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_new_window_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 gboolean on_navigation_policy_decision_requested (WebKitWebView             *web_view,
  72                                                          WebKitWebFrame            *frame,
  73                                                          WebKitNetworkRequest      *request,
  74                                                          WebKitWebNavigationAction *navigation_action,
  75                                                          WebKitWebPolicyDecision   *policy_decision,
  76                                                          gpointer                   user_data);
  77 static WebKitNavigationResponse on_navigation_requested                      (WebKitWebView        *web_view,
  78                                                                               WebKitWebFrame       *frame,
  79                                                                               WebKitNetworkRequest *request,
  80                                                                               gpointer              user_data);
  81 static void      on_notify_style  (GObject *obj, GParamSpec *spec, gpointer userdata);
  82 static gboolean  update_style     (ModestWebkitMimePartView *self);
  83 /* TnyMimePartView implementation */
  84 static void modest_webkit_mime_part_view_clear (TnyMimePartView *self);
  85 static void modest_webkit_mime_part_view_clear_default (TnyMimePartView *self);
  86 static void modest_webkit_mime_part_view_set_part (TnyMimePartView *self, TnyMimePart *part);
  87 static void modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self, TnyMimePart *part);
  88 static TnyMimePart* modest_webkit_mime_part_view_get_part (TnyMimePartView *self);
  89 static TnyMimePart* modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self);
  90 /* ModestMimePartView implementation */
  91 static gboolean modest_webkit_mime_part_view_is_empty (ModestMimePartView *self);
  92 static gboolean modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self);
  93 static gboolean modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self);
  94 static gboolean modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self);
  95 static void     modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images);
  96 static void     modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images);
  97 static gboolean modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self);
  98 static gboolean modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self);
  99 /* ModestZoomable implementation */
 100 static gdouble modest_webkit_mime_part_view_get_zoom (ModestZoomable *self);
 101 static void modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value);
 102 static gboolean modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self);
 103 static gboolean modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self);
 104 static gdouble modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self);
 105 static void modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value);
 106 static gboolean modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self);
 107 static gboolean modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self);
 108 /* ModestISearchView implementation */
 109 static gboolean modest_webkit_mime_part_view_search                    (ModestISearchView *self, const gchar *string);
 110 static gboolean modest_webkit_mime_part_view_search_next               (ModestISearchView *self);
 111 static gboolean modest_webkit_mime_part_view_get_selection_area        (ModestISearchView *self, gint *x, gint *y,
 112                                                                          gint *width, gint *height);
 113 static gboolean modest_webkit_mime_part_view_search_default            (ModestISearchView *self, const gchar *string);
 114 static gboolean modest_webkit_mime_part_view_search_next_default       (ModestISearchView *self);
 115 static gboolean modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 116                                                                           gint *width, gint *height);
 117
 118
 119 /* internal api */
 120 static TnyMimePart  *get_part   (ModestWebkitMimePartView *self);
 121 static void          set_html_part   (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding);
 122 static void          set_text_part   (ModestWebkitMimePartView *self, TnyMimePart *part);
 123 static void          set_empty_part  (ModestWebkitMimePartView *self);
 124 static void          set_part   (ModestWebkitMimePartView *self, TnyMimePart *part);
 125 static gboolean      is_empty   (ModestWebkitMimePartView *self);
 126 static gboolean      get_view_images   (ModestWebkitMimePartView *self);
 127 static void          set_view_images   (ModestWebkitMimePartView *self, gboolean view_images);
 128 static gboolean      has_external_images   (ModestWebkitMimePartView *self);
 129 static void          set_zoom   (ModestWebkitMimePartView *self, gdouble zoom);
 130 static gdouble       get_zoom   (ModestWebkitMimePartView *self);
 131 static gboolean      search             (ModestWebkitMimePartView *self, const gchar *string);
 132 static gboolean      search_next        (ModestWebkitMimePartView *self);
 133 static gboolean      get_selection_area (ModestWebkitMimePartView *self, gint *x, gint *y,
 134                                          gint *width, gint *height);
 135
 136 typedef struct _ModestWebkitMimePartViewPrivate ModestWebkitMimePartViewPrivate;
 137 struct _ModestWebkitMimePartViewPrivate {
 138         TnyMimePart *part;
 139         gdouble current_zoom;
 140         gboolean view_images;
 141         gboolean has_external_images;
 142         GSList *sighandlers;
 143 };
 144
 145 #define MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 146                                                                                        MODEST_TYPE_WEBKIT_MIME_PART_VIEW, \
 147                                                                                        ModestWebkitMimePartViewPrivate))
 148
 149 enum {
 150         STOP_STREAMS_SIGNAL,
 151         LIMIT_ERROR_SIGNAL,
 152         LAST_SIGNAL
 153 };
 154
 155 static WebKitWebViewClass *parent_class = NULL;
 156
 157 static guint signals[LAST_SIGNAL] = {0};
 158
 159 GtkWidget *
 160 modest_webkit_mime_part_view_new ()
 161 {
 162         return g_object_new (MODEST_TYPE_WEBKIT_MIME_PART_VIEW, NULL);
 163 }
 164
 165 /* GOBJECT IMPLEMENTATION */
 166 GType
 167 modest_webkit_mime_part_view_get_type (void)
 168 {
 169         static GType my_type = 0;
 170         if (!my_type) {
 171                 static const GTypeInfo my_info = {
 172                         sizeof(ModestWebkitMimePartViewClass),
 173                         NULL,           /* base init */
 174                         NULL,           /* base finalize */
 175                         (GClassInitFunc) modest_webkit_mime_part_view_class_init,
 176                         NULL,           /* class finalize */
 177                         NULL,           /* class data */
 178                         sizeof(ModestWebkitMimePartView),
 179                         1,              /* n_preallocs */
 180                         (GInstanceInitFunc) modest_webkit_mime_part_view_init,
 181                         NULL
 182                 };
 183
 184                 static const GInterfaceInfo tny_mime_part_view_info =
 185                 {
 186                   (GInterfaceInitFunc) tny_mime_part_view_init, /* interface_init */
 187                   NULL,         /* interface_finalize */
 188                   NULL          /* interface_data */
 189                 };
 190
 191                 static const GInterfaceInfo modest_mime_part_view_info =
 192                 {
 193                   (GInterfaceInitFunc) modest_mime_part_view_init, /* interface_init */
 194                   NULL,         /* interface_finalize */
 195                   NULL          /* interface_data */
 196                 };
 197
 198                 static const GInterfaceInfo modest_zoomable_info =
 199                 {
 200                   (GInterfaceInitFunc) modest_zoomable_init, /* interface_init */
 201                   NULL,         /* interface_finalize */
 202                   NULL          /* interface_data */
 203                 };
 204
 205                 static const GInterfaceInfo modest_isearch_view_info =
 206                 {
 207                   (GInterfaceInitFunc) modest_isearch_view_init, /* interface_init */
 208                   NULL,         /* interface_finalize */
 209                   NULL          /* interface_data */
 210                 };
 211
 212                 my_type = g_type_register_static (WEBKIT_TYPE_WEB_VIEW,
 213                                                   "ModestWebkitMimePartView",
 214                                                   &my_info, 0);
 215
 216                 g_type_add_interface_static (my_type, TNY_TYPE_MIME_PART_VIEW,
 217                         &tny_mime_part_view_info);
 218
 219                 g_type_add_interface_static (my_type, MODEST_TYPE_MIME_PART_VIEW,
 220                         &modest_mime_part_view_info);
 221
 222                 g_type_add_interface_static (my_type, MODEST_TYPE_ZOOMABLE,
 223                         &modest_zoomable_info);
 224                 g_type_add_interface_static (my_type, MODEST_TYPE_ISEARCH_VIEW,
 225                         &modest_isearch_view_info);
 226         }
 227         return my_type;
 228 }
 229
 230 static void
 231 modest_webkit_mime_part_view_class_init (ModestWebkitMimePartViewClass *klass)
 232 {
 233         GObjectClass *gobject_class;
 234         GtkBindingSet *binding_set;
 235
 236         gobject_class = (GObjectClass*) klass;
 237
 238         parent_class            = g_type_class_peek_parent (klass);
 239         gobject_class->dispose = modest_webkit_mime_part_view_dispose;
 240         gobject_class->finalize = modest_webkit_mime_part_view_finalize;
 241
 242         klass->get_part_func = modest_webkit_mime_part_view_get_part_default;
 243         klass->set_part_func = modest_webkit_mime_part_view_set_part_default;
 244         klass->clear_func = modest_webkit_mime_part_view_clear_default;
 245         klass->is_empty_func = modest_webkit_mime_part_view_is_empty_default;
 246         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images_default;
 247         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images_default;
 248         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images_default;
 249         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom_default;
 250         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom_default;
 251         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus_default;
 252         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus_default;
 253         klass->search_func = modest_webkit_mime_part_view_search_default;
 254         klass->search_next_func = modest_webkit_mime_part_view_search_next_default;
 255         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area_default;
 256
 257         binding_set = gtk_binding_set_by_class (klass);
 258         gtk_binding_entry_skip (binding_set, GDK_Down, 0);
 259         gtk_binding_entry_skip (binding_set, GDK_Up, 0);
 260         gtk_binding_entry_skip (binding_set, GDK_KP_Up, 0);
 261         gtk_binding_entry_skip (binding_set, GDK_KP_Down, 0);
 262         gtk_binding_entry_skip (binding_set, GDK_Page_Down, 0);
 263         gtk_binding_entry_skip (binding_set, GDK_Page_Up, 0);
 264         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Up, 0);
 265         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Down, 0);
 266         gtk_binding_entry_skip (binding_set, GDK_Home, 0);
 267         gtk_binding_entry_skip (binding_set, GDK_End, 0);
 268         gtk_binding_entry_skip (binding_set, GDK_KP_Home, 0);
 269         gtk_binding_entry_skip (binding_set, GDK_KP_End, 0);
 270
 271         g_type_class_add_private (gobject_class, sizeof(ModestWebkitMimePartViewPrivate));
 272
 273         signals[STOP_STREAMS_SIGNAL] =
 274                 g_signal_new ("stop-streams",
 275                               G_TYPE_FROM_CLASS (gobject_class),
 276                               G_SIGNAL_RUN_FIRST,
 277                               G_STRUCT_OFFSET (ModestWebkitMimePartViewClass,stop_streams),
 278                               NULL, NULL,
 279                               g_cclosure_marshal_VOID__VOID,
 280                               G_TYPE_NONE, 0);
 281
 282         signals[LIMIT_ERROR_SIGNAL] =
 283                 g_signal_new ("limit-error",
 284                               G_TYPE_FROM_CLASS (gobject_class),
 285                               G_SIGNAL_RUN_FIRST,
 286                               G_STRUCT_OFFSET (ModestWebkitMimePartViewClass,limit_error),
 287                               NULL, NULL,
 288                               g_cclosure_marshal_VOID__VOID,
 289                               G_TYPE_NONE, 0);
 290
 291 }
 292
 293 static void
 294 modest_webkit_mime_part_view_init (ModestWebkitMimePartView *self)
 295 {
 296         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 297         GdkColor base;
 298         GdkColor text;
 299         WebKitWebSettings *settings;
 300
 301         gdk_color_parse ("#fff", &base);
 302         gdk_color_parse ("#000", &text);
 303         gtk_widget_modify_base (GTK_WIDGET (self), GTK_STATE_NORMAL, &base);
 304         gtk_widget_modify_text (GTK_WIDGET (self), GTK_STATE_NORMAL, &text);
 305
 306         priv->sighandlers = NULL;
 307
 308         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 309                                                        G_OBJECT(self), "notify::style",
 310                                                        G_CALLBACK (on_notify_style), (gpointer) self);
 311         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 312                                                        G_OBJECT (self), "resource-request-starting",
 313                                                        G_CALLBACK (on_resource_request_starting), (gpointer) self);
 314         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 315                                                        G_OBJECT (self), "navigation-policy-decision-requested",
 316                                                        G_CALLBACK (on_navigation_policy_decision_requested), (gpointer) self);
 317         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 318                                                        G_OBJECT (self), "new-window-policy-decision-requested",
 319                                                        G_CALLBACK (on_new_window_policy_decision_requested), (gpointer) self);
 320         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 321                                                        G_OBJECT (self), "navigation-requested",
 322                                                        G_CALLBACK (on_navigation_requested), (gpointer) self);
 323
 324         priv->part = NULL;
 325         priv->current_zoom = 1.0;
 326         priv->view_images = FALSE;
 327         priv->has_external_images = FALSE;
 328
 329         settings = webkit_web_settings_new ();
 330         g_object_set (G_OBJECT (settings),
 331                       "auto-load-images", FALSE,
 332                       "enable-html5-database", FALSE,
 333                       "enable-html5-local-storage", FALSE,
 334                       "enable-offline-web-application-cache", FALSE,
 335                       "enable-plugins", FALSE,
 336                       "enable-private-browsing", TRUE,
 337                       "enable-scripts", FALSE,
 338                       NULL);
 339         webkit_web_view_set_settings (WEBKIT_WEB_VIEW (self), settings);
 340         g_object_unref (settings);
 341         g_object_set (G_OBJECT (self),
 342                       "editable", FALSE,
 343                       NULL);
 344 }
 345
 346 static void
 347 modest_webkit_mime_part_view_finalize (GObject *obj)
 348 {
 349         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 350
 351         modest_signal_mgr_disconnect_all_and_destroy (priv->sighandlers);
 352         priv->sighandlers = NULL;
 353
 354         G_OBJECT_CLASS (parent_class)->finalize (obj);
 355 }
 356
 357 static void
 358 modest_webkit_mime_part_view_dispose (GObject *obj)
 359 {
 360         ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (obj);
 361
 362         g_signal_emit (G_OBJECT (obj), signals[STOP_STREAMS_SIGNAL], 0);
 363
 364         if (priv->part) {
 365                 g_object_unref (priv->part);
 366                 priv->part = NULL;
 367         }
 368
 369         G_OBJECT_CLASS (parent_class)->dispose (obj);
 370 }
 371
 372 /* WEBKIT SIGNALS HANDLERS */
 373
 374 static WebKitNavigationResponse
 375 on_navigation_requested                      (WebKitWebView        *web_view,
 376                                               WebKitWebFrame       *frame,
 377                                               WebKitNetworkRequest *request,
 378                                               gpointer              user_data)
 379 {
 380         const gchar *uri;
 381
 382         uri = webkit_network_request_get_uri (request);
 383         if (g_strcmp0 (uri, "about:blank") == 0) {
 384                 return WEBKIT_NAVIGATION_RESPONSE_ACCEPT;
 385         } else if (g_str_has_prefix (uri, "cid:") == 0) {
 386                 return WEBKIT_NAVIGATION_RESPONSE_DOWNLOAD;
 387         } else {
 388                 return WEBKIT_NAVIGATION_RESPONSE_ACCEPT;
 389         }
 390 }
 391
 392 static void
 393 on_resource_request_starting (WebKitWebView *webview,
 394                               WebKitWebFrame *frame,
 395                               WebKitWebResource *resource,
 396                               WebKitNetworkRequest *request,
 397                               WebKitNetworkResponse *response,
 398                               gpointer userdata)
 399 {
 400         ModestWebkitMimePartView *self = (ModestWebkitMimePartView *) userdata;
 401         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 402
 403         if (g_str_has_prefix (webkit_network_request_get_uri (request), "http:")) {
 404                 ModestWebkitMimePartViewPrivate *priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 405
 406                 if (!priv->view_images)
 407                         priv->has_external_images = TRUE;
 408         }
 409
 410         webkit_network_request_set_uri (request, "about:blank");
 411 }
 412
 413 static gboolean
 414 on_navigation_policy_decision_requested (WebKitWebView             *web_view,
 415                                          WebKitWebFrame            *frame,
 416                                          WebKitNetworkRequest      *request,
 417                                          WebKitWebNavigationAction *navigation_action,
 418                                          WebKitWebPolicyDecision   *policy_decision,
 419                                          gpointer                   user_data)
 420 {
 421         WebKitWebNavigationReason reason;
 422         reason = webkit_web_navigation_action_get_reason (navigation_action);
 423         if (reason == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
 424                 const gchar *uri;
 425                 gboolean result;
 426
 427                 webkit_web_policy_decision_ignore (policy_decision);
 428                 uri = webkit_network_request_get_uri (WEBKIT_NETWORK_REQUEST (request));
 429                 g_signal_emit_by_name (G_OBJECT (user_data), "activate-link", uri, &result);
 430
 431                 return TRUE;
 432         } else if (reason != WEBKIT_WEB_NAVIGATION_REASON_OTHER) {
 433                 webkit_web_policy_decision_ignore (policy_decision);
 434                 return TRUE;
 435         }
 436         return FALSE;
 437 }
 438
 439 static gboolean
 440 on_new_window_policy_decision_requested (WebKitWebView             *web_view,
 441                                          WebKitWebFrame            *frame,
 442                                          WebKitNetworkRequest      *request,
 443                                          WebKitWebNavigationAction *navigation_action,
 444                                          WebKitWebPolicyDecision   *policy_decision,
 445                                          gpointer                   user_data)
 446 {
 447         WebKitWebNavigationReason reason;
 448         reason = webkit_web_navigation_action_get_reason (navigation_action);
 449         if (reason == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
 450                 const gchar *uri;
 451                 gboolean result;
 452
 453                 webkit_web_policy_decision_ignore (policy_decision);
 454                 uri = webkit_network_request_get_uri (WEBKIT_NETWORK_REQUEST (request));
 455                 g_signal_emit_by_name (G_OBJECT (user_data), "activate-link", uri, &result);
 456
 457                 return TRUE;
 458         } else if (reason != WEBKIT_WEB_NAVIGATION_REASON_OTHER) {
 459                 webkit_web_policy_decision_ignore (policy_decision);
 460                 return TRUE;
 461         }
 462         return FALSE;
 463 }
 464
 465 static void
 466 on_notify_style (GObject *obj, GParamSpec *spec, gpointer userdata)
 467 {
 468         if (strcmp ("style", spec->name) == 0) {
 469                 g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc) update_style,
 470                                  g_object_ref (obj), g_object_unref);
 471                 gtk_widget_queue_draw (GTK_WIDGET (obj));
 472         }
 473 }
 474
 475 gboolean
 476 same_color (GdkColor *a, GdkColor *b)
 477 {
 478         return ((a->red == b->red) &&
 479                 (a->green == b->green) &&
 480                 (a->blue == b->blue));
 481 }
 482
 483 static gboolean
 484 update_style (ModestWebkitMimePartView *self)
 485 {
 486         GdkColor base;
 487         GdkColor text;
 488         GtkRcStyle *rc_style;
 489
 490         gdk_threads_enter ();
 491
 492         if (GTK_WIDGET_VISIBLE (self)) {
 493                 rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (self));
 494
 495                 gdk_color_parse ("#fff", &base);
 496                 gdk_color_parse ("#000", &text);
 497
 498                 if (!same_color (&(rc_style->base[GTK_STATE_NORMAL]), &base) &&
 499                     !same_color (&(rc_style->text[GTK_STATE_NORMAL]), &text)) {
 500
 501                         rc_style->base[GTK_STATE_NORMAL] = base;
 502                         rc_style->text[GTK_STATE_NORMAL] = text;
 503                         gtk_widget_modify_style (GTK_WIDGET (self), rc_style);
 504                 }
 505         }
 506
 507         gdk_threads_leave ();
 508
 509         return FALSE;
 510 }
 511
 512
 513 /* INTERNAL API */
 514 static void
 515 decode_to_stream_cb (TnyMimePart *self,
 516                      gboolean cancelled,
 517                      TnyStream *stream,
 518                      GError *err,
 519                      gpointer user_data)
 520 {
 521         ModestWebkitMimePartView *view = (ModestWebkitMimePartView *) user_data;
 522
 523         if (MODEST_IS_STREAM_TEXT_TO_HTML (stream)) {
 524                 if (tny_stream_write (stream, "\n", 1) == -1) {
 525                         g_warning ("failed to write CR in %s", __FUNCTION__);
 526                 }
 527                 if (modest_stream_text_to_html_limit_reached (MODEST_STREAM_TEXT_TO_HTML (stream))) {
 528                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 529                 }
 530                 tny_stream_reset (stream);
 531         } else {
 532                 if (modest_tny_stream_webkit_limit_reached (MODEST_TNY_STREAM_WEBKIT (stream))) {
 533                         g_signal_emit (G_OBJECT (view), signals[LIMIT_ERROR_SIGNAL], 0);
 534                 }
 535         }
 536         tny_stream_close (stream);
 537 }
 538
 539 static void
 540 set_html_part (ModestWebkitMimePartView *self, TnyMimePart *part, const gchar *encoding)
 541 {
 542         TnyStream *tny_stream;
 543
 544         g_return_if_fail (self);
 545         g_return_if_fail (part);
 546
 547         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 548
 549         tny_stream     = TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", encoding));
 550         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 551         tny_stream_reset (tny_stream);
 552
 553         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 554                                               tny_stream, decode_to_stream_cb,
 555                                               NULL, self);
 556         g_object_unref (tny_stream);
 557 }
 558
 559 static void
 560 set_text_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 561 {
 562         TnyStream* text_to_html_stream, *tny_stream;
 563
 564         g_return_if_fail (self);
 565         g_return_if_fail (part);
 566
 567         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 568
 569         tny_stream =  TNY_STREAM(modest_tny_stream_webkit_new (WEBKIT_WEB_VIEW (self), "text/html", "utf-8"));
 570         modest_tny_stream_webkit_set_max_size (MODEST_TNY_STREAM_WEBKIT (tny_stream), 128*1024);
 571         text_to_html_stream = TNY_STREAM (modest_stream_text_to_html_new (tny_stream));
 572         modest_stream_text_to_html_set_linkify_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 573                                                       64*1024);
 574         modest_stream_text_to_html_set_full_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 575                                                    128*1024);
 576         modest_stream_text_to_html_set_line_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream),
 577                                                    1024);
 578
 579         tny_mime_part_decode_to_stream_async (TNY_MIME_PART (part),
 580                                               text_to_html_stream, decode_to_stream_cb,
 581                                               NULL, self);
 582
 583         g_object_unref (G_OBJECT(text_to_html_stream));
 584         g_object_unref (G_OBJECT(tny_stream));
 585 }
 586
 587 static void
 588 set_empty_part (ModestWebkitMimePartView *self)
 589 {
 590         g_return_if_fail (self);
 591
 592         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 593         webkit_web_view_load_string (WEBKIT_WEB_VIEW (self), "", "text/plain", "utf-8", NULL);
 594 }
 595
 596 static void
 597 set_part (ModestWebkitMimePartView *self, TnyMimePart *part)
 598 {
 599         ModestWebkitMimePartViewPrivate *priv;
 600         gchar *header_content_type, *header_content_type_lower;
 601         const gchar *tmp;
 602         gchar *charset = NULL;
 603
 604         g_return_if_fail (self);
 605
 606         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self);
 607         priv->has_external_images = FALSE;
 608
 609         if (part != priv->part) {
 610                 if (priv->part)
 611                         g_object_unref (G_OBJECT(priv->part));
 612                 if (part)
 613                         g_object_ref   (G_OBJECT(part));
 614                 priv->part = part;
 615         }
 616
 617         if (!part) {
 618                 set_empty_part (self);
 619                 return;
 620         }
 621
 622         header_content_type = modest_tny_mime_part_get_header_value (part, "Content-Type");
 623         if (header_content_type) {
 624                 header_content_type = g_strstrip (header_content_type);
 625                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 626         } else {
 627                 header_content_type_lower = NULL;
 628         }
 629
 630         if (header_content_type_lower) {
 631                 tmp = strstr (header_content_type_lower, "charset=");
 632                 if (tmp) {
 633                         const gchar *tmp2;
 634                         tmp = tmp + strlen ("charset=");
 635
 636                         tmp2 = strstr (tmp, ";");
 637                         if (tmp2) {
 638                                 charset = g_strndup (tmp, tmp2-tmp);
 639                         } else {
 640                                 charset = g_strdup (tmp);
 641                         }
 642                 }
 643         }
 644
 645         if (tny_mime_part_content_type_is (part, "text/html")) {
 646                 set_html_part (self, part, charset);
 647         } else {
 648                 if (tny_mime_part_content_type_is (part, "message/rfc822")) {
 649                         if (header_content_type) {
 650                                 if (g_str_has_prefix (header_content_type_lower, "text/html"))
 651                                         set_html_part (self, part, charset);
 652                                 else
 653                                         set_text_part (self, part);
 654
 655                         } else {
 656                                 set_text_part (self, part);
 657                         }
 658                 } else {
 659                         set_text_part (self, part);
 660                 }
 661         }
 662         g_free (header_content_type_lower);
 663         g_free (header_content_type);
 664
 665 }
 666
 667 static TnyMimePart*
 668 get_part (ModestWebkitMimePartView *self)
 669 {
 670         TnyMimePart *part;
 671
 672         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), NULL);
 673
 674         part = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE(self)->part;
 675
 676         if (part)
 677                 g_object_ref (part);
 678
 679         return part;
 680 }
 681
 682 static gboolean
 683 is_empty   (ModestWebkitMimePartView *self)
 684 {
 685         return FALSE;
 686 }
 687
 688 static gboolean
 689 get_view_images   (ModestWebkitMimePartView *self)
 690 {
 691         ModestWebkitMimePartViewPrivate *priv;
 692
 693         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 694
 695         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 696         return priv->view_images;
 697 }
 698
 699 static void
 700 set_view_images   (ModestWebkitMimePartView *self, gboolean view_images)
 701 {
 702         ModestWebkitMimePartViewPrivate *priv;
 703
 704         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 705
 706         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 707         priv->view_images = view_images;
 708 }
 709
 710 static gboolean
 711 has_external_images   (ModestWebkitMimePartView *self)
 712 {
 713         ModestWebkitMimePartViewPrivate *priv;
 714
 715         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), FALSE);
 716
 717         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 718         return priv->has_external_images;
 719 }
 720
 721 static void
 722 set_zoom (ModestWebkitMimePartView *self, gdouble zoom)
 723 {
 724         ModestWebkitMimePartViewPrivate *priv;
 725
 726         g_return_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self));
 727
 728         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 729         priv->current_zoom = zoom;
 730
 731         gtk_widget_queue_resize (GTK_WIDGET (self));
 732 }
 733
 734 static gdouble
 735 get_zoom (ModestWebkitMimePartView *self)
 736 {
 737         ModestWebkitMimePartViewPrivate *priv;
 738
 739         g_return_val_if_fail (MODEST_IS_WEBKIT_MIME_PART_VIEW (self), 1.0);
 740
 741         priv = MODEST_WEBKIT_MIME_PART_VIEW_GET_PRIVATE (self);
 742
 743         return priv->current_zoom;
 744 }
 745
 746 static gboolean
 747 search (ModestWebkitMimePartView *self,
 748         const gchar *string)
 749 {
 750         return FALSE;
 751 }
 752
 753 static gboolean
 754 search_next (ModestWebkitMimePartView *self)
 755 {
 756         return FALSE;
 757 }
 758
 759 static gboolean
 760 get_selection_area (ModestWebkitMimePartView *self,
 761                     gint *x, gint *y,
 762                     gint *width, gint *height)
 763 {
 764         return FALSE;
 765 }
 766
 767
 768 /* TNY MIME PART IMPLEMENTATION */
 769
 770 static void
 771 tny_mime_part_view_init (gpointer g, gpointer iface_data)
 772 {
 773         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
 774
 775         klass->get_part = modest_webkit_mime_part_view_get_part;
 776         klass->set_part = modest_webkit_mime_part_view_set_part;
 777         klass->clear = modest_webkit_mime_part_view_clear;
 778
 779         return;
 780 }
 781
 782 static TnyMimePart*
 783 modest_webkit_mime_part_view_get_part (TnyMimePartView *self)
 784 {
 785         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_part_func (self);
 786 }
 787
 788
 789 static TnyMimePart*
 790 modest_webkit_mime_part_view_get_part_default (TnyMimePartView *self)
 791 {
 792         return TNY_MIME_PART (get_part (MODEST_WEBKIT_MIME_PART_VIEW (self)));
 793 }
 794
 795 static void
 796 modest_webkit_mime_part_view_set_part (TnyMimePartView *self,
 797                                         TnyMimePart *part)
 798 {
 799         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_part_func (self, part);
 800 }
 801
 802 static void
 803 modest_webkit_mime_part_view_set_part_default (TnyMimePartView *self,
 804                                                 TnyMimePart *part)
 805 {
 806         g_return_if_fail ((part == NULL) || TNY_IS_MIME_PART (part));
 807
 808         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), part);
 809 }
 810
 811 static void
 812 modest_webkit_mime_part_view_clear (TnyMimePartView *self)
 813 {
 814         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->clear_func (self);
 815 }
 816
 817 static void
 818 modest_webkit_mime_part_view_clear_default (TnyMimePartView *self)
 819 {
 820         set_part (MODEST_WEBKIT_MIME_PART_VIEW (self), NULL);
 821 }
 822
 823 /* MODEST MIME PART VIEW IMPLEMENTATION */
 824
 825 static void
 826 modest_mime_part_view_init (gpointer g, gpointer iface_data)
 827 {
 828         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
 829
 830         klass->is_empty_func = modest_webkit_mime_part_view_is_empty;
 831         klass->get_view_images_func = modest_webkit_mime_part_view_get_view_images;
 832         klass->set_view_images_func = modest_webkit_mime_part_view_set_view_images;
 833         klass->has_external_images_func = modest_webkit_mime_part_view_has_external_images;
 834
 835         return;
 836 }
 837
 838 static gboolean
 839 modest_webkit_mime_part_view_is_empty (ModestMimePartView *self)
 840 {
 841         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->is_empty_func (self);
 842 }
 843
 844 static gboolean
 845 modest_webkit_mime_part_view_get_view_images (ModestMimePartView *self)
 846 {
 847         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_view_images_func (self);
 848 }
 849
 850 static void
 851 modest_webkit_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images)
 852 {
 853         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_view_images_func (self, view_images);
 854 }
 855
 856 static gboolean
 857 modest_webkit_mime_part_view_has_external_images (ModestMimePartView *self)
 858 {
 859         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->has_external_images_func (self);
 860 }
 861
 862 static gboolean
 863 modest_webkit_mime_part_view_is_empty_default (ModestMimePartView *self)
 864 {
 865         return is_empty (MODEST_WEBKIT_MIME_PART_VIEW (self));
 866 }
 867
 868 static gboolean
 869 modest_webkit_mime_part_view_get_view_images_default (ModestMimePartView *self)
 870 {
 871         return get_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 872 }
 873
 874 static void
 875 modest_webkit_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images)
 876 {
 877         set_view_images (MODEST_WEBKIT_MIME_PART_VIEW (self), view_images);
 878 }
 879
 880 static gboolean
 881 modest_webkit_mime_part_view_has_external_images_default (ModestMimePartView *self)
 882 {
 883         return has_external_images (MODEST_WEBKIT_MIME_PART_VIEW (self));
 884 }
 885
 886
 887 /* MODEST ZOOMABLE IMPLEMENTATION */
 888 static void
 889 modest_zoomable_init (gpointer g, gpointer iface_data)
 890 {
 891         ModestZoomableIface *klass = (ModestZoomableIface *)g;
 892
 893         klass->get_zoom_func = modest_webkit_mime_part_view_get_zoom;
 894         klass->set_zoom_func = modest_webkit_mime_part_view_set_zoom;
 895         klass->zoom_minus_func = modest_webkit_mime_part_view_zoom_minus;
 896         klass->zoom_plus_func = modest_webkit_mime_part_view_zoom_plus;
 897
 898         return;
 899 }
 900
 901 static gdouble
 902 modest_webkit_mime_part_view_get_zoom (ModestZoomable *self)
 903 {
 904         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_zoom_func (self);
 905 }
 906
 907 static gdouble
 908 modest_webkit_mime_part_view_get_zoom_default (ModestZoomable *self)
 909 {
 910         return get_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self));
 911 }
 912
 913 static void
 914 modest_webkit_mime_part_view_set_zoom (ModestZoomable *self, gdouble value)
 915 {
 916         MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
 917 }
 918
 919 static void
 920 modest_webkit_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value)
 921 {
 922         set_zoom (MODEST_WEBKIT_MIME_PART_VIEW (self), value);
 923 }
 924
 925 static gboolean
 926 modest_webkit_mime_part_view_zoom_minus (ModestZoomable *self)
 927 {
 928         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_minus_func (self);
 929 }
 930
 931 static gboolean
 932 modest_webkit_mime_part_view_zoom_minus_default (ModestZoomable *self)
 933 {
 934         /* operation not supported in ModestWebkitMimePartView */
 935         return FALSE;
 936 }
 937
 938 static gboolean
 939 modest_webkit_mime_part_view_zoom_plus (ModestZoomable *self)
 940 {
 941         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->zoom_plus_func (self);
 942 }
 943
 944 static gboolean
 945 modest_webkit_mime_part_view_zoom_plus_default (ModestZoomable *self)
 946 {
 947         /* operation not supported in ModestWebkitMimePartView */
 948         return FALSE;
 949 }
 950
 951 /* ISEARCH VIEW IMPLEMENTATION */
 952 static void
 953 modest_isearch_view_init (gpointer g, gpointer iface_data)
 954 {
 955         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
 956
 957         klass->search_func = modest_webkit_mime_part_view_search;
 958         klass->search_next_func = modest_webkit_mime_part_view_search_next;
 959         klass->get_selection_area_func = modest_webkit_mime_part_view_get_selection_area;
 960
 961         return;
 962 }
 963
 964 static gboolean
 965 modest_webkit_mime_part_view_search (ModestISearchView *self, const gchar *string)
 966 {
 967         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_func (self, string);
 968 }
 969
 970 static gboolean
 971 modest_webkit_mime_part_view_search_default (ModestISearchView *self, const gchar *string)
 972 {
 973         return search (MODEST_WEBKIT_MIME_PART_VIEW (self), string);
 974 }
 975
 976 static gboolean
 977 modest_webkit_mime_part_view_search_next(ModestISearchView *self)
 978 {
 979         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->search_next_func (self);
 980 }
 981
 982 static gboolean
 983 modest_webkit_mime_part_view_search_next_default (ModestISearchView *self)
 984 {
 985         return search_next (MODEST_WEBKIT_MIME_PART_VIEW (self));
 986 }
 987
 988 static gboolean
 989 modest_webkit_mime_part_view_get_selection_area (ModestISearchView *self, gint *x, gint *y,
 990                                                   gint *width, gint *height)
 991 {
 992         return MODEST_WEBKIT_MIME_PART_VIEW_GET_CLASS (self)->get_selection_area_func (self, x, y, width, height);
 993 }
 994
 995 static gboolean
 996 modest_webkit_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 997                                                           gint *width, gint *height)
 998 {
 999         return get_selection_area (MODEST_WEBKIT_MIME_PART_VIEW (self), x, y, width, height);
1000 }