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 #include <modest-dnd.h>
  52
  53 /* 'private'/'protected' functions */
  54 static void modest_folder_view_class_init  (ModestFolderViewClass *klass);
  55 static void modest_folder_view_init        (ModestFolderView *obj);
  56 static void modest_folder_view_finalize    (GObject *obj);
  57
  58 static void         tny_account_store_view_init (gpointer g,
  59                                                  gpointer iface_data);
  60
  61 static void         modest_folder_view_set_account_store (TnyAccountStoreView *self,
  62                                                           TnyAccountStore     *account_store);
  63
  64 static gboolean     update_model           (ModestFolderView *self,
  65                                             ModestTnyAccountStore *account_store);
  66
  67 static gboolean     update_model_empty     (ModestFolderView *self);
  68
  69 static void         on_selection_changed   (GtkTreeSelection *sel, gpointer data);
  70
  71 static void         on_account_update      (TnyAccountStore *account_store,
  72                                             const gchar *account,
  73                                             gpointer user_data);
  74
  75 static void         on_accounts_reloaded   (TnyAccountStore *store,
  76                                             gpointer user_data);
  77
  78 static gint         cmp_rows               (GtkTreeModel *tree_model,
  79                                             GtkTreeIter *iter1,
  80                                             GtkTreeIter *iter2,
  81                                             gpointer user_data);
  82
  83 /* DnD functions */
  84 static void         on_drag_data_get       (GtkWidget *widget,
  85                                             GdkDragContext *context,
  86                                             GtkSelectionData *selection_data,
  87                                             guint info,
  88                                             guint time,
  89                                             gpointer data);
  90
  91 static void         on_drag_data_received  (GtkWidget *widget,
  92                                             GdkDragContext *context,
  93                                             gint x,
  94                                             gint y,
  95                                             GtkSelectionData *selection_data,
  96                                             guint info,
  97                                             guint time,
  98                                             gpointer data);
  99
 100 static gboolean     on_drag_motion         (GtkWidget      *widget,
 101                                             GdkDragContext *context,
 102                                             gint            x,
 103                                             gint            y,
 104                                             guint           time,
 105                                             gpointer        user_data);
 106
 107 static gint         expand_row_timeout     (gpointer data);
 108
 109 static void         setup_drag_and_drop    (GtkTreeView *self);
 110
 111 enum {
 112         FOLDER_SELECTION_CHANGED_SIGNAL,
 113         FOLDER_XFER_SIGNAL,
 114         LAST_SIGNAL
 115 };
 116
 117 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 118 struct _ModestFolderViewPrivate {
 119         TnyAccountStore     *account_store;
 120         TnyFolder           *cur_folder;
 121         GtkTreeRowReference *cur_row;
 122
 123         gulong               account_update_signal;
 124         gulong               changed_signal;
 125         gulong               accounts_reloaded_signal;
 126         GMutex              *lock;
 127
 128         GtkTreeSelection    *cur_selection;
 129         TnyFolderStoreQuery *query;
 130         guint                timer_expander;
 131
 132         TnyFolderMonitor    *monitor;
 133 };
 134 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 135         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 136                                      MODEST_TYPE_FOLDER_VIEW,   \
 137                                      ModestFolderViewPrivate))
 138 /* globals */
 139 static GObjectClass *parent_class = NULL;
 140
 141 static guint signals[LAST_SIGNAL] = {0};
 142
 143 GType
 144 modest_folder_view_get_type (void)
 145 {
 146         static GType my_type = 0;
 147         if (!my_type) {
 148                 static const GTypeInfo my_info = {
 149                         sizeof(ModestFolderViewClass),
 150                         NULL,           /* base init */
 151                         NULL,           /* base finalize */
 152                         (GClassInitFunc) modest_folder_view_class_init,
 153                         NULL,           /* class finalize */
 154                         NULL,           /* class data */
 155                         sizeof(ModestFolderView),
 156                         1,              /* n_preallocs */
 157                         (GInstanceInitFunc) modest_folder_view_init,
 158                         NULL
 159                 };
 160
 161                 static const GInterfaceInfo tny_account_store_view_info = {
 162                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 163                         NULL,         /* interface_finalize */
 164                         NULL          /* interface_data */
 165                 };
 166
 167
 168                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 169                                                   "ModestFolderView",
 170                                                   &my_info, 0);
 171
 172                 g_type_add_interface_static (my_type,
 173                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 174                                              &tny_account_store_view_info);
 175         }
 176         return my_type;
 177 }
 178
 179 static void
 180 modest_folder_view_class_init (ModestFolderViewClass *klass)
 181 {
 182         GObjectClass *gobject_class;
 183         gobject_class = (GObjectClass*) klass;
 184
 185         parent_class            = g_type_class_peek_parent (klass);
 186         gobject_class->finalize = modest_folder_view_finalize;
 187
 188         g_type_class_add_private (gobject_class,
 189                                   sizeof(ModestFolderViewPrivate));
 190
 191         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 192                 g_signal_new ("folder_selection_changed",
 193                               G_TYPE_FROM_CLASS (gobject_class),
 194                               G_SIGNAL_RUN_FIRST,
 195                               G_STRUCT_OFFSET (ModestFolderViewClass,
 196                                                folder_selection_changed),
 197                               NULL, NULL,
 198                               modest_marshal_VOID__POINTER_BOOLEAN,
 199                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 200
 201         /**
 202          * ModestFolderView::folder-moved
 203          * @self: the #MailOperation that emits the signal
 204          * @folder: the #TnyFolder that is going to be moved
 205          * @parent: then #TnyFolderStore that is going to be the new parent
 206          * @done: indicates if the folder move was correctly completed or not
 207          * @user_data: user data set when the signal handler was connected
 208          *
 209          * Emitted when a the user wants to move a folder through a
 210          * drag and drop action
 211          */
 212         signals[FOLDER_XFER_SIGNAL] =
 213                 g_signal_new ("folder_xfer",
 214                               G_TYPE_FROM_CLASS (gobject_class),
 215                               G_SIGNAL_RUN_FIRST,
 216                               G_STRUCT_OFFSET (ModestFolderViewClass, folder_xfer),
 217                               NULL, NULL,
 218                               modest_marshal_VOID__POINTER_POINTER_BOOL_POINTER,
 219                               G_TYPE_NONE, 4,
 220                               G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_BOOLEAN, G_TYPE_POINTER);
 221 }
 222
 223
 224
 225 static void
 226 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 227                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 228 {
 229         GObject *rendobj;
 230         gchar *fname = NULL;
 231         gint unread;
 232         TnyFolderType type;
 233         TnyFolder *folder = NULL;
 234
 235         g_return_if_fail (column);
 236         g_return_if_fail (tree_model);
 237
 238         gtk_tree_model_get (tree_model, iter,
 239                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 240                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 241                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 242                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 243                             -1);
 244         rendobj = G_OBJECT(renderer);
 245
 246         if (!fname)
 247                 return;
 248
 249         if (folder && type != TNY_FOLDER_TYPE_ROOT) { /* FIXME: tnymail bug? crashes with root folders */
 250                 if (modest_tny_folder_is_local_folder (folder)) {
 251                         TnyFolderType type;
 252                         type = modest_tny_folder_get_local_folder_type (folder);
 253                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 254                                 g_free (fname);
 255                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 256                         }
 257                 }
 258         } else if (folder && type == TNY_FOLDER_TYPE_ROOT) {
 259                 if (strcmp (fname, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0) {/* FIXME: hack */
 260                         g_free (fname);
 261                         fname = g_strdup (MODEST_LOCAL_FOLDERS_DISPLAY_NAME);
 262                 }
 263         }
 264
 265         if (unread > 0) {
 266                 gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 267                 g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 268                 g_free (folder_title);
 269         } else
 270                 g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 271
 272         g_free (fname);
 273         if (folder) g_object_unref (G_OBJECT (folder));
 274 }
 275
 276
 277 static GdkPixbuf*
 278 get_cached_icon (const gchar *name)
 279 {
 280         GError *err = NULL;
 281         gpointer pixbuf;
 282         gpointer orig_key;
 283         static GHashTable *icon_cache = NULL;
 284
 285         g_return_val_if_fail (name, NULL);
 286
 287         if (G_UNLIKELY(!icon_cache))
 288                 icon_cache = modest_cache_mgr_get_cache (modest_runtime_get_cache_mgr(),
 289                                                          MODEST_CACHE_MGR_CACHE_TYPE_PIXBUF);
 290
 291         if (!icon_cache || !g_hash_table_lookup_extended (icon_cache, name, &orig_key, &pixbuf)) {
 292                 pixbuf = (gpointer)gdk_pixbuf_new_from_file (name, &err);
 293                 if (!pixbuf) {
 294                         g_printerr ("modest: error in icon factory while loading '%s': %s\n",
 295                                     name, err->message);
 296                         g_error_free (err);
 297                 }
 298                 /* if we cannot find it, we still insert (if we have a cache), so we get the error
 299                  * only once */
 300                 if (icon_cache)
 301                         g_hash_table_insert (icon_cache, g_strdup(name),(gpointer)pixbuf);
 302         }
 303         return GDK_PIXBUF(pixbuf);
 304 }
 305
 306
 307 static void
 308 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 309                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 310 {
 311         GObject *rendobj;
 312         GdkPixbuf *pixbuf;
 313         TnyFolderType type;
 314         gchar *fname = NULL;
 315         gint unread;
 316
 317         rendobj = G_OBJECT(renderer);
 318         gtk_tree_model_get (tree_model, iter,
 319                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 320                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 321                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 322                             -1);
 323         rendobj = G_OBJECT(renderer);
 324
 325         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 326                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 327         }
 328         g_free (fname);
 329
 330         switch (type) {
 331         case TNY_FOLDER_TYPE_ROOT:
 332                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_ACCOUNT);
 333                 break;
 334         case TNY_FOLDER_TYPE_INBOX:
 335                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_INBOX);
 336                 break;
 337         case TNY_FOLDER_TYPE_OUTBOX:
 338                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_OUTBOX);
 339                 break;
 340         case TNY_FOLDER_TYPE_JUNK:
 341                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_JUNK);
 342                 break;
 343         case TNY_FOLDER_TYPE_SENT:
 344                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_SENT);
 345                 break;
 346         case TNY_FOLDER_TYPE_TRASH:
 347                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_TRASH);
 348                 break;
 349         case TNY_FOLDER_TYPE_DRAFTS:
 350                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_DRAFTS);
 351                 break;
 352         case TNY_FOLDER_TYPE_NOTES:
 353                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NOTES);
 354                 break;
 355         case TNY_FOLDER_TYPE_CALENDAR:
 356                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CALENDAR);
 357                 break;
 358         case TNY_FOLDER_TYPE_CONTACTS:
 359                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CONTACTS);
 360                 break;
 361         case TNY_FOLDER_TYPE_NORMAL:
 362         default:
 363                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NORMAL);
 364                 break;
 365         }
 366         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 367 }
 368
 369 static void
 370 modest_folder_view_init (ModestFolderView *obj)
 371 {
 372         ModestFolderViewPrivate *priv;
 373         GtkTreeViewColumn *column;
 374         GtkCellRenderer *renderer;
 375         GtkTreeSelection *sel;
 376
 377         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 378
 379         priv->timer_expander = 0;
 380         priv->account_store  = NULL;
 381         priv->cur_folder     = NULL;
 382         priv->cur_row        = NULL;
 383         priv->query          = NULL;
 384         priv->monitor        = NULL;
 385
 386         priv->lock           = g_mutex_new ();
 387
 388         column = gtk_tree_view_column_new ();
 389         gtk_tree_view_append_column (GTK_TREE_VIEW(obj),column);
 390
 391         renderer = gtk_cell_renderer_pixbuf_new();
 392         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 393         gtk_tree_view_column_set_cell_data_func(column, renderer,
 394                                                 icon_cell_data, NULL, NULL);
 395
 396         renderer = gtk_cell_renderer_text_new();
 397         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 398         gtk_tree_view_column_set_cell_data_func(column, renderer,
 399                                                 text_cell_data, NULL, NULL);
 400
 401         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 402         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 403
 404         gtk_tree_view_column_set_spacing (column, 2);
 405         gtk_tree_view_column_set_resizable (column, TRUE);
 406         gtk_tree_view_column_set_fixed_width (column, TRUE);
 407         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(obj), FALSE);
 408         gtk_tree_view_set_enable_search     (GTK_TREE_VIEW(obj), FALSE);
 409
 410         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 411 }
 412
 413 static void
 414 tny_account_store_view_init (gpointer g, gpointer iface_data)
 415 {
 416         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 417
 418         klass->set_account_store_func = modest_folder_view_set_account_store;
 419
 420         return;
 421 }
 422
 423 static void
 424 modest_folder_view_finalize (GObject *obj)
 425 {
 426         ModestFolderViewPrivate *priv;
 427         GtkTreeSelection    *sel;
 428
 429         g_return_if_fail (obj);
 430
 431         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 432
 433         if (priv->timer_expander != 0) {
 434                 g_source_remove (priv->timer_expander);
 435                 priv->timer_expander = 0;
 436         }
 437
 438         if (priv->account_store) {
 439                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 440                                              priv->account_update_signal);
 441                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 442                                              priv->accounts_reloaded_signal);
 443                 g_object_unref (G_OBJECT(priv->account_store));
 444                 priv->account_store = NULL;
 445         }
 446
 447         if (priv->lock) {
 448                 g_mutex_free (priv->lock);
 449                 priv->lock = NULL;
 450         }
 451
 452         if (priv->query) {
 453                 g_object_unref (G_OBJECT (priv->query));
 454                 priv->query = NULL;
 455         }
 456
 457         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 458         if (sel)
 459                 g_signal_handler_disconnect (G_OBJECT(sel), priv->changed_signal);
 460
 461         G_OBJECT_CLASS(parent_class)->finalize (obj);
 462 }
 463
 464
 465 static void
 466 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 467 {
 468         ModestFolderViewPrivate *priv;
 469         TnyDevice *device;
 470
 471         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 472         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 473
 474         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 475         device = tny_account_store_get_device (account_store);
 476
 477         if (G_UNLIKELY (priv->account_store)) {
 478
 479                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 480                                                    priv->account_update_signal))
 481                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 482                                                      priv->account_update_signal);
 483                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 484                                                    priv->accounts_reloaded_signal))
 485                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 486                                                      priv->accounts_reloaded_signal);
 487
 488                 g_object_unref (G_OBJECT (priv->account_store));
 489         }
 490
 491         priv->account_store = g_object_ref (G_OBJECT (account_store));
 492
 493         priv->account_update_signal =
 494                 g_signal_connect (G_OBJECT(account_store), "account_update",
 495                                   G_CALLBACK (on_account_update), self);
 496
 497         priv->accounts_reloaded_signal =
 498                 g_signal_connect (G_OBJECT(account_store), "accounts_reloaded",
 499                                   G_CALLBACK (on_accounts_reloaded), self);
 500
 501         if (!update_model (MODEST_FOLDER_VIEW (self),
 502                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 503                 g_printerr ("modest: failed to update model\n");
 504
 505         g_object_unref (G_OBJECT (device));
 506 }
 507
 508 static void
 509 on_account_update (TnyAccountStore *account_store, const gchar *account,
 510                    gpointer user_data)
 511 {
 512         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 513                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 514                 g_printerr ("modest: failed to update model for changes in '%s'",
 515                             account);
 516 }
 517
 518 static void
 519 on_accounts_reloaded   (TnyAccountStore *account_store,
 520                         gpointer user_data)
 521 {
 522         update_model (MODEST_FOLDER_VIEW (user_data),
 523                       MODEST_TNY_ACCOUNT_STORE(account_store));
 524 }
 525
 526 void
 527 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 528 {
 529         GtkTreeViewColumn *col;
 530
 531         g_return_if_fail (self);
 532
 533         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 534         if (!col) {
 535                 g_printerr ("modest: failed get column for title\n");
 536                 return;
 537         }
 538
 539         gtk_tree_view_column_set_title (col, title);
 540         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 541                                            title != NULL);
 542 }
 543
 544 GtkWidget*
 545 modest_folder_view_new (TnyFolderStoreQuery *query)
 546 {
 547         GObject *self;
 548         ModestFolderViewPrivate *priv;
 549         GtkTreeSelection *sel;
 550
 551         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 552         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 553
 554         priv->query = g_object_ref (query);
 555
 556         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 557         priv->changed_signal = g_signal_connect (sel, "changed",
 558                                                  G_CALLBACK (on_selection_changed), self);
 559         return GTK_WIDGET(self);
 560 }
 561
 562
 563 static gboolean
 564 update_model_empty (ModestFolderView *self)
 565 {
 566         ModestFolderViewPrivate *priv;
 567
 568         g_return_val_if_fail (self, FALSE);
 569         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 570
 571         g_mutex_lock (priv->lock);
 572         {
 573                 if (priv->monitor) {
 574                         tny_folder_monitor_stop (priv->monitor);
 575                         g_object_unref(G_OBJECT(priv->monitor));
 576                         priv->monitor = NULL;
 577                 }
 578         }
 579         g_mutex_unlock (priv->lock);
 580
 581         g_signal_emit (G_OBJECT(self), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 582                        NULL, TRUE);
 583         return TRUE;
 584 }
 585
 586
 587 /* this feels dirty; any other way to expand all the root items? */
 588 static void
 589 expand_root_items (ModestFolderView *self)
 590 {
 591         GtkTreePath *path;
 592         path = gtk_tree_path_new_first ();
 593
 594         /* all folders should have child items, so.. */
 595         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 596                 gtk_tree_path_next (path);
 597
 598         gtk_tree_path_free (path);
 599 }
 600
 601 static gboolean
 602 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 603 {
 604         ModestFolderViewPrivate *priv;
 605
 606         TnyList          *account_list;
 607         GtkTreeModel     *model, *sortable;
 608
 609         g_return_val_if_fail (account_store, FALSE);
 610
 611         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 612
 613         /* Notify that there is no folder selected */
 614         update_model_empty (self);
 615
 616         /* FIXME: the local accounts are not shown when the query
 617            selects only the subscribed folders. */
 618 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 619         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 620         account_list = TNY_LIST(model);
 621
 622         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 623                                         account_list,
 624                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 625         if (account_list) {
 626                 sortable = gtk_tree_model_sort_new_with_model (model);
 627                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 628                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 629                                                       GTK_SORT_ASCENDING);
 630                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 631                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 632                                                  cmp_rows, NULL, NULL);
 633
 634                 /* Set new model */
 635                 gtk_tree_view_set_model (GTK_TREE_VIEW(self), sortable);
 636                 expand_root_items (self); /* expand all account folders */
 637                 g_object_unref (account_list);
 638         }
 639
 640         return TRUE;
 641 }
 642
 643
 644 static void
 645 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 646 {
 647         GtkTreeModel            *model_sort, *model;
 648         TnyFolder               *folder = NULL;
 649         GtkTreeIter             iter, iter_sort;
 650         GtkTreePath            *path;
 651         ModestFolderView        *tree_view;
 652         ModestFolderViewPrivate *priv;
 653         gint                    type;
 654
 655         g_return_if_fail (sel);
 656         g_return_if_fail (user_data);
 657
 658         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 659         priv->cur_selection = sel;
 660
 661         /* folder was _un_selected if true */
 662         if (!gtk_tree_selection_get_selected (sel, &model_sort, &iter_sort)) {
 663                 priv->cur_folder = NULL; /* FIXME: need this? */
 664                 gtk_tree_row_reference_free (priv->cur_row);
 665                 priv->cur_row = NULL;
 666                 return;
 667         }
 668
 669         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 670         gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort),
 671                                                         &iter,
 672                                                         &iter_sort);
 673
 674         tree_view = MODEST_FOLDER_VIEW (user_data);
 675
 676         gtk_tree_model_get (model, &iter,
 677                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 678                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 679                             -1);
 680
 681         if (type == TNY_FOLDER_TYPE_ROOT) {
 682                 g_object_unref (folder);
 683                 return;
 684         }
 685
 686         /* Current folder was unselected */
 687         g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 688                        priv->cur_folder, FALSE);
 689
 690         if (priv->cur_row) {
 691 /*              tny_folder_sync (priv->cur_folder, TRUE, NULL); /\* FIXME *\/ */
 692                 gtk_tree_row_reference_free (priv->cur_row);
 693         }
 694
 695         /* New current references */
 696         path = gtk_tree_model_get_path (model_sort, &iter_sort);
 697         priv->cur_folder = folder;
 698         priv->cur_row = gtk_tree_row_reference_new (model_sort, path);
 699
 700         /* Frees */
 701         gtk_tree_path_free (path);
 702         g_object_unref (G_OBJECT (folder));
 703
 704         /* New folder has been selected */
 705         g_signal_emit (G_OBJECT(tree_view),
 706                        signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 707                        0, folder, TRUE);
 708 }
 709
 710 TnyFolder *
 711 modest_folder_view_get_selected (ModestFolderView *self)
 712 {
 713         ModestFolderViewPrivate *priv;
 714
 715         g_return_val_if_fail (self, NULL);
 716
 717         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 718         if (priv->cur_folder)
 719                 g_object_ref (priv->cur_folder);
 720
 721         return priv->cur_folder;
 722 }
 723
 724 static gboolean
 725 get_model_iter (ModestFolderView *self,
 726                 GtkTreeModel **model,
 727                 GtkTreeIter *iter)
 728 {
 729         GtkTreeModel *model_sort;
 730         GtkTreeIter iter_sort;
 731         GtkTreePath *path;
 732         ModestFolderViewPrivate *priv;
 733
 734         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 735
 736         if (!priv->cur_folder)
 737                 return FALSE;
 738
 739         if (!gtk_tree_row_reference_valid (priv->cur_row))
 740                 return FALSE;
 741
 742         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
 743         *model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 744
 745         /* Get path to retrieve iter */
 746         path = gtk_tree_row_reference_get_path (priv->cur_row);
 747         if (!gtk_tree_model_get_iter (model_sort, &iter_sort, path))
 748                 return FALSE;
 749
 750         gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort),
 751                                                         iter,
 752                                                         &iter_sort);
 753         return TRUE;
 754 }
 755
 756 gboolean
 757 modest_folder_view_rename (ModestFolderView *self)
 758 {
 759         GtkTreeModel *model;
 760         GtkTreeIter iter;
 761         ModestFolderViewPrivate *priv;
 762
 763         g_return_val_if_fail (MODEST_IS_FOLDER_VIEW (self), FALSE);
 764
 765         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 766
 767         if (!get_model_iter (self, &model, &iter))
 768                 return FALSE;
 769
 770         /* Set new name */
 771         gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
 772                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 773                             tny_folder_get_name (priv->cur_folder), -1);
 774
 775         /* Invalidate selection */
 776         g_signal_emit (G_OBJECT(self), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 777                        priv->cur_folder, TRUE);
 778
 779         return TRUE;
 780 }
 781
 782 gboolean
 783 modest_folder_view_add_subfolder (ModestFolderView *self, TnyFolder *folder)
 784 {
 785         GtkTreeModel *model;
 786         GtkTreeIter iter, child;
 787
 788         g_return_val_if_fail (MODEST_IS_FOLDER_VIEW (self), FALSE);
 789
 790         if (!get_model_iter (self, &model, &iter))
 791                 return FALSE;
 792
 793         /* Append a new child to the folder */
 794         gtk_tree_store_append (GTK_TREE_STORE (model), &child, &iter);
 795         gtk_tree_store_set (GTK_TREE_STORE (model), &child,
 796                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 797                             tny_folder_get_name (TNY_FOLDER (folder)),
 798                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN,
 799                             tny_folder_get_unread_count (TNY_FOLDER (folder)),
 800                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN,
 801                             tny_folder_get_folder_type (TNY_FOLDER (folder)),
 802                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 803                             folder, -1);
 804
 805         return TRUE;
 806 }
 807
 808 static gint
 809 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 810           gpointer user_data)
 811 {
 812         gint cmp;
 813         gchar         *name1, *name2;
 814         TnyFolderType type;
 815         TnyFolder     *folder1, *folder2;
 816
 817         gtk_tree_model_get (tree_model, iter1,
 818                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 819                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 820                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 821                             -1);
 822         gtk_tree_model_get (tree_model, iter2,
 823                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 824                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 825                             -1);
 826
 827         /* local_folders should be the last one */
 828         if (type == TNY_FOLDER_TYPE_ROOT) {
 829                 /* the account name is also the name of the root folder
 830                  * in case of local folders */
 831                 if (name1 && strcmp (name1, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 832                         cmp = +1;
 833                 else if (name2 && strcmp (name2, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 834                         cmp = -1;
 835                 else
 836                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 837         } else
 838                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 839
 840
 841         if (folder1)
 842                 g_object_unref(G_OBJECT(folder1));
 843         if (folder2)
 844                 g_object_unref(G_OBJECT(folder2));
 845
 846         g_free (name1);
 847         g_free (name2);
 848
 849         return cmp;
 850 }
 851
 852 /*****************************************************************************/
 853 /*                        DRAG and DROP stuff                                */
 854 /*****************************************************************************/
 855
 856 /*
 857  * This function fills the #GtkSelectionData with the row and the
 858  * model that has been dragged. It's called when this widget is a
 859  * source for dnd after the event drop happened
 860  */
 861 static void
 862 on_drag_data_get (GtkWidget *widget,
 863                   GdkDragContext *context,
 864                   GtkSelectionData *selection_data,
 865                   guint info,
 866                   guint time,
 867                   gpointer data)
 868 {
 869         GtkTreeSelection *selection;
 870         GtkTreeModel *model_sort, *model;
 871         GtkTreeIter iter;
 872         GtkTreePath *source_row_sort;
 873         GtkTreePath *source_row;
 874
 875         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 876         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 877         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 878
 879         /* Get the unsorted path and model */
 880         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 881         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 882                                                                      source_row_sort);
 883
 884         gtk_tree_set_row_drag_data (selection_data,
 885                                     model,
 886                                     source_row);
 887
 888         gtk_tree_path_free (source_row_sort);
 889         gtk_tree_path_free (source_row);
 890 }
 891
 892
 893 static void
 894 on_progress_changed (ModestMailOperation *mail_op, gpointer user_data)
 895 {
 896         ModestMailOperationQueue *queue;
 897
 898         if (modest_mail_operation_get_status (mail_op) ==
 899             MODEST_MAIL_OPERATION_STATUS_SUCCESS) {
 900                 g_print ("Bien bien");
 901         }
 902         queue = modest_runtime_get_mail_operation_queue ();
 903
 904         modest_mail_operation_queue_remove (queue, mail_op);
 905         g_object_unref (G_OBJECT (mail_op));
 906 }
 907
 908 /*
 909  * This function receives the data set by the "drag-data-get" signal
 910  * handler. This information comes within the #GtkSelectionData. This
 911  * function will manage both the drags of folders of the treeview and
 912  * drags of headers of the header view widget.
 913  */
 914 static void
 915 on_drag_data_received (GtkWidget *widget,
 916                        GdkDragContext *context,
 917                        gint x,
 918                        gint y,
 919                        GtkSelectionData *selection_data,
 920                        guint target_type,
 921                        guint time,
 922                        gpointer data)
 923 {
 924         GtkWidget *source_widget;
 925         GtkTreeModel *model_sort, *dest_model, *source_model;
 926         GtkTreePath *source_row, *dest_row, *child_dest_row;
 927         GtkTreeViewDropPosition pos;
 928         gboolean success = FALSE, delete_source = FALSE;
 929
 930         /* Do not allow further process */
 931         g_signal_stop_emission_by_name (widget, "drag-data-received");
 932
 933         /* Check if the get_data failed */
 934         if (selection_data == NULL || selection_data->length < 0)
 935                 return;
 936
 937         /* Get the action */
 938         if (context->action == GDK_ACTION_MOVE)
 939                 delete_source = TRUE;
 940
 941         /* Get the models */
 942         source_widget = gtk_drag_get_source_widget (context);
 943         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
 944
 945         gtk_tree_get_row_drag_data (selection_data,
 946                                     &source_model,
 947                                     &source_row);
 948
 949         /* Select the destination model */
 950         if (source_widget == widget)
 951                 dest_model = source_model;
 952         else
 953                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 954
 955
 956         /* Get the path to the destination row. Can not call
 957            gtk_tree_view_get_drag_dest_row() because the source row
 958            it's not selected anymore */
 959         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
 960                                            x, y,
 961                                            &dest_row,
 962                                            &pos);
 963
 964         /* Only allow drops IN other rows */
 965         if (!dest_row ||
 966             pos == GTK_TREE_VIEW_DROP_BEFORE ||
 967             pos == GTK_TREE_VIEW_DROP_AFTER)
 968                 goto finish;
 969
 970         /* Get the destination row in the usorted model */
 971         child_dest_row =
 972                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 973                                                                 dest_row);
 974
 975         /* Drags from the header view */
 976         if ((target_type == FOLDER_ROW) && (source_widget != widget)) {
 977                 TnyHeader *header;
 978                 TnyFolder *folder;
 979                 ModestMailOperationQueue *queue;
 980                 ModestMailOperation *mail_op;
 981                 gboolean started;
 982                 GtkTreeIter source_iter, dest_iter;
 983
 984                 /* Get header */
 985                 gtk_tree_model_get_iter (source_model, &source_iter, source_row);
 986                 gtk_tree_model_get (source_model, &source_iter,
 987                                     TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 988                                     &header, -1);
 989
 990                 /* Get Folder */
 991                 gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
 992                 gtk_tree_model_get (dest_model, &dest_iter,
 993                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 994                                     &folder, -1);
 995
 996                 /* Transfer message */
 997                 queue = modest_runtime_get_mail_operation_queue ();
 998                 mail_op = modest_mail_operation_new ();
 999                 started = modest_mail_operation_xfer_msg (mail_op, header,
1000                                                           folder, delete_source);
1001                 if (started) {
1002                         g_signal_connect (G_OBJECT (mail_op), "progress_changed",
1003                                           G_CALLBACK (on_progress_changed), queue);
1004                         modest_mail_operation_queue_add (queue, mail_op);
1005                 } else {
1006                         const GError *error;
1007                         error = modest_mail_operation_get_error (mail_op);
1008                         g_warning ("Error trying to transfer messages: %s\n",
1009                                    error->message);
1010                 }
1011                 g_object_unref (G_OBJECT (mail_op));
1012                 g_object_unref (G_OBJECT (header));
1013                 g_object_unref (G_OBJECT (folder));
1014
1015                 /* FIXME */
1016                 success = TRUE;
1017         } else {
1018                 GtkTreeRowReference *source_row_reference;
1019                 GtkTreeIter parent_iter, iter;
1020                 TnyFolder *folder, *new_folder;
1021                 TnyFolderStore *parent_folder;
1022
1023                 /* Check if the drag is possible */
1024                 if (!gtk_tree_path_compare (source_row, child_dest_row))
1025                         goto out;
1026
1027                 if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
1028                                                            child_dest_row,
1029                                                            selection_data))
1030                         goto out;
1031
1032                 /* Do the mail operation */
1033                 gtk_tree_model_get_iter (source_model, &parent_iter, child_dest_row);
1034                 gtk_tree_model_get_iter (source_model, &iter, source_row);
1035                 gtk_tree_model_get (source_model, &parent_iter,
1036                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1037                                     &parent_folder, -1);
1038                 gtk_tree_model_get (source_model, &iter,
1039                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1040                                     &folder, -1);
1041
1042                 g_signal_emit (G_OBJECT (widget), signals[FOLDER_XFER_SIGNAL], 0,
1043                                folder, parent_folder, delete_source, &new_folder);
1044
1045                 g_object_unref (G_OBJECT (parent_folder));
1046                 g_object_unref (G_OBJECT (folder));
1047
1048                 if (!new_folder)
1049                         goto out;
1050
1051                 /* Get a row reference to the source path because the path
1052                    could change after the insertion. The gtk_drag_finish() is
1053                    not able to delete the source because that, so we have to
1054                    do it manually */
1055                 source_row_reference = gtk_tree_row_reference_new (source_model, source_row);
1056                 gtk_tree_path_free (source_row);
1057
1058                 /* Insert the dragged row as a child of the dest row */
1059                 gtk_tree_path_down (child_dest_row);
1060                 if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (dest_model),
1061                                                            child_dest_row,
1062                                                            selection_data)) {
1063
1064                         {
1065                                 GtkTreeIter iter;
1066
1067                                 gtk_tree_model_get_iter (dest_model, &iter, child_dest_row);
1068                                 gtk_tree_store_set (GTK_TREE_STORE (dest_model), &iter,
1069                                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, new_folder, -1);
1070                                 g_object_unref (G_OBJECT (new_folder));
1071                         }
1072
1073                         source_row = gtk_tree_row_reference_get_path (source_row_reference);
1074
1075                         success = TRUE;
1076                 }
1077                 gtk_tree_row_reference_free (source_row_reference);
1078
1079                 if (folder)
1080                         g_object_unref (G_OBJECT(folder));
1081                 if (parent_folder)
1082                         g_object_unref (G_OBJECT(parent_folder));
1083
1084         }
1085  out:
1086         gtk_tree_path_free (dest_row);
1087         gtk_tree_path_free (child_dest_row);
1088
1089         /* Save the new path, will be used by the
1090            drag-data-delete handler */
1091         if (success && delete_source)
1092                 g_object_set_data (G_OBJECT (source_widget),
1093                                    ROW_REF_DATA_NAME,
1094                                    gtk_tree_path_copy (source_row));
1095
1096         /* Clean dest row */
1097         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
1098                                          NULL,
1099                                          GTK_TREE_VIEW_DROP_BEFORE);
1100
1101  finish:
1102         gtk_drag_finish (context, success, (success && delete_source), time);
1103 }
1104
1105 /*
1106  * We define a "drag-drop" signal handler because we do not want to
1107  * use the default one, because the default one always calls
1108  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1109  * signal handler, because there we have all the information available
1110  * to know if the dnd was a success or not.
1111  */
1112 static gboolean
1113 drag_drop_cb (GtkWidget      *widget,
1114               GdkDragContext *context,
1115               gint            x,
1116               gint            y,
1117               guint           time,
1118               gpointer        user_data)
1119 {
1120         if (!context->targets)
1121                 return FALSE;
1122
1123         /* Request the data from the source. */
1124         gtk_drag_get_data(widget,
1125                           context,
1126                           GDK_POINTER_TO_ATOM (context->targets->data),
1127                           time);
1128
1129     return TRUE;
1130 }
1131
1132 /*
1133  * This function deletes the data that has been dragged from its
1134  * source widget. Since is a function received by the source of the
1135  * drag, this function only deletes rows of the folder view
1136  * widget. The header view widget will need to define its own one.
1137  */
1138 static void
1139 drag_data_delete_cb (GtkWidget      *widget,
1140                      GdkDragContext *context,
1141                      gpointer        user_data)
1142 {
1143         GtkTreePath *source_row;
1144         GtkTreeModel *model_sort, *model;
1145
1146         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1147         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1148         source_row = g_object_steal_data (G_OBJECT (widget), ROW_REF_DATA_NAME);
1149
1150         /* Delete the source row */
1151         gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
1152                                                source_row);
1153
1154         gtk_tree_path_free (source_row);
1155 }
1156
1157 /*
1158  * This function expands a node of a tree view if it's not expanded
1159  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1160  * does that, so that's why they're here.
1161  */
1162 static gint
1163 expand_row_timeout (gpointer data)
1164 {
1165         GtkTreeView *tree_view = data;
1166         GtkTreePath *dest_path = NULL;
1167         GtkTreeViewDropPosition pos;
1168         gboolean result = FALSE;
1169
1170         GDK_THREADS_ENTER ();
1171
1172         gtk_tree_view_get_drag_dest_row (tree_view,
1173                                          &dest_path,
1174                                          &pos);
1175
1176         if (dest_path &&
1177             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1178              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1179                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1180                 gtk_tree_path_free (dest_path);
1181         }
1182         else {
1183                 if (dest_path)
1184                         gtk_tree_path_free (dest_path);
1185
1186                 result = TRUE;
1187         }
1188
1189         GDK_THREADS_LEAVE ();
1190
1191         return result;
1192 }
1193
1194 /*
1195  * This function is called whenever the pointer is moved over a widget
1196  * while dragging some data. It installs a timeout that will expand a
1197  * node of the treeview if not expanded yet. This function also calls
1198  * gdk_drag_status in order to set the suggested action that will be
1199  * used by the "drag-data-received" signal handler to know if we
1200  * should do a move or just a copy of the data.
1201  */
1202 static gboolean
1203 on_drag_motion (GtkWidget      *widget,
1204                 GdkDragContext *context,
1205                 gint            x,
1206                 gint            y,
1207                 guint           time,
1208                 gpointer        user_data)
1209 {
1210         GtkTreeViewDropPosition pos;
1211         GtkTreePath *dest_row;
1212         ModestFolderViewPrivate *priv;
1213         GdkDragAction suggested_action;
1214
1215         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1216
1217         if (priv->timer_expander != 0) {
1218                 g_source_remove (priv->timer_expander);
1219                 priv->timer_expander = 0;
1220         }
1221
1222         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1223                                            x, y,
1224                                            &dest_row,
1225                                            &pos);
1226
1227         if (!dest_row)
1228                 return FALSE;
1229
1230         /* Expand the selected row after 1/2 second */
1231         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1232                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1233                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1234         }
1235         gtk_tree_path_free (dest_row);
1236
1237         /* Select the desired action. By default we pick MOVE */
1238         suggested_action = GDK_ACTION_MOVE;
1239
1240         if (context->actions == GDK_ACTION_COPY)
1241             gdk_drag_status(context, GDK_ACTION_COPY, time);
1242         else if (context->actions == GDK_ACTION_MOVE)
1243             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1244         else if (context->actions & suggested_action)
1245             gdk_drag_status(context, suggested_action, time);
1246         else
1247             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1248
1249         return TRUE;
1250 }
1251
1252
1253 /* Folder view drag types */
1254 const GtkTargetEntry folder_view_drag_types[] =
1255 {
1256         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, FOLDER_ROW },
1257 };
1258
1259 /*
1260  * This function sets the treeview as a source and a target for dnd
1261  * events. It also connects all the requirede signals.
1262  */
1263 static void
1264 setup_drag_and_drop (GtkTreeView *self)
1265 {
1266         /* Set up the folder view as a dnd destination. Set only the
1267            highlight flag, otherwise gtk will have a different
1268            behaviour */
1269         gtk_drag_dest_set (GTK_WIDGET (self),
1270                            GTK_DEST_DEFAULT_HIGHLIGHT,
1271                            folder_view_drag_types,
1272                            G_N_ELEMENTS (folder_view_drag_types),
1273                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1274
1275         gtk_signal_connect(GTK_OBJECT (self),
1276                            "drag_data_received",
1277                            GTK_SIGNAL_FUNC(on_drag_data_received),
1278                            NULL);
1279
1280
1281         /* Set up the treeview as a dnd source */
1282         gtk_drag_source_set (GTK_WIDGET (self),
1283                              GDK_BUTTON1_MASK,
1284                              folder_view_drag_types,
1285                              G_N_ELEMENTS (folder_view_drag_types),
1286                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1287
1288         gtk_signal_connect(GTK_OBJECT (self),
1289                            "drag_data_delete",
1290                            GTK_SIGNAL_FUNC(drag_data_delete_cb),
1291                            NULL);
1292
1293         gtk_signal_connect(GTK_OBJECT (self),
1294                            "drag_motion",
1295                            GTK_SIGNAL_FUNC(on_drag_motion),
1296                            NULL);
1297
1298
1299         gtk_signal_connect(GTK_OBJECT (self),
1300                            "drag_data_get",
1301                            GTK_SIGNAL_FUNC(on_drag_data_get),
1302                            NULL);
1303
1304         gtk_signal_connect(GTK_OBJECT (self),
1305                            "drag_drop",
1306                            GTK_SIGNAL_FUNC(drag_drop_cb),
1307                            NULL);
1308 }