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 #include <tny-vfs-stream.h>
  40
  41 #include <modest-tny-msg.h>
  42 #include <modest-text-utils.h>
  43 #include <widgets/modest-msg-view.h>
  44 #include <widgets/modest-mail-header-view.h>
  45 #include <widgets/modest-attachments-view.h>
  46 #include <modest-marshal.h>
  47 #include <widgets/modest-gtkhtml-mime-part-view.h>
  48 #include <widgets/modest-gtkhtml-msg-view.h>
  49 #include <widgets/modest-isearch-view.h>
  50
  51 /* FIXNE: we should have no maemo-deps in widgets/ */
  52 #ifdef MODEST_PLATFORM_MAEMO
  53 #include "maemo/modest-hildon-includes.h"
  54 #endif /*MODEST_PLATFORM_MAEMO*/
  55
  56
  57 /* 'private'/'protected' functions */
  58 static void     modest_gtkhtml_msg_view_class_init   (ModestGtkhtmlMsgViewClass *klass);
  59 static void     tny_msg_view_init (gpointer g, gpointer iface_data);
  60 static void     tny_mime_part_view_init (gpointer g, gpointer iface_data);
  61 static void     modest_mime_part_view_init (gpointer g, gpointer iface_data);
  62 static void     modest_zoomable_init (gpointer g, gpointer iface_data);
  63 static void     modest_isearch_view_init (gpointer g, gpointer iface_data);
  64 static void     modest_msg_view_init (gpointer g, gpointer iface_data);
  65 static void     modest_gtkhtml_msg_view_init         (ModestGtkhtmlMsgView *obj);
  66 static void     modest_gtkhtml_msg_view_finalize     (GObject *obj);
  67 static void     modest_gtkhtml_msg_view_destroy     (GtkObject *obj);
  68 static void     set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
  69 static void     get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
  70
  71 /* headers signals */
  72 static void on_recpt_activated (ModestMailHeaderView *header_view, const gchar *address, ModestGtkhtmlMsgView *msg_view);
  73 static void on_attachment_activated (ModestAttachmentsView * att_view, TnyMimePart *mime_part, gpointer userdata);
  74
  75 /* body view signals */
  76 static gboolean on_activate_link (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *msg_view);
  77 static gboolean on_fetch_url (GtkWidget *widget, const gchar *uri, TnyStream *stream,
  78                               ModestGtkhtmlMsgView *msg_view);
  79 static gboolean on_link_hover (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *msg_view);
  80
  81 #ifdef MAEMO_CHANGES
  82 static void     on_tap_and_hold (GtkWidget *widget, gpointer userdata);
  83 #endif /*MAEMO_CHANGES*/
  84
  85
  86 /* size allocation and drawing handlers */
  87 static void get_view_allocation (ModestGtkhtmlMsgView *msg_view, GtkAllocation *allocation);
  88 static void size_request (GtkWidget *widget, GtkRequisition *req);
  89 static void size_allocate (GtkWidget *widget, GtkAllocation *alloc);
  90 static void realize (GtkWidget *widget);
  91 static void unrealize (GtkWidget *widget);
  92 static gint expose (GtkWidget *widget, GdkEventExpose *event);
  93 static void reclamp_adjustment (GtkAdjustment *adj, gboolean *value_changed);
  94 static void set_hadjustment_values (ModestGtkhtmlMsgView *msg_view, gboolean *value_changed);
  95 static void set_scroll_adjustments (ModestGtkhtmlMsgView *msg_view, GtkAdjustment *hadj, GtkAdjustment *vadj);
  96 static void adjustment_value_changed (GtkAdjustment *adj, gpointer data);
  97 static void html_adjustment_changed (GtkAdjustment *adj, gpointer data);
  98 static void disconnect_vadjustment (ModestGtkhtmlMsgView *obj);
  99 static void disconnect_hadjustment (ModestGtkhtmlMsgView *obj);
 100 static gboolean idle_readjust_scroll (ModestGtkhtmlMsgView *obj);
 101
 102 /* GtkContainer methods */
 103 static void forall (GtkContainer *container, gboolean include_internals,
 104                     GtkCallback callback, gpointer userdata);
 105 static void container_remove (GtkContainer *container, GtkWidget *widget);
 106
 107 /* TnyMimePartView implementation */
 108 static void modest_msg_view_mp_clear (TnyMimePartView *self);
 109 static void modest_msg_view_mp_set_part (TnyMimePartView *self, TnyMimePart *part);
 110 static void modest_msg_view_mp_set_part_default (TnyMimePartView *self, TnyMimePart *part);
 111 static TnyMimePart* modest_msg_view_mp_get_part (TnyMimePartView *self);
 112 static TnyMimePart* modest_msg_view_mp_get_part_default (TnyMimePartView *self);
 113 /* ModestMimePartView implementation */
 114 static gboolean modest_msg_view_mp_is_empty (ModestMimePartView *self);
 115 static gboolean modest_msg_view_mp_is_empty_default (ModestMimePartView *self);
 116 /* TnyMsgView implementation */
 117 static TnyMsg *modest_msg_view_get_msg (TnyMsgView *self);
 118 static TnyMsg *modest_msg_view_get_msg_default (TnyMsgView *self);
 119 static void modest_msg_view_set_msg (TnyMsgView *self, TnyMsg *msg);
 120 static void modest_msg_view_set_msg_default (TnyMsgView *self, TnyMsg *msg);
 121 static void modest_msg_view_clear (TnyMsgView *self);
 122 static void modest_msg_view_clear_default (TnyMsgView *self);
 123 static void modest_msg_view_set_unavailable (TnyMsgView *self);
 124 static void modest_msg_view_set_unavailable_default (TnyMsgView *self);
 125 static TnyMimePartView *modest_msg_view_create_mime_part_view_for (TnyMsgView *self, TnyMimePart *part);
 126 static TnyMimePartView *modest_msg_view_create_mime_part_view_for_default (TnyMsgView *self, TnyMimePart *part);
 127 static TnyMsgView *modest_msg_view_create_new_inline_viewer (TnyMsgView *self);
 128 static TnyMsgView *modest_msg_view_create_new_inline_viewer_default (TnyMsgView *self);
 129 /* ModestZoomable implementation */
 130 static gdouble modest_msg_view_get_zoom (ModestZoomable *self);
 131 static void modest_msg_view_set_zoom (ModestZoomable *self, gdouble value);
 132 static gboolean modest_msg_view_zoom_minus (ModestZoomable *self);
 133 static gboolean modest_msg_view_zoom_plus (ModestZoomable *self);
 134 static gdouble modest_msg_view_get_zoom_default (ModestZoomable *self);
 135 static void modest_msg_view_set_zoom_default (ModestZoomable *self, gdouble value);
 136 static gboolean modest_msg_view_zoom_minus_default (ModestZoomable *self);
 137 static gboolean modest_msg_view_zoom_plus_default (ModestZoomable *self);
 138 /* ModestISearchView implementation */
 139 static gboolean modest_msg_view_search (ModestISearchView *self, const gchar *string);
 140 static gboolean modest_msg_view_search_default (ModestISearchView *self, const gchar *string);
 141 static gboolean modest_msg_view_search_next (ModestISearchView *self);
 142 static gboolean modest_msg_view_search_next_default (ModestISearchView *self);
 143 /* ModestMsgView implementation */
 144 static GtkAdjustment *modest_gtkhtml_msg_view_get_vadjustment (ModestMsgView *self);
 145 static GtkAdjustment *modest_gtkhtml_msg_view_get_hadjustment (ModestMsgView *self);
 146 static void modest_gtkhtml_msg_view_set_vadjustment (ModestMsgView *self, GtkAdjustment *vadj);
 147 static void modest_gtkhtml_msg_view_set_hadjustment (ModestMsgView *self, GtkAdjustment *hadj);
 148 static void modest_gtkhtml_msg_view_set_shadow_type (ModestMsgView *self, GtkShadowType type);
 149 static GtkShadowType modest_gtkhtml_msg_view_get_shadow_type (ModestMsgView *self);
 150 static TnyHeaderFlags modest_gtkhtml_msg_view_get_priority (ModestMsgView *self);
 151 static void modest_gtkhtml_msg_view_set_priority (ModestMsgView *self, TnyHeaderFlags flags);
 152 static GList *modest_gtkhtml_msg_view_get_selected_attachments (ModestMsgView *self);
 153 static GList *modest_gtkhtml_msg_view_get_attachments (ModestMsgView *self);
 154 static void modest_gtkhtml_msg_view_grab_focus (ModestMsgView *self);
 155 static void modest_gtkhtml_msg_view_remove_attachment (ModestMsgView *view, TnyMimePart *attachment);
 156 static GtkAdjustment *modest_gtkhtml_msg_view_get_vadjustment_default (ModestMsgView *self);
 157 static GtkAdjustment *modest_gtkhtml_msg_view_get_hadjustment_default (ModestMsgView *self);
 158 static void modest_gtkhtml_msg_view_set_vadjustment_default (ModestMsgView *self, GtkAdjustment *vadj);
 159 static void modest_gtkhtml_msg_view_set_hadjustment_default (ModestMsgView *self, GtkAdjustment *hadj);
 160 static void modest_gtkhtml_msg_view_set_shadow_type_default (ModestMsgView *self, GtkShadowType type);
 161 static GtkShadowType modest_gtkhtml_msg_view_get_shadow_type_default (ModestMsgView *self);
 162 static TnyHeaderFlags modest_gtkhtml_msg_view_get_priority_default (ModestMsgView *self);
 163 static void modest_gtkhtml_msg_view_set_priority_default (ModestMsgView *self, TnyHeaderFlags flags);
 164 static GList *modest_gtkhtml_msg_view_get_selected_attachments_default (ModestMsgView *self);
 165 static GList *modest_gtkhtml_msg_view_get_attachments_default (ModestMsgView *self);
 166 static void modest_gtkhtml_msg_view_grab_focus_default (ModestMsgView *self);
 167 static void modest_gtkhtml_msg_view_remove_attachment_default (ModestMsgView *view, TnyMimePart *attachment);
 168
 169 /* internal api */
 170 static TnyMsg   *get_message   (ModestGtkhtmlMsgView *self);
 171 static void     set_message    (ModestGtkhtmlMsgView *self, TnyMsg *tny_msg);
 172 static gboolean is_empty       (ModestGtkhtmlMsgView *self);
 173 static void     set_zoom       (ModestGtkhtmlMsgView *self, gdouble zoom);
 174 static gdouble  get_zoom       (ModestGtkhtmlMsgView *self);
 175 static gboolean search         (ModestGtkhtmlMsgView *self, const gchar *search);
 176 static gboolean search_next    (ModestGtkhtmlMsgView *self);
 177 static GtkAdjustment *get_vadjustment (ModestGtkhtmlMsgView *self);
 178 static GtkAdjustment *get_hadjustment (ModestGtkhtmlMsgView *self);
 179 static void set_vadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *vadj);
 180 static void set_hadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *hadj);
 181 static void set_shadow_type (ModestGtkhtmlMsgView *self, GtkShadowType type);
 182 static GtkShadowType get_shadow_type (ModestGtkhtmlMsgView *self);
 183 static TnyHeaderFlags get_priority (ModestGtkhtmlMsgView *self);
 184 static void set_priority (ModestGtkhtmlMsgView *self, TnyHeaderFlags flags);
 185 static GList *get_selected_attachments (ModestGtkhtmlMsgView *self);
 186 static GList *get_attachments (ModestGtkhtmlMsgView *self);
 187 static void grab_focus (ModestGtkhtmlMsgView *self);
 188 static void remove_attachment (ModestGtkhtmlMsgView *view, TnyMimePart *attachment);
 189
 190 /* list properties */
 191 enum {
 192         PROP_0,
 193         PROP_HADJUSTMENT,
 194         PROP_VADJUSTMENT,
 195         PROP_SHADOW_TYPE
 196 };
 197
 198 typedef struct _ModestGtkhtmlMsgViewPrivate ModestGtkhtmlMsgViewPrivate;
 199 struct _ModestGtkhtmlMsgViewPrivate {
 200         GtkWidget   *body_view;
 201         GtkWidget   *mail_header_view;
 202         GtkWidget   *attachments_view;
 203
 204         TnyMsg      *msg;
 205
 206         /* embedded elements */
 207         GtkWidget   *headers_box;
 208         GtkWidget   *html_scroll;
 209         GtkWidget   *attachments_box;
 210
 211         /* internal adjustments for set_scroll_adjustments */
 212         GtkAdjustment *hadj;
 213         GtkAdjustment *vadj;
 214         GtkShadowType shadow_type;
 215
 216         /* gdk windows for drawing */
 217         GdkWindow *view_window;
 218         GdkWindow *headers_window;
 219         GdkWindow *html_window;
 220
 221         /* zoom */
 222         gdouble current_zoom;
 223
 224         /* link click management */
 225         gchar *last_url;
 226 };
 227
 228 #define MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 229                                                                                  MODEST_TYPE_GTKHTML_MSG_VIEW, \
 230                                                                                  ModestGtkhtmlMsgViewPrivate))
 231
 232 /* globals */
 233 static GtkContainerClass *parent_class = NULL;
 234
 235 GType
 236 modest_gtkhtml_msg_view_get_type (void)
 237 {
 238         static GType my_type = 0;
 239         if (!my_type) {
 240                 static const GTypeInfo my_info = {
 241                         sizeof(ModestGtkhtmlMsgViewClass),
 242                         NULL,           /* base init */
 243                         NULL,           /* base finalize */
 244                         (GClassInitFunc) modest_gtkhtml_msg_view_class_init,
 245                         NULL,           /* class finalize */
 246                         NULL,           /* class data */
 247                         sizeof(ModestGtkhtmlMsgView),
 248                         1,              /* n_preallocs */
 249                         (GInstanceInitFunc) modest_gtkhtml_msg_view_init,
 250                         NULL
 251                 };
 252                 static const GInterfaceInfo tny_msg_view_info =
 253                 {
 254                   (GInterfaceInitFunc) tny_msg_view_init, /* interface_init */
 255                   NULL,         /* interface_finalize */
 256                   NULL          /* interface_data */
 257                 };
 258
 259                 static const GInterfaceInfo tny_mime_part_view_info =
 260                 {
 261                   (GInterfaceInitFunc) tny_mime_part_view_init, /* interface_init */
 262                   NULL,         /* interface_finalize */
 263                   NULL          /* interface_data */
 264                 };
 265
 266                 static const GInterfaceInfo modest_mime_part_view_info =
 267                 {
 268                   (GInterfaceInitFunc) modest_mime_part_view_init, /* interface_init */
 269                   NULL,         /* interface_finalize */
 270                   NULL          /* interface_data */
 271                 };
 272
 273                 static const GInterfaceInfo modest_zoomable_info =
 274                 {
 275                   (GInterfaceInitFunc) modest_zoomable_init, /* interface_init */
 276                   NULL,         /* interface_finalize */
 277                   NULL          /* interface_data */
 278                 };
 279
 280                 static const GInterfaceInfo modest_isearch_view_info =
 281                 {
 282                   (GInterfaceInitFunc) modest_isearch_view_init, /* interface_init */
 283                   NULL,         /* interface_finalize */
 284                   NULL          /* interface_data */
 285                 };
 286
 287                 static const GInterfaceInfo modest_msg_view_info =
 288                 {
 289                   (GInterfaceInitFunc) modest_msg_view_init, /* interface_init */
 290                   NULL,         /* interface_finalize */
 291                   NULL          /* interface_data */
 292                 };
 293
 294                 my_type = g_type_register_static (GTK_TYPE_CONTAINER,
 295                                                   "ModestGtkhtmlMsgView",
 296                                                   &my_info, 0);
 297
 298                 g_type_add_interface_static (my_type, TNY_TYPE_MIME_PART_VIEW,
 299                         &tny_mime_part_view_info);
 300
 301                 g_type_add_interface_static (my_type, MODEST_TYPE_MIME_PART_VIEW,
 302                         &modest_mime_part_view_info);
 303
 304                 g_type_add_interface_static (my_type, TNY_TYPE_MSG_VIEW,
 305                         &tny_msg_view_info);
 306
 307                 g_type_add_interface_static (my_type, MODEST_TYPE_ZOOMABLE,
 308                         &modest_zoomable_info);
 309
 310                 g_type_add_interface_static (my_type, MODEST_TYPE_ISEARCH_VIEW,
 311                         &modest_isearch_view_info);
 312
 313                 g_type_add_interface_static (my_type, MODEST_TYPE_MSG_VIEW,
 314                         &modest_msg_view_info);
 315         }
 316         return my_type;
 317 }
 318
 319 static void
 320 modest_gtkhtml_msg_view_class_init (ModestGtkhtmlMsgViewClass *klass)
 321 {
 322         GObjectClass *gobject_class;
 323         GtkWidgetClass *widget_class;
 324         GtkObjectClass *gtkobject_class;
 325         GtkContainerClass *container_class;
 326         gobject_class = (GObjectClass*) klass;
 327         widget_class = (GtkWidgetClass *) klass;
 328         gtkobject_class = (GtkObjectClass *) klass;
 329         container_class = (GtkContainerClass *) klass;
 330
 331         parent_class            = g_type_class_peek_parent (klass);
 332         gobject_class->finalize = modest_gtkhtml_msg_view_finalize;
 333         gobject_class->set_property = set_property;
 334         gobject_class->get_property = get_property;
 335         gtkobject_class->destroy = modest_gtkhtml_msg_view_destroy;
 336
 337         widget_class->realize = realize;
 338         widget_class->unrealize = unrealize;
 339         widget_class->expose_event = expose;
 340         widget_class->size_request = size_request;
 341         widget_class->size_allocate = size_allocate;
 342
 343         container_class->forall = forall;
 344         container_class->remove = container_remove;
 345
 346         klass->set_scroll_adjustments = set_scroll_adjustments;
 347         klass->get_part_func = modest_msg_view_mp_get_part_default;
 348         klass->set_part_func = modest_msg_view_mp_set_part_default;
 349         klass->is_empty_func = modest_msg_view_mp_is_empty_default;
 350         klass->get_msg_func = modest_msg_view_get_msg_default;
 351         klass->set_msg_func = modest_msg_view_set_msg_default;
 352         klass->set_unavailable_func = modest_msg_view_set_unavailable_default;
 353         klass->clear_func = modest_msg_view_clear_default;
 354         klass->create_mime_part_view_for_func = modest_msg_view_create_mime_part_view_for_default;
 355         klass->create_new_inline_viewer_func = modest_msg_view_create_new_inline_viewer_default;
 356         klass->get_zoom_func = modest_msg_view_get_zoom_default;
 357         klass->set_zoom_func = modest_msg_view_set_zoom_default;
 358         klass->zoom_minus_func = modest_msg_view_zoom_minus_default;
 359         klass->zoom_plus_func = modest_msg_view_zoom_plus_default;
 360         klass->search_func = modest_msg_view_search_default;
 361         klass->search_next_func = modest_msg_view_search_next_default;
 362         klass->get_vadjustment_func = modest_gtkhtml_msg_view_get_vadjustment_default;
 363         klass->get_hadjustment_func = modest_gtkhtml_msg_view_get_hadjustment_default;
 364         klass->set_vadjustment_func = modest_gtkhtml_msg_view_set_vadjustment_default;
 365         klass->set_hadjustment_func = modest_gtkhtml_msg_view_set_hadjustment_default;
 366         klass->get_shadow_type_func = modest_gtkhtml_msg_view_get_shadow_type_default;
 367         klass->set_shadow_type_func = modest_gtkhtml_msg_view_set_shadow_type_default;
 368         klass->get_priority_func = modest_gtkhtml_msg_view_get_priority_default;
 369         klass->set_priority_func = modest_gtkhtml_msg_view_set_priority_default;
 370         klass->get_selected_attachments_func = modest_gtkhtml_msg_view_get_selected_attachments_default;
 371         klass->get_attachments_func = modest_gtkhtml_msg_view_get_attachments_default;
 372         klass->grab_focus_func = modest_gtkhtml_msg_view_grab_focus_default;
 373         klass->remove_attachment_func = modest_gtkhtml_msg_view_remove_attachment_default;
 374
 375         g_type_class_add_private (gobject_class, sizeof(ModestGtkhtmlMsgViewPrivate));
 376
 377         g_object_class_install_property (gobject_class,
 378                                          PROP_HADJUSTMENT,
 379                                          g_param_spec_object ("hadjustment",
 380                                                               _("Horizontal adjustment"),
 381                                                               _("GtkAdjustment with information of the horizontal visible position"),
 382                                                               GTK_TYPE_ADJUSTMENT,
 383                                                               G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
 384
 385         g_object_class_install_property (gobject_class,
 386                                          PROP_VADJUSTMENT,
 387                                          g_param_spec_object ("vadjustment",
 388                                                               _("Vertical adjustment"),
 389                                                               _("GtkAdjustment with information of the vertical visible position"),
 390                                                               GTK_TYPE_ADJUSTMENT,
 391                                                               G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
 392
 393         g_object_class_install_property (gobject_class,
 394                                          PROP_SHADOW_TYPE,
 395                                          g_param_spec_enum ("shadow_type",
 396                                                             _("Shadow type"),
 397                                                             _("Kind of shadow that's shown around the view"),
 398                                                             GTK_TYPE_SHADOW_TYPE,
 399                                                             GTK_SHADOW_IN,
 400                                                             G_PARAM_READABLE | G_PARAM_WRITABLE ));
 401
 402         widget_class->set_scroll_adjustments_signal =
 403                 g_signal_new ("set_scroll_adjustments",
 404                               G_OBJECT_CLASS_TYPE (gobject_class),
 405                               G_SIGNAL_RUN_LAST|G_SIGNAL_ACTION,
 406                               G_STRUCT_OFFSET (ModestGtkhtmlMsgViewClass, set_scroll_adjustments),
 407                               NULL, NULL,
 408                               modest_marshal_VOID__POINTER_POINTER,
 409                               G_TYPE_NONE, 2,
 410                               GTK_TYPE_ADJUSTMENT,
 411                               GTK_TYPE_ADJUSTMENT);
 412 }
 413
 414 static void
 415 set_property (GObject *object,
 416               guint prop_id,
 417               const GValue *value,
 418               GParamSpec *pspec)
 419 {
 420         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (object);
 421
 422         switch (prop_id) {
 423         case PROP_HADJUSTMENT:
 424                 set_hadjustment (self, g_value_get_object (value));
 425                 break;
 426         case PROP_VADJUSTMENT:
 427                 set_vadjustment (self, g_value_get_object (value));
 428                 break;
 429         case PROP_SHADOW_TYPE:
 430                 set_shadow_type (self, g_value_get_enum (value));
 431                 break;
 432         default:
 433                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 434                 break;
 435         }
 436 }
 437
 438 static void
 439 get_property (GObject *object,
 440               guint prop_id,
 441               GValue *value,
 442               GParamSpec *pspec)
 443 {
 444         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (object);
 445         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 446
 447         switch (prop_id) {
 448         case PROP_HADJUSTMENT:
 449                 g_value_set_object (value, priv->hadj);
 450                 break;
 451         case PROP_VADJUSTMENT:
 452                 g_value_set_object (value, priv->vadj);
 453                 break;
 454         case PROP_SHADOW_TYPE:
 455                 g_value_set_enum (value, priv->shadow_type);
 456                 break;
 457         default:
 458                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 459                 break;
 460         }
 461 }
 462
 463 static void
 464 disconnect_hadjustment (ModestGtkhtmlMsgView *self)
 465 {
 466         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 467
 468         if (priv->hadj) {
 469                 g_signal_handlers_disconnect_by_func(priv->hadj, adjustment_value_changed, self);
 470                 g_object_unref (priv->hadj);
 471                 priv->hadj = NULL;
 472         }
 473 }
 474
 475 static void
 476 disconnect_vadjustment (ModestGtkhtmlMsgView *self)
 477 {
 478         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 479
 480         if (priv->vadj) {
 481                 g_signal_handlers_disconnect_by_func(priv->vadj, adjustment_value_changed, self);
 482                 g_object_unref (priv->vadj);
 483                 priv->vadj = NULL;
 484         }
 485 }
 486
 487 static void
 488 get_view_allocation (ModestGtkhtmlMsgView *self, GtkAllocation *allocation)
 489 {
 490         /* This method gets the allocation of the widget in parent widget. It's the
 491            real position and size of the widget */
 492         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 493
 494         allocation->x = 0;
 495         allocation->y = 0;
 496
 497         if (priv->shadow_type != GTK_SHADOW_NONE) {
 498                 allocation->x = GTK_WIDGET (self)->style->xthickness;
 499                 allocation->y = GTK_WIDGET (self)->style->ythickness;
 500         }
 501
 502         allocation->width = MAX (1, (GTK_WIDGET (self)->allocation.width) - allocation->x * 2);
 503         allocation->height = MAX (1, (GTK_WIDGET (self)->allocation.height) - allocation->y * 2);
 504
 505 }
 506
 507 static void
 508 reclamp_adjustment (GtkAdjustment *adj,
 509                     gboolean *value_changed)
 510 {
 511         gdouble value = adj->value;
 512
 513         /* Correct value to be inside the expected values of a scroll */
 514
 515         value = CLAMP (value, 0, adj->upper - adj->page_size);
 516
 517         if (value != adj->value) {
 518                 adj->value = value;
 519                 if (value_changed)
 520                         *value_changed = TRUE;
 521         } else if (value_changed) {
 522                 *value_changed = FALSE;
 523         }
 524 }
 525
 526 static void
 527 set_hadjustment_values (ModestGtkhtmlMsgView *self,
 528                         gboolean *value_changed)
 529 {
 530         GtkAllocation view_allocation;
 531         GtkAdjustment *hadj = get_hadjustment (self);
 532
 533         get_view_allocation (self, &view_allocation);
 534         hadj->page_size = view_allocation.width;
 535         hadj->step_increment = view_allocation.width * 0.1;
 536         hadj->page_increment = view_allocation.width * 0.9;
 537
 538         hadj->lower = 0;
 539         hadj->upper = view_allocation.width;
 540
 541         reclamp_adjustment (hadj, value_changed);
 542
 543 }
 544
 545 static void
 546 set_vadjustment_values (ModestGtkhtmlMsgView *self,
 547                         gboolean *value_changed)
 548 {
 549         GtkAllocation view_allocation;
 550         GtkAdjustment *vadj = get_vadjustment (self);
 551         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 552         gint full_height = 0;
 553         GtkAdjustment *html_vadj;
 554
 555         get_view_allocation (self, &view_allocation);
 556         vadj->page_size = view_allocation.height;
 557         vadj->step_increment = view_allocation.height * 0.1;
 558         vadj->page_increment = view_allocation.height * 0.9;
 559
 560         vadj->lower = 0;
 561
 562         if (priv->headers_box && GTK_WIDGET_VISIBLE(priv->headers_box)) {
 563                 GtkRequisition child_requisition;
 564
 565                 gtk_widget_get_child_requisition (priv->headers_box, &child_requisition);
 566                 full_height = child_requisition.height;
 567         } else {
 568                 full_height = 0;
 569         }
 570
 571         /* Get the real height of the embedded html */
 572         if (priv->html_scroll && GTK_WIDGET_VISIBLE(priv->html_scroll)) {
 573                 html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
 574                 full_height += html_vadj->upper;
 575         }
 576
 577         vadj->upper = MAX (view_allocation.height, full_height);
 578
 579         reclamp_adjustment (vadj, value_changed);
 580
 581 }
 582
 583 static void
 584 set_scroll_adjustments (ModestGtkhtmlMsgView *self,
 585                         GtkAdjustment *hadj,
 586                         GtkAdjustment *vadj)
 587 {
 588         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 589         set_hadjustment (self, hadj);
 590         set_vadjustment (self, vadj);
 591
 592         gtk_container_set_focus_vadjustment (GTK_CONTAINER (priv->body_view), vadj);
 593 }
 594
 595 static void
 596 realize (GtkWidget *widget)
 597 {
 598         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (widget);
 599         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 600         GtkAdjustment *hadj = get_hadjustment (self);
 601         GtkAdjustment *vadj = get_vadjustment (self);
 602         GdkWindowAttr attributes;
 603         gint event_mask;
 604         gint attributes_mask;
 605         GtkAllocation view_allocation;
 606
 607         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 608
 609         /* The structure of the GdkWindow's is:
 610          *    * widget->window: the shown gdkwindow embedding all the stuff inside
 611          *    * view_window: a backing store gdkwindow containing the headers and contents
 612          *      being scrolled. This window should have all the visible and non visible
 613          *      widgets inside.
 614          *    * headers_window: gdk window for headers_box.
 615          *    * html_window: gdk window for html_scroll (the scrolled window containing the
 616          *      body view showing the contents of the mail).
 617          */
 618
 619         attributes.x = widget->allocation.x;
 620         attributes.y = widget->allocation.y;
 621         attributes.width = widget->allocation.width;
 622         attributes.height = widget->allocation.height;
 623         attributes.window_type = GDK_WINDOW_CHILD;
 624         attributes.wclass = GDK_INPUT_OUTPUT;
 625         attributes.visual = gtk_widget_get_visual (widget);
 626         attributes.colormap = gtk_widget_get_colormap (widget);
 627
 628         event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
 629         attributes.event_mask = event_mask | GDK_BUTTON_PRESS_MASK;
 630         attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 631
 632         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 633                                          &attributes, attributes_mask);
 634         gdk_window_set_user_data (widget->window, self);
 635
 636         get_view_allocation (self, &view_allocation);
 637
 638         attributes.x = view_allocation.x;
 639         attributes.y = view_allocation.y;
 640         attributes.width = view_allocation.width;
 641         attributes.height = view_allocation.height;
 642         attributes.event_mask = 0;
 643         priv->view_window = gdk_window_new (widget->window, &attributes, attributes_mask);
 644         gdk_window_set_user_data (priv->view_window, self);
 645         gdk_window_set_back_pixmap (priv->view_window, NULL, FALSE);
 646
 647         attributes.x = -hadj->value;
 648         attributes.y = -vadj->value;
 649         attributes.width = hadj->upper;
 650         if (priv->headers_box)
 651                 attributes.height = GTK_WIDGET (priv->headers_box)->allocation.height;
 652         else
 653                 attributes.height = 1;
 654         attributes.event_mask = event_mask;
 655
 656         priv->headers_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
 657         gdk_window_set_user_data (priv->headers_window, self);
 658
 659         if (priv->headers_box)
 660                 gtk_widget_set_parent_window (priv->headers_box, priv->headers_window);
 661
 662         attributes.x = -hadj->value;
 663         if (priv->headers_box)
 664                 attributes.y = GTK_WIDGET (priv->headers_box)->allocation.height - vadj->value;
 665         else
 666                 attributes.y = -vadj->value;
 667         attributes.width = hadj->upper;
 668         if (priv->headers_box)
 669                 attributes.height = vadj->upper - GTK_WIDGET (priv->headers_box)->allocation.height;
 670         else
 671                 attributes.height = vadj->upper;
 672         attributes.event_mask = event_mask;
 673
 674         priv->html_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
 675         gdk_window_set_user_data (priv->html_window, self);
 676
 677         if (priv->html_scroll)
 678                 gtk_widget_set_parent_window (priv->html_scroll, priv->html_window);
 679
 680         widget->style = gtk_style_attach (widget->style, widget->window);
 681         gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 682         gtk_style_set_background (widget->style, priv->headers_window, GTK_STATE_NORMAL);
 683         gtk_style_set_background (widget->style, priv->html_window, GTK_STATE_NORMAL);
 684
 685         gtk_paint_flat_box(widget->style, priv->headers_window, GTK_STATE_NORMAL,
 686                            GTK_SHADOW_NONE,
 687                            NULL, widget, "msgviewheaders",
 688                            0,0,-1,-1);
 689         gtk_paint_flat_box(widget->style, priv->html_window, GTK_STATE_NORMAL,
 690                            GTK_SHADOW_NONE,
 691                            NULL, widget, "msgviewcontents",
 692                            0,0,-1,-1);
 693
 694         gdk_window_show (priv->view_window);
 695         gdk_window_show (priv->headers_window);
 696         gdk_window_show (priv->html_window);
 697
 698 }
 699
 700 static void
 701 unrealize (GtkWidget *widget)
 702 {
 703         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (widget);
 704         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 705
 706         gdk_window_set_user_data (priv->view_window, NULL);
 707         gdk_window_destroy (priv->view_window);
 708         priv->view_window = NULL;
 709
 710         gdk_window_set_user_data (priv->headers_window, NULL);
 711         gdk_window_destroy (priv->headers_window);
 712         priv->headers_window = NULL;
 713
 714         gdk_window_set_user_data (priv->html_window, NULL);
 715         gdk_window_destroy (priv->html_window);
 716         priv->html_window = NULL;
 717
 718         if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 719                 ( * GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 720
 721 }
 722
 723 static gint
 724 expose (GtkWidget *widget,
 725         GdkEventExpose *event)
 726 {
 727         ModestGtkhtmlMsgView *self;
 728         ModestGtkhtmlMsgViewPrivate *priv;
 729
 730         if (GTK_WIDGET_DRAWABLE (widget)) {
 731                 self = MODEST_GTKHTML_MSG_VIEW (widget);
 732                 priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 733                 if (event->window == widget->window) {
 734                         gtk_paint_shadow (widget->style, widget->window,
 735                                           GTK_STATE_NORMAL, priv->shadow_type,
 736                                           &event->area, widget, "msgview",
 737                                           0,0,-1,-1);
 738                 } else if (event->window == priv->headers_window) {
 739                         gtk_paint_flat_box(widget->style, priv->headers_window, GTK_STATE_NORMAL,
 740                                            GTK_SHADOW_NONE,
 741                                            &event->area, widget, "msgviewheaders",
 742                                            0,0,-1,-1);
 743                 } else if (event->window == priv->html_window) {
 744                         gtk_paint_flat_box(widget->style, priv->html_window, GTK_STATE_NORMAL,
 745                                            GTK_SHADOW_NONE,
 746                                            &event->area, widget, "msgviewcontents",
 747                                            0,0,-1,-1);
 748                 }
 749                 if (priv->headers_box)
 750                         gtk_container_propagate_expose (GTK_CONTAINER (self), priv->headers_box, event);
 751                 if (priv->html_scroll)
 752                         gtk_container_propagate_expose (GTK_CONTAINER (self), priv->html_scroll, event);
 753                 (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 754         }
 755
 756         return FALSE;
 757 }
 758
 759 static void
 760 forall (GtkContainer *container,
 761         gboolean include_internals,
 762         GtkCallback callback,
 763         gpointer userdata)
 764 {
 765         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (container);
 766         g_return_if_fail (callback != NULL);
 767
 768         if (priv->headers_box)
 769                 (*callback) (priv->headers_box, userdata);
 770         if (priv->html_scroll)
 771                 (*callback) (priv->html_scroll, userdata);
 772 }
 773
 774 static void
 775 container_remove (GtkContainer *container,
 776                   GtkWidget *widget)
 777 {
 778         gboolean was_visible = FALSE;
 779         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (container);
 780         was_visible = GTK_WIDGET_VISIBLE (widget);
 781         if (widget == priv->headers_box) {
 782                 gtk_widget_unparent (priv->headers_box);
 783                 priv->headers_box = NULL;
 784         } else if (widget == priv->html_scroll) {
 785                 gtk_widget_unparent (priv->html_scroll);
 786                 priv->html_scroll = NULL;
 787         } else {
 788                 return;
 789         }
 790         if (was_visible)
 791                 gtk_widget_queue_resize (GTK_WIDGET(container));
 792
 793 }
 794
 795 static void
 796 size_request (GtkWidget *widget,
 797               GtkRequisition *req)
 798 {
 799         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (widget);
 800         GtkRequisition child_req;
 801
 802         req->width = 0;
 803         req->height = 0;
 804
 805         gtk_widget_size_request (priv->headers_box, &child_req);
 806         req->width = child_req.width;
 807         req->height += child_req.height;
 808         gtk_widget_size_request (priv->html_scroll, &child_req);
 809         req->width = MAX (child_req.width, req->width);
 810         req->height += child_req.height;
 811
 812 }
 813
 814 static void
 815 size_allocate (GtkWidget *widget,
 816                GtkAllocation *allocation)
 817 {
 818         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (widget);
 819         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 820         gboolean hadj_value_changed, vadj_value_changed;
 821         GtkAllocation headers_allocation, html_allocation, view_allocation;
 822         GtkAdjustment *html_vadj;
 823
 824         if (GTK_WIDGET_MAPPED (widget) &&
 825             priv->shadow_type != GTK_SHADOW_NONE &&
 826             (allocation->width != widget->allocation.width ||
 827              allocation->height != widget->allocation.height))
 828                 gdk_window_invalidate_rect (widget->window, NULL, FALSE);
 829
 830         widget->allocation = *allocation;
 831         set_hadjustment_values (self, &hadj_value_changed);
 832         set_vadjustment_values (self, &vadj_value_changed);
 833
 834         get_view_allocation (self, &view_allocation);
 835
 836         headers_allocation.x = 0;
 837         headers_allocation.y = 0;
 838         headers_allocation.width = view_allocation.width;
 839         if (priv->headers_box)
 840                 headers_allocation.height = GTK_WIDGET (priv->headers_box)->requisition.height;
 841         else
 842                 headers_allocation.height = 0;
 843
 844         html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
 845
 846         html_allocation.x = 0;
 847         html_allocation.y = headers_allocation.height;
 848         html_allocation.width = view_allocation.width;
 849         html_allocation.height = MAX ((gint) html_vadj->upper, (gint)(priv->vadj->upper - headers_allocation.height));
 850
 851         if (GTK_WIDGET_REALIZED (widget)) {
 852                 gdk_window_move_resize (widget->window,
 853                                         allocation->x,
 854                                         allocation->y,
 855                                         allocation->width,
 856                                         allocation->height);
 857
 858                 gdk_window_move_resize (priv->view_window,
 859                                         view_allocation.x,
 860                                         view_allocation.y,
 861                                         view_allocation.width,
 862                                         view_allocation.height);
 863                 gdk_window_move_resize (priv->headers_window,
 864                                         0,
 865                                         (gint) (- priv->vadj->value),
 866                                         allocation->width,
 867                                         headers_allocation.height);
 868                 gdk_window_move_resize (priv->html_window,
 869                                         (gint) (- priv->hadj->value),
 870                                         (gint) (html_allocation.y - priv->vadj->value),
 871                                         (gint) priv->hadj->upper,
 872                                         html_allocation.height);
 873         }
 874
 875         if (priv->headers_box && GTK_WIDGET_VISIBLE (priv->headers_box)) {
 876                 gtk_widget_size_allocate (priv->headers_box, &headers_allocation);
 877         }
 878         if (priv->html_scroll && GTK_WIDGET_VISIBLE (priv->html_scroll)) {
 879                 html_allocation.x = 0;
 880                 html_allocation.y = 0;
 881                 html_allocation.width = (gint) priv->hadj->upper;
 882                 html_allocation.height = (gint) priv->vadj->upper - headers_allocation.height;
 883                 gtk_widget_size_allocate (priv->html_scroll, &html_allocation);
 884         }
 885         gtk_adjustment_changed (priv->hadj);
 886         gtk_adjustment_changed (priv->vadj);
 887
 888         if (hadj_value_changed)
 889                 gtk_adjustment_value_changed (priv->hadj);
 890         if (vadj_value_changed)
 891                 gtk_adjustment_value_changed (priv->vadj);
 892
 893 }
 894
 895 static void
 896 adjustment_value_changed (GtkAdjustment *adj, gpointer data)
 897 {
 898         ModestGtkhtmlMsgView *self = NULL;
 899         ModestGtkhtmlMsgViewPrivate *priv = NULL;
 900
 901         g_return_if_fail (GTK_IS_ADJUSTMENT (adj));
 902         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (data));
 903
 904         self = MODEST_GTKHTML_MSG_VIEW (data);
 905         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 906
 907         if (GTK_WIDGET_REALIZED (self)) {
 908                 GtkAdjustment *hadj = get_hadjustment (self);
 909                 GtkAdjustment *vadj = get_vadjustment (self);
 910                 gint headers_offset = 0;
 911
 912                 gtk_widget_queue_resize (priv->html_scroll);
 913
 914                 if (priv->headers_box && GTK_WIDGET_VISIBLE (priv->headers_box)) {
 915                         gint old_x, old_y;
 916                         gint new_x, new_y;
 917                         gdk_window_get_position (priv->headers_window, &old_x, &old_y);
 918                         new_x = 0;
 919                         new_y = -vadj->value;
 920
 921                         headers_offset = GTK_WIDGET(priv->headers_box)->allocation.height;
 922
 923                         if (new_x != old_x || new_y != old_y) {
 924                                 gdk_window_move (priv->headers_window, new_x, new_y);
 925                                 gdk_window_process_updates (priv->headers_window, TRUE);
 926                         }
 927                 }
 928
 929                 if (priv->html_scroll && GTK_WIDGET_VISIBLE (priv->html_scroll)) {
 930                         gint old_x, old_y;
 931                         gint new_x, new_y;
 932                         gdk_window_get_position (priv->html_window, &old_x, &old_y);
 933                         new_x = -hadj->value;
 934                         new_y = headers_offset - vadj->value;
 935
 936                         if (new_x != old_x || new_y != old_y) {
 937                                 gdk_window_move (priv->html_window, new_x, new_y);
 938                                 gdk_window_process_updates (priv->html_window, TRUE);
 939                         }
 940                 }
 941
 942         }
 943 }
 944
 945 static void
 946 html_adjustment_changed (GtkAdjustment *adj,
 947                          gpointer userdata)
 948 {
 949         ModestGtkhtmlMsgView *self = MODEST_GTKHTML_MSG_VIEW (userdata);
 950         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 951         GtkAdjustment *html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW(priv->html_scroll));
 952         gboolean vadj_changed;
 953         gint new_height;
 954
 955         g_signal_stop_emission_by_name (G_OBJECT (adj), "changed");
 956
 957         priv->html_scroll->requisition.height = html_vadj->upper;
 958         if (html_vadj->upper == priv->html_scroll->allocation.height)
 959                 return;
 960         priv->html_scroll->allocation.height = html_vadj->upper;
 961
 962         set_vadjustment_values (self, &vadj_changed);
 963
 964         new_height = MAX ((gint) html_vadj->upper, (gint) (priv->vadj->upper - priv->headers_box->allocation.height));
 965
 966         gtk_adjustment_changed (priv->vadj);
 967         if (GTK_WIDGET_DRAWABLE (priv->html_scroll)) {
 968                 gdk_window_resize (priv->html_window, (gint) priv->hadj->upper, (gint) new_height);
 969                 gdk_window_process_updates (priv->view_window, TRUE);
 970                 gtk_container_resize_children (GTK_CONTAINER (self));
 971         }
 972
 973 }
 974
 975 gboolean
 976 idle_readjust_scroll (ModestGtkhtmlMsgView *self)
 977 {
 978
 979         /* We're out the main lock */
 980         gdk_threads_enter ();
 981
 982         if (GTK_WIDGET_DRAWABLE (self)) {
 983                 ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
 984                 GtkAdjustment *html_vadj;
 985                 html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
 986                 html_vadj->page_size = html_vadj->upper;
 987                 gtk_adjustment_changed (html_vadj);
 988                 gtk_widget_queue_resize (GTK_WIDGET (self));
 989                 gtk_widget_queue_draw (GTK_WIDGET (self));
 990
 991                 /* Just another hack for making readjust really work. This forces an update
 992                  * of the scroll, and then, make the scroll really update properly the
 993                  * the size and not corrupt scrollable area */
 994                 gtk_adjustment_set_value (priv->vadj, 1.0);
 995                 gtk_adjustment_set_value (priv->vadj, 0.0);
 996         }
 997         g_object_unref (G_OBJECT (self));
 998
 999         gdk_threads_leave ();
1000
1001         return FALSE;
1002 }
1003
1004 static void
1005 modest_gtkhtml_msg_view_init (ModestGtkhtmlMsgView *obj)
1006 {
1007         ModestGtkhtmlMsgViewPrivate *priv;
1008         GtkAdjustment *html_vadj;
1009         GtkWidget *separator;
1010
1011         GTK_WIDGET_UNSET_FLAGS (obj, GTK_NO_WINDOW);
1012         gtk_widget_set_redraw_on_allocate (GTK_WIDGET (obj), TRUE);
1013         gtk_container_set_reallocate_redraws (GTK_CONTAINER (obj), TRUE);
1014         gtk_container_set_resize_mode (GTK_CONTAINER (obj), GTK_RESIZE_QUEUE);
1015
1016         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(obj);
1017
1018         priv->current_zoom = 1.0;
1019
1020         priv->hadj = NULL;
1021         priv->vadj = NULL;
1022         priv->shadow_type = GTK_SHADOW_IN;
1023         priv->view_window = NULL;
1024         priv->headers_window = NULL;
1025         priv->html_window = NULL;
1026
1027         gtk_widget_push_composite_child ();
1028         priv->html_scroll = gtk_scrolled_window_new (NULL, NULL);
1029         gtk_widget_set_composite_name (priv->html_scroll, "contents");
1030         gtk_widget_pop_composite_child ();
1031         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->html_scroll), GTK_POLICY_NEVER, GTK_POLICY_NEVER);
1032
1033         priv->msg                     = NULL;
1034
1035         priv->body_view                 = GTK_WIDGET (g_object_new (MODEST_TYPE_GTKHTML_MIME_PART_VIEW, NULL));
1036         priv->mail_header_view        = GTK_WIDGET(modest_mail_header_view_new (TRUE));
1037         gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
1038
1039         priv->attachments_view        = GTK_WIDGET(modest_attachments_view_new (NULL));
1040
1041         g_signal_connect (G_OBJECT(priv->body_view), "activate_link",
1042                                        G_CALLBACK(on_activate_link), obj);
1043         g_signal_connect (G_OBJECT(priv->body_view), "fetch_url",
1044                                        G_CALLBACK(on_fetch_url), obj);
1045         g_signal_connect (G_OBJECT(priv->body_view), "link_hover",
1046                                        G_CALLBACK(on_link_hover), obj);
1047
1048         g_signal_connect (G_OBJECT (priv->mail_header_view), "recpt-activated",
1049                           G_CALLBACK (on_recpt_activated), obj);
1050
1051         g_signal_connect (G_OBJECT (priv->attachments_view), "activate",
1052                           G_CALLBACK (on_attachment_activated), obj);
1053
1054         html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW(priv->html_scroll));
1055
1056         g_signal_connect (G_OBJECT (html_vadj), "changed",
1057                           G_CALLBACK (html_adjustment_changed), obj);
1058
1059         gtk_widget_push_composite_child ();
1060         priv->headers_box = gtk_vbox_new (0, FALSE);
1061         gtk_widget_set_composite_name (priv->headers_box, "headers");
1062         gtk_widget_pop_composite_child ();
1063
1064         if (priv->mail_header_view)
1065                 gtk_box_pack_start (GTK_BOX(priv->headers_box), priv->mail_header_view, FALSE, FALSE, 0);
1066
1067         if (priv->attachments_view) {
1068                 gchar *att_label = g_strconcat (_("mcen_me_viewer_attachments"), ":", NULL);
1069
1070                 priv->attachments_box = (GtkWidget *)
1071                         modest_mail_header_view_add_custom_header (MODEST_MAIL_HEADER_VIEW (priv->mail_header_view),
1072                                                                    att_label,
1073                                                                    priv->attachments_view,
1074                                                                    FALSE, FALSE);
1075                 gtk_widget_hide_all (priv->attachments_box);
1076                 g_free (att_label);
1077         }
1078
1079         separator = gtk_hseparator_new ();
1080         gtk_box_pack_start (GTK_BOX(priv->headers_box), separator, FALSE, FALSE, 0);
1081
1082         gtk_widget_set_parent (priv->headers_box, GTK_WIDGET (obj));
1083
1084         if (priv->body_view) {
1085                 gtk_container_add (GTK_CONTAINER (priv->html_scroll), priv->body_view);
1086                 gtk_widget_set_parent (priv->html_scroll, GTK_WIDGET(obj));
1087 #ifdef MAEMO_CHANGES
1088                 gtk_widget_tap_and_hold_setup (GTK_WIDGET (priv->body_view), NULL, NULL, 0);
1089                 g_signal_connect (G_OBJECT (priv->body_view), "tap-and-hold", G_CALLBACK (on_tap_and_hold), obj);
1090 #endif
1091         }
1092
1093 }
1094
1095
1096 static void
1097 modest_gtkhtml_msg_view_finalize (GObject *obj)
1098 {
1099         ModestGtkhtmlMsgViewPrivate *priv;
1100         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (obj);
1101
1102         if (priv->msg) {
1103                 g_object_unref (G_OBJECT(priv->msg));
1104                 priv->msg = NULL;
1105         }
1106
1107         /* we cannot disconnect sigs, because priv->body_view is
1108          * already dead */
1109
1110         disconnect_vadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1111         disconnect_hadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1112
1113         priv->body_view = NULL;
1114         priv->attachments_view = NULL;
1115
1116         G_OBJECT_CLASS(parent_class)->finalize (obj);
1117 }
1118
1119 static void
1120 modest_gtkhtml_msg_view_destroy (GtkObject *obj)
1121 {
1122         disconnect_vadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1123         disconnect_hadjustment (MODEST_GTKHTML_MSG_VIEW(obj));
1124
1125         GTK_OBJECT_CLASS(parent_class)->destroy (obj);
1126 }
1127
1128 /* INTERNAL METHODS */
1129
1130 static GtkAdjustment *
1131 get_vadjustment (ModestGtkhtmlMsgView *self)
1132 {
1133         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1134
1135         if (!priv->vadj)
1136                 set_vadjustment (self, NULL);
1137
1138         return priv->vadj;
1139
1140 }
1141
1142 static GtkAdjustment *
1143 get_hadjustment (ModestGtkhtmlMsgView *self)
1144 {
1145         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1146
1147         if (!priv->hadj)
1148                 set_hadjustment (self, NULL);
1149
1150         return priv->hadj;
1151
1152 }
1153
1154 static void
1155 set_hadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *hadj)
1156 {
1157         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1158         gboolean value_changed;
1159
1160         if (hadj && hadj == priv->hadj)
1161                 return;
1162
1163         if (!hadj)
1164                 hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0,0.0,0.0,0.0,0.0,0.0));
1165         disconnect_hadjustment (self);
1166         g_object_ref (G_OBJECT (hadj));
1167         gtk_object_sink (GTK_OBJECT (hadj));
1168         priv->hadj = hadj;
1169         set_hadjustment_values (self, &value_changed);
1170
1171         g_signal_connect (hadj, "value_changed", G_CALLBACK (adjustment_value_changed),
1172                           self);
1173
1174         gtk_adjustment_changed (hadj);
1175         if (value_changed)
1176                 gtk_adjustment_value_changed (hadj);
1177         else
1178                 adjustment_value_changed (hadj, self);
1179
1180         g_object_notify (G_OBJECT (self), "hadjustment");
1181 }
1182
1183 static void
1184 set_vadjustment (ModestGtkhtmlMsgView *self, GtkAdjustment *vadj)
1185 {
1186         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1187         gboolean value_changed;
1188
1189         if (vadj && vadj == priv->vadj)
1190                 return;
1191
1192         if (!vadj)
1193                 vadj = (GtkAdjustment *) gtk_adjustment_new (0.0,0.0,0.0,0.0,0.0,0.0);
1194         disconnect_vadjustment (self);
1195         g_object_ref (G_OBJECT (vadj));
1196         gtk_object_sink (GTK_OBJECT (vadj));
1197         priv->vadj = vadj;
1198         set_vadjustment_values (self, &value_changed);
1199
1200         g_signal_connect (vadj, "value_changed", G_CALLBACK (adjustment_value_changed),
1201                           self);
1202
1203         gtk_adjustment_changed (vadj);
1204         if (value_changed)
1205                 gtk_adjustment_value_changed (vadj);
1206         else
1207                 adjustment_value_changed (vadj, self);
1208
1209         g_object_notify (G_OBJECT (self), "vadjustment");
1210 }
1211
1212 static void
1213 set_shadow_type (ModestGtkhtmlMsgView *self,
1214                  GtkShadowType shadow_type)
1215 {
1216         ModestGtkhtmlMsgViewPrivate *priv;
1217         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1218
1219         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1220
1221         if (priv->shadow_type != shadow_type) {
1222                 priv->shadow_type = shadow_type;
1223
1224                 if (GTK_WIDGET_VISIBLE (self)) {
1225                         gtk_widget_size_allocate (GTK_WIDGET (self), &(GTK_WIDGET (self)->allocation));
1226                         gtk_widget_queue_draw (GTK_WIDGET (self));
1227                 }
1228                 g_object_notify (G_OBJECT (self), "shadow-type");
1229         }
1230 }
1231
1232 static GtkShadowType
1233 get_shadow_type (ModestGtkhtmlMsgView *self)
1234 {
1235         ModestGtkhtmlMsgViewPrivate *priv;
1236         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), GTK_SHADOW_NONE);
1237         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1238
1239         return priv->shadow_type;
1240 }
1241
1242 GtkWidget*
1243 modest_msg_view_new (TnyMsg *msg)
1244 {
1245         GObject *obj;
1246         ModestGtkhtmlMsgView* self;
1247
1248         obj  = G_OBJECT(g_object_new(MODEST_TYPE_GTKHTML_MSG_VIEW, NULL));
1249         self = MODEST_GTKHTML_MSG_VIEW(obj);
1250         tny_msg_view_set_msg (TNY_MSG_VIEW (self), msg);
1251
1252         return GTK_WIDGET(self);
1253 }
1254
1255 #ifdef MAEMO_CHANGES
1256 static void
1257 on_tap_and_hold (GtkWidget *widget,
1258                  gpointer data)
1259 {
1260         ModestGtkhtmlMsgView *self = (ModestGtkhtmlMsgView *) data;
1261         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1262
1263         g_signal_emit_by_name (G_OBJECT (self), "link-contextual", priv->last_url);
1264 }
1265 #endif
1266
1267 static void
1268 on_recpt_activated (ModestMailHeaderView *header_view,
1269                     const gchar *address,
1270                     ModestGtkhtmlMsgView *self)
1271 {
1272         g_signal_emit_by_name (G_OBJECT (self), "recpt-activated", address);
1273 }
1274
1275 static void
1276 on_attachment_activated (ModestAttachmentsView * att_view, TnyMimePart *mime_part, gpointer self)
1277 {
1278
1279         g_signal_emit_by_name (G_OBJECT(self), "attachment_clicked", mime_part);
1280 }
1281
1282 static gboolean
1283 on_activate_link (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *self)
1284 {
1285         gboolean result;
1286         g_return_val_if_fail (self, FALSE);
1287
1288         g_signal_emit_by_name (G_OBJECT(self), "activate-link", uri, &result);
1289
1290         return result;
1291 }
1292
1293
1294 static gboolean
1295 on_link_hover (GtkWidget *widget, const gchar *uri, ModestGtkhtmlMsgView *self)
1296 {
1297         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1298         gboolean result;
1299
1300         g_free (priv->last_url);
1301         priv->last_url = g_strdup (uri);
1302
1303         g_signal_emit_by_name (G_OBJECT(self), "link-hover", uri, &result);
1304
1305         return result;
1306 }
1307
1308
1309
1310 static TnyMimePart *
1311 find_cid_image (TnyMsg *msg, const gchar *cid)
1312 {
1313         TnyMimePart *part = NULL;
1314         TnyList *parts;
1315         TnyIterator *iter;
1316
1317         g_return_val_if_fail (msg, NULL);
1318         g_return_val_if_fail (cid, NULL);
1319
1320         parts  = TNY_LIST (tny_simple_list_new());
1321
1322         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
1323         iter   = tny_list_create_iterator (parts);
1324
1325         while (!tny_iterator_is_done(iter)) {
1326                 const gchar *part_cid;
1327
1328                 part = TNY_MIME_PART(tny_iterator_get_current(iter));
1329                 part_cid = tny_mime_part_get_content_id (part);
1330
1331                 /* if there is no content id, try the content location;
1332                  * this is what Outlook seems to use when it converts
1333                  * it's internal richtext to html
1334                  */
1335                 if (!part_cid)
1336                         part_cid = tny_mime_part_get_content_location (part);
1337
1338                 if (part_cid && strcmp (cid, part_cid) == 0)
1339                         break;
1340
1341                 if (tny_mime_part_content_type_is (part, "multipart/related")) {
1342                         TnyList *related_parts = TNY_LIST (tny_simple_list_new ());
1343                         TnyIterator *related_iter = NULL;
1344                         TnyMimePart *related_part = NULL;
1345
1346                         tny_mime_part_get_parts (part, related_parts);
1347                         related_iter = tny_list_create_iterator (related_parts);
1348
1349                         while (!tny_iterator_is_done (related_iter)) {
1350                                 related_part = TNY_MIME_PART (tny_iterator_get_current (related_iter));
1351                                 part_cid = tny_mime_part_get_content_id (related_part);
1352                                 if (part_cid && strcmp (cid, part_cid) == 0) {
1353                                         break;
1354                                 }
1355                                 g_object_unref (related_part);
1356                                 related_part = NULL;
1357                                 tny_iterator_next (related_iter);
1358                         }
1359
1360                         g_object_unref (related_iter);
1361                         g_object_unref (related_parts);
1362                         if (related_part != NULL) {
1363                                 g_object_unref (part);
1364                                 part = related_part;
1365                                 break;
1366                         }
1367                 }
1368
1369                 g_object_unref (G_OBJECT(part));
1370
1371                 part = NULL;
1372                 tny_iterator_next (iter);
1373         }
1374
1375         g_object_unref (G_OBJECT(iter));
1376         g_object_unref (G_OBJECT(parts));
1377
1378         return part;
1379 }
1380
1381
1382 static gboolean
1383 on_fetch_url (GtkWidget *widget, const gchar *uri,
1384               TnyStream *stream, ModestGtkhtmlMsgView *self)
1385 {
1386         ModestGtkhtmlMsgViewPrivate *priv;
1387         const gchar* my_uri;
1388         TnyMimePart *part = NULL;
1389
1390         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1391
1392         /*
1393          * we search for either something starting with cid:, or something
1394          * with no prefix at all; this latter case occurs when sending mails
1395          * with MS Outlook in rich-text mode, and 'attach-as-object
1396          */
1397         if (g_str_has_prefix (uri, "cid:"))
1398                 my_uri = uri + 4;  /* +4 ==> skip "cid:" */
1399         else
1400                 my_uri = uri;
1401
1402         /* now try to find the embedded image */
1403         part = find_cid_image (priv->msg, my_uri);
1404         if (!part) {
1405                 g_printerr ("modest: %s: '%s' not found\n", __FUNCTION__, my_uri);
1406                 return FALSE;
1407         }
1408
1409         tny_mime_part_decode_to_stream ((TnyMimePart*)part, stream);
1410         g_object_unref (G_OBJECT(part));
1411         return TRUE;
1412 }
1413
1414 static void
1415 set_message (ModestGtkhtmlMsgView *self, TnyMsg *msg)
1416 {
1417         TnyMimePart *body;
1418         ModestGtkhtmlMsgViewPrivate *priv;
1419         TnyHeader *header;
1420         GtkAdjustment *html_vadj;
1421
1422         g_return_if_fail (self);
1423
1424         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(self);
1425         gtk_widget_set_no_show_all (priv->mail_header_view, FALSE);
1426
1427         html_vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->html_scroll));
1428         html_vadj->upper = 0;
1429         html_vadj->page_size = 0;
1430         g_signal_emit_by_name (G_OBJECT (html_vadj), "changed");
1431
1432
1433         if (msg != priv->msg) {
1434                 if (priv->msg)
1435                         g_object_unref (G_OBJECT(priv->msg));
1436                 if (msg)
1437                         g_object_ref   (G_OBJECT(msg));
1438                 priv->msg = msg;
1439         }
1440
1441         if (!msg) {
1442                 tny_header_view_clear (TNY_HEADER_VIEW (priv->mail_header_view));
1443                 modest_attachments_view_set_message (MODEST_ATTACHMENTS_VIEW (priv->attachments_view), NULL);
1444                 gtk_widget_hide_all (priv->mail_header_view);
1445                 gtk_widget_hide_all (priv->attachments_box);
1446                 gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
1447                 tny_mime_part_view_clear (TNY_MIME_PART_VIEW (priv->body_view));
1448                 gtk_widget_queue_resize (GTK_WIDGET(self));
1449                 gtk_widget_queue_draw (GTK_WIDGET(self));
1450                 return;
1451         }
1452
1453         header = tny_msg_get_header (msg);
1454         tny_header_view_set_header (TNY_HEADER_VIEW (priv->mail_header_view), header);
1455         g_object_unref (header);
1456
1457         modest_attachments_view_set_message (MODEST_ATTACHMENTS_VIEW(priv->attachments_view),
1458                                              msg);
1459
1460         body = modest_tny_msg_find_body_part (msg, TRUE);
1461         if (body) {
1462                 tny_mime_part_view_set_part (TNY_MIME_PART_VIEW (priv->body_view), body);
1463
1464                 if(modest_attachments_view_has_attachments (MODEST_ATTACHMENTS_VIEW (priv->attachments_view))) {
1465                         gtk_widget_show_all (priv->attachments_box);
1466                 } else {
1467                         gtk_widget_hide_all (priv->attachments_box);
1468                 }
1469
1470         } else
1471                 tny_mime_part_view_clear (TNY_MIME_PART_VIEW (priv->body_view));
1472
1473         gtk_widget_show (priv->body_view);
1474         gtk_widget_set_no_show_all (priv->attachments_box, TRUE);
1475         gtk_widget_show_all (priv->mail_header_view);
1476         gtk_widget_set_no_show_all (priv->attachments_box, FALSE);
1477         gtk_widget_set_no_show_all (priv->mail_header_view, TRUE);
1478         gtk_widget_queue_resize (GTK_WIDGET(self));
1479         gtk_widget_queue_draw (GTK_WIDGET(self));
1480
1481         if (priv->hadj != NULL)
1482                 priv->hadj->value = 0.0;
1483         if (priv->vadj != NULL)
1484                 priv->vadj->value = 0.0;
1485
1486         g_signal_emit_by_name (G_OBJECT (html_vadj), "changed");
1487
1488         /* This is a hack to force reallocation of scroll after drawing all the stuff. This
1489          * makes the html view get the proper and expected size and prevent being able to scroll
1490          * the buffer when it shouldn't be scrollable */
1491         g_object_ref (self);
1492         g_timeout_add (250, (GSourceFunc) idle_readjust_scroll, self);
1493 }
1494
1495
1496 static TnyMsg*
1497 get_message (ModestGtkhtmlMsgView *self)
1498 {
1499         TnyMsg *msg;
1500
1501         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), NULL);
1502
1503         msg = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE(self)->msg;
1504
1505         if (msg)
1506                 g_object_ref (msg);
1507
1508         return msg;
1509 }
1510
1511 static gboolean
1512 is_empty (ModestGtkhtmlMsgView *self)
1513 {
1514         ModestGtkhtmlMsgViewPrivate *priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1515
1516         return modest_mime_part_view_is_empty (MODEST_MIME_PART_VIEW (priv->body_view));
1517 }
1518
1519 static void
1520 set_zoom (ModestGtkhtmlMsgView *self, gdouble zoom)
1521 {
1522         ModestGtkhtmlMsgViewPrivate *priv;
1523
1524         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1525         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1526
1527         modest_zoomable_set_zoom (MODEST_ZOOMABLE(priv->body_view), zoom);
1528
1529         gtk_widget_queue_resize (priv->body_view);
1530 }
1531
1532 static gdouble
1533 get_zoom (ModestGtkhtmlMsgView *self)
1534 {
1535         ModestGtkhtmlMsgViewPrivate *priv;
1536
1537         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), 1.0);
1538         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1539
1540         return modest_zoomable_get_zoom (MODEST_ZOOMABLE (priv->body_view));
1541 }
1542
1543 static TnyHeaderFlags
1544 get_priority (ModestGtkhtmlMsgView *self)
1545 {
1546         ModestGtkhtmlMsgViewPrivate *priv;
1547
1548         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), 0);
1549
1550         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1551
1552         return modest_mail_header_view_get_priority (MODEST_MAIL_HEADER_VIEW (priv->mail_header_view));
1553 }
1554
1555 static void
1556 set_priority (ModestGtkhtmlMsgView *self, TnyHeaderFlags flags)
1557 {
1558         ModestGtkhtmlMsgViewPrivate *priv;
1559
1560         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1561         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1562
1563         modest_mail_header_view_set_priority (MODEST_MAIL_HEADER_VIEW (priv->mail_header_view), flags);
1564 }
1565
1566 /* INCREMENTAL SEARCH IMPLEMENTATION */
1567
1568 static gboolean
1569 search (ModestGtkhtmlMsgView *self, const gchar *search)
1570 {
1571         ModestGtkhtmlMsgViewPrivate *priv;
1572         gboolean result;
1573         GtkAdjustment *vadj, *tmp_vadj;
1574         gdouble y_offset;
1575
1576         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), FALSE);
1577
1578         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1579         vadj = gtk_layout_get_vadjustment (GTK_LAYOUT (priv->body_view));
1580         g_object_ref (vadj);
1581         tmp_vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, vadj->lower, vadj->upper, vadj->step_increment, 32.0, 32.0));
1582         gtk_layout_set_vadjustment (GTK_LAYOUT (priv->body_view), tmp_vadj);
1583         result = modest_isearch_view_search (MODEST_ISEARCH_VIEW (priv->body_view),
1584                                              search);
1585
1586         if (result) {
1587                 gint x, y, w, h;
1588                 gdouble offset_top, offset_bottom;
1589                 GtkAdjustment *adj;
1590                 if (modest_isearch_view_get_selection_area (MODEST_ISEARCH_VIEW (priv->body_view), &x, &y, &w, &h)) {
1591                         offset_top = (gdouble) (priv->headers_box->requisition.height + y);
1592                         offset_bottom = (gdouble) (priv->headers_box->requisition.height + y + h);
1593                         adj = GTK_ADJUSTMENT (priv->vadj);
1594                         if (offset_top < adj->value)
1595                                 gtk_adjustment_set_value (adj, offset_top + adj->page_increment - adj->page_size);
1596                         else if (offset_bottom > adj->value + adj->page_increment)
1597                                 gtk_adjustment_set_value (adj, offset_bottom - adj->page_increment);
1598                 }
1599         }
1600
1601         y_offset = tmp_vadj->value;
1602         gtk_layout_set_vadjustment (GTK_LAYOUT (priv->body_view), vadj);
1603         g_object_unref (vadj);
1604
1605         return result;
1606 }
1607
1608 static gboolean
1609 search_next (ModestGtkhtmlMsgView *self)
1610 {
1611         ModestGtkhtmlMsgViewPrivate *priv;
1612         gboolean result;
1613
1614         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), FALSE);
1615
1616         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1617         result = modest_isearch_view_search_next (MODEST_ISEARCH_VIEW (priv->body_view));
1618
1619         if (result) {
1620                 gint x, y, w, h;
1621                 gdouble offset_top, offset_bottom;
1622                 GtkAdjustment *adj;
1623
1624                 if (modest_isearch_view_get_selection_area (MODEST_ISEARCH_VIEW (priv->body_view), &x, &y, &w, &h)) {
1625                         offset_top = (gdouble) (priv->headers_box->requisition.height + y);
1626                         offset_bottom = (gdouble) (priv->headers_box->requisition.height + y + h);
1627                         adj = GTK_ADJUSTMENT (priv->vadj);
1628                         if (offset_top < adj->value)
1629                                 gtk_adjustment_set_value (adj, offset_top + adj->page_increment - adj->page_size);
1630                         else if (offset_bottom > adj->value + adj->page_increment)
1631                                 gtk_adjustment_set_value (adj, offset_bottom - adj->page_increment);
1632                 }
1633         }
1634         return result;
1635 }
1636
1637 static GList *
1638 get_selected_attachments (ModestGtkhtmlMsgView *self)
1639 {
1640         ModestGtkhtmlMsgViewPrivate *priv;
1641
1642         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), NULL);
1643         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1644
1645         return modest_attachments_view_get_selection (MODEST_ATTACHMENTS_VIEW (priv->attachments_view));
1646
1647 }
1648
1649 static GList *
1650 get_attachments (ModestGtkhtmlMsgView *self)
1651 {
1652         ModestGtkhtmlMsgViewPrivate *priv;
1653
1654         g_return_val_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self), NULL);
1655         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1656
1657         return modest_attachments_view_get_attachments (MODEST_ATTACHMENTS_VIEW (priv->attachments_view));
1658
1659 }
1660
1661 static void
1662 grab_focus (ModestGtkhtmlMsgView *self)
1663 {
1664         ModestGtkhtmlMsgViewPrivate *priv = NULL;
1665
1666         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1667         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1668
1669         gtk_widget_grab_focus (priv->body_view);
1670 }
1671
1672 static void
1673 remove_attachment (ModestGtkhtmlMsgView *self, TnyMimePart *attachment)
1674 {
1675         ModestGtkhtmlMsgViewPrivate *priv;
1676
1677         g_return_if_fail (MODEST_IS_GTKHTML_MSG_VIEW (self));
1678         g_return_if_fail (TNY_IS_MIME_PART (attachment));
1679         priv = MODEST_GTKHTML_MSG_VIEW_GET_PRIVATE (self);
1680
1681         modest_attachments_view_remove_attachment (MODEST_ATTACHMENTS_VIEW (priv->attachments_view),
1682                                                    attachment);
1683
1684 }
1685
1686 /* TNY MSG IMPLEMENTATION */
1687
1688 static void
1689 tny_msg_view_init (gpointer g, gpointer iface_data)
1690 {
1691         TnyMsgViewIface *klass = (TnyMsgViewIface *)g;
1692
1693         klass->get_msg_func = modest_msg_view_get_msg;
1694         klass->set_msg_func = modest_msg_view_set_msg;
1695         klass->set_unavailable_func = modest_msg_view_set_unavailable;
1696         klass->clear_func = modest_msg_view_clear;
1697         klass->create_mime_part_view_for_func = modest_msg_view_create_mime_part_view_for;
1698         klass->create_new_inline_viewer_func = modest_msg_view_create_new_inline_viewer;
1699
1700         return;
1701 }
1702
1703 static TnyMsg *
1704 modest_msg_view_get_msg (TnyMsgView *self)
1705 {
1706         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_msg_func (self);
1707 }
1708
1709 static TnyMsg *
1710 modest_msg_view_get_msg_default (TnyMsgView *self)
1711 {
1712         return TNY_MSG (tny_mime_part_view_get_part (TNY_MIME_PART_VIEW (self)));
1713 }
1714
1715 static void
1716 modest_msg_view_set_msg (TnyMsgView *self, TnyMsg *msg)
1717 {
1718         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_msg_func (self, msg);
1719 }
1720
1721 static void
1722 modest_msg_view_set_msg_default (TnyMsgView *self, TnyMsg *msg)
1723 {
1724
1725         tny_mime_part_view_set_part (TNY_MIME_PART_VIEW (self), TNY_MIME_PART (msg));
1726
1727         return;
1728 }
1729
1730 static void
1731 modest_msg_view_set_unavailable (TnyMsgView *self)
1732 {
1733         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_unavailable_func (self);
1734 }
1735
1736 static void
1737 modest_msg_view_set_unavailable_default (TnyMsgView *self)
1738 {
1739         tny_msg_view_clear (self);
1740
1741         return;
1742 }
1743
1744 static void
1745 modest_msg_view_clear (TnyMsgView *self)
1746 {
1747         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->clear_func (self);
1748 }
1749
1750 static void
1751 modest_msg_view_clear_default (TnyMsgView *self)
1752 {
1753         set_message (MODEST_GTKHTML_MSG_VIEW (self), NULL);
1754 }
1755
1756 static TnyMimePartView*
1757 modest_msg_view_create_mime_part_view_for (TnyMsgView *self, TnyMimePart *part)
1758 {
1759         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->create_mime_part_view_for_func (self, part);
1760 }
1761
1762 static TnyMimePartView*
1763 modest_msg_view_create_mime_part_view_for_default (TnyMsgView *self, TnyMimePart *part)
1764 {
1765         g_warning ("modest_msg_view_create_mime_part_view_for_default is not implemented");
1766         return NULL;
1767 }
1768
1769 static TnyMsgView*
1770 modest_msg_view_create_new_inline_viewer (TnyMsgView *self)
1771 {
1772         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->create_new_inline_viewer_func (self);
1773 }
1774
1775 static TnyMsgView*
1776 modest_msg_view_create_new_inline_viewer_default (TnyMsgView *self)
1777 {
1778         g_warning ("modest_msg_view_create_new_inline_viewer_default is not implemented");
1779
1780         return NULL;
1781 }
1782
1783 /* TNY MIME PART IMPLEMENTATION */
1784
1785 static void
1786 tny_mime_part_view_init (gpointer g, gpointer iface_data)
1787 {
1788         TnyMimePartViewIface *klass = (TnyMimePartViewIface *)g;
1789
1790         klass->get_part_func = modest_msg_view_mp_get_part;
1791         klass->set_part_func = modest_msg_view_mp_set_part;
1792         klass->clear_func = modest_msg_view_mp_clear;
1793
1794         return;
1795 }
1796
1797 static TnyMimePart*
1798 modest_msg_view_mp_get_part (TnyMimePartView *self)
1799 {
1800         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_part_func (self);
1801 }
1802
1803
1804 static TnyMimePart*
1805 modest_msg_view_mp_get_part_default (TnyMimePartView *self)
1806 {
1807         return TNY_MIME_PART (get_message (MODEST_GTKHTML_MSG_VIEW (self)));
1808 }
1809
1810 static void
1811 modest_msg_view_mp_set_part (TnyMimePartView *self,
1812                              TnyMimePart *part)
1813 {
1814         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_part_func (self, part);
1815 }
1816
1817 static void
1818 modest_msg_view_mp_set_part_default (TnyMimePartView *self,
1819                                      TnyMimePart *part)
1820 {
1821         g_return_if_fail ((part == NULL) || TNY_IS_MSG (part));
1822
1823         set_message (MODEST_GTKHTML_MSG_VIEW (self), TNY_MSG (part));
1824 }
1825
1826 static void
1827 modest_msg_view_mp_clear (TnyMimePartView *self)
1828 {
1829         tny_msg_view_clear (TNY_MSG_VIEW (self));
1830 }
1831
1832 /* MODEST MIME PART VIEW IMPLEMENTATION */
1833
1834 static void
1835 modest_mime_part_view_init (gpointer g, gpointer iface_data)
1836 {
1837         ModestMimePartViewIface *klass = (ModestMimePartViewIface *)g;
1838
1839         klass->is_empty_func = modest_msg_view_mp_is_empty;
1840
1841         return;
1842 }
1843
1844 static gboolean
1845 modest_msg_view_mp_is_empty (ModestMimePartView *self)
1846 {
1847         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->is_empty_func (self);
1848 }
1849
1850 static gboolean
1851 modest_msg_view_mp_is_empty_default (ModestMimePartView *self)
1852 {
1853         return is_empty (MODEST_GTKHTML_MSG_VIEW (self));
1854 }
1855
1856 /* MODEST ZOOMABLE IMPLEMENTATION */
1857 static void
1858 modest_zoomable_init (gpointer g, gpointer iface_data)
1859 {
1860         ModestZoomableIface *klass = (ModestZoomableIface *)g;
1861
1862         klass->get_zoom_func = modest_msg_view_get_zoom;
1863         klass->set_zoom_func = modest_msg_view_set_zoom;
1864         klass->zoom_minus_func = modest_msg_view_zoom_minus;
1865         klass->zoom_plus_func = modest_msg_view_zoom_plus;
1866
1867         return;
1868 }
1869
1870 static gdouble
1871 modest_msg_view_get_zoom (ModestZoomable *self)
1872 {
1873         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_zoom_func (self);
1874 }
1875
1876 static gdouble
1877 modest_msg_view_get_zoom_default (ModestZoomable *self)
1878 {
1879         return get_zoom (MODEST_GTKHTML_MSG_VIEW (self));
1880 }
1881
1882 static void
1883 modest_msg_view_set_zoom (ModestZoomable *self, gdouble value)
1884 {
1885         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_zoom_func (self, value);
1886 }
1887
1888 static void
1889 modest_msg_view_set_zoom_default (ModestZoomable *self, gdouble value)
1890 {
1891         set_zoom (MODEST_GTKHTML_MSG_VIEW (self), value);
1892 }
1893
1894 static gboolean
1895 modest_msg_view_zoom_minus (ModestZoomable *self)
1896 {
1897         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->zoom_minus_func (self);
1898 }
1899
1900 static gboolean
1901 modest_msg_view_zoom_minus_default (ModestZoomable *self)
1902 {
1903         /* operation not supported in ModestMsgView */
1904         return FALSE;
1905 }
1906
1907 static gboolean
1908 modest_msg_view_zoom_plus (ModestZoomable *self)
1909 {
1910         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->zoom_plus_func (self);
1911 }
1912
1913 static gboolean
1914 modest_msg_view_zoom_plus_default (ModestZoomable *self)
1915 {
1916         /* operation not supported in ModestMsgView */
1917         return FALSE;
1918 }
1919
1920 /* MODEST ISEARCH VIEW IMPLEMENTATION */
1921 static void
1922 modest_isearch_view_init (gpointer g, gpointer iface_data)
1923 {
1924         ModestISearchViewIface *klass = (ModestISearchViewIface *)g;
1925
1926         klass->search_func = modest_msg_view_search;
1927         klass->search_next_func = modest_msg_view_search_next;
1928
1929         return;
1930 }
1931
1932 static gboolean
1933 modest_msg_view_search (ModestISearchView *self, const gchar *string)
1934 {
1935         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->search_func (self, string);
1936 }
1937
1938 static gboolean
1939 modest_msg_view_search_default (ModestISearchView *self, const gchar *string)
1940 {
1941         return search (MODEST_GTKHTML_MSG_VIEW (self), string);
1942 }
1943
1944 static gboolean
1945 modest_msg_view_search_next (ModestISearchView *self)
1946 {
1947         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->search_next_func (self);
1948 }
1949
1950 static gboolean
1951 modest_msg_view_search_next_default (ModestISearchView *self)
1952 {
1953         return search_next (MODEST_GTKHTML_MSG_VIEW (self));
1954 }
1955
1956 /* MODEST MSG VIEW IMPLEMENTATION */
1957 static void
1958 modest_msg_view_init (gpointer g, gpointer iface_data)
1959 {
1960         ModestMsgViewIface *klass = (ModestMsgViewIface *)g;
1961
1962         klass->get_vadjustment_func = modest_gtkhtml_msg_view_get_vadjustment;
1963         klass->get_hadjustment_func = modest_gtkhtml_msg_view_get_hadjustment;
1964         klass->set_vadjustment_func = modest_gtkhtml_msg_view_set_vadjustment;
1965         klass->set_hadjustment_func = modest_gtkhtml_msg_view_set_hadjustment;
1966         klass->set_shadow_type_func = modest_gtkhtml_msg_view_set_shadow_type;
1967         klass->get_shadow_type_func = modest_gtkhtml_msg_view_get_shadow_type;
1968         klass->get_priority_func = modest_gtkhtml_msg_view_get_priority;
1969         klass->set_priority_func = modest_gtkhtml_msg_view_set_priority;
1970         klass->get_selected_attachments_func = modest_gtkhtml_msg_view_get_selected_attachments;
1971         klass->get_attachments_func = modest_gtkhtml_msg_view_get_attachments;
1972         klass->grab_focus_func = modest_gtkhtml_msg_view_grab_focus;
1973         klass->remove_attachment_func = modest_gtkhtml_msg_view_remove_attachment;
1974
1975         return;
1976 }
1977
1978 static GtkAdjustment*
1979 modest_gtkhtml_msg_view_get_vadjustment (ModestMsgView *self)
1980 {
1981         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_vadjustment_func (self);
1982 }
1983
1984 static GtkAdjustment*
1985 modest_gtkhtml_msg_view_get_vadjustment_default (ModestMsgView *self)
1986 {
1987         return get_vadjustment (MODEST_GTKHTML_MSG_VIEW (self));
1988 }
1989
1990 static GtkAdjustment*
1991 modest_gtkhtml_msg_view_get_hadjustment (ModestMsgView *self)
1992 {
1993         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_hadjustment_func (self);
1994 }
1995
1996 static GtkAdjustment*
1997 modest_gtkhtml_msg_view_get_hadjustment_default (ModestMsgView *self)
1998 {
1999         return get_hadjustment (MODEST_GTKHTML_MSG_VIEW (self));
2000 }
2001
2002 static void
2003 modest_gtkhtml_msg_view_set_vadjustment (ModestMsgView *self, GtkAdjustment *adj)
2004 {
2005         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_vadjustment_func (self, adj);
2006 }
2007
2008 static void
2009 modest_gtkhtml_msg_view_set_vadjustment_default (ModestMsgView *self, GtkAdjustment *adj)
2010 {
2011         set_vadjustment (MODEST_GTKHTML_MSG_VIEW (self), adj);
2012 }
2013
2014 static void
2015 modest_gtkhtml_msg_view_set_hadjustment (ModestMsgView *self, GtkAdjustment *adj)
2016 {
2017         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_hadjustment_func (self, adj);
2018 }
2019
2020 static void
2021 modest_gtkhtml_msg_view_set_hadjustment_default (ModestMsgView *self, GtkAdjustment *adj)
2022 {
2023         set_hadjustment (MODEST_GTKHTML_MSG_VIEW (self), adj);
2024 }
2025
2026 static void
2027 modest_gtkhtml_msg_view_set_shadow_type (ModestMsgView *self, GtkShadowType type)
2028 {
2029         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_shadow_type_func (self, type);
2030 }
2031
2032 static void
2033 modest_gtkhtml_msg_view_set_shadow_type_default (ModestMsgView *self, GtkShadowType type)
2034 {
2035         set_shadow_type (MODEST_GTKHTML_MSG_VIEW (self), type);
2036 }
2037
2038 static GtkShadowType
2039 modest_gtkhtml_msg_view_get_shadow_type (ModestMsgView *self)
2040 {
2041         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_shadow_type_func (self);
2042 }
2043
2044 static GtkShadowType
2045 modest_gtkhtml_msg_view_get_shadow_type_default (ModestMsgView *self)
2046 {
2047         return get_shadow_type (MODEST_GTKHTML_MSG_VIEW (self));
2048 }
2049
2050 static void
2051 modest_gtkhtml_msg_view_set_priority (ModestMsgView *self, TnyHeaderFlags flags)
2052 {
2053         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->set_priority_func (self, flags);
2054 }
2055
2056 static void
2057 modest_gtkhtml_msg_view_set_priority_default (ModestMsgView *self, TnyHeaderFlags flags)
2058 {
2059         set_priority (MODEST_GTKHTML_MSG_VIEW (self), flags);
2060 }
2061
2062 static TnyHeaderFlags
2063 modest_gtkhtml_msg_view_get_priority (ModestMsgView *self)
2064 {
2065         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_priority_func (self);
2066 }
2067
2068 static TnyHeaderFlags
2069 modest_gtkhtml_msg_view_get_priority_default (ModestMsgView *self)
2070 {
2071         return get_priority (MODEST_GTKHTML_MSG_VIEW (self));
2072 }
2073
2074 static GList*
2075 modest_gtkhtml_msg_view_get_selected_attachments (ModestMsgView *self)
2076 {
2077         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_selected_attachments_func (self);
2078 }
2079
2080 static GList*
2081 modest_gtkhtml_msg_view_get_selected_attachments_default (ModestMsgView *self)
2082 {
2083         return get_selected_attachments (MODEST_GTKHTML_MSG_VIEW (self));
2084 }
2085
2086 static GList*
2087 modest_gtkhtml_msg_view_get_attachments (ModestMsgView *self)
2088 {
2089         return MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->get_attachments_func (self);
2090 }
2091
2092 static GList*
2093 modest_gtkhtml_msg_view_get_attachments_default (ModestMsgView *self)
2094 {
2095         return get_attachments (MODEST_GTKHTML_MSG_VIEW (self));
2096 }
2097
2098 static void
2099 modest_gtkhtml_msg_view_grab_focus (ModestMsgView *self)
2100 {
2101         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->grab_focus_func (self);
2102 }
2103
2104 static void
2105 modest_gtkhtml_msg_view_grab_focus_default (ModestMsgView *self)
2106 {
2107         grab_focus (MODEST_GTKHTML_MSG_VIEW (self));
2108 }
2109
2110 static void
2111 modest_gtkhtml_msg_view_remove_attachment (ModestMsgView *self, TnyMimePart *attachment)
2112 {
2113         MODEST_GTKHTML_MSG_VIEW_GET_CLASS (self)->remove_attachment_func (self, attachment);
2114 }
2115
2116 static void
2117 modest_gtkhtml_msg_view_remove_attachment_default (ModestMsgView *self, TnyMimePart *attachment)
2118 {
2119         remove_attachment (MODEST_GTKHTML_MSG_VIEW (self), attachment);
2120 }
2121