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