git.maemo.org Git - modest/blob - src/widgets/modest-gtkhtml-msg-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 <tny-gtk-text-buffer-stream.h>
  32 #include <string.h>
  33 #include <regex.h>
  34 #include <ctype.h>
  35 #include <stdlib.h>
  36 #include <glib/gi18n.h>
  37 #include <tny-list.h>
  38 #include <tny-simple-list.h>
  39
  40 #include <modest-tny-msg.h>
  41 #include <modest-text-utils.h>
  42 #include <widgets/modest-msg-view.h>
  43 #include <widgets/modest-mail-header-view.h>
  44 #include <widgets/modest-attachments-view.h>
  45 #include <modest-marshal.h>
  46 #include <widgets/modest-gtkhtml-mime-part-view.h>
  47 #include <widgets/modest-gtkhtml-msg-view.h>
  48 #include <widgets/modest-isearch-view.h>
  49
  50 /* FIXNE: we should have no maemo-deps in widgets/ */
  51 #ifdef MODEST_PLATFORM_MAEMO
  52 #include "maemo/modest-hildon-includes.h"
  53 #endif /*MODEST_PLATFORM_MAEMO*/
  54
  55
  56 /* 'private'/'protected' functions */
  57 static void     modest_gtkhtml_msg_view_class_init   (ModestGtkhtmlMsgViewClass *klass);
  58 static void     tny_msg_view_init (gpointer g, gpointer iface_data);
  59 static void     tny_mime_part_view_init (gpointer g, gpointer iface_data);
  60 static void     modest_mime_part_view_init (gpointer g, gpointer iface_data);
  61 static void     modest_zoomable_init (gpointer g, gpointer iface_data);
  62 static void     modest_isearch_view_init (gpointer g, gpointer iface_data);
  63 static void     modest_msg_view_init (gpointer g, gpointer iface_data);
  64 static void     modest_gtkhtml_msg_view_init         (ModestGtkhtmlMsgView *obj);
  65 static void     modest_gtkhtml_msg_view_finalize     (GObject *obj);
  66 static void     modest_gtkhtml_msg_view_destroy     (GtkObject *obj);
  67 static void     set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
  68 static void     get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
  69
  70 /* headers signals */
  71 static void on_recpt_activated (ModestMailHeaderView *header_view, const gchar *address, ModestGtkhtmlMsgView *msg_view);
  72 static void on_attachment_activated (ModestAttachmentsView * att_view, TnyMimePart *mime_part, gpointer userdata);
  73
  74 /* body view signals */
  75 static gboolean on_activate_link (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *msg_view);
  76 static gboolean on_fetch_url (GtkWidget *widget, const gchar *uri, TnyStream *stream,
  77                               ModestGtkhtmlMsgView *msg_view);
  78 static gboolean on_link_hover (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *msg_view);
  79
  80 #ifdef MAEMO_CHANGES
  81 static void     on_tap_and_hold (GtkWidget *widget, gpointer userdata);
  82 #endif /*MAEMO_CHANGES*/
  83
  84
  85 /* size allocation and drawing handlers */
  86 static void get_view_allocation (ModestGtkhtmlMsgView *msg_view, GtkAllocation *allocation);
  87 static void size_request (GtkWidget *widget, GtkRequisition *req);
  88 static void size_allocate (GtkWidget *widget, GtkAllocation *alloc);
  89 static void realize (GtkWidget *widget);
  90 static void unrealize (GtkWidget *widget);
  91 static gint expose (GtkWidget *widget, GdkEventExpose *event);
  92 static void reclamp_adjustment (GtkAdjustment *adj, gboolean *value_changed);
  93 static void set_hadjustment_values (ModestGtkhtmlMsgView *msg_view, gboolean *value_changed);
  94 static void set_scroll_adjustments (ModestGtkhtmlMsgView *msg_view, GtkAdjustment *hadj, GtkAdjustment *vadj);
  95 static void adjustment_value_changed (GtkAdjustment *adj, gpointer data);
  96 static void html_adjustment_changed (GtkAdjustment *adj, gpointer data);
  97 static void disconnect_vadjustment (ModestGtkhtmlMsgView *obj);
  98 static void disconnect_hadjustment (ModestGtkhtmlMsgView *obj);
  99 static gboolean idle_readjust_scroll (ModestGtkhtmlMsgView *obj);
 100
 101 /* GtkContainer methods */
 102 static void forall (GtkContainer *container, gboolean include_internals,
 103                     GtkCallback callback, gpointer userdata);
 104 static void container_remove (GtkContainer *container, GtkWidget *widget);
 105
 106 /* TnyMimePartView implementation */
 107 static void modest_msg_view_mp_clear (TnyMimePartView *self);
 108 static void modest_msg_view_mp_set_part (TnyMimePartView *self, TnyMimePart *part);
 109 static void modest_msg_view_mp_set_part_default (TnyMimePartView *self, TnyMimePart *part);
 110 static TnyMimePart* modest_msg_view_mp_get_part (TnyMimePartView *self);
 111 static TnyMimePart* modest_msg_view_mp_get_part_default (TnyMimePartView *self);
 112 /* ModestMimePartView implementation */
 113 static gboolean modest_msg_view_mp_is_empty (ModestMimePartView *self);
 114 static gboolean modest_msg_view_mp_is_empty_default (ModestMimePartView *self);
 115 /* TnyMsgView implementation */
 116 static TnyMsg *modest_msg_view_get_msg (TnyMsgView *self);
 117 static TnyMsg *modest_msg_view_get_msg_default (TnyMsgView *self);
 118 static void modest_msg_view_set_msg (TnyMsgView *self, TnyMsg *msg);
 119 static void modest_msg_view_set_msg_default (TnyMsgView *self, TnyMsg *msg);
 120 static void modest_msg_view_clear (TnyMsgView *self);
 121 static void modest_msg_view_clear_default (TnyMsgView *self);
 122 static void modest_msg_view_set_unavailable (TnyMsgView *self);
 123 static void modest_msg_view_set_unavailable_default (TnyMsgView *self);
 124 static TnyMimePartView *modest_msg_view_create_mime_part_view_for (TnyMsgView *self, TnyMimePart *part);
 125 static TnyMimePartView *modest_msg_view_create_mime_part_view_for_default (TnyMsgView *self, TnyMimePart *part);
 126 static TnyMsgView *modest_msg_view_create_new_inline_viewer (TnyMsgView *self);
 127 static TnyMsgView *modest_msg_view_create_new_inline_viewer_default (TnyMsgView *self);
 128 /* ModestZoomable implementation */
 129 static gdouble modest_msg_view_get_zoom (ModestZoomable *self);
 130 static void modest_msg_view_set_zoom (ModestZoomable *self, gdouble value);
 131 static gboolean modest_msg_view_zoom_minus (ModestZoomable *self);
 132 static gboolean modest_msg_view_zoom_plus (ModestZoomable *self);
 133 static gdouble modest_msg_view_get_zoom_default (ModestZoomable *self);
 134 static void modest_msg_view_set_zoom_default (ModestZoomable *self, gdouble value);
 135 static gboolean modest_msg_view_zoom_minus_default (ModestZoomable *self);
 136 static gboolean modest_msg_view_zoom_plus_default (ModestZoomable *self);
 137 /* ModestISearchView implementation */
 138 static gboolean modest_msg_view_search (ModestISearchView *self, const gchar *string);
 139 static gboolean modest_msg_view_search_default (ModestISearchView *self, const gchar *string);
 140 static gboolean modest_msg_view_search_next (ModestISearchView *self);
 141 static gboolean modest_msg_view_search_next_default (ModestISearchView *self);
 142 /* ModestMsgView implementation */
 143 static GtkAdjustment *modest_gtkhtml_msg_view_get_vadjustment (ModestMsgView *self);
 144 static GtkAdjustment *modest_gtkhtml_msg_view_get_hadjustment (ModestMsgView *self);
 145 static void modest_gtkhtml_msg_view_set_vadjustment (ModestMsgView *self, GtkAdjustment *vadj);
 146 static void modest_gtkhtml_msg_view_set_hadjustment (ModestMsgView *self, GtkAdjustment *hadj);
 147 static void modest_gtkhtml_msg_view_set_shadow_type (ModestMsgView *self, GtkShadowType type);
 148 static GtkShadowType modest_gtkhtml_msg_view_get_shadow_type (ModestMsgView *self);
 149 static TnyHeaderFlags modest_gtkhtml_msg_view_get_priority (ModestMsgView *self);
 150 static void modest_gtkhtml_msg_view_set_priority (ModestMsgView *self, TnyHeaderFlags flags);
 151 static TnyList *modest_gtkhtml_msg_view_get_selected_attachments (ModestMsgView *self);
 152 static TnyList *modest_gtkhtml_msg_view_get_attachments (ModestMsgView *self);
 153 static void modest_gtkhtml_msg_view_grab_focus (ModestMsgView *self);
 154 static void modest_gtkhtml_msg_view_remove_attachment (ModestMsgView *view, TnyMimePart *attachment);
 155 static GtkAdjustment *modest_gtkhtml_msg_view_get_vadjustment_default (ModestMsgView *self);
 156 static GtkAdjustment *modest_gtkhtml_msg_view_get_hadjustment_default (ModestMsgView *self);
 157 static void modest_gtkhtml_msg_view_set_vadjustment_default (ModestMsgView *self, GtkAdjustment *vadj);
 158 static void modest_gtkhtml_msg_view_set_hadjustment_default (ModestMsgView *self, GtkAdjustment *hadj);
 159 static void modest_gtkhtml_msg_view_set_shadow_type_default (ModestMsgView *self, GtkShadowType type);
 160 static GtkShadowType modest_gtkhtml_msg_view_get_shadow_type_default (ModestMsgView *self);
 161 static TnyHeaderFlags modest_gtkhtml_msg_view_get_priority_default (ModestMsgView *self);
 162 static void modest_gtkhtml_msg_view_set_priority_default (ModestMsgView *self, TnyHeaderFlags flags);
 163 static TnyList *modest_gtkhtml_msg_view_get_selected_attachments_default (ModestMsgView *self);
 164 static TnyList *modest_gtkhtml_msg_view_get_attachments_default (ModestMsgView *self);
 165 static void modest_gtkhtml_msg_view_grab_focus_default (ModestMsgView *self);
 166 static void modest_gtkhtml_msg_view_remove_attachment_default (ModestMsgView *view, TnyMimePart *attachment);
 167
 168 /* internal api */
 169 static TnyMsg   *get_message   (ModestGtkhtmlMsgView *self);
 170 static void     set_message    (ModestGtkhtmlMsgView *self, TnyMsg *tny_msg);
 171 static gboolean is_empty       (ModestGtkhtmlMsgView *self);
 172 static void     set_zoom       (ModestGtkhtmlMsgView *self, gdouble zoom);
 173 static gdouble  get_zoom       (ModestGtkhtmlMsgView *self);
 174 static gboolean search         (ModestGtkhtmlMsgView *self, const gchar *search);
 175 static gboolean search_next    (ModestGtkhtmlMsgView *self);
 176 static GtkAdjustment *get_vadjustment (ModestGtkhtmlMsgView *self);
 177 static GtkAdjustment *get_hadjustment (ModestGtkhtmlMsgView *self);
 178 static void set_vadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *vadj);
 179 static void set_hadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *hadj);
 180 static void set_shadow_type (ModestGtkhtmlMsgView *self, GtkShadowType type);
 181 static GtkShadowType get_shadow_type (ModestGtkhtmlMsgView *self);
 182 static TnyHeaderFlags get_priority (ModestGtkhtmlMsgView *self);
 183 static void set_priority (ModestGtkhtmlMsgView *self, TnyHeaderFlags flags);
 184 static TnyList *get_selected_attachments (ModestGtkhtmlMsgView *self);
 185 static TnyList *get_attachments (ModestGtkhtmlMsgView *self);
 186 static void grab_focus (ModestGtkhtmlMsgView *self);
 187 static void remove_attachment (ModestGtkhtmlMsgView *view, TnyMimePart *attachment);
 188
 189 /* list properties */
 190 enum {
 191         PROP_0,
 192         PROP_HADJUSTMENT,
 193         PROP_VADJUSTMENT,
 194         PROP_SHADOW_TYPE
 195 };
 196
 197 typedef struct _ModestGtkhtmlMsgViewPrivate ModestGtkhtmlMsgViewPrivate;
 198 struct _ModestGtkhtmlMsgViewPrivate {
 199         GtkWidget   *body_view;
 200         GtkWidget   *mail_header_view;
 201         GtkWidget   *attachments_view;
 202
 203         TnyMsg      *msg;
 204
 205         /* embedded elements */
 206         GtkWidget   *headers_box;
 207         GtkWidget   *html_scroll;
 208         GtkWidget   *attachments_box;
 209
 210         /* internal adjustments for set_scroll_adjustments */
 211         GtkAdjustment *hadj;
 212         GtkAdjustment *vadj;
 213         GtkShadowType shadow_type;
 214
 215         /* gdk windows for drawing */
 216         GdkWindow *view_window;
 217         GdkWindow *headers_window;
 218         GdkWindow *html_window;
 219
 220         /* zoom */
 221         gdouble current_zoom;
 222
 223         /* link click management */
 224         gchar *last_url;
 225 };
 226
 227 #define MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 228                                                                                  MODEST_TYPE_GTKHTML_MSG_VIEW, \
 229                                                                                  ModestGtkhtmlMsgViewPrivate))
 230
 231 /* globals */
 232 static GtkContainerClass *parent_class = NULL;
 233
 234 GType
 235 modest_gtkhtml_msg_view_get_type (void)
 236 {
 237         static GType my_type = 0;
 238         if (!my_type) {
 239                 static const GTypeInfo my_info = {
 240                         sizeof(ModestGtkhtmlMsgViewClass),
 241                         NULL,           /* base init */
 242                         NULL,           /* base finalize */
 243                         (GClassInitFunc) modest_gtkhtml_msg_view_class_init,
 244                         NULL,           /* class finalize */
 245                         NULL,           /* class data */
 246                         sizeof(ModestGtkhtmlMsgView),
 247                         1,              /* n_preallocs */
 248                         (GInstanceInitFunc) modest_gtkhtml_msg_view_init,
 249                         NULL
 250                 };
 251                 static const GInterfaceInfo tny_msg_view_info =
 252                 {
 253                   (GInterfaceInitFunc) tny_msg_view_init, /* interface_init */
 254                   NULL,         /* interface_finalize */
 255                   NULL          /* interface_data */
 256                 };
 257
 258                 static const GInterfaceInfo tny_mime_part_view_info =
 259                 {
 260                   (GInterfaceInitFunc) tny_mime_part_view_init, /* interface_init */
 261                   NULL,         /* interface_finalize */
 262                   NULL          /* interface_data */
 263                 };
 264
 265                 static const GInterfaceInfo modest_mime_part_view_info =
 266                 {
 267                   (GInterfaceInitFunc) modest_mime_part_view_init, /* interface_init */
 268                   NULL,         /* interface_finalize */
 269                   NULL          /* interface_data */
 270                 };
 271
 272                 static const GInterfaceInfo modest_zoomable_info =
 273                 {
 274                   (GInterfaceInitFunc) modest_zoomable_init, /* interface_init */
 275                   NULL,         /* interface_finalize */
 276                   NULL          /* interface_data */
 277                 };
 278
 279                 static const GInterfaceInfo modest_isearch_view_info =
 280                 {
 281                   (GInterfaceInitFunc) modest_isearch_view_init, /* interface_init */
 282                   NULL,         /* interface_finalize */
 283                   NULL          /* interface_data */
 284                 };
 285
 286                 static const GInterfaceInfo modest_msg_view_info =
 287                 {
 288                   (GInterfaceInitFunc) modest_msg_view_init, /* interface_init */
 289                   NULL,         /* interface_finalize */
 290                   NULL          /* interface_data */
 291                 };
 292
 293                 my_type = g_type_register_static (GTK_TYPE_CONTAINER,
 294                                                   "ModestGtkhtmlMsgView",
 295                                                   &my_info, 0);
 296
 297                 g_type_add_interface_static (my_type, TNY_TYPE_MIME_PART_VIEW,
 298                         &tny_mime_part_view_info);
 299
 300                 g_type_add_interface_static (my_type, MODEST_TYPE_MIME_PART_VIEW,
 301                         &modest_mime_part_view_info);
 302
 303                 g_type_add_interface_static (my_type, TNY_TYPE_MSG_VIEW,
 304                         &tny_msg_view_info);
 305
 306                 g_type_add_interface_static (my_type, MODEST_TYPE_ZOOMABLE,
 307                         &modest_zoomable_info);
 308
 309                 g_type_add_interface_static (my_type, MODEST_TYPE_ISEARCH_VIEW,
 310                         &modest_isearch_view_info);
 311
 312                 g_type_add_interface_static (my_type, MODEST_TYPE_MSG_VIEW,
 313                         &modest_msg_view_info);
 314         }
 315         return my_type;
 316 }
 317
 318 static void
 319 modest_gtkhtml_msg_view_class_init (ModestGtkhtmlMsgViewClass *klass)
 320 {
 321         GObjectClass *gobject_class;
 322         GtkWidgetClass *widget_class;
 323         GtkObjectClass *gtkobject_class;
 324         GtkContainerClass *container_class;
 325         gobject_class = (GObjectClass*) klass;
 326         widget_class = (GtkWidgetClass *) klass;
 327         gtkobject_class = (GtkObjectClass *) klass;
 328         container_class = (GtkContainerClass *) klass;
 329
 330         parent_class            = g_type_class_peek_parent (klass);
 331         gobject_class->finalize = modest_gtkhtml_msg_view_finalize;
 332         gobject_class->set_property = set_property;
 333         gobject_class->get_property = get_property;
 334         gtkobject_class->destroy = modest_gtkhtml_msg_view_destroy;
 335
 336         widget_class->realize = realize;
 337         widget_class->unrealize = unrealize;
 338         widget_class->expose_event = expose;
 339         widget_class->size_request = size_request;
 340         widget_class->size_allocate = size_allocate;
 341
 342         container_class->forall = forall;
 343         container_class->remove = container_remove;
 344
 345         klass->set_scroll_adjustments = set_scroll_adjustments;
 346         klass->get_part_func = modest_msg_view_mp_get_part_default;
 347         klass->set_part_func = modest_msg_view_mp_set_part_default;
 348         klass->is_empty_func = modest_msg_view_mp_is_empty_default;
 349         klass->get_msg_func = modest_msg_view_get_msg_default;
 350         klass->set_msg_func = modest_msg_view_set_msg_default;
 351         klass->set_unavailable_func = modest_msg_view_set_unavailable_default;
 352         klass->clear_func = modest_msg_view_clear_default;
 353         klass->create_mime_part_view_for_func = modest_msg_view_create_mime_part_view_for_default;
 354         klass->create_new_inline_viewer_func = modest_msg_view_create_new_inline_viewer_default;
 355         klass->get_zoom_func = modest_msg_view_get_zoom_default;
 356         klass->set_zoom_func = modest_msg_view_set_zoom_default;
 357         klass->zoom_minus_func = modest_msg_view_zoom_minus_default;
 358         klass->zoom_plus_func = modest_msg_view_zoom_plus_default;
 359         klass->search_func = modest_msg_view_search_default;
 360         klass->search_next_func = modest_msg_view_search_next_default;
 361         klass->get_vadjustment_func = modest_gtkhtml_msg_view_get_vadjustment_default;
 362         klass->get_hadjustment_func = modest_gtkhtml_msg_view_get_hadjustment_default;
 363         klass->set_vadjustment_func = modest_gtkhtml_msg_view_set_vadjustment_default;
 364         klass->set_hadjustment_func = modest_gtkhtml_msg_view_set_hadjustment_default;
 365         klass->get_shadow_type_func = modest_gtkhtml_msg_view_get_shadow_type_default;
 366         klass->set_shadow_type_func = modest_gtkhtml_msg_view_set_shadow_type_default;
 367         klass->get_priority_func = modest_gtkhtml_msg_view_get_priority_default;
 368         klass->set_priority_func = modest_gtkhtml_msg_view_set_priority_default;
 369         klass->get_selected_attachments_func = modest_gtkhtml_msg_view_get_selected_attachments_default;
 370         klass->get_attachments_func = modest_gtkhtml_msg_view_get_attachments_default;
 371         klass->grab_focus_func = modest_gtkhtml_msg_view_grab_focus_default;
 372         klass->remove_attachment_func = modest_gtkhtml_msg_view_remove_attachment_default;
 373
 374         g_type_class_add_private (gobject_class, sizeof(ModestGtkhtmlMsgViewPrivate));
 375
 376         g_object_class_install_property (gobject_class,
 377                                          PROP_HADJUSTMENT,
 378                                          g_param_spec_object ("hadjustment",
 379                                                               _("Horizontal adjustment"),
 380                                                               _("GtkAdjustment with information of the horizontal visible position"),
 381                                                               GTK_TYPE_ADJUSTMENT,
 382                                                               G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
 383
 384         g_object_class_install_property (gobject_class,
 385                                          PROP_VADJUSTMENT,
 386                                          g_param_spec_object ("vadjustment",
 387                                                               _("Vertical adjustment"),
 388                                                               _("GtkAdjustment with information of the vertical visible position"),
 389                                                               GTK_TYPE_ADJUSTMENT,
 390                                                               G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
 391
 392         g_object_class_install_property (gobject_class,
 393                                          PROP_SHADOW_TYPE,
 394                                          g_param_spec_enum ("shadow_type",
 395                                                             _("Shadow type"),
 396                                                             _("Kind of shadow that's shown around the view"),
 397                                                             GTK_TYPE_SHADOW_TYPE,
 398                                                             GTK_SHADOW_IN,
 399                                                             G_PARAM_READABLE | G_PARAM_WRITABLE ));
 400
 401         widget_class->set_scroll_adjustments_signal =
 402                 g_signal_new ("set_scroll_adjustments",
 403                               G_OBJECT_CLASS_TYPE (gobject_class),
 404                               G_SIGNAL_RUN_LAST|G_SIGNAL_ACTION,
 405                               G_STRUCT_OFFSET (ModestGtkhtmlMsgViewClass, set_scroll_adjustments),
 406                               NULL, NULL,
 407                               modest_marshal_VOID__POINTER_POINTER,
 408                               G_TYPE_NONE, 2,
 409                               GTK_TYPE_ADJUSTMENT,
 410                               GTK_TYPE_ADJUSTMENT);
 411 }
 412
 413 static void
 414 set_property (GObject *object,
 415               guint prop_id,
 416               const GValue *value,
 417               GParamSpec *pspec)
 418 {
 419         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (object);
 420
 421         switch (prop_id) {
 422         case PROP_HADJUSTMENT:
 423                 set_hadjustment (self, g_value_get_object (value));
 424                 break;
 425         case PROP_VADJUSTMENT:
 426                 set_vadjustment (self, g_value_get_object (value));
 427                 break;
 428         case PROP_SHADOW_TYPE:
 429                 set_shadow_type (self, g_value_get_enum (value));
 430                 break;
 431         default:
 432                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 433                 break;
 434         }
 435 }
 436
 437 static void
 438 get_property (GObject *object,
 439               guint prop_id,
 440               GValue *value,
 441               GParamSpec *pspec)
 442 {
 443         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (object);
 444         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 445
 446         switch (prop_id) {
 447         case PROP_HADJUSTMENT:
 448                 g_value_set_object (value, priv->hadj);
 449                 break;
 450         case PROP_VADJUSTMENT:
 451                 g_value_set_object (value, priv->vadj);
 452                 break;
 453         case PROP_SHADOW_TYPE:
 454                 g_value_set_enum (value, priv->shadow_type);
 455                 break;
 456         default:
 457                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 458                 break;
 459         }
 460 }
 461
 462 static void
 463 disconnect_hadjustment (ModestGtkhtmlMsgView *self)
 464 {
 465         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 466
 467         if (priv->hadj) {
 468                 g_signal_handlers_disconnect_by_func(priv->hadj, adjustment_value_changed, self);
 469                 g_object_unref (priv->hadj);
 470                 priv->hadj = NULL;
 471         }
 472 }
 473
 474 static void
 475 disconnect_vadjustment (ModestGtkhtmlMsgView *self)
 476 {
 477         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 478
 479         if (priv->vadj) {
 480                 g_signal_handlers_disconnect_by_func(priv->vadj, adjustment_value_changed, self);
 481                 g_object_unref (priv->vadj);
 482                 priv->vadj = NULL;
 483         }
 484 }
 485
 486 static void
 487 get_view_allocation (ModestGtkhtmlMsgView *self, GtkAllocation *allocation)
 488 {
 489         /* This method gets the allocation of the widget in parent widget. It's the
 490            real position and size of the widget */
 491         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 492
 493         allocation->x = 0;
 494         allocation->y = 0;
 495
 496         if (priv->shadow_type != GTK_SHADOW_NONE) {
 497                 allocation->x = GTK_WIDGET (self)->style->xthickness;
 498                 allocation->y = GTK_WIDGET (self)->style->ythickness;
 499         }
 500
 501         allocation->width = MAX (1, (GTK_WIDGET (self)->allocation.width) - allocation->x * 2);
 502         allocation->height = MAX (1, (GTK_WIDGET (self)->allocation.height) - allocation->y * 2);
 503
 504 }
 505
 506 static void
 507 reclamp_adjustment (GtkAdjustment *adj,
 508                     gboolean *value_changed)
 509 {
 510         gdouble value = adj->value;
 511
 512         /* Correct value to be inside the expected values of a scroll */
 513
 514         value = CLAMP (value, 0, adj->upper - adj->page_size);
 515
 516         if (value != adj->value) {
 517                 adj->value = value;
 518                 if (value_changed)
 519                         *value_changed = TRUE;
 520         } else if (value_changed) {
 521                 *value_changed = FALSE;
 522         }
 523 }
 524
 525 static void
 526 set_hadjustment_values (ModestGtkhtmlMsgView *self,
 527                         gboolean *value_changed)
 528 {
 529         GtkAllocation view_allocation;
 530         GtkAdjustment *hadj = get_hadjustment (self);
 531
 532         get_view_allocation (self, &view_allocation);
 533         hadj->page_size = view_allocation.width;
 534         hadj->step_increment = view_allocation.width * 0.1;
 535         hadj->page_increment = view_allocation.width * 0.9;
 536
 537         hadj->lower = 0;
 538         hadj->upper = view_allocation.width;
 539
 540         reclamp_adjustment (hadj, value_changed);
 541
 542 }
 543
 544 static void
 545 set_vadjustment_values (ModestGtkhtmlMsgView *self,
 546                         gboolean *value_changed)
 547 {
 548         GtkAllocation view_allocation;
 549         GtkAdjustment *vadj = get_vadjustment (self);
 550         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 551         gint full_height = 0;
 552         GtkAdjustment *html_vadj;
 553
 554         get_view_allocation (self, &view_allocation);
 555         vadj->page_size = view_allocation.height;
 556         vadj->step_increment = view_allocation.height * 0.1;
 557         vadj->page_increment = view_allocation.height * 0.9;
 558
 559         vadj->lower = 0;
 560
 561         if (priv->headers_box && GTK_WIDGET_VISIBLE(priv->headers_box)) {
 562                 GtkRequisition child_requisition;
 563
 564                 gtk_widget_get_child_requisition (priv->headers_box, &child_requisition);
 565                 full_height = child_requisition.height;
 566         } else {
 567                 full_height = 0;
 568         }
 569
 570         /* Get the real height of the embedded html */
 571         if (priv->html_scroll && GTK_WIDGET_VISIBLE(priv->html_scroll)) {
 572                 html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
 573                 full_height += html_vadj->upper;
 574         }
 575
 576         vadj->upper = MAX (view_allocation.height, full_height);
 577
 578         reclamp_adjustment (vadj, value_changed);
 579
 580 }
 581
 582 static void
 583 set_scroll_adjustments (ModestGtkhtmlMsgView *self,
 584                         GtkAdjustment *hadj,
 585                         GtkAdjustment *vadj)
 586 {
 587         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 588         set_hadjustment (self, hadj);
 589         set_vadjustment (self, vadj);
 590
 591         gtk_container_set_focus_vadjustment (GTK_CONTAINER (priv->body_view), vadj);
 592 }
 593
 594 static void
 595 realize (GtkWidget *widget)
 596 {
 597         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (widget);
 598         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 599         GtkAdjustment *hadj = get_hadjustment (self);
 600         GtkAdjustment *vadj = get_vadjustment (self);
 601         GdkWindowAttr attributes;
 602         gint event_mask;
 603         gint attributes_mask;
 604         GtkAllocation view_allocation;
 605
 606         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 607
 608         /* The structure of the GdkWindow's is:
 609          *    * widget->window: the shown gdkwindow embedding all the stuff inside
 610          *    * view_window: a backing store gdkwindow containing the headers and contents
 611          *      being scrolled. This window should have all the visible and non visible
 612          *      widgets inside.
 613          *    * headers_window: gdk window for headers_box.
 614          *    * html_window: gdk window for html_scroll (the scrolled window containing the
 615          *      body view showing the contents of the mail).
 616          */
 617
 618         attributes.x = widget->allocation.x;
 619         attributes.y = widget->allocation.y;
 620         attributes.width = widget->allocation.width;
 621         attributes.height = widget->allocation.height;
 622         attributes.window_type = GDK_WINDOW_CHILD;
 623         attributes.wclass = GDK_INPUT_OUTPUT;
 624         attributes.visual = gtk_widget_get_visual (widget);
 625         attributes.colormap = gtk_widget_get_colormap (widget);
 626
 627         event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
 628         attributes.event_mask = event_mask | GDK_BUTTON_PRESS_MASK;
 629         attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 630
 631         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 632                                          &attributes, attributes_mask);
 633         gdk_window_set_user_data (widget->window, self);
 634
 635         get_view_allocation (self, &view_allocation);
 636
 637         attributes.x = view_allocation.x;
 638         attributes.y = view_allocation.y;
 639         attributes.width = view_allocation.width;
 640         attributes.height = view_allocation.height;
 641         attributes.event_mask = 0;
 642         priv->view_window = gdk_window_new (widget->window, &attributes, attributes_mask);
 643         gdk_window_set_user_data (priv->view_window, self);
 644         gdk_window_set_back_pixmap (priv->view_window, NULL, FALSE);
 645
 646         attributes.x = -hadj->value;
 647         attributes.y = -vadj->value;
 648         attributes.width = hadj->upper;
 649         if (priv->headers_box)
 650                 attributes.height = GTK_WIDGET (priv->headers_box)->allocation.height;
 651         else
 652                 attributes.height = 1;
 653         attributes.event_mask = event_mask;
 654
 655         priv->headers_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
 656         gdk_window_set_user_data (priv->headers_window, self);
 657
 658         if (priv->headers_box)
 659                 gtk_widget_set_parent_window (priv->headers_box, priv->headers_window);
 660
 661         attributes.x = -hadj->value;
 662         if (priv->headers_box)
 663                 attributes.y = GTK_WIDGET (priv->headers_box)->allocation.height - vadj->value;
 664         else
 665                 attributes.y = -vadj->value;
 666         attributes.width = hadj->upper;
 667         if (priv->headers_box)
 668                 attributes.height = vadj->upper - GTK_WIDGET (priv->headers_box)->allocation.height;
 669         else
 670                 attributes.height = vadj->upper;
 671         attributes.event_mask = event_mask;
 672
 673         priv->html_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
 674         gdk_window_set_user_data (priv->html_window, self);
 675
 676         if (priv->html_scroll)
 677                 gtk_widget_set_parent_window (priv->html_scroll, priv->html_window);
 678
 679         widget->style = gtk_style_attach (widget->style, widget->window);
 680         gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 681         gtk_style_set_background (widget->style, priv->headers_window, GTK_STATE_NORMAL);
 682         gtk_style_set_background (widget->style, priv->html_window, GTK_STATE_NORMAL);
 683
 684         gtk_paint_flat_box(widget->style, priv->headers_window, GTK_STATE_NORMAL,
 685                            GTK_SHADOW_NONE,
 686                            NULL, widget, "msgviewheaders",
 687                            0,0,-1,-1);
 688         gtk_paint_flat_box(widget->style, priv->html_window, GTK_STATE_NORMAL,
 689                            GTK_SHADOW_NONE,
 690                            NULL, widget, "msgviewcontents",
 691                            0,0,-1,-1);
 692
 693         gdk_window_show (priv->view_window);
 694         gdk_window_show (priv->headers_window);
 695         gdk_window_show (priv->html_window);
 696
 697 }
 698
 699 static void
 700 unrealize (GtkWidget *widget)
 701 {
 702         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (widget);
 703         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 704
 705         gdk_window_set_user_data (priv->view_window, NULL);
 706         gdk_window_destroy (priv->view_window);
 707         priv->view_window = NULL;
 708
 709         gdk_window_set_user_data (priv->headers_window, NULL);
 710         gdk_window_destroy (priv->headers_window);
 711         priv->headers_window = NULL;
 712
 713         gdk_window_set_user_data (priv->html_window, NULL);
 714         gdk_window_destroy (priv->html_window);
 715         priv->html_window = NULL;
 716
 717         if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 718                 ( * GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 719
 720 }
 721
 722 static gint
 723 expose (GtkWidget *widget,
 724         GdkEventExpose *event)
 725 {
 726         ModestGtkhtmlMsgView *self;
 727         ModestGtkhtmlMsgViewPrivate *priv;
 728
 729         if (GTK_WIDGET_DRAWABLE (widget)) {
 730                 self = MODEST_GTKHTML_MSG_VIEW (widget);
 731                 priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 732                 if (event->window == widget->window) {
 733                         gtk_paint_shadow (widget->style, widget->window,
 734                                           GTK_STATE_NORMAL, priv->shadow_type,
 735                                           &event->area, widget, "msgview",
 736                                           0,0,-1,-1);
 737                 } else if (event->window == priv->headers_window) {
 738                         gtk_paint_flat_box(widget->style, priv->headers_window, GTK_STATE_NORMAL,
 739                                            GTK_SHADOW_NONE,
 740                                            &event->area, widget, "msgviewheaders",
 741                                            0,0,-1,-1);
 742                 } else if (event->window == priv->html_window) {
 743                         gtk_paint_flat_box(widget->style, priv->html_window, GTK_STATE_NORMAL,
 744                                            GTK_SHADOW_NONE,
 745                                            &event->area, widget, "msgviewcontents",
 746                                            0,0,-1,-1);
 747                 }
 748                 if (priv->headers_box)
 749                         gtk_container_propagate_expose (GTK_CONTAINER (self), priv->headers_box, event);
 750                 if (priv->html_scroll)
 751                         gtk_container_propagate_expose (GTK_CONTAINER (self), priv->html_scroll, event);
 752                 (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 753         }
 754
 755         return FALSE;
 756 }
 757
 758 static void
 759 forall (GtkContainer *container,
 760         gboolean include_internals,
 761         GtkCallback callback,
 762         gpointer userdata)
 763 {
 764         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (container);
 765         g_return_if_fail (callback != NULL);
 766
 767         if (priv->headers_box)
 768                 (*callback) (priv->headers_box, userdata);
 769         if (priv->html_scroll)
 770                 (*callback) (priv->html_scroll, userdata);
 771 }
 772
 773 static void
 774 container_remove (GtkContainer *container,
 775                   GtkWidget *widget)
 776 {
 777         gboolean was_visible = FALSE;
 778         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (container);
 779         was_visible = GTK_WIDGET_VISIBLE (widget);
 780         if (widget == priv->headers_box) {
 781                 gtk_widget_unparent (priv->headers_box);
 782                 priv->headers_box = NULL;
 783         } else if (widget == priv->html_scroll) {
 784                 gtk_widget_unparent (priv->html_scroll);
 785                 priv->html_scroll = NULL;
 786         } else {
 787                 return;
 788         }
 789         if (was_visible)
 790                 gtk_widget_queue_resize (GTK_WIDGET(container));
 791
 792 }
 793
 794 static void
 795 size_request (GtkWidget *widget,
 796               GtkRequisition *req)
 797 {
 798         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (widget);
 799         GtkRequisition child_req;
 800
 801         req->width = 0;
 802         req->height = 0;
 803
 804         gtk_widget_size_request (priv->headers_box, &child_req);
 805         req->width = child_req.width;
 806         req->height += child_req.height;
 807         gtk_widget_size_request (priv->html_scroll, &child_req);
 808         req->width = MAX (child_req.width, req->width);
 809         req->height += child_req.height;
 810
 811 }
 812
 813 static void
 814 size_allocate (GtkWidget *widget,
 815                GtkAllocation *allocation)
 816 {
 817         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (widget);
 818         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 819         gboolean hadj_value_changed, vadj_value_changed;
 820         GtkAllocation headers_allocation, html_allocation, view_allocation;
 821         GtkAdjustment *html_vadj;
 822
 823         if (GTK_WIDGET_MAPPED (widget) &&
 824             priv->shadow_type != GTK_SHADOW_NONE &&
 825             (allocation->width != widget->allocation.width ||
 826              allocation->height != widget->allocation.height))
 827                 gdk_window_invalidate_rect (widget->window, NULL, FALSE);
 828
 829         widget->allocation = *allocation;
 830         set_hadjustment_values (self, &hadj_value_changed);
 831         set_vadjustment_values (self, &vadj_value_changed);
 832
 833         get_view_allocation (self, &view_allocation);
 834
 835         headers_allocation.x = 0;
 836         headers_allocation.y = 0;
 837         headers_allocation.width = view_allocation.width;
 838         if (priv->headers_box)
 839                 headers_allocation.height = GTK_WIDGET (priv->headers_box)->requisition.height;
 840         else
 841                 headers_allocation.height = 0;
 842
 843         html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
 844
 845         html_allocation.x = 0;
 846         html_allocation.y = headers_allocation.height;
 847         html_allocation.width = view_allocation.width;
 848         html_allocation.height = MAX ((gint) html_vadj->upper, (gint)(priv->vadj->upper - headers_allocation.height));
 849
 850         if (GTK_WIDGET_REALIZED (widget)) {
 851                 gdk_window_move_resize (widget->window,
 852                                         allocation->x,
 853                                         allocation->y,
 854                                         allocation->width,
 855                                         allocation->height);
 856
 857                 gdk_window_move_resize (priv->view_window,
 858                                         view_allocation.x,
 859                                         view_allocation.y,
 860                                         view_allocation.width,
 861                                         view_allocation.height);
 862                 gdk_window_move_resize (priv->headers_window,
 863                                         0,
 864                                         (gint) (- priv->vadj->value),
 865                                         allocation->width,
 866                                         headers_allocation.height);
 867                 gdk_window_move_resize (priv->html_window,
 868                                         (gint) (- priv->hadj->value),
 869                                         (gint) (html_allocation.y - priv->vadj->value),
 870                                         (gint) priv->hadj->upper,
 871                                         html_allocation.height);
 872         }
 873
 874         if (priv->headers_box && GTK_WIDGET_VISIBLE (priv->headers_box)) {
 875                 gtk_widget_size_allocate (priv->headers_box, &headers_allocation);
 876         }
 877         if (priv->html_scroll && GTK_WIDGET_VISIBLE (priv->html_scroll)) {
 878                 html_allocation.x = 0;
 879                 html_allocation.y = 0;
 880                 html_allocation.width = (gint) priv->hadj->upper;
 881                 html_allocation.height = (gint) priv->vadj->upper - headers_allocation.height;
 882                 gtk_widget_size_allocate (priv->html_scroll, &html_allocation);
 883         }
 884         gtk_adjustment_changed (priv->hadj);
 885         gtk_adjustment_changed (priv->vadj);
 886
 887         if (hadj_value_changed)
 888                 gtk_adjustment_value_changed (priv->hadj);
 889         if (vadj_value_changed)
 890                 gtk_adjustment_value_changed (priv->vadj);
 891
 892 }
 893
 894 static void
 895 adjustment_value_changed (GtkAdjustment *adj, gpointer data)
 896 {
 897         ModestGtkhtmlMsgView *self = NULL;
 898         ModestGtkhtmlMsgViewPrivate *priv = NULL;
 899
 900         g_return_if_fail (GTK_IS_ADJUSTMENT (adj));
 901         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (data));
 902
 903         self = MODEST_GTKHTML_MSG_VIEW (data);
 904         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 905
 906         if (GTK_WIDGET_REALIZED (self)) {
 907                 GtkAdjustment *hadj = get_hadjustment (self);
 908                 GtkAdjustment *vadj = get_vadjustment (self);
 909                 gint headers_offset = 0;
 910
 911                 gtk_widget_queue_resize (priv->html_scroll);
 912
 913                 if (priv->headers_box && GTK_WIDGET_VISIBLE (priv->headers_box)) {
 914                         gint old_x, old_y;
 915                         gint new_x, new_y;
 916                         gdk_window_get_position (priv->headers_window, &old_x, &old_y);
 917                         new_x = 0;
 918                         new_y = -vadj->value;
 919
 920                         headers_offset = GTK_WIDGET(priv->headers_box)->allocation.height;
 921
 922                         if (new_x != old_x || new_y != old_y) {
 923                                 gdk_window_move (priv->headers_window, new_x, new_y);
 924                                 gdk_window_process_updates (priv->headers_window, TRUE);
 925                         }
 926                 }
 927
 928                 if (priv->html_scroll && GTK_WIDGET_VISIBLE (priv->html_scroll)) {
 929                         gint old_x, old_y;
 930                         gint new_x, new_y;
 931                         gdk_window_get_position (priv->html_window, &old_x, &old_y);
 932                         new_x = -hadj->value;
 933                         new_y = headers_offset - vadj->value;
 934
 935                         if (new_x != old_x || new_y != old_y) {
 936                                 gdk_window_move (priv->html_window, new_x, new_y);
 937                                 gdk_window_process_updates (priv->html_window, TRUE);
 938                         }
 939                 }
 940
 941         }
 942 }
 943
 944 static void
 945 html_adjustment_changed (GtkAdjustment *adj,
 946                          gpointer userdata)
 947 {
 948         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (userdata);
 949         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 950         GtkAdjustment *html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW(priv->html_scroll));
 951         gboolean vadj_changed;
 952         gint new_height;
 953
 954         g_signal_stop_emission_by_name (G_OBJECT (adj), "changed");
 955
 956         priv->html_scroll->requisition.height = html_vadj->upper;
 957         if (html_vadj->upper == priv->html_scroll->allocation.height)
 958                 return;
 959         priv->html_scroll->allocation.height = html_vadj->upper;
 960
 961         set_vadjustment_values (self, &vadj_changed);
 962
 963         new_height = MAX ((gint) html_vadj->upper, (gint) (priv->vadj->upper - priv->headers_box->allocation.height));
 964
 965         gtk_adjustment_changed (priv->vadj);
 966         if (GTK_WIDGET_DRAWABLE (priv->html_scroll)) {
 967                 gdk_window_resize (priv->html_window, (gint) priv->hadj->upper, (gint) new_height);
 968                 gdk_window_process_updates (priv->view_window, TRUE);
 969                 gtk_container_resize_children (GTK_CONTAINER (self));
 970         }
 971
 972 }
 973
 974 gboolean
 975 idle_readjust_scroll (ModestGtkhtmlMsgView *self)
 976 {
 977
 978         /* We're out the main lock */
 979         gdk_threads_enter ();
 980
 981         if (GTK_WIDGET_DRAWABLE (self)) {
 982                 ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 983                 GtkAdjustment *html_vadj;
 984                 html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
 985                 html_vadj->page_size = html_vadj->upper;
 986                 gtk_adjustment_changed (html_vadj);
 987                 gtk_widget_queue_resize (GTK_WIDGET (self));
 988                 gtk_widget_queue_draw (GTK_WIDGET (self));
 989
 990                 /* Just another hack for making readjust really work. This forces an update
 991                  * of the scroll, and then, make the scroll really update properly the
 992                  * the size and not corrupt scrollable area */
 993                 gtk_adjustment_set_value (priv->vadj, 1.0);
 994                 gtk_adjustment_set_value (priv->vadj, 0.0);
 995         }
 996         g_object_unref (G_OBJECT (self));
 997
 998         gdk_threads_leave ();
 999
1000         return FALSE;
1001 }
1002
1003 static void
1004 modest_gtkhtml_msg_view_init (ModestGtkhtmlMsgView *obj)
1005 {
1006         ModestGtkhtmlMsgViewPrivate *priv;
1007         GtkAdjustment *html_vadj;
1008         GtkWidget *separator;
1009
1010         GTK_WIDGET_UNSET_FLAGS (obj, GTK_NO_WINDOW);
1011         gtk_widget_set_redraw_on_allocate (GTK_WIDGET (obj), TRUE);
1012         gtk_container_set_reallocate_redraws (GTK_CONTAINER (obj), TRUE);
1013         gtk_container_set_resize_mode (GTK_CONTAINER (obj), GTK_RESIZE_QUEUE);
1014
1015         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(obj);
1016
1017         priv->current_zoom = 1.0;
1018
1019         priv->hadj = NULL;
1020         priv->vadj = NULL;
1021         priv->shadow_type = GTK_SHADOW_IN;
1022         priv->view_window = NULL;
1023         priv->headers_window = NULL;
1024         priv->html_window = NULL;
1025
1026         gtk_widget_push_composite_child ();
1027         priv->html_scroll = gtk_scrolled_window_new (NULL, NULL);
1028         gtk_widget_set_composite_name (priv->html_scroll, "contents");
1029         gtk_widget_pop_composite_child ();
1030         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->html_scroll), GTK_POLICY_NEVER, GTK_POLICY_NEVER);
1031
1032         priv->msg                     = NULL;
1033
1034         priv->body_view                 = GTK_WIDGET (g_object_new (MODEST_TYPE_GTKHTML_MIME_PART_VIEW, NULL));
1035         priv->mail_header_view        = GTK_WIDGET(modest_mail_header_view_new (TRUE));
1036         gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
1037
1038         priv->attachments_view        = GTK_WIDGET(modest_attachments_view_new (NULL));
1039
1040         g_signal_connect (G_OBJECT(priv->body_view), "activate_link",
1041                                        G_CALLBACK(on_activate_link), obj);
1042         g_signal_connect (G_OBJECT(priv->body_view), "fetch_url",
1043                                        G_CALLBACK(on_fetch_url), obj);
1044         g_signal_connect (G_OBJECT(priv->body_view), "link_hover",
1045                                        G_CALLBACK(on_link_hover), obj);
1046
1047         g_signal_connect (G_OBJECT (priv->mail_header_view), "recpt-activated",
1048                           G_CALLBACK (on_recpt_activated), obj);
1049
1050         g_signal_connect (G_OBJECT (priv->attachments_view), "activate",
1051                           G_CALLBACK (on_attachment_activated), obj);
1052
1053         html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW(priv->html_scroll));
1054
1055         g_signal_connect (G_OBJECT (html_vadj), "changed",
1056                           G_CALLBACK (html_adjustment_changed), obj);
1057
1058         gtk_widget_push_composite_child ();
1059         priv->headers_box = gtk_vbox_new (0, FALSE);
1060         gtk_widget_set_composite_name (priv->headers_box, "headers");
1061         gtk_widget_pop_composite_child ();
1062
1063         if (priv->mail_header_view)
1064                 gtk_box_pack_start (GTK_BOX(priv->headers_box), priv->mail_header_view, FALSE, FALSE, 0);
1065
1066         if (priv->attachments_view) {
1067                 gchar *att_label = g_strconcat (_("mcen_me_viewer_attachments"), ":", NULL);
1068
1069                 priv->attachments_box = (GtkWidget *)
1070                         modest_mail_header_view_add_custom_header (MODEST_MAIL_HEADER_VIEW (priv->mail_header_view),
1071                                                                    att_label,
1072                                                                    priv->attachments_view,
1073                                                                    FALSE, FALSE);
1074                 gtk_widget_hide_all (priv->attachments_box);
1075                 g_free (att_label);
1076         }
1077
1078         separator = gtk_hseparator_new ();
1079         gtk_box_pack_start (GTK_BOX(priv->headers_box), separator, FALSE, FALSE, 0);
1080
1081         gtk_widget_set_parent (priv->headers_box, GTK_WIDGET (obj));
1082
1083         if (priv->body_view) {
1084                 gtk_container_add (GTK_CONTAINER (priv->html_scroll), priv->body_view);
1085                 gtk_widget_set_parent (priv->html_scroll, GTK_WIDGET(obj));
1086 #ifdef MAEMO_CHANGES
1087                 gtk_widget_tap_and_hold_setup (GTK_WIDGET (priv->body_view), NULL, NULL, 0);
1088                 g_signal_connect (G_OBJECT (priv->body_view), "tap-and-hold", G_CALLBACK (on_tap_and_hold), obj);
1089 #endif
1090         }
1091
1092 }
1093
1094
1095 static void
1096 modest_gtkhtml_msg_view_finalize (GObject *obj)
1097 {
1098         ModestGtkhtmlMsgViewPrivate *priv;
1099         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (obj);
1100
1101         if (priv->msg) {
1102                 g_object_unref (G_OBJECT(priv->msg));
1103                 priv->msg = NULL;
1104         }
1105
1106         /* we cannot disconnect sigs, because priv->body_view is
1107          * already dead */
1108
1109         disconnect_vadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1110         disconnect_hadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1111
1112         priv->body_view = NULL;
1113         priv->attachments_view = NULL;
1114
1115         G_OBJECT_CLASS(parent_class)->finalize (obj);
1116 }
1117
1118 static void
1119 modest_gtkhtml_msg_view_destroy (GtkObject *obj)
1120 {
1121         disconnect_vadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1122         disconnect_hadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1123
1124         GTK_OBJECT_CLASS(parent_class)->destroy (obj);
1125 }
1126
1127 /* INTERNAL METHODS */
1128
1129 static GtkAdjustment *
1130 get_vadjustment (ModestGtkhtmlMsgView *self)
1131 {
1132         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1133
1134         if (!priv->vadj)
1135                 set_vadjustment (self, NULL);
1136
1137         return priv->vadj;
1138
1139 }
1140
1141 static GtkAdjustment *
1142 get_hadjustment (ModestGtkhtmlMsgView *self)
1143 {
1144         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1145
1146         if (!priv->hadj)
1147                 set_hadjustment (self, NULL);
1148
1149         return priv->hadj;
1150
1151 }
1152
1153 static void
1154 set_hadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *hadj)
1155 {
1156         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1157         gboolean value_changed;
1158
1159         if (hadj && hadj == priv->hadj)
1160                 return;
1161
1162         if (!hadj)
1163                 hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0,0.0,0.0,0.0,0.0,0.0));
1164         disconnect_hadjustment (self);
1165         g_object_ref (G_OBJECT (hadj));
1166         gtk_object_sink (GTK_OBJECT (hadj));
1167         priv->hadj = hadj;
1168         set_hadjustment_values (self, &value_changed);
1169
1170         g_signal_connect (hadj, "value_changed", G_CALLBACK (adjustment_value_changed),
1171                           self);
1172
1173         gtk_adjustment_changed (hadj);
1174         if (value_changed)
1175                 gtk_adjustment_value_changed (hadj);
1176         else
1177                 adjustment_value_changed (hadj, self);
1178
1179         g_object_notify (G_OBJECT (self), "hadjustment");
1180 }
1181
1182 static void
1183 set_vadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *vadj)
1184 {
1185         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1186         gboolean value_changed;
1187
1188         if (vadj && vadj == priv->vadj)
1189                 return;
1190
1191         if (!vadj)
1192                 vadj = (GtkAdjustment *) gtk_adjustment_new (0.0,0.0,0.0,0.0,0.0,0.0);
1193         disconnect_vadjustment (self);
1194         g_object_ref (G_OBJECT (vadj));
1195         gtk_object_sink (GTK_OBJECT (vadj));
1196         priv->vadj = vadj;
1197         set_vadjustment_values (self, &value_changed);
1198
1199         g_signal_connect (vadj, "value_changed", G_CALLBACK (adjustment_value_changed),
1200                           self);
1201
1202         gtk_adjustment_changed (vadj);
1203         if (value_changed)
1204                 gtk_adjustment_value_changed (vadj);
1205         else
1206                 adjustment_value_changed (vadj, self);
1207
1208         g_object_notify (G_OBJECT (self), "vadjustment");
1209 }
1210
1211 static void
1212 set_shadow_type (ModestGtkhtmlMsgView *self,
1213                  GtkShadowType shadow_type)
1214 {
1215         ModestGtkhtmlMsgViewPrivate *priv;
1216         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1217
1218         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1219
1220         if (priv->shadow_type != shadow_type) {
1221                 priv->shadow_type = shadow_type;
1222
1223                 if (GTK_WIDGET_VISIBLE (self)) {
1224                         gtk_widget_size_allocate (GTK_WIDGET (self), &(GTK_WIDGET (self)->allocation));
1225                         gtk_widget_queue_draw (GTK_WIDGET (self));
1226                 }
1227                 g_object_notify (G_OBJECT (self), "shadow-type");
1228         }
1229 }
1230
1231 static GtkShadowType
1232 get_shadow_type (ModestGtkhtmlMsgView *self)
1233 {
1234         ModestGtkhtmlMsgViewPrivate *priv;
1235         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), GTK_SHADOW_NONE);
1236         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1237
1238         return priv->shadow_type;
1239 }
1240
1241 GtkWidget*
1242 modest_msg_view_new (TnyMsg *msg)
1243 {
1244         GObject *obj;
1245         ModestGtkhtmlMsgView* self;
1246
1247         obj  = G_OBJECT(g_object_new(MODEST_TYPE_GTKHTML_MSG_VIEW, NULL));
1248         self = MODEST_GTKHTML_MSG_VIEW(obj);
1249         tny_msg_view_set_msg (TNY_MSG_VIEW (self), msg);
1250
1251         return GTK_WIDGET(self);
1252 }
1253
1254 #ifdef MAEMO_CHANGES
1255 static void
1256 on_tap_and_hold (GtkWidget *widget,
1257                  gpointer data)
1258 {
1259         ModestGtkhtmlMsgView *self = (ModestGtkhtmlMsgView *) data;
1260         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1261
1262         g_signal_emit_by_name (G_OBJECT (self), "link-contextual", priv->last_url);
1263 }
1264 #endif
1265
1266 static void
1267 on_recpt_activated (ModestMailHeaderView *header_view,
1268                     const gchar *address,
1269                     ModestGtkhtmlMsgView *self)
1270 {
1271         g_signal_emit_by_name (G_OBJECT (self), "recpt-activated", address);
1272 }
1273
1274 static void
1275 on_attachment_activated (ModestAttachmentsView * att_view, TnyMimePart *mime_part, gpointer self)
1276 {
1277
1278         g_signal_emit_by_name (G_OBJECT(self), "attachment_clicked", mime_part);
1279 }
1280
1281 static gboolean
1282 on_activate_link (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *self)
1283 {
1284         gboolean result;
1285         g_return_val_if_fail (self, FALSE);
1286
1287         g_signal_emit_by_name (G_OBJECT(self), "activate-link", uri, &result);
1288
1289         return result;
1290 }
1291
1292
1293 static gboolean
1294 on_link_hover (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *self)
1295 {
1296         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1297         gboolean result;
1298
1299         g_free (priv->last_url);
1300         priv->last_url = g_strdup (uri);
1301
1302         g_signal_emit_by_name (G_OBJECT(self), "link-hover", uri, &result);
1303
1304         return result;
1305 }
1306
1307
1308
1309 static TnyMimePart *
1310 find_cid_image (TnyMsg *msg, const gchar *cid)
1311 {
1312         TnyMimePart *part = NULL;
1313         TnyList *parts;
1314         TnyIterator *iter;
1315
1316         g_return_val_if_fail (msg, NULL);
1317         g_return_val_if_fail (cid, NULL);
1318
1319         parts  = TNY_LIST (tny_simple_list_new());
1320
1321         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
1322         iter   = tny_list_create_iterator (parts);
1323
1324         while (!tny_iterator_is_done(iter)) {
1325                 const gchar *part_cid;
1326
1327                 part = TNY_MIME_PART(tny_iterator_get_current(iter));
1328                 part_cid = tny_mime_part_get_content_id (part);
1329
1330                 /* if there is no content id, try the content location;
1331                  * this is what Outlook seems to use when it converts
1332                  * it's internal richtext to html
1333                  */
1334                 if (!part_cid)
1335                         part_cid = tny_mime_part_get_content_location (part);
1336
1337                 if (part_cid && strcmp (cid, part_cid) == 0)
1338                         break;
1339
1340                 if (tny_mime_part_content_type_is (part, "multipart/related")) {
1341                         TnyList *related_parts = TNY_LIST (tny_simple_list_new ());
1342                         TnyIterator *related_iter = NULL;
1343                         TnyMimePart *related_part = NULL;
1344
1345                         tny_mime_part_get_parts (part, related_parts);
1346                         related_iter = tny_list_create_iterator (related_parts);
1347
1348                         while (!tny_iterator_is_done (related_iter)) {
1349                                 related_part = TNY_MIME_PART (tny_iterator_get_current (related_iter));
1350                                 part_cid = tny_mime_part_get_content_id (related_part);
1351                                 if (part_cid && strcmp (cid, part_cid) == 0) {
1352                                         break;
1353                                 }
1354                                 g_object_unref (related_part);
1355                                 related_part = NULL;
1356                                 tny_iterator_next (related_iter);
1357                         }
1358
1359                         g_object_unref (related_iter);
1360                         g_object_unref (related_parts);
1361                         if (related_part != NULL) {
1362                                 g_object_unref (part);
1363                                 part = related_part;
1364                                 break;
1365                         }
1366                 }
1367
1368                 g_object_unref (G_OBJECT(part));
1369
1370                 part = NULL;
1371                 tny_iterator_next (iter);
1372         }
1373
1374         g_object_unref (G_OBJECT(iter));
1375         g_object_unref (G_OBJECT(parts));
1376
1377         return part;
1378 }
1379
1380
1381 static gboolean
1382 on_fetch_url (GtkWidget *widget, const gchar *uri,
1383               TnyStream *stream, ModestGtkhtmlMsgView *self)
1384 {
1385         ModestGtkhtmlMsgViewPrivate *priv;
1386         const gchar* my_uri;
1387         TnyMimePart *part = NULL;
1388
1389         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1390
1391         /*
1392          * we search for either something starting with cid:, or something
1393          * with no prefix at all; this latter case occurs when sending mails
1394          * with MS Outlook in rich-text mode, and 'attach-as-object
1395          */
1396         if (g_str_has_prefix (uri, "cid:"))
1397                 my_uri = uri + 4;  /* +4 ==> skip "cid:" */
1398         else
1399                 my_uri = uri;
1400
1401         /* now try to find the embedded image */
1402         part = find_cid_image (priv->msg, my_uri);
1403         if (!part) {
1404                 g_printerr ("modest: %s: '%s' not found\n", __FUNCTION__, my_uri);
1405                 return FALSE;
1406         }
1407
1408         tny_mime_part_decode_to_stream ((TnyMimePart*)part, stream, NULL);
1409         g_object_unref (G_OBJECT(part));
1410         return TRUE;
1411 }
1412
1413 static void
1414 set_message (ModestGtkhtmlMsgView *self, TnyMsg *msg)
1415 {
1416         TnyMimePart *body;
1417         ModestGtkhtmlMsgViewPrivate *priv;
1418         TnyHeader *header;
1419         GtkAdjustment *html_vadj;
1420
1421         g_return_if_fail (self);
1422
1423         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(self);
1424         gtk_widget_set_no_show_all (priv->mail_header_view, FALSE);
1425
1426         html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
1427         html_vadj->upper = 0;
1428         html_vadj->page_size = 0;
1429         g_signal_emit_by_name (G_OBJECT (html_vadj), "changed");
1430
1431
1432         if (msg != priv->msg) {
1433                 if (priv->msg)
1434                         g_object_unref (G_OBJECT(priv->msg));
1435                 if (msg)
1436                         g_object_ref   (G_OBJECT(msg));
1437                 priv->msg = msg;
1438         }
1439
1440         if (!msg) {
1441                 tny_header_view_clear (TNY_HEADER_VIEW (priv->mail_header_view));
1442                 modest_attachments_view_set_message (MODEST_ATTACHMENTS_VIEW (priv->attachments_view), NULL);
1443                 gtk_widget_hide_all (priv->mail_header_view);
1444                 gtk_widget_hide_all (priv->attachments_box);
1445                 gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
1446                 tny_mime_part_view_clear (TNY_MIME_PART_VIEW (priv->body_view));
1447                 gtk_widget_queue_resize (GTK_WIDGET(self));
1448                 gtk_widget_queue_draw (GTK_WIDGET(self));
1449                 return;
1450         }
1451
1452         header = tny_msg_get_header (msg);
1453         tny_header_view_set_header (TNY_HEADER_VIEW (priv->mail_header_view), header);
1454         g_object_unref (header);
1455
1456         modest_attachments_view_set_message (MODEST_ATTACHMENTS_VIEW(priv->attachments_view),
1457                                              msg);
1458
1459         body = modest_tny_msg_find_body_part (msg, TRUE);
1460         if (body) {
1461                 tny_mime_part_view_set_part (TNY_MIME_PART_VIEW (priv->body_view), body);
1462
1463                 if(modest_attachments_view_has_attachments (MODEST_ATTACHMENTS_VIEW (priv->attachments_view))) {
1464                         gtk_widget_show_all (priv->attachments_box);
1465                 } else {
1466                         gtk_widget_hide_all (priv->attachments_box);
1467                 }
1468
1469         } else
1470                 tny_mime_part_view_clear (TNY_MIME_PART_VIEW (priv->body_view));
1471
1472         gtk_widget_show (priv->body_view);
1473         gtk_widget_set_no_show_all (priv->attachments_box, TRUE);
1474         gtk_widget_show_all (priv->mail_header_view);
1475         gtk_widget_set_no_show_all (priv->attachments_box, FALSE);
1476         gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
1477         gtk_widget_queue_resize (GTK_WIDGET(self));
1478         gtk_widget_queue_draw (GTK_WIDGET(self));
1479
1480         if (priv->hadj != NULL)
1481                 priv->hadj->value = 0.0;
1482         if (priv->vadj != NULL)
1483                 priv->vadj->value = 0.0;
1484
1485         g_signal_emit_by_name (G_OBJECT (html_vadj), "changed");
1486
1487         /* This is a hack to force reallocation of scroll after drawing all the stuff. This
1488          * makes the html view get the proper and expected size and prevent being able to scroll
1489          * the buffer when it shouldn't be scrollable */
1490         g_object_ref (self);
1491         g_timeout_add (250, (GSourceFunc) idle_readjust_scroll, self);
1492 }
1493
1494
1495 static TnyMsg*
1496 get_message (ModestGtkhtmlMsgView *self)
1497 {
1498         TnyMsg *msg;
1499
1500         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), NULL);
1501
1502         msg = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(self)->msg;
1503
1504         if (msg)
1505                 g_object_ref (msg);
1506
1507         return msg;
1508 }
1509
1510 static gboolean
1511 is_empty (ModestGtkhtmlMsgView *self)
1512 {
1513         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1514
1515         return modest_mime_part_view_is_empty (MODEST_MIME_PART_VIEW (priv->body_view));
1516 }
1517
1518 static void
1519 set_zoom (ModestGtkhtmlMsgView *self, gdouble zoom)
1520 {
1521         ModestGtkhtmlMsgViewPrivate *priv;
1522
1523         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1524         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1525
1526         modest_zoomable_set_zoom (MODEST_ZOOMABLE(priv->body_view), zoom);
1527
1528         gtk_widget_queue_resize (priv->body_view);
1529 }
1530
1531 static gdouble
1532 get_zoom (ModestGtkhtmlMsgView *self)
1533 {
1534         ModestGtkhtmlMsgViewPrivate *priv;
1535
1536         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), 1.0);
1537         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1538
1539         return modest_zoomable_get_zoom (MODEST_ZOOMABLE (priv->body_view));
1540 }
1541
1542 static TnyHeaderFlags
1543 get_priority (ModestGtkhtmlMsgView *self)
1544 {
1545         ModestGtkhtmlMsgViewPrivate *priv;
1546
1547         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), 0);
1548
1549         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1550
1551         return modest_mail_header_view_get_priority (MODEST_MAIL_HEADER_VIEW (priv->mail_header_view));
1552 }
1553
1554 static void
1555 set_priority (ModestGtkhtmlMsgView *self, TnyHeaderFlags flags)
1556 {
1557         ModestGtkhtmlMsgViewPrivate *priv;
1558
1559         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1560         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1561
1562         modest_mail_header_view_set_priority (MODEST_MAIL_HEADER_VIEW (priv->mail_header_view), flags);
1563 }
1564
1565 /* INCREMENTAL SEARCH IMPLEMENTATION */
1566
1567 static gboolean
1568 search (ModestGtkhtmlMsgView *self, const gchar *search)
1569 {
1570         ModestGtkhtmlMsgViewPrivate *priv;
1571         gboolean result;
1572         GtkAdjustment *vadj, *tmp_vadj;
1573         gdouble y_offset;
1574
1575         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), FALSE);
1576
1577         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1578         vadj = gtk_layout_get_vadjustment (GTK_LAYOUT (priv->body_view));
1579         g_object_ref (vadj);
1580         tmp_vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, vadj->lower, vadj->upper, vadj->step_increment, 32.0, 32.0));
1581         gtk_layout_set_vadjustment (GTK_LAYOUT (priv->body_view), tmp_vadj);
1582         result = modest_isearch_view_search (MODEST_ISEARCH_VIEW (priv->body_view),
1583                                              search);
1584
1585         if (result) {
1586                 gint x, y, w, h;
1587                 gdouble offset_top, offset_bottom;
1588                 GtkAdjustment *adj;
1589                 if (modest_isearch_view_get_selection_area (MODEST_ISEARCH_VIEW (priv->body_view), &x, &y, &w, &h)) {
1590                         offset_top = (gdouble) (priv->headers_box->requisition.height + y);
1591                         offset_bottom = (gdouble) (priv->headers_box->requisition.height + y + h);
1592                         adj = GTK_ADJUSTMENT (priv->vadj);
1593                         if (offset_top < adj->value)
1594                                 gtk_adjustment_set_value (adj, offset_top + adj->page_increment - adj->page_size);
1595                         else if (offset_bottom > adj->value + adj->page_increment)
1596                                 gtk_adjustment_set_value (adj, offset_bottom - adj->page_increment);
1597                 }
1598         }
1599
1600         y_offset = tmp_vadj->value;
1601         gtk_layout_set_vadjustment (GTK_LAYOUT (priv->body_view), vadj);
1602         g_object_unref (vadj);
1603
1604         return result;
1605 }
1606
1607 static gboolean
1608 search_next (ModestGtkhtmlMsgView *self)
1609 {
1610         ModestGtkhtmlMsgViewPrivate *priv;
1611         gboolean result;
1612
1613         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), FALSE);
1614
1615         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1616         result = modest_isearch_view_search_next (MODEST_ISEARCH_VIEW (priv->body_view));
1617
1618         if (result) {
1619                 gint x, y, w, h;
1620                 gdouble offset_top, offset_bottom;
1621                 GtkAdjustment *adj;
1622
1623                 if (modest_isearch_view_get_selection_area (MODEST_ISEARCH_VIEW (priv->body_view), &x, &y, &w, &h)) {
1624                         offset_top = (gdouble) (priv->headers_box->requisition.height + y);
1625                         offset_bottom = (gdouble) (priv->headers_box->requisition.height + y + h);
1626                         adj = GTK_ADJUSTMENT (priv->vadj);
1627                         if (offset_top < adj->value)
1628                                 gtk_adjustment_set_value (adj, offset_top + adj->page_increment - adj->page_size);
1629                         else if (offset_bottom > adj->value + adj->page_increment)
1630                                 gtk_adjustment_set_value (adj, offset_bottom - adj->page_increment);
1631                 }
1632         }
1633         return result;
1634 }
1635
1636 static TnyList *
1637 get_selected_attachments (ModestGtkhtmlMsgView *self)
1638 {
1639         ModestGtkhtmlMsgViewPrivate *priv;
1640
1641         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), NULL);
1642         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1643
1644         return modest_attachments_view_get_selection (MODEST_ATTACHMENTS_VIEW (priv->attachments_view));
1645
1646 }
1647
1648 static TnyList *
1649 get_attachments (ModestGtkhtmlMsgView *self)
1650 {
1651         ModestGtkhtmlMsgViewPrivate *priv;
1652
1653         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), NULL);
1654         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1655
1656         return modest_attachments_view_get_attachments (MODEST_ATTACHMENTS_VIEW (priv->attachments_view));
1657
1658 }
1659
1660 static void
1661 grab_focus (ModestGtkhtmlMsgView *self)
1662 {
1663         ModestGtkhtmlMsgViewPrivate *priv = NULL;
1664
1665         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1666         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1667
1668         gtk_widget_grab_focus (priv->body_view);
1669 }
1670
1671 static void
1672 remove_attachment (ModestGtkhtmlMsgView *self, TnyMimePart *attachment)
1673 {
1674         ModestGtkhtmlMsgViewPrivate *priv;
1675
1676         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1677         g_return_if_fail (TNY_IS_MIME_PART (attachment));
1678         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1679
1680         modest_attachments_view_remove_attachment (MODEST_ATTACHMENTS_VIEW (priv->attachments_view),
1681                                                    attachment);
1682
1683 }
1684
1685 /* TNY MSG IMPLEMENTATION */
1686
1687 static void
1688 tny_msg_view_init (gpointer g, gpointer iface_data)
1689 {
1690         TnyMsgViewIface *klass = (TnyMsgViewIface *)g;
1691
1692         klass->get_msg_func = modest_msg_view_get_msg;
1693         klass->set_msg_func = modest_msg_view_set_msg;
1694         klass->set_unavailable_func = modest_msg_view_set_unavailable;
1695         klass->clear_func = modest_msg_view_clear;
1696         klass->create_mime_part_view_for_func = modest_msg_view_create_mime_part_view_for;
1697         klass->create_new_inline_viewer_func = modest_msg_view_create_new_inline_viewer;
1698
1699         return;
1700 }
1701
1702 static TnyMsg *
1703 modest_msg_view_get_msg (TnyMsgView *self)
1704 {
1705         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_msg_func (self);
1706 }
1707
1708 static TnyMsg *
1709 modest_msg_view_get_msg_default (TnyMsgView *self)
1710 {
1711         return TNY_MSG (tny_mime_part_view_get_part (TNY_MIME_PART_VIEW (self)));
1712 }
1713
1714 static void
1715 modest_msg_view_set_msg (TnyMsgView *self, TnyMsg *msg)
1716 {
1717         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_msg_func (self, msg);
1718 }
1719
1720 static void
1721 modest_msg_view_set_msg_default (TnyMsgView *self, TnyMsg *msg)
1722 {
1723
1724         tny_mime_part_view_set_part (TNY_MIME_PART_VIEW (self), TNY_MIME_PART (msg));
1725
1726         return;
1727 }
1728
1729 static void
1730 modest_msg_view_set_unavailable (TnyMsgView *self)
1731 {
1732         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_unavailable_func (self);
1733 }
1734
1735 static void
1736 modest_msg_view_set_unavailable_default (TnyMsgView *self)
1737 {
1738         tny_msg_view_clear (self);
1739
1740         return;
1741 }
1742
1743 static void
1744 modest_msg_view_clear (TnyMsgView *self)
1745 {
1746         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->clear_func (self);
1747 }
1748
1749 static void
1750 modest_msg_view_clear_default (TnyMsgView *self)
1751 {
1752         set_message (MODEST_GTKHTML_MSG_VIEW (self), NULL);
1753 }
1754
1755 static TnyMimePartView*
1756 modest_msg_view_create_mime_part_view_for (TnyMsgView *self, TnyMimePart *part)
1757 {
1758         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->create_mime_part_view_for_func (self, part);
1759 }
1760
1761 static TnyMimePartView*
1762 modest_msg_view_create_mime_part_view_for_default (TnyMsgView *self, TnyMimePart *part)
1763 {
1764         g_warning ("modest_msg_view_create_mime_part_view_for_default is not implemented");
1765         return NULL;
1766 }
1767
1768 static TnyMsgView*
1769 modest_msg_view_create_new_inline_viewer (TnyMsgView *self)
1770 {
1771         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->create_new_inline_viewer_func (self);
1772 }
1773
1774 static TnyMsgView*
1775 modest_msg_view_create_new_inline_viewer_default (TnyMsgView *self)
1776 {
1777         g_warning ("modest_msg_view_create_new_inline_viewer_default is not implemented");
1778
1779         return NULL;
1780 }
1781
1782 /* TNY MIME PART IMPLEMENTATION */
1783
1784 static void
1785 tny_mime_part_view_init (gpointer g, gpointer iface_data)
1786 {
1787         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
1788
1789         klass->get_part_func = modest_msg_view_mp_get_part;
1790         klass->set_part_func = modest_msg_view_mp_set_part;
1791         klass->clear_func = modest_msg_view_mp_clear;
1792
1793         return;
1794 }
1795
1796 static TnyMimePart*
1797 modest_msg_view_mp_get_part (TnyMimePartView *self)
1798 {
1799         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_part_func (self);
1800 }
1801
1802
1803 static TnyMimePart*
1804 modest_msg_view_mp_get_part_default (TnyMimePartView *self)
1805 {
1806         return TNY_MIME_PART (get_message (MODEST_GTKHTML_MSG_VIEW (self)));
1807 }
1808
1809 static void
1810 modest_msg_view_mp_set_part (TnyMimePartView *self,
1811                              TnyMimePart *part)
1812 {
1813         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_part_func (self, part);
1814 }
1815
1816 static void
1817 modest_msg_view_mp_set_part_default (TnyMimePartView *self,
1818                                      TnyMimePart *part)
1819 {
1820         g_return_if_fail ((part == NULL) || TNY_IS_MSG (part));
1821
1822         set_message (MODEST_GTKHTML_MSG_VIEW (self), TNY_MSG (part));
1823 }
1824
1825 static void
1826 modest_msg_view_mp_clear (TnyMimePartView *self)
1827 {
1828         tny_msg_view_clear (TNY_MSG_VIEW (self));
1829 }
1830
1831 /* MODEST MIME PART VIEW IMPLEMENTATION */
1832
1833 static void
1834 modest_mime_part_view_init (gpointer g, gpointer iface_data)
1835 {
1836         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
1837
1838         klass->is_empty_func = modest_msg_view_mp_is_empty;
1839
1840         return;
1841 }
1842
1843 static gboolean
1844 modest_msg_view_mp_is_empty (ModestMimePartView *self)
1845 {
1846         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->is_empty_func (self);
1847 }
1848
1849 static gboolean
1850 modest_msg_view_mp_is_empty_default (ModestMimePartView *self)
1851 {
1852         return is_empty (MODEST_GTKHTML_MSG_VIEW (self));
1853 }
1854
1855 /* MODEST ZOOMABLE IMPLEMENTATION */
1856 static void
1857 modest_zoomable_init (gpointer g, gpointer iface_data)
1858 {
1859         ModestZoomableIface *klass = (ModestZoomableIface *)g;
1860
1861         klass->get_zoom_func = modest_msg_view_get_zoom;
1862         klass->set_zoom_func = modest_msg_view_set_zoom;
1863         klass->zoom_minus_func = modest_msg_view_zoom_minus;
1864         klass->zoom_plus_func = modest_msg_view_zoom_plus;
1865
1866         return;
1867 }
1868
1869 static gdouble
1870 modest_msg_view_get_zoom (ModestZoomable *self)
1871 {
1872         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_zoom_func (self);
1873 }
1874
1875 static gdouble
1876 modest_msg_view_get_zoom_default (ModestZoomable *self)
1877 {
1878         return get_zoom (MODEST_GTKHTML_MSG_VIEW (self));
1879 }
1880
1881 static void
1882 modest_msg_view_set_zoom (ModestZoomable *self, gdouble value)
1883 {
1884         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
1885 }
1886
1887 static void
1888 modest_msg_view_set_zoom_default (ModestZoomable *self, gdouble value)
1889 {
1890         set_zoom (MODEST_GTKHTML_MSG_VIEW (self), value);
1891 }
1892
1893 static gboolean
1894 modest_msg_view_zoom_minus (ModestZoomable *self)
1895 {
1896         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->zoom_minus_func (self);
1897 }
1898
1899 static gboolean
1900 modest_msg_view_zoom_minus_default (ModestZoomable *self)
1901 {
1902         /* operation not supported in ModestMsgView */
1903         return FALSE;
1904 }
1905
1906 static gboolean
1907 modest_msg_view_zoom_plus (ModestZoomable *self)
1908 {
1909         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->zoom_plus_func (self);
1910 }
1911
1912 static gboolean
1913 modest_msg_view_zoom_plus_default (ModestZoomable *self)
1914 {
1915         /* operation not supported in ModestMsgView */
1916         return FALSE;
1917 }
1918
1919 /* MODEST ISEARCH VIEW IMPLEMENTATION */
1920 static void
1921 modest_isearch_view_init (gpointer g, gpointer iface_data)
1922 {
1923         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
1924
1925         klass->search_func = modest_msg_view_search;
1926         klass->search_next_func = modest_msg_view_search_next;
1927
1928         return;
1929 }
1930
1931 static gboolean
1932 modest_msg_view_search (ModestISearchView *self, const gchar *string)
1933 {
1934         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->search_func (self, string);
1935 }
1936
1937 static gboolean
1938 modest_msg_view_search_default (ModestISearchView *self, const gchar *string)
1939 {
1940         return search (MODEST_GTKHTML_MSG_VIEW (self), string);
1941 }
1942
1943 static gboolean
1944 modest_msg_view_search_next (ModestISearchView *self)
1945 {
1946         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->search_next_func (self);
1947 }
1948
1949 static gboolean
1950 modest_msg_view_search_next_default (ModestISearchView *self)
1951 {
1952         return search_next (MODEST_GTKHTML_MSG_VIEW (self));
1953 }
1954
1955 /* MODEST MSG VIEW IMPLEMENTATION */
1956 static void
1957 modest_msg_view_init (gpointer g, gpointer iface_data)
1958 {
1959         ModestMsgViewIface *klass = (ModestMsgViewIface *)g;
1960
1961         klass->get_vadjustment_func = modest_gtkhtml_msg_view_get_vadjustment;
1962         klass->get_hadjustment_func = modest_gtkhtml_msg_view_get_hadjustment;
1963         klass->set_vadjustment_func = modest_gtkhtml_msg_view_set_vadjustment;
1964         klass->set_hadjustment_func = modest_gtkhtml_msg_view_set_hadjustment;
1965         klass->set_shadow_type_func = modest_gtkhtml_msg_view_set_shadow_type;
1966         klass->get_shadow_type_func = modest_gtkhtml_msg_view_get_shadow_type;
1967         klass->get_priority_func = modest_gtkhtml_msg_view_get_priority;
1968         klass->set_priority_func = modest_gtkhtml_msg_view_set_priority;
1969         klass->get_selected_attachments_func = modest_gtkhtml_msg_view_get_selected_attachments;
1970         klass->get_attachments_func = modest_gtkhtml_msg_view_get_attachments;
1971         klass->grab_focus_func = modest_gtkhtml_msg_view_grab_focus;
1972         klass->remove_attachment_func = modest_gtkhtml_msg_view_remove_attachment;
1973
1974         return;
1975 }
1976
1977 static GtkAdjustment*
1978 modest_gtkhtml_msg_view_get_vadjustment (ModestMsgView *self)
1979 {
1980         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_vadjustment_func (self);
1981 }
1982
1983 static GtkAdjustment*
1984 modest_gtkhtml_msg_view_get_vadjustment_default (ModestMsgView *self)
1985 {
1986         return get_vadjustment (MODEST_GTKHTML_MSG_VIEW (self));
1987 }
1988
1989 static GtkAdjustment*
1990 modest_gtkhtml_msg_view_get_hadjustment (ModestMsgView *self)
1991 {
1992         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_hadjustment_func (self);
1993 }
1994
1995 static GtkAdjustment*
1996 modest_gtkhtml_msg_view_get_hadjustment_default (ModestMsgView *self)
1997 {
1998         return get_hadjustment (MODEST_GTKHTML_MSG_VIEW (self));
1999 }
2000
2001 static void
2002 modest_gtkhtml_msg_view_set_vadjustment (ModestMsgView *self, GtkAdjustment *adj)
2003 {
2004         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_vadjustment_func (self, adj);
2005 }
2006
2007 static void
2008 modest_gtkhtml_msg_view_set_vadjustment_default (ModestMsgView *self, GtkAdjustment *adj)
2009 {
2010         set_vadjustment (MODEST_GTKHTML_MSG_VIEW (self), adj);
2011 }
2012
2013 static void
2014 modest_gtkhtml_msg_view_set_hadjustment (ModestMsgView *self, GtkAdjustment *adj)
2015 {
2016         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_hadjustment_func (self, adj);
2017 }
2018
2019 static void
2020 modest_gtkhtml_msg_view_set_hadjustment_default (ModestMsgView *self, GtkAdjustment *adj)
2021 {
2022         set_hadjustment (MODEST_GTKHTML_MSG_VIEW (self), adj);
2023 }
2024
2025 static void
2026 modest_gtkhtml_msg_view_set_shadow_type (ModestMsgView *self, GtkShadowType type)
2027 {
2028         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_shadow_type_func (self, type);
2029 }
2030
2031 static void
2032 modest_gtkhtml_msg_view_set_shadow_type_default (ModestMsgView *self, GtkShadowType type)
2033 {
2034         set_shadow_type (MODEST_GTKHTML_MSG_VIEW (self), type);
2035 }
2036
2037 static GtkShadowType
2038 modest_gtkhtml_msg_view_get_shadow_type (ModestMsgView *self)
2039 {
2040         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_shadow_type_func (self);
2041 }
2042
2043 static GtkShadowType
2044 modest_gtkhtml_msg_view_get_shadow_type_default (ModestMsgView *self)
2045 {
2046         return get_shadow_type (MODEST_GTKHTML_MSG_VIEW (self));
2047 }
2048
2049 static void
2050 modest_gtkhtml_msg_view_set_priority (ModestMsgView *self, TnyHeaderFlags flags)
2051 {
2052         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_priority_func (self, flags);
2053 }
2054
2055 static void
2056 modest_gtkhtml_msg_view_set_priority_default (ModestMsgView *self, TnyHeaderFlags flags)
2057 {
2058         set_priority (MODEST_GTKHTML_MSG_VIEW (self), flags);
2059 }
2060
2061 static TnyHeaderFlags
2062 modest_gtkhtml_msg_view_get_priority (ModestMsgView *self)
2063 {
2064         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_priority_func (self);
2065 }
2066
2067 static TnyHeaderFlags
2068 modest_gtkhtml_msg_view_get_priority_default (ModestMsgView *self)
2069 {
2070         return get_priority (MODEST_GTKHTML_MSG_VIEW (self));
2071 }
2072
2073 static TnyList*
2074 modest_gtkhtml_msg_view_get_selected_attachments (ModestMsgView *self)
2075 {
2076         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_selected_attachments_func (self);
2077 }
2078
2079 static TnyList*
2080 modest_gtkhtml_msg_view_get_selected_attachments_default (ModestMsgView *self)
2081 {
2082         return get_selected_attachments (MODEST_GTKHTML_MSG_VIEW (self));
2083 }
2084
2085 static TnyList*
2086 modest_gtkhtml_msg_view_get_attachments (ModestMsgView *self)
2087 {
2088         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_attachments_func (self);
2089 }
2090
2091 static TnyList*
2092 modest_gtkhtml_msg_view_get_attachments_default (ModestMsgView *self)
2093 {
2094         return get_attachments (MODEST_GTKHTML_MSG_VIEW (self));
2095 }
2096
2097 static void
2098 modest_gtkhtml_msg_view_grab_focus (ModestMsgView *self)
2099 {
2100         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->grab_focus_func (self);
2101 }
2102
2103 static void
2104 modest_gtkhtml_msg_view_grab_focus_default (ModestMsgView *self)
2105 {
2106         grab_focus (MODEST_GTKHTML_MSG_VIEW (self));
2107 }
2108
2109 static void
2110 modest_gtkhtml_msg_view_remove_attachment (ModestMsgView *self, TnyMimePart *attachment)
2111 {
2112         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->remove_attachment_func (self, attachment);
2113 }
2114
2115 static void
2116 modest_gtkhtml_msg_view_remove_attachment_default (ModestMsgView *self, TnyMimePart *attachment)
2117 {
2118         remove_attachment (MODEST_GTKHTML_MSG_VIEW (self), attachment);
2119 }