git.maemo.org Git - modest/blob - src/hildon2/modest-hildon2-window-mgr.c

   1 /* Copyright (c) 2008, 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 <hildon/hildon.h>
  32 #include "modest-hildon2-window.h"
  33 #include "modest-hildon2-window-mgr.h"
  34 #include "modest-msg-edit-window.h"
  35 #include "modest-mailboxes-window.h"
  36 #include "modest-header-window.h"
  37 #include "modest-main-window.h"
  38 #include "modest-conf.h"
  39 #include "modest-defs.h"
  40 #include "modest-signal-mgr.h"
  41 #include "modest-runtime.h"
  42 #include "modest-platform.h"
  43 #include "modest-ui-actions.h"
  44 #include "modest-debug.h"
  45 #include "modest-tny-folder.h"
  46 #include "modest-folder-window.h"
  47 #include "modest-accounts-window.h"
  48 #include "modest-maemo-utils.h"
  49 #include "modest-utils.h"
  50 #include "modest-tny-msg.h"
  51 #include <tny-merge-folder.h>
  52
  53 /* 'private'/'protected' functions */
  54 static void modest_hildon2_window_mgr_class_init (ModestHildon2WindowMgrClass *klass);
  55 static void modest_hildon2_window_mgr_instance_init (ModestHildon2WindowMgr *obj);
  56 static void modest_hildon2_window_mgr_finalize   (GObject *obj);
  57
  58 static gboolean on_window_destroy        (ModestWindow *window,
  59                                           GdkEvent *event,
  60                                           ModestHildon2WindowMgr *self);
  61
  62 static gboolean modest_hildon2_window_mgr_register_window (ModestWindowMgr *self,
  63                                                            ModestWindow *window,
  64                                                            ModestWindow *parent);
  65 static void modest_hildon2_window_mgr_unregister_window (ModestWindowMgr *self,
  66                                                          ModestWindow *window);
  67 static void modest_hildon2_window_mgr_set_fullscreen_mode (ModestWindowMgr *self,
  68                                                            gboolean on);
  69 static gboolean modest_hildon2_window_mgr_get_fullscreen_mode (ModestWindowMgr *self);
  70 static void modest_hildon2_window_mgr_show_toolbars (ModestWindowMgr *self,
  71                                                      GType window_type,
  72                                                      gboolean show_toolbars,
  73                                                      gboolean fullscreen);
  74 static ModestWindow* modest_hildon2_window_mgr_get_main_window (ModestWindowMgr *self, gboolean show);
  75 static GtkWindow *modest_hildon2_window_mgr_get_modal (ModestWindowMgr *self);
  76 static void modest_hildon2_window_mgr_set_modal (ModestWindowMgr *self,
  77                                                  GtkWindow *window,
  78                                                  GtkWindow *parent);
  79 static gboolean modest_hildon2_window_mgr_find_registered_header (ModestWindowMgr *self,
  80                                                                   TnyHeader *header,
  81                                                                   ModestWindow **win);
  82 static gboolean modest_hildon2_window_mgr_find_registered_message_uid (ModestWindowMgr *self,
  83                                                                        const gchar *msg_uid,
  84                                                                        ModestWindow **win);
  85 static GList *modest_hildon2_window_mgr_get_window_list (ModestWindowMgr *self);
  86 static gboolean modest_hildon2_window_mgr_close_all_windows (ModestWindowMgr *self);
  87 static gboolean window_can_close (ModestWindow *window);
  88 static gboolean window_has_modals (ModestWindow *window);
  89 static ModestWindow *modest_hildon2_window_mgr_show_initial_window (ModestWindowMgr *self);
  90 static ModestWindow *modest_hildon2_window_mgr_get_current_top (ModestWindowMgr *self);
  91 static gboolean modest_hildon2_window_mgr_screen_is_on (ModestWindowMgr *self);
  92 static void osso_display_event_cb (osso_display_state_t state,
  93                                    gpointer data);
  94 static void on_account_removed (TnyAccountStore *acc_store,
  95                                 TnyAccount *account,
  96                                 gpointer user_data);
  97
  98 typedef struct _ModestHildon2WindowMgrPrivate ModestHildon2WindowMgrPrivate;
  99 struct _ModestHildon2WindowMgrPrivate {
 100         GList        *window_list;
 101         GMutex       *queue_lock;
 102         GQueue       *modal_windows;
 103
 104         gboolean     fullscreen_mode;
 105
 106         GHashTable   *destroy_handlers;
 107         GHashTable   *viewer_handlers;
 108         GSList       *window_state_uids;
 109
 110         guint        closing_time;
 111
 112         GSList       *modal_handler_uids;
 113         ModestWindow *current_top;
 114
 115         gulong        accounts_handler;
 116
 117         /* Display state */
 118         osso_display_state_t display_state;
 119 };
 120 #define MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
 121                                                                                    MODEST_TYPE_HILDON2_WINDOW_MGR, \
 122                                                                                    ModestHildon2WindowMgrPrivate))
 123 /* globals */
 124 static GObjectClass *parent_class = NULL;
 125
 126 GType
 127 modest_hildon2_window_mgr_get_type (void)
 128 {
 129         static GType my_type = 0;
 130         if (!my_type) {
 131                 static const GTypeInfo my_info = {
 132                         sizeof(ModestHildon2WindowMgrClass),
 133                         NULL,           /* base init */
 134                         NULL,           /* base finalize */
 135                         (GClassInitFunc) modest_hildon2_window_mgr_class_init,
 136                         NULL,           /* class finalize */
 137                         NULL,           /* class data */
 138                         sizeof(ModestHildon2WindowMgr),
 139                         1,              /* n_preallocs */
 140                         (GInstanceInitFunc) modest_hildon2_window_mgr_instance_init,
 141                         NULL
 142                 };
 143                 my_type = g_type_register_static (MODEST_TYPE_WINDOW_MGR,
 144                                                   "ModestHildon2WindowMgr",
 145                                                   &my_info, 0);
 146         }
 147         return my_type;
 148 }
 149
 150 static void
 151 modest_hildon2_window_mgr_class_init (ModestHildon2WindowMgrClass *klass)
 152 {
 153         GObjectClass *gobject_class;
 154         ModestWindowMgrClass *mgr_class;
 155
 156         gobject_class = (GObjectClass*) klass;
 157         mgr_class = (ModestWindowMgrClass *) klass;
 158
 159         parent_class            = g_type_class_peek_parent (klass);
 160         gobject_class->finalize = modest_hildon2_window_mgr_finalize;
 161         mgr_class->register_window = modest_hildon2_window_mgr_register_window;
 162         mgr_class->unregister_window = modest_hildon2_window_mgr_unregister_window;
 163         mgr_class->set_fullscreen_mode = modest_hildon2_window_mgr_set_fullscreen_mode;
 164         mgr_class->get_fullscreen_mode = modest_hildon2_window_mgr_get_fullscreen_mode;
 165         mgr_class->show_toolbars = modest_hildon2_window_mgr_show_toolbars;
 166         mgr_class->get_main_window = modest_hildon2_window_mgr_get_main_window;
 167         mgr_class->get_modal = modest_hildon2_window_mgr_get_modal;
 168         mgr_class->set_modal = modest_hildon2_window_mgr_set_modal;
 169         mgr_class->find_registered_header = modest_hildon2_window_mgr_find_registered_header;
 170         mgr_class->find_registered_message_uid = modest_hildon2_window_mgr_find_registered_message_uid;
 171         mgr_class->get_window_list = modest_hildon2_window_mgr_get_window_list;
 172         mgr_class->close_all_windows = modest_hildon2_window_mgr_close_all_windows;
 173         mgr_class->show_initial_window = modest_hildon2_window_mgr_show_initial_window;
 174         mgr_class->get_current_top = modest_hildon2_window_mgr_get_current_top;
 175         mgr_class->screen_is_on = modest_hildon2_window_mgr_screen_is_on;
 176
 177         g_type_class_add_private (gobject_class, sizeof(ModestHildon2WindowMgrPrivate));
 178
 179 }
 180
 181 static void
 182 modest_hildon2_window_mgr_instance_init (ModestHildon2WindowMgr *obj)
 183 {
 184         ModestHildon2WindowMgrPrivate *priv;
 185
 186         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE(obj);
 187         priv->window_list = NULL;
 188         priv->fullscreen_mode = FALSE;
 189         priv->window_state_uids = NULL;
 190
 191         priv->modal_windows = g_queue_new ();
 192         priv->queue_lock = g_mutex_new ();
 193
 194         /* Could not initialize it from gconf, singletons are not
 195            ready yet */
 196         priv->destroy_handlers = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
 197         priv->viewer_handlers = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
 198
 199         priv->closing_time = 0;
 200
 201         priv->modal_handler_uids = NULL;
 202         priv->display_state = OSSO_DISPLAY_ON;
 203
 204         /* Listen for changes in the screen, we don't want to show a
 205            led pattern when the display is on for example */
 206         osso_hw_set_display_event_cb (modest_maemo_utils_get_osso_context (),
 207                                       osso_display_event_cb,
 208                                       obj);
 209
 210 }
 211
 212 static void
 213 modest_hildon2_window_mgr_finalize (GObject *obj)
 214 {
 215         ModestHildon2WindowMgrPrivate *priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE(obj);
 216         ModestTnyAccountStore *acc_store;
 217
 218         modest_signal_mgr_disconnect_all_and_destroy (priv->window_state_uids);
 219         priv->window_state_uids = NULL;
 220
 221         osso_hw_set_display_event_cb (modest_maemo_utils_get_osso_context (),
 222                                       NULL, NULL);
 223
 224         acc_store = modest_runtime_get_account_store ();
 225         if (acc_store && g_signal_handler_is_connected (acc_store, priv->accounts_handler))
 226                 g_signal_handler_disconnect (acc_store, priv->accounts_handler);
 227
 228         if (priv->window_list) {
 229                 GList *iter = priv->window_list;
 230                 /* unregister pending windows */
 231                 while (iter) {
 232                         ModestWindow *window = (ModestWindow *) iter->data;
 233                         iter = g_list_next (iter);
 234                         modest_window_mgr_unregister_window (MODEST_WINDOW_MGR (obj), window);
 235                 }
 236                 g_list_free (priv->window_list);
 237                 priv->window_list = NULL;
 238         }
 239
 240         /* Free the hash table with the handlers */
 241         if (priv->destroy_handlers) {
 242                 g_hash_table_destroy (priv->destroy_handlers);
 243                 priv->destroy_handlers = NULL;
 244         }
 245
 246         if (priv->viewer_handlers) {
 247                 g_hash_table_destroy (priv->viewer_handlers);
 248                 priv->viewer_handlers = NULL;
 249         }
 250
 251         modest_signal_mgr_disconnect_all_and_destroy (priv->modal_handler_uids);
 252         priv->modal_handler_uids = NULL;
 253
 254         if (priv->modal_windows) {
 255                 g_mutex_lock (priv->queue_lock);
 256                 g_queue_free (priv->modal_windows);
 257                 priv->modal_windows = NULL;
 258                 g_mutex_unlock (priv->queue_lock);
 259         }
 260         g_mutex_free (priv->queue_lock);
 261
 262         /* Do not unref priv->main_window because it does not hold a
 263            new reference */
 264
 265         G_OBJECT_CLASS(parent_class)->finalize (obj);
 266 }
 267
 268 ModestWindowMgr*
 269 modest_hildon2_window_mgr_new (void)
 270 {
 271         return MODEST_WINDOW_MGR(g_object_new(MODEST_TYPE_HILDON2_WINDOW_MGR, NULL));
 272 }
 273
 274 static gboolean
 275 modest_hildon2_window_mgr_close_all_windows (ModestWindowMgr *self)
 276 {
 277         ModestHildon2WindowMgrPrivate *priv = NULL;
 278         gboolean ret_value = FALSE;
 279         GtkWidget *window;
 280         HildonWindowStack *stack;
 281         gboolean failed = FALSE;
 282
 283         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), FALSE);
 284         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 285
 286         stack = hildon_window_stack_get_default ();
 287
 288         while ((window = hildon_window_stack_peek (stack)) != NULL) {
 289                 g_signal_emit_by_name (G_OBJECT (window), "delete-event", NULL, &ret_value);
 290                 if (ret_value == TRUE) {
 291                         failed = TRUE;
 292                         break;
 293                 }
 294         }
 295
 296         return !failed;
 297 }
 298
 299 static gint
 300 compare_msguids (ModestWindow *win,
 301                  const gchar *uid)
 302 {
 303         const gchar *msg_uid;
 304
 305         if ((!MODEST_IS_MSG_EDIT_WINDOW (win)) && (!MODEST_IS_MSG_VIEW_WINDOW (win)))
 306                 return 1;
 307
 308         /* Get message uid from msg window */
 309         if (MODEST_IS_MSG_EDIT_WINDOW (win)) {
 310                 msg_uid = modest_msg_edit_window_get_message_uid (MODEST_MSG_EDIT_WINDOW (win));
 311                 if (msg_uid && uid &&!strcmp (msg_uid, uid))
 312                         return 0;
 313         } else {
 314                 msg_uid = modest_msg_view_window_get_message_uid (MODEST_MSG_VIEW_WINDOW (win));
 315         }
 316
 317         if (msg_uid && uid &&!strcmp (msg_uid, uid))
 318                 return 0;
 319         else
 320                 return 1;
 321 }
 322
 323 static gint
 324 compare_headers (ModestWindow *win,
 325                  TnyHeader *header)
 326 {
 327         TnyHeader *my_header;
 328         gint result = 1;
 329
 330         if (!MODEST_IS_MSG_VIEW_WINDOW (win))
 331                 return 1;
 332
 333         /* Get message uid from msg window */
 334         my_header = modest_msg_view_window_get_header (MODEST_MSG_VIEW_WINDOW (win));
 335         if (my_header) {
 336                 if (my_header == header)
 337                         result = 0;
 338                 g_object_unref (my_header);
 339         }
 340         return result;
 341 }
 342
 343
 344 static gboolean
 345 modest_hildon2_window_mgr_find_registered_header (ModestWindowMgr *self, TnyHeader *header,
 346                                                   ModestWindow **win)
 347 {
 348         ModestHildon2WindowMgrPrivate *priv = NULL;
 349         gchar* uid = NULL;
 350         gboolean has_header, has_window = FALSE;
 351         GList *item = NULL;
 352
 353         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), FALSE);
 354         g_return_val_if_fail (TNY_IS_HEADER(header), FALSE);
 355
 356         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 357
 358         has_header = MODEST_WINDOW_MGR_CLASS (parent_class)->find_registered_header (self, header, win);
 359
 360         uid = modest_tny_folder_get_header_unique_id (header);
 361
 362         item = g_list_find_custom (priv->window_list, uid, (GCompareFunc) compare_msguids);
 363         if (item) {
 364                 has_window = TRUE;
 365                 if (win) {
 366                         if ((!MODEST_IS_MSG_VIEW_WINDOW(item->data)) &&
 367                             (!MODEST_IS_MSG_EDIT_WINDOW (item->data)))
 368                                 g_debug ("not a valid window!");
 369                         else {
 370                                 g_debug ("found a window");
 371                                 *win = MODEST_WINDOW (item->data);
 372                         }
 373                 }
 374         }
 375         g_free (uid);
 376
 377         return has_header || has_window;
 378 }
 379
 380 static gboolean
 381 modest_hildon2_window_mgr_find_registered_message_uid (ModestWindowMgr *self, const gchar *msg_uid,
 382                                                        ModestWindow **win)
 383 {
 384         ModestHildon2WindowMgrPrivate *priv = NULL;
 385         gboolean has_header, has_window = FALSE;
 386         GList *item = NULL;
 387
 388         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), FALSE);
 389         g_return_val_if_fail (msg_uid && msg_uid[0] != '\0', FALSE);
 390
 391         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 392
 393         has_header = MODEST_WINDOW_MGR_CLASS (parent_class)->find_registered_message_uid (self, msg_uid, win);
 394
 395         item = g_list_find_custom (priv->window_list, msg_uid, (GCompareFunc) compare_msguids);
 396         if (item) {
 397                 has_window = TRUE;
 398                 if (win) {
 399                         if ((!MODEST_IS_MSG_VIEW_WINDOW(item->data)) &&
 400                             (!MODEST_IS_MSG_EDIT_WINDOW (item->data)))
 401                                 g_debug ("not a valid window!");
 402                         else {
 403                                 g_debug ("found a window");
 404                                 *win = MODEST_WINDOW (item->data);
 405                         }
 406                 }
 407         }
 408
 409         return has_header || has_window;
 410 }
 411
 412 static GList *
 413 modest_hildon2_window_mgr_get_window_list (ModestWindowMgr *self)
 414 {
 415         ModestHildon2WindowMgrPrivate *priv;
 416
 417         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), NULL);
 418         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 419
 420         return g_list_copy (priv->window_list);
 421 }
 422
 423 static gboolean
 424 modest_hildon2_window_mgr_register_window (ModestWindowMgr *self,
 425                                            ModestWindow *window,
 426                                            ModestWindow *parent)
 427 {
 428         GList *win;
 429         ModestHildon2WindowMgrPrivate *priv;
 430         gint *handler_id;
 431         HildonWindowStack *stack;
 432         gboolean nested_msg = FALSE;
 433         ModestWindow *current_top;
 434         GtkWidget *modal;
 435
 436         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), FALSE);
 437         g_return_val_if_fail (GTK_IS_WINDOW (window), FALSE);
 438
 439         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 440
 441         /* Check that there is no active modal dialog */
 442         modal = (GtkWidget *) modest_window_mgr_get_modal (self);
 443         while (modal && GTK_IS_DIALOG (modal)) {
 444                 GtkWidget *parent;
 445
 446                 /* Get the parent */
 447                 parent = (GtkWidget *) gtk_window_get_transient_for (GTK_WINDOW (modal));
 448
 449                 /* Try to close it */
 450                 gtk_dialog_response (GTK_DIALOG (modal), GTK_RESPONSE_DELETE_EVENT);
 451
 452                 /* Maybe the dialog was not closed, because a close
 453                    confirmation dialog for example. Then ignore the
 454                    register process */
 455                 if (GTK_IS_WINDOW (modal)) {
 456                         gtk_window_present (GTK_WINDOW (modal));
 457                         return FALSE;
 458                 }
 459
 460                 /* Get next modal */
 461                 modal = parent;
 462         }
 463
 464         stack = hildon_window_stack_get_default ();
 465         current_top = (ModestWindow *) hildon_window_stack_peek (stack);
 466
 467         win = g_list_find (priv->window_list, window);
 468         if (win) {
 469                 /* this is for the case we want to register the window
 470                    and it was already registered */
 471                 gtk_window_present (GTK_WINDOW (window));
 472                 return FALSE;
 473         }
 474
 475         /* Do not allow standalone editors or standalone viewers */
 476         if (!current_top &&
 477             (MODEST_IS_MSG_VIEW_WINDOW (window) ||
 478              MODEST_IS_MSG_EDIT_WINDOW (window)))
 479                 modest_window_mgr_show_initial_window (self);
 480
 481         if (MODEST_IS_MSG_VIEW_WINDOW (window)) {
 482                 gchar *uid;
 483                 TnyHeader *header;
 484                 header = modest_msg_view_window_get_header (MODEST_MSG_VIEW_WINDOW (window));
 485
 486                 if (header) {
 487                         uid = modest_tny_folder_get_header_unique_id (header);
 488
 489                         /* Embedded messages do not have uid */
 490                         if (uid) {
 491                                 if (g_list_find_custom (priv->window_list, uid, (GCompareFunc) compare_msguids)) {
 492                                         g_debug ("%s found another view window showing the same header", __FUNCTION__);
 493                                         g_free (uid);
 494                                         g_object_unref (header);
 495                                         return FALSE;
 496                                 }
 497                                 g_free (uid);
 498                         } else {
 499                                 if (g_list_find_custom (priv->window_list, header, (GCompareFunc) compare_headers)) {
 500                                         g_debug ("%s found another view window showing the same header", __FUNCTION__);
 501                                         g_object_unref (header);
 502                                         return FALSE;
 503                                 }
 504                         }
 505                         g_object_unref (header);
 506                 }
 507         }
 508
 509         if (MODEST_IS_FOLDER_WINDOW (current_top) && MODEST_IS_FOLDER_WINDOW (window)) {
 510                 gtk_window_present (GTK_WINDOW (window));
 511                 return FALSE;
 512         }
 513
 514         if (MODEST_IS_MAILBOXES_WINDOW (current_top) && MODEST_IS_MAILBOXES_WINDOW (window)) {
 515                 gtk_window_present (GTK_WINDOW (window));
 516                 return FALSE;
 517         }
 518
 519         /* Mailboxes window can not replace folder windows */
 520         if (MODEST_IS_FOLDER_WINDOW (current_top) && MODEST_IS_MAILBOXES_WINDOW (window)) {
 521                 gtk_window_present (GTK_WINDOW (current_top));
 522                 return FALSE;
 523         }
 524
 525         /* Trying to open a folders window and a mailboxes window at
 526            the same time from the accounts window is not allowed */
 527         if (MODEST_IS_MAILBOXES_WINDOW (current_top) &&
 528             MODEST_IS_FOLDER_WINDOW (window) &&
 529             MODEST_IS_ACCOUNTS_WINDOW (parent)) {
 530                 gtk_window_present (GTK_WINDOW (window));
 531                 return FALSE;
 532         }
 533
 534         if (MODEST_IS_HEADER_WINDOW (current_top) && MODEST_IS_HEADER_WINDOW (window)) {
 535                 g_debug ("Trying to register a second header window is not allowed");
 536                 gtk_window_present (GTK_WINDOW (current_top));
 537                 return FALSE;
 538         }
 539
 540         if (!MODEST_WINDOW_MGR_CLASS (parent_class)->register_window (self, window, parent))
 541                 goto fail;
 542
 543         /* Add to list. Keep a reference to the window */
 544         g_object_ref (window);
 545         priv->window_list = g_list_prepend (priv->window_list, window);
 546
 547         nested_msg = MODEST_IS_MSG_VIEW_WINDOW (window) &&
 548                 MODEST_IS_MSG_VIEW_WINDOW (parent);
 549
 550         /* Close views if they're being shown. Nevertheless we must
 551            allow nested messages */
 552         if (!nested_msg &&
 553             (MODEST_IS_MSG_EDIT_WINDOW (current_top) ||
 554              MODEST_IS_MSG_VIEW_WINDOW (current_top))) {
 555                 gboolean retval;
 556
 557                 /* If the current view has modal dialogs then
 558                    we fail to register the new view */
 559                 if ((current_top != NULL) &&
 560                     window_has_modals (MODEST_WINDOW (current_top))) {
 561                         /* Window on top but it has opened dialogs */
 562                         goto fail;
 563                 }
 564
 565                 /* Close the current view */
 566                 g_signal_emit_by_name (G_OBJECT (current_top), "delete-event", NULL, &retval);
 567                 if (retval == TRUE) {
 568                         /* Cancelled closing top window, then we fail to register */
 569                         goto fail;
 570                 }
 571         }
 572
 573         /* Listen to object destruction */
 574         handler_id = g_malloc0 (sizeof (gint));
 575         *handler_id = g_signal_connect (window, "delete-event", G_CALLBACK (on_window_destroy), self);
 576         g_hash_table_insert (priv->destroy_handlers, window, handler_id);
 577
 578         /* Show toolbar always */
 579         modest_window_show_toolbar (window, TRUE);
 580
 581         return TRUE;
 582 fail:
 583         /* Add to list. Keep a reference to the window */
 584         priv->window_list = g_list_remove (priv->window_list, window);
 585         g_object_unref (window);
 586         current_top = (ModestWindow *) hildon_window_stack_peek (stack);
 587         if (current_top)
 588                 gtk_window_present (GTK_WINDOW (current_top));
 589         return FALSE;
 590 }
 591
 592 static void
 593 cancel_window_operations (ModestWindow *window)
 594 {
 595         GSList* pending_ops = NULL;
 596
 597         /* cancel open and receive operations */
 598         pending_ops = modest_mail_operation_queue_get_by_source (modest_runtime_get_mail_operation_queue (),
 599                                                                  G_OBJECT (window));
 600         while (pending_ops != NULL) {
 601                 ModestMailOperationTypeOperation type;
 602                 GSList* tmp_list = NULL;
 603
 604                 type = modest_mail_operation_get_type_operation (MODEST_MAIL_OPERATION (pending_ops->data));
 605                 if (type == MODEST_MAIL_OPERATION_TYPE_RECEIVE || type == MODEST_MAIL_OPERATION_TYPE_OPEN) {
 606                         modest_mail_operation_cancel (pending_ops->data);
 607                 }
 608                 g_object_unref (G_OBJECT (pending_ops->data));
 609                 tmp_list = pending_ops;
 610                 pending_ops = g_slist_next (pending_ops);
 611                 g_slist_free_1 (tmp_list);
 612         }
 613 }
 614
 615 static gboolean
 616 window_has_modals (ModestWindow *window)
 617 {
 618         GList *toplevels;
 619         GList *node;
 620         gboolean retvalue = FALSE;
 621
 622         /* First we fetch all toplevels */
 623         toplevels = gtk_window_list_toplevels ();
 624         for (node = toplevels; node != NULL; node = g_list_next (node)) {
 625                 if (GTK_IS_WINDOW (node->data) &&
 626                     gtk_window_get_transient_for (GTK_WINDOW (node->data)) == GTK_WINDOW (window) &&
 627                     GTK_WIDGET_VISIBLE (node->data)) {
 628                         retvalue = TRUE;
 629                         break;
 630                 }
 631         }
 632         g_list_free (toplevels);
 633         return retvalue;
 634 }
 635
 636 static gboolean
 637 window_can_close (ModestWindow *window)
 638 {
 639         /* An editor can be always closed no matter the dialogs it has
 640          * on top. */
 641         if (MODEST_IS_MSG_EDIT_WINDOW (window))
 642                 return TRUE;
 643
 644         return !window_has_modals (window);
 645 }
 646
 647 static gboolean
 648 on_window_destroy (ModestWindow *window,
 649                    GdkEvent *event,
 650                    ModestHildon2WindowMgr *self)
 651 {
 652         gboolean no_propagate = FALSE;
 653
 654         if (!window_can_close (window))
 655                 return TRUE;
 656
 657         if (MODEST_IS_MSG_EDIT_WINDOW (window)) {
 658                 gboolean sent = FALSE;
 659                 sent = modest_msg_edit_window_get_sent (MODEST_MSG_EDIT_WINDOW (window));
 660                 /* Save currently edited message to Drafts if it was not sent */
 661                 if (!sent && modest_msg_edit_window_is_modified (MODEST_MSG_EDIT_WINDOW (window))) {
 662                         ModestMsgEditWindow *edit_window;
 663                         MsgData *data;
 664
 665                         edit_window = MODEST_MSG_EDIT_WINDOW (window);
 666                         data = modest_msg_edit_window_get_msg_data (edit_window);
 667
 668                         if (data) {
 669                                 gint parts_count;
 670                                 guint64 parts_size, available_size, expected_size;
 671
 672                                 available_size = modest_utils_get_available_space (NULL);
 673                                 modest_msg_edit_window_get_parts_size (edit_window, &parts_count, &parts_size);
 674                                 expected_size = modest_tny_msg_estimate_size (data->plain_body,
 675                                                                               data->html_body,
 676                                                                               parts_count,
 677                                                                               parts_size);
 678                                 modest_msg_edit_window_free_msg_data (edit_window, data);
 679                                 data = NULL;
 680
 681                                 /* If there is not enough space
 682                                    available for saving the message
 683                                    then show an error and close the
 684                                    window without saving */
 685                                 if (expected_size >= available_size) {
 686                                         modest_platform_run_information_dialog (GTK_WINDOW (edit_window),
 687                                                                                 _("mail_in_ui_save_error"),
 688                                                                                 FALSE);
 689                                 } else {
 690                                         if (!modest_ui_actions_on_save_to_drafts (NULL, MODEST_MSG_EDIT_WINDOW (window)))
 691                                                 return TRUE;
 692                                 }
 693                         } else {
 694                                 g_warning ("Edit window without message data. This is probably a bug");
 695                         }
 696                 }
 697         }
 698
 699         /* Unregister window */
 700         modest_window_mgr_unregister_window (MODEST_WINDOW_MGR (self), window);
 701         no_propagate = FALSE;
 702
 703         return no_propagate;
 704 }
 705
 706 static void
 707 modest_hildon2_window_mgr_unregister_window (ModestWindowMgr *self,
 708                                              ModestWindow *window)
 709 {
 710         GList *win;
 711         ModestHildon2WindowMgrPrivate *priv;
 712         gulong *tmp, handler_id;
 713         guint num_windows;
 714
 715         g_return_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self));
 716         g_return_if_fail (MODEST_IS_WINDOW (window));
 717
 718         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 719
 720         win = g_list_find (priv->window_list, window);
 721         if (!win) {
 722                 g_warning ("Trying to unregister a window that has not being registered yet");
 723                 return;
 724         }
 725
 726         /* Remove the viewer window handler from the hash table. The
 727            HashTable could not exist if the main window was closed
 728            when there were other windows remaining */
 729         if (MODEST_IS_MSG_VIEW_WINDOW (window) && priv->viewer_handlers) {
 730                 tmp = (gulong *) g_hash_table_lookup (priv->viewer_handlers, window);
 731                 /* If the viewer was created without a main window
 732                    (for example when opening a message through D-Bus
 733                    the viewer handlers was not registered */
 734                 if (tmp) {
 735                         g_signal_handler_disconnect (window, *tmp);
 736                         g_hash_table_remove (priv->viewer_handlers, window);
 737                 }
 738         }
 739
 740         /* Remove from list & hash table */
 741         priv->window_list = g_list_remove_link (priv->window_list, win);
 742         tmp = g_hash_table_lookup (priv->destroy_handlers, window);
 743         handler_id = *tmp;
 744
 745         g_hash_table_remove (priv->destroy_handlers, window);
 746
 747         /* cancel open and receive operations */
 748         cancel_window_operations (window);
 749
 750         /* Disconnect the "window-state-event" handler, we won't need it anymore */
 751         if (priv->window_state_uids) {
 752                 priv->window_state_uids =
 753                         modest_signal_mgr_disconnect (priv->window_state_uids,
 754                                                       G_OBJECT (window),
 755                                                       "notify::is-topmost");
 756         }
 757
 758         /* Disconnect the "delete-event" handler, we won't need it anymore */
 759         g_signal_handler_disconnect (window, handler_id);
 760
 761         /* Destroy the window */
 762         g_object_unref (win->data);
 763         g_list_free (win);
 764
 765         MODEST_WINDOW_MGR_CLASS (parent_class)->unregister_window (self, window);
 766
 767         /* We have to get the number of windows here in order not to
 768            emit the signal too many times */
 769         num_windows = modest_window_mgr_get_num_windows (self);
 770
 771         /* If there are no more windows registered emit the signal */
 772         if (num_windows == 0)
 773                 g_signal_emit_by_name (self, "window-list-empty");
 774 }
 775
 776
 777 static void
 778 modest_hildon2_window_mgr_set_fullscreen_mode (ModestWindowMgr *self,
 779                                                gboolean on)
 780 {
 781         g_return_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self));
 782
 783         return;
 784 }
 785
 786 static gboolean
 787 modest_hildon2_window_mgr_get_fullscreen_mode (ModestWindowMgr *self)
 788 {
 789         return FALSE;
 790 }
 791
 792 static void
 793 modest_hildon2_window_mgr_show_toolbars (ModestWindowMgr *self,
 794                                          GType window_type,
 795                                          gboolean show_toolbars,
 796                                          gboolean fullscreen)
 797 {
 798         g_return_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self));
 799
 800         return;
 801 }
 802
 803 static ModestWindow*
 804 modest_hildon2_window_mgr_get_main_window (ModestWindowMgr *self, gboolean show)
 805 {
 806         ModestHildon2WindowMgrPrivate *priv;
 807         ModestWindow *result;
 808
 809         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), NULL);
 810         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 811
 812         /* TODO: make this return NULL always */
 813
 814         result = MODEST_WINDOW_MGR_CLASS (parent_class)->get_main_window (self, FALSE);
 815         /* create the main window, if it hasn't been created yet */
 816         if (!result && show) {
 817                 /* modest_window_mgr_register_window will set priv->main_window */
 818                 result = modest_main_window_new ();
 819                 /* We have to remove all other windows */
 820                 if (!modest_window_mgr_close_all_windows (self)) {
 821                         gtk_widget_destroy (GTK_WIDGET (result));
 822                         return NULL;
 823                 }
 824                 if (!modest_window_mgr_register_window (self, result, NULL)) {
 825                         gtk_widget_destroy (GTK_WIDGET (result));
 826                         return NULL;
 827                 }
 828                 MODEST_DEBUG_BLOCK(
 829                         g_debug ("%s: created main window: %p\n", __FUNCTION__, result);
 830                 );
 831         }
 832         if (show) {
 833                 gtk_widget_show_all (GTK_WIDGET (result));
 834                 gtk_window_present (GTK_WINDOW (result));
 835         }
 836
 837         return result;
 838 }
 839
 840
 841 static GtkWindow *
 842 modest_hildon2_window_mgr_get_modal (ModestWindowMgr *self)
 843 {
 844         ModestHildon2WindowMgrPrivate *priv;
 845         GList *toplevel_list;
 846         GtkWindow *toplevel;
 847
 848         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), NULL);
 849         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 850
 851         toplevel = NULL;
 852         toplevel_list = gtk_window_list_toplevels ();
 853         while (toplevel_list) {
 854                 if (gtk_window_is_active (toplevel_list->data) &&
 855                     gtk_window_get_modal (toplevel_list->data)) {
 856                         toplevel = (GtkWindow *) toplevel_list->data;
 857                         break;
 858                 }
 859                 toplevel_list = g_list_next (toplevel_list);
 860         }
 861
 862         return toplevel;
 863 }
 864
 865
 866 static void
 867 modest_hildon2_window_mgr_set_modal (ModestWindowMgr *self,
 868                                      GtkWindow *window,
 869                                      GtkWindow *parent)
 870 {
 871         g_return_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self));
 872         g_return_if_fail (GTK_IS_WINDOW (window));
 873
 874         gtk_window_set_modal (window, TRUE);
 875         gtk_window_set_transient_for (window, parent);
 876         gtk_window_set_destroy_with_parent (window, TRUE);
 877 }
 878
 879 static void
 880 on_account_removed (TnyAccountStore *acc_store,
 881                     TnyAccount *account,
 882                     gpointer user_data)
 883 {
 884         HildonWindowStack *stack;
 885         ModestWindow *current_top;
 886         gboolean has_accounts;
 887
 888         /* Ignore transport account removals */
 889         if (TNY_IS_TRANSPORT_ACCOUNT (account))
 890                 return;
 891
 892         stack = hildon_window_stack_get_default ();
 893         current_top = (ModestWindow *) hildon_window_stack_peek (stack);
 894         has_accounts = modest_account_mgr_has_accounts (modest_runtime_get_account_mgr (), TRUE);
 895
 896         /* if we're showing the header view of the currently deleted
 897            account, or the outbox and we deleted the last account,
 898            then close the window */
 899         if (current_top && MODEST_IS_HEADER_WINDOW (current_top)) {
 900                 ModestHeaderView *header_view;
 901                 TnyFolder *folder;
 902                 gboolean deleted = FALSE;
 903
 904                 header_view = modest_header_window_get_header_view (MODEST_HEADER_WINDOW (current_top));
 905                 folder = modest_header_view_get_folder (header_view);
 906                 if (folder) {
 907                         gboolean retval;
 908
 909                         /* Close if it's my account */
 910                         if (!TNY_IS_MERGE_FOLDER (folder)) {
 911                                 TnyAccount *my_account;
 912
 913                                 my_account = tny_folder_get_account (folder);
 914                                 if (my_account) {
 915                                         if (my_account == account) {
 916                                                 g_signal_emit_by_name (G_OBJECT (current_top),
 917                                                                        "delete-event",
 918                                                                        NULL, &retval);
 919                                                 deleted = TRUE;
 920                                         }
 921                                         g_object_unref (my_account);
 922                                 }
 923                         }
 924
 925                         /* Close if viewing outbox and no account left */
 926                         if (tny_folder_get_folder_type (folder) == TNY_FOLDER_TYPE_OUTBOX) {
 927                                 if (!has_accounts) {
 928                                         g_signal_emit_by_name (G_OBJECT (current_top),
 929                                                                "delete-event",
 930                                                                NULL, &retval);
 931                                         deleted = TRUE;
 932                                 }
 933                         }
 934                         g_object_unref (folder);
 935
 936                         if (deleted) {
 937                                 current_top = (ModestWindow *) hildon_window_stack_peek (stack);
 938                         }
 939                 }
 940         }
 941 }
 942
 943 static ModestWindow *
 944 modest_hildon2_window_mgr_show_initial_window (ModestWindowMgr *self)
 945 {
 946         ModestWindow *initial_window = NULL;
 947         ModestHildon2WindowMgrPrivate *priv;
 948
 949         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 950
 951         /* Connect to the account store "account-removed" signal". We
 952            do this here because in the init the singletons are still
 953            not initialized properly */
 954         if (!g_signal_handler_is_connected (modest_runtime_get_account_store (),
 955                                             priv->accounts_handler)) {
 956                 priv->accounts_handler = g_signal_connect (modest_runtime_get_account_store (),
 957                                                            "account-removed",
 958                                                            G_CALLBACK (on_account_removed),
 959                                                            self);
 960         }
 961
 962         /* Return accounts window */
 963         initial_window = MODEST_WINDOW (modest_accounts_window_new ());
 964         modest_window_mgr_register_window (self, initial_window, NULL);
 965
 966         return initial_window;
 967 }
 968
 969
 970 static ModestWindow *
 971 modest_hildon2_window_mgr_get_current_top (ModestWindowMgr *self)
 972 {
 973         HildonWindowStack *stack;
 974         stack = hildon_window_stack_get_default ();
 975         return (ModestWindow *) hildon_window_stack_peek (stack);
 976 }
 977
 978 static gint
 979 find_folder_window (gconstpointer a,
 980                     gconstpointer b)
 981 {
 982         return (MODEST_IS_FOLDER_WINDOW (a)) ? 0 : 1;
 983 }
 984
 985 ModestWindow *
 986 modest_hildon2_window_mgr_get_folder_window (ModestHildon2WindowMgr *self)
 987 {
 988         ModestHildon2WindowMgrPrivate *priv;
 989         GList *window;
 990
 991         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), NULL);
 992
 993         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
 994
 995         window = g_list_find_custom (priv->window_list,
 996                                      NULL,
 997                                      find_folder_window);
 998
 999         return (window != NULL) ? MODEST_WINDOW (window->data) : NULL;
1000 }
1001
1002 static gboolean
1003 modest_hildon2_window_mgr_screen_is_on (ModestWindowMgr *self)
1004 {
1005         ModestHildon2WindowMgrPrivate *priv = NULL;
1006
1007         g_return_val_if_fail (MODEST_IS_HILDON2_WINDOW_MGR (self), FALSE);
1008
1009         priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (self);
1010
1011         return (priv->display_state == OSSO_DISPLAY_ON) ? TRUE : FALSE;
1012 }
1013
1014 static void
1015 osso_display_event_cb (osso_display_state_t state,
1016                        gpointer data)
1017 {
1018         ModestHildon2WindowMgrPrivate *priv = MODEST_HILDON2_WINDOW_MGR_GET_PRIVATE (data);
1019
1020         priv->display_state = state;
1021
1022         /* Stop blinking if the screen becomes on */
1023         if (priv->display_state == OSSO_DISPLAY_ON)
1024                 modest_platform_remove_new_mail_notifications (TRUE);
1025 }
1026