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