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-folder-monitor.h>
  39 #include <tny-account-store.h>
  40 #include <tny-account.h>
  41 #include <tny-folder.h>
  42 #include <tny-camel-folder.h>
  43 #include <tny-simple-list.h>
  44 #include <modest-tny-folder.h>
  45 #include <modest-marshal.h>
  46 #include <modest-icon-names.h>
  47 #include <modest-tny-account-store.h>
  48 #include <modest-text-utils.h>
  49 #include <modest-runtime.h>
  50 #include "modest-folder-view.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 gboolean     update_model_empty     (ModestFolderView *self);
  67
  68 static void         on_selection_changed   (GtkTreeSelection *sel, gpointer data);
  69
  70 static void         on_account_update      (TnyAccountStore *account_store,
  71                                             const gchar *account,
  72                                             gpointer user_data);
  73
  74 static gint         cmp_rows               (GtkTreeModel *tree_model,
  75                                             GtkTreeIter *iter1,
  76                                             GtkTreeIter *iter2,
  77                                             gpointer user_data);
  78
  79 /* DnD functions */
  80 static void         on_drag_data_get       (GtkWidget *widget,
  81                                             GdkDragContext *context,
  82                                             GtkSelectionData *selection_data,
  83                                             guint info,
  84                                             guint time,
  85                                             gpointer data);
  86
  87 static void         on_drag_data_received  (GtkWidget *widget,
  88                                             GdkDragContext *context,
  89                                             gint x,
  90                                             gint y,
  91                                             GtkSelectionData *selection_data,
  92                                             guint info,
  93                                             guint time,
  94                                             gpointer data);
  95
  96 static gboolean     on_drag_motion         (GtkWidget      *widget,
  97                                             GdkDragContext *context,
  98                                             gint            x,
  99                                             gint            y,
 100                                             guint           time,
 101                                             gpointer        user_data);
 102
 103 static gint         expand_row_timeout     (gpointer data);
 104
 105 static void         setup_drag_and_drop    (GtkTreeView *self);
 106
 107 enum {
 108         TARGET_TREE_ROW,
 109 };
 110
 111 static const GtkTargetEntry drag_types[] =
 112 {
 113         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, TARGET_TREE_ROW },
 114 };
 115
 116 #define ROW_REF_DATA_NAME "row-ref"
 117
 118 enum {
 119         FOLDER_SELECTION_CHANGED_SIGNAL,
 120         FOLDER_MOVED_SIGNAL,
 121         LAST_SIGNAL
 122 };
 123
 124 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 125 struct _ModestFolderViewPrivate {
 126         TnyAccountStore     *account_store;
 127         TnyFolder           *cur_folder;
 128         GtkTreeRowReference *cur_row;
 129
 130         gulong               sig1, sig2;
 131         GMutex              *lock;
 132
 133         GtkTreeSelection    *cur_selection;
 134         TnyFolderStoreQuery *query;
 135         guint                timer_expander;
 136
 137         TnyFolderMonitor    *monitor;
 138 };
 139 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 140         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 141                                      MODEST_TYPE_FOLDER_VIEW,   \
 142                                      ModestFolderViewPrivate))
 143 /* globals */
 144 static GObjectClass *parent_class = NULL;
 145
 146 static guint signals[LAST_SIGNAL] = {0};
 147
 148 GType
 149 modest_folder_view_get_type (void)
 150 {
 151         static GType my_type = 0;
 152         if (!my_type) {
 153                 static const GTypeInfo my_info = {
 154                         sizeof(ModestFolderViewClass),
 155                         NULL,           /* base init */
 156                         NULL,           /* base finalize */
 157                         (GClassInitFunc) modest_folder_view_class_init,
 158                         NULL,           /* class finalize */
 159                         NULL,           /* class data */
 160                         sizeof(ModestFolderView),
 161                         1,              /* n_preallocs */
 162                         (GInstanceInitFunc) modest_folder_view_init,
 163                         NULL
 164                 };
 165
 166                 static const GInterfaceInfo tny_account_store_view_info = {
 167                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 168                         NULL,         /* interface_finalize */
 169                         NULL          /* interface_data */
 170                 };
 171
 172
 173                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 174                                                   "ModestFolderView",
 175                                                   &my_info, 0);
 176
 177                 g_type_add_interface_static (my_type,
 178                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 179                                              &tny_account_store_view_info);
 180         }
 181         return my_type;
 182 }
 183
 184 static void
 185 modest_folder_view_class_init (ModestFolderViewClass *klass)
 186 {
 187         GObjectClass *gobject_class;
 188         gobject_class = (GObjectClass*) klass;
 189
 190         parent_class            = g_type_class_peek_parent (klass);
 191         gobject_class->finalize = modest_folder_view_finalize;
 192
 193         klass->update_model = modest_folder_view_update_model;
 194
 195         g_type_class_add_private (gobject_class,
 196                                   sizeof(ModestFolderViewPrivate));
 197
 198         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 199                 g_signal_new ("folder_selection_changed",
 200                               G_TYPE_FROM_CLASS (gobject_class),
 201                               G_SIGNAL_RUN_FIRST,
 202                               G_STRUCT_OFFSET (ModestFolderViewClass,
 203                                                folder_selection_changed),
 204                               NULL, NULL,
 205                               modest_marshal_VOID__POINTER_BOOLEAN,
 206                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 207
 208         /**
 209          * ModestFolderView::folder-moved
 210          * @self: the #MailOperation that emits the signal
 211          * @folder: the #TnyFolder that is going to be moved
 212          * @parent: then #TnyFolderStore that is going to be the new parent
 213          * @done: indicates if the folder move was correctly completed or not
 214          * @user_data: user data set when the signal handler was connected
 215          *
 216          * Emitted when a the user wants to move a folder through a
 217          * drag and drop action
 218          */
 219         signals[FOLDER_MOVED_SIGNAL] =
 220                 g_signal_new ("folder_moved",
 221                               G_TYPE_FROM_CLASS (gobject_class),
 222                               G_SIGNAL_RUN_FIRST,
 223                               G_STRUCT_OFFSET (ModestFolderViewClass, folder_moved),
 224                               NULL, NULL,
 225                               modest_marshal_VOID__POINTER_POINTER_POINTER,
 226                               G_TYPE_NONE, 3, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER);
 227 }
 228
 229
 230
 231 static void
 232 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 233                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 234 {
 235         GObject *rendobj;
 236         gchar *fname;
 237         gint unread;
 238         TnyFolderType type;
 239         TnyFolder *folder;
 240
 241         g_return_if_fail (column);
 242         g_return_if_fail (tree_model);
 243
 244         gtk_tree_model_get (tree_model, iter,
 245                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 246                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 247                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 248                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 249                             -1);
 250         rendobj = G_OBJECT(renderer);
 251
 252         if (!fname)
 253                 return;
 254
 255         if (folder && type != TNY_FOLDER_TYPE_ROOT) { /* FIXME: tnymail bug? crashes with root folders */
 256                 if (modest_tny_folder_is_local_folder (folder)) {
 257                         TnyFolderType type;
 258                         type = modest_tny_folder_get_local_folder_type (folder);
 259                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 260                                 g_free (fname);
 261                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 262                         }
 263                 }
 264         } else if (folder && type == TNY_FOLDER_TYPE_ROOT) {
 265                 if (strcmp (fname, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0) {/* FIXME: hack */
 266                         g_free (fname);
 267                         fname = g_strdup (MODEST_LOCAL_FOLDERS_DISPLAY_NAME);
 268                 }
 269         }
 270
 271         if (unread > 0) {
 272                 gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 273                 g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 274                 g_free (folder_title);
 275         } else
 276                 g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 277
 278         g_free (fname);
 279 }
 280
 281
 282 static GdkPixbuf*
 283 get_cached_icon (const gchar *name)
 284 {
 285         GError *err = NULL;
 286         gpointer pixbuf;
 287         gpointer orig_key;
 288         static GHashTable *icon_cache = NULL;
 289
 290         g_return_val_if_fail (name, NULL);
 291
 292         if (G_UNLIKELY(!icon_cache))
 293                 icon_cache = modest_cache_mgr_get_cache (modest_runtime_get_cache_mgr(),
 294                                                          MODEST_CACHE_MGR_CACHE_TYPE_PIXBUF);
 295
 296         if (!icon_cache || !g_hash_table_lookup_extended (icon_cache, name, &orig_key, &pixbuf)) {
 297                 pixbuf = (gpointer)gdk_pixbuf_new_from_file (name, &err);
 298                 if (!pixbuf) {
 299                         g_printerr ("modest: error in icon factory while loading '%s': %s\n",
 300                                     name, err->message);
 301                         g_error_free (err);
 302                 }
 303                 /* if we cannot find it, we still insert (if we have a cache), so we get the error
 304                  * only once */
 305                 if (icon_cache)
 306                         g_hash_table_insert (icon_cache, g_strdup(name),(gpointer)pixbuf);
 307         }
 308         return GDK_PIXBUF(pixbuf);
 309 }
 310
 311
 312 static void
 313 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 314                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 315 {
 316         GObject *rendobj;
 317         GdkPixbuf *pixbuf;
 318         TnyFolderType type;
 319         gchar *fname = NULL;
 320         gint unread;
 321
 322         rendobj = G_OBJECT(renderer);
 323         gtk_tree_model_get (tree_model, iter,
 324                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 325                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 326                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread, -1);
 327         rendobj = G_OBJECT(renderer);
 328
 329         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 330                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 331         }
 332         g_free (fname);
 333
 334         switch (type) {
 335         case TNY_FOLDER_TYPE_ROOT:
 336                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_ACCOUNT);
 337                 break;
 338         case TNY_FOLDER_TYPE_INBOX:
 339                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_INBOX);
 340                 break;
 341         case TNY_FOLDER_TYPE_OUTBOX:
 342                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_OUTBOX);
 343                 break;
 344         case TNY_FOLDER_TYPE_JUNK:
 345                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_JUNK);
 346                 break;
 347         case TNY_FOLDER_TYPE_SENT:
 348                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_SENT);
 349                 break;
 350         case TNY_FOLDER_TYPE_TRASH:
 351                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_TRASH);
 352                 break;
 353         case TNY_FOLDER_TYPE_DRAFTS:
 354                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_DRAFTS);
 355                 break;
 356         case TNY_FOLDER_TYPE_NOTES:
 357                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NOTES);
 358                 break;
 359         case TNY_FOLDER_TYPE_CALENDAR:
 360                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CALENDAR);
 361                 break;
 362         case TNY_FOLDER_TYPE_CONTACTS:
 363                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CONTACTS);
 364                 break;
 365         case TNY_FOLDER_TYPE_NORMAL:
 366         default:
 367                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NORMAL);
 368                 break;
 369         }
 370         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 371 }
 372
 373 static void
 374 modest_folder_view_init (ModestFolderView *obj)
 375 {
 376         ModestFolderViewPrivate *priv;
 377         GtkTreeViewColumn *column;
 378         GtkCellRenderer *renderer;
 379         GtkTreeSelection *sel;
 380
 381         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 382
 383         priv->timer_expander = 0;
 384         priv->account_store  = NULL;
 385         priv->cur_folder     = NULL;
 386         priv->cur_row        = NULL;
 387         priv->query          = NULL;
 388         priv->monitor        = NULL;
 389
 390         priv->lock           = g_mutex_new ();
 391
 392         column = gtk_tree_view_column_new ();
 393         gtk_tree_view_append_column (GTK_TREE_VIEW(obj),column);
 394
 395         renderer = gtk_cell_renderer_pixbuf_new();
 396         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 397         gtk_tree_view_column_set_cell_data_func(column, renderer,
 398                                                 icon_cell_data, NULL, NULL);
 399
 400         renderer = gtk_cell_renderer_text_new();
 401         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 402         gtk_tree_view_column_set_cell_data_func(column, renderer,
 403                                                 text_cell_data, NULL, NULL);
 404
 405         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 406         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 407
 408         gtk_tree_view_column_set_spacing (column, 2);
 409         gtk_tree_view_column_set_resizable (column, TRUE);
 410         gtk_tree_view_column_set_fixed_width (column, TRUE);
 411         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(obj), FALSE);
 412         gtk_tree_view_set_enable_search     (GTK_TREE_VIEW(obj), FALSE);
 413
 414         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 415 }
 416
 417 static void
 418 tny_account_store_view_init (gpointer g, gpointer iface_data)
 419 {
 420         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 421
 422         klass->set_account_store_func = modest_folder_view_set_account_store;
 423
 424         return;
 425 }
 426
 427 static void
 428 modest_folder_view_finalize (GObject *obj)
 429 {
 430         ModestFolderViewPrivate *priv;
 431         GtkTreeSelection    *sel;
 432
 433         g_return_if_fail (obj);
 434
 435         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 436
 437         if (priv->timer_expander != 0) {
 438                 g_source_remove (priv->timer_expander);
 439                 priv->timer_expander = 0;
 440         }
 441
 442         if (priv->account_store) {
 443                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 444                                              priv->sig1);
 445                 g_object_unref (G_OBJECT(priv->account_store));
 446                 priv->account_store = NULL;
 447         }
 448
 449         if (priv->lock) {
 450                 g_mutex_free (priv->lock);
 451                 priv->lock = NULL;
 452         }
 453
 454         if (priv->query) {
 455                 g_object_unref (G_OBJECT (priv->query));
 456                 priv->query = NULL;
 457         }
 458
 459         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 460         if (sel)
 461                 g_signal_handler_disconnect (G_OBJECT(sel), priv->sig2);
 462
 463         G_OBJECT_CLASS(parent_class)->finalize (obj);
 464 }
 465
 466
 467 static void
 468 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 469 {
 470         ModestFolderViewPrivate *priv;
 471         TnyDevice *device;
 472
 473         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 474         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 475
 476         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 477         device = tny_account_store_get_device (account_store);
 478
 479         if (G_UNLIKELY (priv->account_store)) {
 480                 TnyDevice *old_device;
 481
 482                 old_device = tny_account_store_get_device (priv->account_store);
 483
 484                 if (g_signal_handler_is_connected (G_OBJECT (old_device), priv->sig1))
 485                         g_signal_handler_disconnect (G_OBJECT (old_device),
 486                                                      priv->sig1);
 487
 488                 g_object_unref (G_OBJECT (priv->account_store));
 489                 g_object_unref (G_OBJECT (old_device));
 490         }
 491
 492         priv->account_store = g_object_ref (G_OBJECT (account_store));
 493
 494         priv->sig1 = g_signal_connect (G_OBJECT(account_store), "account_update",
 495                                        G_CALLBACK (on_account_update), self);
 496
 497         if (!update_model (MODEST_FOLDER_VIEW (self),
 498                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 499                 g_printerr ("modest: failed to update model\n");
 500
 501         g_object_unref (G_OBJECT (device));
 502 }
 503
 504 static void
 505 on_account_update (TnyAccountStore *account_store, const gchar *account,
 506                    gpointer user_data)
 507 {
 508         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 509                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 510                 g_printerr ("modest: failed to update model for changes in '%s'",
 511                             account);
 512 }
 513
 514 void
 515 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 516 {
 517         GtkTreeViewColumn *col;
 518
 519         g_return_if_fail (self);
 520
 521         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 522         if (!col) {
 523                 g_printerr ("modest: failed get column for title\n");
 524                 return;
 525         }
 526
 527         gtk_tree_view_column_set_title (col, title);
 528         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 529                                            title != NULL);
 530 }
 531
 532 GtkWidget*
 533 modest_folder_view_new (TnyFolderStoreQuery *query)
 534 {
 535         GObject *self;
 536         ModestFolderViewPrivate *priv;
 537         GtkTreeSelection *sel;
 538
 539         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 540         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 541
 542         priv->query = g_object_ref (query);
 543
 544         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 545         priv->sig2 = g_signal_connect (sel, "changed",
 546                                        G_CALLBACK (on_selection_changed), self);
 547         return GTK_WIDGET(self);
 548 }
 549
 550
 551 static gboolean
 552 update_model_empty (ModestFolderView *self)
 553 {
 554         ModestFolderViewPrivate *priv;
 555
 556         g_return_val_if_fail (self, FALSE);
 557         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 558
 559         g_mutex_lock (priv->lock);
 560         {
 561                 if (priv->monitor) {
 562                         tny_folder_monitor_stop (priv->monitor);
 563                         g_object_unref(G_OBJECT(priv->monitor));
 564                         priv->monitor = NULL;
 565                 }
 566         }
 567         g_mutex_unlock (priv->lock);
 568
 569         g_signal_emit (G_OBJECT(self), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 570                        NULL, TRUE);
 571         return TRUE;
 572 }
 573
 574
 575 /* this feels dirty; any other way to expand all the root items? */
 576 static void
 577 expand_root_items (ModestFolderView *self)
 578 {
 579         GtkTreePath *path;
 580         path = gtk_tree_path_new_first ();
 581
 582         /* all folders should have child items, so.. */
 583         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 584                 gtk_tree_path_next (path);
 585
 586         gtk_tree_path_free (path);
 587 }
 588
 589 static gboolean
 590 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 591 {
 592         ModestFolderViewPrivate *priv;
 593
 594         TnyList          *account_list;
 595         GtkTreeModel     *model, *sortable;
 596
 597         g_return_val_if_fail (account_store, FALSE);
 598
 599         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 600
 601         /* Notify that there is no folder selected */
 602         update_model_empty (self);
 603
 604         /* FIXME: the local accounts are not shown when the query
 605            selects only the subscribed folders. */
 606 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 607         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 608         account_list = TNY_LIST(model);
 609
 610         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 611                                         account_list,
 612                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 613         if (account_list) {
 614                 sortable = gtk_tree_model_sort_new_with_model (model);
 615                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 616                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 617                                                       GTK_SORT_ASCENDING);
 618                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 619                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 620                                                  cmp_rows, NULL, NULL);
 621
 622                 /* Set new model */
 623                 gtk_tree_view_set_model (GTK_TREE_VIEW(self), sortable);
 624                 expand_root_items (self); /* expand all account folders */
 625         }
 626
 627         g_object_unref (model);
 628         return TRUE;
 629 }
 630
 631
 632 static void
 633 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 634 {
 635         GtkTreeModel            *model_sort, *model;
 636         TnyFolder               *folder = NULL;
 637         GtkTreeIter             iter, iter_sort;
 638         GtkTreePath            *path;
 639         ModestFolderView        *tree_view;
 640         ModestFolderViewPrivate *priv;
 641         gint                    type;
 642
 643         g_return_if_fail (sel);
 644         g_return_if_fail (user_data);
 645
 646         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 647         priv->cur_selection = sel;
 648
 649         /* folder was _un_selected if true */
 650         if (!gtk_tree_selection_get_selected (sel, &model_sort, &iter_sort)) {
 651                 priv->cur_folder = NULL; /* FIXME: need this? */
 652                 priv->cur_row = NULL; /* FIXME: need this? */
 653                 return;
 654         }
 655
 656         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 657         gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort),
 658                                                         &iter,
 659                                                         &iter_sort);
 660
 661         tree_view = MODEST_FOLDER_VIEW (user_data);
 662
 663         gtk_tree_model_get (model, &iter,
 664                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 665                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 666                             -1);
 667
 668         if (type == TNY_FOLDER_TYPE_ROOT)
 669                 return;
 670
 671         /* emit 2 signals: one for the unselection of the old one,
 672          * and one for the selection of the new on */
 673         g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 674                        priv->cur_folder, FALSE);
 675
 676         if (priv->cur_folder) {
 677 /*              tny_folder_sync (priv->cur_folder, TRUE, NULL); /\* FIXME *\/ */
 678                 gtk_tree_row_reference_free (priv->cur_row);
 679         }
 680         priv->cur_folder = folder;
 681         g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 682                        folder, TRUE);
 683
 684         path = gtk_tree_model_get_path (model_sort, &iter_sort);
 685         priv->cur_row = gtk_tree_row_reference_new (model_sort, path);
 686         gtk_tree_path_free (path);
 687 }
 688
 689 gboolean
 690 modest_folder_view_update_model (ModestFolderView *self, TnyAccountStore *account_store)
 691 {
 692         g_return_val_if_fail (MODEST_IS_FOLDER_VIEW (self), FALSE);
 693
 694         g_signal_emit (G_OBJECT(self), signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 695                        0, NULL, TRUE);
 696
 697         return update_model (self, MODEST_TNY_ACCOUNT_STORE(account_store)); /* ugly */
 698 }
 699
 700 TnyFolder *
 701 modest_folder_view_get_selected (ModestFolderView *self)
 702 {
 703         ModestFolderViewPrivate *priv;
 704
 705         g_return_val_if_fail (self, NULL);
 706
 707         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 708         if (priv->cur_folder)
 709                 g_object_ref (priv->cur_folder);
 710
 711         return priv->cur_folder;
 712 }
 713
 714 static gboolean
 715 get_model_iter (ModestFolderView *self,
 716                 GtkTreeModel **model,
 717                 GtkTreeIter *iter)
 718 {
 719         GtkTreeModel *model_sort;
 720         GtkTreeIter iter_sort;
 721         GtkTreePath *path;
 722         ModestFolderViewPrivate *priv;
 723
 724         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 725
 726         if (!priv->cur_folder)
 727                 return FALSE;
 728
 729         if (!gtk_tree_row_reference_valid (priv->cur_row))
 730                 return FALSE;
 731
 732         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
 733         *model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 734
 735         /* Get path to retrieve iter */
 736         path = gtk_tree_row_reference_get_path (priv->cur_row);
 737         if (!gtk_tree_model_get_iter (model_sort, &iter_sort, path))
 738                 return FALSE;
 739
 740         gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort),
 741                                                         iter,
 742                                                         &iter_sort);
 743         return TRUE;
 744 }
 745
 746 gboolean
 747 modest_folder_view_rename (ModestFolderView *self)
 748 {
 749         GtkTreeModel *model;
 750         GtkTreeIter iter;
 751         ModestFolderViewPrivate *priv;
 752         gchar *old_name;
 753
 754         g_return_val_if_fail (MODEST_IS_FOLDER_VIEW (self), FALSE);
 755
 756         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 757
 758         if (!get_model_iter (self, &model, &iter))
 759                 return FALSE;
 760
 761         /* Remove old name */
 762         gtk_tree_model_get (model, &iter,
 763                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 764                             &old_name, -1);
 765         g_free (old_name);
 766
 767         /* Set new name */
 768         gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
 769                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 770                             tny_folder_get_name (priv->cur_folder), -1);
 771
 772         /* Invalidate selection */
 773         g_signal_emit (G_OBJECT(self), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 774                        priv->cur_folder, TRUE);
 775
 776         return TRUE;
 777 }
 778
 779 gboolean
 780 modest_folder_view_add_subfolder (ModestFolderView *self, TnyFolder *folder)
 781 {
 782         GtkTreeModel *model;
 783         GtkTreeIter iter, child;
 784
 785         g_return_val_if_fail (MODEST_IS_FOLDER_VIEW (self), FALSE);
 786
 787         if (!get_model_iter (self, &model, &iter))
 788                 return FALSE;
 789
 790         /* Append a new child to the folder */
 791         gtk_tree_store_append (GTK_TREE_STORE (model), &child, &iter);
 792         gtk_tree_store_set (GTK_TREE_STORE (model), &child,
 793                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 794                             tny_folder_get_name (TNY_FOLDER (folder)),
 795                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN,
 796                             tny_folder_get_unread_count (TNY_FOLDER (folder)),
 797                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN,
 798                             tny_folder_get_folder_type (TNY_FOLDER (folder)),
 799                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 800                             folder, -1);
 801
 802         return TRUE;
 803 }
 804
 805 static gint
 806 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 807           gpointer user_data)
 808 {
 809         gint cmp;
 810         gchar         *name1, *name2;
 811         TnyFolderType type;
 812         TnyFolder     *folder1, *folder2;
 813
 814         gtk_tree_model_get (tree_model, iter1,
 815                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 816                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 817                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 818                             -1);
 819         gtk_tree_model_get (tree_model, iter2,
 820                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 821                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 822                             -1);
 823
 824         /* local_folders should be the last one */
 825         if (type == TNY_FOLDER_TYPE_ROOT) {
 826                 /* the account name is also the name of the root folder
 827                  * in case of local folders */
 828                 if (name1 && strcmp (name1, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 829                         cmp = +1;
 830                 else if (name2 && strcmp (name2, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 831                         cmp = -1;
 832                 else
 833                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 834         } else
 835                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 836
 837         g_free (name1);
 838         g_free (name2);
 839
 840         return cmp;
 841 }
 842
 843 /*****************************************************************************/
 844 /*                        DRAG and DROP stuff                                */
 845 /*****************************************************************************/
 846
 847 /*
 848  * This function fills the #GtkSelectionData with the row and the
 849  * model that has been dragged. It's called when this widget is a
 850  * source for dnd after the event drop happened
 851  */
 852 static void
 853 on_drag_data_get (GtkWidget *widget,
 854                   GdkDragContext *context,
 855                   GtkSelectionData *selection_data,
 856                   guint info,
 857                   guint time,
 858                   gpointer data)
 859 {
 860         GtkTreeSelection *selection;
 861         GtkTreeModel *model_sort, *model;
 862         GtkTreeIter iter;
 863         GtkTreePath *source_row_sort;
 864         GtkTreePath *source_row;
 865
 866         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 867         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 868         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 869
 870         /* Get the unsorted path and model */
 871         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 872         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 873                                                                      source_row_sort);
 874
 875         gtk_tree_set_row_drag_data (selection_data,
 876                                     model,
 877                                     source_row);
 878
 879         gtk_tree_path_free (source_row_sort);
 880         gtk_tree_path_free (source_row);
 881 }
 882
 883 /*
 884  * This function receives the data set by the "drag-data-get" signal
 885  * handler. This information comes within the #GtkSelectionData. This
 886  * function will manage both the drags of folders of the treeview and
 887  * drags of headers of the header view widget.
 888  */
 889 static void
 890 on_drag_data_received (GtkWidget *widget,
 891                        GdkDragContext *context,
 892                        gint x,
 893                        gint y,
 894                        GtkSelectionData *selection_data,
 895                        guint target_type,
 896                        guint time,
 897                        gpointer data)
 898 {
 899         GtkWidget *source_widget;
 900         GtkTreeModel *model_sort, *dest_model, *source_model;
 901         GtkTreePath *source_row, *dest_row, *child_dest_row;
 902         GtkTreeViewDropPosition pos;
 903         gboolean success = FALSE, delete_source = FALSE;
 904
 905         /* Do not allow further process */
 906         g_signal_stop_emission_by_name (widget, "drag-data-received");
 907
 908         /* Check if the get_data failed */
 909         if (selection_data == NULL || selection_data->length < 0)
 910                 return;
 911
 912         /* Get the action */
 913         if (context->action == GDK_ACTION_MOVE)
 914                 delete_source = TRUE;
 915
 916         /* Get the models */
 917         source_widget = gtk_drag_get_source_widget (context);
 918         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
 919
 920         gtk_tree_get_row_drag_data (selection_data,
 921                                     &source_model,
 922                                     &source_row);
 923
 924         /* Select the destination model */
 925         if (source_widget == widget)
 926                 dest_model = source_model;
 927         else
 928                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 929
 930
 931         /* Get the path to the destination row. Can not call
 932            gtk_tree_view_get_drag_dest_row() because the source row
 933            it's not selected anymore */
 934         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
 935                                            x, y,
 936                                            &dest_row,
 937                                            &pos);
 938
 939         /* Only allow drops IN other rows */
 940         if (!dest_row ||
 941             pos == GTK_TREE_VIEW_DROP_BEFORE ||
 942             pos == GTK_TREE_VIEW_DROP_AFTER)
 943                 goto finish;
 944
 945         /* Get the destination row in the usorted model */
 946         child_dest_row =
 947                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 948                                                                 dest_row);
 949         gtk_tree_path_free (dest_row);
 950
 951         /* Drags from the header view */
 952         if ((target_type == TARGET_TREE_ROW) && (source_widget != widget)) {
 953
 954                 /* TODO: do the mail operation */
 955
 956                 success = TRUE;
 957         } else {
 958                 GtkTreeRowReference *source_row_reference;
 959                 GtkTreeIter parent_iter, iter;
 960                 TnyFolder *folder;
 961                 TnyFolderStore *parent_folder;
 962                 gboolean done;
 963
 964                 /* Check if the drag is possible */
 965                 if (!gtk_tree_path_compare (source_row, child_dest_row))
 966                         goto out;
 967
 968                 if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
 969                                                            child_dest_row,
 970                                                            selection_data))
 971                         goto out;
 972
 973                 /* Do the mail operation */
 974                 gtk_tree_model_get_iter (source_model, &parent_iter, child_dest_row);
 975                 gtk_tree_model_get_iter (source_model, &iter, source_row);
 976                 gtk_tree_model_get (source_model, &parent_iter,
 977                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 978                                     &parent_folder, -1);
 979                 gtk_tree_model_get (source_model, &iter,
 980                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 981                                     &folder, -1);
 982
 983                 g_signal_emit (G_OBJECT (widget), signals[FOLDER_MOVED_SIGNAL], 0,
 984                                folder, parent_folder, &done);
 985                 if (!done)
 986                         goto out;
 987
 988                 /* Get a row reference to the source path because the path
 989                    could change after the insertion. The gtk_drag_finish() is
 990                    not able to delete the source because that, so we have to
 991                    do it manually */
 992                 source_row_reference = gtk_tree_row_reference_new (source_model, source_row);
 993                 gtk_tree_path_free (source_row);
 994
 995                 /* Insert the dragged row as a child of the dest row */
 996                 gtk_tree_path_down (child_dest_row);
 997                 if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (dest_model),
 998                                                            child_dest_row,
 999                                                            selection_data)) {
1000
1001                         source_row = gtk_tree_row_reference_get_path (source_row_reference);
1002
1003                         success = TRUE;
1004                 }
1005                 gtk_tree_row_reference_free (source_row_reference);
1006         }
1007  out:
1008         gtk_tree_path_free (child_dest_row);
1009
1010         /* Save the new path, will be used by the
1011            drag-data-delete handler */
1012         if (success)
1013                 g_object_set_data (G_OBJECT (source_widget),
1014                                    ROW_REF_DATA_NAME,
1015                                    gtk_tree_path_copy (source_row));
1016
1017  finish:
1018         gtk_drag_finish (context, success, (success && delete_source), time);
1019 }
1020
1021 /*
1022  * We define a "drag-drop" signal handler because we do not want to
1023  * use the default one, because the default one always calls
1024  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1025  * signal handler, because there we have all the information available
1026  * to know if the dnd was a success or not.
1027  */
1028 static gboolean
1029 drag_drop_cb (GtkWidget      *widget,
1030               GdkDragContext *context,
1031               gint            x,
1032               gint            y,
1033               guint           time,
1034               gpointer        user_data)
1035 {
1036         if (!context->targets)
1037                 return FALSE;
1038
1039         /* Request the data from the source. */
1040         gtk_drag_get_data(widget,
1041                           context,
1042                           GDK_POINTER_TO_ATOM (context->targets->data),
1043                           time);
1044
1045     return TRUE;
1046 }
1047
1048 /*
1049  * This function deletes the data that has been dragged from its
1050  * source widget. Since is a function received by the source of the
1051  * drag, this function only deletes rows of the folder view
1052  * widget. The header view widget will need to define its own one.
1053  */
1054 static void
1055 drag_data_delete_cb (GtkWidget      *widget,
1056                      GdkDragContext *context,
1057                      gpointer        user_data)
1058 {
1059         GtkTreePath *source_row;
1060         GtkTreeModel *model_sort, *model;
1061
1062         /* Clean dest row */
1063         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
1064                                          NULL,
1065                                          GTK_TREE_VIEW_DROP_BEFORE);
1066
1067         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1068         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1069         source_row = g_object_steal_data (G_OBJECT (widget), ROW_REF_DATA_NAME);
1070
1071         /* Delete the source row */
1072         gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
1073                                                source_row);
1074
1075         gtk_tree_path_free (source_row);
1076 }
1077
1078 /*
1079  * This function expands a node of a tree view if it's not expanded
1080  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1081  * does that, so that's why they're here.
1082  */
1083 static gint
1084 expand_row_timeout (gpointer data)
1085 {
1086         GtkTreeView *tree_view = data;
1087         GtkTreePath *dest_path = NULL;
1088         GtkTreeViewDropPosition pos;
1089         gboolean result = FALSE;
1090
1091         GDK_THREADS_ENTER ();
1092
1093         gtk_tree_view_get_drag_dest_row (tree_view,
1094                                          &dest_path,
1095                                          &pos);
1096
1097         if (dest_path &&
1098             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1099              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1100                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1101                 gtk_tree_path_free (dest_path);
1102         }
1103         else {
1104                 if (dest_path)
1105                         gtk_tree_path_free (dest_path);
1106
1107                 result = TRUE;
1108         }
1109
1110         GDK_THREADS_LEAVE ();
1111
1112         return result;
1113 }
1114
1115 /*
1116  * This function is called whenever the pointer is moved over a widget
1117  * while dragging some data. It installs a timeout that will expand a
1118  * node of the treeview if not expanded yet. This function also calls
1119  * gdk_drag_status in order to set the suggested action that will be
1120  * used by the "drag-data-received" signal handler to know if we
1121  * should do a move or just a copy of the data.
1122  */
1123 static gboolean
1124 on_drag_motion (GtkWidget      *widget,
1125                 GdkDragContext *context,
1126                 gint            x,
1127                 gint            y,
1128                 guint           time,
1129                 gpointer        user_data)
1130 {
1131         GtkTreeViewDropPosition pos;
1132         GtkTreePath *dest_row;
1133         ModestFolderViewPrivate *priv;
1134         GdkDragAction suggested_action;
1135
1136         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1137
1138         if (priv->timer_expander != 0) {
1139                 g_source_remove (priv->timer_expander);
1140                 priv->timer_expander = 0;
1141         }
1142
1143         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1144                                            x, y,
1145                                            &dest_row,
1146                                            &pos);
1147
1148         if (!dest_row)
1149                 return FALSE;
1150
1151         /* Expand the selected row after 1/2 second */
1152         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1153                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1154                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1155         }
1156         gtk_tree_path_free (dest_row);
1157
1158         /* Select the desired action. By default we pick MOVE */
1159         suggested_action = GDK_ACTION_MOVE;
1160
1161         if (context->actions == GDK_ACTION_COPY)
1162             gdk_drag_status(context, GDK_ACTION_COPY, time);
1163         else if (context->actions == GDK_ACTION_MOVE)
1164             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1165         else if (context->actions & suggested_action)
1166             gdk_drag_status(context, suggested_action, time);
1167         else
1168             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1169
1170         return TRUE;
1171 }
1172
1173 /*
1174  * This function sets the treeview as a source and a target for dnd
1175  * events. It also connects all the requirede signals.
1176  */
1177 static void
1178 setup_drag_and_drop (GtkTreeView *self)
1179 {
1180         /* Set up the folder view as a dnd destination. Set only the
1181            highlight flag, otherwise gtk will have a different
1182            behaviour */
1183         gtk_drag_dest_set (GTK_WIDGET (self),
1184                            GTK_DEST_DEFAULT_HIGHLIGHT,
1185                            drag_types,
1186                            G_N_ELEMENTS (drag_types),
1187                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1188
1189         gtk_signal_connect(GTK_OBJECT (self),
1190                            "drag_data_received",
1191                            GTK_SIGNAL_FUNC(on_drag_data_received),
1192                            NULL);
1193
1194
1195         /* Set up the treeview as a dnd source */
1196         gtk_drag_source_set (GTK_WIDGET (self),
1197                              GDK_BUTTON1_MASK,
1198                              drag_types,
1199                              G_N_ELEMENTS (drag_types),
1200                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1201
1202         gtk_signal_connect(GTK_OBJECT (self),
1203                            "drag_data_delete",
1204                            GTK_SIGNAL_FUNC(drag_data_delete_cb),
1205                            NULL);
1206
1207         gtk_signal_connect(GTK_OBJECT (self),
1208                            "drag_motion",
1209                            GTK_SIGNAL_FUNC(on_drag_motion),
1210                            NULL);
1211
1212
1213         gtk_signal_connect(GTK_OBJECT (self),
1214                            "drag_data_get",
1215                            GTK_SIGNAL_FUNC(on_drag_data_get),
1216                            NULL);
1217
1218         gtk_signal_connect(GTK_OBJECT (self),
1219                            "drag_drop",
1220                            GTK_SIGNAL_FUNC(drag_drop_cb),
1221                            NULL);
1222 }