aboutsummaryrefslogtreecommitdiffstats
path: root/calendar/gui/e-tasks.c
blob: 2fa52dd652c907838f6e9268f0d0542f29e7e03c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-tasks.c
 *
 * Copyright (C) 2001  Ximian, Inc.
 * Copyright (C) 2001  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors: Federico Mena Quintero <federico@ximian.com>
 *      Damon Chaplin <damon@ximian.com>
 */

#include <config.h>
#include <gnome.h>
#include <gal/util/e-util.h>
#include <gal/e-table/e-table-scrolled.h>
#include <gal/menus/gal-view-instance.h>
#include <gal/menus/gal-view-factory-etable.h>
#include <gal/menus/gal-view-etable.h>
#include "widgets/menus/gal-view-menus.h"
#include "dialogs/task-editor.h"
#include "cal-search-bar.h"
#include "calendar-config.h"
#include "component-factory.h"

#include "e-tasks.h"

/* A list of all of the ETasks widgets in use. We use this to update the
   user preference settings. This will change when we switch to GConf. */
static GList *all_tasks = NULL;


/* Private part of the GnomeCalendar structure */
struct _ETasksPrivate {
    /* The calendar client object we monitor */
    CalClient   *client;
    CalQuery    *query;
    
    /* The ECalendarTable showing the tasks. */
    GtkWidget   *tasks_view;

    /* Calendar search bar for tasks */
    GtkWidget *search_bar;

    /* View instance and the view menus handler */
    GalViewInstance *view_instance;
    GalViewMenus *view_menus;
};


static void e_tasks_class_init (ETasksClass *class);
static void e_tasks_init (ETasks *tasks);
static void setup_widgets (ETasks *tasks);
static void e_tasks_destroy (GtkObject *object);

static void cal_opened_cb (CalClient *client, CalClientOpenStatus status, gpointer data);

static char* e_tasks_get_config_filename (ETasks *tasks);

/* Signal IDs */
enum {
    SELECTION_CHANGED,
    LAST_SIGNAL
};

static GtkTableClass *parent_class;
static guint e_tasks_signals[LAST_SIGNAL] = { 0 };


E_MAKE_TYPE (e_tasks, "ETasks", ETasks,
         e_tasks_class_init, e_tasks_init,
         GTK_TYPE_TABLE)


/* Class initialization function for the gnome calendar */
static void
e_tasks_class_init (ETasksClass *class)
{
    GtkObjectClass *object_class;

    object_class = (GtkObjectClass *) class;

    parent_class = gtk_type_class (GTK_TYPE_TABLE);

    e_tasks_signals[SELECTION_CHANGED] =
        gtk_signal_new ("selection_changed",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ETasksClass, selection_changed),
                gtk_marshal_NONE__INT,
                GTK_TYPE_NONE, 1,
                GTK_TYPE_INT);

    gtk_object_class_add_signals (object_class, e_tasks_signals, LAST_SIGNAL);

    object_class->destroy = e_tasks_destroy;

    class->selection_changed = NULL;
}


/* Object initialization function for the gnome calendar */
static void
e_tasks_init (ETasks *tasks)
{
    ETasksPrivate *priv;

    priv = g_new0 (ETasksPrivate, 1);
    tasks->priv = priv;

    priv->client = NULL;
    priv->query = NULL;
    priv->view_instance = NULL;
    priv->view_menus = NULL;

    setup_widgets (tasks);
}

/* Callback used when the selection changes in the table. */
static void
table_selection_change_cb (ETable *etable, gpointer data)
{
    ETasks *tasks;
    int n_selected;

    tasks = E_TASKS (data);

    n_selected = e_table_selected_count (etable);
    gtk_signal_emit (GTK_OBJECT (tasks), e_tasks_signals[SELECTION_CHANGED],
             n_selected);
}

/* Callback used when the sexp in the search bar changes */
static void
search_bar_sexp_changed_cb (CalSearchBar *cal_search, const char *sexp, gpointer data)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    CalendarModel *model;

    tasks = E_TASKS (data);
    priv = tasks->priv;

    model = e_calendar_table_get_model (E_CALENDAR_TABLE (priv->tasks_view));
    calendar_model_set_query (model, sexp);
}

/* Callback used when the selected category in the search bar changes */
static void
search_bar_category_changed_cb (CalSearchBar *cal_search, const char *category, gpointer data)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    CalendarModel *model;

    tasks = E_TASKS (data);
    priv = tasks->priv;

    model = e_calendar_table_get_model (E_CALENDAR_TABLE (priv->tasks_view));
    calendar_model_set_default_category (model, category);
}

#define E_TASKS_TABLE_DEFAULT_STATE                 \
    "<?xml version=\"1.0\"?>"                   \
    "<ETableState>"                         \
    "<column source=\"13\"/>"                   \
    "<column source=\"14\"/>"                   \
    "<column source=\"9\"/>"                    \
    "<column source=\"5\"/>"                    \
    "<grouping/>"                           \
    "</ETableState>"


static void
setup_widgets (ETasks *tasks)
{
    ETasksPrivate *priv;
    ETable *etable;
    CalendarModel *model;

    priv = tasks->priv;

    priv->search_bar = cal_search_bar_new ();
    gtk_signal_connect (GTK_OBJECT (priv->search_bar), "sexp_changed",
                GTK_SIGNAL_FUNC (search_bar_sexp_changed_cb), tasks);
    gtk_signal_connect (GTK_OBJECT (priv->search_bar), "category_changed",
                GTK_SIGNAL_FUNC (search_bar_category_changed_cb), tasks);

    gtk_table_attach (GTK_TABLE (tasks), priv->search_bar, 0, 1, 0, 1,
              GTK_EXPAND | GTK_FILL | GTK_SHRINK, 0, 0, 0);
    gtk_widget_show (priv->search_bar);

    priv->tasks_view = e_calendar_table_new ();
    model = e_calendar_table_get_model (E_CALENDAR_TABLE (priv->tasks_view));
    calendar_model_set_new_comp_vtype (model, CAL_COMPONENT_TODO);

    etable = e_table_scrolled_get_table (
        E_TABLE_SCROLLED (E_CALENDAR_TABLE (priv->tasks_view)->etable));
    e_table_set_state (etable, E_TASKS_TABLE_DEFAULT_STATE);
    gtk_table_attach (GTK_TABLE (tasks), priv->tasks_view, 0, 1, 1, 2,
              GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
    gtk_widget_show (priv->tasks_view);

    calendar_config_configure_e_calendar_table (E_CALENDAR_TABLE (priv->tasks_view));

    gtk_signal_connect (GTK_OBJECT (etable), "selection_change",
                GTK_SIGNAL_FUNC (table_selection_change_cb), tasks);
}

/* Callback used when the set of categories changes in the calendar client */
static void
client_categories_changed_cb (CalClient *client, GPtrArray *categories, gpointer data)
{
    ETasks *tasks;
    ETasksPrivate *priv;

    tasks = E_TASKS (data);
    priv = tasks->priv;

    cal_search_bar_set_categories (CAL_SEARCH_BAR (priv->search_bar), categories);
}

GtkWidget *
e_tasks_construct (ETasks *tasks)
{
    ETasksPrivate *priv;
    CalendarModel *model;

    g_return_val_if_fail (tasks != NULL, NULL);
    g_return_val_if_fail (E_IS_TASKS (tasks), NULL);

    priv = tasks->priv;

    priv->client = cal_client_new ();
    if (!priv->client)
        return NULL;

    gtk_signal_connect (GTK_OBJECT (priv->client), "cal_opened",
                GTK_SIGNAL_FUNC (cal_opened_cb), tasks);
    gtk_signal_connect (GTK_OBJECT (priv->client), "categories_changed",
                GTK_SIGNAL_FUNC (client_categories_changed_cb), tasks);

    model = e_calendar_table_get_model (E_CALENDAR_TABLE (priv->tasks_view));
    g_assert (model != NULL);

    calendar_model_set_cal_client (model, priv->client, CALOBJ_TYPE_TODO);

    return GTK_WIDGET (tasks);
}


GtkWidget *
e_tasks_new (void)
{
    ETasks *tasks;

    tasks = gtk_type_new (e_tasks_get_type ());

    if (!e_tasks_construct (tasks)) {
        g_message ("e_tasks_new(): Could not construct the tasks GUI");
        gtk_object_unref (GTK_OBJECT (tasks));
        return NULL;
    }

    all_tasks = g_list_prepend (all_tasks, tasks);

    return GTK_WIDGET (tasks);
}


static void
e_tasks_destroy (GtkObject *object)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    char *config_filename;

    g_return_if_fail (object != NULL);
    g_return_if_fail (E_IS_TASKS (object));

    tasks = E_TASKS (object);
    priv = tasks->priv;

    /* Save the ETable layout. */
    config_filename = e_tasks_get_config_filename (tasks);
    e_calendar_table_save_state (E_CALENDAR_TABLE (priv->tasks_view),
                     config_filename);
    g_free (config_filename);

    if (priv->client) {
        gtk_object_unref (GTK_OBJECT (priv->client));
        priv->client = NULL;
    }

    g_free (priv);
    tasks->priv = NULL;

    all_tasks = g_list_remove (all_tasks, tasks);

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

static void
set_status_message (ETasks *tasks, const char *message)
{
    ETasksPrivate *priv;
    CalendarModel *model;
    
    priv = tasks->priv;
    
    model = e_calendar_table_get_model (E_CALENDAR_TABLE (priv->tasks_view));
    calendar_model_set_status_message (model, message);
}

gboolean
e_tasks_open            (ETasks     *tasks,
                 char       *file)
{
    ETasksPrivate *priv;
    char *config_filename;
    char *message;

    g_return_val_if_fail (tasks != NULL, FALSE);
    g_return_val_if_fail (E_IS_TASKS (tasks), FALSE);
    g_return_val_if_fail (file != NULL, FALSE);

    priv = tasks->priv;

    message = g_strdup_printf (_("Opening tasks at %s"), file);
    set_status_message (tasks, message);
    g_free (message);

    if (!cal_client_open_calendar (priv->client, file, FALSE)) {
        g_message ("e_tasks_open(): Could not issue the request");
        return FALSE;
    }

    config_filename = e_tasks_get_config_filename (tasks);
    e_calendar_table_load_state (E_CALENDAR_TABLE (priv->tasks_view),
                     config_filename);
    g_free (config_filename);

    return TRUE;
}


/* Displays an error to indicate that loading a calendar failed */
static void
load_error              (ETasks     *tasks,
                     const char *uri)
{
    char *msg;

    msg = g_strdup_printf (_("Could not load the tasks in `%s'"), uri);
    gnome_error_dialog_parented (msg, GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (tasks))));
    g_free (msg);
}

/* Displays an error to indicate that the specified URI method is not supported */
static void
method_error                (ETasks     *tasks,
                     const char *uri)
{
    char *msg;

    msg = g_strdup_printf (_("The method required to load `%s' is not supported"), uri);
    gnome_error_dialog_parented (msg, GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (tasks))));
    g_free (msg);
}

/* Callback from the calendar client when a calendar is opened */
static void
cal_opened_cb               (CalClient  *client,
                     CalClientOpenStatus status,
                     gpointer    data)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    char *location;
    icaltimezone *zone;

    tasks = E_TASKS (data);
    priv = tasks->priv;

    set_status_message (tasks, NULL);

    switch (status) {
    case CAL_CLIENT_OPEN_SUCCESS:
        /* Everything is OK */

        /* Set the client's default timezone, if we have one. */
        location = calendar_config_get_timezone ();
        zone = icaltimezone_get_builtin_timezone (location);
        if (zone)
            cal_client_set_default_timezone (client, zone);
        return;

    case CAL_CLIENT_OPEN_ERROR:
        load_error (tasks, cal_client_get_uri (client));
        break;

    case CAL_CLIENT_OPEN_NOT_FOUND:
        /* bullshit; we did not specify only_if_exists */
        g_assert_not_reached ();
        return;

    case CAL_CLIENT_OPEN_METHOD_NOT_SUPPORTED:
        method_error (tasks, cal_client_get_uri (client));
        break;

    default:
        g_assert_not_reached ();
    }
}


static char*
e_tasks_get_config_filename     (ETasks     *tasks)
{
    ETasksPrivate *priv;
    char *url, *filename;

    priv = tasks->priv;

    url = g_strdup (cal_client_get_uri (priv->client));

    /* This turns all funny characters into '_', in the string itself. */
    e_filename_make_safe (url);
    
    filename = g_strdup_printf ("%s/config/et-header-%s", evolution_dir,
                    url);
    g_free (url);
    
    return filename;
}


/**
 * e_tasks_get_cal_client:
 * @tasks: An #ETasks.
 *
 * Queries the calendar client interface object that a tasks view is using.
 *
 * Return value: A calendar client interface object.
 **/
CalClient *
e_tasks_get_cal_client          (ETasks     *tasks)
{
    ETasksPrivate *priv;

    g_return_val_if_fail (E_IS_TASKS (tasks), NULL);

    priv = tasks->priv;

    return priv->client;
}


void
e_tasks_new_task            (ETasks     *tasks)
{
    ETasksPrivate *priv;
    TaskEditor *tedit;
    CalComponent *comp;
    const char *category;

    g_return_if_fail (E_IS_TASKS (tasks));

    priv = tasks->priv;

    tedit = task_editor_new ();
    comp_editor_set_cal_client (COMP_EDITOR (tedit), priv->client);

    comp = cal_component_new ();
    cal_component_set_new_vtype (comp, CAL_COMPONENT_TODO);

    category = cal_search_bar_get_category (CAL_SEARCH_BAR (priv->search_bar));
    cal_component_set_categories (comp, category);

    comp_editor_edit_comp (COMP_EDITOR (tedit), comp);
    gtk_object_unref (GTK_OBJECT (comp));

    comp_editor_focus (COMP_EDITOR (tedit));
}

/**
 * e_tasks_complete_selected:
 * @tasks: A tasks control widget
 * 
 * Marks the selected tasks complete
 **/
void
e_tasks_complete_selected (ETasks *tasks)
{
    ETasksPrivate *priv;
    ECalendarTable *cal_table;

    g_return_if_fail (tasks != NULL);
    g_return_if_fail (E_IS_TASKS (tasks));

    priv = tasks->priv;

    cal_table = E_CALENDAR_TABLE (priv->tasks_view);
    e_calendar_table_complete_selected (cal_table);
}

/**
 * e_tasks_delete_selected:
 * @tasks: A tasks control widget.
 * 
 * Deletes the selected tasks in the task list.
 **/
void
e_tasks_delete_selected (ETasks *tasks)
{
    ETasksPrivate *priv;
    ECalendarTable *cal_table;

    g_return_if_fail (tasks != NULL);
    g_return_if_fail (E_IS_TASKS (tasks));

    priv = tasks->priv;

    cal_table = E_CALENDAR_TABLE (priv->tasks_view);
    e_calendar_table_delete_selected (cal_table);
}

static char *
create_sexp (void)
{
    char *sexp;

    sexp = g_strdup ("(and (= (get-vtype) \"VTODO\") (is-completed?))");
#if 0
    g_print ("Calendar model sexp:\n%s\n", sexp);
#endif

    return sexp;
}

/* Callback used when a component is updated in the live query */
static void
query_obj_updated_cb (CalQuery *query, const char *uid,
              gboolean query_in_progress, int n_scanned, int total,
              gpointer data)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    
    tasks = E_TASKS (data);
    priv = tasks->priv;
    
    cal_client_remove_object (priv->client, uid);
}

/* Callback used when an evaluation error occurs when running a query */
static void
query_eval_error_cb (CalQuery *query, const char *error_str, gpointer data)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    
    tasks = E_TASKS (data);
    priv = tasks->priv;
    
    g_warning ("eval error: %s\n", error_str);

    set_status_message (tasks, NULL);

    gtk_signal_disconnect_by_data (GTK_OBJECT (priv->query), tasks);
    gtk_object_unref (GTK_OBJECT (priv->query));
    priv->query = NULL;
}

static void
query_query_done_cb (CalQuery *query, CalQueryDoneStatus status, const char *error_str, gpointer data)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    
    tasks = E_TASKS (data);
    priv = tasks->priv;
    
    if (status != CAL_QUERY_DONE_SUCCESS)
        g_warning ("query done: %s\n", error_str);

    set_status_message (tasks, NULL);

    gtk_signal_disconnect_by_data (GTK_OBJECT (priv->query), tasks);
    gtk_object_unref (GTK_OBJECT (priv->query));
    priv->query = NULL;
}
/**
 * e_tasks_expunge:
 * @tasks: A tasks control widget
 * 
 * Removes all tasks marked as completed
 **/
void
e_tasks_delete_completed (ETasks *tasks)
{
    ETasksPrivate *priv;
    char *sexp;
    
    g_return_if_fail (tasks != NULL);
    g_return_if_fail (E_IS_TASKS (tasks));

    priv = tasks->priv;

    /* If we have a query, we are already expunging */
    if (priv->query)
        return;

    sexp = create_sexp ();

    set_status_message (tasks, _("Expunging"));
    priv->query = cal_client_get_query (priv->client, sexp);
    g_free (sexp);

    if (!priv->query) {
        set_status_message (tasks, NULL);
        g_message ("update_query(): Could not create the query");
        return;
    }

    gtk_signal_connect (GTK_OBJECT (priv->query), "obj_updated",
                GTK_SIGNAL_FUNC (query_obj_updated_cb), tasks);
    gtk_signal_connect (GTK_OBJECT (priv->query), "query_done",
                GTK_SIGNAL_FUNC (query_query_done_cb), tasks);
    gtk_signal_connect (GTK_OBJECT (priv->query), "eval_error",
                GTK_SIGNAL_FUNC (query_eval_error_cb), tasks);
}

/* Callback used from the view collection when we need to display a new view */
static void
display_view_cb (GalViewInstance *instance, GalView *view, gpointer data)
{
    ETasks *tasks;

    tasks = E_TASKS (data);

    if (GAL_IS_VIEW_ETABLE (view)) {
        e_table_set_state_object (e_table_scrolled_get_table (E_TABLE_SCROLLED (E_CALENDAR_TABLE (tasks->priv->tasks_view)->etable)),
                      GAL_VIEW_ETABLE (view)->state);
    }
}

/**
 * e_tasks_setup_view_menus:
 * @tasks: A tasks widget.
 * @uic: UI controller to use for the menus.
 * 
 * Sets up the #GalView menus for a tasks control.  This function should be
 * called from the Bonobo control activation callback for this tasks control.
 * Also, the menus should be discarded using e_tasks_discard_view_menus().
 **/
void
e_tasks_setup_view_menus (ETasks *tasks, BonoboUIComponent *uic)
{
    ETasksPrivate *priv;
    GalViewFactory *factory;
    ETableSpecification *spec;
    char *dir;
    static GalViewCollection *collection = NULL;

    g_return_if_fail (tasks != NULL);
    g_return_if_fail (E_IS_TASKS (tasks));
    g_return_if_fail (uic != NULL);
    g_return_if_fail (BONOBO_IS_UI_COMPONENT (uic));

    priv = tasks->priv;

    g_return_if_fail (priv->view_instance == NULL);

    g_assert (priv->view_instance == NULL);
    g_assert (priv->view_menus == NULL);

    /* Create the view instance */

    if (collection == NULL) {
        collection = gal_view_collection_new ();

        dir = gnome_util_prepend_user_home ("/evolution/views/tasks/");
        gal_view_collection_set_storage_directories (collection,
                                 EVOLUTION_DATADIR "/evolution/views/tasks/",
                                 dir);
        g_free (dir);

        /* Create the views */

        spec = e_table_specification_new ();
        e_table_specification_load_from_file (spec, 
                              EVOLUTION_ETSPECDIR "/e-calendar-table.etspec");

        factory = gal_view_factory_etable_new (spec);
        gtk_object_unref (GTK_OBJECT (spec));
        gal_view_collection_add_factory (collection, factory);
        gtk_object_unref (GTK_OBJECT (factory));

        /* Load the collection and create the menus */

        gal_view_collection_load (collection);
    }

    priv->view_instance = gal_view_instance_new (collection, cal_client_get_uri (priv->client));

    priv->view_menus = gal_view_menus_new (priv->view_instance);
    gal_view_menus_apply (priv->view_menus, uic, NULL);
    gtk_signal_connect (GTK_OBJECT (priv->view_instance), "display_view",
                GTK_SIGNAL_FUNC (display_view_cb), tasks);
    display_view_cb (priv->view_instance, gal_view_instance_get_current_view (priv->view_instance), tasks);
}

/**
 * e_tasks_discard_view_menus:
 * @tasks: A tasks widget.
 * 
 * Discards the #GalView menus used by a tasks control.  This function should be
 * called from the Bonobo control deactivation callback for this tasks control.
 * The menus should have been set up with e_tasks_setup_view_menus().
 **/
void
e_tasks_discard_view_menus (ETasks *tasks)
{
    ETasksPrivate *priv;

    g_return_if_fail (tasks != NULL);
    g_return_if_fail (E_IS_TASKS (tasks));

    priv = tasks->priv;

    g_return_if_fail (priv->view_instance != NULL);

    g_assert (priv->view_instance != NULL);
    g_assert (priv->view_menus != NULL);

    gtk_object_unref (GTK_OBJECT (priv->view_instance));
    priv->view_instance = NULL;

    gtk_object_unref (GTK_OBJECT (priv->view_menus));
    priv->view_menus = NULL;
}

/**
 * e_tasks_get_calendar_table:
 * @tasks: A tasks widget.
 * 
 * Queries the #ECalendarTable contained in a tasks widget.
 * 
 * Return value: The #ECalendarTable that the tasks widget uses to display its
 * information.
 **/
ECalendarTable *
e_tasks_get_calendar_table (ETasks *tasks)
{
    ETasksPrivate *priv;

    g_return_val_if_fail (tasks != NULL, NULL);
    g_return_val_if_fail (E_IS_TASKS (tasks), NULL);

    priv = tasks->priv;
    return E_CALENDAR_TABLE (priv->tasks_view);
}

/* This updates all the preference settings for all the ETasks widgets in use.
 */
void
e_tasks_update_all_config_settings  (void)
{
    ETasks *tasks;
    ETasksPrivate *priv;
    GList *elem;
    char *location;
    icaltimezone *zone;

    location = calendar_config_get_timezone ();
    zone = icaltimezone_get_builtin_timezone (location);

    for (elem = all_tasks; elem; elem = elem->next) {
        tasks = E_TASKS (elem->data);
        priv = tasks->priv;

        calendar_config_configure_e_calendar_table (E_CALENDAR_TABLE (priv->tasks_view));

        if (zone)
            cal_client_set_default_timezone (priv->client, zone);
    }
}