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 #include <modest-account-mgr-helpers.h>
  53
  54 /* 'private'/'protected' functions */
  55 static void modest_folder_view_class_init  (ModestFolderViewClass *klass);
  56 static void modest_folder_view_init        (ModestFolderView *obj);
  57 static void modest_folder_view_finalize    (GObject *obj);
  58
  59 static void         tny_account_store_view_init (gpointer g,
  60                                                  gpointer iface_data);
  61
  62 static void         modest_folder_view_set_account_store (TnyAccountStoreView *self,
  63                                                           TnyAccountStore     *account_store);
  64
  65 static gboolean     update_model           (ModestFolderView *self,
  66                                             ModestTnyAccountStore *account_store);
  67
  68 static void         on_selection_changed   (GtkTreeSelection *sel, gpointer data);
  69
  70 static void         on_account_update      (TnyAccountStore *account_store,
  71                                             const gchar *account,
  72                                             gpointer user_data);
  73
  74 static void         on_accounts_reloaded   (TnyAccountStore *store,
  75                                             gpointer user_data);
  76
  77 static gint         cmp_rows               (GtkTreeModel *tree_model,
  78                                             GtkTreeIter *iter1,
  79                                             GtkTreeIter *iter2,
  80                                             gpointer user_data);
  81
  82 static gboolean     filter_row             (GtkTreeModel *model,
  83                                             GtkTreeIter *iter,
  84                                             gpointer data);
  85
  86 static gboolean     on_key_pressed         (GtkWidget *self,
  87                                             GdkEventKey *event,
  88                                             gpointer user_data);
  89
  90 static void         on_configuration_key_changed         (ModestConf* conf,
  91                                                           const gchar *key,
  92                                                           ModestConfEvent event,
  93                                                           ModestFolderView *self);
  94
  95 /* DnD functions */
  96 static void         on_drag_data_get       (GtkWidget *widget,
  97                                             GdkDragContext *context,
  98                                             GtkSelectionData *selection_data,
  99                                             guint info,
 100                                             guint time,
 101                                             gpointer data);
 102
 103 static void         on_drag_data_received  (GtkWidget *widget,
 104                                             GdkDragContext *context,
 105                                             gint x,
 106                                             gint y,
 107                                             GtkSelectionData *selection_data,
 108                                             guint info,
 109                                             guint time,
 110                                             gpointer data);
 111
 112 static gboolean     on_drag_motion         (GtkWidget      *widget,
 113                                             GdkDragContext *context,
 114                                             gint            x,
 115                                             gint            y,
 116                                             guint           time,
 117                                             gpointer        user_data);
 118
 119 static gint         expand_row_timeout     (gpointer data);
 120
 121 static void         setup_drag_and_drop    (GtkTreeView *self);
 122
 123 enum {
 124         FOLDER_SELECTION_CHANGED_SIGNAL,
 125         FOLDER_DISPLAY_NAME_CHANGED_SIGNAL,
 126         LAST_SIGNAL
 127 };
 128
 129 typedef struct _ModestFolderViewPrivate ModestFolderViewPrivate;
 130 struct _ModestFolderViewPrivate {
 131         TnyAccountStore      *account_store;
 132         TnyFolderStore       *cur_folder_store;
 133
 134         gulong                account_update_signal;
 135         gulong                changed_signal;
 136         gulong                accounts_reloaded_signal;
 137
 138         GtkTreeSelection     *cur_selection;
 139         TnyFolderStoreQuery  *query;
 140         guint                 timer_expander;
 141
 142         gchar                *local_account_name;
 143         ModestFolderViewStyle style;
 144 };
 145 #define MODEST_FOLDER_VIEW_GET_PRIVATE(o)                       \
 146         (G_TYPE_INSTANCE_GET_PRIVATE((o),                       \
 147                                      MODEST_TYPE_FOLDER_VIEW,   \
 148                                      ModestFolderViewPrivate))
 149 /* globals */
 150 static GObjectClass *parent_class = NULL;
 151
 152 static guint signals[LAST_SIGNAL] = {0};
 153
 154 GType
 155 modest_folder_view_get_type (void)
 156 {
 157         static GType my_type = 0;
 158         if (!my_type) {
 159                 static const GTypeInfo my_info = {
 160                         sizeof(ModestFolderViewClass),
 161                         NULL,           /* base init */
 162                         NULL,           /* base finalize */
 163                         (GClassInitFunc) modest_folder_view_class_init,
 164                         NULL,           /* class finalize */
 165                         NULL,           /* class data */
 166                         sizeof(ModestFolderView),
 167                         1,              /* n_preallocs */
 168                         (GInstanceInitFunc) modest_folder_view_init,
 169                         NULL
 170                 };
 171
 172                 static const GInterfaceInfo tny_account_store_view_info = {
 173                         (GInterfaceInitFunc) tny_account_store_view_init, /* interface_init */
 174                         NULL,         /* interface_finalize */
 175                         NULL          /* interface_data */
 176                 };
 177
 178
 179                 my_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
 180                                                   "ModestFolderView",
 181                                                   &my_info, 0);
 182
 183                 g_type_add_interface_static (my_type,
 184                                              TNY_TYPE_ACCOUNT_STORE_VIEW,
 185                                              &tny_account_store_view_info);
 186         }
 187         return my_type;
 188 }
 189
 190 static void
 191 modest_folder_view_class_init (ModestFolderViewClass *klass)
 192 {
 193         GObjectClass *gobject_class;
 194         gobject_class = (GObjectClass*) klass;
 195
 196         parent_class            = g_type_class_peek_parent (klass);
 197         gobject_class->finalize = modest_folder_view_finalize;
 198
 199         g_type_class_add_private (gobject_class,
 200                                   sizeof(ModestFolderViewPrivate));
 201
 202         signals[FOLDER_SELECTION_CHANGED_SIGNAL] =
 203                 g_signal_new ("folder_selection_changed",
 204                               G_TYPE_FROM_CLASS (gobject_class),
 205                               G_SIGNAL_RUN_FIRST,
 206                               G_STRUCT_OFFSET (ModestFolderViewClass,
 207                                                folder_selection_changed),
 208                               NULL, NULL,
 209                               modest_marshal_VOID__POINTER_BOOLEAN,
 210                               G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 211
 212         /*
 213          * This signal is emitted whenever the currently selected
 214          * folder display name is computed. Note that the name could
 215          * be different to the folder name, because we could append
 216          * the unread messages count to the folder name to build the
 217          * folder display name
 218          */
 219         signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL] =
 220                 g_signal_new ("folder-display-name-changed",
 221                               G_TYPE_FROM_CLASS (gobject_class),
 222                               G_SIGNAL_RUN_FIRST,
 223                               G_STRUCT_OFFSET (ModestFolderViewClass,
 224                                                folder_display_name_changed),
 225                               NULL, NULL,
 226                               g_cclosure_marshal_VOID__STRING,
 227                               G_TYPE_NONE, 1, G_TYPE_STRING);
 228 }
 229
 230
 231
 232 static void
 233 text_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 234                  GtkTreeModel *tree_model,  GtkTreeIter *iter,  gpointer data)
 235 {
 236         ModestFolderViewPrivate *priv;
 237         GObject *rendobj;
 238         gchar *fname = NULL;
 239         gint unread, all;
 240         TnyFolderType type;
 241         GObject *instance = NULL;
 242
 243         g_return_if_fail (column);
 244         g_return_if_fail (tree_model);
 245
 246         gtk_tree_model_get (tree_model, iter,
 247                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 248                             TNY_GTK_FOLDER_STORE_TREE_MODEL_ALL_COLUMN, &all,
 249                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 250                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 251                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 252                             -1);
 253         rendobj = G_OBJECT(renderer);
 254
 255         if (!fname)
 256                 return;
 257
 258         if (!instance) {
 259                 g_free (fname);
 260                 return;
 261         }
 262
 263
 264         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE (data);
 265
 266         if (type != TNY_FOLDER_TYPE_ROOT) {
 267                 gint number;
 268
 269                 if (modest_tny_folder_is_local_folder (TNY_FOLDER (instance))) {
 270                         TnyFolderType type;
 271                         type = modest_tny_folder_get_local_folder_type (TNY_FOLDER (instance));
 272                         if (type != TNY_FOLDER_TYPE_UNKNOWN) {
 273                                 g_free (fname);
 274                                 fname = g_strdup(modest_local_folder_info_get_type_display_name (type));
 275                         }
 276                 }
 277
 278                 /* Select the number to show */
 279                 if ((type == TNY_FOLDER_TYPE_DRAFTS) || (type == TNY_FOLDER_TYPE_OUTBOX))
 280                         number = all;
 281                 else
 282                         number = unread;
 283
 284                 /* Use bold font style if there are unread messages */
 285                 if (unread > 0) {
 286                         gchar *folder_title = g_strdup_printf ("%s (%d)", fname, unread);
 287                         g_object_set (rendobj,"text", folder_title,  "weight", 800, NULL);
 288                         if (G_OBJECT (priv->cur_folder_store) == instance)
 289                                 g_signal_emit (G_OBJECT(data),
 290                                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 291                                                folder_title);
 292                         g_free (folder_title);
 293                 } else {
 294                         g_object_set (rendobj,"text", fname, "weight", 400, NULL);
 295                         if (G_OBJECT (priv->cur_folder_store) == instance)
 296                                 g_signal_emit (G_OBJECT(data),
 297                                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 298                                                fname);
 299                 }
 300
 301         } else {
 302                 const gchar *account_name = NULL;
 303                 const gchar *account_id = NULL;
 304
 305                 /* If it's a server account */
 306                 account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 307                 if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 308                         account_name = priv->local_account_name;
 309                 } else {
 310                         if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID)) {
 311                                 /* TODO: get MMC card name */
 312                         } else {
 313                                 account_name = fname;
 314                         }
 315                 }
 316
 317                 /* Notify display name observers */
 318                 if (G_OBJECT (priv->cur_folder_store) == instance)
 319                         g_signal_emit (G_OBJECT(data),
 320                                        signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 321                                        account_name);
 322
 323                 /* Use bold font style */
 324                 g_object_set (rendobj,"text", account_name, "weight", 800, NULL);
 325         }
 326
 327         g_object_unref (G_OBJECT (instance));
 328         g_free (fname);
 329 }
 330
 331
 332
 333 static void
 334 icon_cell_data  (GtkTreeViewColumn *column,  GtkCellRenderer *renderer,
 335                  GtkTreeModel *tree_model,  GtkTreeIter *iter, gpointer data)
 336 {
 337         GObject *rendobj, *instance;
 338         GdkPixbuf *pixbuf;
 339         TnyFolderType type;
 340         gchar *fname = NULL;
 341         const gchar *account_id = NULL;
 342         gint unread;
 343
 344         rendobj = G_OBJECT(renderer);
 345         gtk_tree_model_get (tree_model, iter,
 346                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 347                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &fname,
 348                             TNY_GTK_FOLDER_STORE_TREE_MODEL_UNREAD_COLUMN, &unread,
 349                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 350                             -1);
 351
 352         if (!fname)
 353                 return;
 354
 355         if (!instance) {
 356                 g_free (fname);
 357                 return;
 358         }
 359
 360         if (type == TNY_FOLDER_TYPE_NORMAL || type == TNY_FOLDER_TYPE_UNKNOWN) {
 361                 type = modest_tny_folder_guess_folder_type_from_name (fname);
 362         }
 363
 364         switch (type) {
 365         case TNY_FOLDER_TYPE_ROOT:
 366                 account_id = tny_account_get_id (TNY_ACCOUNT (instance));
 367                 if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 368                         pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_LOCAL_FOLDERS);
 369                 } else {
 370                         if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID))
 371                                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_MMC);
 372                         else
 373                                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_ACCOUNT);
 374                 }
 375                 break;
 376         case TNY_FOLDER_TYPE_INBOX:
 377                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_INBOX);
 378                 break;
 379         case TNY_FOLDER_TYPE_OUTBOX:
 380                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_OUTBOX);
 381                 break;
 382         case TNY_FOLDER_TYPE_JUNK:
 383                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_JUNK);
 384                 break;
 385         case TNY_FOLDER_TYPE_SENT:
 386                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_SENT);
 387                 break;
 388         case TNY_FOLDER_TYPE_TRASH:
 389                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_TRASH);
 390                 break;
 391         case TNY_FOLDER_TYPE_DRAFTS:
 392                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_DRAFTS);
 393                 break;
 394         case TNY_FOLDER_TYPE_NORMAL:
 395         default:
 396                 pixbuf = modest_platform_get_icon (MODEST_FOLDER_ICON_NORMAL);
 397                 break;
 398         }
 399         g_object_unref (G_OBJECT (instance));
 400         g_free (fname);
 401
 402         /* Set pixbuf */
 403         g_object_set (rendobj, "pixbuf", pixbuf, NULL);
 404 }
 405
 406 static void
 407 add_columns (GtkWidget *treeview)
 408 {
 409         GtkTreeViewColumn *column;
 410         GtkCellRenderer *renderer;
 411         GtkTreeSelection *sel;
 412
 413         /* Create column */
 414         column = gtk_tree_view_column_new ();
 415
 416         /* Set icon and text render function */
 417         renderer = gtk_cell_renderer_pixbuf_new();
 418         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 419         gtk_tree_view_column_set_cell_data_func(column, renderer,
 420                                                 icon_cell_data, treeview, NULL);
 421
 422         renderer = gtk_cell_renderer_text_new();
 423         gtk_tree_view_column_pack_start (column, renderer, FALSE);
 424         gtk_tree_view_column_set_cell_data_func(column, renderer,
 425                                                 text_cell_data, treeview, NULL);
 426
 427         /* Set selection mode */
 428         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(treeview));
 429         gtk_tree_selection_set_mode (sel, GTK_SELECTION_SINGLE);
 430
 431         /* Set treeview appearance */
 432         gtk_tree_view_column_set_spacing (column, 2);
 433         gtk_tree_view_column_set_resizable (column, TRUE);
 434         gtk_tree_view_column_set_fixed_width (column, TRUE);
 435         gtk_tree_view_set_headers_clickable (GTK_TREE_VIEW(treeview), FALSE);
 436         gtk_tree_view_set_enable_search (GTK_TREE_VIEW(treeview), FALSE);
 437
 438         /* Add column */
 439         gtk_tree_view_append_column (GTK_TREE_VIEW(treeview),column);
 440 }
 441
 442 static void
 443 modest_folder_view_init (ModestFolderView *obj)
 444 {
 445         ModestFolderViewPrivate *priv;
 446         ModestConf *conf;
 447
 448         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 449
 450         priv->timer_expander = 0;
 451         priv->account_store  = NULL;
 452         priv->cur_folder_store     = NULL;
 453         priv->query          = NULL;
 454         priv->style          = MODEST_FOLDER_VIEW_STYLE_SHOW_ALL;
 455
 456         /* Initialize the local account name */
 457         conf = modest_runtime_get_conf();
 458         priv->local_account_name = modest_conf_get_string (conf, MODEST_CONF_DEVICE_NAME, NULL);
 459
 460         /* Build treeview */
 461         add_columns (GTK_WIDGET (obj));
 462
 463         /* Setup drag and drop */
 464         setup_drag_and_drop (GTK_TREE_VIEW(obj));
 465
 466         /* Connect signals */
 467         g_signal_connect (G_OBJECT (obj),
 468                           "key-press-event",
 469                           G_CALLBACK (on_key_pressed), NULL);
 470
 471         /*
 472          * Track changes in the local account name (in the device it
 473          * will be the device name)
 474          */
 475         g_signal_connect (G_OBJECT(conf),
 476                           "key_changed",
 477                           G_CALLBACK(on_configuration_key_changed), obj);
 478
 479 }
 480
 481 static void
 482 tny_account_store_view_init (gpointer g, gpointer iface_data)
 483 {
 484         TnyAccountStoreViewIface *klass = (TnyAccountStoreViewIface *)g;
 485
 486         klass->set_account_store_func = modest_folder_view_set_account_store;
 487
 488         return;
 489 }
 490
 491 static void
 492 modest_folder_view_finalize (GObject *obj)
 493 {
 494         ModestFolderViewPrivate *priv;
 495         GtkTreeSelection    *sel;
 496
 497         g_return_if_fail (obj);
 498
 499         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(obj);
 500
 501         if (priv->timer_expander != 0) {
 502                 g_source_remove (priv->timer_expander);
 503                 priv->timer_expander = 0;
 504         }
 505
 506         if (priv->account_store) {
 507                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 508                                              priv->account_update_signal);
 509                 g_signal_handler_disconnect (G_OBJECT(priv->account_store),
 510                                              priv->accounts_reloaded_signal);
 511                 g_object_unref (G_OBJECT(priv->account_store));
 512                 priv->account_store = NULL;
 513         }
 514
 515         if (priv->query) {
 516                 g_object_unref (G_OBJECT (priv->query));
 517                 priv->query = NULL;
 518         }
 519
 520         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(obj));
 521         if (sel)
 522                 g_signal_handler_disconnect (G_OBJECT(sel), priv->changed_signal);
 523
 524         g_free (priv->local_account_name);
 525
 526         G_OBJECT_CLASS(parent_class)->finalize (obj);
 527 }
 528
 529
 530 static void
 531 modest_folder_view_set_account_store (TnyAccountStoreView *self, TnyAccountStore *account_store)
 532 {
 533         ModestFolderViewPrivate *priv;
 534         TnyDevice *device;
 535
 536         g_return_if_fail (MODEST_IS_FOLDER_VIEW (self));
 537         g_return_if_fail (TNY_IS_ACCOUNT_STORE (account_store));
 538
 539         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 540         device = tny_account_store_get_device (account_store);
 541
 542         if (G_UNLIKELY (priv->account_store)) {
 543
 544                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 545                                                    priv->account_update_signal))
 546                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 547                                                      priv->account_update_signal);
 548                 if (g_signal_handler_is_connected (G_OBJECT (priv->account_store),
 549                                                    priv->accounts_reloaded_signal))
 550                         g_signal_handler_disconnect (G_OBJECT (priv->account_store),
 551                                                      priv->accounts_reloaded_signal);
 552
 553                 g_object_unref (G_OBJECT (priv->account_store));
 554         }
 555
 556         priv->account_store = g_object_ref (G_OBJECT (account_store));
 557
 558         priv->account_update_signal =
 559                 g_signal_connect (G_OBJECT(account_store), "account_update",
 560                                   G_CALLBACK (on_account_update), self);
 561
 562         priv->accounts_reloaded_signal =
 563                 g_signal_connect (G_OBJECT(account_store), "accounts_reloaded",
 564                                   G_CALLBACK (on_accounts_reloaded), self);
 565
 566         if (!update_model (MODEST_FOLDER_VIEW (self),
 567                            MODEST_TNY_ACCOUNT_STORE (priv->account_store)))
 568                 g_printerr ("modest: failed to update model\n");
 569
 570         g_object_unref (G_OBJECT (device));
 571 }
 572
 573 static void
 574 on_account_update (TnyAccountStore *account_store, const gchar *account,
 575                    gpointer user_data)
 576 {
 577         if (!update_model (MODEST_FOLDER_VIEW(user_data),
 578                            MODEST_TNY_ACCOUNT_STORE(account_store)))
 579                 g_printerr ("modest: failed to update model for changes in '%s'",
 580                             account);
 581 }
 582
 583 static void
 584 on_accounts_reloaded   (TnyAccountStore *account_store,
 585                         gpointer user_data)
 586 {
 587         update_model (MODEST_FOLDER_VIEW (user_data),
 588                       MODEST_TNY_ACCOUNT_STORE(account_store));
 589 }
 590
 591 void
 592 modest_folder_view_set_title (ModestFolderView *self, const gchar *title)
 593 {
 594         GtkTreeViewColumn *col;
 595
 596         g_return_if_fail (self);
 597
 598         col = gtk_tree_view_get_column (GTK_TREE_VIEW(self), 0);
 599         if (!col) {
 600                 g_printerr ("modest: failed get column for title\n");
 601                 return;
 602         }
 603
 604         gtk_tree_view_column_set_title (col, title);
 605         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(self),
 606                                            title != NULL);
 607 }
 608
 609 GtkWidget*
 610 modest_folder_view_new (TnyFolderStoreQuery *query)
 611 {
 612         GObject *self;
 613         ModestFolderViewPrivate *priv;
 614         GtkTreeSelection *sel;
 615
 616         self = G_OBJECT (g_object_new (MODEST_TYPE_FOLDER_VIEW, NULL));
 617         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (self);
 618
 619         if (query)
 620                 priv->query = g_object_ref (query);
 621
 622         sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
 623         priv->changed_signal = g_signal_connect (sel, "changed",
 624                                                  G_CALLBACK (on_selection_changed), self);
 625
 626         return GTK_WIDGET(self);
 627 }
 628
 629 /* this feels dirty; any other way to expand all the root items? */
 630 static void
 631 expand_root_items (ModestFolderView *self)
 632 {
 633         GtkTreePath *path;
 634         path = gtk_tree_path_new_first ();
 635
 636         /* all folders should have child items, so.. */
 637         while (gtk_tree_view_expand_row (GTK_TREE_VIEW(self), path, FALSE))
 638                 gtk_tree_path_next (path);
 639
 640         gtk_tree_path_free (path);
 641 }
 642
 643 /*
 644  * We use this function to implement the
 645  * MODEST_FOLDER_VIEW_STYLE_SHOW_ONE style. We only show the default
 646  * account in this case
 647  */
 648 static gboolean
 649 filter_row (GtkTreeModel *model,
 650             GtkTreeIter *iter,
 651             gpointer data)
 652 {
 653         gboolean retval = TRUE;
 654         gint type;
 655         GObject *instance = NULL;
 656
 657         gtk_tree_model_get (model, iter,
 658                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 659                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &instance,
 660                             -1);
 661
 662         if (type == TNY_FOLDER_TYPE_ROOT) {
 663                 ModestAccountData *acc_data;
 664                 TnyAccount *acc;
 665                 const gchar *account_id;
 666                 ModestAccountMgr *mgr;
 667
 668                 acc = TNY_ACCOUNT (instance);
 669                 account_id = tny_account_get_id (acc);
 670                 mgr = modest_runtime_get_account_mgr ();
 671                 acc_data = modest_account_mgr_get_account_data (mgr, tny_account_get_name (acc));
 672
 673                 if (strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID) &&
 674                     strcmp (account_id, MODEST_MMC_ACCOUNT_ID)) {
 675                         /* Show only the default account */
 676                         if (!acc_data->is_default)
 677                                 retval = FALSE;
 678                 }
 679                 modest_account_mgr_free_account_data (mgr, acc_data);
 680         }
 681
 682         g_object_unref (instance);
 683
 684         return retval;
 685 }
 686
 687 static gboolean
 688 update_model (ModestFolderView *self, ModestTnyAccountStore *account_store)
 689 {
 690         ModestFolderViewPrivate *priv;
 691         TnyList          *account_list;
 692         GtkTreeModel     *model;
 693
 694         g_return_val_if_fail (account_store, FALSE);
 695
 696         priv =  MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 697
 698         /* Notify that there is no folder selected */
 699         g_signal_emit (G_OBJECT(self),
 700                        signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 701                        NULL, TRUE);
 702
 703         /* FIXME: the local accounts are not shown when the query
 704            selects only the subscribed folders. */
 705 /*      model        = tny_gtk_folder_store_tree_model_new (TRUE, priv->query); */
 706         model        = tny_gtk_folder_store_tree_model_new (TRUE, NULL);
 707         account_list = TNY_LIST(model);
 708
 709         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(account_store),
 710                                         account_list,
 711                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 712         if (account_list) {
 713                 GtkTreeModel *filter_model = NULL, *sortable = NULL;
 714
 715                 sortable = gtk_tree_model_sort_new_with_model (model);
 716                 gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
 717                                                       TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 718                                                       GTK_SORT_ASCENDING);
 719                 gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sortable),
 720                                                  TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN,
 721                                                  cmp_rows, NULL, NULL);
 722
 723                 /* Create filter model */
 724                 if (priv->style == MODEST_FOLDER_VIEW_STYLE_SHOW_ONE) {
 725                         filter_model = gtk_tree_model_filter_new (sortable, NULL);
 726                         gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (filter_model),
 727                                                                 filter_row,
 728                                                                 NULL,
 729                                                                 NULL);
 730                 }
 731
 732                 /* Set new model */
 733                 gtk_tree_view_set_model (GTK_TREE_VIEW(self),
 734                                          (filter_model) ? filter_model : sortable);
 735                 expand_root_items (self); /* expand all account folders */
 736                 g_object_unref (account_list);
 737         }
 738
 739         return TRUE;
 740 }
 741
 742
 743 static void
 744 on_selection_changed (GtkTreeSelection *sel, gpointer user_data)
 745 {
 746         GtkTreeModel            *model;
 747         TnyFolderStore          *folder = NULL;
 748         GtkTreeIter             iter;
 749         ModestFolderView        *tree_view;
 750         ModestFolderViewPrivate *priv;
 751         gint                    type;
 752
 753         g_return_if_fail (sel);
 754         g_return_if_fail (user_data);
 755
 756         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(user_data);
 757         priv->cur_selection = sel;
 758
 759         /* folder was _un_selected if true */
 760         if (!gtk_tree_selection_get_selected (sel, &model, &iter)) {
 761                 if (priv->cur_folder_store)
 762                         g_object_unref (priv->cur_folder_store);
 763                 priv->cur_folder_store = NULL;
 764
 765                 /* Notify the display name observers */
 766                 g_signal_emit (G_OBJECT(user_data),
 767                                signals[FOLDER_DISPLAY_NAME_CHANGED_SIGNAL], 0,
 768                                NULL);
 769                 return;
 770         }
 771
 772         tree_view = MODEST_FOLDER_VIEW (user_data);
 773
 774         gtk_tree_model_get (model, &iter,
 775                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 776                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder,
 777                             -1);
 778
 779         /* If the folder is the same do not notify */
 780         if (priv->cur_folder_store == folder) {
 781                 g_object_unref (folder);
 782                 return;
 783         }
 784
 785         /* Current folder was unselected */
 786         if (priv->cur_folder_store) {
 787                 g_signal_emit (G_OBJECT(tree_view), signals[FOLDER_SELECTION_CHANGED_SIGNAL], 0,
 788                                priv->cur_folder_store, FALSE);
 789                 g_object_unref (priv->cur_folder_store);
 790         }
 791
 792         /* New current references */
 793         priv->cur_folder_store = folder;
 794
 795         /* New folder has been selected */
 796         g_signal_emit (G_OBJECT(tree_view),
 797                        signals[FOLDER_SELECTION_CHANGED_SIGNAL],
 798                        0, folder, TRUE);
 799 }
 800
 801 TnyFolderStore *
 802 modest_folder_view_get_selected (ModestFolderView *self)
 803 {
 804         ModestFolderViewPrivate *priv;
 805
 806         g_return_val_if_fail (self, NULL);
 807
 808         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
 809         if (priv->cur_folder_store)
 810                 g_object_ref (priv->cur_folder_store);
 811
 812         return priv->cur_folder_store;
 813 }
 814
 815 /*
 816  * This function orders the mail accounts following the next rules
 817  * 1st - remote accounts
 818  * 2nd - local account
 819  * 3rd - MMC account
 820  */
 821 static gint
 822 cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 823           gpointer user_data)
 824 {
 825         gint cmp;
 826         gchar         *name1, *name2;
 827         TnyFolderType type;
 828         TnyFolder     *folder1, *folder2;
 829
 830         gtk_tree_model_get (tree_model, iter1,
 831                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name1,
 832                             TNY_GTK_FOLDER_STORE_TREE_MODEL_TYPE_COLUMN, &type,
 833                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder1,
 834                             -1);
 835         gtk_tree_model_get (tree_model, iter2,
 836                             TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN, &name2,
 837                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN, &folder2,
 838                             -1);
 839
 840         /* Order must be: Remote accounts -> Local account -> MMC account */
 841         if (type == TNY_FOLDER_TYPE_ROOT) {
 842                 const gchar *account_id = tny_account_get_id (TNY_ACCOUNT (folder1));
 843                 const gchar *account_id2 = tny_account_get_id (TNY_ACCOUNT (folder2));
 844
 845                 if (!strcmp (account_id, MODEST_MMC_ACCOUNT_ID))
 846                         cmp = +1;
 847                 else {
 848                         if (!strcmp (account_id, MODEST_LOCAL_FOLDERS_ACCOUNT_ID)) {
 849                                 if (!strcmp (account_id2, MODEST_MMC_ACCOUNT_ID))
 850                                         cmp = -1;
 851                                 else
 852                                         cmp = +1;
 853                         } else {
 854                                 if (!strcmp (account_id2, MODEST_LOCAL_FOLDERS_ACCOUNT_ID) ||
 855                                     !strcmp (account_id2, MODEST_MMC_ACCOUNT_ID))
 856                                         cmp = -1;
 857                                 else
 858                                         cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 859                         }
 860                 }
 861         } else
 862                 cmp = modest_text_utils_utf8_strcmp (name1, name2, TRUE);
 863
 864         if (folder1)
 865                 g_object_unref(G_OBJECT(folder1));
 866         if (folder2)
 867                 g_object_unref(G_OBJECT(folder2));
 868
 869         g_free (name1);
 870         g_free (name2);
 871
 872         return cmp;
 873 }
 874
 875 /*****************************************************************************/
 876 /*                        DRAG and DROP stuff                                */
 877 /*****************************************************************************/
 878
 879 /*
 880  * This function fills the #GtkSelectionData with the row and the
 881  * model that has been dragged. It's called when this widget is a
 882  * source for dnd after the event drop happened
 883  */
 884 static void
 885 on_drag_data_get (GtkWidget *widget,
 886                   GdkDragContext *context,
 887                   GtkSelectionData *selection_data,
 888                   guint info,
 889                   guint time,
 890                   gpointer data)
 891 {
 892         GtkTreeSelection *selection;
 893         GtkTreeModel *model_sort, *model;
 894         GtkTreeIter iter;
 895         GtkTreePath *source_row_sort;
 896         GtkTreePath *source_row;
 897
 898         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
 899         gtk_tree_selection_get_selected (selection, &model_sort, &iter);
 900         source_row_sort = gtk_tree_model_get_path (model_sort, &iter);
 901
 902         /* Get the unsorted path and model */
 903         model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
 904         source_row = gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
 905                                                                      source_row_sort);
 906
 907         gtk_tree_set_row_drag_data (selection_data,
 908                                     model,
 909                                     source_row);
 910
 911         gtk_tree_path_free (source_row_sort);
 912         gtk_tree_path_free (source_row);
 913 }
 914
 915 typedef struct _DndHelper {
 916         gboolean delete_source;
 917         GtkTreePath *source_row;
 918         GdkDragContext *context;
 919         guint time;
 920 } DndHelper;
 921
 922
 923 /*
 924  * This function is the callback of the
 925  * modest_mail_operation_xfer_msgs () and
 926  * modest_mail_operation_xfer_folder() calls. We check here if the
 927  * message/folder was correctly asynchronously transferred. The reason
 928  * to use the same callback is that the code is the same, it only has
 929  * to check that the operation went fine and then finalize the drag
 930  * and drop action
 931  */
 932 static void
 933 on_progress_changed (ModestMailOperation *mail_op, gpointer user_data)
 934 {
 935         gboolean success;
 936         DndHelper *helper;
 937
 938         helper = (DndHelper *) user_data;
 939
 940         if (!modest_mail_operation_is_finished (mail_op))
 941                 return;
 942
 943         if (modest_mail_operation_get_status (mail_op) ==
 944             MODEST_MAIL_OPERATION_STATUS_SUCCESS) {
 945                 success = TRUE;
 946         } else {
 947                 success = FALSE;
 948         }
 949
 950         /* Notify the drag source. Never call delete, the monitor will
 951            do the job if needed */
 952         gtk_drag_finish (helper->context, success, FALSE, helper->time);
 953
 954         /* Free the helper */
 955         gtk_tree_path_free (helper->source_row);
 956         g_slice_free (DndHelper, helper);
 957 }
 958
 959 /*
 960  * This function is used by drag_data_received_cb to manage drag and
 961  * drop of a header, i.e, and drag from the header view to the folder
 962  * view.
 963  */
 964 static void
 965 drag_and_drop_from_header_view (GtkTreeModel *source_model,
 966                                 GtkTreeModel *dest_model,
 967                                 GtkTreePath  *dest_row,
 968                                 DndHelper    *helper)
 969 {
 970         TnyList *headers;
 971         TnyHeader *header;
 972         TnyFolder *folder;
 973         ModestMailOperation *mail_op;
 974         GtkTreeIter source_iter, dest_iter;
 975
 976         /* Get header */
 977         gtk_tree_model_get_iter (source_model, &source_iter, helper->source_row);
 978         gtk_tree_model_get (source_model, &source_iter,
 979                             TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
 980                             &header, -1);
 981
 982         /* Get Folder */
 983         gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
 984         gtk_tree_model_get (dest_model, &dest_iter,
 985                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
 986                             &folder, -1);
 987
 988         /* Transfer message */
 989         mail_op = modest_mail_operation_new (MODEST_MAIL_OPERATION_ID_RECEIVE);
 990
 991         modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
 992                                          mail_op);
 993         g_signal_connect (G_OBJECT (mail_op), "progress-changed",
 994                           G_CALLBACK (on_progress_changed), helper);
 995
 996         /* FIXME: I replaced this because the API changed, but D&D
 997            should be reviewed in order to allow multiple drags*/
 998         headers = tny_simple_list_new ();
 999         tny_list_append (headers, G_OBJECT (header));
1000         g_object_unref (header);
1001         modest_mail_operation_xfer_msgs (mail_op, headers, folder, helper->delete_source);
1002
1003         /* Frees */
1004         g_object_unref (G_OBJECT (mail_op));
1005         g_object_unref (G_OBJECT (header));
1006         g_object_unref (G_OBJECT (folder));
1007 }
1008
1009 /*
1010  * This function is used by drag_data_received_cb to manage drag and
1011  * drop of a folder, i.e, and drag from the folder view to the same
1012  * folder view.
1013  */
1014 static void
1015 drag_and_drop_from_folder_view (GtkTreeModel     *source_model,
1016                                 GtkTreeModel     *dest_model,
1017                                 GtkTreePath      *dest_row,
1018                                 GtkSelectionData *selection_data,
1019                                 DndHelper        *helper)
1020 {
1021         ModestMailOperation *mail_op;
1022         GtkTreeIter parent_iter, iter;
1023         TnyFolderStore *parent_folder;
1024         TnyFolder *folder;
1025
1026         /* Check if the drag is possible */
1027         if (!gtk_tree_path_compare (helper->source_row, dest_row) ||
1028             !gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (dest_model),
1029                                                    dest_row,
1030                                                    selection_data)) {
1031
1032                 gtk_drag_finish (helper->context, FALSE, FALSE, helper->time);
1033                 gtk_tree_path_free (helper->source_row);
1034                 g_slice_free (DndHelper, helper);
1035                 return;
1036         }
1037
1038         /* Get data */
1039         gtk_tree_model_get_iter (source_model, &parent_iter, dest_row);
1040         gtk_tree_model_get_iter (source_model, &iter, helper->source_row);
1041         gtk_tree_model_get (source_model, &parent_iter,
1042                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1043                             &parent_folder, -1);
1044         gtk_tree_model_get (source_model, &iter,
1045                             TNY_GTK_FOLDER_STORE_TREE_MODEL_INSTANCE_COLUMN,
1046                             &folder, -1);
1047
1048         /* Do the mail operation */
1049         mail_op = modest_mail_operation_new (MODEST_MAIL_OPERATION_ID_RECEIVE);
1050         modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
1051                                          mail_op);
1052         g_signal_connect (G_OBJECT (mail_op), "progress-changed",
1053                           G_CALLBACK (on_progress_changed), helper);
1054
1055         modest_mail_operation_xfer_folder (mail_op,
1056                                            folder,
1057                                            parent_folder,
1058                                            helper->delete_source);
1059
1060         /* Frees */
1061         g_object_unref (G_OBJECT (parent_folder));
1062         g_object_unref (G_OBJECT (folder));
1063         g_object_unref (G_OBJECT (mail_op));
1064 }
1065
1066 /*
1067  * This function receives the data set by the "drag-data-get" signal
1068  * handler. This information comes within the #GtkSelectionData. This
1069  * function will manage both the drags of folders of the treeview and
1070  * drags of headers of the header view widget.
1071  */
1072 static void
1073 on_drag_data_received (GtkWidget *widget,
1074                        GdkDragContext *context,
1075                        gint x,
1076                        gint y,
1077                        GtkSelectionData *selection_data,
1078                        guint target_type,
1079                        guint time,
1080                        gpointer data)
1081 {
1082         GtkWidget *source_widget;
1083         GtkTreeModel *model_sort, *dest_model, *source_model;
1084         GtkTreePath *source_row, *dest_row, *child_dest_row;
1085         GtkTreeViewDropPosition pos;
1086         gboolean success = FALSE, delete_source = FALSE;
1087         DndHelper *helper;
1088
1089         /* Do not allow further process */
1090         g_signal_stop_emission_by_name (widget, "drag-data-received");
1091
1092         /* Get the action */
1093         if (context->action == GDK_ACTION_MOVE)
1094                 delete_source = TRUE;
1095
1096         /* Check if the get_data failed */
1097         if (selection_data == NULL || selection_data->length < 0)
1098                 gtk_drag_finish (context, success, FALSE, time);
1099
1100         /* Get the models */
1101         source_widget = gtk_drag_get_source_widget (context);
1102         gtk_tree_get_row_drag_data (selection_data,
1103                                     &source_model,
1104                                     &source_row);
1105
1106         model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
1107         /* Select the destination model */
1108         if (source_widget == widget) {
1109                 dest_model = source_model;
1110         } else {
1111                 dest_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (model_sort));
1112         }
1113
1114         /* Get the path to the destination row. Can not call
1115            gtk_tree_view_get_drag_dest_row() because the source row
1116            is not selected anymore */
1117         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), x, y,
1118                                            &dest_row, &pos);
1119
1120         /* Only allow drops IN other rows */
1121         if (!dest_row || pos == GTK_TREE_VIEW_DROP_BEFORE || pos == GTK_TREE_VIEW_DROP_AFTER)
1122                 gtk_drag_finish (context, success, FALSE, time);
1123
1124         /* Create the helper */
1125         helper = g_slice_new0 (DndHelper);
1126         helper->delete_source = delete_source;
1127         helper->source_row = gtk_tree_path_copy (source_row);
1128         helper->context = context;
1129         helper->time = time;
1130
1131         /* Get path from the unsorted model */
1132         child_dest_row =
1133                 gtk_tree_model_sort_convert_path_to_child_path (GTK_TREE_MODEL_SORT (model_sort),
1134                                                                 dest_row);
1135         gtk_tree_path_free (dest_row);
1136
1137         /* Drags from the header view */
1138         if (source_widget != widget) {
1139
1140                 drag_and_drop_from_header_view (source_model,
1141                                                 dest_model,
1142                                                 child_dest_row,
1143                                                 helper);
1144         } else {
1145
1146
1147                 drag_and_drop_from_folder_view (source_model,
1148                                                 dest_model,
1149                                                 child_dest_row,
1150                                                 selection_data,
1151                                                 helper);
1152         }
1153
1154         /* Frees */
1155         gtk_tree_path_free (source_row);
1156         gtk_tree_path_free (child_dest_row);
1157 }
1158
1159 /*
1160  * We define a "drag-drop" signal handler because we do not want to
1161  * use the default one, because the default one always calls
1162  * gtk_drag_finish and we prefer to do it in the "drag-data-received"
1163  * signal handler, because there we have all the information available
1164  * to know if the dnd was a success or not.
1165  */
1166 static gboolean
1167 drag_drop_cb (GtkWidget      *widget,
1168               GdkDragContext *context,
1169               gint            x,
1170               gint            y,
1171               guint           time,
1172               gpointer        user_data)
1173 {
1174         gpointer target;
1175
1176         if (!context->targets)
1177                 return FALSE;
1178
1179         /* Check if we're dragging a folder row */
1180         target = gtk_drag_dest_find_target (widget, context, NULL);
1181
1182         /* Request the data from the source. */
1183         gtk_drag_get_data(widget, context, target, time);
1184
1185     return TRUE;
1186 }
1187
1188 /*
1189  * This function expands a node of a tree view if it's not expanded
1190  * yet. Not sure why it needs the threads stuff, but gtk+`example code
1191  * does that, so that's why they're here.
1192  */
1193 static gint
1194 expand_row_timeout (gpointer data)
1195 {
1196         GtkTreeView *tree_view = data;
1197         GtkTreePath *dest_path = NULL;
1198         GtkTreeViewDropPosition pos;
1199         gboolean result = FALSE;
1200
1201         GDK_THREADS_ENTER ();
1202
1203         gtk_tree_view_get_drag_dest_row (tree_view,
1204                                          &dest_path,
1205                                          &pos);
1206
1207         if (dest_path &&
1208             (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
1209              pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
1210                 gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
1211                 gtk_tree_path_free (dest_path);
1212         }
1213         else {
1214                 if (dest_path)
1215                         gtk_tree_path_free (dest_path);
1216
1217                 result = TRUE;
1218         }
1219
1220         GDK_THREADS_LEAVE ();
1221
1222         return result;
1223 }
1224
1225 /*
1226  * This function is called whenever the pointer is moved over a widget
1227  * while dragging some data. It installs a timeout that will expand a
1228  * node of the treeview if not expanded yet. This function also calls
1229  * gdk_drag_status in order to set the suggested action that will be
1230  * used by the "drag-data-received" signal handler to know if we
1231  * should do a move or just a copy of the data.
1232  */
1233 static gboolean
1234 on_drag_motion (GtkWidget      *widget,
1235                 GdkDragContext *context,
1236                 gint            x,
1237                 gint            y,
1238                 guint           time,
1239                 gpointer        user_data)
1240 {
1241         GtkTreeViewDropPosition pos;
1242         GtkTreePath *dest_row;
1243         ModestFolderViewPrivate *priv;
1244         GdkDragAction suggested_action;
1245         gboolean valid_location = FALSE;
1246
1247         priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
1248
1249         if (priv->timer_expander != 0) {
1250                 g_source_remove (priv->timer_expander);
1251                 priv->timer_expander = 0;
1252         }
1253
1254         gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
1255                                            x, y,
1256                                            &dest_row,
1257                                            &pos);
1258
1259         /* Do not allow drops between folders */
1260         if (!dest_row ||
1261             pos == GTK_TREE_VIEW_DROP_BEFORE ||
1262             pos == GTK_TREE_VIEW_DROP_AFTER) {
1263                 gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), NULL, 0);
1264                 gdk_drag_status(context, 0, time);
1265                 valid_location = FALSE;
1266                 goto out;
1267         } else {
1268                 valid_location = TRUE;
1269         }
1270
1271         /* Expand the selected row after 1/2 second */
1272         if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
1273                 gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
1274                 priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
1275         }
1276         gtk_tree_path_free (dest_row);
1277
1278         /* Select the desired action. By default we pick MOVE */
1279         suggested_action = GDK_ACTION_MOVE;
1280
1281         if (context->actions == GDK_ACTION_COPY)
1282             gdk_drag_status(context, GDK_ACTION_COPY, time);
1283         else if (context->actions == GDK_ACTION_MOVE)
1284             gdk_drag_status(context, GDK_ACTION_MOVE, time);
1285         else if (context->actions & suggested_action)
1286             gdk_drag_status(context, suggested_action, time);
1287         else
1288             gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
1289
1290  out:
1291         g_signal_stop_emission_by_name (widget, "drag-motion");
1292         return valid_location;
1293 }
1294
1295
1296 /* Folder view drag types */
1297 const GtkTargetEntry folder_view_drag_types[] =
1298 {
1299         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, MODEST_FOLDER_ROW },
1300         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP,    MODEST_HEADER_ROW }
1301 };
1302
1303 /*
1304  * This function sets the treeview as a source and a target for dnd
1305  * events. It also connects all the requirede signals.
1306  */
1307 static void
1308 setup_drag_and_drop (GtkTreeView *self)
1309 {
1310         /* Set up the folder view as a dnd destination. Set only the
1311            highlight flag, otherwise gtk will have a different
1312            behaviour */
1313         gtk_drag_dest_set (GTK_WIDGET (self),
1314                            GTK_DEST_DEFAULT_HIGHLIGHT,
1315                            folder_view_drag_types,
1316                            G_N_ELEMENTS (folder_view_drag_types),
1317                            GDK_ACTION_MOVE | GDK_ACTION_COPY);
1318
1319         g_signal_connect (G_OBJECT (self),
1320                           "drag_data_received",
1321                           G_CALLBACK (on_drag_data_received),
1322                           NULL);
1323
1324
1325         /* Set up the treeview as a dnd source */
1326         gtk_drag_source_set (GTK_WIDGET (self),
1327                              GDK_BUTTON1_MASK,
1328                              folder_view_drag_types,
1329                              G_N_ELEMENTS (folder_view_drag_types),
1330                              GDK_ACTION_MOVE | GDK_ACTION_COPY);
1331
1332         g_signal_connect (G_OBJECT (self),
1333                           "drag_motion",
1334                           G_CALLBACK (on_drag_motion),
1335                           NULL);
1336
1337         g_signal_connect (G_OBJECT (self),
1338                           "drag_data_get",
1339                           G_CALLBACK (on_drag_data_get),
1340                           NULL);
1341
1342         g_signal_connect (G_OBJECT (self),
1343                           "drag_drop",
1344                           G_CALLBACK (drag_drop_cb),
1345                           NULL);
1346 }
1347
1348 /*
1349  * This function manages the navigation through the folders using the
1350  * keyboard or the hardware keys in the device
1351  */
1352 static gboolean
1353 on_key_pressed (GtkWidget *self,
1354                 GdkEventKey *event,
1355                 gpointer user_data)
1356 {
1357         GtkTreeSelection *selection;
1358         GtkTreeIter iter;
1359         GtkTreeModel *model;
1360         gboolean retval = FALSE;
1361
1362         /* Up and Down are automatically managed by the treeview */
1363         if (event->keyval == GDK_Return) {
1364                 /* Expand/Collapse the selected row */
1365                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
1366                 if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
1367                         GtkTreePath *path;
1368
1369                         path = gtk_tree_model_get_path (model, &iter);
1370
1371                         if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (self), path))
1372                                 gtk_tree_view_collapse_row (GTK_TREE_VIEW (self), path);
1373                         else
1374                                 gtk_tree_view_expand_row (GTK_TREE_VIEW (self), path, FALSE);
1375                         gtk_tree_path_free (path);
1376                 }
1377                 /* No further processing */
1378                 retval = TRUE;
1379         }
1380
1381         return retval;
1382 }
1383
1384 /*
1385  * We listen to the changes in the local folder account name key,
1386  * because we want to show the right name in the view. The local
1387  * folder account name corresponds to the device name in the Maemo
1388  * version. We do this because we do not want to query gconf on each
1389  * tree view refresh. It's better to cache it and change whenever
1390  * necessary.
1391  */
1392 static void
1393 on_configuration_key_changed (ModestConf* conf,
1394                               const gchar *key,
1395                               ModestConfEvent event,
1396                               ModestFolderView *self)
1397 {
1398         ModestFolderViewPrivate *priv;
1399
1400         if (!key || strcmp (key, MODEST_CONF_DEVICE_NAME))
1401                 return;
1402
1403         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1404
1405         g_free (priv->local_account_name);
1406
1407         if (event == MODEST_CONF_EVENT_KEY_UNSET)
1408                 priv->local_account_name = g_strdup (MODEST_LOCAL_FOLDERS_DEFAULT_DISPLAY_NAME);
1409         else
1410                 priv->local_account_name = modest_conf_get_string (modest_runtime_get_conf(),
1411                                                                    MODEST_CONF_DEVICE_NAME, NULL);
1412
1413         /* Force a redraw */
1414 #if GTK_CHECK_VERSION(2, 8, 0) /* gtk_tree_view_column_queue_resize is only available in GTK+ 2.8 */
1415         GtkTreeViewColumn * tree_column = gtk_tree_view_get_column (GTK_TREE_VIEW (self),
1416                                                 TNY_GTK_FOLDER_STORE_TREE_MODEL_NAME_COLUMN);
1417         gtk_tree_view_column_queue_resize (tree_column);
1418 #endif
1419 }
1420
1421 void
1422 modest_folder_view_set_style (ModestFolderView *self,
1423                               ModestFolderViewStyle style)
1424 {
1425         ModestFolderViewPrivate *priv;
1426
1427         g_return_if_fail (self);
1428
1429         priv = MODEST_FOLDER_VIEW_GET_PRIVATE(self);
1430
1431         priv->style = style;
1432 }