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

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <glib/gi18n.h>
  31 #include <string.h>
  32
  33 #include <tny-account-store-view.h>
  34 #include <tny-gtk-account-list-model.h>
  35 #include <tny-gtk-folder-store-tree-model.h>
  36 #include <tny-gtk-header-list-model.h>
  37 #include <tny-folder.h>
  38 #include <tny-account-store.h>
  39 #include <tny-account.h>
  40 #include <tny-folder.h>
  41 #include <tny-camel-folder.h>
  42 #include <tny-simple-list.h>
  43 #include <modest-tny-folder.h>
  44 #include <modest-marshal.h>
  45 #include <modest-icon-names.h>
  46 #include <modest-tny-account-store.h>
  47 #include <modest-text-utils.h>
  48 #include <modest-runtime.h>
  49 #include "modest-folder-view.h"
  50 #include <modest-dnd.h>
  51
  52 /* 'private'/'protected' functions */
  53 static void modest_folder_view_class_init  (ModestFolderViewClass *klass);
  54 static void modest_folder_view_init        (ModestFolderView *obj);
  55 static void modest_folder_view_finalize    (GObject *obj);
  56
  57 static void         tny_account_store_view_init (gpointer g,
  58                                                  gpointer iface_data);
  59
  60 static void         modest_folder_view_set_account_store (TnyAccountStoreView *self,
  61                                                           TnyAccountStore     *account_store);
  62
  63 static gboolean     update_model           (ModestFolderView *self,
  64                                             ModestTnyAccountStore *account_store);
  65
  66 static void         on_selection_changed   (GtkTreeSelection *sel, gpointer data);
  67
  68 static void         on_account_update      (TnyAccountStore *account_store,
  69                                             const gchar *account,
  70                                             gpointer user_data);
  71
  72 static void         on_accounts_reloaded   (TnyAccountStore *store,
  73                                             gpointer user_data);
  74
  75 static gint         cmp_rows               (GtkTreeModel *tree_model,
  76                                             GtkTreeIter *iter1,
  77                                             GtkTreeIter *iter2,
  78                                             gpointer user_data);
  79
  80 /* DnD functions */
  81 static void         on_drag_data_get       (GtkWidget *widget,
  82                                             GdkDragContext *context,
  83                                             GtkSelectionData *selection_data,
  84                                             guint info,
  85                                             guint time,
  86                                             gpointer data);
  87
  88 static void         on_drag_data_received  (GtkWidget *widget,
  89                                             GdkDragContext *context,
  90                                             gint x,
  91                                             gint y,
  92                                             GtkSelectionData *selection_data,
  93                                             guint info,
  94                                             guint time,
  95                                             gpointer data);
  96
  97 static gboolean     on_drag_motion         (GtkWidget      *widget,
  98                                             GdkDragContext *context,
  99                                             gint            x,
 100                                             gint            y,
 101                                             guint           time,
 102                                             gpointer        user_data);
 103
 104 static gint         expand_row_timeout     (gpointer data);
 105
 106 static void         setup_drag_and_drop    (GtkTreeView *self);
 107
 108 enum {
 109         FOLDER_SELECTION_CHANGED_SIGNAL,
 110         LAST_SIGNAL
 111 };
 112
 113 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 114 struct _ModestFolderViewPrivate {
 115         TnyAccountStore     *account_store;
 116         TnyFolder           *cur_folder;
 117         GtkTreeRowReference *cur_row;
 118
 119         gulong               account_update_signal;
 120         gulong               changed_signal;
 121         gulong               accounts_reloaded_signal;
 122
 123         GtkTreeSelection    *cur_selection;
 124         TnyFolderStoreQuery *query;
 125         guint                timer_expander;
 126 };
 127 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 128         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 129                                      MODEST_TYPE_FOLDER_VIEW,   \
 130                                      ModestFolderViewPrivate))
 131 /* globals */
 132 static GObjectClass *parent_class = NULL;
 133
 134 static guint signals[LAST_SIGNAL] = {0};
 135
 136 GType
 137 modest_folder_view_get_type (void)
 138 {
 139         static GType my_type = 0;
 140         if (!my_type) {
 141                 static const GTypeInfo my_info = {
 142                         sizeof(ModestFolderViewClass),
 143                         NULL,           /* base init */
 144                         NULL,           /* base finalize */
 145                         (GClassInitFunc) modest_folder_view_class_init,
 146                         NULL,           /* class finalize */
 147                         NULL,           /* class data */
 148                         sizeof(ModestFolderView),
 149                         1,              /* n_preallocs */
 150                         (GInstanceInitFunc) modest_folder_view_init,
 151                         NULL
 152                 };
 153
 154                 static const GInterfaceInfo tny_account_store_view_info = {
 155                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 156                         NULL,         /* interface_finalize */
 157                         NULL          /* interface_data */
 158                 };
 159
 160
 161                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 162                                                   "ModestFolderView",
 163                                                   &my_info, 0);
 164
 165                 g_type_add_interface_static (my_type,
 166                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 167                                              &tny_account_store_view_info);
 168         }
 169         return my_type;
 170 }
 171
 172 static void
 173 modest_folder_view_class_init (ModestFolderViewClass *klass)
 174 {
 175         GObjectClass *gobject_class;
 176         gobject_class = (GObjectClass*) klass;
 177
 178         parent_class            = g_type_class_peek_parent (klass);
 179         gobject_class->finalize = modest_folder_view_finalize;
 180
 181         g_type_class_add_private (gobject_class,
 182                                   sizeof(ModestFolderViewPrivate));
 183
 184         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 185                 g_signal_new ("folder_selection_changed",
 186                               G_TYPE_FROM_CLASS (gobject_class),
 187                               G_SIGNAL_RUN_FIRST,
 188                               G_STRUCT_OFFSET (ModestFolderViewClass,
 189                                                folder_selection_changed),
 190                               NULL, NULL,
 191                               modest_marshal_VOID__POINTER_BOOLEAN,
 192                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 193 }
 194
 195
 196
 197 static void
 198 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 199                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 200 {
 201         GObject *rendobj;
 202         gchar *fname = NULL;
 203         gint unread;
 204         TnyFolderType type;
 205         TnyFolder *folder = NULL;
 206
 207         g_return_if_fail (column);
 208         g_return_if_fail (tree_model);
 209
 210         gtk_tree_model_get (tree_model, iter,
 211                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 212                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 213                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 214                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 215                             -1);
 216         rendobj = G_OBJECT(renderer);
 217
 218         if (!fname)
 219                 return;
 220
 221         if (folder && type != TNY_FOLDER_TYPE_ROOT) { /* FIXME: tnymail bug? crashes with root folders */
 222                 if (modest_tny_folder_is_local_folder (folder)) {
 223                         TnyFolderType type;
 224                         type = modest_tny_folder_get_local_folder_type (folder);
 225                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 226                                 g_free (fname);
 227                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 228                         }
 229                 }
 230         }/*  else if (folder && type == TNY_FOLDER_TYPE_ROOT) { */
 231 /*              g_warning ("fname: %s", fname); */
 232 /*              /\* FIXME: todo *\/ */
 233 /*      } */
 234
 235         if (unread > 0) {
 236                 gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 237                 g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 238                 g_free (folder_title);
 239         } else
 240                 g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 241
 242         g_free (fname);
 243         if (folder) g_object_unref (G_OBJECT (folder));
 244 }
 245
 246
 247 static GdkPixbuf*
 248 get_cached_icon (const gchar *name)
 249 {
 250         GError *err = NULL;
 251         gpointer pixbuf;
 252         gpointer orig_key;
 253         static GHashTable *icon_cache = NULL;
 254
 255         g_return_val_if_fail (name, NULL);
 256
 257         if (G_UNLIKELY(!icon_cache))
 258                 icon_cache = modest_cache_mgr_get_cache (modest_runtime_get_cache_mgr(),
 259                                                          MODEST_CACHE_MGR_CACHE_TYPE_PIXBUF);
 260
 261         if (!icon_cache || !g_hash_table_lookup_extended (icon_cache, name, &orig_key, &pixbuf)) {
 262                 pixbuf = (gpointer)gdk_pixbuf_new_from_file (name, &err);
 263                 if (!pixbuf) {
 264                         g_printerr ("modest: error in icon factory while loading '%s': %s\n",
 265                                     name, err->message);
 266                         g_error_free (err);
 267                 }
 268                 /* if we cannot find it, we still insert (if we have a cache), so we get the error
 269                  * only once */
 270                 if (icon_cache)
 271                         g_hash_table_insert (icon_cache, g_strdup(name),(gpointer)pixbuf);
 272         }
 273         return GDK_PIXBUF(pixbuf);
 274 }
 275
 276
 277 static void
 278 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 279                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 280 {
 281         GObject *rendobj;
 282         GdkPixbuf *pixbuf;
 283         TnyFolderType type;
 284         gchar *fname = NULL;
 285         gint unread;
 286
 287         rendobj = G_OBJECT(renderer);
 288         gtk_tree_model_get (tree_model, iter,
 289                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 290                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 291                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 292                             -1);
 293         rendobj = G_OBJECT(renderer);
 294
 295         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 296                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 297         }
 298         g_free (fname);
 299
 300         switch (type) {
 301         case TNY_FOLDER_TYPE_ROOT:
 302                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_ACCOUNT);
 303                 break;
 304         case TNY_FOLDER_TYPE_INBOX:
 305                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_INBOX);
 306                 break;
 307         case TNY_FOLDER_TYPE_OUTBOX:
 308                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_OUTBOX);
 309                 break;
 310         case TNY_FOLDER_TYPE_JUNK:
 311                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_JUNK);
 312                 break;
 313         case TNY_FOLDER_TYPE_SENT:
 314                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_SENT);
 315                 break;
 316         case TNY_FOLDER_TYPE_TRASH:
 317                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_TRASH);
 318                 break;
 319         case TNY_FOLDER_TYPE_DRAFTS:
 320                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_DRAFTS);
 321                 break;
 322         case TNY_FOLDER_TYPE_NOTES:
 323                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NOTES);
 324                 break;
 325         case TNY_FOLDER_TYPE_CALENDAR:
 326                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CALENDAR);
 327                 break;
 328         case TNY_FOLDER_TYPE_CONTACTS:
 329                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_CONTACTS);
 330                 break;
 331         case TNY_FOLDER_TYPE_NORMAL:
 332         default:
 333                 pixbuf = get_cached_icon (MODEST_FOLDER_ICON_NORMAL);
 334                 break;
 335         }
 336         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 337 }
 338
 339 static void
 340 modest_folder_view_init (ModestFolderView *obj)
 341 {
 342         ModestFolderViewPrivate *priv;
 343         GtkTreeViewColumn *column;
 344         GtkCellRenderer *renderer;
 345         GtkTreeSelection *sel;
 346
 347         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 348
 349         priv->timer_expander = 0;
 350         priv->account_store  = NULL;
 351         priv->cur_folder     = NULL;
 352         priv->cur_row        = NULL;
 353         priv->query          = NULL;
 354
 355         column = gtk_tree_view_column_new ();
 356         gtk_tree_view_append_column (GTK_TREE_VIEW(obj),column);
 357
 358         renderer = gtk_cell_renderer_pixbuf_new();
 359         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 360         gtk_tree_view_column_set_cell_data_func(column, renderer,
 361                                                 icon_cell_data, NULL, NULL);
 362
 363         renderer = gtk_cell_renderer_text_new();
 364         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 365         gtk_tree_view_column_set_cell_data_func(column, renderer,
 366                                                 text_cell_data, NULL, NULL);
 367
 368         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 369         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 370
 371         gtk_tree_view_column_set_spacing (column, 2);
 372         gtk_tree_view_column_set_resizable (column, TRUE);
 373         gtk_tree_view_column_set_fixed_width (column, TRUE);
 374         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(obj), FALSE);
 375         gtk_tree_view_set_enable_search     (GTK_TREE_VIEW(obj), FALSE);
 376
 377         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 378 }
 379
 380 static void
 381 tny_account_store_view_init (gpointer g, gpointer iface_data)
 382 {
 383         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 384
 385         klass->set_account_store_func = modest_folder_view_set_account_store;
 386
 387         return;
 388 }
 389
 390 static void
 391 modest_folder_view_finalize (GObject *obj)
 392 {
 393         ModestFolderViewPrivate *priv;
 394         GtkTreeSelection    *sel;
 395
 396         g_return_if_fail (obj);
 397
 398         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 399
 400         if (priv->timer_expander != 0) {
 401                 g_source_remove (priv->timer_expander);
 402                 priv->timer_expander = 0;
 403         }
 404
 405         if (priv->account_store) {
 406                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 407                                              priv->account_update_signal);
 408                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 409                                              priv->accounts_reloaded_signal);
 410                 g_object_unref (G_OBJECT(priv->account_store));
 411                 priv->account_store = NULL;
 412         }
 413
 414         if (priv->query) {
 415                 g_object_unref (G_OBJECT (priv->query));
 416                 priv->query = NULL;
 417         }
 418
 419         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 420         if (sel)
 421                 g_signal_handler_disconnect (G_OBJECT(sel), priv->changed_signal);
 422
 423         G_OBJECT_CLASS(parent_class)->finalize (obj);
 424 }
 425
 426
 427 static void
 428 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 429 {
 430         ModestFolderViewPrivate *priv;
 431         TnyDevice *device;
 432
 433         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 434         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 435
 436         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 437         device = tny_account_store_get_device (account_store);
 438
 439         if (G_UNLIKELY (priv->account_store)) {
 440
 441                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 442                                                    priv->account_update_signal))
 443                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 444                                                      priv->account_update_signal);
 445                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 446                                                    priv->accounts_reloaded_signal))
 447                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 448                                                      priv->accounts_reloaded_signal);
 449
 450                 g_object_unref (G_OBJECT (priv->account_store));
 451         }
 452
 453         priv->account_store = g_object_ref (G_OBJECT (account_store));
 454
 455         priv->account_update_signal =
 456                 g_signal_connect (G_OBJECT(account_store), "account_update",
 457                                   G_CALLBACK (on_account_update), self);
 458
 459         priv->accounts_reloaded_signal =
 460                 g_signal_connect (G_OBJECT(account_store), "accounts_reloaded",
 461                                   G_CALLBACK (on_accounts_reloaded), self);
 462
 463         if (!update_model (MODEST_FOLDER_VIEW (self),
 464                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 465                 g_printerr ("modest: failed to update model\n");
 466
 467         g_object_unref (G_OBJECT (device));
 468 }
 469
 470 static void
 471 on_account_update (TnyAccountStore *account_store, const gchar *account,
 472                    gpointer user_data)
 473 {
 474         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 475                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 476                 g_printerr ("modest: failed to update model for changes in '%s'",
 477                             account);
 478 }
 479
 480 static void
 481 on_accounts_reloaded   (TnyAccountStore *account_store,
 482                         gpointer user_data)
 483 {
 484         update_model (MODEST_FOLDER_VIEW (user_data),
 485                       MODEST_TNY_ACCOUNT_STORE(account_store));
 486 }
 487
 488 void
 489 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 490 {
 491         GtkTreeViewColumn *col;
 492
 493         g_return_if_fail (self);
 494
 495         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 496         if (!col) {
 497                 g_printerr ("modest: failed get column for title\n");
 498                 return;
 499         }
 500
 501         gtk_tree_view_column_set_title (col, title);
 502         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 503                                            title != NULL);
 504 }
 505
 506 GtkWidget*
 507 modest_folder_view_new (TnyFolderStoreQuery *query)
 508 {
 509         GObject *self;
 510         ModestFolderViewPrivate *priv;
 511         GtkTreeSelection *sel;
 512
 513         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 514         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 515
 516         priv->query = g_object_ref (query);
 517
 518         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 519         priv->changed_signal = g_signal_connect (sel, "changed",
 520                                                  G_CALLBACK (on_selection_changed), self);
 521         return GTK_WIDGET(self);
 522 }
 523
 524 /* this feels dirty; any other way to expand all the root items? */
 525 static void
 526 expand_root_items (ModestFolderView *self)
 527 {
 528         GtkTreePath *path;
 529         path = gtk_tree_path_new_first ();
 530
 531         /* all folders should have child items, so.. */
 532         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 533                 gtk_tree_path_next (path);
 534
 535         gtk_tree_path_free (path);
 536 }
 537
 538 static gboolean
 539 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 540 {
 541         ModestFolderViewPrivate *priv;
 542
 543         TnyList          *account_list;
 544         GtkTreeModel     *model, *sortable;
 545
 546         g_return_val_if_fail (account_store, FALSE);
 547
 548         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 549
 550         /* Notify that there is no folder selected */
 551         g_signal_emit (G_OBJECT(self),
 552                        signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 553                        NULL, TRUE);
 554
 555         /* FIXME: the local accounts are not shown when the query
 556            selects only the subscribed folders. */
 557 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 558         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 559         account_list = TNY_LIST(model);
 560
 561         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 562                                         account_list,
 563                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 564         if (account_list) {
 565                 sortable = gtk_tree_model_sort_new_with_model (model);
 566                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 567                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 568                                                       GTK_SORT_ASCENDING);
 569                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 570                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 571                                                  cmp_rows, NULL, NULL);
 572
 573                 /* Set new model */
 574                 gtk_tree_view_set_model (GTK_TREE_VIEW(self), sortable);
 575                 expand_root_items (self); /* expand all account folders */
 576                 g_object_unref (account_list);
 577         }
 578
 579         return TRUE;
 580 }
 581
 582
 583 static void
 584 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 585 {
 586         GtkTreeModel            *model_sort, *model;
 587         TnyFolder               *folder = NULL;
 588         GtkTreeIter             iter, iter_sort;
 589         GtkTreePath            *path;
 590         ModestFolderView        *tree_view;
 591         ModestFolderViewPrivate *priv;
 592         gint                    type;
 593
 594         g_return_if_fail (sel);
 595         g_return_if_fail (user_data);
 596
 597         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 598         priv->cur_selection = sel;
 599
 600         /* folder was _un_selected if true */
 601         if (!gtk_tree_selection_get_selected (sel, &model_sort, &iter_sort)) {
 602                 priv->cur_folder = NULL; /* FIXME: need this? */
 603                 gtk_tree_row_reference_free (priv->cur_row);
 604                 priv->cur_row = NULL;
 605                 return;
 606         }
 607
 608         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 609         gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort),
 610                                                         &iter,
 611                                                         &iter_sort);
 612
 613         tree_view = MODEST_FOLDER_VIEW (user_data);
 614
 615         gtk_tree_model_get (model, &iter,
 616                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 617                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 618                             -1);
 619
 620         if (type == TNY_FOLDER_TYPE_ROOT) {
 621                 g_object_unref (folder);
 622                 return;
 623         }
 624
 625         /* Current folder was unselected */
 626         g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 627                        priv->cur_folder, FALSE);
 628
 629         if (priv->cur_row) {
 630 /*              tny_folder_sync (priv->cur_folder, TRUE, NULL); /\* FIXME *\/ */
 631                 gtk_tree_row_reference_free (priv->cur_row);
 632         }
 633
 634         /* New current references */
 635         path = gtk_tree_model_get_path (model_sort, &iter_sort);
 636         priv->cur_folder = folder;
 637         priv->cur_row = gtk_tree_row_reference_new (model_sort, path);
 638
 639         /* Frees */
 640         gtk_tree_path_free (path);
 641         g_object_unref (G_OBJECT (folder));
 642
 643         /* New folder has been selected */
 644         g_signal_emit (G_OBJECT(tree_view),
 645                        signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 646                        0, folder, TRUE);
 647 }
 648
 649 TnyFolder *
 650 modest_folder_view_get_selected (ModestFolderView *self)
 651 {
 652         ModestFolderViewPrivate *priv;
 653
 654         g_return_val_if_fail (self, NULL);
 655
 656         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 657         if (priv->cur_folder)
 658                 g_object_ref (priv->cur_folder);
 659
 660         return priv->cur_folder;
 661 }
 662
 663 /* static gboolean */
 664 /* get_model_iter (ModestFolderView *self,  */
 665 /*              GtkTreeModel **model,  */
 666 /*              GtkTreeIter *iter) */
 667 /* { */
 668 /*      GtkTreeModel *model_sort; */
 669 /*      GtkTreeIter iter_sort; */
 670 /*      GtkTreePath *path; */
 671 /*      ModestFolderViewPrivate *priv; */
 672
 673 /*      priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self); */
 674
 675 /*      if (!priv->cur_folder) */
 676 /*              return FALSE; */
 677
 678 /*      if (!gtk_tree_row_reference_valid (priv->cur_row)) */
 679 /*              return FALSE; */
 680
 681 /*      model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (self)); */
 682 /*      *model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort)); */
 683
 684 /*      /\* Get path to retrieve iter *\/ */
 685 /*      path = gtk_tree_row_reference_get_path (priv->cur_row); */
 686 /*      if (!gtk_tree_model_get_iter (model_sort, &iter_sort, path)) */
 687 /*              return FALSE; */
 688
 689 /*      gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model_sort), */
 690 /*                                                      iter, */
 691 /*                                                      &iter_sort); */
 692 /*      return TRUE; */
 693 /* } */
 694
 695 static gint
 696 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 697           gpointer user_data)
 698 {
 699         gint cmp;
 700         gchar         *name1, *name2;
 701         TnyFolderType type;
 702         TnyFolder     *folder1, *folder2;
 703
 704         gtk_tree_model_get (tree_model, iter1,
 705                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 706                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 707                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 708                             -1);
 709         gtk_tree_model_get (tree_model, iter2,
 710                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 711                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 712                             -1);
 713
 714         /* local_folders should be the last one */
 715         if (type == TNY_FOLDER_TYPE_ROOT) {
 716                 /* the account name is also the name of the root folder
 717                  * in case of local folders */
 718                 if (name1 && strcmp (name1, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 719                         cmp = +1;
 720                 else if (name2 && strcmp (name2, MODEST_LOCAL_FOLDERS_ACCOUNT_NAME) == 0)
 721                         cmp = -1;
 722                 else
 723                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 724         } else
 725                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 726
 727
 728         if (folder1)
 729                 g_object_unref(G_OBJECT(folder1));
 730         if (folder2)
 731                 g_object_unref(G_OBJECT(folder2));
 732
 733         g_free (name1);
 734         g_free (name2);
 735
 736         return cmp;
 737 }
 738
 739 /*****************************************************************************/
 740 /*                        DRAG and DROP stuff                                */
 741 /*****************************************************************************/
 742
 743 /*
 744  * This function fills the #GtkSelectionData with the row and the
 745  * model that has been dragged. It's called when this widget is a
 746  * source for dnd after the event drop happened
 747  */
 748 static void
 749 on_drag_data_get (GtkWidget *widget,
 750                   GdkDragContext *context,
 751                   GtkSelectionData *selection_data,
 752                   guint info,
 753                   guint time,
 754                   gpointer data)
 755 {
 756         GtkTreeSelection *selection;
 757         GtkTreeModel *model_sort, *model;
 758         GtkTreeIter iter;
 759         GtkTreePath *source_row_sort;
 760         GtkTreePath *source_row;
 761
 762         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 763         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 764         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 765
 766         /* Get the unsorted path and model */
 767         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 768         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 769                                                                      source_row_sort);
 770
 771         gtk_tree_set_row_drag_data (selection_data,
 772                                     model,
 773                                     source_row);
 774
 775         gtk_tree_path_free (source_row_sort);
 776         gtk_tree_path_free (source_row);
 777 }
 778
 779 typedef struct _DndHelper {
 780         gboolean delete_source;
 781         GtkWidget *source_widget;
 782         GtkWidget *dest_widget;
 783         GtkTreePath *source_row;
 784         GdkDragContext *context;
 785         guint time;
 786 } DndHelper;
 787
 788
 789 /*
 790  * This function saves the source row in the source widget, will be
 791  * used by the drag-data-delete handler to remove the source row
 792  */
 793 static void
 794 save_and_clean (DndHelper *helper,
 795                 gboolean success)
 796 {
 797         /* Save row data */
 798         if (success && helper->delete_source)
 799                 g_object_set_data (G_OBJECT (helper->source_widget),
 800                                    ROW_REF_DATA_NAME,
 801                                    gtk_tree_path_copy (helper->source_row));
 802
 803         /* Clean dest row */
 804         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (helper->dest_widget),
 805                                          NULL,
 806                                          GTK_TREE_VIEW_DROP_BEFORE);
 807
 808 }
 809
 810 /*
 811  * This function is the callback of the
 812  * modest_mail_operation_xfer_msg() call. We check here if the message
 813  * was correctly asynchronously transfered
 814  */
 815 static void
 816 on_progress_changed (ModestMailOperation *mail_op, gpointer user_data)
 817 {
 818         ModestMailOperationQueue *queue;
 819         gboolean success = FALSE;
 820         DndHelper *helper;
 821
 822         helper = (DndHelper *) user_data;
 823
 824         if (modest_mail_operation_get_status (mail_op) ==
 825             MODEST_MAIL_OPERATION_STATUS_SUCCESS) {
 826                 success = TRUE;
 827         } else {
 828                 const GError *error;
 829                 error = modest_mail_operation_get_error (mail_op);
 830                 g_warning ("Error transferring messages: %s\n", error->message);
 831         }
 832
 833         /* Remove the mail operation */
 834         queue = modest_runtime_get_mail_operation_queue ();
 835         modest_mail_operation_queue_remove (queue, mail_op);
 836         g_object_unref (G_OBJECT (mail_op));
 837
 838         /* Save and clean */
 839         save_and_clean (helper, success);
 840
 841         /* Notify the drag source */
 842         gtk_drag_finish (helper->context, success, (success && helper->delete_source), helper->time);
 843
 844         /* Free the helper */
 845         g_slice_free (DndHelper, helper);
 846 }
 847
 848 /*
 849  * This function is used by drag_data_received_cb to manage drag and
 850  * drop of a header, i.e, and drag from the header view to the folder
 851  * view.
 852  */
 853 static void
 854 drag_and_drop_from_header_view (GtkTreeModel *source_model,
 855                                 GtkTreeModel *dest_model,
 856                                 GtkTreePath  *dest_row,
 857                                 DndHelper    *helper)
 858 {
 859         TnyHeader *header;
 860         TnyFolder *folder;
 861         ModestMailOperationQueue *queue;
 862         ModestMailOperation *mail_op;
 863         gboolean started;
 864         GtkTreeIter source_iter, dest_iter;
 865
 866         /* Get header */
 867         gtk_tree_model_get_iter (source_model, &source_iter, helper->source_row);
 868         gtk_tree_model_get (source_model, &source_iter,
 869                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 870                             &header, -1);
 871
 872         /* Get Folder */
 873         gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
 874         gtk_tree_model_get (dest_model, &dest_iter,
 875                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 876                             &folder, -1);
 877
 878         /* Transfer message */
 879         queue = modest_runtime_get_mail_operation_queue ();
 880         mail_op = modest_mail_operation_new ();
 881         started = modest_mail_operation_xfer_msg (mail_op, header,
 882                                                   folder, helper->delete_source);
 883         if (started) {
 884                 g_signal_connect (G_OBJECT (mail_op), "progress_changed",
 885                                   G_CALLBACK (on_progress_changed), helper);
 886                 modest_mail_operation_queue_add (queue, mail_op);
 887         } else {
 888                 const GError *error;
 889                 error = modest_mail_operation_get_error (mail_op);
 890                 if (error)
 891                         g_warning ("Error trying to transfer messages: %s\n",
 892                                    error->message);
 893
 894                 g_slice_free (DndHelper, helper);
 895         }
 896
 897         /* Frees */
 898         g_object_unref (G_OBJECT (mail_op));
 899         g_object_unref (G_OBJECT (header));
 900         g_object_unref (G_OBJECT (folder));
 901 }
 902
 903 /*
 904  * This function is used by drag_data_received_cb to manage drag and
 905  * drop of a folder, i.e, and drag from the folder view to the same
 906  * folder view.
 907  */
 908 static void
 909 drag_and_drop_from_folder_view (GtkTreeModel     *source_model,
 910                                 GtkTreeModel     *dest_model,
 911                                 GtkTreePath      *dest_row,
 912                                 GtkSelectionData *selection_data,
 913                                 DndHelper        *helper)
 914 {
 915         ModestMailOperation *mail_op;
 916         const GError *error;
 917         GtkTreeRowReference *source_row_reference;
 918         GtkTreeIter parent_iter, iter;
 919         TnyFolder *folder, *new_folder;
 920         TnyFolderStore *parent_folder;
 921         gboolean success = FALSE;
 922
 923         /* Check if the drag is possible */
 924         if (!gtk_tree_path_compare (helper->source_row, dest_row))
 925                 goto out;
 926
 927         if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
 928                                                    dest_row,
 929                                                    selection_data))
 930                 goto out;
 931
 932         /* Get data */
 933         gtk_tree_model_get_iter (source_model, &parent_iter, dest_row);
 934         gtk_tree_model_get_iter (source_model, &iter, helper->source_row);
 935         gtk_tree_model_get (source_model, &parent_iter,
 936                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 937                             &parent_folder, -1);
 938         gtk_tree_model_get (source_model, &iter,
 939                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 940                             &folder, -1);
 941
 942         /* Do the mail operation */
 943         mail_op = modest_mail_operation_new ();
 944         new_folder = modest_mail_operation_xfer_folder (mail_op, folder, parent_folder,
 945                                                         helper->delete_source);
 946
 947         g_object_unref (G_OBJECT (parent_folder));
 948         g_object_unref (G_OBJECT (folder));
 949
 950         error = modest_mail_operation_get_error (mail_op);
 951         if (error) {
 952                 g_warning ("Error transferring folder: %s\n", error->message);
 953                 g_object_unref (G_OBJECT (mail_op));
 954                 goto out;
 955         }
 956         g_object_unref (G_OBJECT (mail_op));
 957
 958         /* Get a row reference to the source path because the path
 959            could change after the insertion. The gtk_drag_finish() is
 960            not able to delete the source because that, so we have to
 961            do it manually */
 962         source_row_reference = gtk_tree_row_reference_new (source_model, helper->source_row);
 963         gtk_tree_path_free (helper->source_row);
 964
 965         /* Insert the dragged row as a child of the dest row */
 966         gtk_tree_path_down (dest_row);
 967         if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (dest_model),
 968                                                    dest_row,
 969                                                    selection_data)) {
 970
 971                 GtkTreeIter iter;
 972
 973                 /* Set the newly created folder as the instance in the row */
 974                 gtk_tree_model_get_iter (dest_model, &iter, dest_row);
 975                 gtk_tree_store_set (GTK_TREE_STORE (dest_model), &iter,
 976                                     TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 977                                     new_folder, -1);
 978                 g_object_unref (G_OBJECT (new_folder));
 979
 980                 helper->source_row = gtk_tree_row_reference_get_path (source_row_reference);
 981
 982                 success = TRUE;
 983         }
 984         gtk_tree_row_reference_free (source_row_reference);
 985
 986         /* Save and clean */
 987         save_and_clean (helper, success);
 988
 989  out:
 990         gtk_drag_finish (helper->context, success, (success && helper->delete_source), helper->time);
 991 }
 992
 993 /*
 994  * This function receives the data set by the "drag-data-get" signal
 995  * handler. This information comes within the #GtkSelectionData. This
 996  * function will manage both the drags of folders of the treeview and
 997  * drags of headers of the header view widget.
 998  */
 999 static void
1000 on_drag_data_received (GtkWidget *widget,
1001                        GdkDragContext *context,
1002                        gint x,
1003                        gint y,
1004                        GtkSelectionData *selection_data,
1005                        guint target_type,
1006                        guint time,
1007                        gpointer data)
1008 {
1009         GtkWidget *source_widget;
1010         GtkTreeModel *model_sort, *dest_model, *source_model;
1011         GtkTreePath *source_row, *dest_row, *child_dest_row;
1012         GtkTreeViewDropPosition pos;
1013         gboolean success = FALSE, delete_source = FALSE;
1014         DndHelper *helper;
1015
1016         /* Do not allow further process */
1017         g_signal_stop_emission_by_name (widget, "drag-data-received");
1018
1019         /* Get the action */
1020         if (context->action == GDK_ACTION_MOVE)
1021                 delete_source = TRUE;
1022
1023         /* Check if the get_data failed */
1024         if (selection_data == NULL || selection_data->length < 0)
1025                 gtk_drag_finish (context, success, (success && delete_source), time);
1026
1027         /* Get the models */
1028         source_widget = gtk_drag_get_source_widget (context);
1029         gtk_tree_get_row_drag_data (selection_data,
1030                                     &source_model,
1031                                     &source_row);
1032
1033         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1034         /* Select the destination model */
1035         if (source_widget == widget) {
1036                 dest_model = source_model;
1037         } else {
1038                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1039         }
1040
1041         /* Get the path to the destination row. Can not call
1042            gtk_tree_view_get_drag_dest_row() because the source row
1043            is not selected anymore */
1044         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), x, y,
1045                                            &dest_row, &pos);
1046
1047         /* Only allow drops IN other rows */
1048         if (!dest_row || pos == GTK_TREE_VIEW_DROP_BEFORE || pos == GTK_TREE_VIEW_DROP_AFTER)
1049                 gtk_drag_finish (context, success, (success && delete_source), time);
1050
1051         /* Create the helper */
1052         helper = g_slice_new0 (DndHelper);
1053         helper->delete_source = delete_source;
1054         helper->source_widget = source_widget;
1055         helper->dest_widget = widget;
1056         helper->source_row = source_row;
1057         helper->context = context;
1058         helper->time = time;
1059
1060         /* Get path from the unsorted model */
1061         child_dest_row =
1062                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
1063                                                                 dest_row);
1064         gtk_tree_path_free (dest_row);
1065
1066         /* Drags from the header view */
1067         if (source_widget != widget) {
1068
1069                 drag_and_drop_from_header_view (source_model,
1070                                                 dest_model,
1071                                                 child_dest_row,
1072                                                 helper);
1073         } else {
1074
1075
1076                 drag_and_drop_from_folder_view (source_model,
1077                                                 dest_model,
1078                                                 child_dest_row,
1079                                                 selection_data,
1080                                                 helper);
1081         }
1082         gtk_tree_path_free (child_dest_row);
1083 }
1084
1085 /*
1086  * We define a "drag-drop" signal handler because we do not want to
1087  * use the default one, because the default one always calls
1088  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1089  * signal handler, because there we have all the information available
1090  * to know if the dnd was a success or not.
1091  */
1092 static gboolean
1093 drag_drop_cb (GtkWidget      *widget,
1094               GdkDragContext *context,
1095               gint            x,
1096               gint            y,
1097               guint           time,
1098               gpointer        user_data)
1099 {
1100         gpointer target;
1101
1102         if (!context->targets)
1103                 return FALSE;
1104
1105         /* Check if we're dragging a folder row */
1106         target = gtk_drag_dest_find_target (widget, context, NULL);
1107
1108         /* Request the data from the source. */
1109         gtk_drag_get_data(widget, context, target, time);
1110
1111     return TRUE;
1112 }
1113
1114 /*
1115  * This function deletes the data that has been dragged from its
1116  * source widget. Since is a function received by the source of the
1117  * drag, this function only deletes rows of the folder view
1118  * widget. The header view widget will need to define its own one.
1119  */
1120 static void
1121 drag_data_delete_cb (GtkWidget      *widget,
1122                      GdkDragContext *context,
1123                      gpointer        user_data)
1124 {
1125         GtkTreePath *source_row;
1126         GtkTreeModel *model_sort, *model;
1127
1128         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1129         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1130         source_row = g_object_steal_data (G_OBJECT (widget), ROW_REF_DATA_NAME);
1131
1132         /* Delete the source row */
1133         gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
1134                                                source_row);
1135
1136         gtk_tree_path_free (source_row);
1137 }
1138
1139 /*
1140  * This function expands a node of a tree view if it's not expanded
1141  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1142  * does that, so that's why they're here.
1143  */
1144 static gint
1145 expand_row_timeout (gpointer data)
1146 {
1147         GtkTreeView *tree_view = data;
1148         GtkTreePath *dest_path = NULL;
1149         GtkTreeViewDropPosition pos;
1150         gboolean result = FALSE;
1151
1152         GDK_THREADS_ENTER ();
1153
1154         gtk_tree_view_get_drag_dest_row (tree_view,
1155                                          &dest_path,
1156                                          &pos);
1157
1158         if (dest_path &&
1159             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1160              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1161                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1162                 gtk_tree_path_free (dest_path);
1163         }
1164         else {
1165                 if (dest_path)
1166                         gtk_tree_path_free (dest_path);
1167
1168                 result = TRUE;
1169         }
1170
1171         GDK_THREADS_LEAVE ();
1172
1173         return result;
1174 }
1175
1176 /*
1177  * This function is called whenever the pointer is moved over a widget
1178  * while dragging some data. It installs a timeout that will expand a
1179  * node of the treeview if not expanded yet. This function also calls
1180  * gdk_drag_status in order to set the suggested action that will be
1181  * used by the "drag-data-received" signal handler to know if we
1182  * should do a move or just a copy of the data.
1183  */
1184 static gboolean
1185 on_drag_motion (GtkWidget      *widget,
1186                 GdkDragContext *context,
1187                 gint            x,
1188                 gint            y,
1189                 guint           time,
1190                 gpointer        user_data)
1191 {
1192         GtkTreeViewDropPosition pos;
1193         GtkTreePath *dest_row;
1194         ModestFolderViewPrivate *priv;
1195         GdkDragAction suggested_action;
1196
1197         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1198
1199         if (priv->timer_expander != 0) {
1200                 g_source_remove (priv->timer_expander);
1201                 priv->timer_expander = 0;
1202         }
1203
1204         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1205                                            x, y,
1206                                            &dest_row,
1207                                            &pos);
1208
1209         if (!dest_row)
1210                 return FALSE;
1211
1212         /* Expand the selected row after 1/2 second */
1213         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1214                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1215                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1216         }
1217         gtk_tree_path_free (dest_row);
1218
1219         /* Select the desired action. By default we pick MOVE */
1220         suggested_action = GDK_ACTION_MOVE;
1221
1222         if (context->actions == GDK_ACTION_COPY)
1223             gdk_drag_status(context, GDK_ACTION_COPY, time);
1224         else if (context->actions == GDK_ACTION_MOVE)
1225             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1226         else if (context->actions & suggested_action)
1227             gdk_drag_status(context, suggested_action, time);
1228         else
1229             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1230
1231         return TRUE;
1232 }
1233
1234
1235 /* Folder view drag types */
1236 const GtkTargetEntry folder_view_drag_types[] =
1237 {
1238         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, FOLDER_ROW },
1239         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP, HEADER_ROW }
1240 };
1241
1242 /*
1243  * This function sets the treeview as a source and a target for dnd
1244  * events. It also connects all the requirede signals.
1245  */
1246 static void
1247 setup_drag_and_drop (GtkTreeView *self)
1248 {
1249         /* Set up the folder view as a dnd destination. Set only the
1250            highlight flag, otherwise gtk will have a different
1251            behaviour */
1252         gtk_drag_dest_set (GTK_WIDGET (self),
1253                            GTK_DEST_DEFAULT_HIGHLIGHT,
1254                            folder_view_drag_types,
1255                            G_N_ELEMENTS (folder_view_drag_types),
1256                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1257
1258         gtk_signal_connect(GTK_OBJECT (self),
1259                            "drag_data_received",
1260                            GTK_SIGNAL_FUNC(on_drag_data_received),
1261                            NULL);
1262
1263
1264         /* Set up the treeview as a dnd source */
1265         gtk_drag_source_set (GTK_WIDGET (self),
1266                              GDK_BUTTON1_MASK,
1267                              folder_view_drag_types,
1268                              G_N_ELEMENTS (folder_view_drag_types),
1269                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1270
1271         gtk_signal_connect(GTK_OBJECT (self),
1272                            "drag_data_delete",
1273                            GTK_SIGNAL_FUNC(drag_data_delete_cb),
1274                            NULL);
1275
1276         gtk_signal_connect(GTK_OBJECT (self),
1277                            "drag_motion",
1278                            GTK_SIGNAL_FUNC(on_drag_motion),
1279                            NULL);
1280
1281
1282         gtk_signal_connect(GTK_OBJECT (self),
1283                            "drag_data_get",
1284                            GTK_SIGNAL_FUNC(on_drag_data_get),
1285                            NULL);
1286
1287         gtk_signal_connect(GTK_OBJECT (self),
1288                            "drag_drop",
1289                            GTK_SIGNAL_FUNC(drag_drop_cb),
1290                            NULL);
1291 }