git.maemo.org Git - modest/blob - src/widgets/modest-gtkhtml-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-gtkhtml-mime-part-view.h>
  32 #include <string.h>
  33 #include <gtkhtml/gtkhtml-stream.h>
  34 #include <gtkhtml/gtkhtml-search.h>
  35 #include <tny-stream.h>
  36 #include <tny-mime-part-view.h>
  37 #include "modest-tny-mime-part.h"
  38 #include <modest-stream-text-to-html.h>
  39 #include <modest-text-utils.h>
  40 #include <modest-conf.h>
  41 #include <modest-runtime.h>
  42 #include <widgets/modest-mime-part-view.h>
  43 #include <widgets/modest-zoomable.h>
  44 #include <widgets/modest-tny-stream-gtkhtml.h>
  45 #include <libgnomevfs/gnome-vfs.h>
  46 #include <gdk/gdkkeysyms.h>
  47 #include <modest-ui-constants.h>
  48
  49 /* gobject structure methods */
  50 static void    modest_gtkhtml_mime_part_view_class_init (ModestGtkhtmlMimePartViewClass *klass);
  51 static void    tny_mime_part_view_init                  (gpointer g, gpointer iface_data);
  52 static void    modest_mime_part_view_init               (gpointer g, gpointer iface_data);
  53 static void    modest_zoomable_init                     (gpointer g, gpointer iface_data);
  54 static void    modest_isearch_view_init                 (gpointer g, gpointer iface_data);
  55 static void    modest_gtkhtml_mime_part_view_init       (ModestGtkhtmlMimePartView *self);
  56 static void    modest_gtkhtml_mime_part_view_finalize   (GObject *self);
  57 static void    modest_gtkhtml_mime_part_view_dispose    (GObject *self);
  58
  59 /* GtkHTML signal handlers */
  60 static gboolean  on_link_clicked  (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self);
  61 static gboolean  on_url           (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self);
  62 static gboolean  on_url_requested (GtkWidget *widget, const gchar *uri, GtkHTMLStream *stream,
  63                                    ModestGtkhtmlMimePartView *self);
  64 static void      on_notify_style  (GObject *obj, GParamSpec *spec, gpointer userdata);
  65 static gboolean  update_style     (ModestGtkhtmlMimePartView *self);
  66 /* TnyMimePartView implementation */
  67 static void modest_gtkhtml_mime_part_view_clear (TnyMimePartView *self);
  68 static void modest_gtkhtml_mime_part_view_clear_default (TnyMimePartView *self);
  69 static void modest_gtkhtml_mime_part_view_set_part (TnyMimePartView *self, TnyMimePart *part);
  70 static void modest_gtkhtml_mime_part_view_set_part_default (TnyMimePartView *self, TnyMimePart *part);
  71 static TnyMimePart* modest_gtkhtml_mime_part_view_get_part (TnyMimePartView *self);
  72 static TnyMimePart* modest_gtkhtml_mime_part_view_get_part_default (TnyMimePartView *self);
  73 /* ModestMimePartView implementation */
  74 static gboolean modest_gtkhtml_mime_part_view_is_empty (ModestMimePartView *self);
  75 static gboolean modest_gtkhtml_mime_part_view_is_empty_default (ModestMimePartView *self);
  76 static gboolean modest_gtkhtml_mime_part_view_get_view_images (ModestMimePartView *self);
  77 static gboolean modest_gtkhtml_mime_part_view_get_view_images_default (ModestMimePartView *self);
  78 static void     modest_gtkhtml_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images);
  79 static void     modest_gtkhtml_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images);
  80 static gboolean modest_gtkhtml_mime_part_view_has_external_images (ModestMimePartView *self);
  81 static gboolean modest_gtkhtml_mime_part_view_has_external_images_default (ModestMimePartView *self);
  82 /* ModestZoomable implementation */
  83 static gdouble modest_gtkhtml_mime_part_view_get_zoom (ModestZoomable *self);
  84 static void modest_gtkhtml_mime_part_view_set_zoom (ModestZoomable *self, gdouble value);
  85 static gboolean modest_gtkhtml_mime_part_view_zoom_minus (ModestZoomable *self);
  86 static gboolean modest_gtkhtml_mime_part_view_zoom_plus (ModestZoomable *self);
  87 static gdouble modest_gtkhtml_mime_part_view_get_zoom_default (ModestZoomable *self);
  88 static void modest_gtkhtml_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value);
  89 static gboolean modest_gtkhtml_mime_part_view_zoom_minus_default (ModestZoomable *self);
  90 static gboolean modest_gtkhtml_mime_part_view_zoom_plus_default (ModestZoomable *self);
  91 /* ModestISearchView implementation */
  92 static gboolean modest_gtkhtml_mime_part_view_search                    (ModestISearchView *self, const gchar *string);
  93 static gboolean modest_gtkhtml_mime_part_view_search_next               (ModestISearchView *self);
  94 static gboolean modest_gtkhtml_mime_part_view_get_selection_area        (ModestISearchView *self, gint *x, gint *y,
  95                                                                          gint *width, gint *height);
  96 static gboolean modest_gtkhtml_mime_part_view_search_default            (ModestISearchView *self, const gchar *string);
  97 static gboolean modest_gtkhtml_mime_part_view_search_next_default       (ModestISearchView *self);
  98 static gboolean modest_gtkhtml_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
  99                                                                           gint *width, gint *height);
 100
 101
 102 /* internal api */
 103 static TnyMimePart  *get_part   (ModestGtkhtmlMimePartView *self);
 104 static void          set_html_part   (ModestGtkhtmlMimePartView *self, TnyMimePart *part);
 105 static void          set_text_part   (ModestGtkhtmlMimePartView *self, TnyMimePart *part);
 106 static void          set_empty_part  (ModestGtkhtmlMimePartView *self);
 107 static void          set_part   (ModestGtkhtmlMimePartView *self, TnyMimePart *part);
 108 static gboolean      is_empty   (ModestGtkhtmlMimePartView *self);
 109 static gboolean      get_view_images   (ModestGtkhtmlMimePartView *self);
 110 static void          set_view_images   (ModestGtkhtmlMimePartView *self, gboolean view_images);
 111 static gboolean      has_external_images   (ModestGtkhtmlMimePartView *self);
 112 static void          set_zoom   (ModestGtkhtmlMimePartView *self, gdouble zoom);
 113 static gdouble       get_zoom   (ModestGtkhtmlMimePartView *self);
 114 static gboolean      has_contents_receiver (gpointer engine, const gchar *data,
 115                                             size_t len, gboolean *has_contents);
 116 static gboolean      search             (ModestGtkhtmlMimePartView *self, const gchar *string);
 117 static gboolean      search_next        (ModestGtkhtmlMimePartView *self);
 118 static gboolean      get_selection_area (ModestGtkhtmlMimePartView *self, gint *x, gint *y,
 119                                          gint *width, gint *height);
 120
 121 typedef struct _ModestGtkhtmlMimePartViewPrivate ModestGtkhtmlMimePartViewPrivate;
 122 struct _ModestGtkhtmlMimePartViewPrivate {
 123         TnyMimePart *part;
 124         gdouble current_zoom;
 125         gboolean view_images;
 126         gboolean has_external_images;
 127         GSList *sighandlers;
 128 };
 129
 130 #define MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 131                                                                                        MODEST_TYPE_GTKHTML_MIME_PART_VIEW, \
 132                                                                                        ModestGtkhtmlMimePartViewPrivate))
 133
 134 enum {
 135         STOP_STREAMS_SIGNAL,
 136         LAST_SIGNAL
 137 };
 138
 139 static GtkHTMLClass *parent_class = NULL;
 140
 141 static guint signals[LAST_SIGNAL] = {0};
 142
 143 GtkWidget *
 144 modest_gtkhtml_mime_part_view_new ()
 145 {
 146         return g_object_new (MODEST_TYPE_GTKHTML_MIME_PART_VIEW, NULL);
 147 }
 148
 149 /* GOBJECT IMPLEMENTATION */
 150 GType
 151 modest_gtkhtml_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(ModestGtkhtmlMimePartViewClass),
 157                         NULL,           /* base init */
 158                         NULL,           /* base finalize */
 159                         (GClassInitFunc) modest_gtkhtml_mime_part_view_class_init,
 160                         NULL,           /* class finalize */
 161                         NULL,           /* class data */
 162                         sizeof(ModestGtkhtmlMimePartView),
 163                         1,              /* n_preallocs */
 164                         (GInstanceInitFunc) modest_gtkhtml_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 (GTK_TYPE_HTML,
 197                                                   "ModestGtkhtmlMimePartView",
 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_gtkhtml_mime_part_view_class_init (ModestGtkhtmlMimePartViewClass *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_gtkhtml_mime_part_view_dispose;
 224         gobject_class->finalize = modest_gtkhtml_mime_part_view_finalize;
 225
 226         klass->get_part_func = modest_gtkhtml_mime_part_view_get_part_default;
 227         klass->set_part_func = modest_gtkhtml_mime_part_view_set_part_default;
 228         klass->clear_func = modest_gtkhtml_mime_part_view_clear_default;
 229         klass->is_empty_func = modest_gtkhtml_mime_part_view_is_empty_default;
 230         klass->get_view_images_func = modest_gtkhtml_mime_part_view_get_view_images_default;
 231         klass->set_view_images_func = modest_gtkhtml_mime_part_view_set_view_images_default;
 232         klass->has_external_images_func = modest_gtkhtml_mime_part_view_has_external_images_default;
 233         klass->get_zoom_func = modest_gtkhtml_mime_part_view_get_zoom_default;
 234         klass->set_zoom_func = modest_gtkhtml_mime_part_view_set_zoom_default;
 235         klass->zoom_minus_func = modest_gtkhtml_mime_part_view_zoom_minus_default;
 236         klass->zoom_plus_func = modest_gtkhtml_mime_part_view_zoom_plus_default;
 237         klass->search_func = modest_gtkhtml_mime_part_view_search_default;
 238         klass->search_next_func = modest_gtkhtml_mime_part_view_search_next_default;
 239         klass->get_selection_area_func = modest_gtkhtml_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(ModestGtkhtmlMimePartViewPrivate));
 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 (ModestGtkhtmlMimePartViewClass,stop_streams),
 262                               NULL, NULL,
 263                               g_cclosure_marshal_VOID__VOID,
 264                               G_TYPE_NONE, 0);
 265
 266 }
 267
 268 static void
 269 modest_gtkhtml_mime_part_view_init (ModestGtkhtmlMimePartView *self)
 270 {
 271         ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 272         GdkColor base;
 273         GdkColor text;
 274
 275         gtk_html_set_editable        (GTK_HTML(self), FALSE);
 276         gtk_html_allow_selection     (GTK_HTML(self), TRUE);
 277         gtk_html_set_caret_mode      (GTK_HTML(self), FALSE);
 278         gtk_html_set_blocking        (GTK_HTML(self), TRUE);
 279         gtk_html_set_images_blocking (GTK_HTML(self), TRUE);
 280         gtk_container_set_border_width (GTK_CONTAINER (self), MODEST_MARGIN_DEFAULT);
 281
 282         gdk_color_parse ("#fff", &base);
 283         gdk_color_parse ("#000", &text);
 284         gtk_widget_modify_base (GTK_WIDGET (self), GTK_STATE_NORMAL, &base);
 285         gtk_widget_modify_text (GTK_WIDGET (self), GTK_STATE_NORMAL, &text);
 286
 287         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 288                                                        G_OBJECT(self), "link_clicked",
 289                                                        G_CALLBACK(on_link_clicked), self);
 290         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 291                                                        G_OBJECT(self), "url_requested",
 292                                                        G_CALLBACK(on_url_requested), self);
 293         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 294                                                        G_OBJECT(self), "on_url",
 295                                                        G_CALLBACK(on_url), self);
 296         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 297                                                        G_OBJECT(self), "notify::style",
 298                                                        G_CALLBACK (on_notify_style), (gpointer) self);
 299
 300         priv->part = NULL;
 301         priv->current_zoom = 1.0;
 302         priv->view_images = FALSE;
 303         priv->has_external_images = FALSE;
 304 }
 305
 306 static void
 307 modest_gtkhtml_mime_part_view_finalize (GObject *obj)
 308 {
 309         ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (obj);
 310
 311         modest_signal_mgr_disconnect_all_and_destroy (priv->sighandlers);
 312         priv->sighandlers = NULL;
 313
 314         G_OBJECT_CLASS (parent_class)->finalize (obj);
 315 }
 316
 317 static void
 318 modest_gtkhtml_mime_part_view_dispose (GObject *obj)
 319 {
 320         ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (obj);
 321
 322         g_signal_emit (G_OBJECT (obj), signals[STOP_STREAMS_SIGNAL], 0);
 323
 324         if (priv->part) {
 325                 g_object_unref (priv->part);
 326                 priv->part = NULL;
 327         }
 328
 329         G_OBJECT_CLASS (parent_class)->dispose (obj);
 330 }
 331
 332 /* GTKHTML SIGNALS HANDLERS */
 333
 334 static void
 335 on_notify_style (GObject *obj, GParamSpec *spec, gpointer userdata)
 336 {
 337         if (strcmp ("style", spec->name) == 0) {
 338                 g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc) update_style,
 339                                  g_object_ref (obj), g_object_unref);
 340                 gtk_widget_queue_draw (GTK_WIDGET (obj));
 341         }
 342 }
 343
 344 gboolean
 345 same_color (GdkColor *a, GdkColor *b)
 346 {
 347         return ((a->red == b->red) &&
 348                 (a->green == b->green) &&
 349                 (a->blue == b->blue));
 350 }
 351
 352 static gboolean
 353 update_style (ModestGtkhtmlMimePartView *self)
 354 {
 355         GdkColor base;
 356         GdkColor text;
 357         GtkRcStyle *rc_style;
 358
 359         gdk_threads_enter ();
 360
 361         if (GTK_WIDGET_VISIBLE (self)) {
 362                 rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (self));
 363
 364                 gdk_color_parse ("#fff", &base);
 365                 gdk_color_parse ("#000", &text);
 366
 367                 if (!same_color (&(rc_style->base[GTK_STATE_NORMAL]), &base) &&
 368                     !same_color (&(rc_style->text[GTK_STATE_NORMAL]), &text)) {
 369
 370                         rc_style->base[GTK_STATE_NORMAL] = base;
 371                         rc_style->text[GTK_STATE_NORMAL] = text;
 372                         gtk_widget_modify_style (GTK_WIDGET (self), rc_style);
 373                 }
 374         }
 375
 376         gdk_threads_leave ();
 377
 378         return FALSE;
 379 }
 380
 381
 382
 383 static gboolean
 384 on_link_clicked (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self)
 385 {
 386         gboolean result;
 387         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 388
 389         g_signal_emit_by_name (G_OBJECT (self), "activate-link", uri, &result);
 390         return result;
 391 }
 392
 393 static gboolean
 394 on_url (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self)
 395 {
 396         gboolean result;
 397         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 398
 399         g_signal_emit_by_name (G_OBJECT (self), "link-hover", uri, &result);
 400         return result;
 401 }
 402
 403 typedef struct {
 404         gpointer buffer;
 405         GtkHTML *html;
 406         GtkHTMLStream *stream;
 407 } ImageFetcherInfo;
 408
 409 static gboolean
 410 on_url_requested (GtkWidget *widget, const gchar *uri, GtkHTMLStream *stream,
 411                   ModestGtkhtmlMimePartView *self)
 412 {
 413         gboolean result;
 414         TnyStream *tny_stream;
 415         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 416
 417         if (g_str_has_prefix (uri, "http:")) {
 418                 ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 419
 420                 if (!priv->view_images)
 421                         priv->has_external_images = TRUE;
 422         }
 423
 424         tny_stream = TNY_STREAM (modest_tny_stream_gtkhtml_new (stream, GTK_HTML (widget)));
 425         g_signal_emit_by_name (MODEST_MIME_PART_VIEW (self), "fetch-url", uri, tny_stream, &result);
 426         g_object_unref (tny_stream);
 427         return result;
 428 }
 429
 430 /* INTERNAL API */
 431
 432 static void
 433 set_html_part (ModestGtkhtmlMimePartView *self, TnyMimePart *part)
 434 {
 435         GtkHTMLStream *gtkhtml_stream;
 436         TnyStream *tny_stream;
 437
 438         g_return_if_fail (self);
 439         g_return_if_fail (part);
 440
 441         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 442
 443         gtkhtml_stream = gtk_html_begin(GTK_HTML(self));
 444
 445         tny_stream     = TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream, GTK_HTML (self)));
 446         tny_stream_reset (tny_stream);
 447
 448         tny_mime_part_decode_to_stream ((TnyMimePart*)part, tny_stream, NULL);
 449         tny_stream_close (tny_stream);
 450         g_object_unref (G_OBJECT(tny_stream));
 451 }
 452
 453 static void
 454 set_text_part (ModestGtkhtmlMimePartView *self, TnyMimePart *part)
 455 {
 456         TnyStream* text_to_html_stream, *tny_stream;
 457         GtkHTMLStream *gtkhtml_stream;
 458
 459         g_return_if_fail (self);
 460         g_return_if_fail (part);
 461
 462         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 463
 464         gtkhtml_stream = gtk_html_begin(GTK_HTML(self));
 465         tny_stream =  TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream, GTK_HTML (self)));
 466         text_to_html_stream = TNY_STREAM (modest_stream_text_to_html_new (tny_stream));
 467         modest_stream_text_to_html_set_linkify_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream), 64*1024);
 468         modest_stream_text_to_html_set_full_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream), 640*1024);
 469
 470         // FIXME: tinymail
 471         tny_mime_part_decode_to_stream ((TnyMimePart*)part, text_to_html_stream, NULL);
 472         tny_stream_write (text_to_html_stream, "\n", 1);
 473         tny_stream_reset (text_to_html_stream);
 474         tny_stream_close (text_to_html_stream);
 475
 476         g_object_unref (G_OBJECT(text_to_html_stream));
 477         g_object_unref (G_OBJECT(tny_stream));
 478         /* gtk_html_stream_destroy (gtkhtml_stream); */
 479 }
 480
 481 static void
 482 set_empty_part (ModestGtkhtmlMimePartView *self)
 483 {
 484         g_return_if_fail (self);
 485
 486         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 487
 488         gtk_html_load_from_string (GTK_HTML(self),
 489                                    "", 1);
 490 }
 491
 492 static void
 493 set_part (ModestGtkhtmlMimePartView *self, TnyMimePart *part)
 494 {
 495         ModestGtkhtmlMimePartViewPrivate *priv;
 496
 497         g_return_if_fail (self);
 498
 499         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE(self);
 500         priv->has_external_images = FALSE;
 501
 502         if (part != priv->part) {
 503                 if (priv->part)
 504                         g_object_unref (G_OBJECT(priv->part));
 505                 if (part)
 506                         g_object_ref   (G_OBJECT(part));
 507                 priv->part = part;
 508         }
 509
 510         if (!part) {
 511                 set_empty_part (self);
 512                 return;
 513         }
 514
 515         if (tny_mime_part_content_type_is (part, "text/html")) {
 516                 set_html_part (self, part);
 517         } else {
 518                 if (tny_mime_part_content_type_is (part, "message/rfc822")) {
 519                         gchar *header_content_type, *header_content_type_lower;
 520                         header_content_type = modest_tny_mime_part_get_header_value (part, "Content-Type");
 521                         if (header_content_type) {
 522                                 header_content_type = g_strstrip (header_content_type);
 523                                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 524
 525                                 if (!g_ascii_strcasecmp (header_content_type_lower, "text/html"))
 526                                         set_html_part (self, part);
 527                                 else
 528                                         set_text_part (self, part);
 529
 530                                 g_free (header_content_type_lower);
 531                                 g_free (header_content_type);
 532                         } else {
 533                                 set_text_part (self, part);
 534                         }
 535                 } else {
 536                         set_text_part (self, part);
 537                 }
 538         }
 539
 540 }
 541
 542 static TnyMimePart*
 543 get_part (ModestGtkhtmlMimePartView *self)
 544 {
 545         TnyMimePart *part;
 546
 547         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), NULL);
 548
 549         part = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE(self)->part;
 550
 551         if (part)
 552                 g_object_ref (part);
 553
 554         return part;
 555 }
 556
 557 static gboolean
 558 has_contents_receiver (gpointer engine, const gchar *data,
 559                        size_t len, gboolean *has_contents)
 560 {
 561         if (len > 1 || ((len == 1)&&(data[0]!='\n'))) {
 562                 *has_contents = TRUE;
 563                 return FALSE;
 564         }
 565         return TRUE;
 566 }
 567
 568 static gboolean
 569 is_empty   (ModestGtkhtmlMimePartView *self)
 570 {
 571         /* TODO: Find some gtkhtml API to check whether there is any (visible, non markup)
 572          * text in the message:
 573          */
 574         gboolean has_contents = FALSE;
 575
 576         gtk_html_export (GTK_HTML (self), "text/plain",
 577                          (GtkHTMLSaveReceiverFn) has_contents_receiver, &has_contents);
 578
 579         return !has_contents;
 580 }
 581
 582 static gboolean
 583 get_view_images   (ModestGtkhtmlMimePartView *self)
 584 {
 585         ModestGtkhtmlMimePartViewPrivate *priv;
 586
 587         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 588
 589         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 590         return priv->view_images;
 591 }
 592
 593 static void
 594 set_view_images   (ModestGtkhtmlMimePartView *self, gboolean view_images)
 595 {
 596         ModestGtkhtmlMimePartViewPrivate *priv;
 597
 598         g_return_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self));
 599
 600         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 601         priv->view_images = view_images;
 602 }
 603
 604 static gboolean
 605 has_external_images   (ModestGtkhtmlMimePartView *self)
 606 {
 607         ModestGtkhtmlMimePartViewPrivate *priv;
 608
 609         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 610
 611         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 612         return priv->has_external_images;
 613 }
 614
 615 static void
 616 set_zoom (ModestGtkhtmlMimePartView *self, gdouble zoom)
 617 {
 618         ModestGtkhtmlMimePartViewPrivate *priv;
 619
 620         g_return_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self));
 621
 622         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 623         priv->current_zoom = zoom;
 624         gtk_html_set_magnification (GTK_HTML(self), zoom);
 625
 626         gtk_widget_queue_resize (GTK_WIDGET (self));
 627 }
 628
 629 static gdouble
 630 get_zoom (ModestGtkhtmlMimePartView *self)
 631 {
 632         ModestGtkhtmlMimePartViewPrivate *priv;
 633
 634         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), 1.0);
 635
 636         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 637
 638         return priv->current_zoom;
 639 }
 640
 641 static gboolean
 642 search (ModestGtkhtmlMimePartView *self,
 643         const gchar *string)
 644 {
 645         return gtk_html_engine_search (GTK_HTML (self),
 646                                        string,
 647                                        FALSE,   /* case sensitive */
 648                                        TRUE,    /* forward */
 649                                        FALSE);  /* regexp */
 650 }
 651
 652 static gboolean
 653 search_next (ModestGtkhtmlMimePartView *self)
 654 {
 655         return gtk_html_engine_search_next (GTK_HTML (self));
 656 }
 657
 658 static gboolean
 659 get_selection_area (ModestGtkhtmlMimePartView *self,
 660                     gint *x, gint *y,
 661                     gint *width, gint *height)
 662 {
 663 #ifdef HAVE_GTK_HTML_GET_SELECTION_AREA
 664         gtk_html_get_selection_area (GTK_HTML (self), x, y, width, height);
 665         return TRUE;
 666 #else
 667         return FALSE;
 668 #endif
 669 }
 670
 671
 672 /* TNY MIME PART IMPLEMENTATION */
 673
 674 static void
 675 tny_mime_part_view_init (gpointer g, gpointer iface_data)
 676 {
 677         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
 678
 679         klass->get_part = modest_gtkhtml_mime_part_view_get_part;
 680         klass->set_part = modest_gtkhtml_mime_part_view_set_part;
 681         klass->clear = modest_gtkhtml_mime_part_view_clear;
 682
 683         return;
 684 }
 685
 686 static TnyMimePart*
 687 modest_gtkhtml_mime_part_view_get_part (TnyMimePartView *self)
 688 {
 689         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_part_func (self);
 690 }
 691
 692
 693 static TnyMimePart*
 694 modest_gtkhtml_mime_part_view_get_part_default (TnyMimePartView *self)
 695 {
 696         return TNY_MIME_PART (get_part (MODEST_GTKHTML_MIME_PART_VIEW (self)));
 697 }
 698
 699 static void
 700 modest_gtkhtml_mime_part_view_set_part (TnyMimePartView *self,
 701                                         TnyMimePart *part)
 702 {
 703         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->set_part_func (self, part);
 704 }
 705
 706 static void
 707 modest_gtkhtml_mime_part_view_set_part_default (TnyMimePartView *self,
 708                                                 TnyMimePart *part)
 709 {
 710         g_return_if_fail ((part == NULL) || TNY_IS_MIME_PART (part));
 711
 712         set_part (MODEST_GTKHTML_MIME_PART_VIEW (self), part);
 713 }
 714
 715 static void
 716 modest_gtkhtml_mime_part_view_clear (TnyMimePartView *self)
 717 {
 718         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->clear_func (self);
 719 }
 720
 721 static void
 722 modest_gtkhtml_mime_part_view_clear_default (TnyMimePartView *self)
 723 {
 724         set_part (MODEST_GTKHTML_MIME_PART_VIEW (self), NULL);
 725 }
 726
 727 /* MODEST MIME PART VIEW IMPLEMENTATION */
 728
 729 static void
 730 modest_mime_part_view_init (gpointer g, gpointer iface_data)
 731 {
 732         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
 733
 734         klass->is_empty_func = modest_gtkhtml_mime_part_view_is_empty;
 735         klass->get_view_images_func = modest_gtkhtml_mime_part_view_get_view_images;
 736         klass->set_view_images_func = modest_gtkhtml_mime_part_view_set_view_images;
 737         klass->has_external_images_func = modest_gtkhtml_mime_part_view_has_external_images;
 738
 739         return;
 740 }
 741
 742 static gboolean
 743 modest_gtkhtml_mime_part_view_is_empty (ModestMimePartView *self)
 744 {
 745         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->is_empty_func (self);
 746 }
 747
 748 static gboolean
 749 modest_gtkhtml_mime_part_view_get_view_images (ModestMimePartView *self)
 750 {
 751         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_view_images_func (self);
 752 }
 753
 754 static void
 755 modest_gtkhtml_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images)
 756 {
 757         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->set_view_images_func (self, view_images);
 758 }
 759
 760 static gboolean
 761 modest_gtkhtml_mime_part_view_has_external_images (ModestMimePartView *self)
 762 {
 763         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->has_external_images_func (self);
 764 }
 765
 766 static gboolean
 767 modest_gtkhtml_mime_part_view_is_empty_default (ModestMimePartView *self)
 768 {
 769         return is_empty (MODEST_GTKHTML_MIME_PART_VIEW (self));
 770 }
 771
 772 static gboolean
 773 modest_gtkhtml_mime_part_view_get_view_images_default (ModestMimePartView *self)
 774 {
 775         return get_view_images (MODEST_GTKHTML_MIME_PART_VIEW (self));
 776 }
 777
 778 static void
 779 modest_gtkhtml_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images)
 780 {
 781         set_view_images (MODEST_GTKHTML_MIME_PART_VIEW (self), view_images);
 782 }
 783
 784 static gboolean
 785 modest_gtkhtml_mime_part_view_has_external_images_default (ModestMimePartView *self)
 786 {
 787         return has_external_images (MODEST_GTKHTML_MIME_PART_VIEW (self));
 788 }
 789
 790
 791 /* MODEST ZOOMABLE IMPLEMENTATION */
 792 static void
 793 modest_zoomable_init (gpointer g, gpointer iface_data)
 794 {
 795         ModestZoomableIface *klass = (ModestZoomableIface *)g;
 796
 797         klass->get_zoom_func = modest_gtkhtml_mime_part_view_get_zoom;
 798         klass->set_zoom_func = modest_gtkhtml_mime_part_view_set_zoom;
 799         klass->zoom_minus_func = modest_gtkhtml_mime_part_view_zoom_minus;
 800         klass->zoom_plus_func = modest_gtkhtml_mime_part_view_zoom_plus;
 801
 802         return;
 803 }
 804
 805 static gdouble
 806 modest_gtkhtml_mime_part_view_get_zoom (ModestZoomable *self)
 807 {
 808         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_zoom_func (self);
 809 }
 810
 811 static gdouble
 812 modest_gtkhtml_mime_part_view_get_zoom_default (ModestZoomable *self)
 813 {
 814         return get_zoom (MODEST_GTKHTML_MIME_PART_VIEW (self));
 815 }
 816
 817 static void
 818 modest_gtkhtml_mime_part_view_set_zoom (ModestZoomable *self, gdouble value)
 819 {
 820         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
 821 }
 822
 823 static void
 824 modest_gtkhtml_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value)
 825 {
 826         set_zoom (MODEST_GTKHTML_MIME_PART_VIEW (self), value);
 827 }
 828
 829 static gboolean
 830 modest_gtkhtml_mime_part_view_zoom_minus (ModestZoomable *self)
 831 {
 832         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->zoom_minus_func (self);
 833 }
 834
 835 static gboolean
 836 modest_gtkhtml_mime_part_view_zoom_minus_default (ModestZoomable *self)
 837 {
 838         /* operation not supported in ModestGtkhtmlMimePartView */
 839         return FALSE;
 840 }
 841
 842 static gboolean
 843 modest_gtkhtml_mime_part_view_zoom_plus (ModestZoomable *self)
 844 {
 845         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->zoom_plus_func (self);
 846 }
 847
 848 static gboolean
 849 modest_gtkhtml_mime_part_view_zoom_plus_default (ModestZoomable *self)
 850 {
 851         /* operation not supported in ModestGtkhtmlMimePartView */
 852         return FALSE;
 853 }
 854
 855 /* ISEARCH VIEW IMPLEMENTATION */
 856 static void
 857 modest_isearch_view_init (gpointer g, gpointer iface_data)
 858 {
 859         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
 860
 861         klass->search_func = modest_gtkhtml_mime_part_view_search;
 862         klass->search_next_func = modest_gtkhtml_mime_part_view_search_next;
 863         klass->get_selection_area_func = modest_gtkhtml_mime_part_view_get_selection_area;
 864
 865         return;
 866 }
 867
 868 static gboolean
 869 modest_gtkhtml_mime_part_view_search (ModestISearchView *self, const gchar *string)
 870 {
 871         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->search_func (self, string);
 872 }
 873
 874 static gboolean
 875 modest_gtkhtml_mime_part_view_search_default (ModestISearchView *self, const gchar *string)
 876 {
 877         return search (MODEST_GTKHTML_MIME_PART_VIEW (self), string);
 878 }
 879
 880 static gboolean
 881 modest_gtkhtml_mime_part_view_search_next(ModestISearchView *self)
 882 {
 883         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->search_next_func (self);
 884 }
 885
 886 static gboolean
 887 modest_gtkhtml_mime_part_view_search_next_default (ModestISearchView *self)
 888 {
 889         return search_next (MODEST_GTKHTML_MIME_PART_VIEW (self));
 890 }
 891
 892 static gboolean
 893 modest_gtkhtml_mime_part_view_get_selection_area (ModestISearchView *self, gint *x, gint *y,
 894                                                   gint *width, gint *height)
 895 {
 896         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_selection_area_func (self, x, y, width, height);
 897 }
 898
 899 static gboolean
 900 modest_gtkhtml_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 901                                                           gint *width, gint *height)
 902 {
 903         return get_selection_area (MODEST_GTKHTML_MIME_PART_VIEW (self), x, y, width, height);
 904 }