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 #include <gdk/gdkkeysyms.h>
  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 static gboolean     filter_row             (GtkTreeModel *model,
  82                                             GtkTreeIter *iter,
  83                                             gpointer data);
  84
  85 static gboolean     on_key_pressed         (GtkWidget *self,
  86                                             GdkEventKey *event,
  87                                             gpointer user_data);
  88
  89 static void         on_configuration_key_changed         (ModestConf* conf,
  90                                                           const gchar *key,
  91                                                           ModestConfEvent event,
  92                                                           ModestFolderView *self);
  93
  94 /* DnD functions */
  95 static void         on_drag_data_get       (GtkWidget *widget,
  96                                             GdkDragContext *context,
  97                                             GtkSelectionData *selection_data,
  98                                             guint info,
  99                                             guint time,
 100                                             gpointer data);
 101
 102 static void         on_drag_data_received  (GtkWidget *widget,
 103                                             GdkDragContext *context,
 104                                             gint x,
 105                                             gint y,
 106                                             GtkSelectionData *selection_data,
 107                                             guint info,
 108                                             guint time,
 109                                             gpointer data);
 110
 111 static gboolean     on_drag_motion         (GtkWidget      *widget,
 112                                             GdkDragContext *context,
 113                                             gint            x,
 114                                             gint            y,
 115                                             guint           time,
 116                                             gpointer        user_data);
 117
 118 static gint         expand_row_timeout     (gpointer data);
 119
 120 static void         setup_drag_and_drop    (GtkTreeView *self);
 121
 122 enum {
 123         FOLDER_SELECTION_CHANGED_SIGNAL,
 124         FOLDER_DISPLAY_NAME_CHANGED_SIGNAL,
 125         LAST_SIGNAL
 126 };
 127
 128 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 129 struct _ModestFolderViewPrivate {
 130         TnyAccountStore      *account_store;
 131         TnyFolderStore       *cur_folder_store;
 132
 133         gulong                account_update_signal;
 134         gulong                changed_signal;
 135         gulong                accounts_reloaded_signal;
 136
 137         GtkTreeSelection     *cur_selection;
 138         TnyFolderStoreQuery  *query;
 139         guint                 timer_expander;
 140
 141         gchar                *local_account_name;
 142         ModestFolderViewStyle style;
 143 };
 144 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 145         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 146                                      MODEST_TYPE_FOLDER_VIEW,   \
 147                                      ModestFolderViewPrivate))
 148 /* globals */
 149 static GObjectClass *parent_class = NULL;
 150
 151 static guint signals[LAST_SIGNAL] = {0};
 152
 153 GType
 154 modest_folder_view_get_type (void)
 155 {
 156         static GType my_type = 0;
 157         if (!my_type) {
 158                 static const GTypeInfo my_info = {
 159                         sizeof(ModestFolderViewClass),
 160                         NULL,           /* base init */
 161                         NULL,           /* base finalize */
 162                         (GClassInitFunc) modest_folder_view_class_init,
 163                         NULL,           /* class finalize */
 164                         NULL,           /* class data */
 165                         sizeof(ModestFolderView),
 166                         1,              /* n_preallocs */
 167                         (GInstanceInitFunc) modest_folder_view_init,
 168                         NULL
 169                 };
 170
 171                 static const GInterfaceInfo tny_account_store_view_info = {
 172                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 173                         NULL,         /* interface_finalize */
 174                         NULL          /* interface_data */
 175                 };
 176
 177
 178                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 179                                                   "ModestFolderView",
 180                                                   &my_info, 0);
 181
 182                 g_type_add_interface_static (my_type,
 183                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 184                                              &tny_account_store_view_info);
 185         }
 186         return my_type;
 187 }
 188
 189 static void
 190 modest_folder_view_class_init (ModestFolderViewClass *klass)
 191 {
 192         GObjectClass *gobject_class;
 193         gobject_class = (GObjectClass*) klass;
 194
 195         parent_class            = g_type_class_peek_parent (klass);
 196         gobject_class->finalize = modest_folder_view_finalize;
 197
 198         g_type_class_add_private (gobject_class,
 199                                   sizeof(ModestFolderViewPrivate));
 200
 201         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 202                 g_signal_new ("folder_selection_changed",
 203                               G_TYPE_FROM_CLASS (gobject_class),
 204                               G_SIGNAL_RUN_FIRST,
 205                               G_STRUCT_OFFSET (ModestFolderViewClass,
 206                                                folder_selection_changed),
 207                               NULL, NULL,
 208                               modest_marshal_VOID__POINTER_BOOLEAN,
 209                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 210
 211         /*
 212          * This signal is emitted whenever the currently selected
 213          * folder display name is computed. Note that the name could
 214          * be different to the folder name, because we could append
 215          * the unread messages count to the folder name to build the
 216          * folder display name
 217          */
 218         signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL] =
 219                 g_signal_new ("folder-display-name-changed",
 220                               G_TYPE_FROM_CLASS (gobject_class),
 221                               G_SIGNAL_RUN_FIRST,
 222                               G_STRUCT_OFFSET (ModestFolderViewClass,
 223                                                folder_display_name_changed),
 224                               NULL, NULL,
 225                               g_cclosure_marshal_VOID__STRING,
 226                               G_TYPE_NONE, 1, G_TYPE_STRING);
 227 }
 228
 229
 230
 231 static void
 232 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 233                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 234 {
 235         ModestFolderViewPrivate *priv;
 236         GObject *rendobj;
 237         gchar *fname = NULL;
 238         gint unread, all;
 239         TnyFolderType type;
 240         GObject *instance = NULL;
 241
 242         g_return_if_fail (column);
 243         g_return_if_fail (tree_model);
 244
 245         gtk_tree_model_get (tree_model, iter,
 246                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 247                             TNY_GTK_FOLDER_STORE_TREE_MODEL_ALL_COLUMN, &all,
 248                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 249                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 250                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 251                             -1);
 252         rendobj = G_OBJECT(renderer);
 253
 254         if (!fname)
 255                 return;
 256
 257         if (!instance) {
 258                 g_free (fname);
 259                 return;
 260         }
 261
 262
 263         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE (data);
 264
 265         if (type != TNY_FOLDER_TYPE_ROOT) {
 266                 gint number;
 267
 268                 if (modest_tny_folder_is_local_folder (TNY_FOLDER (instance))) {
 269                         TnyFolderType type;
 270                         type = modest_tny_folder_get_local_folder_type (TNY_FOLDER (instance));
 271                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 272                                 g_free (fname);
 273                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 274                         }
 275                 }
 276
 277                 /* Select the number to show */
 278                 if ((type == TNY_FOLDER_TYPE_DRAFTS) || (type == TNY_FOLDER_TYPE_OUTBOX))
 279                         number = all;
 280                 else
 281                         number = unread;
 282
 283                 /* Use bold font style if there are unread messages */
 284                 if (unread > 0) {
 285                         gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 286                         g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 287                         if (G_OBJECT (priv->cur_folder_store) == instance)
 288                                 g_signal_emit (G_OBJECT(data),
 289                                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 290                                                folder_title);
 291                         g_free (folder_title);
 292                 } else {
 293                         g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 294                         if (G_OBJECT (priv->cur_folder_store) == instance)
 295                                 g_signal_emit (G_OBJECT(data),
 296                                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 297                                                fname);
 298                 }
 299
 300         } else {
 301                 const gchar *account_name = NULL;
 302                 const gchar *account_id = NULL;
 303
 304                 /* If it's a server account */
 305                 account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 306                 if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 307                         account_name = priv->local_account_name;
 308                 } else {
 309                         if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID)) {
 310                                 /* TODO: get MMC card name */
 311                         } else {
 312                                 account_name = fname;
 313                         }
 314                 }
 315
 316                 /* Notify display name observers */
 317                 if (G_OBJECT (priv->cur_folder_store) == instance)
 318                         g_signal_emit (G_OBJECT(data),
 319                                        signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 320                                        account_name);
 321
 322                 /* Use bold font style */
 323                 g_object_set (rendobj,"text", account_name, "weight", 800, NULL);
 324         }
 325
 326         g_object_unref (G_OBJECT (instance));
 327         g_free (fname);
 328 }
 329
 330
 331
 332 static void
 333 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 334                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 335 {
 336         GObject *rendobj, *instance;
 337         GdkPixbuf *pixbuf;
 338         TnyFolderType type;
 339         gchar *fname = NULL;
 340         const gchar *account_id = NULL;
 341         gint unread;
 342
 343         rendobj = G_OBJECT(renderer);
 344         gtk_tree_model_get (tree_model, iter,
 345                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 346                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 347                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 348                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 349                             -1);
 350
 351         if (!fname)
 352                 return;
 353
 354         if (!instance) {
 355                 g_free (fname);
 356                 return;
 357         }
 358
 359         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 360                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 361         }
 362
 363         switch (type) {
 364         case TNY_FOLDER_TYPE_ROOT:
 365                 account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 366                 if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 367                         pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_LOCAL_FOLDERS);
 368                 } else {
 369                         if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID))
 370                                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_MMC);
 371                         else
 372                                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_ACCOUNT);
 373                 }
 374                 break;
 375         case TNY_FOLDER_TYPE_INBOX:
 376                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_INBOX);
 377                 break;
 378         case TNY_FOLDER_TYPE_OUTBOX:
 379                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_OUTBOX);
 380                 break;
 381         case TNY_FOLDER_TYPE_JUNK:
 382                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_JUNK);
 383                 break;
 384         case TNY_FOLDER_TYPE_SENT:
 385                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_SENT);
 386                 break;
 387         case TNY_FOLDER_TYPE_TRASH:
 388                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_TRASH);
 389                 break;
 390         case TNY_FOLDER_TYPE_DRAFTS:
 391                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_DRAFTS);
 392                 break;
 393         case TNY_FOLDER_TYPE_NORMAL:
 394         default:
 395                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_NORMAL);
 396                 break;
 397         }
 398         g_object_unref (G_OBJECT (instance));
 399         g_free (fname);
 400
 401         /* Set pixbuf */
 402         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 403 }
 404
 405 static void
 406 add_columns (GtkWidget *treeview)
 407 {
 408         GtkTreeViewColumn *column;
 409         GtkCellRenderer *renderer;
 410         GtkTreeSelection *sel;
 411
 412         /* Create column */
 413         column = gtk_tree_view_column_new ();
 414
 415         /* Set icon and text render function */
 416         renderer = gtk_cell_renderer_pixbuf_new();
 417         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 418         gtk_tree_view_column_set_cell_data_func(column, renderer,
 419                                                 icon_cell_data, treeview, NULL);
 420
 421         renderer = gtk_cell_renderer_text_new();
 422         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 423         gtk_tree_view_column_set_cell_data_func(column, renderer,
 424                                                 text_cell_data, treeview, NULL);
 425
 426         /* Set selection mode */
 427         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(treeview));
 428         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 429
 430         /* Set treeview appearance */
 431         gtk_tree_view_column_set_spacing (column, 2);
 432         gtk_tree_view_column_set_resizable (column, TRUE);
 433         gtk_tree_view_column_set_fixed_width (column, TRUE);
 434         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(treeview), FALSE);
 435         gtk_tree_view_set_enable_search (GTK_TREE_VIEW(treeview), FALSE);
 436
 437         /* Add column */
 438         gtk_tree_view_append_column (GTK_TREE_VIEW(treeview),column);
 439 }
 440
 441 static void
 442 modest_folder_view_init (ModestFolderView *obj)
 443 {
 444         ModestFolderViewPrivate *priv;
 445         ModestConf *conf;
 446
 447         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 448
 449         priv->timer_expander = 0;
 450         priv->account_store  = NULL;
 451         priv->cur_folder_store     = NULL;
 452         priv->query          = NULL;
 453         priv->style          = MODEST_FOLDER_VIEW_STYLE_SHOW_ALL;
 454
 455         /* Initialize the local account name */
 456         conf = modest_runtime_get_conf();
 457         priv->local_account_name = modest_conf_get_string (conf, MODEST_CONF_DEVICE_NAME, NULL);
 458
 459         /* Build treeview */
 460         add_columns (GTK_WIDGET (obj));
 461
 462         /* Setup drag and drop */
 463         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 464
 465         /* Connect signals */
 466         g_signal_connect (G_OBJECT (obj),
 467                           "key-press-event",
 468                           G_CALLBACK (on_key_pressed), NULL);
 469
 470         /*
 471          * Track changes in the local account name (in the device it
 472          * will be the device name)
 473          */
 474         g_signal_connect (G_OBJECT(conf),
 475                           "key_changed",
 476                           G_CALLBACK(on_configuration_key_changed), obj);
 477
 478 }
 479
 480 static void
 481 tny_account_store_view_init (gpointer g, gpointer iface_data)
 482 {
 483         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 484
 485         klass->set_account_store_func = modest_folder_view_set_account_store;
 486
 487         return;
 488 }
 489
 490 static void
 491 modest_folder_view_finalize (GObject *obj)
 492 {
 493         ModestFolderViewPrivate *priv;
 494         GtkTreeSelection    *sel;
 495
 496         g_return_if_fail (obj);
 497
 498         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 499
 500         if (priv->timer_expander != 0) {
 501                 g_source_remove (priv->timer_expander);
 502                 priv->timer_expander = 0;
 503         }
 504
 505         if (priv->account_store) {
 506                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 507                                              priv->account_update_signal);
 508                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 509                                              priv->accounts_reloaded_signal);
 510                 g_object_unref (G_OBJECT(priv->account_store));
 511                 priv->account_store = NULL;
 512         }
 513
 514         if (priv->query) {
 515                 g_object_unref (G_OBJECT (priv->query));
 516                 priv->query = NULL;
 517         }
 518
 519         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 520         if (sel)
 521                 g_signal_handler_disconnect (G_OBJECT(sel), priv->changed_signal);
 522
 523         g_free (priv->local_account_name);
 524
 525         G_OBJECT_CLASS(parent_class)->finalize (obj);
 526 }
 527
 528
 529 static void
 530 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 531 {
 532         ModestFolderViewPrivate *priv;
 533         TnyDevice *device;
 534
 535         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 536         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 537
 538         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 539         device = tny_account_store_get_device (account_store);
 540
 541         if (G_UNLIKELY (priv->account_store)) {
 542
 543                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 544                                                    priv->account_update_signal))
 545                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 546                                                      priv->account_update_signal);
 547                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 548                                                    priv->accounts_reloaded_signal))
 549                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 550                                                      priv->accounts_reloaded_signal);
 551
 552                 g_object_unref (G_OBJECT (priv->account_store));
 553         }
 554
 555         priv->account_store = g_object_ref (G_OBJECT (account_store));
 556
 557         priv->account_update_signal =
 558                 g_signal_connect (G_OBJECT(account_store), "account_update",
 559                                   G_CALLBACK (on_account_update), self);
 560
 561         priv->accounts_reloaded_signal =
 562                 g_signal_connect (G_OBJECT(account_store), "accounts_reloaded",
 563                                   G_CALLBACK (on_accounts_reloaded), self);
 564
 565         if (!update_model (MODEST_FOLDER_VIEW (self),
 566                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 567                 g_printerr ("modest: failed to update model\n");
 568
 569         g_object_unref (G_OBJECT (device));
 570 }
 571
 572 static void
 573 on_account_update (TnyAccountStore *account_store, const gchar *account,
 574                    gpointer user_data)
 575 {
 576         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 577                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 578                 g_printerr ("modest: failed to update model for changes in '%s'",
 579                             account);
 580 }
 581
 582 static void
 583 on_accounts_reloaded   (TnyAccountStore *account_store,
 584                         gpointer user_data)
 585 {
 586         update_model (MODEST_FOLDER_VIEW (user_data),
 587                       MODEST_TNY_ACCOUNT_STORE(account_store));
 588 }
 589
 590 void
 591 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 592 {
 593         GtkTreeViewColumn *col;
 594
 595         g_return_if_fail (self);
 596
 597         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 598         if (!col) {
 599                 g_printerr ("modest: failed get column for title\n");
 600                 return;
 601         }
 602
 603         gtk_tree_view_column_set_title (col, title);
 604         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 605                                            title != NULL);
 606 }
 607
 608 GtkWidget*
 609 modest_folder_view_new (TnyFolderStoreQuery *query)
 610 {
 611         GObject *self;
 612         ModestFolderViewPrivate *priv;
 613         GtkTreeSelection *sel;
 614
 615         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 616         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 617
 618         if (query)
 619                 priv->query = g_object_ref (query);
 620
 621         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 622         priv->changed_signal = g_signal_connect (sel, "changed",
 623                                                  G_CALLBACK (on_selection_changed), self);
 624
 625         return GTK_WIDGET(self);
 626 }
 627
 628 /* this feels dirty; any other way to expand all the root items? */
 629 static void
 630 expand_root_items (ModestFolderView *self)
 631 {
 632         GtkTreePath *path;
 633         path = gtk_tree_path_new_first ();
 634
 635         /* all folders should have child items, so.. */
 636         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 637                 gtk_tree_path_next (path);
 638
 639         gtk_tree_path_free (path);
 640 }
 641
 642 /*
 643  * HACK: we use this function to implement the
 644  * MODEST_FOLDER_VIEW_STYLE_SHOW_ONE style. This implementation
 645  * assumes that the model has the following order (which is currently
 646  * true) Remote folders->Local folders->MMC folders, so the rows of
 647  * the first level (that represent the accounts) are received in the
 648  * same order. So basically it uses a static variable to register that
 649  * a remote account has already being shown to hide the others
 650  * (returning NULL). When the function evaluates the local or the MMC
 651  * accounts is time to reset the static variable in order to get it
 652  * ready for the next time the tree model needs to be shown.
 653  */
 654 static gboolean
 655 filter_row (GtkTreeModel *model,
 656             GtkTreeIter *iter,
 657             gpointer data)
 658 {
 659         static gboolean found = FALSE;
 660         gboolean retval;
 661         gint type;
 662         GObject *instance = NULL;
 663
 664         gtk_tree_model_get (model, iter,
 665                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 666                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 667                             -1);
 668
 669         if (type == TNY_FOLDER_TYPE_ROOT) {
 670                 const gchar *account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 671
 672                 if (strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID) &&
 673                     strcmp (account_id, MODEST_MMC_ACCOUNT_ID)) {
 674
 675                         if (!found) {
 676                                 found = TRUE;
 677                                 retval = TRUE;
 678                         } else
 679                                 retval = FALSE;
 680                 } else {
 681                         found = FALSE;
 682                         retval = TRUE;
 683                 }
 684         } else
 685                 retval = TRUE;
 686
 687         g_object_unref (instance);
 688
 689         return retval;
 690 }
 691
 692 static gboolean
 693 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 694 {
 695         ModestFolderViewPrivate *priv;
 696         TnyList          *account_list;
 697         GtkTreeModel     *model;
 698
 699         g_return_val_if_fail (account_store, FALSE);
 700
 701         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 702
 703         /* Notify that there is no folder selected */
 704         g_signal_emit (G_OBJECT(self),
 705                        signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 706                        NULL, TRUE);
 707
 708         /* FIXME: the local accounts are not shown when the query
 709            selects only the subscribed folders. */
 710 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 711         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 712         account_list = TNY_LIST(model);
 713
 714         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 715                                         account_list,
 716                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 717         if (account_list) {
 718                 GtkTreeModel *filter_model = NULL, *sortable = NULL;
 719
 720                 sortable = gtk_tree_model_sort_new_with_model (model);
 721                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 722                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 723                                                       GTK_SORT_ASCENDING);
 724                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 725                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 726                                                  cmp_rows, NULL, NULL);
 727
 728                 /* Create filter model */
 729                 if (priv->style == MODEST_FOLDER_VIEW_STYLE_SHOW_ONE) {
 730                         filter_model = gtk_tree_model_filter_new (sortable, NULL);
 731                         gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (filter_model),
 732                                                                 filter_row,
 733                                                                 NULL,
 734                                                                 NULL);
 735                 }
 736
 737                 /* Set new model */
 738                 gtk_tree_view_set_model (GTK_TREE_VIEW(self),
 739                                          (filter_model) ? filter_model : sortable);
 740                 expand_root_items (self); /* expand all account folders */
 741                 g_object_unref (account_list);
 742         }
 743
 744         return TRUE;
 745 }
 746
 747
 748 static void
 749 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 750 {
 751         GtkTreeModel            *model;
 752         TnyFolderStore          *folder = NULL;
 753         GtkTreeIter             iter;
 754         ModestFolderView        *tree_view;
 755         ModestFolderViewPrivate *priv;
 756         gint                    type;
 757
 758         g_return_if_fail (sel);
 759         g_return_if_fail (user_data);
 760
 761         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 762         priv->cur_selection = sel;
 763
 764         /* folder was _un_selected if true */
 765         if (!gtk_tree_selection_get_selected (sel, &model, &iter)) {
 766                 if (priv->cur_folder_store)
 767                         g_object_unref (priv->cur_folder_store);
 768                 priv->cur_folder_store = NULL;
 769
 770                 /* Notify the display name observers */
 771                 g_signal_emit (G_OBJECT(user_data),
 772                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 773                                NULL);
 774                 return;
 775         }
 776
 777         tree_view = MODEST_FOLDER_VIEW (user_data);
 778
 779         gtk_tree_model_get (model, &iter,
 780                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 781                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 782                             -1);
 783
 784         /* If the folder is the same do not notify */
 785         if (priv->cur_folder_store == folder) {
 786                 g_object_unref (folder);
 787                 return;
 788         }
 789
 790         /* Current folder was unselected */
 791         if (priv->cur_folder_store) {
 792                 g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 793                                priv->cur_folder_store, FALSE);
 794                 g_object_unref (priv->cur_folder_store);
 795         }
 796
 797         /* New current references */
 798         priv->cur_folder_store = folder;
 799
 800         /* New folder has been selected */
 801         g_signal_emit (G_OBJECT(tree_view),
 802                        signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 803                        0, folder, TRUE);
 804 }
 805
 806 TnyFolderStore *
 807 modest_folder_view_get_selected (ModestFolderView *self)
 808 {
 809         ModestFolderViewPrivate *priv;
 810
 811         g_return_val_if_fail (self, NULL);
 812
 813         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 814         if (priv->cur_folder_store)
 815                 g_object_ref (priv->cur_folder_store);
 816
 817         return priv->cur_folder_store;
 818 }
 819
 820 /*
 821  * This function orders the mail accounts following the next rules
 822  * 1st - remote accounts
 823  * 2nd - local account
 824  * 3rd - MMC account
 825  */
 826 static gint
 827 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 828           gpointer user_data)
 829 {
 830         gint cmp;
 831         gchar         *name1, *name2;
 832         TnyFolderType type;
 833         TnyFolder     *folder1, *folder2;
 834
 835         gtk_tree_model_get (tree_model, iter1,
 836                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 837                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 838                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 839                             -1);
 840         gtk_tree_model_get (tree_model, iter2,
 841                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 842                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 843                             -1);
 844
 845         /* Order must be: Remote accounts -> Local account -> MMC account */
 846         if (type == TNY_FOLDER_TYPE_ROOT) {
 847                 const gchar *account_id = tny_account_get_id (TNY_ACCOUNT (folder1));
 848                 const gchar *account_id2 = tny_account_get_id (TNY_ACCOUNT (folder2));
 849
 850                 if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID))
 851                         cmp = +1;
 852                 else {
 853                         if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 854                                 if (!strcmp (account_id2, MODEST_MMC_ACCOUNT_ID))
 855                                         cmp = -1;
 856                                 else
 857                                         cmp = +1;
 858                         } else {
 859                                 if (!strcmp (account_id2, MODEST_LOCAL_FOLDERS_ACCOUNT_ID) ||
 860                                     !strcmp (account_id2, MODEST_MMC_ACCOUNT_ID))
 861                                         cmp = -1;
 862                                 else
 863                                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 864                         }
 865                 }
 866         } else
 867                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 868
 869         if (folder1)
 870                 g_object_unref(G_OBJECT(folder1));
 871         if (folder2)
 872                 g_object_unref(G_OBJECT(folder2));
 873
 874         g_free (name1);
 875         g_free (name2);
 876
 877         return cmp;
 878 }
 879
 880 /*****************************************************************************/
 881 /*                        DRAG and DROP stuff                                */
 882 /*****************************************************************************/
 883
 884 /*
 885  * This function fills the #GtkSelectionData with the row and the
 886  * model that has been dragged. It's called when this widget is a
 887  * source for dnd after the event drop happened
 888  */
 889 static void
 890 on_drag_data_get (GtkWidget *widget,
 891                   GdkDragContext *context,
 892                   GtkSelectionData *selection_data,
 893                   guint info,
 894                   guint time,
 895                   gpointer data)
 896 {
 897         GtkTreeSelection *selection;
 898         GtkTreeModel *model_sort, *model;
 899         GtkTreeIter iter;
 900         GtkTreePath *source_row_sort;
 901         GtkTreePath *source_row;
 902
 903         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 904         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 905         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 906
 907         /* Get the unsorted path and model */
 908         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 909         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 910                                                                      source_row_sort);
 911
 912         gtk_tree_set_row_drag_data (selection_data,
 913                                     model,
 914                                     source_row);
 915
 916         gtk_tree_path_free (source_row_sort);
 917         gtk_tree_path_free (source_row);
 918 }
 919
 920 typedef struct _DndHelper {
 921         gboolean delete_source;
 922         GtkTreePath *source_row;
 923         GdkDragContext *context;
 924         guint time;
 925 } DndHelper;
 926
 927
 928 /*
 929  * This function is the callback of the
 930  * modest_mail_operation_xfer_msg() and
 931  * modest_mail_operation_xfer_folder() calls. We check here if the
 932  * message/folder was correctly asynchronously transferred. The reason
 933  * to use the same callback is that the code is the same, it only has
 934  * to check that the operation went fine and then finalize the drag
 935  * and drop action
 936  */
 937 static void
 938 on_progress_changed (ModestMailOperation *mail_op, gpointer user_data)
 939 {
 940         gboolean success;
 941         DndHelper *helper;
 942
 943         helper = (DndHelper *) user_data;
 944
 945         if (!modest_mail_operation_is_finished (mail_op))
 946                 return;
 947
 948         if (modest_mail_operation_get_status (mail_op) ==
 949             MODEST_MAIL_OPERATION_STATUS_SUCCESS) {
 950                 success = TRUE;
 951         } else {
 952                 success = FALSE;
 953         }
 954
 955         /* Notify the drag source. Never call delete, the monitor will
 956            do the job if needed */
 957         gtk_drag_finish (helper->context, success, FALSE, helper->time);
 958
 959         /* Free the helper */
 960         gtk_tree_path_free (helper->source_row);
 961         g_slice_free (DndHelper, helper);
 962 }
 963
 964 /*
 965  * This function is used by drag_data_received_cb to manage drag and
 966  * drop of a header, i.e, and drag from the header view to the folder
 967  * view.
 968  */
 969 static void
 970 drag_and_drop_from_header_view (GtkTreeModel *source_model,
 971                                 GtkTreeModel *dest_model,
 972                                 GtkTreePath  *dest_row,
 973                                 DndHelper    *helper)
 974 {
 975         TnyHeader *header;
 976         TnyFolder *folder;
 977         ModestMailOperation *mail_op;
 978         GtkTreeIter source_iter, dest_iter;
 979
 980         /* Get header */
 981         gtk_tree_model_get_iter (source_model, &source_iter, helper->source_row);
 982         gtk_tree_model_get (source_model, &source_iter,
 983                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 984                             &header, -1);
 985
 986         /* Get Folder */
 987         gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
 988         gtk_tree_model_get (dest_model, &dest_iter,
 989                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 990                             &folder, -1);
 991
 992         /* Transfer message */
 993         mail_op = modest_mail_operation_new ();
 994         modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
 995                                          mail_op);
 996         g_signal_connect (G_OBJECT (mail_op), "progress-changed",
 997                           G_CALLBACK (on_progress_changed), helper);
 998
 999         modest_mail_operation_xfer_msg (mail_op, header, folder, helper->delete_source);
1000
1001         /* Frees */
1002         g_object_unref (G_OBJECT (mail_op));
1003         g_object_unref (G_OBJECT (header));
1004         g_object_unref (G_OBJECT (folder));
1005 }
1006
1007 /*
1008  * This function is used by drag_data_received_cb to manage drag and
1009  * drop of a folder, i.e, and drag from the folder view to the same
1010  * folder view.
1011  */
1012 static void
1013 drag_and_drop_from_folder_view (GtkTreeModel     *source_model,
1014                                 GtkTreeModel     *dest_model,
1015                                 GtkTreePath      *dest_row,
1016                                 GtkSelectionData *selection_data,
1017                                 DndHelper        *helper)
1018 {
1019         ModestMailOperation *mail_op;
1020         GtkTreeIter parent_iter, iter;
1021         TnyFolderStore *parent_folder;
1022         TnyFolder *folder;
1023
1024         /* Check if the drag is possible */
1025         if (!gtk_tree_path_compare (helper->source_row, dest_row) ||
1026             !gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
1027                                                    dest_row,
1028                                                    selection_data)) {
1029
1030                 gtk_drag_finish (helper->context, FALSE, FALSE, helper->time);
1031                 gtk_tree_path_free (helper->source_row);
1032                 g_slice_free (DndHelper, helper);
1033                 return;
1034         }
1035
1036         /* Get data */
1037         gtk_tree_model_get_iter (source_model, &parent_iter, dest_row);
1038         gtk_tree_model_get_iter (source_model, &iter, helper->source_row);
1039         gtk_tree_model_get (source_model, &parent_iter,
1040                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1041                             &parent_folder, -1);
1042         gtk_tree_model_get (source_model, &iter,
1043                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1044                             &folder, -1);
1045
1046         /* Do the mail operation */
1047         mail_op = modest_mail_operation_new ();
1048         modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
1049                                          mail_op);
1050         g_signal_connect (G_OBJECT (mail_op), "progress-changed",
1051                           G_CALLBACK (on_progress_changed), helper);
1052
1053         modest_mail_operation_xfer_folder (mail_op,
1054                                            folder,
1055                                            parent_folder,
1056                                            helper->delete_source);
1057
1058         /* Frees */
1059         g_object_unref (G_OBJECT (parent_folder));
1060         g_object_unref (G_OBJECT (folder));
1061         g_object_unref (G_OBJECT (mail_op));
1062 }
1063
1064 /*
1065  * This function receives the data set by the "drag-data-get" signal
1066  * handler. This information comes within the #GtkSelectionData. This
1067  * function will manage both the drags of folders of the treeview and
1068  * drags of headers of the header view widget.
1069  */
1070 static void
1071 on_drag_data_received (GtkWidget *widget,
1072                        GdkDragContext *context,
1073                        gint x,
1074                        gint y,
1075                        GtkSelectionData *selection_data,
1076                        guint target_type,
1077                        guint time,
1078                        gpointer data)
1079 {
1080         GtkWidget *source_widget;
1081         GtkTreeModel *model_sort, *dest_model, *source_model;
1082         GtkTreePath *source_row, *dest_row, *child_dest_row;
1083         GtkTreeViewDropPosition pos;
1084         gboolean success = FALSE, delete_source = FALSE;
1085         DndHelper *helper;
1086
1087         /* Do not allow further process */
1088         g_signal_stop_emission_by_name (widget, "drag-data-received");
1089
1090         /* Get the action */
1091         if (context->action == GDK_ACTION_MOVE)
1092                 delete_source = TRUE;
1093
1094         /* Check if the get_data failed */
1095         if (selection_data == NULL || selection_data->length < 0)
1096                 gtk_drag_finish (context, success, FALSE, time);
1097
1098         /* Get the models */
1099         source_widget = gtk_drag_get_source_widget (context);
1100         gtk_tree_get_row_drag_data (selection_data,
1101                                     &source_model,
1102                                     &source_row);
1103
1104         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1105         /* Select the destination model */
1106         if (source_widget == widget) {
1107                 dest_model = source_model;
1108         } else {
1109                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1110         }
1111
1112         /* Get the path to the destination row. Can not call
1113            gtk_tree_view_get_drag_dest_row() because the source row
1114            is not selected anymore */
1115         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), x, y,
1116                                            &dest_row, &pos);
1117
1118         /* Only allow drops IN other rows */
1119         if (!dest_row || pos == GTK_TREE_VIEW_DROP_BEFORE || pos == GTK_TREE_VIEW_DROP_AFTER)
1120                 gtk_drag_finish (context, success, FALSE, time);
1121
1122         /* Create the helper */
1123         helper = g_slice_new0 (DndHelper);
1124         helper->delete_source = delete_source;
1125         helper->source_row = gtk_tree_path_copy (source_row);
1126         helper->context = context;
1127         helper->time = time;
1128
1129         /* Get path from the unsorted model */
1130         child_dest_row =
1131                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
1132                                                                 dest_row);
1133         gtk_tree_path_free (dest_row);
1134
1135         /* Drags from the header view */
1136         if (source_widget != widget) {
1137
1138                 drag_and_drop_from_header_view (source_model,
1139                                                 dest_model,
1140                                                 child_dest_row,
1141                                                 helper);
1142         } else {
1143
1144
1145                 drag_and_drop_from_folder_view (source_model,
1146                                                 dest_model,
1147                                                 child_dest_row,
1148                                                 selection_data,
1149                                                 helper);
1150         }
1151
1152         /* Frees */
1153         gtk_tree_path_free (source_row);
1154         gtk_tree_path_free (child_dest_row);
1155 }
1156
1157 /*
1158  * We define a "drag-drop" signal handler because we do not want to
1159  * use the default one, because the default one always calls
1160  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1161  * signal handler, because there we have all the information available
1162  * to know if the dnd was a success or not.
1163  */
1164 static gboolean
1165 drag_drop_cb (GtkWidget      *widget,
1166               GdkDragContext *context,
1167               gint            x,
1168               gint            y,
1169               guint           time,
1170               gpointer        user_data)
1171 {
1172         gpointer target;
1173
1174         if (!context->targets)
1175                 return FALSE;
1176
1177         /* Check if we're dragging a folder row */
1178         target = gtk_drag_dest_find_target (widget, context, NULL);
1179
1180         /* Request the data from the source. */
1181         gtk_drag_get_data(widget, context, target, time);
1182
1183     return TRUE;
1184 }
1185
1186 /*
1187  * This function expands a node of a tree view if it's not expanded
1188  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1189  * does that, so that's why they're here.
1190  */
1191 static gint
1192 expand_row_timeout (gpointer data)
1193 {
1194         GtkTreeView *tree_view = data;
1195         GtkTreePath *dest_path = NULL;
1196         GtkTreeViewDropPosition pos;
1197         gboolean result = FALSE;
1198
1199         GDK_THREADS_ENTER ();
1200
1201         gtk_tree_view_get_drag_dest_row (tree_view,
1202                                          &dest_path,
1203                                          &pos);
1204
1205         if (dest_path &&
1206             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1207              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1208                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1209                 gtk_tree_path_free (dest_path);
1210         }
1211         else {
1212                 if (dest_path)
1213                         gtk_tree_path_free (dest_path);
1214
1215                 result = TRUE;
1216         }
1217
1218         GDK_THREADS_LEAVE ();
1219
1220         return result;
1221 }
1222
1223 /*
1224  * This function is called whenever the pointer is moved over a widget
1225  * while dragging some data. It installs a timeout that will expand a
1226  * node of the treeview if not expanded yet. This function also calls
1227  * gdk_drag_status in order to set the suggested action that will be
1228  * used by the "drag-data-received" signal handler to know if we
1229  * should do a move or just a copy of the data.
1230  */
1231 static gboolean
1232 on_drag_motion (GtkWidget      *widget,
1233                 GdkDragContext *context,
1234                 gint            x,
1235                 gint            y,
1236                 guint           time,
1237                 gpointer        user_data)
1238 {
1239         GtkTreeViewDropPosition pos;
1240         GtkTreePath *dest_row;
1241         ModestFolderViewPrivate *priv;
1242         GdkDragAction suggested_action;
1243         gboolean valid_location = FALSE;
1244
1245         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1246
1247         if (priv->timer_expander != 0) {
1248                 g_source_remove (priv->timer_expander);
1249                 priv->timer_expander = 0;
1250         }
1251
1252         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1253                                            x, y,
1254                                            &dest_row,
1255                                            &pos);
1256
1257         /* Do not allow drops between folders */
1258         if (!dest_row ||
1259             pos == GTK_TREE_VIEW_DROP_BEFORE ||
1260             pos == GTK_TREE_VIEW_DROP_AFTER) {
1261                 gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), NULL, 0);
1262                 gdk_drag_status(context, 0, time);
1263                 valid_location = FALSE;
1264                 goto out;
1265         } else {
1266                 valid_location = TRUE;
1267         }
1268
1269         /* Expand the selected row after 1/2 second */
1270         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1271                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1272                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1273         }
1274         gtk_tree_path_free (dest_row);
1275
1276         /* Select the desired action. By default we pick MOVE */
1277         suggested_action = GDK_ACTION_MOVE;
1278
1279         if (context->actions == GDK_ACTION_COPY)
1280             gdk_drag_status(context, GDK_ACTION_COPY, time);
1281         else if (context->actions == GDK_ACTION_MOVE)
1282             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1283         else if (context->actions & suggested_action)
1284             gdk_drag_status(context, suggested_action, time);
1285         else
1286             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1287
1288  out:
1289         g_signal_stop_emission_by_name (widget, "drag-motion");
1290         return valid_location;
1291 }
1292
1293
1294 /* Folder view drag types */
1295 const GtkTargetEntry folder_view_drag_types[] =
1296 {
1297         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, MODEST_FOLDER_ROW },
1298         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP,    MODEST_HEADER_ROW }
1299 };
1300
1301 /*
1302  * This function sets the treeview as a source and a target for dnd
1303  * events. It also connects all the requirede signals.
1304  */
1305 static void
1306 setup_drag_and_drop (GtkTreeView *self)
1307 {
1308         /* Set up the folder view as a dnd destination. Set only the
1309            highlight flag, otherwise gtk will have a different
1310            behaviour */
1311         gtk_drag_dest_set (GTK_WIDGET (self),
1312                            GTK_DEST_DEFAULT_HIGHLIGHT,
1313                            folder_view_drag_types,
1314                            G_N_ELEMENTS (folder_view_drag_types),
1315                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1316
1317         g_signal_connect (G_OBJECT (self),
1318                           "drag_data_received",
1319                           G_CALLBACK (on_drag_data_received),
1320                           NULL);
1321
1322
1323         /* Set up the treeview as a dnd source */
1324         gtk_drag_source_set (GTK_WIDGET (self),
1325                              GDK_BUTTON1_MASK,
1326                              folder_view_drag_types,
1327                              G_N_ELEMENTS (folder_view_drag_types),
1328                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1329
1330         g_signal_connect (G_OBJECT (self),
1331                           "drag_motion",
1332                           G_CALLBACK (on_drag_motion),
1333                           NULL);
1334
1335         g_signal_connect (G_OBJECT (self),
1336                           "drag_data_get",
1337                           G_CALLBACK (on_drag_data_get),
1338                           NULL);
1339
1340         g_signal_connect (G_OBJECT (self),
1341                           "drag_drop",
1342                           G_CALLBACK (drag_drop_cb),
1343                           NULL);
1344 }
1345
1346 /*
1347  * This function manages the navigation through the folders using the
1348  * keyboard or the hardware keys in the device
1349  */
1350 static gboolean
1351 on_key_pressed (GtkWidget *self,
1352                 GdkEventKey *event,
1353                 gpointer user_data)
1354 {
1355         GtkTreeSelection *selection;
1356         GtkTreeIter iter;
1357         GtkTreeModel *model;
1358         gboolean retval = FALSE;
1359
1360         /* Up and Down are automatically managed by the treeview */
1361         if (event->keyval == GDK_Return) {
1362                 /* Expand/Collapse the selected row */
1363                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
1364                 if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
1365                         GtkTreePath *path;
1366
1367                         path = gtk_tree_model_get_path (model, &iter);
1368
1369                         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (self), path))
1370                                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (self), path);
1371                         else
1372                                 gtk_tree_view_expand_row (GTK_TREE_VIEW (self), path, FALSE);
1373                         gtk_tree_path_free (path);
1374                 }
1375                 /* No further processing */
1376                 retval = TRUE;
1377         }
1378
1379         return retval;
1380 }
1381
1382 /*
1383  * We listen to the changes in the local folder account name key,
1384  * because we want to show the right name in the view. The local
1385  * folder account name corresponds to the device name in the Maemo
1386  * version. We do this because we do not want to query gconf on each
1387  * tree view refresh. It's better to cache it and change whenever
1388  * necessary.
1389  */
1390 static void
1391 on_configuration_key_changed (ModestConf* conf,
1392                               const gchar *key,
1393                               ModestConfEvent event,
1394                               ModestFolderView *self)
1395 {
1396         ModestFolderViewPrivate *priv;
1397
1398         if (!key || strcmp (key, MODEST_CONF_DEVICE_NAME))
1399                 return;
1400
1401         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1402
1403         g_free (priv->local_account_name);
1404
1405         if (event == MODEST_CONF_EVENT_KEY_UNSET)
1406                 priv->local_account_name = g_strdup (MODEST_LOCAL_FOLDERS_DEFAULT_DISPLAY_NAME);
1407         else
1408                 priv->local_account_name = modest_conf_get_string (modest_runtime_get_conf(),
1409                                                                    MODEST_CONF_DEVICE_NAME, NULL);
1410
1411         /* Force a redraw */
1412 #if GTK_CHECK_VERSION(2, 8, 0) /* gtk_tree_view_column_queue_resize is only available in GTK+ 2.8 */
1413         GtkTreeViewColumn * tree_column = gtk_tree_view_get_column (GTK_TREE_VIEW (self),
1414                                                 TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN);
1415         gtk_tree_view_column_queue_resize (tree_column);
1416 #endif
1417 }
1418
1419 void
1420 modest_folder_view_set_style (ModestFolderView *self,
1421                               ModestFolderViewStyle style)
1422 {
1423         ModestFolderViewPrivate *priv;
1424
1425         g_return_if_fail (self);
1426
1427         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1428
1429         priv->style = style;
1430 }