET_VISIBLE (self)) {
 398                 rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (self));
 399
 400                 gdk_color_parse ("#fff", &base);
 401                 gdk_color_parse ("#000", &text);
 402
 403                 if (!same_color (&(rc_style->base[GTK_STATE_NORMAL]), &base) &&
 404                     !same_color (&(rc_style->text[GTK_STATE_NORMAL]), &text)) {
 405
 406                         rc_style->base[GTK_STATE_NORMAL] = base;
 407                         rc_style->text[GTK_STATE_NORMAL] = text;
 408                         gtk_widget_modify_style (GTK_WIDGET (self), rc_style);
 409                 }
 410         }
 411
 412         gdk_threads_leave ();
 413
 414         return FALSE;
 415 }
 416
 417
 418 /* INTERNAL API */
 419 static void
 420 decode_to_stream_cb (TnyMimePart *self,
 421                      gboolean cancelled,
 422                      TnyStream *stream,
 423                      GError *err,
 424                      gpointer user_data)
 425 {
 426         ModestWebkitMimePartView *view = (ModestWebkitMimePartView *) user_data;
 427
 428         if (MODEST_IS_STREAM_TEXT_TO_HTML (stream)) {
 429                 if (tny_stream_write (stream, "\n", 1) == -1) {
 430                         g_warning ("failed to write CR in %s", __FUNCTION__);
 431                 }
 432                 if (modest_stream_text_to_html_limit_reached (MODEST_STREAM_TEXT_TO_HTML (stream))) {
 433                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 434                 }
 435                 tny_stream_reset (stream);
 436         } else {
 437                 if (modest_tny_stream_webkit_limit_reached (MODEST_TNY_STREAM_WEBKIT (stream))) {
 438                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 439                 }
 440         }
 441         tny_stream_close (stream);
 442 }
 443
 444 static void
 445 set_html_part (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding)
 446 {
 447         TnyStream *tny_stream;
 448
 449         g_return_if_fail (self);
 450         g_return_if_fail (part);
 451
 452         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 453
 454         tny_stream     = TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", encoding));
 455         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 456         tny_stream_reset (tny_stream);
 457
 458         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 459                                               tny_stream, decode_to_stream_cb,
 460                                               NULL, self);
 461         g_object_unref (tny_stream);
 462 }
 463
 464 static void
 465 set_text_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 466 {
 467         TnyStream* text_to_html_stream, *tny_stream;
 468
 469         g_return_if_fail (self);
 470         g_return_if_fail (part);
 471
 472         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 473
 474         tny_stream =  TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", "utf-8"));
 475         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 476         text_to_html_stream = TNY_STREAM (modest_stream_text_to_html_new (tny_stream));
 477         modest_stream_text_to_html_set_linkify_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 478                                                       64*1024);
 479         modest_stream_text_to_html_set_full_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 480                                                    128*1024);
 481         modest_stream_text_to_html_set_line_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 482                                                    1024);
 483
 484         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 485                                               text_to_html_stream, decode_to_stream_cb,
 486                                               NULL, self);
 487
 488         g_object_unref (G_OBJECT(text_to_html_stream));
 489         g_object_unref (G_OBJECT(tny_stream));
 490 }
 491
 492 static void
 493 set_empty_part (ModestWebkitMimePartView *self)
 494 {
 495         g_return_if_fail (self);
 496
 497         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 498         webkit_web_view_load_string (WEBKIT_WEB_VIEW (self), "", "text/plain", "utf-8", NULL);
 499 }
 500
 501 static void
 502 set_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 503 {
 504         ModestWebkitMimePartViewPrivate *priv;
 505         gchar *header_content_type, *header_content_type_lower;
 506         const gchar *tmp;
 507         gchar *charset = NULL;
 508
 509         g_return_if_fail (self);
 510
 511         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self);
 512         priv->has_external_images = FALSE;
 513
 514         if (part != priv->part) {
 515                 if (priv->part)
 516                         g_object_unref (G_OBJECT(priv->part));
 517                 if (part)
 518                         g_object_ref   (G_OBJECT(part));
 519                 priv->part = part;
 520         }
 521
 522         if (!part) {
 523                 set_empty_part (self);
 524                 return;
 525         }
 526
 527         header_content_type = modest_tny_mime_part_get_header_value (part, "Content-Type");
 528         if (header_content_type) {
 529                 header_content_type = g_strstrip (header_content_type);
 530                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 531         } else {
 532                 header_content_type_lower = NULL;
 533         }
 534
 535         if (header_content_type_lower) {
 536                 tmp = strstr (header_content_type_lower, "charset=");
 537                 if (tmp) {
 538                         const gchar *tmp2;
 539                         tmp = tmp + strlen ("charset=");
 540
 541                         tmp2 = strstr (tmp, ";");
 542                         if (tmp2) {
 543                                 charset = g_strndup (tmp, tmp2-tmp);
 544                         } else {
 545                                 charset = g_strdup (tmp);
 546                         }
 547                 }
 548         }
 549
 550         if (tny_mime_part_content_type_is (part, "text/html")) {
 551                 set_html_part (self, part, charset);
 552         } else {
 553                 if (tny_mime_part_content_type_is (part, "message/rfc822")) {
 554                         if (header_content_type) {
 555                                 if (g_str_has_prefix (header_content_type_lower, "text/html"))
 556                                         set_html_part (self, part, charset);
 557                                 else
 558                                         set_text_part (self, part);
 559
 560                         } else {
 561                                 set_text_part (self, part);
 562                         }
 563                 } else {
 564                         set_text_part (self, part);
 565                 }
 566         }
 567         g_free (header_content_type_lower);
 568         g_free (header_content_type);
 569
 570 }
 571
 572 static TnyMimePart*
 573 get_part (ModestWebkitMimePartView *self)
 574 {
 575         TnyMimePart *part;
 576
 577         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), NULL);
 578
 579         part = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self)->part;
 580
 581         if (part)
 582                 g_object_ref (part);
 583
 584         return part;
 585 }
 586
 587 static gboolean
 588 is_empty   (ModestWebkitMimePartView *self)
 589 {
 590         return FALSE;
 591 }
 592
 593 static gboolean
 594 get_view_images   (ModestWebkitMimePartView *self)
 595 {
 596         ModestWebkitMimePartViewPrivate *priv;
 597
 598         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 599
 600         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 601         return priv->view_images;
 602 }
 603
 604 static void
 605 set_view_images   (ModestWebkitMimePartView *self, gboolean view_images)
 606 {
 607         ModestWebkitMimePartViewPrivate *priv;
 608
 609         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 610
 611         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 612         priv->view_images = view_images;
 613 }
 614
 615 static gboolean
 616 has_external_images   (ModestWebkitMimePartView *self)
 617 {
 618         ModestWebkitMimePartViewPrivate *priv;
 619
 620         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 621
 622         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 623         return priv->has_external_images;
 624 }
 625
 626 static void
 627 set_zoom (ModestWebkitMimePartView *self, gdouble zoom)
 628 {
 629         ModestWebkitMimePartViewPrivate *priv;
 630
 631         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 632
 633         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 634         priv->current_zoom = zoom;
 635
 636         gtk_widget_queue_resize (GTK_WIDGET (self));
 637 }
 638
 639 static gdouble
 640 get_zoom (ModestWebkitMimePartView *self)
 641 {
 642         ModestWebkitMimePartViewPrivate *priv;
 643
 644         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), 1.0);
 645
 646         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 647
 648         return priv->current_zoom;
 649 }
 650
 651 static gboolean
 652 search (ModestWebkitMimePartView *self,
 653         const gchar *string)
 654 {
 655         return FALSE;
 656 }
 657
 658 static gboolean
 659 search_next (ModestWebkitMimePartView *self)
 660 {
 661         return FALSE;
 662 }
 663
 664 static gboolean
 665 get_selection_area (ModestWebkitMimePartView *self,
 666                     gint *x, gint *y,
 667                     gint *width, gint *height)
 668 {
 669         return FALSE;
 670 }
 671
 672
 673 /* TNY MIME PART IMPLEMENTATION */
 674
 675 static void
 676 tny_mime_part_view_init (gpointer g, gpointer iface_data)
 677 {
 678         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
 679
 680         klass->get_part = modest_webkit_mime_part_view_get_part;
 681         klass->set_part = modest_webkit_mime_part_view_set_part;
 682         klass->clear = modest_webkit_mime_part_view_clear;
 683
 684         return;
 685 }
 686
 687 static TnyMimePart*
 688 modest_webkit_mime_part_view_get_part (TnyMimePartView *self)
 689 {
 690         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_part_func (self);
 691 }
 692
 693
 694 static TnyMimePart*
 695 modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self)
 696 {
 697         return TNY_MIME_PART (get_part (MODEST_WEBKIT_MIME_PART_VIEW (self)));
 698 }
 699
 700 static void
 701 modest_webkit_mime_part_view_set_part (TnyMimePartView *self,
 702                                         TnyMimePart *part)
 703 {
 704         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_part_func (self, part);
 705 }
 706
 707 static void
 708 modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self,
 709                                                 TnyMimePart *part)
 710 {
 711         g_return_if_fail ((part == NULL) || TNY_IS_MIME_PART (part));
 712
 713         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), part);
 714 }
 715
 716 static void
 717 modest_webkit_mime_part_view_clear (TnyMimePartView *self)
 718 {
 719         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->clear_func (self);
 720 }
 721
 722 static void
 723 modest_webkit_mime_part_view_clear_default (TnyMimePartView *self)
 724 {
 725         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), NULL);
 726 }
 727
 728 /* MODEST MIME PART VIEW IMPLEMENTATION */
 729
 730 static void
 731 modest_mime_part_view_init (gpointer g, gpointer iface_data)
 732 {
 733         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
 734
 735         klass->is_empty_func = modest_webkit_mime_part_view_is_empty;
 736         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images;
 737         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images;
 738         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images;
 739
 740         return;
 741 }
 742
 743 static gboolean
 744 modest_webkit_mime_part_view_is_empty (ModestMimePartView *self)
 745 {
 746         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->is_empty_func (self);
 747 }
 748
 749 static gboolean
 750 modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self)
 751 {
 752         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_view_images_func (self);
 753 }
 754
 755 static void
 756 modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images)
 757 {
 758         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_view_images_func (self, view_images);
 759 }
 760
 761 static gboolean
 762 modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self)
 763 {
 764         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->has_external_images_func (self);
 765 }
 766
 767 static gboolean
 768 modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self)
 769 {
 770         return is_empty (MODEST_WEBKIT_MIME_PART_VIEW (self));
 771 }
 772
 773 static gboolean
 774 modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self)
 775 {
 776         return get_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 777 }
 778
 779 static void
 780 modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images)
 781 {
 782         set_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self), view_images);
 783 }
 784
 785 static gboolean
 786 modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self)
 787 {
 788         return has_external_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 789 }
 790
 791
 792 /* MODEST ZOOMABLE IMPLEMENTATION */
 793 static void
 794 modest_zoomable_init (gpointer g, gpointer iface_data)
 795 {
 796         ModestZoomableIface *klass = (ModestZoomableIface *)g;
 797
 798         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom;
 799         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom;
 800         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus;
 801         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus;
 802
 803         return;
 804 }
 805
 806 static gdouble
 807 modest_webkit_mime_part_view_get_zoom (ModestZoomable *self)
 808 {
 809         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_zoom_func (self);
 810 }
 811
 812 static gdouble
 813 modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self)
 814 {
 815         return get_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self));
 816 }
 817
 818 static void
 819 modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value)
 820 {
 821         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
 822 }
 823
 824 static void
 825 modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value)
 826 {
 827         set_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self), value);
 828 }
 829
 830 static gboolean
 831 modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self)
 832 {
 833         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_minus_func (self);
 834 }
 835
 836 static gboolean
 837 modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self)
 838 {
 839         /* operation not supported in ModestWebkitMimePartView */
 840         return FALSE;
 841 }
 842
 843 static gboolean
 844 modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self)
 845 {
 846         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_plus_func (self);
 847 }
 848
 849 static gboolean
 850 modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self)
 851 {
 852         /* operation not supported in ModestWebkitMimePartView */
 853         return FALSE;
 854 }
 855
 856 /* ISEARCH VIEW IMPLEMENTATION */
 857 static void
 858 modest_isearch_view_init (gpointer g, gpointer iface_data)
 859 {
 860         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
 861
 862         klass->search_func = modest_webkit_mime_part_view_search;
 863         klass->search_next_func = modest_webkit_mime_part_view_search_next;
 864         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area;
 865
 866         return;
 867 }
 868
 869 static gboolean
 870 modest_webkit_mime_part_view_search (ModestISearchView *self, const gchar *string)
 871 {
 872         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_func (self, string);
 873 }
 874
 875 static gboolean
 876 modest_webkit_mime_part_view_search_default (ModestISearchView *self, const gchar *string)
 877 {
 878         return search (MODEST_WEBKIT_MIME_PART_VIEW (self), string);
 879 }
 880
 881 static gboolean
 882 modest_webkit_mime_part_view_search_next(ModestISearchView *self)
 883 {
 884         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_next_func (self);
 885 }
 886
 887 static gboolean
 888 modest_webkit_mime_part_view_search_next_default (ModestISearchView *self)
 889 {
 890         return search_next (MODEST_WEBKIT_MIME_PART_VIEW (self));
 891 }
 892
 893 static gboolean
 894 modest_webkit_mime_part_view_get_selection_area (ModestISearchView *self, gint *x, gint *y,
 895                                                   gint *width, gint *height)
 896 {
 897         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_selection_area_func (self, x, y, width, height);
 898 }
 899
 900 static gboolean
 901 modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 902                                                           gint *width, gint *height)
 903 {
 904         return get_selection_area (MODEST_WEBKIT_MIME_PART_VIEW (self), x, y, width, height);
 905 }