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
  48 /* gobject structure methods */
  49 static void    modest_gtkhtml_mime_part_view_class_init (ModestGtkhtmlMimePartViewClass *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_gtkhtml_mime_part_view_init       (ModestGtkhtmlMimePartView *self);
  55 static void    modest_gtkhtml_mime_part_view_finalize   (GObject *self);
  56 static void    modest_gtkhtml_mime_part_view_dispose    (GObject *self);
  57
  58 /* GtkHTML signal handlers */
  59 static gboolean  on_link_clicked  (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self);
  60 static gboolean  on_url           (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self);
  61 static gboolean  on_url_requested (GtkWidget *widget, const gchar *uri, GtkHTMLStream *stream,
  62                                    ModestGtkhtmlMimePartView *self);
  63 static void      on_notify_style  (GObject *obj, GParamSpec *spec, gpointer userdata);
  64 static gboolean  update_style     (ModestGtkhtmlMimePartView *self);
  65 /* TnyMimePartView implementation */
  66 static void modest_gtkhtml_mime_part_view_clear (TnyMimePartView *self);
  67 static void modest_gtkhtml_mime_part_view_clear_default (TnyMimePartView *self);
  68 static void modest_gtkhtml_mime_part_view_set_part (TnyMimePartView *self, TnyMimePart *part);
  69 static void modest_gtkhtml_mime_part_view_set_part_default (TnyMimePartView *self, TnyMimePart *part);
  70 static TnyMimePart* modest_gtkhtml_mime_part_view_get_part (TnyMimePartView *self);
  71 static TnyMimePart* modest_gtkhtml_mime_part_view_get_part_default (TnyMimePartView *self);
  72 /* ModestMimePartView implementation */
  73 static gboolean modest_gtkhtml_mime_part_view_is_empty (ModestMimePartView *self);
  74 static gboolean modest_gtkhtml_mime_part_view_is_empty_default (ModestMimePartView *self);
  75 static gboolean modest_gtkhtml_mime_part_view_get_view_images (ModestMimePartView *self);
  76 static gboolean modest_gtkhtml_mime_part_view_get_view_images_default (ModestMimePartView *self);
  77 static void     modest_gtkhtml_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images);
  78 static void     modest_gtkhtml_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images);
  79 static gboolean modest_gtkhtml_mime_part_view_has_external_images (ModestMimePartView *self);
  80 static gboolean modest_gtkhtml_mime_part_view_has_external_images_default (ModestMimePartView *self);
  81 /* ModestZoomable implementation */
  82 static gdouble modest_gtkhtml_mime_part_view_get_zoom (ModestZoomable *self);
  83 static void modest_gtkhtml_mime_part_view_set_zoom (ModestZoomable *self, gdouble value);
  84 static gboolean modest_gtkhtml_mime_part_view_zoom_minus (ModestZoomable *self);
  85 static gboolean modest_gtkhtml_mime_part_view_zoom_plus (ModestZoomable *self);
  86 static gdouble modest_gtkhtml_mime_part_view_get_zoom_default (ModestZoomable *self);
  87 static void modest_gtkhtml_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value);
  88 static gboolean modest_gtkhtml_mime_part_view_zoom_minus_default (ModestZoomable *self);
  89 static gboolean modest_gtkhtml_mime_part_view_zoom_plus_default (ModestZoomable *self);
  90 /* ModestISearchView implementation */
  91 static gboolean modest_gtkhtml_mime_part_view_search                    (ModestISearchView *self, const gchar *string);
  92 static gboolean modest_gtkhtml_mime_part_view_search_next               (ModestISearchView *self);
  93 static gboolean modest_gtkhtml_mime_part_view_get_selection_area        (ModestISearchView *self, gint *x, gint *y,
  94                                                                          gint *width, gint *height);
  95 static gboolean modest_gtkhtml_mime_part_view_search_default            (ModestISearchView *self, const gchar *string);
  96 static gboolean modest_gtkhtml_mime_part_view_search_next_default       (ModestISearchView *self);
  97 static gboolean modest_gtkhtml_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
  98                                                                           gint *width, gint *height);
  99
 100
 101 /* internal api */
 102 static TnyMimePart  *get_part   (ModestGtkhtmlMimePartView *self);
 103 static void          set_html_part   (ModestGtkhtmlMimePartView *self, TnyMimePart *part);
 104 static void          set_text_part   (ModestGtkhtmlMimePartView *self, TnyMimePart *part);
 105 static void          set_empty_part  (ModestGtkhtmlMimePartView *self);
 106 static void          set_part   (ModestGtkhtmlMimePartView *self, TnyMimePart *part);
 107 static gboolean      is_empty   (ModestGtkhtmlMimePartView *self);
 108 static gboolean      get_view_images   (ModestGtkhtmlMimePartView *self);
 109 static void          set_view_images   (ModestGtkhtmlMimePartView *self, gboolean view_images);
 110 static gboolean      has_external_images   (ModestGtkhtmlMimePartView *self);
 111 static void          set_zoom   (ModestGtkhtmlMimePartView *self, gdouble zoom);
 112 static gdouble       get_zoom   (ModestGtkhtmlMimePartView *self);
 113 static gboolean      has_contents_receiver (gpointer engine, const gchar *data,
 114                                             size_t len, gboolean *has_contents);
 115 static gboolean      search             (ModestGtkhtmlMimePartView *self, const gchar *string);
 116 static gboolean      search_next        (ModestGtkhtmlMimePartView *self);
 117 static gboolean      get_selection_area (ModestGtkhtmlMimePartView *self, gint *x, gint *y,
 118                                          gint *width, gint *height);
 119
 120 typedef struct _ModestGtkhtmlMimePartViewPrivate ModestGtkhtmlMimePartViewPrivate;
 121 struct _ModestGtkhtmlMimePartViewPrivate {
 122         TnyMimePart *part;
 123         gdouble current_zoom;
 124         gboolean view_images;
 125         gboolean has_external_images;
 126         GSList *sighandlers;
 127 };
 128
 129 #define MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 130                                                                                        MODEST_TYPE_GTKHTML_MIME_PART_VIEW, \
 131                                                                                        ModestGtkhtmlMimePartViewPrivate))
 132
 133 enum {
 134         STOP_STREAMS_SIGNAL,
 135         LAST_SIGNAL
 136 };
 137
 138 static GtkHTMLClass *parent_class = NULL;
 139
 140 static guint signals[LAST_SIGNAL] = {0};
 141
 142 GtkWidget *
 143 modest_gtkhtml_mime_part_view_new ()
 144 {
 145         return g_object_new (MODEST_TYPE_GTKHTML_MIME_PART_VIEW, NULL);
 146 }
 147
 148 /* GOBJECT IMPLEMENTATION */
 149 GType
 150 modest_gtkhtml_mime_part_view_get_type (void)
 151 {
 152         static GType my_type = 0;
 153         if (!my_type) {
 154                 static const GTypeInfo my_info = {
 155                         sizeof(ModestGtkhtmlMimePartViewClass),
 156                         NULL,           /* base init */
 157                         NULL,           /* base finalize */
 158                         (GClassInitFunc) modest_gtkhtml_mime_part_view_class_init,
 159                         NULL,           /* class finalize */
 160                         NULL,           /* class data */
 161                         sizeof(ModestGtkhtmlMimePartView),
 162                         1,              /* n_preallocs */
 163                         (GInstanceInitFunc) modest_gtkhtml_mime_part_view_init,
 164                         NULL
 165                 };
 166
 167                 static const GInterfaceInfo tny_mime_part_view_info =
 168                 {
 169                   (GInterfaceInitFunc) tny_mime_part_view_init, /* interface_init */
 170                   NULL,         /* interface_finalize */
 171                   NULL          /* interface_data */
 172                 };
 173
 174                 static const GInterfaceInfo modest_mime_part_view_info =
 175                 {
 176                   (GInterfaceInitFunc) modest_mime_part_view_init, /* interface_init */
 177                   NULL,         /* interface_finalize */
 178                   NULL          /* interface_data */
 179                 };
 180
 181                 static const GInterfaceInfo modest_zoomable_info =
 182                 {
 183                   (GInterfaceInitFunc) modest_zoomable_init, /* interface_init */
 184                   NULL,         /* interface_finalize */
 185                   NULL          /* interface_data */
 186                 };
 187
 188                 static const GInterfaceInfo modest_isearch_view_info =
 189                 {
 190                   (GInterfaceInitFunc) modest_isearch_view_init, /* interface_init */
 191                   NULL,         /* interface_finalize */
 192                   NULL          /* interface_data */
 193                 };
 194
 195                 my_type = g_type_register_static (GTK_TYPE_HTML,
 196                                                   "ModestGtkhtmlMimePartView",
 197                                                   &my_info, 0);
 198
 199                 g_type_add_interface_static (my_type, TNY_TYPE_MIME_PART_VIEW,
 200                         &tny_mime_part_view_info);
 201
 202                 g_type_add_interface_static (my_type, MODEST_TYPE_MIME_PART_VIEW,
 203                         &modest_mime_part_view_info);
 204
 205                 g_type_add_interface_static (my_type, MODEST_TYPE_ZOOMABLE,
 206                         &modest_zoomable_info);
 207                 g_type_add_interface_static (my_type, MODEST_TYPE_ISEARCH_VIEW,
 208                         &modest_isearch_view_info);
 209         }
 210         return my_type;
 211 }
 212
 213 static void
 214 modest_gtkhtml_mime_part_view_class_init (ModestGtkhtmlMimePartViewClass *klass)
 215 {
 216         GObjectClass *gobject_class;
 217         GtkBindingSet *binding_set;
 218
 219         gobject_class = (GObjectClass*) klass;
 220
 221         parent_class            = g_type_class_peek_parent (klass);
 222         gobject_class->dispose = modest_gtkhtml_mime_part_view_dispose;
 223         gobject_class->finalize = modest_gtkhtml_mime_part_view_finalize;
 224
 225         klass->get_part_func = modest_gtkhtml_mime_part_view_get_part_default;
 226         klass->set_part_func = modest_gtkhtml_mime_part_view_set_part_default;
 227         klass->clear_func = modest_gtkhtml_mime_part_view_clear_default;
 228         klass->is_empty_func = modest_gtkhtml_mime_part_view_is_empty_default;
 229         klass->get_view_images_func = modest_gtkhtml_mime_part_view_get_view_images_default;
 230         klass->set_view_images_func = modest_gtkhtml_mime_part_view_set_view_images_default;
 231         klass->has_external_images_func = modest_gtkhtml_mime_part_view_has_external_images_default;
 232         klass->get_zoom_func = modest_gtkhtml_mime_part_view_get_zoom_default;
 233         klass->set_zoom_func = modest_gtkhtml_mime_part_view_set_zoom_default;
 234         klass->zoom_minus_func = modest_gtkhtml_mime_part_view_zoom_minus_default;
 235         klass->zoom_plus_func = modest_gtkhtml_mime_part_view_zoom_plus_default;
 236         klass->search_func = modest_gtkhtml_mime_part_view_search_default;
 237         klass->search_next_func = modest_gtkhtml_mime_part_view_search_next_default;
 238         klass->get_selection_area_func = modest_gtkhtml_mime_part_view_get_selection_area_default;
 239
 240         binding_set = gtk_binding_set_by_class (klass);
 241         gtk_binding_entry_skip (binding_set, GDK_Down, 0);
 242         gtk_binding_entry_skip (binding_set, GDK_Up, 0);
 243         gtk_binding_entry_skip (binding_set, GDK_KP_Up, 0);
 244         gtk_binding_entry_skip (binding_set, GDK_KP_Down, 0);
 245         gtk_binding_entry_skip (binding_set, GDK_Page_Down, 0);
 246         gtk_binding_entry_skip (binding_set, GDK_Page_Up, 0);
 247         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Up, 0);
 248         gtk_binding_entry_skip (binding_set, GDK_KP_Page_Down, 0);
 249         gtk_binding_entry_skip (binding_set, GDK_Home, 0);
 250         gtk_binding_entry_skip (binding_set, GDK_End, 0);
 251         gtk_binding_entry_skip (binding_set, GDK_KP_Home, 0);
 252         gtk_binding_entry_skip (binding_set, GDK_KP_End, 0);
 253
 254         g_type_class_add_private (gobject_class, sizeof(ModestGtkhtmlMimePartViewPrivate));
 255
 256         signals[STOP_STREAMS_SIGNAL] =
 257                 g_signal_new ("stop-streams",
 258                               G_TYPE_FROM_CLASS (gobject_class),
 259                               G_SIGNAL_RUN_FIRST,
 260                               G_STRUCT_OFFSET (ModestGtkhtmlMimePartViewClass,stop_streams),
 261                               NULL, NULL,
 262                               g_cclosure_marshal_VOID__VOID,
 263                               G_TYPE_NONE, 0);
 264
 265 }
 266
 267 static void
 268 modest_gtkhtml_mime_part_view_init (ModestGtkhtmlMimePartView *self)
 269 {
 270         ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 271         GdkColor base;
 272         GdkColor text;
 273
 274         gtk_html_set_editable        (GTK_HTML(self), FALSE);
 275         gtk_html_allow_selection     (GTK_HTML(self), TRUE);
 276         gtk_html_set_caret_mode      (GTK_HTML(self), FALSE);
 277         gtk_html_set_blocking        (GTK_HTML(self), TRUE);
 278         gtk_html_set_images_blocking (GTK_HTML(self), TRUE);
 279
 280         gdk_color_parse ("#fff", &base);
 281         gdk_color_parse ("#000", &text);
 282         gtk_widget_modify_base (GTK_WIDGET (self), GTK_STATE_NORMAL, &base);
 283         gtk_widget_modify_text (GTK_WIDGET (self), GTK_STATE_NORMAL, &text);
 284
 285         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 286                                                        G_OBJECT(self), "link_clicked",
 287                                                        G_CALLBACK(on_link_clicked), self);
 288         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 289                                                        G_OBJECT(self), "url_requested",
 290                                                        G_CALLBACK(on_url_requested), self);
 291         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 292                                                        G_OBJECT(self), "on_url",
 293                                                        G_CALLBACK(on_url), self);
 294         priv->sighandlers = modest_signal_mgr_connect (priv->sighandlers,
 295                                                        G_OBJECT(self), "notify::style",
 296                                                        G_CALLBACK (on_notify_style), (gpointer) self);
 297
 298         priv->part = NULL;
 299         priv->current_zoom = 1.0;
 300         priv->view_images = FALSE;
 301         priv->has_external_images = FALSE;
 302 }
 303
 304 static void
 305 modest_gtkhtml_mime_part_view_finalize (GObject *obj)
 306 {
 307         ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (obj);
 308
 309         modest_signal_mgr_disconnect_all_and_destroy (priv->sighandlers);
 310         priv->sighandlers = NULL;
 311
 312         G_OBJECT_CLASS (parent_class)->finalize (obj);
 313 }
 314
 315 static void
 316 modest_gtkhtml_mime_part_view_dispose (GObject *obj)
 317 {
 318         ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (obj);
 319
 320         g_signal_emit (G_OBJECT (obj), signals[STOP_STREAMS_SIGNAL], 0);
 321
 322         if (priv->part) {
 323                 g_object_unref (priv->part);
 324                 priv->part = NULL;
 325         }
 326
 327         G_OBJECT_CLASS (parent_class)->dispose (obj);
 328 }
 329
 330 /* GTKHTML SIGNALS HANDLERS */
 331
 332 static void
 333 on_notify_style (GObject *obj, GParamSpec *spec, gpointer userdata)
 334 {
 335         if (strcmp ("style", spec->name) == 0) {
 336                 g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc) update_style,
 337                                  g_object_ref (obj), g_object_unref);
 338                 gtk_widget_queue_draw (GTK_WIDGET (obj));
 339         }
 340 }
 341
 342 gboolean
 343 same_color (GdkColor *a, GdkColor *b)
 344 {
 345         return ((a->red == b->red) &&
 346                 (a->green == b->green) &&
 347                 (a->blue == b->blue));
 348 }
 349
 350 static gboolean
 351 update_style (ModestGtkhtmlMimePartView *self)
 352 {
 353         GdkColor base;
 354         GdkColor text;
 355         GtkRcStyle *rc_style;
 356
 357         gdk_threads_enter ();
 358
 359         if (GTK_WIDGET_VISIBLE (self)) {
 360                 rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (self));
 361
 362                 gdk_color_parse ("#fff", &base);
 363                 gdk_color_parse ("#000", &text);
 364
 365                 if (!same_color (&(rc_style->base[GTK_STATE_NORMAL]), &base) &&
 366                     !same_color (&(rc_style->text[GTK_STATE_NORMAL]), &text)) {
 367
 368                         rc_style->base[GTK_STATE_NORMAL] = base;
 369                         rc_style->text[GTK_STATE_NORMAL] = text;
 370                         gtk_widget_modify_style (GTK_WIDGET (self), rc_style);
 371                 }
 372         }
 373
 374         gdk_threads_leave ();
 375
 376         return FALSE;
 377 }
 378
 379
 380
 381 static gboolean
 382 on_link_clicked (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self)
 383 {
 384         gboolean result;
 385         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 386
 387         g_signal_emit_by_name (G_OBJECT (self), "activate-link", uri, &result);
 388         return result;
 389 }
 390
 391 static gboolean
 392 on_url (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMimePartView *self)
 393 {
 394         gboolean result;
 395         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 396
 397         g_signal_emit_by_name (G_OBJECT (self), "link-hover", uri, &result);
 398         return result;
 399 }
 400
 401 typedef struct {
 402         gpointer buffer;
 403         GtkHTML *html;
 404         GtkHTMLStream *stream;
 405 } ImageFetcherInfo;
 406
 407 static gboolean
 408 on_url_requested (GtkWidget *widget, const gchar *uri, GtkHTMLStream *stream,
 409                   ModestGtkhtmlMimePartView *self)
 410 {
 411         gboolean result;
 412         TnyStream *tny_stream;
 413         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 414
 415         if (g_str_has_prefix (uri, "http:")) {
 416                 ModestGtkhtmlMimePartViewPrivate *priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 417
 418                 if (!priv->view_images)
 419                         priv->has_external_images = TRUE;
 420         }
 421
 422         tny_stream = TNY_STREAM (modest_tny_stream_gtkhtml_new (stream, GTK_HTML (widget)));
 423         g_signal_emit_by_name (MODEST_MIME_PART_VIEW (self), "fetch-url", uri, tny_stream, &result);
 424         g_object_unref (tny_stream);
 425         return result;
 426 }
 427
 428 /* INTERNAL API */
 429
 430 static void
 431 set_html_part (ModestGtkhtmlMimePartView *self, TnyMimePart *part)
 432 {
 433         GtkHTMLStream *gtkhtml_stream;
 434         TnyStream *tny_stream;
 435
 436         g_return_if_fail (self);
 437         g_return_if_fail (part);
 438
 439         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 440
 441         gtkhtml_stream = gtk_html_begin(GTK_HTML(self));
 442
 443         tny_stream     = TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream, GTK_HTML (self)));
 444         tny_stream_reset (tny_stream);
 445
 446         tny_mime_part_decode_to_stream ((TnyMimePart*)part, tny_stream, NULL);
 447         tny_stream_close (tny_stream);
 448         g_object_unref (G_OBJECT(tny_stream));
 449 }
 450
 451 static void
 452 set_text_part (ModestGtkhtmlMimePartView *self, TnyMimePart *part)
 453 {
 454         TnyStream* text_to_html_stream, *tny_stream;
 455         GtkHTMLStream *gtkhtml_stream;
 456
 457         g_return_if_fail (self);
 458         g_return_if_fail (part);
 459
 460         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 461
 462         gtkhtml_stream = gtk_html_begin(GTK_HTML(self));
 463         tny_stream =  TNY_STREAM(modest_tny_stream_gtkhtml_new (gtkhtml_stream, GTK_HTML (self)));
 464         text_to_html_stream = TNY_STREAM (modest_stream_text_to_html_new (tny_stream));
 465         modest_stream_text_to_html_set_linkify_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream), 64*1024);
 466         modest_stream_text_to_html_set_full_limit (MODEST_STREAM_TEXT_TO_HTML (text_to_html_stream), 640*1024);
 467
 468         // FIXME: tinymail
 469         tny_mime_part_decode_to_stream ((TnyMimePart*)part, text_to_html_stream, NULL);
 470         tny_stream_write (text_to_html_stream, "\n", 1);
 471         tny_stream_reset (text_to_html_stream);
 472         tny_stream_close (text_to_html_stream);
 473
 474         g_object_unref (G_OBJECT(text_to_html_stream));
 475         g_object_unref (G_OBJECT(tny_stream));
 476         /* gtk_html_stream_destroy (gtkhtml_stream); */
 477 }
 478
 479 static void
 480 set_empty_part (ModestGtkhtmlMimePartView *self)
 481 {
 482         g_return_if_fail (self);
 483
 484         g_signal_emit (G_OBJECT (self), signals[STOP_STREAMS_SIGNAL], 0);
 485
 486         gtk_html_load_from_string (GTK_HTML(self),
 487                                    "", 1);
 488 }
 489
 490 static void
 491 set_part (ModestGtkhtmlMimePartView *self, TnyMimePart *part)
 492 {
 493         ModestGtkhtmlMimePartViewPrivate *priv;
 494
 495         g_return_if_fail (self);
 496
 497         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE(self);
 498         priv->has_external_images = FALSE;
 499
 500         if (part != priv->part) {
 501                 if (priv->part)
 502                         g_object_unref (G_OBJECT(priv->part));
 503                 if (part)
 504                         g_object_ref   (G_OBJECT(part));
 505                 priv->part = part;
 506         }
 507
 508         if (!part) {
 509                 set_empty_part (self);
 510                 return;
 511         }
 512
 513         if (tny_mime_part_content_type_is (part, "text/html")) {
 514                 set_html_part (self, part);
 515         } else {
 516                 if (tny_mime_part_content_type_is (part, "message/rfc822")) {
 517                         gchar *header_content_type, *header_content_type_lower;
 518                         header_content_type = modest_tny_mime_part_get_header_value (part, "Content-Type");
 519                         if (header_content_type) {
 520                                 header_content_type = g_strstrip (header_content_type);
 521                                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 522
 523                                 if (!g_ascii_strcasecmp (header_content_type_lower, "text/html"))
 524                                         set_html_part (self, part);
 525                                 else
 526                                         set_text_part (self, part);
 527
 528                                 g_free (header_content_type_lower);
 529                                 g_free (header_content_type);
 530                         } else {
 531                                 set_text_part (self, part);
 532                         }
 533                 } else {
 534                         set_text_part (self, part);
 535                 }
 536         }
 537
 538 }
 539
 540 static TnyMimePart*
 541 get_part (ModestGtkhtmlMimePartView *self)
 542 {
 543         TnyMimePart *part;
 544
 545         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), NULL);
 546
 547         part = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE(self)->part;
 548
 549         if (part)
 550                 g_object_ref (part);
 551
 552         return part;
 553 }
 554
 555 static gboolean
 556 has_contents_receiver (gpointer engine, const gchar *data,
 557                        size_t len, gboolean *has_contents)
 558 {
 559         if (len > 1 || ((len == 1)&&(data[0]!='\n'))) {
 560                 *has_contents = TRUE;
 561                 return FALSE;
 562         }
 563         return TRUE;
 564 }
 565
 566 static gboolean
 567 is_empty   (ModestGtkhtmlMimePartView *self)
 568 {
 569         /* TODO: Find some gtkhtml API to check whether there is any (visible, non markup)
 570          * text in the message:
 571          */
 572         gboolean has_contents = FALSE;
 573
 574         gtk_html_export (GTK_HTML (self), "text/plain",
 575                          (GtkHTMLSaveReceiverFn) has_contents_receiver, &has_contents);
 576
 577         return !has_contents;
 578 }
 579
 580 static gboolean
 581 get_view_images   (ModestGtkhtmlMimePartView *self)
 582 {
 583         ModestGtkhtmlMimePartViewPrivate *priv;
 584
 585         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 586
 587         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 588         return priv->view_images;
 589 }
 590
 591 static void
 592 set_view_images   (ModestGtkhtmlMimePartView *self, gboolean view_images)
 593 {
 594         ModestGtkhtmlMimePartViewPrivate *priv;
 595
 596         g_return_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self));
 597
 598         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 599         priv->view_images = view_images;
 600 }
 601
 602 static gboolean
 603 has_external_images   (ModestGtkhtmlMimePartView *self)
 604 {
 605         ModestGtkhtmlMimePartViewPrivate *priv;
 606
 607         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), FALSE);
 608
 609         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 610         return priv->has_external_images;
 611 }
 612
 613 static void
 614 set_zoom (ModestGtkhtmlMimePartView *self, gdouble zoom)
 615 {
 616         ModestGtkhtmlMimePartViewPrivate *priv;
 617
 618         g_return_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self));
 619
 620         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 621         priv->current_zoom = zoom;
 622         gtk_html_set_magnification (GTK_HTML(self), zoom);
 623
 624         gtk_widget_queue_resize (GTK_WIDGET (self));
 625 }
 626
 627 static gdouble
 628 get_zoom (ModestGtkhtmlMimePartView *self)
 629 {
 630         ModestGtkhtmlMimePartViewPrivate *priv;
 631
 632         g_return_val_if_fail (MODEST_IS_GTKHTML_MIME_PART_VIEW (self), 1.0);
 633
 634         priv = MODEST_GTKHTML_MIME_PART_VIEW_GET_PRIVATE (self);
 635
 636         return priv->current_zoom;
 637 }
 638
 639 static gboolean
 640 search (ModestGtkhtmlMimePartView *self,
 641         const gchar *string)
 642 {
 643         return gtk_html_engine_search (GTK_HTML (self),
 644                                        string,
 645                                        FALSE,   /* case sensitive */
 646                                        TRUE,    /* forward */
 647                                        FALSE);  /* regexp */
 648 }
 649
 650 static gboolean
 651 search_next (ModestGtkhtmlMimePartView *self)
 652 {
 653         return gtk_html_engine_search_next (GTK_HTML (self));
 654 }
 655
 656 static gboolean
 657 get_selection_area (ModestGtkhtmlMimePartView *self,
 658                     gint *x, gint *y,
 659                     gint *width, gint *height)
 660 {
 661 #ifdef HAVE_GTK_HTML_GET_SELECTION_AREA
 662         gtk_html_get_selection_area (GTK_HTML (self), x, y, width, height);
 663         return TRUE;
 664 #else
 665         return FALSE;
 666 #endif
 667 }
 668
 669
 670 /* TNY MIME PART IMPLEMENTATION */
 671
 672 static void
 673 tny_mime_part_view_init (gpointer g, gpointer iface_data)
 674 {
 675         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
 676
 677         klass->get_part = modest_gtkhtml_mime_part_view_get_part;
 678         klass->set_part = modest_gtkhtml_mime_part_view_set_part;
 679         klass->clear = modest_gtkhtml_mime_part_view_clear;
 680
 681         return;
 682 }
 683
 684 static TnyMimePart*
 685 modest_gtkhtml_mime_part_view_get_part (TnyMimePartView *self)
 686 {
 687         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_part_func (self);
 688 }
 689
 690
 691 static TnyMimePart*
 692 modest_gtkhtml_mime_part_view_get_part_default (TnyMimePartView *self)
 693 {
 694         return TNY_MIME_PART (get_part (MODEST_GTKHTML_MIME_PART_VIEW (self)));
 695 }
 696
 697 static void
 698 modest_gtkhtml_mime_part_view_set_part (TnyMimePartView *self,
 699                                         TnyMimePart *part)
 700 {
 701         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->set_part_func (self, part);
 702 }
 703
 704 static void
 705 modest_gtkhtml_mime_part_view_set_part_default (TnyMimePartView *self,
 706                                                 TnyMimePart *part)
 707 {
 708         g_return_if_fail ((part == NULL) || TNY_IS_MIME_PART (part));
 709
 710         set_part (MODEST_GTKHTML_MIME_PART_VIEW (self), part);
 711 }
 712
 713 static void
 714 modest_gtkhtml_mime_part_view_clear (TnyMimePartView *self)
 715 {
 716         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->clear_func (self);
 717 }
 718
 719 static void
 720 modest_gtkhtml_mime_part_view_clear_default (TnyMimePartView *self)
 721 {
 722         set_part (MODEST_GTKHTML_MIME_PART_VIEW (self), NULL);
 723 }
 724
 725 /* MODEST MIME PART VIEW IMPLEMENTATION */
 726
 727 static void
 728 modest_mime_part_view_init (gpointer g, gpointer iface_data)
 729 {
 730         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
 731
 732         klass->is_empty_func = modest_gtkhtml_mime_part_view_is_empty;
 733         klass->get_view_images_func = modest_gtkhtml_mime_part_view_get_view_images;
 734         klass->set_view_images_func = modest_gtkhtml_mime_part_view_set_view_images;
 735         klass->has_external_images_func = modest_gtkhtml_mime_part_view_has_external_images;
 736
 737         return;
 738 }
 739
 740 static gboolean
 741 modest_gtkhtml_mime_part_view_is_empty (ModestMimePartView *self)
 742 {
 743         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->is_empty_func (self);
 744 }
 745
 746 static gboolean
 747 modest_gtkhtml_mime_part_view_get_view_images (ModestMimePartView *self)
 748 {
 749         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_view_images_func (self);
 750 }
 751
 752 static void
 753 modest_gtkhtml_mime_part_view_set_view_images (ModestMimePartView *self, gboolean view_images)
 754 {
 755         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->set_view_images_func (self, view_images);
 756 }
 757
 758 static gboolean
 759 modest_gtkhtml_mime_part_view_has_external_images (ModestMimePartView *self)
 760 {
 761         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->has_external_images_func (self);
 762 }
 763
 764 static gboolean
 765 modest_gtkhtml_mime_part_view_is_empty_default (ModestMimePartView *self)
 766 {
 767         return is_empty (MODEST_GTKHTML_MIME_PART_VIEW (self));
 768 }
 769
 770 static gboolean
 771 modest_gtkhtml_mime_part_view_get_view_images_default (ModestMimePartView *self)
 772 {
 773         return get_view_images (MODEST_GTKHTML_MIME_PART_VIEW (self));
 774 }
 775
 776 static void
 777 modest_gtkhtml_mime_part_view_set_view_images_default (ModestMimePartView *self, gboolean view_images)
 778 {
 779         set_view_images (MODEST_GTKHTML_MIME_PART_VIEW (self), view_images);
 780 }
 781
 782 static gboolean
 783 modest_gtkhtml_mime_part_view_has_external_images_default (ModestMimePartView *self)
 784 {
 785         return has_external_images (MODEST_GTKHTML_MIME_PART_VIEW (self));
 786 }
 787
 788
 789 /* MODEST ZOOMABLE IMPLEMENTATION */
 790 static void
 791 modest_zoomable_init (gpointer g, gpointer iface_data)
 792 {
 793         ModestZoomableIface *klass = (ModestZoomableIface *)g;
 794
 795         klass->get_zoom_func = modest_gtkhtml_mime_part_view_get_zoom;
 796         klass->set_zoom_func = modest_gtkhtml_mime_part_view_set_zoom;
 797         klass->zoom_minus_func = modest_gtkhtml_mime_part_view_zoom_minus;
 798         klass->zoom_plus_func = modest_gtkhtml_mime_part_view_zoom_plus;
 799
 800         return;
 801 }
 802
 803 static gdouble
 804 modest_gtkhtml_mime_part_view_get_zoom (ModestZoomable *self)
 805 {
 806         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_zoom_func (self);
 807 }
 808
 809 static gdouble
 810 modest_gtkhtml_mime_part_view_get_zoom_default (ModestZoomable *self)
 811 {
 812         return get_zoom (MODEST_GTKHTML_MIME_PART_VIEW (self));
 813 }
 814
 815 static void
 816 modest_gtkhtml_mime_part_view_set_zoom (ModestZoomable *self, gdouble value)
 817 {
 818         MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
 819 }
 820
 821 static void
 822 modest_gtkhtml_mime_part_view_set_zoom_default (ModestZoomable *self, gdouble value)
 823 {
 824         set_zoom (MODEST_GTKHTML_MIME_PART_VIEW (self), value);
 825 }
 826
 827 static gboolean
 828 modest_gtkhtml_mime_part_view_zoom_minus (ModestZoomable *self)
 829 {
 830         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->zoom_minus_func (self);
 831 }
 832
 833 static gboolean
 834 modest_gtkhtml_mime_part_view_zoom_minus_default (ModestZoomable *self)
 835 {
 836         /* operation not supported in ModestGtkhtmlMimePartView */
 837         return FALSE;
 838 }
 839
 840 static gboolean
 841 modest_gtkhtml_mime_part_view_zoom_plus (ModestZoomable *self)
 842 {
 843         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->zoom_plus_func (self);
 844 }
 845
 846 static gboolean
 847 modest_gtkhtml_mime_part_view_zoom_plus_default (ModestZoomable *self)
 848 {
 849         /* operation not supported in ModestGtkhtmlMimePartView */
 850         return FALSE;
 851 }
 852
 853 /* ISEARCH VIEW IMPLEMENTATION */
 854 static void
 855 modest_isearch_view_init (gpointer g, gpointer iface_data)
 856 {
 857         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
 858
 859         klass->search_func = modest_gtkhtml_mime_part_view_search;
 860         klass->search_next_func = modest_gtkhtml_mime_part_view_search_next;
 861         klass->get_selection_area_func = modest_gtkhtml_mime_part_view_get_selection_area;
 862
 863         return;
 864 }
 865
 866 static gboolean
 867 modest_gtkhtml_mime_part_view_search (ModestISearchView *self, const gchar *string)
 868 {
 869         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->search_func (self, string);
 870 }
 871
 872 static gboolean
 873 modest_gtkhtml_mime_part_view_search_default (ModestISearchView *self, const gchar *string)
 874 {
 875         return search (MODEST_GTKHTML_MIME_PART_VIEW (self), string);
 876 }
 877
 878 static gboolean
 879 modest_gtkhtml_mime_part_view_search_next(ModestISearchView *self)
 880 {
 881         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->search_next_func (self);
 882 }
 883
 884 static gboolean
 885 modest_gtkhtml_mime_part_view_search_next_default (ModestISearchView *self)
 886 {
 887         return search_next (MODEST_GTKHTML_MIME_PART_VIEW (self));
 888 }
 889
 890 static gboolean
 891 modest_gtkhtml_mime_part_view_get_selection_area (ModestISearchView *self, gint *x, gint *y,
 892                                                   gint *width, gint *height)
 893 {
 894         return MODEST_GTKHTML_MIME_PART_VIEW_GET_CLASS (self)->get_selection_area_func (self, x, y, width, height);
 895 }
 896
 897 static gboolean
 898 modest_gtkhtml_mime_part_view_get_selection_area_default (ModestISearchView *self, gint *x, gint *y,
 899                                                           gint *width, gint *height)
 900 {
 901         return get_selection_area (MODEST_GTKHTML_MIME_PART_VIEW (self), x, y, width, height);
 902 }