aboutsummaryrefslogtreecommitdiffstats
path: root/libempathy-gtk/empathy-individual-linker.c
blob: 793c2827fa09a4d30f03f281f6db161a71fd597f (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
/*
 * Copyright (C) 2010 Collabora Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 *
 * Authors: Philip Withnall <philip.withnall@collabora.co.uk>
 */

#include "config.h"

#include <string.h>

#include <glib/gi18n-lib.h>
#include <gtk/gtk.h>

#include <telepathy-glib/util.h>

#include <folks/folks.h>

#include <libempathy/empathy-individual-manager.h>
#include <libempathy/empathy-utils.h>

#include "empathy-individual-linker.h"
#include "empathy-individual-store.h"
#include "empathy-individual-view.h"
#include "empathy-individual-widget.h"
#include "empathy-persona-store.h"
#include "empathy-persona-view.h"

/**
 * SECTION:empathy-individual-linker
 * @title:EmpathyIndividualLinker
 * @short_description: A widget used to link together #FolksIndividual<!-- -->s
 * @include: libempathy-gtk/empathy-individual-linker.h
 *
 * #EmpathyIndividualLinker is a widget which allows selection of several
 * #FolksIndividual<!-- -->s to link together to form a single new individual.
 * The widget provides a preview of the linked individual.
 */

/**
 * EmpathyIndividualLinker:
 * @parent: parent object
 *
 * Widget which extends #GtkBin to provide a list of #FolksIndividual<!-- -->s
 * to link together.
 */

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyIndividualLinker)

typedef struct {
  EmpathyIndividualStore *individual_store; /* owned */
  EmpathyIndividualView *individual_view; /* child widget */
  GtkWidget *preview_widget; /* child widget */
  EmpathyPersonaStore *persona_store; /* owned */
  GtkTreeViewColumn *toggle_column; /* child widget */
  GtkCellRenderer *toggle_renderer; /* child widget */
  GtkWidget *search_widget; /* child widget */

  FolksIndividual *start_individual; /* owned, allow-none */
  FolksIndividual *new_individual; /* owned, allow-none */

  /* Stores the Individuals whose Personas have been added to the
   * new_individual */
  /* unowned Individual (borrowed from EmpathyIndividualStore) -> bool */
  GHashTable *changed_individuals;
} EmpathyIndividualLinkerPriv;

enum {
  PROP_START_INDIVIDUAL = 1,
  PROP_HAS_CHANGED,
};

G_DEFINE_TYPE (EmpathyIndividualLinker, empathy_individual_linker,
    GTK_TYPE_BOX);

static void
contact_toggle_cell_data_func (GtkTreeViewColumn *tree_column,
    GtkCellRenderer *cell,
    GtkTreeModel *tree_model,
    GtkTreeIter *iter,
    EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv;
  FolksIndividual *individual;
  gboolean is_group, individual_added;

  priv = GET_PRIV (self);

  gtk_tree_model_get (tree_model, iter,
      EMPATHY_INDIVIDUAL_STORE_COL_IS_GROUP, &is_group,
      EMPATHY_INDIVIDUAL_STORE_COL_INDIVIDUAL, &individual,
      -1);

  individual_added = GPOINTER_TO_UINT (g_hash_table_lookup (
      priv->changed_individuals, individual));

  /* We don't want to show checkboxes next to the group rows.
   * All checkboxes should be sensitive except the checkbox for the start
   * individual, which should be permanently active and insensitive */
  g_object_set (cell,
      "visible", !is_group,
      "sensitive", individual != priv->start_individual,
      "activatable", individual != priv->start_individual,
      "active", individual_added || individual == priv->start_individual,
      NULL);

  tp_clear_object (&individual);
}

static void
update_toggle_renderers (EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (self);

  /* Re-setting the cell data func to the same function causes a refresh of the
   * entire column, ensuring that each toggle button is correctly active or
   * inactive. This is necessary because one Individual might appear multiple
   * times in the list (in different groups), so toggling one instance of the
   * Individual should toggle all of them. */
  gtk_tree_view_column_set_cell_data_func (priv->toggle_column,
      priv->toggle_renderer,
      (GtkTreeCellDataFunc) contact_toggle_cell_data_func, self, NULL);
}

static void
link_individual (EmpathyIndividualLinker *self,
    FolksIndividual *individual)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (self);
  GeeSet *old_personas, *new_personas;
  GeeHashSet *final_personas;
  gboolean personas_changed;

  /* Add the individual to the link */
  g_hash_table_insert (priv->changed_individuals, individual,
      GUINT_TO_POINTER (TRUE));

  /* Add personas which are in @individual to priv->new_individual, adding them
   * to the set of personas. */
  old_personas = folks_individual_get_personas (individual);
  new_personas = folks_individual_get_personas (priv->new_individual);
  final_personas = gee_hash_set_new (FOLKS_TYPE_PERSONA, g_object_ref,
      g_object_unref, g_direct_hash, g_direct_equal);
  gee_collection_add_all (GEE_COLLECTION (final_personas),
      GEE_COLLECTION (old_personas));
  personas_changed = gee_collection_add_all (GEE_COLLECTION (final_personas),
      GEE_COLLECTION (new_personas));

  /* avoid updating all values in the Individual if the set of personas doesn't
   * actually change */
  if (personas_changed)
    {
      folks_individual_set_personas (priv->new_individual,
          GEE_SET (final_personas));
    }

  g_clear_object (&final_personas);

  /* Update the toggle renderers, so that if this Individual is listed in
   * another group in the EmpathyIndividualView, the toggle button for that
   * group is updated. */
  update_toggle_renderers (self);

  g_object_notify (G_OBJECT (self), "has-changed");
}

static void
unlink_individual (EmpathyIndividualLinker *self,
    FolksIndividual *individual)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (self);
  GeeSet *removed_personas, *old_personas;
  GeeHashSet *final_personas;
  gboolean personas_changed;

  /* Remove the individual from the link */
  g_hash_table_remove (priv->changed_individuals, individual);

  /* Remove personas which are in @individual from priv->new_individual. */
  old_personas = folks_individual_get_personas (priv->new_individual);
  removed_personas = folks_individual_get_personas (individual);

  final_personas = gee_hash_set_new (FOLKS_TYPE_PERSONA, g_object_ref,
      g_object_unref, g_direct_hash, g_direct_equal);
  gee_collection_add_all (GEE_COLLECTION (final_personas),
      GEE_COLLECTION (old_personas));
  personas_changed = gee_collection_remove_all (GEE_COLLECTION (final_personas),
      GEE_COLLECTION (removed_personas));

  if (personas_changed)
    {
      folks_individual_set_personas (priv->new_individual,
          GEE_SET (final_personas));
    }

  g_clear_object (&final_personas);

  /* Update the toggle renderers, so that if this Individual is listed in
   * another group in the EmpathyIndividualView, the toggle button for that
   * group is updated. */
  update_toggle_renderers (self);

  g_object_notify (G_OBJECT (self), "has-changed");
}

static void
toggle_individual_row (EmpathyIndividualLinker *self,
    GtkTreePath *path)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (self);
  FolksIndividual *individual;
  GtkTreeIter iter;
  GtkTreeModel *tree_model;
  gboolean individual_added;

  tree_model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->individual_view));

  gtk_tree_model_get_iter (tree_model, &iter, path);
  gtk_tree_model_get (tree_model, &iter,
      EMPATHY_INDIVIDUAL_STORE_COL_INDIVIDUAL, &individual,
      -1);

  if (individual == NULL)
    return;

  individual_added = GPOINTER_TO_UINT (g_hash_table_lookup (
      priv->changed_individuals, individual));

  /* Toggle the Individual's linked status */
  if (individual_added)
    unlink_individual (self, individual);
  else
    link_individual (self, individual);

  g_object_unref (individual);
}

static void
row_activated_cb (EmpathyIndividualView *view,
    GtkTreePath *path,
    GtkTreeViewColumn *column,
    EmpathyIndividualLinker *self)
{
  toggle_individual_row (self, path);
}

static void
row_toggled_cb (GtkCellRendererToggle *cell_renderer,
    const gchar *path,
    EmpathyIndividualLinker *self)
{
  GtkTreePath *tree_path = gtk_tree_path_new_from_string (path);
  toggle_individual_row (self, tree_path);
  gtk_tree_path_free (tree_path);
}

static gboolean
individual_view_drag_motion_cb (GtkWidget *widget,
    GdkDragContext *context,
    gint x,
    gint y,
    guint time_)
{
  EmpathyIndividualView *view = EMPATHY_INDIVIDUAL_VIEW (widget);
  GdkAtom target;

  target = gtk_drag_dest_find_target (GTK_WIDGET (view), context, NULL);

  if (target == gdk_atom_intern_static_string ("text/x-persona-id"))
    {
      GtkTreePath *path;

      /* FIXME: It doesn't make sense for us to highlight a specific row or
       * position to drop a Persona in, so just highlight the entire widget.
       * Since I can't find a way to do this, just highlight the first possible
       * position in the tree. */
      gdk_drag_status (context, gdk_drag_context_get_suggested_action (context),
          time_);

      path = gtk_tree_path_new_first ();
      gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (view), path,
          GTK_TREE_VIEW_DROP_BEFORE);
      gtk_tree_path_free (path);

      return TRUE;
    }

  /* Unknown or unhandled drag target */
  gdk_drag_status (context, GDK_ACTION_DEFAULT, time_);
  gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (view), NULL, 0);

  return FALSE;
}

static gboolean
individual_view_drag_persona_received_cb (EmpathyIndividualView *view,
    GdkDragAction action,
    FolksPersona *persona,
    FolksIndividual *individual,
    EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (self);

  /* A Persona has been dragged onto the EmpathyIndividualView (from the
   * EmpathyPersonaView), so we try to remove the Individual which contains
   * the Persona from the link. */
  if (individual != priv->start_individual)
    {
      unlink_individual (self, individual);
      return TRUE;
    }

  return FALSE;
}

static gboolean
persona_view_drag_individual_received_cb (EmpathyPersonaView *view,
    GdkDragAction action,
    FolksIndividual *individual,
    EmpathyIndividualLinker *self)
{
  /* An Individual has been dragged onto the EmpathyPersonaView (from the
   * EmpathyIndividualView), so we try to add the Individual to the link. */
  link_individual (self, individual);

  return TRUE;
}

static void
set_up (EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv;
  EmpathyIndividualManager *individual_manager;
  GtkWidget *top_vbox;
  GtkPaned *paned;
  GtkWidget *label, *scrolled_window;
  GtkBox *vbox;
  EmpathyPersonaView *persona_view;
  gchar *tmp;
  GtkWidget *alignment;

  priv = GET_PRIV (self);

  top_vbox = gtk_vbox_new (FALSE, 6);

  /* Layout panes */
  paned = GTK_PANED (gtk_hpaned_new ());

  /* Left column heading */
  alignment = gtk_alignment_new (0.5, 0.5, 1, 1);
  gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 0, 0, 0, 6);
  gtk_widget_show (alignment);

  vbox = GTK_BOX (gtk_vbox_new (FALSE, 6));
  label = gtk_label_new (NULL);
  tmp = g_strdup_printf ("<b>%s</b>", _("Select contacts to link"));
  gtk_label_set_markup (GTK_LABEL (label), tmp);
  g_free (tmp);
  gtk_box_pack_start (vbox, label, FALSE, TRUE, 0);
  gtk_widget_show (label);

  /* Individual selector */
  individual_manager = empathy_individual_manager_dup_singleton ();
  priv->individual_store = empathy_individual_store_new (individual_manager);
  g_object_unref (individual_manager);

  empathy_individual_store_set_show_protocols (priv->individual_store, FALSE);

  priv->individual_view = empathy_individual_view_new (priv->individual_store,
      EMPATHY_INDIVIDUAL_VIEW_FEATURE_INDIVIDUAL_DRAG |
      EMPATHY_INDIVIDUAL_VIEW_FEATURE_INDIVIDUAL_DROP |
      EMPATHY_INDIVIDUAL_VIEW_FEATURE_PERSONA_DROP,
      EMPATHY_INDIVIDUAL_FEATURE_NONE);
  empathy_individual_view_set_show_offline (priv->individual_view, TRUE);
  empathy_individual_view_set_show_untrusted (priv->individual_view, FALSE);

  g_signal_connect (priv->individual_view, "row-activated",
      (GCallback) row_activated_cb, self);
  g_signal_connect (priv->individual_view, "drag-motion",
      (GCallback) individual_view_drag_motion_cb, self);
  g_signal_connect (priv->individual_view, "drag-persona-received",
      (GCallback) individual_view_drag_persona_received_cb, self);

  /* Add a checkbox column to the selector */
  priv->toggle_renderer = gtk_cell_renderer_toggle_new ();
  g_signal_connect (priv->toggle_renderer, "toggled",
      (GCallback) row_toggled_cb, self);

  priv->toggle_column = gtk_tree_view_column_new ();
  gtk_tree_view_column_pack_start (priv->toggle_column, priv->toggle_renderer,
      FALSE);
  gtk_tree_view_column_set_cell_data_func (priv->toggle_column,
      priv->toggle_renderer,
      (GtkTreeCellDataFunc) contact_toggle_cell_data_func, self, NULL);

  gtk_tree_view_insert_column (GTK_TREE_VIEW (priv->individual_view),
      priv->toggle_column, 0);

  scrolled_window = gtk_scrolled_window_new (NULL, NULL);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
      GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
      GTK_SHADOW_IN);
  gtk_container_add (GTK_CONTAINER (scrolled_window),
      GTK_WIDGET (priv->individual_view));
  gtk_widget_show (GTK_WIDGET (priv->individual_view));

  gtk_box_pack_start (vbox, scrolled_window, TRUE, TRUE, 0);
  gtk_widget_show (scrolled_window);

  /* Live search */
  priv->search_widget = empathy_live_search_new (
      GTK_WIDGET (priv->individual_view));
  empathy_individual_view_set_live_search (priv->individual_view,
      EMPATHY_LIVE_SEARCH (priv->search_widget));

  gtk_box_pack_end (vbox, priv->search_widget, FALSE, TRUE, 0);

  gtk_container_add (GTK_CONTAINER (alignment), GTK_WIDGET (vbox));
  gtk_paned_pack1 (paned, alignment, TRUE, FALSE);
  gtk_widget_show (GTK_WIDGET (vbox));

  /* Right column heading */
  alignment = gtk_alignment_new (0.5, 0.5, 1, 1);
  gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 0, 0, 6, 0);
  gtk_widget_show (alignment);

  vbox = GTK_BOX (gtk_vbox_new (FALSE, 6));
  label = gtk_label_new (NULL);
  tmp = g_strdup_printf ("<b>%s</b>", _("New contact preview"));
  gtk_label_set_markup (GTK_LABEL (label), tmp);
  g_free (tmp);
  gtk_box_pack_start (vbox, label, FALSE, TRUE, 0);
  gtk_widget_show (label);

  /* New individual preview */
  priv->preview_widget = empathy_individual_widget_new (priv->new_individual,
      EMPATHY_INDIVIDUAL_WIDGET_SHOW_DETAILS);
  gtk_box_pack_start (vbox, priv->preview_widget, FALSE, TRUE, 0);
  gtk_widget_show (priv->preview_widget);

  /* Persona list */
  scrolled_window = gtk_scrolled_window_new (NULL, NULL);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
      GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
      GTK_SHADOW_IN);

  priv->persona_store = empathy_persona_store_new (priv->new_individual);
  empathy_persona_store_set_show_protocols (priv->persona_store, TRUE);
  persona_view = empathy_persona_view_new (priv->persona_store,
      EMPATHY_PERSONA_VIEW_FEATURE_ALL);
  empathy_persona_view_set_show_offline (persona_view, TRUE);

  g_signal_connect (persona_view, "drag-individual-received",
      (GCallback) persona_view_drag_individual_received_cb, self);

  gtk_container_add (GTK_CONTAINER (scrolled_window),
      GTK_WIDGET (persona_view));
  gtk_widget_show (GTK_WIDGET (persona_view));

  gtk_box_pack_start (vbox, scrolled_window, TRUE, TRUE, 0);
  gtk_widget_show (scrolled_window);

  gtk_container_add (GTK_CONTAINER (alignment), GTK_WIDGET (vbox));
  gtk_paned_pack2 (paned, alignment, TRUE, FALSE);
  gtk_widget_show (GTK_WIDGET (vbox));

  gtk_widget_show (GTK_WIDGET (paned));

  /* Footer label */
  label = gtk_label_new (NULL);
  tmp = g_strdup_printf ("<i>%s</i>",
      _("Contacts selected in the list on the left will be linked together."));
  gtk_label_set_markup (GTK_LABEL (label), tmp);
  g_free (tmp);
  gtk_widget_show (label);

  gtk_box_pack_start (GTK_BOX (top_vbox), GTK_WIDGET (paned), TRUE, TRUE, 0);
  gtk_box_pack_start (GTK_BOX (top_vbox), label, FALSE, TRUE, 0);

  /* Add the main vbox to the bin */
  gtk_box_pack_start (GTK_BOX (self), GTK_WIDGET (top_vbox), TRUE, TRUE, 0);
  gtk_widget_show (GTK_WIDGET (top_vbox));
}

static void
empathy_individual_linker_init (EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
      EMPATHY_TYPE_INDIVIDUAL_LINKER, EmpathyIndividualLinkerPriv);

  self->priv = priv;

  priv->changed_individuals = g_hash_table_new (NULL, NULL);

  set_up (self);
}

static void
get_property (GObject *object,
    guint param_id,
    GValue *value,
    GParamSpec *pspec)
{
  EmpathyIndividualLinkerPriv *priv;

  priv = GET_PRIV (object);

  switch (param_id)
    {
      case PROP_START_INDIVIDUAL:
        g_value_set_object (value, priv->start_individual);
        break;
      case PROP_HAS_CHANGED:
        g_value_set_boolean (value, empathy_individual_linker_get_has_changed (
            EMPATHY_INDIVIDUAL_LINKER (object)));
        break;
      default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    }
}

static void
set_property (GObject *object,
    guint param_id,
    const GValue *value,
    GParamSpec *pspec)
{
  switch (param_id)
    {
      case PROP_START_INDIVIDUAL:
        empathy_individual_linker_set_start_individual (
            EMPATHY_INDIVIDUAL_LINKER (object), g_value_get_object (value));
        break;
      default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    }
}

static void
dispose (GObject *object)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (object);

  tp_clear_object (&priv->individual_store);
  tp_clear_object (&priv->persona_store);
  tp_clear_object (&priv->start_individual);
  tp_clear_object (&priv->new_individual);

  G_OBJECT_CLASS (empathy_individual_linker_parent_class)->dispose (object);
}

static void
finalize (GObject *object)
{
  EmpathyIndividualLinkerPriv *priv = GET_PRIV (object);

  g_hash_table_destroy (priv->changed_individuals);

  G_OBJECT_CLASS (empathy_individual_linker_parent_class)->finalize (object);
}

static void
empathy_individual_linker_class_init (EmpathyIndividualLinkerClass *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);

  object_class->get_property = get_property;
  object_class->set_property = set_property;
  object_class->dispose = dispose;
  object_class->finalize = finalize;

  /**
   * EmpathyIndividualLinker:start-individual:
   *
   * The #FolksIndividual to link other individuals to. This individual is
   * selected by default in the list of individuals, and cannot be unselected.
   * This ensures that empathy_individual_linker_get_linked_personas() will
   * always return at least one persona to link.
   */
  g_object_class_install_property (object_class, PROP_START_INDIVIDUAL,
      g_param_spec_object ("start-individual",
          "Start Individual",
          "The #FolksIndividual to link other individuals to.",
          FOLKS_TYPE_INDIVIDUAL,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  /**
   * EmpathyIndividualLinker:has-changed:
   *
   * Whether #FolksIndividual<!-- -->s have been added to or removed from
   * the linked individual currently displayed in the widget.
   *
   * This will be %FALSE after the widget is initialised, and set to %TRUE when
   * an individual is checked in the individual view on the left of the widget.
   * If the individual is later unchecked, this will be reset to %FALSE, etc.
   */
  g_object_class_install_property (object_class, PROP_HAS_CHANGED,
      g_param_spec_boolean ("has-changed",
          "Changed?",
          "Whether individuals have been added to or removed from the linked "
          "individual currently displayed in the widget.",
          FALSE,
          G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));

  g_type_class_add_private (object_class, sizeof (EmpathyIndividualLinkerPriv));
}

/**
 * empathy_individual_linker_new:
 * @start_individual: (allow-none): the #FolksIndividual to link to, or %NULL
 *
 * Creates a new #EmpathyIndividualLinker.
 *
 * Return value: a new #EmpathyIndividualLinker
 */
GtkWidget *
empathy_individual_linker_new (FolksIndividual *start_individual)
{
  g_return_val_if_fail (start_individual == NULL ||
      FOLKS_IS_INDIVIDUAL (start_individual), NULL);

  return g_object_new (EMPATHY_TYPE_INDIVIDUAL_LINKER,
      "start-individual", start_individual,
      NULL);
}

/**
 * empathy_individual_linker_get_start_individual:
 * @self: an #EmpathyIndividualLinker
 *
 * Get the value of #EmpathyIndividualLinker:start-individual.
 *
 * Return value: (transfer none): the start individual for linking, or %NULL
 */
FolksIndividual *
empathy_individual_linker_get_start_individual (EmpathyIndividualLinker *self)
{
  g_return_val_if_fail (EMPATHY_IS_INDIVIDUAL_LINKER (self), NULL);

  return GET_PRIV (self)->start_individual;
}

/**
 * empathy_individual_linker_set_start_individual:
 * @self: an #EmpathyIndividualLinker
 * @individual: (allow-none): the start individual, or %NULL
 *
 * Set the value of #EmpathyIndividualLinker:start-individual to @individual.
 */
void
empathy_individual_linker_set_start_individual (EmpathyIndividualLinker *self,
    FolksIndividual *individual)
{
  EmpathyIndividualLinkerPriv *priv;

  g_return_if_fail (EMPATHY_IS_INDIVIDUAL_LINKER (self));
  g_return_if_fail (individual == NULL || FOLKS_IS_INDIVIDUAL (individual));

  priv = GET_PRIV (self);

  tp_clear_object (&priv->start_individual);
  tp_clear_object (&priv->new_individual);
  g_hash_table_remove_all (priv->changed_individuals);

  if (individual != NULL)
    {
      priv->start_individual = g_object_ref (individual);
      priv->new_individual = folks_individual_new (
          folks_individual_get_personas (individual));
      empathy_individual_view_set_store (priv->individual_view,
          priv->individual_store);
    }
  else
    {
      priv->start_individual = NULL;
      priv->new_individual = NULL;

      /* We only display Individuals in the individual view if we have a
       * new_individual to link them into */
      empathy_individual_view_set_store (priv->individual_view, NULL);
    }

  empathy_individual_widget_set_individual (
      EMPATHY_INDIVIDUAL_WIDGET (priv->preview_widget), priv->new_individual);
  empathy_persona_store_set_individual (priv->persona_store,
      priv->new_individual);

  g_object_freeze_notify (G_OBJECT (self));
  g_object_notify (G_OBJECT (self), "start-individual");
  g_object_notify (G_OBJECT (self), "has-changed");
  g_object_thaw_notify (G_OBJECT (self));
}

/**
 * empathy_individual_linker_get_linked_personas:
 * @self: an #EmpathyIndividualLinker
 *
 * Return a list of the #FolksPersona<!-- -->s which comprise the linked
 * individual currently displayed in the widget.
 *
 * The return value is guaranteed to contain at least one element.
 *
 * Return value: (transfer none) (element-type Folks.Persona): a set of
 * #FolksPersona<!-- -->s to link together
 */
GeeSet *
empathy_individual_linker_get_linked_personas (EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv;
  GeeSet *personas;

  g_return_val_if_fail (EMPATHY_IS_INDIVIDUAL_LINKER (self), NULL);

  priv = GET_PRIV (self);

  if (priv->new_individual == NULL)
    return NULL;

  personas = folks_individual_get_personas (priv->new_individual);
  g_assert (personas != NULL);
  return personas;
}

/**
 * empathy_individual_linker_get_has_changed:
 * @self: an #EmpathyIndividualLinker
 *
 * Return whether #FolksIndividual<!-- -->s have been added to or removed from
 * the linked individual currently displayed in the widget.
 *
 * This will be %FALSE after the widget is initialised, and set to %TRUE when
 * an individual is checked in the individual view on the left of the widget.
 * If the individual is later unchecked, this will be reset to %FALSE, etc.
 *
 * Return value: %TRUE if the linked individual has been changed, %FALSE
 * otherwise
 */
gboolean
empathy_individual_linker_get_has_changed (EmpathyIndividualLinker *self)
{
  EmpathyIndividualLinkerPriv *priv;

  g_return_val_if_fail (EMPATHY_IS_INDIVIDUAL_LINKER (self), FALSE);

  priv = GET_PRIV (self);

  return (g_hash_table_size (priv->changed_individuals) > 0) ? TRUE : FALSE;
}

void
empathy_individual_linker_set_search_text (EmpathyIndividualLinker *self,
    const gchar *search_text)
{
  g_return_if_fail (EMPATHY_IS_INDIVIDUAL_LINKER (self));

  empathy_live_search_set_text (
      EMPATHY_LIVE_SEARCH (GET_PRIV (self)->search_widget), search_text);
}