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 gboolean on_navigation_policy_decision_requested (WebKitWebView             *web_view,
  66                                                          WebKitWebFrame            *frame,
  67                                                          WebKitNetworkRequest      *request,
  68                                                          WebKitWebNavigationAction *navigation_action,
  69                                                          WebKitWebPolicyDecision   *policy_decision,
  70                                                          gpointer                   user_data);
  71 static void      on_notify_style  (GObject *obj, GParamSpec *spec, gpointer userdata);
  72 static gboolean  update_style     (ModestWebkitMimePartView *self);
  73 /* TnyMimePartView implementation */
  74 static void modest_webkit_mime_part_view_clear (TnyMimePartView *self);
  75 static void modest_webkit_mime_part_view_clear_default (TnyMimePartView *self);
  76 static void modest_webkit_mime_part_view_set_part (TnyMimePartView *self, TnyMimePart *part);
  77 static void modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self, TnyMimePart *part);
  78 static TnyMimePart* modest_webkit_mime_part_view_get_part (TnyMimePartView *self);
  79 static TnyMimePart* modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self);
  80 /* ModestMimePartView implementation */
  81 static gboolean modest_webkit_mime_part_view_is_empty (ModestMimePartView *self);
  82 static gboolean modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self);
  83 static gboolean modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self);
  84 static gboolean modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self);
  85 static void     modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images);
  86 static void     modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images);
  87 static gboolean modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self);
  88 static gboolean modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self);
  89 /* ModestZoomable implementation */
  90 static gdouble modest_webkit_mime_part_view_get_zoom (ModestZoomable *self);
  91 static void modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value);
  92 static gboolean modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self);
  93 static gboolean modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self);
  94 static gdouble modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self);
  95 static void modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value);
  96 static gboolean modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self);
  97 static gboolean modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self);
  98 /* ModestISearchView implementation */
  99 static gboolean modest_webkit_mime_part_view_search                    (ModestISearchView *self, const gchar *string);
 100 static gboolean modest_webkit_mime_part_view_search_next               (ModestISearchView *self);
 101 static gboolean modest_webkit_mime_part_view_get_selection_area        (ModestISearchView *self, gint *x, gint *y,
 102                                                                          gint *width, gint *height);
 103 static gboolean modest_webkit_mime_part_view_search_default            (ModestISearchView *self, const gchar *string);
 104 static gboolean modest_webkit_mime_part_view_search_next_default       (ModestISearchView *self);
 105 static gboolean modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 106                                                                           gint *width, gint *height);
 107
 108
 109 /* internal api */
 110 static TnyMimePart  *get_part   (ModestWebkitMimePartView *self);
 111 static void          set_html_part   (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding);
 112 static void          set_text_part   (ModestWebkitMimePartView *self, TnyMimePart *part);
 113 static void          set_empty_part  (ModestWebkitMimePartView *self);
 114 static void          set_part   (ModestWebkitMimePartView *self, TnyMimePart *part);
 115 static gboolean      is_empty   (ModestWebkitMimePartView *self);
 116 static gboolean      get_view_images   (ModestWebkitMimePartView *self);
 117 static void          set_view_images   (ModestWebkitMimePartView *self, gboolean view_images);
 118 static gboolean      has_external_images   (ModestWebkitMimePartView *self);
 119 static void          set_zoom   (ModestWebkitMimePartView *self, gdouble zoom);
 120 static gdouble       get_zoom   (ModestWebkitMimePartView *self);
 121 static gboolean      search             (ModestWebkitMimePartView *self, const gchar *string);
 122 static gboolean      search_next        (ModestWebkitMimePartView *self);
 123 static gboolean      get_selection_area (ModestWebkitMimePartView *self, gint *x, gint *y,
 124                                          gint *width, gint *height);
 125
 126 typedef struct _ModestWebkitMimePartViewPrivate ModestWebkitMimePartViewPrivate;
 127 struct _ModestWebkitMimePartViewPrivate {
 128         TnyMimePart *part;
 129         gdouble current_zoom;
 130         gboolean view_images;
 131         gboolean has_external_images;
 132         GSList *sighandlers;
 133 };
 134
 135 #define MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 136                                                                                        MODEST_TYPE_WEBKIT_MIME_PART_VIEW, \
 137                                                                                        ModestWebkitMimePartViewPrivate))
 138
 139 enum {
 140         STOP_STREAMS_SIGNAL,
 141         LIMIT_ERROR_SIGNAL,
 142         LAST_SIGNAL
 143 };
 144
 145 static WebKitWebViewClass *parent_class = NULL;
 146
 147 static guint signals[LAST_SIGNAL] = {0};
 148
 149 GtkWidget *
 150 modest_webkit_mime_part_view_new ()
 151 {
 152         return g_object_new (MODEST_TYPE_WEBKIT_MIME_PART_VIEW, NULL);
 153 }
 154
 155 /* GOBJECT IMPLEMENTATION */
 156 GType
 157 modest_webkit_mime_part_view_get_type (void)
 158 {
 159         static GType my_type = 0;
 160         if (!my_type) {
 161                 static const GTypeInfo my_info = {
 162                         sizeof(ModestWebkitMimePartViewClass),
 163                         NULL,           /* base init */
 164                         NULL,           /* base finalize */
 165                         (GClassInitFunc) modest_webkit_mime_part_view_class_init,
 166                         NULL,           /* class finalize */
 167                         NULL,           /* class data */
 168                         sizeof(ModestWebkitMimePartView),
 169                         1,              /* n_preallocs */
 170                         (GInstanceInitFunc) modest_webkit_mime_part_view_init,
 171                         NULL
 172                 };
 173
 174                 static const GInterfaceInfo tny_mime_part_view_info =
 175                 {
 176                   (GInterfaceInitFunc) tny_mime_part_view_init, /* interface_init */
 177                   NULL,         /* interface_finalize */
 178                   NULL          /* interface_data */
 179                 };
 180
 181                 static const GInterfaceInfo modest_mime_part_view_info =
 182                 {
 183                   (GInterfaceInitFunc) modest_mime_part_view_init, /* interface_init */
 184                   NULL,         /* interface_finalize */
 185                   NULL          /* interface_data */
 186                 };
 187
 188                 static const GInterfaceInfo modest_zoomable_info =
 189                 {
 190                   (GInterfaceInitFunc) modest_zoomable_init, /* interface_init */
 191                   NULL,         /* interface_finalize */
 192                   NULL          /* interface_data */
 193                 };
 194
 195                 static const GInterfaceInfo modest_isearch_view_info =
 196                 {
 197                   (GInterfaceInitFunc) modest_isearch_view_init, /* interface_init */
 198                   NULL,         /* interface_finalize */
 199                   NULL          /* interface_data */
 200                 };
 201
 202                 my_type = g_type_register_static (WEBKIT_TYPE_WEB_VIEW,
 203                                                   "ModestWebkitMimePartView",
 204                                                   &my_info, 0);
 205
 206                 g_type_add_interface_static (my_type, TNY_TYPE_MIME_PART_VIEW,
 207                         &tny_mime_part_view_info);
 208
 209                 g_type_add_interface_static (my_type, MODEST_TYPE_MIME_PART_VIEW,
 210                         &modest_mime_part_view_info);
 211
 212                 g_type_add_interface_static (my_type, MODEST_TYPE_ZOOMABLE,
 213                         &modest_zoomable_info);
 214                 g_type_add_interface_static (my_type, MODEST_TYPE_ISEARCH_VIEW,
 215                         &modest_isearch_view_info);
 216         }
 217         return my_type;
 218 }
 219
 220 static void
 221 modest_webkit_mime_part_view_class_init (ModestWebkitMimePartViewClass *klass)
 222 {
 223         GObjectClass *gobject_class;
 224         GtkBindingSet *binding_set;
 225
 226         gobject_class = (GObjectClass*) klass;
 227
 228         parent_class            = g_type_class_peek_parent (klass);
 229         gobject_class->dispose = modest_webkit_mime_part_view_dispose;
 230         gobject_class->finalize = modest_webkit_mime_part_view_finalize;
 231
 232         klass->get_part_func = modest_webkit_mime_part_view_get_part_default;
 233         klass->set_part_func = modest_webkit_mime_part_view_set_part_default;
 234         klass->clear_func = modest_webkit_mime_part_view_clear_default;
 235         klass->is_empty_func = modest_webkit_mime_part_view_is_empty_default;
 236         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images_default;
 237         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images_default;
 238         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images_default;
 239         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom_default;
 240         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom_default;
 241         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus_default;
 242         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus_default;
 243         klass->search_func = modest_webkit_mime_part_view_search_default;
 244         klass->search_next_func = modest_webkit_mime_part_view_search_next_default;
 245         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area_default;
 246
 247         binding_set = gtk_binding_set_by_class (klass);
 248         gtk_binding_entry_skip (binding_set, GDK_Down, 0);
 249         gtk_binding_entry_skip (binding_set, GDK_Up, 0);
 250         gtk_binding_entry_skip (binding_set, GDK_KP_Up, 0);
 251         gtk_binding_entry_skip (binding_set, GDK_KP_Down, 0);
 252         gtk_binding_entry_skip (binding_set, GDK_Page_Down, 0);
 253         gtk_binding_entry_skip (binding_set, GDK_Page_Up, 0);
 254         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Up, 0);
 255         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Down, 0);
 256         gtk_binding_entry_skip (binding_set, GDK_Home, 0);
 257         gtk_binding_entry_skip (binding_set, GDK_End, 0);
 258         gtk_binding_entry_skip (binding_set, GDK_KP_Home, 0);
 259         gtk_binding_entry_skip (binding_set, GDK_KP_End, 0);
 260
 261         g_type_class_add_private (gobject_class, sizeof(ModestWebkitMimePartViewPrivate));
 262
 263         signals[STOP_STREAMS_SIGNAL] =
 264                 g_signal_new ("stop-streams",
 265                               G_TYPE_FROM_CLASS (gobject_class),
 266                               G_SIGNAL_RUN_FIRST,
 267                               G_STRUCT_OFFSET (ModestWebkitMimePartViewClass,stop_streams),
 268                               NULL, NULL,
 269                               g_cclosure_marshal_VOID__VOID,
 270                               G_TYPE_NONE, 0);
 271
 272         signals[LIMIT_ERROR_SIGNAL] =
 273                 g_signal_new ("limit-error",
 274                               G_TYPE_FROM_CLASS (gobject_class),
 275                               G_SIGNAL_RUN_FIRST,
 276                               G_STRUCT_OFFSET (ModestWebkitMimePartViewClass,limit_error),
 277                               NULL, NULL,
 278                               g_cclosure_marshal_VOID__VOID,
 279                               G_TYPE_NONE, 0);
 280
 281 }
 282
 283 static void
 284 modest_webkit_mime_part_view_init (ModestWebkitMimePartView *self)
 285 {
 286         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 287         GdkColor base;
 288         GdkColor text;
 289         WebKitWebSettings *settings;
 290
 291         gdk_color_parse ("#fff", &base);
 292         gdk_color_parse ("#000", &text);
 293         gtk_widget_modify_base (GTK_WIDGET (self), GTK_STATE_NORMAL, &base);
 294         gtk_widget_modify_text (GTK_WIDGET (self), GTK_STATE_NORMAL, &text);
 295
 296         priv->sighandlers = NULL;
 297
 298         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 299                                                        G_OBJECT(self), "notify::style",
 300                                                        G_CALLBACK (on_notify_style), (gpointer) self);
 301         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 302                                                        G_OBJECT (self), "resource-request-starting",
 303                                                        G_CALLBACK (on_resource_request_starting), (gpointer) self);
 304         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 305                                                        G_OBJECT (self), "navigation-policy-decision-requested",
 306                                                        G_CALLBACK (on_navigation_policy_decision_requested), (gpointer) self);
 307
 308         priv->part = NULL;
 309         priv->current_zoom = 1.0;
 310         priv->view_images = FALSE;
 311         priv->has_external_images = FALSE;
 312
 313         settings = webkit_web_settings_new ();
 314         g_object_set (G_OBJECT (settings),
 315                       "auto-load-images", FALSE,
 316                       "enable-html5-database", FALSE,
 317                       "enable-html5-local-storage", FALSE,
 318                       "enable-offline-web-application-cache", FALSE,
 319                       "enable-plugins", FALSE,
 320                       "enable-private-browsing", TRUE,
 321                       "enable-scripts", FALSE,
 322                       NULL);
 323         webkit_web_view_set_settings (WEBKIT_WEB_VIEW (self), settings);
 324         g_object_unref (settings);
 325         g_object_set (G_OBJECT (self),
 326                       "editable", FALSE,
 327                       NULL);
 328 }
 329
 330 static void
 331 modest_webkit_mime_part_view_finalize (GObject *obj)
 332 {
 333         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 334
 335         modest_signal_mgr_disconnect_all_and_destroy (priv->sighandlers);
 336         priv->sighandlers = NULL;
 337
 338         G_OBJECT_CLASS (parent_class)->finalize (obj);
 339 }
 340
 341 static void
 342 modest_webkit_mime_part_view_dispose (GObject *obj)
 343 {
 344         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 345
 346         g_signal_emit (G_OBJECT (obj), signals[STOP_STREAMS_SIGNAL], 0);
 347
 348         if (priv->part) {
 349                 g_object_unref (priv->part);
 350                 priv->part = NULL;
 351         }
 352
 353         G_OBJECT_CLASS (parent_class)->dispose (obj);
 354 }
 355
 356 /* WEBKIT SIGNALS HANDLERS */
 357
 358 static void
 359 on_resource_request_starting (WebKitWebView *webview,
 360                               WebKitWebFrame *frame,
 361                               WebKitWebResource *resource,
 362                               WebKitNetworkRequest *request,
 363                               WebKitNetworkResponse *response,
 364                               gpointer userdata)
 365 {
 366         ModestWebkitMimePartView *self = (ModestWebkitMimePartView *) userdata;
 367         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 368
 369         if (g_str_has_prefix (webkit_network_request_get_uri (request), "http:")) {
 370                 ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 371
 372                 if (!priv->view_images)
 373                         priv->has_external_images = TRUE;
 374         }
 375
 376         webkit_network_request_set_uri (request, "about:blank");
 377 }
 378
 379 static gboolean
 380 on_navigation_policy_decision_requested (WebKitWebView             *web_view,
 381                                          WebKitWebFrame            *frame,
 382                                          WebKitNetworkRequest      *request,
 383                                          WebKitWebNavigationAction *navigation_action,
 384                                          WebKitWebPolicyDecision   *policy_decision,
 385                                          gpointer                   user_data)
 386 {
 387         WebKitWebNavigationReason reason;
 388         reason = webkit_web_navigation_action_get_reason (navigation_action);
 389         if (reason != WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED && reason != WEBKIT_WEB_NAVIGATION_REASON_OTHER) {
 390                 webkit_web_policy_decision_ignore (policy_decision);
 391                 return TRUE;
 392         }
 393         return FALSE;
 394 }
 395
 396 static void
 397 on_notify_style (GObject *obj, GParamSpec *spec, gpointer userdata)
 398 {
 399         if (strcmp ("style", spec->name) == 0) {
 400                 g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc) update_style,
 401                                  g_object_ref (obj), g_object_unref);
 402                 gtk_widget_queue_draw (GTK_WIDGET (obj));
 403         }
 404 }
 405
 406 gboolean
 407 same_color (GdkColor *a, GdkColor *b)
 408 {
 409         return ((a->red == b->red) &&
 410                 (a->green == b->green) &&
 411                 (a->blue == b->blue));
 412 }
 413
 414 static gboolean
 415 update_style (ModestWebkitMimePartView *self)
 416 {
 417         GdkColor base;
 418         GdkColor text;
 419         GtkRcStyle *rc_style;
 420
 421         gdk_threads_enter ();
 422
 423         if (GTK_WIDGET_VISIBLE (self)) {
 424                 rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (self));
 425
 426                 gdk_color_parse ("#fff", &base);
 427                 gdk_color_parse ("#000", &text);
 428
 429                 if (!same_color (&(rc_style->base[GTK_STATE_NORMAL]), &base) &&
 430                     !same_color (&(rc_style->text[GTK_STATE_NORMAL]), &text)) {
 431
 432                         rc_style->base[GTK_STATE_NORMAL] = base;
 433                         rc_style->text[GTK_STATE_NORMAL] = text;
 434                         gtk_widget_modify_style (GTK_WIDGET (self), rc_style);
 435                 }
 436         }
 437
 438         gdk_threads_leave ();
 439
 440         return FALSE;
 441 }
 442
 443
 444 /* INTERNAL API */
 445 static void
 446 decode_to_stream_cb (TnyMimePart *self,
 447                      gboolean cancelled,
 448                      TnyStream *stream,
 449                      GError *err,
 450                      gpointer user_data)
 451 {
 452         ModestWebkitMimePartView *view = (ModestWebkitMimePartView *) user_data;
 453
 454         if (MODEST_IS_STREAM_TEXT_TO_HTML (stream)) {
 455                 if (tny_stream_write (stream, "\n", 1) == -1) {
 456                         g_warning ("failed to write CR in %s", __FUNCTION__);
 457                 }
 458                 if (modest_stream_text_to_html_limit_reached (MODEST_STREAM_TEXT_TO_HTML (stream))) {
 459                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 460                 }
 461                 tny_stream_reset (stream);
 462         } else {
 463                 if (modest_tny_stream_webkit_limit_reached (MODEST_TNY_STREAM_WEBKIT (stream))) {
 464                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 465                 }
 466         }
 467         tny_stream_close (stream);
 468 }
 469
 470 static void
 471 set_html_part (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding)
 472 {
 473         TnyStream *tny_stream;
 474
 475         g_return_if_fail (self);
 476         g_return_if_fail (part);
 477
 478         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 479
 480         tny_stream     = TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", encoding));
 481         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 482         tny_stream_reset (tny_stream);
 483
 484         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 485                                               tny_stream, decode_to_stream_cb,
 486                                               NULL, self);
 487         g_object_unref (tny_stream);
 488 }
 489
 490 static void
 491 set_text_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 492 {
 493         TnyStream* text_to_html_stream, *tny_stream;
 494
 495         g_return_if_fail (self);
 496         g_return_if_fail (part);
 497
 498         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 499
 500         tny_stream =  TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", "utf-8"));
 501         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 502         text_to_html_stream = TNY_STREAM (modest_stream_text_to_html_new (tny_stream));
 503         modest_stream_text_to_html_set_linkify_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 504                                                       64*1024);
 505         modest_stream_text_to_html_set_full_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 506                                                    128*1024);
 507         modest_stream_text_to_html_set_line_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 508                                                    1024);
 509
 510         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 511                                               text_to_html_stream, decode_to_stream_cb,
 512                                               NULL, self);
 513
 514         g_object_unref (G_OBJECT(text_to_html_stream));
 515         g_object_unref (G_OBJECT(tny_stream));
 516 }
 517
 518 static void
 519 set_empty_part (ModestWebkitMimePartView *self)
 520 {
 521         g_return_if_fail (self);
 522
 523         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 524         webkit_web_view_load_string (WEBKIT_WEB_VIEW (self), "", "text/plain", "utf-8", NULL);
 525 }
 526
 527 static void
 528 set_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 529 {
 530         ModestWebkitMimePartViewPrivate *priv;
 531         gchar *header_content_type, *header_content_type_lower;
 532         const gchar *tmp;
 533         gchar *charset = NULL;
 534
 535         g_return_if_fail (self);
 536
 537         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self);
 538         priv->has_external_images = FALSE;
 539
 540         if (part != priv->part) {
 541                 if (priv->part)
 542                         g_object_unref (G_OBJECT(priv->part));
 543                 if (part)
 544                         g_object_ref   (G_OBJECT(part));
 545                 priv->part = part;
 546         }
 547
 548         if (!part) {
 549                 set_empty_part (self);
 550                 return;
 551         }
 552
 553         header_content_type = modest_tny_mime_part_get_header_value (part, "Content-Type");
 554         if (header_content_type) {
 555                 header_content_type = g_strstrip (header_content_type);
 556                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 557         } else {
 558                 header_content_type_lower = NULL;
 559         }
 560
 561         if (header_content_type_lower) {
 562                 tmp = strstr (header_content_type_lower, "charset=");
 563                 if (tmp) {
 564                         const gchar *tmp2;
 565                         tmp = tmp + strlen ("charset=");
 566
 567                         tmp2 = strstr (tmp, ";");
 568                         if (tmp2) {
 569                                 charset = g_strndup (tmp, tmp2-tmp);
 570                         } else {
 571                                 charset = g_strdup (tmp);
 572                         }
 573                 }
 574         }
 575
 576         if (tny_mime_part_content_type_is (part, "text/html")) {
 577                 set_html_part (self, part, charset);
 578         } else {
 579                 if (tny_mime_part_content_type_is (part, "message/rfc822")) {
 580                         if (header_content_type) {
 581                                 if (g_str_has_prefix (header_content_type_lower, "text/html"))
 582                                         set_html_part (self, part, charset);
 583                                 else
 584                                         set_text_part (self, part);
 585
 586                         } else {
 587                                 set_text_part (self, part);
 588                         }
 589                 } else {
 590                         set_text_part (self, part);
 591                 }
 592         }
 593         g_free (header_content_type_lower);
 594         g_free (header_content_type);
 595
 596 }
 597
 598 static TnyMimePart*
 599 get_part (ModestWebkitMimePartView *self)
 600 {
 601         TnyMimePart *part;
 602
 603         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), NULL);
 604
 605         part = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self)->part;
 606
 607         if (part)
 608                 g_object_ref (part);
 609
 610         return part;
 611 }
 612
 613 static gboolean
 614 is_empty   (ModestWebkitMimePartView *self)
 615 {
 616         return FALSE;
 617 }
 618
 619 static gboolean
 620 get_view_images   (ModestWebkitMimePartView *self)
 621 {
 622         ModestWebkitMimePartViewPrivate *priv;
 623
 624         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 625
 626         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 627         return priv->view_images;
 628 }
 629
 630 static void
 631 set_view_images   (ModestWebkitMimePartView *self, gboolean view_images)
 632 {
 633         ModestWebkitMimePartViewPrivate *priv;
 634
 635         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 636
 637         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 638         priv->view_images = view_images;
 639 }
 640
 641 static gboolean
 642 has_external_images   (ModestWebkitMimePartView *self)
 643 {
 644         ModestWebkitMimePartViewPrivate *priv;
 645
 646         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 647
 648         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 649         return priv->has_external_images;
 650 }
 651
 652 static void
 653 set_zoom (ModestWebkitMimePartView *self, gdouble zoom)
 654 {
 655         ModestWebkitMimePartViewPrivate *priv;
 656
 657         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 658
 659         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 660         priv->current_zoom = zoom;
 661
 662         gtk_widget_queue_resize (GTK_WIDGET (self));
 663 }
 664
 665 static gdouble
 666 get_zoom (ModestWebkitMimePartView *self)
 667 {
 668         ModestWebkitMimePartViewPrivate *priv;
 669
 670         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), 1.0);
 671
 672         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 673
 674         return priv->current_zoom;
 675 }
 676
 677 static gboolean
 678 search (ModestWebkitMimePartView *self,
 679         const gchar *string)
 680 {
 681         return FALSE;
 682 }
 683
 684 static gboolean
 685 search_next (ModestWebkitMimePartView *self)
 686 {
 687         return FALSE;
 688 }
 689
 690 static gboolean
 691 get_selection_area (ModestWebkitMimePartView *self,
 692                     gint *x, gint *y,
 693                     gint *width, gint *height)
 694 {
 695         return FALSE;
 696 }
 697
 698
 699 /* TNY MIME PART IMPLEMENTATION */
 700
 701 static void
 702 tny_mime_part_view_init (gpointer g, gpointer iface_data)
 703 {
 704         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
 705
 706         klass->get_part = modest_webkit_mime_part_view_get_part;
 707         klass->set_part = modest_webkit_mime_part_view_set_part;
 708         klass->clear = modest_webkit_mime_part_view_clear;
 709
 710         return;
 711 }
 712
 713 static TnyMimePart*
 714 modest_webkit_mime_part_view_get_part (TnyMimePartView *self)
 715 {
 716         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_part_func (self);
 717 }
 718
 719
 720 static TnyMimePart*
 721 modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self)
 722 {
 723         return TNY_MIME_PART (get_part (MODEST_WEBKIT_MIME_PART_VIEW (self)));
 724 }
 725
 726 static void
 727 modest_webkit_mime_part_view_set_part (TnyMimePartView *self,
 728                                         TnyMimePart *part)
 729 {
 730         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_part_func (self, part);
 731 }
 732
 733 static void
 734 modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self,
 735                                                 TnyMimePart *part)
 736 {
 737         g_return_if_fail ((part == NULL) || TNY_IS_MIME_PART (part));
 738
 739         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), part);
 740 }
 741
 742 static void
 743 modest_webkit_mime_part_view_clear (TnyMimePartView *self)
 744 {
 745         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->clear_func (self);
 746 }
 747
 748 static void
 749 modest_webkit_mime_part_view_clear_default (TnyMimePartView *self)
 750 {
 751         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), NULL);
 752 }
 753
 754 /* MODEST MIME PART VIEW IMPLEMENTATION */
 755
 756 static void
 757 modest_mime_part_view_init (gpointer g, gpointer iface_data)
 758 {
 759         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
 760
 761         klass->is_empty_func = modest_webkit_mime_part_view_is_empty;
 762         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images;
 763         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images;
 764         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images;
 765
 766         return;
 767 }
 768
 769 static gboolean
 770 modest_webkit_mime_part_view_is_empty (ModestMimePartView *self)
 771 {
 772         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->is_empty_func (self);
 773 }
 774
 775 static gboolean
 776 modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self)
 777 {
 778         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_view_images_func (self);
 779 }
 780
 781 static void
 782 modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images)
 783 {
 784         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_view_images_func (self, view_images);
 785 }
 786
 787 static gboolean
 788 modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self)
 789 {
 790         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->has_external_images_func (self);
 791 }
 792
 793 static gboolean
 794 modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self)
 795 {
 796         return is_empty (MODEST_WEBKIT_MIME_PART_VIEW (self));
 797 }
 798
 799 static gboolean
 800 modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self)
 801 {
 802         return get_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 803 }
 804
 805 static void
 806 modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images)
 807 {
 808         set_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self), view_images);
 809 }
 810
 811 static gboolean
 812 modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self)
 813 {
 814         return has_external_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 815 }
 816
 817
 818 /* MODEST ZOOMABLE IMPLEMENTATION */
 819 static void
 820 modest_zoomable_init (gpointer g, gpointer iface_data)
 821 {
 822         ModestZoomableIface *klass = (ModestZoomableIface *)g;
 823
 824         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom;
 825         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom;
 826         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus;
 827         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus;
 828
 829         return;
 830 }
 831
 832 static gdouble
 833 modest_webkit_mime_part_view_get_zoom (ModestZoomable *self)
 834 {
 835         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_zoom_func (self);
 836 }
 837
 838 static gdouble
 839 modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self)
 840 {
 841         return get_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self));
 842 }
 843
 844 static void
 845 modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value)
 846 {
 847         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
 848 }
 849
 850 static void
 851 modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value)
 852 {
 853         set_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self), value);
 854 }
 855
 856 static gboolean
 857 modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self)
 858 {
 859         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_minus_func (self);
 860 }
 861
 862 static gboolean
 863 modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self)
 864 {
 865         /* operation not supported in ModestWebkitMimePartView */
 866         return FALSE;
 867 }
 868
 869 static gboolean
 870 modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self)
 871 {
 872         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_plus_func (self);
 873 }
 874
 875 static gboolean
 876 modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self)
 877 {
 878         /* operation not supported in ModestWebkitMimePartView */
 879         return FALSE;
 880 }
 881
 882 /* ISEARCH VIEW IMPLEMENTATION */
 883 static void
 884 modest_isearch_view_init (gpointer g, gpointer iface_data)
 885 {
 886         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
 887
 888         klass->search_func = modest_webkit_mime_part_view_search;
 889         klass->search_next_func = modest_webkit_mime_part_view_search_next;
 890         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area;
 891
 892         return;
 893 }
 894
 895 static gboolean
 896 modest_webkit_mime_part_view_search (ModestISearchView *self, const gchar *string)
 897 {
 898         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_func (self, string);
 899 }
 900
 901 static gboolean
 902 modest_webkit_mime_part_view_search_default (ModestISearchView *self, const gchar *string)
 903 {
 904         return search (MODEST_WEBKIT_MIME_PART_VIEW (self), string);
 905 }
 906
 907 static gboolean
 908 modest_webkit_mime_part_view_search_next(ModestISearchView *self)
 909 {
 910         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_next_func (self);
 911 }
 912
 913 static gboolean
 914 modest_webkit_mime_part_view_search_next_default (ModestISearchView *self)
 915 {
 916         return search_next (MODEST_WEBKIT_MIME_PART_VIEW (self));
 917 }
 918
 919 static gboolean
 920 modest_webkit_mime_part_view_get_selection_area (ModestISearchView *self, gint *x, gint *y,
 921                                                   gint *width, gint *height)
 922 {
 923         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_selection_area_func (self, x, y, width, height);
 924 }
 925
 926 static gboolean
 927 modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 928                                                           gint *width, gint *height)
 929 {
 930         return get_selection_area (MODEST_WEBKIT_MIME_PART_VIEW (self), x, y, width, height);
 931 }