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