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