git.maemo.org Git - modest/blob - src/widgets/modest-folder-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 <string.h>
  32
  33 #include <tny-account-store-view.h>
  34 #include <tny-gtk-account-list-model.h>
  35 #include <tny-gtk-folder-store-tree-model.h>
  36 #include <tny-gtk-header-list-model.h>
  37 #include <tny-folder.h>
  38 #include <tny-account-store.h>
  39 #include <tny-account.h>
  40 #include <tny-folder.h>
  41 #include <tny-camel-folder.h>
  42 #include <tny-simple-list.h>
  43 #include <modest-tny-folder.h>
  44 #include <modest-marshal.h>
  45 #include <modest-icon-names.h>
  46 #include <modest-tny-account-store.h>
  47 #include <modest-text-utils.h>
  48 #include <modest-runtime.h>
  49 #include "modest-folder-view.h"
  50 #include <modest-dnd.h>
  51
  52 /* 'private'/'protected' functions */
  53 static void modest_folder_view_class_init  (ModestFolderViewClass *klass);
  54 static void modest_folder_view_init        (ModestFolderView *obj);
  55 static void modest_folder_view_finalize    (GObject *obj);
  56
  57 static void         tny_account_store_view_init (gpointer g,
  58                                                  gpointer iface_data);
  59
  60 static void         modest_folder_view_set_account_store (TnyAccountStoreView *self,
  61                                                           TnyAccountStore     *account_store);
  62
  63 static gboolean     update_model           (ModestFolderView *self,
  64                                             ModestTnyAccountStore *account_store);
  65
  66 static void         on_selection_changed   (GtkTreeSelection *sel, gpointer data);
  67
  68 static void         on_account_update      (TnyAccountStore *account_store,
  69                                             const gchar *account,
  70                                             gpointer user_data);
  71
  72 static void         on_accounts_reloaded   (TnyAccountStore *store,
  73                                             gpointer user_data);
  74
  75 static gint         cmp_rows               (GtkTreeModel *tree_model,
  76                                             GtkTreeIter *iter1,
  77                                             GtkTreeIter *iter2,
  78                                             gpointer user_data);
  79
  80 /* DnD functions */
  81 static void         on_drag_data_get       (GtkWidget *widget,
  82                                             GdkDragContext *context,
  83                                             GtkSelectionData *selection_data,
  84                                             guint info,
  85                                             guint time,
  86                                             gpointer data);
  87
  88 static void         on_drag_data_received  (GtkWidget *widget,
  89                                             GdkDragContext *context,
  90                                             gint x,
  91                                             gint y,
  92                                             GtkSelectionData *selection_data,
  93                                             guint info,
  94                                             guint time,
  95                                             gpointer data);
  96
  97 static gboolean     on_drag_motion         (GtkWidget      *widget,
  98                                             GdkDragContext *context,
  99                                             gint            x,
 100                                             gint            y,
 101                                             guint           time,
 102                                             gpointer        user_data);
 103
 104 static gint         expand_row_timeout     (gpointer data);
 105
 106 static void         setup_drag_and_drop    (GtkTreeView *self);
 107
 108 enum {
 109         FOLDER_SELECTION_CHANGED_SIGNAL,
 110         LAST_SIGNAL
 111 };
 112
 113 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 114 struct _ModestFolderViewPrivate {
 115         TnyAccountStore     *account_store;
 116         TnyFolder           *cur_folder;
 117         GtkTreeRowReference *cur_row;
 118
 119         gulong               account_update_signal;
 120         gulong               changed_signal;
 121         gulong               accounts_reloaded_signal;
 122
 123         GtkTreeSelection    *cur_selection;
 124         TnyFolderStoreQuery *query;
 125         guint                timer_expander;
 126 };
 127 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 128         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 129                                      MODEST_TYPE_FOLDER_VIEW,   \
 130                                      ModestFolderViewPrivate))
 131 /* globals */
 132 static GObjectClass *parent_class = NULL;
 133
 134 static guint signals[LAST_SIGNAL] = {0};
 135
 136 GType
 137 modest_folder_view_get_type (void)
 138 {
 139         static GType my_type = 0;
 140         if (!my_type) {
 141                 static const GTypeInfo my_info = {
 142                         sizeof(ModestFolderViewClass),
 143                         NULL,           /* base init */
 144                         NULL,           /* base finalize */
 145                         (GClassInitFunc) modest_folder_view_class_init,
 146                         NULL,           /* class finalize */
 147                         NULL,           /* class data */
 148                         sizeof(ModestFolderView),
 149                         1,              /* n_preallocs */
 150                         (GInstanceInitFunc) modest_folder_view_init,
 151                         NULL
 152                 };
 153
 154                 static const GInterfaceInfo tny_account_store_view_info = {
 155                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 156                         NULL,         /* interface_finalize */
 157                         NULL          /* interface_data */
 158                 };
 159
 160
 161                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 162                                                   "ModestFolderView",
 163                                                   &my_info, 0);
 164
 165                 g_type_add_interface_static (my_type,
 166                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 167                                              &tny_account_store_view_info);
 168         }
 169         return my_type;
 170 }
 171
 172 static void
 173 modest_folder_view_class_init (ModestFolderViewClass *klass)
 174 {
 175         GObjectClass *gobject_class;
 176         gobject_class = (GObjectClass*) klass;
 177
 178         parent_class            = g_type_class_peek_parent (klass);
 179         gobject_class->finalize = modest_folder_view_finalize;
 180
 181         g_type_class_add_private (gobject_class,
 182                                   sizeof(ModestFolderViewPrivate));
 183
 184         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 185                 g_signal_new ("folder_selection_changed",
 186                               G_TYPE_FROM_CLASS (gobject_class),
 187                               G_SIGNAL_RUN_FIRST,
 188                               G_STRUCT_OFFSET (ModestFolderViewClass,
 189                                                folder_selection_changed),
 190                               NULL, NULL,
 191                               modest_marshal_VOID__POINTER_BOOLEAN,
 192                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 193 }
 194
 195
 196
 197 static void
 198 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 199                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 200 {
 201         GObject *rendobj;
 202         gchar *fname = NULL;
 203         gint unread;
 204         TnyFolderType type;
 205         TnyFolder *folder = NULL;
 206
 207         g_return_if_fail (column);
 208         g_return_if_fail (tree_model);
 209
 210         gtk_tree_model_get (tree_model, iter,
 211                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 212                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 213                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 214                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 215                             -1);
 216         rendobj = G_OBJECT(renderer);
 217
 218         if (!fname)
 219                 return;
 220
 221         if (folder && type != TNY_FOLDER_TYPE_ROOT) { /* FIXME: tnymail bug? crashes with root folders */
 222                 if (modest_tny_folder_is_local_folder (folder)) {
 223                         TnyFolderType type;
 224                         type = modest_tny_folder_get_local_folder_type (folder);
 225                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 226                                 g_free (fname);
 227                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 228                         }
 229                 }
 230         } else if (folder && type == TNY_FOLDER_TYPE_ROOT) {
 231                 /* FIXME: todo */
 232         }
 233
 234         if (unread > 0) {
 235                 gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 236                 g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 237                 g_free (folder_title);
 238         } else
 239                 g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 240
 241         g_free (fname);
 242         if (folder) g_object_unref (G_OBJECT (folder));
 243 }
 244
 245
 246 static GdkPixbuf*
 247 get_cached_icon (const gchar *name)
 248 {
 249         GError *err = NULL;
 250         gpointer pixbuf;
 251         gpointer orig_key;
 252         static GHashTable *icon_cache = NULL;
 253
 254         g_return_val_if_fail (name, NULL);
 255
 256         if (G_UNLIKELY(!icon_cache))
 257                 icon_cache = modest_cache_mgr_get_cache (modest_runtime_get_cache_mgr(),
 258                                                          MODEST_CACHE_MGR_CACHE_TYPE_PIXBUF);
 259
 260         if (!icon_cache || !g_hash_table_lookup_extended (icon_cache, name, &orig_key, &pixbuf)) {
 261
 262 #if MODEST_PLATFORM_ID==1  /* MODES_PLATFORM_ID: 1 ==> gnome, 2==> maemo */
 263                 pixbuf = (gpointer) gdk_pixbuf_new_from_file (name, &err);
 264 #else
 265                 GtkIconTheme *current_theme;
 266                 current_theme = gtk_icon_theme_get_default ();
 267                 pixbuf = gtk_icon_theme_load_icon (current_theme,
 268                                                    name,
 269                                                    26,
 270                                                    GTK_ICON_LOOKUP_NO_SVG,
 271                                                    NULL);
 272 #endif
 273
 274                 if (!pixbuf) {
 275                         g_printerr ("modest: error in icon factory while loading '%s': %s\n",
 276                                     name, err->message);
 277                         g_error_free (err);
 278                 }
 279                 /* if we cannot find it, we still insert (if we have a cache), so we get the error
 280                  * only once */
 281                 if (icon_cache)
 282                         g_hash_table_insert (icon_cache, g_strdup(name),(gpointer)pixbuf);
 283         }
 284         return GDK_PIXBUF(pixbuf);
 285 }
 286
 287
 288 static void
 289 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 290                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 291 {
 292         GObject *rendobj;
 293         GdkPixbuf *pixbuf;
 294         TnyFolderType type;
 295         gchar *fname = NULL;
 296         gint unread;
 297
 298         rendobj = G_OBJECT(renderer);
 299         gtk_tree_model_get (tree_model, iter,
 300                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 301                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 302                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 303                             -1);
 304         rendobj = G_OBJECT(renderer);
 305
 306         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 307                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 308         }
 309         g_free (fname);
 310
 311         switch (type) {
 312         case TNY_FOLDER_TYPE_ROOT:
 313                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_ACCOUNT);
 314                 break;
 315         case TNY_FOLDER_TYPE_INBOX:
 316                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_INBOX);
 317                 break;
 318         case TNY_FOLDER_TYPE_OUTBOX:
 319                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_OUTBOX);
 320                 break;
 321         case TNY_FOLDER_TYPE_JUNK:
 322                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_JUNK);
 323                 break;
 324         case TNY_FOLDER_TYPE_SENT:
 325                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_SENT);
 326                 break;
 327         case TNY_FOLDER_TYPE_TRASH:
 328                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_TRASH);
 329                 break;
 330         case TNY_FOLDER_TYPE_DRAFTS:
 331                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_DRAFTS);
 332                 break;
 333         case TNY_FOLDER_TYPE_NOTES:
 334                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NOTES);
 335                 break;
 336         case TNY_FOLDER_TYPE_CALENDAR:
 337                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CALENDAR);
 338                 break;
 339         case TNY_FOLDER_TYPE_CONTACTS:
 340                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CONTACTS);
 341                 break;
 342         case TNY_FOLDER_TYPE_NORMAL:
 343         default:
 344                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NORMAL);
 345                 break;
 346         }
 347         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 348 }
 349
 350 static void
 351 modest_folder_view_init (ModestFolderView *obj)
 352 {
 353         ModestFolderViewPrivate *priv;
 354         GtkTreeViewColumn *column;
 355         GtkCellRenderer *renderer;
 356         GtkTreeSelection *sel;
 357
 358         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 359
 360         priv->timer_expander = 0;
 361         priv->account_store  = NULL;
 362         priv->cur_folder     = NULL;
 363         priv->cur_row        = NULL;
 364         priv->query          = NULL;
 365
 366         column = gtk_tree_view_column_new ();
 367
 368         renderer = gtk_cell_renderer_pixbuf_new();
 369         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 370         gtk_tree_view_column_set_cell_data_func(column, renderer,
 371                                                 icon_cell_data, NULL, NULL);
 372
 373         renderer = gtk_cell_renderer_text_new();
 374         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 375         gtk_tree_view_column_set_cell_data_func(column, renderer,
 376                                                 text_cell_data, NULL, NULL);
 377
 378         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 379         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 380
 381         gtk_tree_view_column_set_spacing (column, 2);
 382         gtk_tree_view_column_set_resizable (column, TRUE);
 383         gtk_tree_view_column_set_fixed_width (column, TRUE);
 384         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(obj), FALSE);
 385         gtk_tree_view_set_enable_search     (GTK_TREE_VIEW(obj), FALSE);
 386
 387         gtk_tree_view_append_column (GTK_TREE_VIEW(obj),column);
 388
 389         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 390 }
 391
 392 static void
 393 tny_account_store_view_init (gpointer g, gpointer iface_data)
 394 {
 395         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 396
 397         klass->set_account_store_func = modest_folder_view_set_account_store;
 398
 399         return;
 400 }
 401
 402 static void
 403 modest_folder_view_finalize (GObject *obj)
 404 {
 405         ModestFolderViewPrivate *priv;
 406         GtkTreeSelection    *sel;
 407
 408         g_return_if_fail (obj);
 409
 410         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 411
 412         if (priv->timer_expander != 0) {
 413                 g_source_remove (priv->timer_expander);
 414                 priv->timer_expander = 0;
 415         }
 416
 417         if (priv->account_store) {
 418                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 419                                              priv->account_update_signal);
 420                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 421                                              priv->accounts_reloaded_signal);
 422                 g_object_unref (G_OBJECT(priv->account_store));
 423                 priv->account_store = NULL;
 424         }
 425
 426         if (priv->query) {
 427                 g_object_unref (G_OBJECT (priv->query));
 428                 priv->query = NULL;
 429         }
 430
 431         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 432         if (sel)
 433                 g_signal_handler_disconnect (G_OBJECT(sel), priv->changed_signal);
 434
 435         G_OBJECT_CLASS(parent_class)->finalize (obj);
 436 }
 437
 438
 439 static void
 440 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 441 {
 442         ModestFolderViewPrivate *priv;
 443         TnyDevice *device;
 444
 445         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 446         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 447
 448         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 449         device = tny_account_store_get_device (account_store);
 450
 451         if (G_UNLIKELY (priv->account_store)) {
 452
 453                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 454                                                    priv->account_update_signal))
 455                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 456                                                      priv->account_update_signal);
 457                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 458                                                    priv->accounts_reloaded_signal))
 459                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 460                                                      priv->accounts_reloaded_signal);
 461
 462                 g_object_unref (G_OBJECT (priv->account_store));
 463         }
 464
 465         priv->account_store = g_object_ref (G_OBJECT (account_store));
 466
 467         priv->account_update_signal =
 468                 g_signal_connect (G_OBJECT(account_store), "account_update",
 469                                   G_CALLBACK (on_account_update), self);
 470
 471         priv->accounts_reloaded_signal =
 472                 g_signal_connect (G_OBJECT(account_store), "accounts_reloaded",
 473                                   G_CALLBACK (on_accounts_reloaded), self);
 474
 475         if (!update_model (MODEST_FOLDER_VIEW (self),
 476                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 477                 g_printerr ("modest: failed to update model\n");
 478
 479         g_object_unref (G_OBJECT (device));
 480 }
 481
 482 static void
 483 on_account_update (TnyAccountStore *account_store, const gchar *account,
 484                    gpointer user_data)
 485 {
 486         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 487                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 488                 g_printerr ("modest: failed to update model for changes in '%s'",
 489                             account);
 490 }
 491
 492 static void
 493 on_accounts_reloaded   (TnyAccountStore *account_store,
 494                         gpointer user_data)
 495 {
 496         update_model (MODEST_FOLDER_VIEW (user_data),
 497                       MODEST_TNY_ACCOUNT_STORE(account_store));
 498 }
 499
 500 void
 501 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 502 {
 503         GtkTreeViewColumn *col;
 504
 505         g_return_if_fail (self);
 506
 507         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 508         if (!col) {
 509                 g_printerr ("modest: failed get column for title\n");
 510                 return;
 511         }
 512
 513         gtk_tree_view_column_set_title (col, title);
 514         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 515                                            title != NULL);
 516 }
 517
 518 GtkWidget*
 519 modest_folder_view_new (TnyFolderStoreQuery *query)
 520 {
 521         GObject *self;
 522         ModestFolderViewPrivate *priv;
 523         GtkTreeSelection *sel;
 524
 525         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 526         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 527
 528         priv->query = g_object_ref (query);
 529
 530         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 531         priv->changed_signal = g_signal_connect (sel, "changed",
 532                                                  G_CALLBACK (on_selection_changed), self);
 533         return GTK_WIDGET(self);
 534 }
 535
 536 /* this feels dirty; any other way to expand all the root items? */
 537 static void
 538 expand_root_items (ModestFolderView *self)
 539 {
 540         GtkTreePath *path;
 541         path = gtk_tree_path_new_first ();
 542
 543         /* all folders should have child items, so.. */
 544         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 545                 gtk_tree_path_next (path);
 546
 547         gtk_tree_path_free (path);
 548 }
 549
 550 static gboolean
 551 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 552 {
 553         ModestFolderViewPrivate *priv;
 554
 555         TnyList          *account_list;
 556         GtkTreeModel     *model, *sortable;
 557
 558         g_return_val_if_fail (account_store, FALSE);
 559
 560         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 561
 562         /* Notify that there is no folder selected*/
 563         g_signal_emit (G_OBJECT(self),
 564                        signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 565                        NULL, TRUE);
 566
 567         /* FIXME: the local accounts are not shown when the query
 568            selects only the subscribed folders. */
 569 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 570         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 571         account_list = TNY_LIST(model);
 572
 573         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 574                                         account_list,
 575                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 576         if (account_list) {
 577                 sortable = gtk_tree_model_sort_new_with_model (model);
 578                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 579                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 580                                                       GTK_SORT_ASCENDING);
 581                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 582                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 583                                                  cmp_rows, NULL, NULL);
 584
 585                 /* Set new model */
 586                 gtk_tree_view_set_model (GTK_TREE_VIEW(self), sortable);
 587                 expand_root_items (self); /* expand all account folders */
 588                 g_object_unref (account_list);
 589         }
 590
 591         return TRUE;
 592 }
 593
 594
 595 static void
 596 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 597 {
 598         GtkTreeModel            *model_sort, *model;
 599         TnyFolder               *folder = NULL;
 600         GtkTreeIter             iter, iter_sort;
 601         GtkTreePath            *path;
 602         ModestFolderView        *tree_view;
 603         ModestFolderViewPrivate *priv;
 604         gint                    type;
 605
 606         g_return_if_fail (sel);
 607         g_return_if_fail (user_data);
 608
 609         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 610         priv->cur_selection = sel;
 611
 612         /* folder was _un_selected if true */
 613         if (!gtk_tree_selection_get_selected (sel, &model_sort, &iter_sort)) {
 614                 if (priv->cur_folder)
 615                         g_object_unref (priv->cur_folder);
 616                 if (priv->cur_row)
 617                         gtk_tree_row_reference_free (priv->cur_row);
 618                 priv->cur_folder = NULL;
 619                 priv->cur_row = NULL;
 620                 return;
 621         }
 622
 623         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 624         gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort),
 625                                                         &iter,
 626                                                         &iter_sort);
 627
 628         tree_view = MODEST_FOLDER_VIEW (user_data);
 629
 630         gtk_tree_model_get (model, &iter,
 631                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 632                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 633                             -1);
 634
 635         /* If the folder is the same or is a root folder do not notify */
 636         if ((type == TNY_FOLDER_TYPE_ROOT) || (priv->cur_folder == folder)) {
 637                 g_object_unref (folder);
 638                 return;
 639         }
 640
 641         /* Current folder was unselected */
 642         if (priv->cur_folder) {
 643                 g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 644                                priv->cur_folder, FALSE);
 645                 g_object_unref (priv->cur_folder);
 646         }
 647
 648         if (priv->cur_row)
 649                 gtk_tree_row_reference_free (priv->cur_row);
 650
 651         /* New current references */
 652         path = gtk_tree_model_get_path (model_sort, &iter_sort);
 653         priv->cur_folder = folder;
 654         priv->cur_row = gtk_tree_row_reference_new (model_sort, path);
 655
 656         /* Frees */
 657         gtk_tree_path_free (path);
 658
 659         /* New folder has been selected */
 660         g_signal_emit (G_OBJECT(tree_view),
 661                        signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 662                        0, folder, TRUE);
 663 }
 664
 665 TnyFolder *
 666 modest_folder_view_get_selected (ModestFolderView *self)
 667 {
 668         ModestFolderViewPrivate *priv;
 669
 670         g_return_val_if_fail (self, NULL);
 671
 672         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 673         if (priv->cur_folder)
 674                 g_object_ref (priv->cur_folder);
 675
 676         return priv->cur_folder;
 677 }
 678
 679 static gint
 680 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 681           gpointer user_data)
 682 {
 683         gint cmp;
 684         gchar         *name1, *name2;
 685         TnyFolderType type;
 686         TnyFolder     *folder1, *folder2;
 687
 688         gtk_tree_model_get (tree_model, iter1,
 689                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 690                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 691                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 692                             -1);
 693         gtk_tree_model_get (tree_model, iter2,
 694                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 695                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 696                             -1);
 697
 698         /* local_folders should be the last one */
 699         if (type == TNY_FOLDER_TYPE_ROOT) {
 700                 /* the account name is also the name of the root folder
 701                  * in case of local folders */
 702                 if (name1 && strcmp (name1, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 703                         cmp = +1;
 704                 else if (name2 && strcmp (name2, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 705                         cmp = -1;
 706                 else
 707                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 708         } else
 709                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 710
 711
 712         if (folder1)
 713                 g_object_unref(G_OBJECT(folder1));
 714         if (folder2)
 715                 g_object_unref(G_OBJECT(folder2));
 716
 717         g_free (name1);
 718         g_free (name2);
 719
 720         return cmp;
 721 }
 722
 723 /*****************************************************************************/
 724 /*                        DRAG and DROP stuff                                */
 725 /*****************************************************************************/
 726
 727 /*
 728  * This function fills the #GtkSelectionData with the row and the
 729  * model that has been dragged. It's called when this widget is a
 730  * source for dnd after the event drop happened
 731  */
 732 static void
 733 on_drag_data_get (GtkWidget *widget,
 734                   GdkDragContext *context,
 735                   GtkSelectionData *selection_data,
 736                   guint info,
 737                   guint time,
 738                   gpointer data)
 739 {
 740         GtkTreeSelection *selection;
 741         GtkTreeModel *model_sort, *model;
 742         GtkTreeIter iter;
 743         GtkTreePath *source_row_sort;
 744         GtkTreePath *source_row;
 745
 746         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 747         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 748         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 749
 750         /* Get the unsorted path and model */
 751         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 752         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 753                                                                      source_row_sort);
 754
 755         gtk_tree_set_row_drag_data (selection_data,
 756                                     model,
 757                                     source_row);
 758
 759         gtk_tree_path_free (source_row_sort);
 760         gtk_tree_path_free (source_row);
 761 }
 762
 763 typedef struct _DndHelper {
 764         gboolean delete_source;
 765         GtkTreePath *source_row;
 766         GdkDragContext *context;
 767         guint time;
 768 } DndHelper;
 769
 770
 771 /*
 772  * This function is the callback of the
 773  * modest_mail_operation_xfer_msg() call. We check here if the message
 774  * was correctly asynchronously transfered
 775  */
 776 static void
 777 on_progress_changed (ModestMailOperation *mail_op, gpointer user_data)
 778 {
 779         ModestMailOperationQueue *queue;
 780         gboolean success = FALSE;
 781         DndHelper *helper;
 782
 783         helper = (DndHelper *) user_data;
 784
 785         if (modest_mail_operation_get_status (mail_op) ==
 786             MODEST_MAIL_OPERATION_STATUS_SUCCESS) {
 787                 success = TRUE;
 788         } else {
 789                 const GError *error;
 790                 error = modest_mail_operation_get_error (mail_op);
 791                 g_warning ("Error transferring messages: %s\n", error->message);
 792         }
 793
 794         /* Remove the mail operation */
 795         queue = modest_runtime_get_mail_operation_queue ();
 796         modest_mail_operation_queue_remove (queue, mail_op);
 797         g_object_unref (G_OBJECT (mail_op));
 798
 799         /* Notify the drag source. Never call delete, the monitor will
 800            do the job if needed */
 801         gtk_drag_finish (helper->context, success, FALSE, helper->time);
 802
 803         /* Free the helper */
 804         gtk_tree_path_free (helper->source_row);
 805         g_slice_free (DndHelper, helper);
 806 }
 807
 808 /*
 809  * This function is used by drag_data_received_cb to manage drag and
 810  * drop of a header, i.e, and drag from the header view to the folder
 811  * view.
 812  */
 813 static void
 814 drag_and_drop_from_header_view (GtkTreeModel *source_model,
 815                                 GtkTreeModel *dest_model,
 816                                 GtkTreePath  *dest_row,
 817                                 DndHelper    *helper)
 818 {
 819         TnyHeader *header;
 820         TnyFolder *folder;
 821         ModestMailOperationQueue *queue;
 822         ModestMailOperation *mail_op;
 823         gboolean started;
 824         GtkTreeIter source_iter, dest_iter;
 825
 826         /* Get header */
 827         gtk_tree_model_get_iter (source_model, &source_iter, helper->source_row);
 828         gtk_tree_model_get (source_model, &source_iter,
 829                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 830                             &header, -1);
 831
 832         /* Get Folder */
 833         gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
 834         gtk_tree_model_get (dest_model, &dest_iter,
 835                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 836                             &folder, -1);
 837
 838         /* Transfer message */
 839         queue = modest_runtime_get_mail_operation_queue ();
 840         mail_op = modest_mail_operation_new ();
 841         started = modest_mail_operation_xfer_msg (mail_op, header,
 842                                                   folder, helper->delete_source);
 843         if (started) {
 844                 g_signal_connect (G_OBJECT (mail_op), "progress_changed",
 845                                   G_CALLBACK (on_progress_changed), helper);
 846                 modest_mail_operation_queue_add (queue, mail_op);
 847         } else {
 848                 const GError *error;
 849                 error = modest_mail_operation_get_error (mail_op);
 850                 if (error)
 851                         g_warning ("Error trying to transfer messages: %s\n",
 852                                    error->message);
 853
 854                 g_slice_free (DndHelper, helper);
 855         }
 856
 857         /* Frees */
 858         g_object_unref (G_OBJECT (mail_op));
 859         g_object_unref (G_OBJECT (header));
 860         g_object_unref (G_OBJECT (folder));
 861 }
 862
 863 /*
 864  * This function is used by drag_data_received_cb to manage drag and
 865  * drop of a folder, i.e, and drag from the folder view to the same
 866  * folder view.
 867  */
 868 static void
 869 drag_and_drop_from_folder_view (GtkTreeModel     *source_model,
 870                                 GtkTreeModel     *dest_model,
 871                                 GtkTreePath      *dest_row,
 872                                 GtkSelectionData *selection_data,
 873                                 DndHelper        *helper)
 874 {
 875         ModestMailOperation *mail_op;
 876         const GError *error;
 877         GtkTreeIter parent_iter, iter;
 878         TnyFolder *folder;
 879         TnyFolderStore *parent_folder;
 880         gboolean success = FALSE;
 881
 882         /* Check if the drag is possible */
 883         if (!gtk_tree_path_compare (helper->source_row, dest_row))
 884                 goto out;
 885
 886         if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
 887                                                    dest_row,
 888                                                    selection_data))
 889                 goto out;
 890
 891         /* Get data */
 892         gtk_tree_model_get_iter (source_model, &parent_iter, dest_row);
 893         gtk_tree_model_get_iter (source_model, &iter, helper->source_row);
 894         gtk_tree_model_get (source_model, &parent_iter,
 895                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 896                             &parent_folder, -1);
 897         gtk_tree_model_get (source_model, &iter,
 898                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 899                             &folder, -1);
 900
 901         /* Do the mail operation */
 902         mail_op = modest_mail_operation_new ();
 903         modest_mail_operation_xfer_folder (mail_op, folder, parent_folder,
 904                                            helper->delete_source);
 905
 906         g_object_unref (G_OBJECT (parent_folder));
 907         g_object_unref (G_OBJECT (folder));
 908
 909         error = modest_mail_operation_get_error (mail_op);
 910         if (error) {
 911                 g_warning ("Error transferring folder: %s\n", error->message);
 912                 g_object_unref (G_OBJECT (mail_op));
 913                 goto out;
 914         }
 915         g_object_unref (G_OBJECT (mail_op));
 916         success = TRUE;
 917  out:
 918         gtk_drag_finish (helper->context, success, FALSE, helper->time);
 919
 920         /* Free the helper */
 921         gtk_tree_path_free (helper->source_row);
 922         g_slice_free (DndHelper, helper);
 923 }
 924
 925 /*
 926  * This function receives the data set by the "drag-data-get" signal
 927  * handler. This information comes within the #GtkSelectionData. This
 928  * function will manage both the drags of folders of the treeview and
 929  * drags of headers of the header view widget.
 930  */
 931 static void
 932 on_drag_data_received (GtkWidget *widget,
 933                        GdkDragContext *context,
 934                        gint x,
 935                        gint y,
 936                        GtkSelectionData *selection_data,
 937                        guint target_type,
 938                        guint time,
 939                        gpointer data)
 940 {
 941         GtkWidget *source_widget;
 942         GtkTreeModel *model_sort, *dest_model, *source_model;
 943         GtkTreePath *source_row, *dest_row, *child_dest_row;
 944         GtkTreeViewDropPosition pos;
 945         gboolean success = FALSE, delete_source = FALSE;
 946         DndHelper *helper;
 947
 948         /* Do not allow further process */
 949         g_signal_stop_emission_by_name (widget, "drag-data-received");
 950
 951         /* Get the action */
 952         if (context->action == GDK_ACTION_MOVE)
 953                 delete_source = TRUE;
 954
 955         /* Check if the get_data failed */
 956         if (selection_data == NULL || selection_data->length < 0)
 957                 gtk_drag_finish (context, success, FALSE, time);
 958
 959         /* Get the models */
 960         source_widget = gtk_drag_get_source_widget (context);
 961         gtk_tree_get_row_drag_data (selection_data,
 962                                     &source_model,
 963                                     &source_row);
 964
 965         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
 966         /* Select the destination model */
 967         if (source_widget == widget) {
 968                 dest_model = source_model;
 969         } else {
 970                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 971         }
 972
 973         /* Get the path to the destination row. Can not call
 974            gtk_tree_view_get_drag_dest_row() because the source row
 975            is not selected anymore */
 976         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), x, y,
 977                                            &dest_row, &pos);
 978
 979         /* Only allow drops IN other rows */
 980         if (!dest_row || pos == GTK_TREE_VIEW_DROP_BEFORE || pos == GTK_TREE_VIEW_DROP_AFTER)
 981                 gtk_drag_finish (context, success, FALSE, time);
 982
 983         /* Create the helper */
 984         helper = g_slice_new0 (DndHelper);
 985         helper->delete_source = delete_source;
 986         helper->source_row = gtk_tree_path_copy (source_row);
 987         helper->context = context;
 988         helper->time = time;
 989
 990         /* Get path from the unsorted model */
 991         child_dest_row =
 992                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 993                                                                 dest_row);
 994         gtk_tree_path_free (dest_row);
 995
 996         /* Drags from the header view */
 997         if (source_widget != widget) {
 998
 999                 drag_and_drop_from_header_view (source_model,
1000                                                 dest_model,
1001                                                 child_dest_row,
1002                                                 helper);
1003         } else {
1004
1005
1006                 drag_and_drop_from_folder_view (source_model,
1007                                                 dest_model,
1008                                                 child_dest_row,
1009                                                 selection_data,
1010                                                 helper);
1011         }
1012
1013         /* Frees */
1014         gtk_tree_path_free (source_row);
1015         gtk_tree_path_free (child_dest_row);
1016 }
1017
1018 /*
1019  * We define a "drag-drop" signal handler because we do not want to
1020  * use the default one, because the default one always calls
1021  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1022  * signal handler, because there we have all the information available
1023  * to know if the dnd was a success or not.
1024  */
1025 static gboolean
1026 drag_drop_cb (GtkWidget      *widget,
1027               GdkDragContext *context,
1028               gint            x,
1029               gint            y,
1030               guint           time,
1031               gpointer        user_data)
1032 {
1033         gpointer target;
1034
1035         if (!context->targets)
1036                 return FALSE;
1037
1038         /* Check if we're dragging a folder row */
1039         target = gtk_drag_dest_find_target (widget, context, NULL);
1040
1041         /* Request the data from the source. */
1042         gtk_drag_get_data(widget, context, target, time);
1043
1044     return TRUE;
1045 }
1046
1047 /*
1048  * This function expands a node of a tree view if it's not expanded
1049  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1050  * does that, so that's why they're here.
1051  */
1052 static gint
1053 expand_row_timeout (gpointer data)
1054 {
1055         GtkTreeView *tree_view = data;
1056         GtkTreePath *dest_path = NULL;
1057         GtkTreeViewDropPosition pos;
1058         gboolean result = FALSE;
1059
1060         GDK_THREADS_ENTER ();
1061
1062         gtk_tree_view_get_drag_dest_row (tree_view,
1063                                          &dest_path,
1064                                          &pos);
1065
1066         if (dest_path &&
1067             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1068              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1069                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1070                 gtk_tree_path_free (dest_path);
1071         }
1072         else {
1073                 if (dest_path)
1074                         gtk_tree_path_free (dest_path);
1075
1076                 result = TRUE;
1077         }
1078
1079         GDK_THREADS_LEAVE ();
1080
1081         return result;
1082 }
1083
1084 /*
1085  * This function is called whenever the pointer is moved over a widget
1086  * while dragging some data. It installs a timeout that will expand a
1087  * node of the treeview if not expanded yet. This function also calls
1088  * gdk_drag_status in order to set the suggested action that will be
1089  * used by the "drag-data-received" signal handler to know if we
1090  * should do a move or just a copy of the data.
1091  */
1092 static gboolean
1093 on_drag_motion (GtkWidget      *widget,
1094                 GdkDragContext *context,
1095                 gint            x,
1096                 gint            y,
1097                 guint           time,
1098                 gpointer        user_data)
1099 {
1100         GtkTreeViewDropPosition pos;
1101         GtkTreePath *dest_row;
1102         ModestFolderViewPrivate *priv;
1103         GdkDragAction suggested_action;
1104         gboolean valid_location = FALSE;
1105
1106         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1107
1108         if (priv->timer_expander != 0) {
1109                 g_source_remove (priv->timer_expander);
1110                 priv->timer_expander = 0;
1111         }
1112
1113         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1114                                            x, y,
1115                                            &dest_row,
1116                                            &pos);
1117
1118         /* Do not allow drops between folders */
1119         if (!dest_row ||
1120             pos == GTK_TREE_VIEW_DROP_BEFORE ||
1121             pos == GTK_TREE_VIEW_DROP_AFTER) {
1122                 gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), NULL, 0);
1123                 gdk_drag_status(context, 0, time);
1124                 valid_location = FALSE;
1125                 goto out;
1126         } else {
1127                 valid_location = TRUE;
1128         }
1129
1130         /* Expand the selected row after 1/2 second */
1131         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1132                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1133                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1134         }
1135         gtk_tree_path_free (dest_row);
1136
1137         /* Select the desired action. By default we pick MOVE */
1138         suggested_action = GDK_ACTION_MOVE;
1139
1140         if (context->actions == GDK_ACTION_COPY)
1141             gdk_drag_status(context, GDK_ACTION_COPY, time);
1142         else if (context->actions == GDK_ACTION_MOVE)
1143             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1144         else if (context->actions & suggested_action)
1145             gdk_drag_status(context, suggested_action, time);
1146         else
1147             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1148
1149  out:
1150         g_signal_stop_emission_by_name (widget, "drag-motion");
1151         return valid_location;
1152 }
1153
1154
1155 /* Folder view drag types */
1156 const GtkTargetEntry folder_view_drag_types[] =
1157 {
1158         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, MODEST_FOLDER_ROW },
1159         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP,    MODEST_HEADER_ROW }
1160 };
1161
1162 /*
1163  * This function sets the treeview as a source and a target for dnd
1164  * events. It also connects all the requirede signals.
1165  */
1166 static void
1167 setup_drag_and_drop (GtkTreeView *self)
1168 {
1169         /* Set up the folder view as a dnd destination. Set only the
1170            highlight flag, otherwise gtk will have a different
1171            behaviour */
1172         gtk_drag_dest_set (GTK_WIDGET (self),
1173                            GTK_DEST_DEFAULT_HIGHLIGHT,
1174                            folder_view_drag_types,
1175                            G_N_ELEMENTS (folder_view_drag_types),
1176                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1177
1178         g_signal_connect (G_OBJECT (self),
1179                           "drag_data_received",
1180                           G_CALLBACK (on_drag_data_received),
1181                           NULL);
1182
1183
1184         /* Set up the treeview as a dnd source */
1185         gtk_drag_source_set (GTK_WIDGET (self),
1186                              GDK_BUTTON1_MASK,
1187                              folder_view_drag_types,
1188                              G_N_ELEMENTS (folder_view_drag_types),
1189                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1190
1191         g_signal_connect (G_OBJECT (self),
1192                           "drag_motion",
1193                           G_CALLBACK (on_drag_motion),
1194                           NULL);
1195
1196         g_signal_connect (G_OBJECT (self),
1197                           "drag_data_get",
1198                           G_CALLBACK (on_drag_data_get),
1199                           NULL);
1200
1201         g_signal_connect (G_OBJECT (self),
1202                           "drag_drop",
1203                           G_CALLBACK (drag_drop_cb),
1204                           NULL);
1205 }