git.maemo.org Git - modest/blob - src/widgets/modest-header-view.c

   1 /* Copyright (c) 2006, 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 <glib/gi18n.h>
  31 #include <tny-list.h>
  32 #include <tny-simple-list.h>
  33 #include <tny-folder-monitor.h>
  34 #include <string.h>
  35
  36 #include <modest-header-view.h>
  37 #include <modest-header-view-priv.h>
  38 #include <modest-dnd.h>
  39
  40 #include <modest-marshal.h>
  41 #include <modest-text-utils.h>
  42 #include <modest-icon-names.h>
  43 #include <modest-runtime.h>
  44
  45 static void modest_header_view_class_init  (ModestHeaderViewClass *klass);
  46 static void modest_header_view_init        (ModestHeaderView *obj);
  47 static void modest_header_view_finalize    (GObject *obj);
  48
  49 static gboolean      on_header_clicked      (GtkWidget *widget,
  50                                             GdkEventButton *event,
  51                                             gpointer user_data);
  52
  53 static gint          cmp_rows               (GtkTreeModel *tree_model,
  54                                              GtkTreeIter *iter1,
  55                                              GtkTreeIter *iter2,
  56                                              gpointer user_data);
  57
  58 static void          on_selection_changed   (GtkTreeSelection *sel,
  59                                              gpointer user_data);
  60
  61 static void          setup_drag_and_drop    (GtkTreeView *self);
  62
  63 static GtkTreePath * get_selected_row       (GtkTreeView *self, GtkTreeModel **model);
  64
  65 static gboolean      on_focus_in            (GtkWidget     *sef,
  66                                              GdkEventFocus *event,
  67                                              gpointer       user_data);
  68
  69 typedef struct _ModestHeaderViewPrivate ModestHeaderViewPrivate;
  70 struct _ModestHeaderViewPrivate {
  71         TnyFolder            *folder;
  72         ModestHeaderViewStyle style;
  73
  74         TnyFolderMonitor     *monitor;
  75         GMutex               *monitor_lock;
  76 };
  77
  78 #define MODEST_HEADER_VIEW_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  79                                                 MODEST_TYPE_HEADER_VIEW, \
  80                                                 ModestHeaderViewPrivate))
  81
  82
  83
  84 #define MODEST_HEADER_VIEW_PTR "modest-header-view"
  85
  86 enum {
  87         HEADER_SELECTED_SIGNAL,
  88         HEADER_ACTIVATED_SIGNAL,
  89         ITEM_NOT_FOUND_SIGNAL,
  90         STATUS_UPDATE_SIGNAL,
  91         LAST_SIGNAL
  92 };
  93
  94 /* globals */
  95 static GObjectClass *parent_class = NULL;
  96
  97 /* uncomment the following if you have defined any signals */
  98 static guint signals[LAST_SIGNAL] = {0};
  99
 100 GType
 101 modest_header_view_get_type (void)
 102 {
 103         static GType my_type = 0;
 104         if (!my_type) {
 105                 static const GTypeInfo my_info = {
 106                         sizeof(ModestHeaderViewClass),
 107                         NULL,           /* base init */
 108                         NULL,           /* base finalize */
 109                         (GClassInitFunc) modest_header_view_class_init,
 110                         NULL,           /* class finalize */
 111                         NULL,           /* class data */
 112                         sizeof(ModestHeaderView),
 113                         1,              /* n_preallocs */
 114                         (GInstanceInitFunc) modest_header_view_init,
 115                         NULL
 116                 };
 117                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 118                                                   "ModestHeaderView",
 119                                                   &my_info, 0);
 120         }
 121         return my_type;
 122 }
 123
 124 static void
 125 modest_header_view_class_init (ModestHeaderViewClass *klass)
 126 {
 127         GObjectClass *gobject_class;
 128         gobject_class = (GObjectClass*) klass;
 129
 130         parent_class            = g_type_class_peek_parent (klass);
 131         gobject_class->finalize = modest_header_view_finalize;
 132
 133         g_type_class_add_private (gobject_class, sizeof(ModestHeaderViewPrivate));
 134
 135         signals[HEADER_SELECTED_SIGNAL] =
 136                 g_signal_new ("header_selected",
 137                               G_TYPE_FROM_CLASS (gobject_class),
 138                               G_SIGNAL_RUN_FIRST,
 139                               G_STRUCT_OFFSET (ModestHeaderViewClass,header_selected),
 140                               NULL, NULL,
 141                               g_cclosure_marshal_VOID__POINTER,
 142                               G_TYPE_NONE, 1, G_TYPE_POINTER);
 143
 144         signals[HEADER_ACTIVATED_SIGNAL] =
 145                 g_signal_new ("header_activated",
 146                               G_TYPE_FROM_CLASS (gobject_class),
 147                               G_SIGNAL_RUN_FIRST,
 148                               G_STRUCT_OFFSET (ModestHeaderViewClass,header_activated),
 149                               NULL, NULL,
 150                               g_cclosure_marshal_VOID__POINTER,
 151                               G_TYPE_NONE, 1, G_TYPE_POINTER);
 152
 153
 154         signals[ITEM_NOT_FOUND_SIGNAL] =
 155                 g_signal_new ("item_not_found",
 156                               G_TYPE_FROM_CLASS (gobject_class),
 157                               G_SIGNAL_RUN_FIRST,
 158                               G_STRUCT_OFFSET (ModestHeaderViewClass,item_not_found),
 159                               NULL, NULL,
 160                               g_cclosure_marshal_VOID__INT,
 161                               G_TYPE_NONE, 1, G_TYPE_INT);
 162
 163         signals[STATUS_UPDATE_SIGNAL] =
 164                 g_signal_new ("status_update",
 165                               G_TYPE_FROM_CLASS (gobject_class),
 166                               G_SIGNAL_RUN_FIRST,
 167                               G_STRUCT_OFFSET (ModestHeaderViewClass,status_update),
 168                               NULL, NULL,
 169                               modest_marshal_VOID__STRING_INT_INT,
 170                               G_TYPE_NONE, 3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
 171 }
 172
 173 static GtkTreeViewColumn*
 174 get_new_column (const gchar *name, GtkCellRenderer *renderer,
 175                 gboolean resizable, gint sort_col_id, gboolean show_as_text,
 176                 GtkTreeCellDataFunc cell_data_func, gpointer user_data)
 177 {
 178         GtkTreeViewColumn *column;
 179
 180         column =  gtk_tree_view_column_new_with_attributes(name, renderer, NULL);
 181         gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
 182
 183         gtk_tree_view_column_set_resizable (column, resizable);
 184         if (resizable)
 185                 gtk_tree_view_column_set_expand (column, TRUE);
 186
 187         if (show_as_text)
 188                 gtk_tree_view_column_add_attribute (column, renderer, "text",
 189                                                     sort_col_id);
 190         if (sort_col_id >= 0)
 191                 gtk_tree_view_column_set_sort_column_id (column, sort_col_id);
 192
 193         gtk_tree_view_column_set_sort_indicator (column, FALSE);
 194         gtk_tree_view_column_set_reorderable (column, TRUE);
 195
 196         if (cell_data_func)
 197                 gtk_tree_view_column_set_cell_data_func(column, renderer, cell_data_func,
 198                                                         user_data, NULL);
 199         return column;
 200 }
 201
 202
 203
 204
 205 static void
 206 remove_all_columns (ModestHeaderView *obj)
 207 {
 208         GList *columns, *cursor;
 209
 210         columns = gtk_tree_view_get_columns (GTK_TREE_VIEW(obj));
 211
 212         for (cursor = columns; cursor; cursor = cursor->next)
 213                 gtk_tree_view_remove_column (GTK_TREE_VIEW(obj),
 214                                              GTK_TREE_VIEW_COLUMN(cursor->data));
 215         g_list_free (columns);
 216 }
 217
 218 gboolean
 219 modest_header_view_set_columns (ModestHeaderView *self, const GList *columns)
 220 {
 221         GtkTreeModel *sortable;
 222         GtkTreeViewColumn *column=NULL;
 223         GtkTreeSelection *selection = NULL;
 224         GtkCellRenderer *renderer_msgtype,*renderer_header,
 225                 *renderer_attach,  *renderer_comptact_flag,
 226                 *renderer_compact_date;
 227         ModestHeaderViewPrivate *priv;
 228         const GList *cursor;
 229
 230         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 231
 232         /* FIXME: check whether these renderers need to be freed */
 233         renderer_msgtype = gtk_cell_renderer_pixbuf_new ();
 234         renderer_attach  = gtk_cell_renderer_pixbuf_new ();
 235         renderer_header  = gtk_cell_renderer_text_new ();
 236         renderer_comptact_flag  = gtk_cell_renderer_pixbuf_new ();
 237         renderer_compact_date  = gtk_cell_renderer_text_new ();
 238
 239         g_object_set(G_OBJECT(renderer_header),
 240                      "ellipsize", PANGO_ELLIPSIZE_END,
 241                      NULL);
 242         g_object_set(G_OBJECT(renderer_compact_date),
 243                      "xalign", 1.0,
 244                      NULL);
 245
 246         remove_all_columns (self);
 247
 248         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 249         gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE);
 250         sortable = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
 251
 252         /* Add new columns */
 253         for (cursor = columns; cursor; cursor = g_list_next(cursor)) {
 254                 ModestHeaderViewColumn col =
 255                         (ModestHeaderViewColumn) GPOINTER_TO_INT(cursor->data);
 256
 257                 if (0> col || col >= MODEST_HEADER_VIEW_COLUMN_NUM) {
 258                         g_printerr ("modest: invalid column %d in column list\n", col);
 259                         continue;
 260                 }
 261
 262                 switch (col) {
 263
 264                 case MODEST_HEADER_VIEW_COLUMN_MSGTYPE:
 265                         column = get_new_column (_("M"), renderer_msgtype, FALSE,
 266                                                  TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN,
 267                                                  FALSE,
 268                                                  (GtkTreeCellDataFunc)_modest_header_view_msgtype_cell_data,
 269                                                  NULL);
 270                         gtk_tree_view_column_set_fixed_width (column, 45);
 271                         break;
 272
 273                 case MODEST_HEADER_VIEW_COLUMN_ATTACH:
 274                         column = get_new_column (_("A"), renderer_attach, FALSE,
 275                                                  TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN,
 276                                                  FALSE,
 277                                                  (GtkTreeCellDataFunc)_modest_header_view_attach_cell_data,
 278                                                  NULL);
 279                         gtk_tree_view_column_set_fixed_width (column, 45);
 280                         break;
 281
 282
 283                 case MODEST_HEADER_VIEW_COLUMN_FROM:
 284                         column = get_new_column (_("From"), renderer_header, TRUE,
 285                                                  TNY_GTK_HEADER_LIST_MODEL_FROM_COLUMN,
 286                                                  TRUE,
 287                                                  (GtkTreeCellDataFunc)_modest_header_view_sender_receiver_cell_data,
 288                                                  GINT_TO_POINTER(TRUE));
 289                         break;
 290
 291                 case MODEST_HEADER_VIEW_COLUMN_TO:
 292                         column = get_new_column (_("To"), renderer_header, TRUE,
 293                                                  TNY_GTK_HEADER_LIST_MODEL_TO_COLUMN,
 294                                                  TRUE,
 295                                                  (GtkTreeCellDataFunc)_modest_header_view_sender_receiver_cell_data,
 296                                                  GINT_TO_POINTER(FALSE));
 297                         break;
 298
 299                 case MODEST_HEADER_VIEW_COLUMN_COMPACT_FLAG:
 300                         column = get_new_column (_("F"), renderer_comptact_flag, FALSE,
 301                                                  TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN,
 302                                                  FALSE,
 303                                                  (GtkTreeCellDataFunc)_modest_header_view_compact_flag_cell_data,
 304                                                  NULL);
 305                         gtk_tree_view_column_set_fixed_width (column, 45);
 306                         break;
 307
 308                 case MODEST_HEADER_VIEW_COLUMN_COMPACT_HEADER_IN:
 309                         column = get_new_column (_("Header"), renderer_header, TRUE,
 310                                                  TNY_GTK_HEADER_LIST_MODEL_FROM_COLUMN,
 311                                                  TRUE,
 312                                                  (GtkTreeCellDataFunc)_modest_header_view_compact_header_cell_data,
 313                                                  GINT_TO_POINTER(TRUE));
 314                         break;
 315
 316                 case MODEST_HEADER_VIEW_COLUMN_COMPACT_HEADER_OUT:
 317                         column = get_new_column (_("Header"), renderer_header, TRUE,
 318                                                  TNY_GTK_HEADER_LIST_MODEL_FROM_COLUMN,
 319                                                  TRUE,
 320                                                  (GtkTreeCellDataFunc)_modest_header_view_compact_header_cell_data,
 321                                                  GINT_TO_POINTER(FALSE));
 322                         break;
 323
 324
 325                 case MODEST_HEADER_VIEW_COLUMN_SUBJECT:
 326                         column = get_new_column (_("Subject"), renderer_header, TRUE,
 327                                                  TNY_GTK_HEADER_LIST_MODEL_SUBJECT_COLUMN,
 328                                                  TRUE,
 329                                                  (GtkTreeCellDataFunc)_modest_header_view_header_cell_data,
 330                                                  NULL);
 331                         break;
 332
 333                 case MODEST_HEADER_VIEW_COLUMN_RECEIVED_DATE:
 334                         column = get_new_column (_("Received"), renderer_header, TRUE,
 335                                                  TNY_GTK_HEADER_LIST_MODEL_DATE_RECEIVED_TIME_T_COLUMN,
 336                                                  TRUE,
 337                                                  (GtkTreeCellDataFunc)_modest_header_view_date_cell_data,
 338                                                  GINT_TO_POINTER(TRUE));
 339                         break;
 340
 341                 case MODEST_HEADER_VIEW_COLUMN_SENT_DATE:
 342                         column = get_new_column (_("Sent"), renderer_header, TRUE,
 343                                                  TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN,
 344                                                  TRUE,
 345                                                  (GtkTreeCellDataFunc)_modest_header_view_date_cell_data,
 346                                                  GINT_TO_POINTER(FALSE));
 347                         break;
 348
 349                 case MODEST_HEADER_VIEW_COLUMN_COMPACT_RECEIVED_DATE:
 350                         column = get_new_column (_("Received"), renderer_compact_date, FALSE,
 351                                                  TNY_GTK_HEADER_LIST_MODEL_DATE_RECEIVED_TIME_T_COLUMN,
 352                                                  TRUE,
 353                                                  (GtkTreeCellDataFunc)_modest_header_view_compact_date_cell_data,
 354                                                  GINT_TO_POINTER(TRUE));
 355                         gtk_tree_view_column_set_fixed_width (column, 130);
 356                         /* FIXME: this value must be stored in configuration */
 357                         gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 358                                                               TNY_GTK_HEADER_LIST_MODEL_DATE_RECEIVED_TIME_T_COLUMN,
 359                                                               GTK_SORT_DESCENDING);
 360
 361                         break;
 362
 363                 case MODEST_HEADER_VIEW_COLUMN_COMPACT_SENT_DATE:
 364                         column = get_new_column (_("Sent"), renderer_compact_date, FALSE,
 365                                                  TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN,
 366                                                  TRUE,
 367                                                  (GtkTreeCellDataFunc)_modest_header_view_compact_date_cell_data,
 368                                                  GINT_TO_POINTER(FALSE));
 369                         gtk_tree_view_column_set_fixed_width (column, 130);
 370                         /* FIXME: this value must be stored in configuration */
 371                         gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 372                                                               TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN,
 373                                                               GTK_SORT_DESCENDING);
 374                         break;
 375                 case MODEST_HEADER_VIEW_COLUMN_SIZE:
 376                         column = get_new_column (_("Size"), renderer_header, TRUE,
 377                                                  TNY_GTK_HEADER_LIST_MODEL_MESSAGE_SIZE_COLUMN,
 378                                                  FALSE,
 379                                                  (GtkTreeCellDataFunc)_modest_header_view_size_cell_data,
 380                                                  NULL);
 381                         break;
 382                 case MODEST_HEADER_VIEW_COLUMN_STATUS:
 383                         column = get_new_column (_("Status"), renderer_compact_date, TRUE,
 384                                                  TNY_GTK_HEADER_LIST_MODEL_MESSAGE_SIZE_COLUMN,
 385                                                  FALSE,
 386                                                  (GtkTreeCellDataFunc)_modest_header_view_status_cell_data,
 387                                                  NULL);
 388                         break;
 389
 390                 default:
 391                         g_return_val_if_reached(FALSE);
 392                 }
 393
 394                 if (sortable)
 395                         gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE(sortable),
 396                                                          col, (GtkTreeIterCompareFunc)cmp_rows,
 397                                                          column, NULL);
 398
 399                 /* we keep the column id around */
 400                 g_object_set_data (G_OBJECT(column), MODEST_HEADER_VIEW_COLUMN,
 401                                    GINT_TO_POINTER(col));
 402
 403                 /* we need this ptr when sorting the rows */
 404                 g_object_set_data (G_OBJECT(column), MODEST_HEADER_VIEW_PTR,
 405                                    self);
 406                 gtk_tree_view_append_column (GTK_TREE_VIEW(self), column);
 407         }
 408
 409         return TRUE;
 410 }
 411
 412 static void
 413 modest_header_view_init (ModestHeaderView *obj)
 414 {
 415         ModestHeaderViewPrivate *priv;
 416
 417         priv = MODEST_HEADER_VIEW_GET_PRIVATE(obj);
 418
 419         priv->folder  = NULL;
 420
 421         priv->monitor        = NULL;
 422         priv->monitor_lock   = g_mutex_new ();
 423
 424
 425         setup_drag_and_drop (GTK_TREE_VIEW (obj));
 426 }
 427
 428 static void
 429 modest_header_view_finalize (GObject *obj)
 430 {
 431         ModestHeaderView        *self;
 432         ModestHeaderViewPrivate *priv;
 433
 434         self = MODEST_HEADER_VIEW(obj);
 435         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 436
 437         g_mutex_lock (priv->monitor_lock);
 438         if (priv->monitor) {
 439                 tny_folder_monitor_stop (priv->monitor);
 440                 g_object_unref (G_OBJECT (priv->monitor));
 441         }
 442         g_mutex_unlock (priv->monitor_lock);
 443         g_mutex_free (priv->monitor_lock);
 444
 445         if (priv->folder) {
 446                 g_object_unref (G_OBJECT (priv->folder));
 447                 priv->folder   = NULL;
 448         }
 449
 450         G_OBJECT_CLASS(parent_class)->finalize (obj);
 451 }
 452
 453
 454 GtkWidget*
 455 modest_header_view_new (TnyFolder *folder, ModestHeaderViewStyle style)
 456 {
 457         GObject *obj;
 458         GtkTreeSelection *sel;
 459         ModestHeaderView *self;
 460         ModestHeaderViewPrivate *priv;
 461
 462         g_return_val_if_fail (style >= 0 && style < MODEST_HEADER_VIEW_STYLE_NUM,
 463                               NULL);
 464
 465         obj  = G_OBJECT(g_object_new(MODEST_TYPE_HEADER_VIEW, NULL));
 466         self = MODEST_HEADER_VIEW(obj);
 467         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 468
 469         modest_header_view_set_style   (self, style);
 470         modest_header_view_set_folder (self, NULL);
 471
 472         gtk_tree_view_columns_autosize (GTK_TREE_VIEW(obj));
 473         gtk_tree_view_set_fixed_height_mode (GTK_TREE_VIEW(obj),TRUE);
 474         gtk_tree_view_set_enable_search (GTK_TREE_VIEW(obj), TRUE);
 475
 476         gtk_tree_view_set_rules_hint (GTK_TREE_VIEW(obj),
 477                                       TRUE); /* alternating row colors */
 478         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 479
 480         g_signal_connect (sel, "changed",
 481                           G_CALLBACK(on_selection_changed), self);
 482
 483         g_signal_connect (self, "button-press-event",
 484                           G_CALLBACK(on_header_clicked), NULL);
 485
 486         g_signal_connect (self, "focus-in-event",
 487                           G_CALLBACK(on_focus_in), NULL);
 488
 489         return GTK_WIDGET(self);
 490 }
 491
 492
 493 TnyList *
 494 modest_header_view_get_selected_headers (ModestHeaderView *self)
 495 {
 496         GtkTreeSelection *sel;
 497         ModestHeaderViewPrivate *priv;
 498         TnyList *header_list = NULL;
 499         TnyHeader *header;
 500         GList *list, *tmp = NULL;
 501         GtkTreeModel *tree_model = NULL;
 502         GtkTreeIter iter;
 503
 504         g_return_val_if_fail (self, NULL);
 505
 506         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 507
 508         /* Get selected rows */
 509         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 510         list = gtk_tree_selection_get_selected_rows (sel, &tree_model);
 511
 512         if (list) {
 513                 header_list = tny_simple_list_new();
 514
 515                 list = g_list_reverse (list);
 516                 tmp = list;
 517                 while (tmp) {
 518                         /* get header from selection */
 519                         gtk_tree_model_get_iter (tree_model, &iter, (GtkTreePath *) (tmp->data));
 520                         gtk_tree_model_get (tree_model, &iter,
 521                                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 522                                             &header, -1);
 523                         /* Prepend to list */
 524                         tny_list_prepend (header_list, G_OBJECT (header));
 525                         g_object_unref (G_OBJECT (header));
 526
 527                         tmp = g_list_next (tmp);
 528                 }
 529                 /* Clean up*/
 530                 g_list_foreach (list, (GFunc) gtk_tree_path_free, NULL);
 531                 g_list_free (list);
 532         }
 533         return header_list;
 534 }
 535
 536
 537 /* scroll our list view so the selected item is visible */
 538 static void
 539 scroll_to_selected (ModestHeaderView *self, GtkTreeIter *iter, gboolean up)
 540 {
 541 #ifdef MODEST_PLATFORM_GNOME
 542
 543         GtkTreePath *selected_path;
 544         GtkTreePath *start, *end;
 545
 546         GtkTreeModel *model;
 547
 548         model         = gtk_tree_view_get_model (GTK_TREE_VIEW(self));
 549         selected_path = gtk_tree_model_get_path (model, iter);
 550
 551         start = gtk_tree_path_new ();
 552         end   = gtk_tree_path_new ();
 553
 554         gtk_tree_view_get_visible_range (GTK_TREE_VIEW(self), &start, &end);
 555
 556         if (gtk_tree_path_compare (selected_path, start) < 0 ||
 557             gtk_tree_path_compare (end, selected_path) < 0)
 558                 gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW(self),
 559                                               selected_path, NULL, TRUE,
 560                                               up ? 0.0 : 1.0,
 561                                               up ? 0.0 : 1.0);
 562         gtk_tree_path_free (selected_path);
 563         gtk_tree_path_free (start);
 564         gtk_tree_path_free (end);
 565
 566 #endif /* MODEST_PLATFORM_GNOME */
 567 }
 568
 569
 570 void
 571 modest_header_view_select_next (ModestHeaderView *self)
 572 {
 573         GtkTreeSelection *sel;
 574         GtkTreeIter iter;
 575         GtkTreeModel *model;
 576         GtkTreePath *path;
 577
 578         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
 579         path = get_selected_row (GTK_TREE_VIEW(self), &model);
 580         if ((path != NULL) && (gtk_tree_model_get_iter(model, &iter, path))) {
 581                 /* Unselect previous path */
 582                 gtk_tree_selection_unselect_path (sel, path);
 583
 584                 /* Move path down and selects new one  */
 585                 if (gtk_tree_model_iter_next (model, &iter)) {
 586                         gtk_tree_selection_select_iter (sel, &iter);
 587                         scroll_to_selected (self, &iter, FALSE);
 588                 }
 589                 gtk_tree_path_free(path);
 590         }
 591
 592 }
 593
 594 void
 595 modest_header_view_select_prev (ModestHeaderView *self)
 596 {
 597         GtkTreeSelection *sel;
 598         GtkTreeIter iter;
 599         GtkTreeModel *model;
 600         GtkTreePath *path;
 601
 602         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
 603         path = get_selected_row (GTK_TREE_VIEW(self), &model);
 604         if ((path != NULL) && (gtk_tree_model_get_iter(model, &iter, path))) {
 605                 /* Unselect previous path */
 606                 gtk_tree_selection_unselect_path (sel, path);
 607
 608                 /* Move path up */
 609                 if (gtk_tree_path_prev (path)) {
 610                         gtk_tree_model_get_iter (model, &iter, path);
 611
 612                         /* Select the new one */
 613                         gtk_tree_selection_select_iter (sel, &iter);
 614                         scroll_to_selected (self, &iter, TRUE);
 615
 616                 }
 617                 gtk_tree_path_free (path);
 618         }
 619 }
 620
 621 GList*
 622 modest_header_view_get_columns (ModestHeaderView *self)
 623 {
 624         g_return_val_if_fail (self, FALSE);
 625         return gtk_tree_view_get_columns (GTK_TREE_VIEW(self));
 626 }
 627
 628 gboolean
 629 modest_header_view_is_empty (ModestHeaderView *self)
 630 {
 631         g_return_val_if_fail (self, FALSE);
 632         return FALSE; /* FIXME */
 633 }
 634
 635
 636 gboolean
 637 modest_header_view_set_style (ModestHeaderView *self,
 638                               ModestHeaderViewStyle style)
 639 {
 640         ModestHeaderViewPrivate *priv;
 641         gboolean show_col_headers = FALSE;
 642         ModestHeaderViewStyle old_style;
 643
 644         g_return_val_if_fail (self, FALSE);
 645         g_return_val_if_fail (style >= 0 && MODEST_HEADER_VIEW_STYLE_NUM,
 646                               FALSE);
 647
 648         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 649         if (priv->style == style)
 650                 return TRUE; /* nothing to do */
 651
 652         switch (style) {
 653         case MODEST_HEADER_VIEW_STYLE_DETAILS:
 654                 show_col_headers = TRUE;
 655                 break;
 656         case MODEST_HEADER_VIEW_STYLE_TWOLINES:
 657                 break;
 658         default:
 659                 g_return_val_if_reached (FALSE);
 660         }
 661         gtk_tree_view_set_headers_visible   (GTK_TREE_VIEW(self), show_col_headers);
 662         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(self), show_col_headers);
 663
 664         old_style   = priv->style;
 665         priv->style = style;
 666
 667         return TRUE;
 668 }
 669
 670
 671 ModestHeaderViewStyle
 672 modest_header_view_get_style (ModestHeaderView *self)
 673 {
 674         g_return_val_if_fail (self, FALSE);
 675         return MODEST_HEADER_VIEW_GET_PRIVATE(self)->style;
 676 }
 677
 678 /*
 679  * This function sets a sortable model in the header view. It's just
 680  * used for developing purposes, because it only does a
 681  * gtk_tree_view_set_model
 682  */
 683 static void
 684 modest_header_view_set_model (GtkTreeView *header_view, GtkTreeModel *model)
 685 {
 686         GtkTreeModel *old_model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (header_view));
 687
 688         if (old_model_sort && GTK_IS_TREE_MODEL_SORT (old_model_sort)) {
 689                 GtkTreeModel *old_model;
 690                 ModestHeaderViewPrivate *priv;
 691
 692                 priv = MODEST_HEADER_VIEW_GET_PRIVATE (header_view);
 693                 old_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (old_model_sort));
 694
 695                 /* Set new model */
 696                 gtk_tree_view_set_model (header_view, model);
 697
 698                 modest_runtime_verify_object_death (old_model, "");
 699                 modest_runtime_verify_object_death (old_model_sort, "");
 700         } else
 701                 gtk_tree_view_set_model (header_view, model);
 702
 703         return;
 704 }
 705
 706 static void
 707 on_progress_changed (ModestMailOperation *mail_op,
 708                      ModestHeaderView *self)
 709 {
 710         GtkTreeModel *sortable;
 711         ModestHeaderViewPrivate *priv;
 712         GList *cols, *cursor;
 713         TnyList *headers;
 714
 715         if (!modest_mail_operation_is_finished (mail_op))
 716                 return;
 717
 718         if (modest_mail_operation_get_error (mail_op))
 719                 return;
 720
 721         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 722
 723         headers = TNY_LIST (tny_gtk_header_list_model_new ());
 724
 725         tny_gtk_header_list_model_set_folder (TNY_GTK_HEADER_LIST_MODEL(headers),
 726                                               priv->folder, TRUE);
 727
 728         sortable = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL(headers));
 729         g_object_unref (G_OBJECT (headers));
 730
 731         /* install our special sorting functions */
 732         cursor = cols = gtk_tree_view_get_columns (GTK_TREE_VIEW(self));
 733         while (cursor) {
 734                 gint col_id = GPOINTER_TO_INT (g_object_get_data(G_OBJECT(cursor->data),
 735                                                                  MODEST_HEADER_VIEW_COLUMN));
 736                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE(sortable),
 737                                                  col_id,
 738                                                  (GtkTreeIterCompareFunc) cmp_rows,
 739                                                  cursor->data, NULL);
 740                 cursor = g_list_next(cursor);
 741         }
 742         g_list_free (cols);
 743
 744         /* Set new model */
 745         modest_header_view_set_model (GTK_TREE_VIEW (self), sortable);
 746         g_object_unref (G_OBJECT (sortable));
 747
 748         /* Add a folder observer */
 749         g_mutex_lock (priv->monitor_lock);
 750         priv->monitor = TNY_FOLDER_MONITOR (tny_folder_monitor_new (priv->folder));
 751         tny_folder_monitor_add_list (priv->monitor, TNY_LIST (headers));
 752         tny_folder_monitor_start (priv->monitor);
 753         g_mutex_unlock (priv->monitor_lock);
 754 }
 755
 756 TnyFolder*
 757 modest_header_view_get_folder (ModestHeaderView *self)
 758 {
 759         ModestHeaderViewPrivate *priv;
 760         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 761
 762         if (priv->folder)
 763                 g_object_ref (priv->folder);
 764
 765         return priv->folder;
 766 }
 767
 768 static void
 769 modest_header_view_set_folder_intern (ModestHeaderView *self, TnyFolder *folder)
 770 {
 771         TnyList *headers;
 772         ModestHeaderViewPrivate *priv;
 773         GList *cols, *cursor;
 774         GtkTreeModel *sortable;
 775
 776         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 777
 778         headers = TNY_LIST (tny_gtk_header_list_model_new ());
 779
 780         tny_gtk_header_list_model_set_folder (TNY_GTK_HEADER_LIST_MODEL(headers),
 781                                               folder, FALSE);
 782
 783         /* Add a folder observer */
 784         g_mutex_lock (priv->monitor_lock);
 785         if (priv->monitor) {
 786                 tny_folder_monitor_stop (priv->monitor);
 787                 g_object_unref (G_OBJECT (priv->monitor));
 788         }
 789         priv->monitor = TNY_FOLDER_MONITOR (tny_folder_monitor_new (folder));
 790         tny_folder_monitor_add_list (priv->monitor, TNY_LIST (headers));
 791         tny_folder_monitor_start (priv->monitor);
 792         g_mutex_unlock (priv->monitor_lock);
 793
 794
 795         sortable = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL(headers));
 796         g_object_unref (G_OBJECT (headers));
 797
 798         /* install our special sorting functions */
 799         cursor = cols = gtk_tree_view_get_columns (GTK_TREE_VIEW(self));
 800         while (cursor) {
 801                 gint col_id = GPOINTER_TO_INT (g_object_get_data(G_OBJECT(cursor->data),
 802                                                                  MODEST_HEADER_VIEW_COLUMN));
 803                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE(sortable),
 804                                                  col_id,
 805                                                  (GtkTreeIterCompareFunc) cmp_rows,
 806                                                  cursor->data, NULL);
 807                 cursor = g_list_next(cursor);
 808         }
 809         g_list_free (cols);
 810
 811
 812         /* Set new model */
 813         modest_header_view_set_model (GTK_TREE_VIEW (self), sortable);
 814         g_object_unref (G_OBJECT (sortable));
 815 }
 816
 817 void
 818 modest_header_view_set_folder (ModestHeaderView *self, TnyFolder *folder)
 819 {
 820         ModestHeaderViewPrivate *priv;
 821
 822         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 823
 824         if (priv->folder) {
 825                 g_object_unref (priv->folder);
 826                 priv->folder = NULL;
 827         }
 828
 829         if (folder) {
 830                 ModestMailOperation *mail_op;
 831
 832                 modest_header_view_set_folder_intern (self, folder);
 833
 834                 /* Pick my reference. Nothing to do with the mail operation */
 835                 priv->folder = g_object_ref (folder);
 836
 837                 /* no message selected */
 838                 g_signal_emit (G_OBJECT(self), signals[HEADER_SELECTED_SIGNAL], 0, NULL);
 839
 840                 /* Create the mail operation */
 841                 mail_op = modest_mail_operation_new ();
 842                 modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
 843                                                  mail_op);
 844
 845                 /* Register a mail operation observer */
 846                 g_signal_connect (mail_op, "progress-changed",
 847                                   G_CALLBACK (on_progress_changed), self);
 848
 849                 /* Refresh the folder asynchronously */
 850                 modest_mail_operation_refresh_folder (mail_op, folder);
 851
 852                 /* Free */
 853                 g_object_unref (mail_op);
 854
 855         } else {
 856                 g_mutex_lock (priv->monitor_lock);
 857                 modest_header_view_set_model (GTK_TREE_VIEW (self), NULL);
 858
 859                 if (priv->monitor) {
 860                         tny_folder_monitor_stop (priv->monitor);
 861                         g_object_unref (G_OBJECT (priv->monitor));
 862                         priv->monitor = NULL;
 863                 }
 864                 g_mutex_unlock (priv->monitor_lock);
 865         }
 866 }
 867
 868 static gboolean
 869 on_header_clicked (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
 870 {
 871         ModestHeaderView *self = NULL;
 872         ModestHeaderViewPrivate *priv = NULL;
 873         GtkTreePath *path = NULL;
 874         GtkTreeIter iter;
 875         GtkTreeModel *model = NULL;
 876         TnyHeader *header;
 877         /* ignore everything but doubleclick */
 878         if (event->type != GDK_2BUTTON_PRESS)
 879                 return FALSE;
 880
 881         self = MODEST_HEADER_VIEW (widget);
 882         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 883
 884         path = get_selected_row (GTK_TREE_VIEW(self), &model);
 885         if ((path == NULL) || (!gtk_tree_model_get_iter(model, &iter, path)))
 886                 return FALSE;
 887
 888         /* get the first selected item */
 889         gtk_tree_model_get (model, &iter,
 890                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 891                             &header, -1);
 892         /* Emit signal */
 893         g_signal_emit (G_OBJECT(self),
 894                        signals[HEADER_ACTIVATED_SIGNAL],
 895                        0, header);
 896
 897         /* Free */
 898         g_object_unref (G_OBJECT (header));
 899         gtk_tree_path_free(path);
 900
 901         return TRUE;
 902 }
 903
 904
 905 static void
 906 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 907 {
 908         GtkTreeModel *model;
 909         TnyHeader *header;
 910         GtkTreePath *path = NULL;
 911         GtkTreeIter iter;
 912         ModestHeaderView *self;
 913         ModestHeaderViewPrivate *priv;
 914
 915         g_return_if_fail (sel);
 916         g_return_if_fail (user_data);
 917
 918         self = MODEST_HEADER_VIEW (user_data);
 919         priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 920
 921         path = get_selected_row (GTK_TREE_VIEW(self), &model);
 922         if ((path == NULL) || (!gtk_tree_model_get_iter(model, &iter, path)))
 923                 return; /* msg was _un_selected */
 924
 925         gtk_tree_model_get (model, &iter,
 926                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 927                             &header, -1);
 928
 929         /* Emit signal */
 930         g_signal_emit (G_OBJECT(self),
 931                        signals[HEADER_SELECTED_SIGNAL],
 932                        0, header);
 933
 934         g_object_unref (G_OBJECT (header));
 935         gtk_tree_path_free(path);
 936 }
 937
 938
 939 /* PROTECTED method. It's useful when we want to force a given
 940    selection to reload a msg. For example if we have selected a header
 941    in offline mode, when Modest become online, we want to reload the
 942    message automatically without an user click over the header */
 943 void
 944 _modest_header_view_change_selection (GtkTreeSelection *selection,
 945                                       gpointer user_data)
 946 {
 947         g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
 948         g_return_if_fail (MODEST_IS_HEADER_VIEW (user_data));
 949
 950         on_selection_changed (selection, user_data);
 951 }
 952
 953
 954 static gint
 955 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 956           gpointer user_data)
 957 {
 958         gint col_id;
 959         gint t1, t2;
 960         gint val1, val2;
 961         gchar *s1, *s2;
 962         gint cmp;
 963
 964         static int counter = 0;
 965         col_id = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(user_data), MODEST_HEADER_VIEW_COLUMN));
 966
 967         if (!(++counter % 100)) {
 968                 GObject *header_view = g_object_get_data(G_OBJECT(user_data),
 969                                                          MODEST_HEADER_VIEW_PTR);
 970                 g_signal_emit (header_view,
 971                                signals[STATUS_UPDATE_SIGNAL],
 972                                0, _("Sorting..."), 0, 0);
 973         }
 974         switch (col_id) {
 975
 976                 /* first one, we decide based on the time */
 977         case MODEST_HEADER_VIEW_COLUMN_COMPACT_HEADER_IN:
 978         case MODEST_HEADER_VIEW_COLUMN_COMPACT_RECEIVED_DATE:
 979         case MODEST_HEADER_VIEW_COLUMN_RECEIVED_DATE:
 980
 981                 gtk_tree_model_get (tree_model, iter1,
 982                                     TNY_GTK_HEADER_LIST_MODEL_DATE_RECEIVED_TIME_T_COLUMN,
 983                                     &t1,-1);
 984                 gtk_tree_model_get (tree_model, iter2,
 985                                     TNY_GTK_HEADER_LIST_MODEL_DATE_RECEIVED_TIME_T_COLUMN,
 986                                     &t2,-1);
 987                 return t1 - t2;
 988
 989         case MODEST_HEADER_VIEW_COLUMN_COMPACT_HEADER_OUT:
 990         case MODEST_HEADER_VIEW_COLUMN_COMPACT_SENT_DATE:
 991         case MODEST_HEADER_VIEW_COLUMN_SENT_DATE:
 992                 gtk_tree_model_get (tree_model, iter1,
 993                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN,
 994                                     &t1,-1);
 995                 gtk_tree_model_get (tree_model, iter2,
 996                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN,
 997                                     &t2,-1);
 998                 return t1 - t2;
 999
1000
1001                 /* next ones, we try the search criteria first, if they're the same, then we use 'sent date' */
1002                 /* FIXME: what about received-date? */
1003         case MODEST_HEADER_VIEW_COLUMN_SUBJECT: {
1004
1005                 gtk_tree_model_get (tree_model, iter1,
1006                                     TNY_GTK_HEADER_LIST_MODEL_SUBJECT_COLUMN, &s1,
1007                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t1,
1008                                     -1);
1009                 gtk_tree_model_get (tree_model, iter2,
1010                                     TNY_GTK_HEADER_LIST_MODEL_SUBJECT_COLUMN, &s2,
1011                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t2,
1012                                     -1);
1013
1014                 /* the prefix ('Re:', 'Fwd:' etc.) we ignore */
1015                 cmp = modest_text_utils_utf8_strcmp (s1 + modest_text_utils_get_subject_prefix_len(s1),
1016                                                      s2 + modest_text_utils_get_subject_prefix_len(s2),
1017                                                      TRUE);
1018                 g_free (s1);
1019                 g_free (s2);
1020
1021                 return cmp ? cmp : t1 - t2;
1022         }
1023
1024         case MODEST_HEADER_VIEW_COLUMN_FROM:
1025
1026                 gtk_tree_model_get (tree_model, iter1,
1027                                     TNY_GTK_HEADER_LIST_MODEL_FROM_COLUMN, &s1,
1028                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t1,
1029                                     -1);
1030                 gtk_tree_model_get (tree_model, iter2,
1031                                     TNY_GTK_HEADER_LIST_MODEL_FROM_COLUMN, &s2,
1032                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t2,
1033                                     -1);
1034                 cmp = modest_text_utils_utf8_strcmp (s1, s2, TRUE);
1035                 g_free (s1);
1036                 g_free (s2);
1037
1038                 return cmp ? cmp : t1 - t2;
1039
1040         case MODEST_HEADER_VIEW_COLUMN_TO:
1041
1042                 gtk_tree_model_get (tree_model, iter1,
1043                                     TNY_GTK_HEADER_LIST_MODEL_TO_COLUMN, &s1,
1044                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t1,
1045                                     -1);
1046                 gtk_tree_model_get (tree_model, iter2,
1047                                     TNY_GTK_HEADER_LIST_MODEL_TO_COLUMN, &s2,
1048                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t2,
1049                                     -1);
1050                 cmp = modest_text_utils_utf8_strcmp (s1, s2, TRUE);
1051                 g_free (s1);
1052                 g_free (s2);
1053
1054                 return cmp ? cmp : t1 - t2;
1055
1056         case MODEST_HEADER_VIEW_COLUMN_ATTACH:
1057
1058                 gtk_tree_model_get (tree_model, iter1, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &val1,
1059                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t1, -1);
1060                 gtk_tree_model_get (tree_model, iter2, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &val2,
1061                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t2, -1);
1062
1063                 cmp = (val1 & TNY_HEADER_FLAG_ATTACHMENTS) -
1064                         (val2 & TNY_HEADER_FLAG_ATTACHMENTS);
1065
1066                 return cmp ? cmp : t1 - t2;
1067
1068         case MODEST_HEADER_VIEW_COLUMN_MSGTYPE:
1069                 gtk_tree_model_get (tree_model, iter1, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &val1,
1070                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t1,-1);
1071                 gtk_tree_model_get (tree_model, iter2, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &val2,
1072                                     TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t2,-1);
1073                 cmp =  (val1 & TNY_HEADER_FLAG_SEEN) - (val2 & TNY_HEADER_FLAG_SEEN);
1074
1075                 return cmp ? cmp : t1 - t2;
1076
1077         default:
1078                 return &iter1 - &iter2; /* oughhhh  */
1079         }
1080 }
1081
1082 /* Drag and drop stuff */
1083 static void
1084 drag_data_get_cb (GtkWidget *widget, GdkDragContext *context,
1085                   GtkSelectionData *selection_data,
1086                   guint info,  guint time, gpointer data)
1087 {
1088         GtkTreeModel *model;
1089         GtkTreeIter iter;
1090         GtkTreePath *source_row;
1091
1092         source_row = get_selected_row (GTK_TREE_VIEW(widget), &model);
1093         if ((source_row == NULL) || (!gtk_tree_model_get_iter(model, &iter, source_row))) return;
1094
1095         switch (info) {
1096         case MODEST_HEADER_ROW:
1097                 gtk_tree_set_row_drag_data (selection_data, model, source_row);
1098                 break;
1099         case MODEST_MSG: {
1100                 TnyHeader *hdr;
1101                 gtk_tree_model_get (model, &iter,
1102                                     TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &hdr,
1103                                     -1);
1104                 if (hdr) {
1105                         g_object_unref (G_OBJECT(hdr));
1106                 }
1107                 break;
1108         }
1109         default:
1110                 g_message ("default");
1111         }
1112
1113         gtk_tree_path_free (source_row);
1114 }
1115
1116 /* Header view drag types */
1117 const GtkTargetEntry header_view_drag_types[] = {
1118         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP, MODEST_HEADER_ROW },
1119         { "text/uri-list",      0,                   MODEST_MSG },
1120
1121 };
1122
1123 static void
1124 setup_drag_and_drop (GtkTreeView *self)
1125 {
1126         gtk_drag_source_set (GTK_WIDGET (self),
1127                              GDK_BUTTON1_MASK,
1128                              header_view_drag_types,
1129                              G_N_ELEMENTS (header_view_drag_types),
1130                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1131
1132         g_signal_connect(G_OBJECT (self), "drag_data_get",
1133                          G_CALLBACK(drag_data_get_cb), NULL);
1134 }
1135
1136 static GtkTreePath *
1137 get_selected_row (GtkTreeView *self, GtkTreeModel **model)
1138 {
1139         GtkTreePath *path = NULL;
1140         GtkTreeSelection *sel = NULL;
1141         GList *rows = NULL;
1142
1143         sel   = gtk_tree_view_get_selection(self);
1144         rows = gtk_tree_selection_get_selected_rows (sel, model);
1145
1146         if ((rows == NULL) || (g_list_length(rows) != 1))
1147                 goto frees;
1148
1149         path = gtk_tree_path_copy(g_list_nth_data (rows, 0));
1150
1151
1152         /* Free */
1153  frees:
1154         g_list_foreach(rows,(GFunc) gtk_tree_path_free, NULL);
1155         g_list_free(rows);
1156
1157         return path;
1158 }
1159
1160 /*
1161  * This function moves the tree view scroll to the current selected
1162  * row when the widget grabs the focus
1163  */
1164 static gboolean
1165 on_focus_in (GtkWidget     *self,
1166              GdkEventFocus *event,
1167              gpointer       user_data)
1168 {
1169         GtkTreeSelection *selection;
1170         GtkTreeModel *model;
1171         GList *selected = NULL;
1172         GtkTreePath *selected_path = NULL;
1173
1174         model = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
1175         if (!model)
1176                 return FALSE;
1177
1178         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
1179         /* If none selected yet, pick the first one */
1180         if (gtk_tree_selection_count_selected_rows (selection) == 0) {
1181                 GtkTreeIter iter;
1182                 GtkTreePath *path;
1183
1184                 /* Return if the model is empty */
1185                 if (!gtk_tree_model_get_iter_first (model, &iter))
1186                         return FALSE;
1187
1188                 path = gtk_tree_model_get_path (model, &iter);
1189                 gtk_tree_selection_select_path (selection, path);
1190                 gtk_tree_path_free (path);
1191         }
1192
1193         /* Need to get the all the rows because is selection multiple */
1194         selected = gtk_tree_selection_get_selected_rows (selection, &model);
1195         selected_path = (GtkTreePath *) selected->data;
1196
1197         /* Check if we need to scroll */
1198         #if GTK_CHECK_VERSION(2, 8, 0) /* TODO: gtk_tree_view_get_visible_range() is only available in GTK+ 2.8 */
1199         GtkTreePath *start_path = NULL;
1200         GtkTreePath *end_path = NULL;
1201         if (gtk_tree_view_get_visible_range (GTK_TREE_VIEW (self),
1202                                              &start_path,
1203                                              &end_path)) {
1204
1205                 if ((gtk_tree_path_compare (start_path, selected_path) != -1) ||
1206                     (gtk_tree_path_compare (end_path, selected_path) != 1)) {
1207
1208                         /* Scroll to first path */
1209                         gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (self),
1210                                                       selected_path,
1211                                                       NULL,
1212                                                       TRUE,
1213                                                       0.5,
1214                                                       0.0);
1215                 }
1216         }
1217         #endif /* GTK_CHECK_VERSION */
1218
1219         /* Frees */
1220         g_list_foreach (selected, (GFunc) gtk_tree_path_free, NULL);
1221         g_list_free (selected);
1222
1223         return FALSE;
1224 }