git.maemo.org Git - modest/blob - src/widgets/modest-window-mgr.c

   1 /* Copyright (c) 2006,2007 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 <string.h>
  31 #include "modest-window-mgr.h"
  32 #include "modest-runtime.h"
  33 #include "modest-tny-folder.h"
  34 #include "modest-ui-actions.h"
  35 #include "modest-platform.h"
  36 #include "widgets/modest-main-window.h"
  37 #include "widgets/modest-msg-edit-window.h"
  38 #include "widgets/modest-msg-view-window.h"
  39 #include "modest-debug.h"
  40
  41
  42 /* 'private'/'protected' functions */
  43 static void modest_window_mgr_class_init (ModestWindowMgrClass *klass);
  44 static void modest_window_mgr_init       (ModestWindowMgr *obj);
  45 static void modest_window_mgr_finalize   (GObject *obj);
  46
  47 static gboolean on_window_destroy        (ModestWindow *window,
  48                                           GdkEvent *event,
  49                                           ModestWindowMgr *self);
  50
  51 static gboolean on_modal_window_close    (GtkWidget *widget,
  52                                           GdkEvent *event,
  53                                           gpointer user_data);
  54
  55 static void     on_modal_dialog_close    (GtkDialog *dialog,
  56                                           gint arg1,
  57                                           gpointer user_data);
  58
  59 static const gchar* get_show_toolbar_key (GType window_type,
  60                                           gboolean fullscreen);
  61
  62 /* list my signals  */
  63 enum {
  64         WINDOW_LIST_EMPTY_SIGNAL,
  65         NUM_SIGNALS
  66 };
  67
  68 typedef struct _ModestWindowMgrPrivate ModestWindowMgrPrivate;
  69 struct _ModestWindowMgrPrivate {
  70         GList        *window_list;
  71         guint         banner_counter;
  72
  73         ModestWindow *main_window;
  74
  75         GMutex       *queue_lock;
  76         GQueue       *modal_windows;
  77
  78         gboolean     fullscreen_mode;
  79
  80         GSList       *windows_that_prevent_hibernation;
  81         GSList       *preregistered_uids;
  82         GHashTable   *destroy_handlers;
  83         GHashTable   *viewer_handlers;
  84
  85         guint        closing_time;
  86
  87         GSList       *modal_handler_uids;
  88         GtkWidget    *cached_view;
  89         GtkWidget    *cached_editor;
  90         guint        idle_load_view_id;
  91         guint        idle_load_editor_id;
  92 };
  93 #define MODEST_WINDOW_MGR_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  94                                                MODEST_TYPE_WINDOW_MGR, \
  95                                                ModestWindowMgrPrivate))
  96 /* globals */
  97 static GObjectClass *parent_class = NULL;
  98
  99 /* uncomment the following if you have defined any signals */
 100 static guint signals[NUM_SIGNALS] = {0};
 101
 102 GType
 103 modest_window_mgr_get_type (void)
 104 {
 105         static GType my_type = 0;
 106         if (!my_type) {
 107                 static const GTypeInfo my_info = {
 108                         sizeof(ModestWindowMgrClass),
 109                         NULL,           /* base init */
 110                         NULL,           /* base finalize */
 111                         (GClassInitFunc) modest_window_mgr_class_init,
 112                         NULL,           /* class finalize */
 113                         NULL,           /* class data */
 114                         sizeof(ModestWindowMgr),
 115                         1,              /* n_preallocs */
 116                         (GInstanceInitFunc) modest_window_mgr_init,
 117                         NULL
 118                 };
 119                 my_type = g_type_register_static (G_TYPE_OBJECT,
 120                                                   "ModestWindowMgr",
 121                                                   &my_info, 0);
 122         }
 123         return my_type;
 124 }
 125
 126 static void
 127 modest_window_mgr_class_init (ModestWindowMgrClass *klass)
 128 {
 129         GObjectClass *gobject_class;
 130         gobject_class = (GObjectClass*) klass;
 131
 132         parent_class            = g_type_class_peek_parent (klass);
 133         gobject_class->finalize = modest_window_mgr_finalize;
 134
 135         g_type_class_add_private (gobject_class, sizeof(ModestWindowMgrPrivate));
 136
 137
 138         /**
 139          * ModestWindowMgr::window-list-empty
 140          * @self: the #ModestWindowMgr that emits the signal
 141          * @user_data: user data set when the signal handler was connected
 142          *
 143          * Issued whenever the window list becomes empty
 144          */
 145         signals[WINDOW_LIST_EMPTY_SIGNAL] =
 146                 g_signal_new ("window-list-empty",
 147                               G_TYPE_FROM_CLASS (gobject_class),
 148                               G_SIGNAL_RUN_FIRST,
 149                               G_STRUCT_OFFSET (ModestWindowMgrClass, window_list_empty),
 150                               NULL, NULL,
 151                               g_cclosure_marshal_VOID__VOID,
 152                               G_TYPE_NONE, 0);
 153 }
 154
 155 static gboolean
 156 idle_load_view (ModestWindowMgr *mgr)
 157 {
 158         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (mgr);
 159
 160         priv->cached_view = g_object_new (MODEST_TYPE_MSG_VIEW_WINDOW, NULL);
 161         priv->idle_load_view_id = 0;
 162         return FALSE;
 163 }
 164
 165 static gboolean
 166 idle_load_editor (ModestWindowMgr *mgr)
 167 {
 168         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (mgr);
 169
 170         priv->cached_editor = g_object_new (MODEST_TYPE_MSG_EDIT_WINDOW, NULL);
 171         priv->idle_load_editor_id = 0;
 172         return FALSE;
 173 }
 174
 175 static void
 176 load_new_view (ModestWindowMgr *self)
 177 {
 178         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 179         if ((priv->cached_view == NULL) && (priv->idle_load_view_id == 0))
 180                 priv->idle_load_view_id = g_idle_add ((GSourceFunc) idle_load_view, self);
 181 }
 182
 183 static void
 184 load_new_editor (ModestWindowMgr *self)
 185 {
 186         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 187         if ((priv->cached_editor == NULL) && (priv->idle_load_editor_id == 0))
 188                 priv->idle_load_editor_id = g_idle_add ((GSourceFunc) idle_load_editor, self);
 189 }
 190
 191 static void
 192 modest_window_mgr_init (ModestWindowMgr *obj)
 193 {
 194         ModestWindowMgrPrivate *priv;
 195
 196         priv = MODEST_WINDOW_MGR_GET_PRIVATE(obj);
 197         priv->window_list = NULL;
 198         priv->banner_counter = 0;
 199         priv->main_window = NULL;
 200         priv->fullscreen_mode = FALSE;
 201
 202         priv->modal_windows = g_queue_new ();
 203         priv->queue_lock = g_mutex_new ();
 204
 205         priv->preregistered_uids = NULL;
 206
 207         /* Could not initialize it from gconf, singletons are not
 208            ready yet */
 209         priv->destroy_handlers = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
 210         priv->viewer_handlers = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
 211
 212         priv->closing_time = 0;
 213
 214         priv->modal_handler_uids = NULL;
 215         priv->cached_view = NULL;
 216         priv->cached_editor = NULL;
 217 }
 218
 219 static void
 220 modest_window_mgr_finalize (GObject *obj)
 221 {
 222         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE(obj);
 223
 224         if (priv->idle_load_view_id > 0) {
 225                 g_source_remove (priv->idle_load_view_id);
 226                 priv->idle_load_view_id = 0;
 227         }
 228
 229         if (priv->idle_load_editor_id > 0) {
 230                 g_source_remove (priv->idle_load_editor_id);
 231                 priv->idle_load_editor_id = 0;
 232         }
 233
 234         if (priv->cached_view) {
 235                 gtk_widget_destroy (priv->cached_view);
 236                 priv->cached_view = NULL;
 237         }
 238         if (priv->cached_editor) {
 239                 gtk_widget_destroy (priv->cached_editor);
 240                 priv->cached_editor = NULL;
 241         }
 242
 243         if (priv->window_list) {
 244                 GList *iter = priv->window_list;
 245                 /* unregister pending windows */
 246                 while (iter) {
 247                         modest_window_mgr_unregister_window (MODEST_WINDOW_MGR (obj),
 248                                                              MODEST_WINDOW (iter->data));
 249                         iter = g_list_next (iter);
 250                 }
 251                 g_list_free (priv->window_list);
 252                 priv->window_list = NULL;
 253         }
 254
 255         g_slist_foreach (priv->preregistered_uids, (GFunc)g_free, NULL);
 256         g_slist_free (priv->preregistered_uids);
 257
 258
 259         /* Free the hash table with the handlers */
 260         if (priv->destroy_handlers) {
 261                 g_hash_table_destroy (priv->destroy_handlers);
 262                 priv->destroy_handlers = NULL;
 263         }
 264
 265         if (priv->viewer_handlers) {
 266                 g_hash_table_destroy (priv->viewer_handlers);
 267                 priv->viewer_handlers = NULL;
 268         }
 269
 270         modest_signal_mgr_disconnect_all_and_destroy (priv->modal_handler_uids);
 271
 272         if (priv->modal_windows) {
 273                 g_mutex_lock (priv->queue_lock);
 274                 g_queue_free (priv->modal_windows);
 275                 priv->modal_windows = NULL;
 276                 g_mutex_unlock (priv->queue_lock);
 277         }
 278         g_mutex_free (priv->queue_lock);
 279
 280         /* Do not unref priv->main_window because it does not hold a
 281            new reference */
 282
 283
 284         G_OBJECT_CLASS(parent_class)->finalize (obj);
 285 }
 286
 287 ModestWindowMgr*
 288 modest_window_mgr_new (void)
 289 {
 290         return MODEST_WINDOW_MGR(g_object_new(MODEST_TYPE_WINDOW_MGR, NULL));
 291 }
 292
 293
 294
 295
 296 /* do we have uid? */
 297 static gboolean
 298 has_uid (GSList *list, const gchar *uid)
 299 {
 300         GSList *cursor = list;
 301
 302         if (!uid)
 303                 return FALSE;
 304
 305         while (cursor) {
 306                 if (cursor->data && strcmp (cursor->data, uid) == 0)
 307                         return TRUE;
 308                 cursor = g_slist_next (cursor);
 309         }
 310         return FALSE;
 311 }
 312
 313
 314 /* remove all from the list have have uid = uid */
 315 static GSList*
 316 remove_uid (GSList *list, const gchar *uid)
 317 {
 318         GSList *cursor = list, *start = list;
 319
 320         if (!uid)
 321                 return FALSE;
 322
 323         while (cursor) {
 324                 GSList *next = g_slist_next (cursor);
 325                 if (cursor->data && strcmp (cursor->data, uid) == 0) {
 326                         g_free (cursor->data);
 327                         start = g_slist_delete_link (start, cursor);
 328                 }
 329                 cursor = next;
 330         }
 331         return start;
 332 }
 333
 334
 335 static GSList *
 336 append_uid (GSList *list, const gchar *uid)
 337 {
 338         return g_slist_append (list, g_strdup(uid));
 339 }
 340
 341
 342
 343 void
 344 modest_window_mgr_register_header (ModestWindowMgr *self,  TnyHeader *header, const gchar *alt_uid)
 345 {
 346         ModestWindowMgrPrivate *priv;
 347         gchar* uid;
 348
 349         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 350         g_return_if_fail (TNY_IS_HEADER(header));
 351
 352         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 353         uid = modest_tny_folder_get_header_unique_id (header);
 354
 355         if (uid == NULL)
 356                 uid = g_strdup (alt_uid);
 357
 358         if (!has_uid (priv->preregistered_uids, uid)) {
 359                 MODEST_DEBUG_BLOCK(g_debug ("registering new uid %s", uid););
 360                 priv->preregistered_uids = append_uid (priv->preregistered_uids, uid);
 361         } else
 362                 MODEST_DEBUG_BLOCK(g_debug ("already had uid %s", uid););
 363
 364         g_free (uid);
 365 }
 366
 367 void
 368 modest_window_mgr_unregister_header (ModestWindowMgr *self,  TnyHeader *header)
 369 {
 370         ModestWindowMgrPrivate *priv;
 371         gchar* uid;
 372
 373         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 374         g_return_if_fail (TNY_IS_HEADER(header));
 375
 376         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 377         uid = modest_tny_folder_get_header_unique_id (header);
 378
 379         if (!has_uid (priv->preregistered_uids, uid)) {
 380                 MODEST_DEBUG_BLOCK(g_debug ("trying to unregister non-existing uid %s", uid););
 381                 priv->preregistered_uids = append_uid (priv->preregistered_uids, uid);
 382         } else
 383                 MODEST_DEBUG_BLOCK(g_debug ("unregistering uid %s", uid););
 384
 385         if (has_uid (priv->preregistered_uids, uid)) {
 386                 priv->preregistered_uids = remove_uid (priv->preregistered_uids, uid);
 387                 if (has_uid (priv->preregistered_uids, uid))
 388                         g_debug ("BUG: uid %s NOT removed", uid);
 389                 else
 390                         MODEST_DEBUG_BLOCK(g_debug ("uid %s removed", uid););
 391         }
 392
 393         g_free (uid);
 394 }
 395
 396
 397 #define MODEST_WINDOW_HELP_ID_PARAM "help-id"
 398
 399 void
 400 modest_window_mgr_register_help_id (ModestWindowMgr *self, GtkWindow *win, const gchar* help_id)
 401 {
 402         /* we don't need 'self', but for API consistency... */
 403         g_return_if_fail (self && MODEST_IS_WINDOW_MGR(self));
 404
 405         g_return_if_fail (win && GTK_IS_WINDOW(win));
 406         g_return_if_fail (help_id);
 407
 408         g_object_set_data_full (G_OBJECT(win), MODEST_WINDOW_HELP_ID_PARAM,
 409                                 g_strdup(help_id), g_free);
 410 }
 411
 412
 413 const gchar*
 414 modest_window_mgr_get_help_id (ModestWindowMgr *self, GtkWindow *win)
 415 {
 416         const gchar* help_id = NULL;
 417
 418         /* we don't need 'self', but for API consistency... */
 419         g_return_val_if_fail (self && MODEST_IS_WINDOW_MGR(self), NULL);
 420
 421         g_return_val_if_fail (win, NULL);
 422         g_return_val_if_fail (GTK_IS_WINDOW(win), NULL);
 423
 424         if (MODEST_IS_MAIN_WINDOW (win)) {
 425                 GtkWidget *folder_view;
 426                 TnyFolderStore *folder_store;
 427
 428                 /* Get selected folder */
 429                 folder_view = modest_main_window_get_child_widget (MODEST_MAIN_WINDOW (win),
 430                                                                    MODEST_MAIN_WINDOW_WIDGET_TYPE_FOLDER_VIEW);
 431                 folder_store = modest_folder_view_get_selected (MODEST_FOLDER_VIEW (folder_view));
 432
 433                 /* Switch help_id */
 434                 if (folder_store && TNY_IS_FOLDER (folder_store)) {
 435                         help_id = modest_tny_folder_get_help_id (TNY_FOLDER (folder_store));
 436                         if (!help_id)
 437                                 g_warning ("%s: BUG: did not get a valid help_id", __FUNCTION__);
 438                 }
 439                 if (folder_store)
 440                         g_object_unref (folder_store);
 441         }
 442
 443         if (!help_id)
 444                 help_id = g_object_get_data (G_OBJECT(win), MODEST_WINDOW_HELP_ID_PARAM);
 445
 446         return help_id;
 447 }
 448
 449 static gint
 450 compare_msguids (ModestWindow *win,
 451                  const gchar *uid)
 452 {
 453         const gchar *msg_uid;
 454
 455         if ((!MODEST_IS_MSG_EDIT_WINDOW (win)) && (!MODEST_IS_MSG_VIEW_WINDOW (win)))
 456                 return 1;
 457
 458         /* Get message uid from msg window */
 459         if (MODEST_IS_MSG_EDIT_WINDOW (win)) {
 460                 msg_uid = modest_msg_edit_window_get_message_uid (MODEST_MSG_EDIT_WINDOW (win));
 461                 if (msg_uid && uid &&!strcmp (msg_uid, uid))
 462                         return 0;
 463         } else {
 464                 msg_uid = modest_msg_view_window_get_message_uid (MODEST_MSG_VIEW_WINDOW (win));
 465         }
 466
 467         if (msg_uid && uid &&!strcmp (msg_uid, uid))
 468                 return 0;
 469         else
 470                 return 1;
 471 }
 472
 473 void
 474 modest_window_mgr_close_all_windows (ModestWindowMgr *self)
 475 {
 476         ModestWindowMgrPrivate *priv = NULL;
 477         gboolean ret_value = FALSE;
 478
 479         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 480         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 481
 482         /* If there is a main window then try to close it, and it will
 483            close the others if needed */
 484         if (priv->main_window) {
 485                 g_signal_emit_by_name (priv->main_window, "delete-event", NULL, &ret_value);
 486         } else {
 487                 GList *wins = NULL, *next = NULL;
 488
 489                 /* delete-event handler actually removes window_list item, */
 490                 wins = priv->window_list;
 491                 while (wins) {
 492                         next = g_list_next (wins);
 493                         g_signal_emit_by_name (G_OBJECT (wins->data), "delete-event", NULL, &ret_value);
 494                         wins = next;
 495                 }
 496         }
 497 }
 498
 499
 500 gboolean
 501 modest_window_mgr_find_registered_header (ModestWindowMgr *self, TnyHeader *header,
 502                                           ModestWindow **win)
 503 {
 504         ModestWindowMgrPrivate *priv = NULL;
 505         gchar* uid = NULL;
 506         gboolean has_header, has_window = FALSE;
 507         GList *item = NULL;
 508
 509         g_return_val_if_fail (MODEST_IS_WINDOW_MGR (self), FALSE);
 510         g_return_val_if_fail (TNY_IS_HEADER(header), FALSE);
 511
 512         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 513
 514         uid = modest_tny_folder_get_header_unique_id (header);
 515
 516         if (win)
 517                 *win = NULL;
 518
 519         has_header = has_uid (priv->preregistered_uids, uid);
 520
 521         item = g_list_find_custom (priv->window_list, uid, (GCompareFunc) compare_msguids);
 522         if (item) {
 523                 has_window = TRUE;
 524                 if (win) {
 525                         if ((!MODEST_IS_MSG_VIEW_WINDOW(item->data)) &&
 526                             (!MODEST_IS_MSG_EDIT_WINDOW (item->data)))
 527                                 g_debug ("not a valid window!");
 528                         else {
 529                                 g_debug ("found a window");
 530                                 *win = MODEST_WINDOW (item->data);
 531                         }
 532                 }
 533         }
 534         g_free (uid);
 535
 536         return has_header || has_window;
 537 }
 538
 539 static const gchar *
 540 get_show_toolbar_key (GType window_type,
 541                       gboolean fullscreen)
 542 {
 543         const gchar *key = NULL;
 544
 545         if (window_type == MODEST_TYPE_MAIN_WINDOW)
 546                 key = (fullscreen) ?
 547                         MODEST_CONF_MAIN_WINDOW_SHOW_TOOLBAR_FULLSCREEN :
 548                         MODEST_CONF_MAIN_WINDOW_SHOW_TOOLBAR;
 549         else if (window_type == MODEST_TYPE_MSG_VIEW_WINDOW)
 550                 key = (fullscreen) ?
 551                         MODEST_CONF_MSG_VIEW_WINDOW_SHOW_TOOLBAR_FULLSCREEN :
 552                         MODEST_CONF_MSG_VIEW_WINDOW_SHOW_TOOLBAR;
 553         else if (window_type ==  MODEST_TYPE_MSG_EDIT_WINDOW)
 554                 key = (fullscreen) ?
 555                         MODEST_CONF_EDIT_WINDOW_SHOW_TOOLBAR_FULLSCREEN :
 556                         MODEST_CONF_EDIT_WINDOW_SHOW_TOOLBAR;
 557         else
 558                 g_return_val_if_reached (NULL);
 559
 560         return key;
 561 }
 562
 563 void
 564 modest_window_mgr_register_window (ModestWindowMgr *self,
 565                                    ModestWindow *window)
 566 {
 567         GList *win;
 568         ModestWindowMgrPrivate *priv;
 569         gint *handler_id;
 570         const gchar *key;
 571
 572         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 573         g_return_if_fail (GTK_IS_WINDOW (window));
 574
 575         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 576
 577         win = g_list_find (priv->window_list, window);
 578         if (win) {
 579                 /* this is for the case we want to register the window and it was already
 580                  * registered. We leave silently.
 581                  */
 582                 return;
 583         }
 584
 585         /* Check that it's not a second main window */
 586         if (MODEST_IS_MAIN_WINDOW (window)) {
 587                 if (priv->main_window) {
 588                         g_warning ("%s: trying to register a second main window",
 589                                    __FUNCTION__);
 590                         return;
 591                 } else {
 592                         priv->main_window = window;
 593                         load_new_view (self);
 594                         load_new_editor (self);
 595                 }
 596         }
 597
 598         /* remove from the list of pre-registered uids */
 599         if (MODEST_IS_MSG_VIEW_WINDOW(window)) {
 600                 const gchar *uid = modest_msg_view_window_get_message_uid
 601                         (MODEST_MSG_VIEW_WINDOW (window));
 602
 603                 if (!has_uid (priv->preregistered_uids, uid))
 604                         g_debug ("weird: no uid for window (%s)", uid);
 605
 606                 MODEST_DEBUG_BLOCK(g_debug ("registering window for %s", uid ? uid : "<none>"););
 607
 608                 priv->preregistered_uids =
 609                         remove_uid (priv->preregistered_uids,
 610                                     modest_msg_view_window_get_message_uid
 611                                     (MODEST_MSG_VIEW_WINDOW (window)));
 612         } else if (MODEST_IS_MSG_EDIT_WINDOW(window)) {
 613                 const gchar *uid = modest_msg_edit_window_get_message_uid
 614                         (MODEST_MSG_EDIT_WINDOW (window));
 615
 616                 MODEST_DEBUG_BLOCK(g_debug ("registering window for %s", uid););
 617
 618                 priv->preregistered_uids =
 619                         remove_uid (priv->preregistered_uids,
 620                                     modest_msg_edit_window_get_message_uid
 621                                     (MODEST_MSG_EDIT_WINDOW (window)));
 622         }
 623
 624         /* Add to list. Keep a reference to the window */
 625         g_object_ref (window);
 626         priv->window_list = g_list_prepend (priv->window_list, window);
 627
 628         /* Listen to object destruction */
 629         handler_id = g_malloc0 (sizeof (gint));
 630         *handler_id = g_signal_connect (window, "delete-event", G_CALLBACK (on_window_destroy), self);
 631         g_hash_table_insert (priv->destroy_handlers, window, handler_id);
 632
 633         /* If there is a msg view window, let the main window listen the msg-changed signal */
 634         if (MODEST_IS_MSG_VIEW_WINDOW(window) && priv->main_window) {
 635                 gulong *handler;
 636                 handler = g_malloc0 (sizeof (gulong));
 637                 *handler = g_signal_connect (window, "msg-changed",
 638                                              G_CALLBACK (modest_main_window_on_msg_view_window_msg_changed),
 639                                              priv->main_window);
 640                 g_hash_table_insert (priv->viewer_handlers, window, handler);
 641         }
 642
 643         /* Put into fullscreen if needed */
 644         if (priv->fullscreen_mode)
 645                 gtk_window_fullscreen (GTK_WINDOW (window));
 646
 647         /* Show/hide toolbar & fullscreen */
 648         key = get_show_toolbar_key (G_TYPE_FROM_INSTANCE (window), priv->fullscreen_mode);
 649         modest_window_show_toolbar (window, modest_conf_get_bool (modest_runtime_get_conf (), key, NULL));
 650 }
 651
 652 static gboolean
 653 on_window_destroy (ModestWindow *window,
 654                    GdkEvent *event,
 655                    ModestWindowMgr *self)
 656 {
 657         gint dialog_response = GTK_RESPONSE_NONE;
 658
 659         /* Specific stuff first */
 660         if (MODEST_IS_MAIN_WINDOW (window)) {
 661                 ModestWindowMgrPrivate *priv;
 662                 priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 663
 664                 /* If more than one window already opened */
 665                 if (g_list_length (priv->window_list) > 1) {
 666
 667                         /* Present the window if it's not visible now */
 668                         if (!gtk_window_has_toplevel_focus (GTK_WINDOW (window)))
 669                                 gtk_window_present (GTK_WINDOW (window));
 670                         /* Create the confirmation dialog MSG-NOT308 */
 671                         dialog_response = modest_platform_run_confirmation_dialog (
 672                                         GTK_WINDOW (window), _("emev_nc_close_windows"));
 673
 674                         /* If the user wants to close all the windows */
 675                         if ((dialog_response == GTK_RESPONSE_OK)
 676                                         || (dialog_response == GTK_RESPONSE_ACCEPT)
 677                                         || (dialog_response == GTK_RESPONSE_YES))
 678                                 {
 679                                         GList *iter = priv->window_list;
 680                                         do {
 681                                                 if (iter->data != window) {
 682                                                         GList *tmp = iter->next;
 683                                                         on_window_destroy (MODEST_WINDOW (iter->data),
 684                                                                         event,
 685                                                                         self);
 686                                                         iter = tmp;
 687                                                 } else {
 688                                                         iter = g_list_next (iter);
 689                                                 }
 690                                         } while (iter);
 691                                 }
 692                         else
 693                                 {
 694                                         return TRUE;
 695                                 }
 696                 }
 697         }
 698         else {
 699                 if (MODEST_IS_MSG_EDIT_WINDOW (window)) {
 700                         gboolean sent = FALSE;
 701                         gint response = GTK_RESPONSE_ACCEPT;
 702                         sent = modest_msg_edit_window_get_sent (MODEST_MSG_EDIT_WINDOW (window));
 703                         /* Save currently edited message to Drafts if it was not sent */
 704                         if (!sent && modest_msg_edit_window_is_modified (MODEST_MSG_EDIT_WINDOW (window))) {
 705
 706                                 /* Raise the window if it's minimized */
 707                                 if (!gtk_window_has_toplevel_focus (GTK_WINDOW (window)))
 708                                         gtk_window_present (GTK_WINDOW (window));
 709
 710                                 response =
 711                                         modest_platform_run_confirmation_dialog (GTK_WINDOW (window),
 712                                                                                  _("mcen_nc_no_email_message_modified_save_changes"));
 713                                 /* Save to drafts */
 714                                 if (response != GTK_RESPONSE_CANCEL)
 715                                         modest_ui_actions_on_save_to_drafts (NULL, MODEST_MSG_EDIT_WINDOW (window));
 716                         }
 717                 }
 718         }
 719
 720         /* Unregister window */
 721         modest_window_mgr_unregister_window (self, window);
 722
 723         return FALSE;
 724 }
 725
 726 static void
 727 disconnect_msg_changed (gpointer key,
 728                         gpointer value,
 729                         gpointer user_data)
 730 {
 731         guint handler_id;
 732         handler_id = GPOINTER_TO_UINT(value);
 733
 734         if (key && G_IS_OBJECT(key))
 735                 g_signal_handler_disconnect (G_OBJECT (key), handler_id);
 736 }
 737
 738 void
 739 modest_window_mgr_unregister_window (ModestWindowMgr *self,
 740                                      ModestWindow *window)
 741 {
 742         GList *win;
 743         ModestWindowMgrPrivate *priv;
 744         gulong *tmp, handler_id;
 745
 746         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 747         g_return_if_fail (MODEST_IS_WINDOW (window));
 748
 749         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 750
 751         win = g_list_find (priv->window_list, window);
 752         if (!win) {
 753                 g_warning ("Trying to unregister a window that has not being registered yet");
 754                 return;
 755         }
 756
 757         /* If it's the main window unset it */
 758         if (priv->main_window == window) {
 759                 priv->main_window = NULL;
 760
 761                 /* Disconnect all emissions of msg-changed */
 762                 if (priv->viewer_handlers) {
 763                         g_hash_table_foreach (priv->viewer_handlers,
 764                                               disconnect_msg_changed,
 765                                               NULL);
 766                         g_hash_table_destroy (priv->viewer_handlers);
 767                         priv->viewer_handlers = NULL;
 768                 }
 769         }
 770
 771         /* Remove the viewer window handler from the hash table. The
 772            HashTable could not exist if the main window was closeed
 773            when there were other windows remaining */
 774         if (MODEST_IS_MSG_VIEW_WINDOW (window) && priv->viewer_handlers) {
 775                 tmp = (gulong *) g_hash_table_lookup (priv->viewer_handlers, window);
 776                 /* If the viewer was created without a main window
 777                    (for example when opening a message through D-Bus
 778                    the viewer handlers was not registered */
 779                 if (tmp) {
 780                         g_signal_handler_disconnect (window, *tmp);
 781                         g_hash_table_remove (priv->viewer_handlers, window);
 782                 }
 783         }
 784
 785         /* Save state */
 786         modest_window_save_state (window);
 787
 788         /* Remove from list & hash table */
 789         priv->window_list = g_list_remove_link (priv->window_list, win);
 790         tmp = g_hash_table_lookup (priv->destroy_handlers, window);
 791         handler_id = *tmp;
 792         g_hash_table_remove (priv->destroy_handlers, window);
 793
 794         /* cancel open and receive operations */
 795         if (MODEST_IS_MSG_VIEW_WINDOW (window)) {
 796                 ModestMailOperationTypeOperation type;
 797                 GSList* pending_ops = NULL;
 798                 GSList* tmp_list = NULL;
 799                 pending_ops = modest_mail_operation_queue_get_by_source (
 800                                 modest_runtime_get_mail_operation_queue (),
 801                                 G_OBJECT (window));
 802                 while (pending_ops != NULL) {
 803                         type = modest_mail_operation_get_type_operation (MODEST_MAIL_OPERATION (pending_ops->data));
 804                         if (type == MODEST_MAIL_OPERATION_TYPE_RECEIVE || type == MODEST_MAIL_OPERATION_TYPE_OPEN) {
 805                                 modest_mail_operation_cancel (pending_ops->data);
 806                         }
 807                         g_object_unref (G_OBJECT (pending_ops->data));
 808                         tmp_list = pending_ops;
 809                         pending_ops = g_slist_next (pending_ops);
 810                         g_slist_free_1 (tmp_list);
 811                 }
 812         }
 813
 814         /* Disconnect the "delete-event" handler, we won't need it anymore */
 815         g_signal_handler_disconnect (window, handler_id);
 816
 817         /* Disconnect all the window signals */
 818         modest_window_disconnect_signals (window);
 819
 820         /* Destroy the window */
 821         gtk_widget_destroy (win->data);
 822
 823         /* If there are no more windows registered emit the signal */
 824         if (priv->window_list == NULL && priv->banner_counter == 0)
 825                 g_signal_emit (self, signals[WINDOW_LIST_EMPTY_SIGNAL], 0);
 826 }
 827
 828
 829
 830 void
 831 modest_window_mgr_set_fullscreen_mode (ModestWindowMgr *self,
 832                                        gboolean on)
 833 {
 834         ModestWindowMgrPrivate *priv;
 835         GList *win = NULL;
 836         ModestConf *conf;
 837
 838         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 839
 840         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 841
 842         /* If there is no change do nothing */
 843         if (priv->fullscreen_mode == on)
 844                 return;
 845
 846         priv->fullscreen_mode = on;
 847
 848         conf = modest_runtime_get_conf ();
 849
 850         /* Update windows */
 851         win = priv->window_list;
 852         while (win) {
 853                 gboolean show;
 854                 const gchar *key = NULL;
 855
 856                 /* Getting this from gconf everytime is not that
 857                    expensive, we'll do it just a few times */
 858                 key = get_show_toolbar_key (G_TYPE_FROM_INSTANCE (win->data), on);
 859                 show = modest_conf_get_bool (conf, key, NULL);
 860
 861                 /* Set fullscreen/unfullscreen */
 862                 if (on)
 863                         gtk_window_fullscreen (GTK_WINDOW (win->data));
 864                 else
 865                         gtk_window_unfullscreen (GTK_WINDOW (win->data));
 866
 867                 /* Show/Hide toolbar */
 868                 modest_window_show_toolbar (MODEST_WINDOW (win->data), show);
 869
 870                 win = g_list_next (win);
 871         }
 872 }
 873
 874 gboolean
 875 modest_window_mgr_get_fullscreen_mode (ModestWindowMgr *self)
 876 {
 877         ModestWindowMgrPrivate *priv;
 878
 879         g_return_val_if_fail (MODEST_IS_WINDOW_MGR (self), FALSE);
 880
 881         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 882
 883         return priv->fullscreen_mode;
 884 }
 885
 886 void
 887 modest_window_mgr_show_toolbars (ModestWindowMgr *self,
 888                                  GType window_type,
 889                                  gboolean show_toolbars,
 890                                  gboolean fullscreen)
 891 {
 892         ModestWindowMgrPrivate *priv;
 893         ModestConf *conf;
 894         const gchar *key = NULL;
 895
 896         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 897
 898         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 899         conf = modest_runtime_get_conf ();
 900
 901         /* If nothing changes then return */
 902         key = get_show_toolbar_key (window_type, fullscreen);
 903         conf = modest_runtime_get_conf ();
 904         if (modest_conf_get_bool (conf, key, NULL) == show_toolbars)
 905                 return;
 906
 907         /* Save in conf */
 908         modest_conf_set_bool (conf, key, show_toolbars, NULL);
 909
 910         /* Apply now if the view mode is the right one */
 911         if ((fullscreen && priv->fullscreen_mode) ||
 912             (!fullscreen && !priv->fullscreen_mode)) {
 913
 914                 GList *win = priv->window_list;
 915
 916                 while (win) {
 917                         if (G_TYPE_FROM_INSTANCE (win->data) == window_type)
 918                                 modest_window_show_toolbar (MODEST_WINDOW (win->data),
 919                                                             show_toolbars);
 920                         win = g_list_next (win);
 921                 }
 922         }
 923 }
 924
 925 ModestWindow*
 926 modest_window_mgr_get_main_window (ModestWindowMgr *self, gboolean create)
 927 {
 928         ModestWindowMgrPrivate *priv;
 929
 930         g_return_val_if_fail (MODEST_IS_WINDOW_MGR (self), NULL);
 931         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 932
 933         /* create the main window, if it hasn't been created yet */
 934         if (!priv->main_window && create) {
 935                 /* modest_window_mgr_register_window will set priv->main_window */
 936                 modest_window_mgr_register_window (self, modest_main_window_new ());
 937                 MODEST_DEBUG_BLOCK(
 938                         g_debug ("%s: created main window: %p\n", __FUNCTION__, priv->main_window);
 939                 );
 940         }
 941
 942         return priv->main_window;
 943 }
 944
 945
 946 gboolean
 947 modest_window_mgr_main_window_exists  (ModestWindowMgr *self)
 948 {
 949         ModestWindowMgrPrivate *priv;
 950
 951         g_return_val_if_fail (MODEST_IS_WINDOW_MGR (self), FALSE);
 952         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 953
 954         return priv->main_window != NULL;
 955 }
 956
 957
 958 GtkWindow *
 959 modest_window_mgr_get_modal (ModestWindowMgr *self)
 960 {
 961         ModestWindowMgrPrivate *priv;
 962
 963         g_return_val_if_fail (MODEST_IS_WINDOW_MGR (self), NULL);
 964         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 965
 966         return g_queue_peek_head (priv->modal_windows);
 967 }
 968
 969
 970 void
 971 modest_window_mgr_set_modal (ModestWindowMgr *self,
 972                              GtkWindow *window)
 973 {
 974         GtkWindow *old_modal;
 975         ModestWindowMgrPrivate *priv;
 976
 977         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
 978         g_return_if_fail (GTK_IS_WINDOW (window));
 979
 980         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
 981         g_mutex_lock (priv->queue_lock);
 982         old_modal = g_queue_peek_head (priv->modal_windows);
 983         g_mutex_unlock (priv->queue_lock);
 984
 985         if (!old_modal) {
 986                 gtk_window_set_modal (window, TRUE);
 987         } else {
 988                 /* un-modalize the old one; the one on top should be the
 989                  * modal one */
 990                 gtk_window_set_transient_for (window, GTK_WINDOW(old_modal));
 991                 gtk_window_set_modal (window, TRUE);
 992         }
 993
 994         /* this will be the new modal window */
 995         g_mutex_lock (priv->queue_lock);
 996         g_queue_push_head (priv->modal_windows, window);
 997         g_mutex_unlock (priv->queue_lock);
 998
 999         if (GTK_IS_DIALOG (window))
1000                 /* Note that response is not always enough because it
1001                    could be captured and removed easily by dialogs but
1002                    works for most of situations */
1003                 priv->modal_handler_uids =
1004                         modest_signal_mgr_connect (priv->modal_handler_uids,
1005                                                    G_OBJECT (window),
1006                                                    "response",
1007                                                    G_CALLBACK (on_modal_dialog_close),
1008                                                    self);
1009         else
1010                 priv->modal_handler_uids =
1011                         modest_signal_mgr_connect (priv->modal_handler_uids,
1012                                                    G_OBJECT (window),
1013                                                    "delete-event",
1014                                                    G_CALLBACK (on_modal_window_close),
1015                                                    self);
1016 }
1017
1018
1019 static void
1020 on_nonhibernating_window_hide(GtkWidget *widget, gpointer user_data)
1021 {
1022         ModestWindowMgr *self = MODEST_WINDOW_MGR (user_data);
1023         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1024
1025         /* Forget this window,
1026          * so hibernation will be allowed again if no windows are remembered: */
1027         priv->windows_that_prevent_hibernation =
1028                 g_slist_remove (priv->windows_that_prevent_hibernation, GTK_WINDOW(widget));
1029 }
1030
1031 static void
1032 on_nonhibernating_window_show(GtkWidget *widget, gpointer user_data)
1033 {
1034         ModestWindowMgr *self = MODEST_WINDOW_MGR (user_data);
1035         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1036
1037         GtkWindow *window = GTK_WINDOW (widget);
1038
1039         priv->windows_that_prevent_hibernation =
1040                         g_slist_append (priv->windows_that_prevent_hibernation, window);
1041
1042         /* Allow hibernation again when the window has been hidden: */
1043         g_signal_connect (window, "hide",
1044                 G_CALLBACK (on_nonhibernating_window_hide), self);
1045 }
1046
1047 void
1048 modest_window_mgr_prevent_hibernation_while_window_is_shown (ModestWindowMgr *self,
1049                                                                   GtkWindow *window)
1050 {
1051         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
1052
1053         if (GTK_WIDGET_VISIBLE(window)) {
1054                 on_nonhibernating_window_show (GTK_WIDGET (window), self);
1055         } else {
1056                 /* Wait for it to be shown: */
1057                 g_signal_connect (window, "show",
1058                         G_CALLBACK (on_nonhibernating_window_show), self);
1059         }
1060 }
1061
1062 gboolean
1063 modest_window_mgr_get_hibernation_is_prevented (ModestWindowMgr *self)
1064 {
1065         g_return_val_if_fail (MODEST_IS_WINDOW_MGR (self), FALSE);
1066
1067         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1068
1069         /* Prevent hibernation if any open windows are currently
1070          * preventing hibernation: */
1071         return (g_slist_length (priv->windows_that_prevent_hibernation) > 0);
1072 }
1073
1074
1075 void
1076 modest_window_mgr_save_state_for_all_windows (ModestWindowMgr *self)
1077 {
1078         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
1079
1080         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1081
1082         /* Iterate over all windows */
1083         GList *win = priv->window_list;
1084         while (win) {
1085                 ModestWindow *window = MODEST_WINDOW (win->data);
1086                 if (window) {
1087                         /* This calls the vfunc,
1088                          * so each window can do its own thing: */
1089                         modest_window_save_state (window);
1090                 }
1091
1092                 win = g_list_next (win);
1093         }
1094 }
1095
1096 static gboolean
1097 idle_top_modal (gpointer data)
1098 {
1099         ModestWindowMgr *self = MODEST_WINDOW_MGR (data);
1100         ModestWindowMgrPrivate *priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1101         GtkWindow *topmost;
1102
1103         /* Get the top modal */
1104         g_mutex_lock (priv->queue_lock);
1105         topmost = (GtkWindow *) g_queue_peek_head (priv->modal_windows);
1106         g_mutex_unlock (priv->queue_lock);
1107
1108         /* Show it */
1109         if (topmost)
1110                 gtk_window_present (topmost);
1111
1112         return FALSE;
1113 }
1114
1115 static void
1116 remove_modal_from_queue (GtkWidget *widget,
1117                          ModestWindowMgr *self)
1118 {
1119         ModestWindowMgrPrivate *priv;
1120         GList *item = NULL;
1121
1122         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1123
1124         /* Remove from queue. We don't use remove, because we want to
1125            exit if the widget does not belong to the queue */
1126         g_mutex_lock (priv->queue_lock);
1127         item = g_queue_find (priv->modal_windows, widget);
1128         if (!item) {
1129                 g_warning ("Trying to remove a modal window that is not registered");
1130                 g_mutex_unlock (priv->queue_lock);
1131                 return;
1132         }
1133         g_queue_unlink (priv->modal_windows, item);
1134         g_mutex_unlock (priv->queue_lock);
1135
1136         /* Disconnect handler */
1137         priv->modal_handler_uids =
1138                 modest_signal_mgr_disconnect (priv->modal_handler_uids,
1139                                               G_OBJECT (widget),
1140                                               GTK_IS_DIALOG (widget) ?
1141                                               "response" :
1142                                               "destroy-event");
1143
1144         /* Schedule the next one for being shown */
1145         g_idle_add (idle_top_modal, self);
1146 }
1147
1148 static gboolean
1149 on_modal_window_close (GtkWidget *widget,
1150                        GdkEvent *event,
1151                        gpointer user_data)
1152 {
1153         ModestWindowMgr *self = MODEST_WINDOW_MGR (user_data);
1154
1155         /* Remove modal window from queue */
1156         remove_modal_from_queue (widget, self);
1157
1158         /* Continue */
1159         return FALSE;
1160 }
1161
1162 static void
1163 on_modal_dialog_close (GtkDialog *dialog,
1164                        gint arg1,
1165                        gpointer user_data)
1166 {
1167         ModestWindowMgr *self = MODEST_WINDOW_MGR (user_data);
1168
1169         /* Remove modal window from queue */
1170         remove_modal_from_queue (GTK_WIDGET (dialog), self);
1171 }
1172
1173 gint
1174 modest_window_mgr_num_windows (ModestWindowMgr *self)
1175 {
1176         ModestWindowMgrPrivate *priv;
1177         gint num_windows = 0;
1178
1179         g_return_val_if_fail (self && MODEST_IS_WINDOW_MGR(self), -1);
1180
1181         priv =  MODEST_WINDOW_MGR_GET_PRIVATE(self);
1182
1183         if (priv->window_list)
1184                 num_windows = g_list_length (priv->window_list);
1185
1186         return num_windows + priv->banner_counter;
1187 }
1188
1189 GtkWidget *
1190 modest_window_mgr_get_msg_edit_window (ModestWindowMgr *self)
1191 {
1192         GtkWidget *result;
1193         ModestWindowMgrPrivate *priv;
1194
1195         g_return_val_if_fail (self && MODEST_IS_WINDOW_MGR(self), NULL);
1196
1197         priv = MODEST_WINDOW_MGR_GET_PRIVATE(self);
1198
1199         if (priv->cached_editor) {
1200                 result = priv->cached_editor;
1201                 priv->cached_editor = NULL;
1202                 load_new_editor (self);
1203         } else {
1204                 result = g_object_new (MODEST_TYPE_MSG_EDIT_WINDOW, NULL);
1205         }
1206
1207         return result;
1208 }
1209
1210 GtkWidget *
1211 modest_window_mgr_get_msg_view_window (ModestWindowMgr *self)
1212 {
1213         GtkWidget *result;
1214         ModestWindowMgrPrivate *priv;
1215
1216         g_return_val_if_fail (self && MODEST_IS_WINDOW_MGR(self), NULL);
1217
1218         priv = MODEST_WINDOW_MGR_GET_PRIVATE(self);
1219
1220         if (priv->cached_view) {
1221                 result = priv->cached_view;
1222                 priv->cached_view = NULL;
1223                 load_new_view (self);
1224         } else {
1225                 result = g_object_new (MODEST_TYPE_MSG_VIEW_WINDOW, NULL);
1226         }
1227
1228         return result;
1229 }
1230
1231 void
1232 modest_window_mgr_register_banner (ModestWindowMgr *self)
1233 {
1234         ModestWindowMgrPrivate *priv;
1235
1236         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
1237         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1238
1239         priv->banner_counter++;
1240
1241 }
1242
1243 void
1244 modest_window_mgr_unregister_banner (ModestWindowMgr *self)
1245 {
1246         ModestWindowMgrPrivate *priv;
1247
1248         g_return_if_fail (MODEST_IS_WINDOW_MGR (self));
1249         priv = MODEST_WINDOW_MGR_GET_PRIVATE (self);
1250
1251         priv->banner_counter--;
1252         if (priv->window_list == NULL && priv->banner_counter == 0) {
1253                 g_signal_emit (self, signals[WINDOW_LIST_EMPTY_SIGNAL], 0);
1254         }
1255
1256 }