aboutsummaryrefslogtreecommitdiff
path: root/src/indicator-sound.c
blob: 626f3b81a8e214a87459cd304df33cc49c4899e3 (plain)
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
/*
Copyright 2010 Canonical Ltd.

Authors:
    Conor Curran <conor.curran@canonical.com>

This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License version 3, 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 warranties of
MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*/

#include <math.h>
#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <libdbusmenu-gtk/menu.h>
#include <libido/idoscalemenuitem.h>

#include <gio/gio.h>

#include "indicator-sound.h"
#include "transport-widget.h"
#include "metadata-widget.h"
#include "title-widget.h"
#include "volume-widget.h"
#include "voip-input-widget.h"
#include "dbus-shared-names.h"
#include "sound-state-manager.h"

#include "gen-sound-service.xml.h"
#include "common-defs.h"

typedef struct _IndicatorSoundPrivate IndicatorSoundPrivate;

struct _IndicatorSoundPrivate
{
  GtkWidget* volume_widget;
  GtkWidget* voip_widget;
  GList* transport_widgets_list;
  GDBusProxy *dbus_proxy; 
  SoundStateManager* state_manager;
};

#define INDICATOR_SOUND_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), INDICATOR_SOUND_TYPE, IndicatorSoundPrivate))

// GObject Boiler plate
INDICATOR_SET_VERSION
INDICATOR_SET_TYPE(INDICATOR_SOUND_TYPE)

// GObject Boiler plate
static void indicator_sound_class_init (IndicatorSoundClass *klass);
static void indicator_sound_init       (IndicatorSound *self);
static void indicator_sound_dispose    (GObject *object);
static void indicator_sound_finalize   (GObject *object);
G_DEFINE_TYPE (IndicatorSound, indicator_sound, INDICATOR_OBJECT_TYPE);

//GTK+ items
static GtkLabel * get_label (IndicatorObject * io);
static GtkImage * get_icon (IndicatorObject * io);
static GtkMenu *  get_menu (IndicatorObject * io);
static const gchar * get_accessible_desc (IndicatorObject * io);
static void indicator_sound_scroll (IndicatorObject* io,
                                    gint delta,
                                    IndicatorScrollDirection direction);

//key/moust event handlers
static gboolean key_press_cb(GtkWidget* widget, GdkEventKey* event, gpointer data);
static gboolean key_release_cb(GtkWidget* widget, GdkEventKey* event, gpointer data);

//custom widget realisation methods
static gboolean new_volume_slider_widget (DbusmenuMenuitem * newitem,
                                          DbusmenuMenuitem * parent,
                                          DbusmenuClient * client,
                                          gpointer user_data);
static gboolean new_voip_slider_widget (DbusmenuMenuitem * newitem,
                                          DbusmenuMenuitem * parent,
                                          DbusmenuClient * client,
                                          gpointer user_data);
static gboolean new_transport_widget (DbusmenuMenuitem * newitem,
                                      DbusmenuMenuitem * parent,
                                      DbusmenuClient * client,
                                      gpointer user_data);                                     
static gboolean new_metadata_widget (DbusmenuMenuitem * newitem,
                                     DbusmenuMenuitem * parent,
                                     DbusmenuClient * client,
                                     gpointer user_data);
static gboolean new_title_widget (DbusmenuMenuitem * newitem,
                                  DbusmenuMenuitem * parent,
                                  DbusmenuClient * client,
                                  gpointer user_data);

// DBUS communication
static GDBusNodeInfo *node_info = NULL;
static GDBusInterfaceInfo *interface_info = NULL;
static void create_connection_to_service (GObject *source_object,
                                          GAsyncResult *res,
                                          gpointer user_data);
static void connection_changed (IndicatorServiceManager * sm,
                                gboolean connected,
                                gpointer userdata);

static void
indicator_sound_class_init (IndicatorSoundClass *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);

  object_class->dispose = indicator_sound_dispose;
  object_class->finalize = indicator_sound_finalize;

  IndicatorObjectClass *io_class = INDICATOR_OBJECT_CLASS(klass);

  g_type_class_add_private (klass, sizeof (IndicatorSoundPrivate));
  
  io_class->get_label = get_label;
  io_class->get_image = get_icon;
  io_class->get_menu  = get_menu;
  io_class->get_accessible_desc = get_accessible_desc;
  io_class->scroll    = indicator_sound_scroll;
}

static void
indicator_sound_init (IndicatorSound *self)
{
  self->service = NULL;
  self->service = indicator_service_manager_new_version(INDICATOR_SOUND_DBUS_NAME,
                                                        INDICATOR_SOUND_DBUS_VERSION);
  
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(self);
  priv->volume_widget = NULL;
  priv->voip_widget = NULL;
  priv->dbus_proxy = NULL;
  GList* t_list = NULL;
  priv->transport_widgets_list = t_list;
  priv->state_manager = g_object_new (SOUND_TYPE_STATE_MANAGER, NULL);

  g_signal_connect ( G_OBJECT(self->service),
                     INDICATOR_SERVICE_MANAGER_SIGNAL_CONNECTION_CHANGE,
                     G_CALLBACK(connection_changed), self );
}

static void
indicator_sound_dispose (GObject *object)
{
  IndicatorSound * self = INDICATOR_SOUND(object);
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(self);

  if (self->service != NULL) {
    g_object_unref(G_OBJECT(self->service));
    self->service = NULL;
  }
  g_list_free ( priv->transport_widgets_list );

  G_OBJECT_CLASS (indicator_sound_parent_class)->dispose (object);
  return;
}

static void
indicator_sound_finalize (GObject *object)
{
  G_OBJECT_CLASS (indicator_sound_parent_class)->finalize (object);
  return;
}

static GtkLabel *
get_label (IndicatorObject * io)
{
  return NULL;
}

static GtkImage *
get_icon (IndicatorObject * io)
{
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(INDICATOR_SOUND (io));
  gtk_widget_show( GTK_WIDGET(sound_state_manager_get_current_icon (priv->state_manager)) );  
  return sound_state_manager_get_current_icon (priv->state_manager);
}

/* Indicator based function to get the menu for the whole
   applet.  This starts up asking for the parts of the menu
   from the various services. */
static GtkMenu *
get_menu (IndicatorObject * io)
{
  DbusmenuGtkMenu* menu = dbusmenu_gtkmenu_new(INDICATOR_SOUND_DBUS_NAME,
                                               INDICATOR_SOUND_MENU_DBUS_OBJECT_PATH);
        
  DbusmenuGtkClient *client = dbusmenu_gtkmenu_get_client(menu);
  g_object_set_data (G_OBJECT (client), "indicator", io);
  dbusmenu_client_add_type_handler (DBUSMENU_CLIENT(client),
                                    DBUSMENU_VOLUME_MENUITEM_TYPE,
                                    new_volume_slider_widget);
  dbusmenu_client_add_type_handler (DBUSMENU_CLIENT(client),
                                    DBUSMENU_VOIP_INPUT_MENUITEM_TYPE,
                                    new_voip_slider_widget);
  dbusmenu_client_add_type_handler (DBUSMENU_CLIENT(client),
                                    DBUSMENU_TRANSPORT_MENUITEM_TYPE,
                                    new_transport_widget);
  dbusmenu_client_add_type_handler (DBUSMENU_CLIENT(client),
                                    DBUSMENU_METADATA_MENUITEM_TYPE,
                                    new_metadata_widget);
  dbusmenu_client_add_type_handler (DBUSMENU_CLIENT(client),
                                    DBUSMENU_TITLE_MENUITEM_TYPE,
                                    new_title_widget);
  // Note: Not ideal but all key handling needs to be managed here and then 
  // delegated to the appropriate widget. 
  g_signal_connect (menu, "key-press-event", G_CALLBACK(key_press_cb), io);
  g_signal_connect (menu, "key-release-event", G_CALLBACK(key_release_cb), io);
  
  return GTK_MENU(menu);
}

static const gchar *
get_accessible_desc (IndicatorObject * io)
{
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(io);

  if (priv->volume_widget != NULL){
    return g_strdup_printf(_("Volume (%'.0f%%)"), volume_widget_get_current_volume(priv->volume_widget));
  }

  return NULL;
}


static void
connection_changed (IndicatorServiceManager * sm,
                    gboolean connected,
                    gpointer user_data)
{
  IndicatorSound* indicator = INDICATOR_SOUND(user_data);
  g_return_if_fail ( IS_INDICATOR_SOUND (indicator) );
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE (indicator);
  GError *error = NULL;

  if (connected == FALSE){
    sound_state_manager_deal_with_disconnect (priv->state_manager);
    return;
    //TODO: Gracefully handle disconnection
    // do a timeout to wait for reconnection 
    // for 5 seconds and then if no connection message 
    // is received put the state at 'sink not available'
  }
  // If the proxy is not null and connected is true => its a reconnect,
  // we don't need to anything, gdbus takes care of the rest - bless.
  // just fetch the state.
  if (priv->dbus_proxy != NULL){
    g_dbus_proxy_call ( priv->dbus_proxy,
                        "GetSoundState",
                        NULL,
		                    G_DBUS_CALL_FLAGS_NONE,
                        -1,
                        NULL,
                        (GAsyncReadyCallback)sound_state_manager_get_state_cb,
                        priv->state_manager);  
    return;
  }
  
  if ( node_info == NULL ){
    node_info = g_dbus_node_info_new_for_xml ( _sound_service,
                                                &error );
    if (error != NULL) {
      g_warning( "Failed to get create interface info from xml: %s",
                 error->message );
      g_error_free(error);
      return;
    }
  }

  if (interface_info == NULL) {
    interface_info = g_dbus_node_info_lookup_interface (node_info,
                                                        INDICATOR_SOUND_DBUS_INTERFACE);
    if (interface_info == NULL) {
      g_error("Unable to find interface '" INDICATOR_SOUND_DBUS_INTERFACE "'");
    }
  }
  
  g_dbus_proxy_new_for_bus( G_BUS_TYPE_SESSION,
                            G_DBUS_PROXY_FLAGS_NONE,
                            interface_info,
                            INDICATOR_SOUND_DBUS_NAME,
                            INDICATOR_SOUND_SERVICE_DBUS_OBJECT_PATH,
                            INDICATOR_SOUND_DBUS_INTERFACE,
                            NULL,
                            create_connection_to_service,
                            indicator );
}

static void create_connection_to_service (GObject *source_object,
                                          GAsyncResult *res,
                                          gpointer user_data)
{
  IndicatorSound *self = INDICATOR_SOUND(user_data);
  GError *error = NULL;

  g_return_if_fail( IS_INDICATOR_SOUND(self) );

  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(self);

  priv->dbus_proxy = g_dbus_proxy_new_finish(res, &error);

  if (error != NULL) {
    g_warning("Failed to get dbus proxy: %s", error->message);
    g_error_free(error);
    return;
  }
  sound_state_manager_connect_to_dbus (priv->state_manager,
                                       priv->dbus_proxy);
  
}

static gboolean
new_transport_widget (DbusmenuMenuitem * newitem,
                      DbusmenuMenuitem * parent,
                      DbusmenuClient * client,
                      gpointer user_data)
{
  g_debug("indicator-sound: new_transport_bar() called ");

  GtkWidget* bar = NULL;
  IndicatorObject *io = NULL;

  g_return_val_if_fail(DBUSMENU_IS_MENUITEM(newitem), FALSE);
  g_return_val_if_fail(DBUSMENU_IS_GTKCLIENT(client), FALSE);

  bar = transport_widget_new(newitem);
  io = g_object_get_data (G_OBJECT (client), "indicator");
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(INDICATOR_SOUND (io));
  priv->transport_widgets_list = g_list_append ( priv->transport_widgets_list, bar );

  GtkMenuItem *menu_transport_bar = GTK_MENU_ITEM(bar);

  gtk_widget_show_all(bar);
  dbusmenu_gtkclient_newitem_base (DBUSMENU_GTKCLIENT(client),
                                   newitem,
                                   menu_transport_bar,
                                   parent);
  return TRUE;
}

static gboolean
new_metadata_widget (DbusmenuMenuitem * newitem,
                     DbusmenuMenuitem * parent,
                     DbusmenuClient * client,
                     gpointer user_data)
{
  g_debug("indicator-sound: new_metadata_widget");

  GtkWidget* metadata = NULL;

  g_return_val_if_fail(DBUSMENU_IS_MENUITEM(newitem), FALSE);
  g_return_val_if_fail(DBUSMENU_IS_GTKCLIENT(client), FALSE);

  metadata = metadata_widget_new (newitem);
  GtkMenuItem *menu_metadata_widget = GTK_MENU_ITEM(metadata);

  gtk_widget_show_all(metadata);
  dbusmenu_gtkclient_newitem_base (DBUSMENU_GTKCLIENT(client),
                                   newitem, menu_metadata_widget, parent);
  return TRUE;
}

static gboolean
new_title_widget(DbusmenuMenuitem * newitem,
                 DbusmenuMenuitem * parent,
                 DbusmenuClient * client,
                 gpointer user_data)
{
  g_return_val_if_fail(DBUSMENU_IS_MENUITEM(newitem), FALSE);
  g_return_val_if_fail(DBUSMENU_IS_GTKCLIENT(client), FALSE);

  g_debug ("%s (\"%s\")", __func__, dbusmenu_menuitem_property_get(newitem, DBUSMENU_TITLE_MENUITEM_NAME));

  GtkWidget* title = NULL;

  title = title_widget_new (newitem);
  GtkMenuItem *menu_title_widget = GTK_MENU_ITEM(title);
  
  gtk_widget_show_all(title);

  dbusmenu_gtkclient_newitem_base(DBUSMENU_GTKCLIENT(client),
                                  newitem,
                                  menu_title_widget, parent); 
  return TRUE;
}

static gboolean
new_volume_slider_widget(DbusmenuMenuitem * newitem,
                         DbusmenuMenuitem * parent,
                         DbusmenuClient * client,
                         gpointer user_data)
{
  g_debug("indicator-sound: new_volume_slider_widget");

  GtkWidget* volume_widget = NULL;
  IndicatorObject *io = NULL;

  g_return_val_if_fail(DBUSMENU_IS_MENUITEM(newitem), FALSE);
  g_return_val_if_fail(DBUSMENU_IS_GTKCLIENT(client), FALSE);

  io = g_object_get_data (G_OBJECT (client), "indicator");
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(INDICATOR_SOUND (io));

  if (priv->volume_widget != NULL){ 
    volume_widget_tidy_up (priv->volume_widget);
    gtk_widget_destroy (priv->volume_widget);
    priv->volume_widget = NULL;
  }
  volume_widget = volume_widget_new (newitem, io);
  priv->volume_widget = volume_widget;

  GtkWidget* ido_slider_widget = volume_widget_get_ido_slider(VOLUME_WIDGET(priv->volume_widget));

  gtk_widget_show_all(ido_slider_widget);
  // register the style callback on this widget with state manager's style change
  // handler (needs to remake the blocking animation for each style).
  g_signal_connect (ido_slider_widget, "style-set",
                    G_CALLBACK(sound_state_manager_style_changed_cb),
                    priv->state_manager);     

  GtkMenuItem *menu_volume_item = GTK_MENU_ITEM(ido_slider_widget);
  dbusmenu_gtkclient_newitem_base(DBUSMENU_GTKCLIENT(client),
                                  newitem,
                                  menu_volume_item,
                                  parent);
  return TRUE;
}
/**
 * new_voip_slider_widget
 * Create the voip menu item widget, must of the time this widget will be hidden.
 * @param newitem
 * @param parent
 * @param client
 * @param user_data
 * @return
 */
static gboolean
new_voip_slider_widget (DbusmenuMenuitem * newitem,
                        DbusmenuMenuitem * parent,
                        DbusmenuClient * client,
                        gpointer user_data)
{
  g_debug("indicator-sound: new_voip_slider_widget");
  GtkWidget* voip_widget = NULL;
  IndicatorObject *io = NULL;

  g_return_val_if_fail(DBUSMENU_IS_MENUITEM(newitem), FALSE);
  g_return_val_if_fail(DBUSMENU_IS_GTKCLIENT(client), FALSE);

  io = g_object_get_data (G_OBJECT (client), "indicator");
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(INDICATOR_SOUND (io));

  voip_widget = voip_input_widget_new (newitem);
  priv->voip_widget = voip_widget;

  GtkWidget* ido_slider_widget = voip_input_widget_get_ido_slider(VOIP_INPUT_WIDGET(voip_widget));

  gtk_widget_show_all(ido_slider_widget);

  GtkMenuItem *menu_volume_item = GTK_MENU_ITEM(ido_slider_widget);
  dbusmenu_gtkclient_newitem_base(DBUSMENU_GTKCLIENT(client),
                                  newitem,
                                  menu_volume_item,
                                  parent);
  return TRUE;
}

/*******************************************************************/
//UI callbacks
/******************************************************************/

/**
key_press_cb:
**/
static gboolean
key_press_cb(GtkWidget* widget, GdkEventKey* event, gpointer data)
{
  gboolean digested = FALSE;

  g_return_val_if_fail(IS_INDICATOR_SOUND(data), FALSE);

  IndicatorSound *indicator = INDICATOR_SOUND (data);

  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(indicator);
  GtkWidget *menuitem;
  menuitem = GTK_MENU_SHELL (widget)->active_menu_item;

  if (IDO_IS_SCALE_MENU_ITEM(menuitem) == TRUE){
    gdouble current_value = 0;
    gdouble new_value = 0;
    const gdouble five_percent = 5;
    gboolean is_voip_slider = FALSE;

    if (g_ascii_strcasecmp (ido_scale_menu_item_get_primary_label (IDO_SCALE_MENU_ITEM(menuitem)), "VOLUME") == 0) {
      g_debug ("vOLUME SLIDER KEY PRESS");
      GtkWidget* slider_widget = volume_widget_get_ido_slider(VOLUME_WIDGET(priv->volume_widget));
      GtkWidget* slider = ido_scale_menu_item_get_scale((IdoScaleMenuItem*)slider_widget);
      GtkRange* range = (GtkRange*)slider;
      g_return_val_if_fail(GTK_IS_RANGE(range), FALSE);
      current_value = gtk_range_get_value(range);
      new_value = current_value;
    }
    else if (g_ascii_strcasecmp (ido_scale_menu_item_get_primary_label (IDO_SCALE_MENU_ITEM(menuitem)), "VOIP") == 0) {
      g_debug ("VOIP SLIDER KEY PRESS");
      GtkWidget* slider_widget = voip_input_widget_get_ido_slider(VOIP_INPUT_WIDGET(priv->voip_widget));
      GtkWidget* slider = ido_scale_menu_item_get_scale((IdoScaleMenuItem*)slider_widget);
      GtkRange* range = (GtkRange*)slider;
      g_return_val_if_fail(GTK_IS_RANGE(range), FALSE);
      current_value = gtk_range_get_value(range);
      new_value = current_value;
      is_voip_slider = TRUE;
    }

    switch (event->keyval) {
    case GDK_Right:
      digested = TRUE;
      new_value = current_value + five_percent;
      break;
    case GDK_Left:
      digested = TRUE;
      new_value = current_value - five_percent;
      break;
    case GDK_plus:
      digested = TRUE;
      new_value = current_value + five_percent;
      break;
    case GDK_minus:
      digested = TRUE;
      new_value = current_value - five_percent;
      break;
    default:
      break;
    }
    new_value = CLAMP(new_value, 0, 100);
    if (new_value != current_value){
      if (is_voip_slider == TRUE){
        voip_input_widget_update (VOIP_INPUT_WIDGET(priv->voip_widget), new_value);
      }
      else{
        volume_widget_update (VOLUME_WIDGET(priv->volume_widget), new_value, "keypress-update");
      }
    }
  }
  else if (IS_TRANSPORT_WIDGET(menuitem) == TRUE) {
    TransportWidget* transport_widget = NULL;
    GList* elem;

    for ( elem = priv->transport_widgets_list; elem; elem = elem->next ) {
      transport_widget = TRANSPORT_WIDGET ( elem->data );
      if ( transport_widget_is_selected( transport_widget ) ) 
        break;
    }

    switch (event->keyval) {
    case GDK_Right:
      transport_widget_react_to_key_press_event ( transport_widget,
                                                  TRANSPORT_ACTION_NEXT );
      digested = TRUE;         
      break;        
    case GDK_Left:
      transport_widget_react_to_key_press_event ( transport_widget,
                                                  TRANSPORT_ACTION_PREVIOUS );
      digested = TRUE;         
      break;                  
    case GDK_KEY_space:
      transport_widget_react_to_key_press_event ( transport_widget,
                                                  TRANSPORT_ACTION_PLAY_PAUSE );
      digested = TRUE;         
      break;
    case GDK_Up:
    case GDK_Down:
      digested = FALSE;     
      break;
    default:
      break;
    }
  } 
  return digested;
}


/**
key_release_cb:
**/
static gboolean
key_release_cb(GtkWidget* widget, GdkEventKey* event, gpointer data)
{
  gboolean digested = FALSE;

  g_return_val_if_fail(IS_INDICATOR_SOUND(data), FALSE);

  IndicatorSound *indicator = INDICATOR_SOUND (data);

  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(indicator);

  GtkWidget *menuitem;

  menuitem = GTK_MENU_SHELL (widget)->active_menu_item;
  if (IS_TRANSPORT_WIDGET(menuitem) == TRUE) {
    TransportWidget* transport_widget = NULL;
    GList* elem;

    for(elem = priv->transport_widgets_list; elem; elem = elem->next) {
      transport_widget = TRANSPORT_WIDGET (elem->data);
      if ( transport_widget_is_selected( transport_widget ) ) 
        break;
    }

    switch (event->keyval) {
    case GDK_Right:
      transport_widget_react_to_key_release_event ( transport_widget,
                                                    TRANSPORT_ACTION_NEXT );
      digested = TRUE;
      break;        
    case GDK_Left:
      transport_widget_react_to_key_release_event ( transport_widget,
                                                    TRANSPORT_ACTION_PREVIOUS );
      digested = TRUE;         
      break;                  
    case GDK_KEY_space:
      transport_widget_react_to_key_release_event ( transport_widget,
                                                    TRANSPORT_ACTION_PLAY_PAUSE );
      digested = TRUE;         
      break;
    case GDK_Up:
    case GDK_Down:
      digested = FALSE;     
      break;
    default:
      break;
    }
  } 
  return digested;
}

static void
indicator_sound_scroll (IndicatorObject *io, gint delta, 
                        IndicatorScrollDirection direction)
{
  //g_debug("indicator-sound-scroll - current slider value");
  IndicatorSoundPrivate* priv = INDICATOR_SOUND_GET_PRIVATE(INDICATOR_SOUND (io));
  SoundState current_state = sound_state_manager_get_current_state (priv->state_manager);

  if (current_state == UNAVAILABLE || current_state == MUTED)
    return;
  
  GtkWidget* slider_widget = volume_widget_get_ido_slider(VOLUME_WIDGET(priv->volume_widget)); 
  GtkWidget* slider = ido_scale_menu_item_get_scale((IdoScaleMenuItem*)slider_widget);
  GtkRange* range = (GtkRange*)slider;
  g_return_if_fail(GTK_IS_RANGE(range));

  gdouble value = gtk_range_get_value(range);
  GtkAdjustment *adj = gtk_range_get_adjustment (GTK_RANGE (slider));
  //g_debug("indicator-sound-scroll - current slider value %f", value);
  if (direction == INDICATOR_OBJECT_SCROLL_UP) {
    value += adj->step_increment;
  } else {
    value -= adj->step_increment;
  }
  //g_debug("indicator-sound-scroll - update slider with value %f", value);
  volume_widget_update(VOLUME_WIDGET(priv->volume_widget), value, "scroll updates");

  sound_state_manager_show_notification (priv->state_manager, value);
}

void
update_accessible_desc (IndicatorObject * io)
{
  GList *entries = indicator_object_get_entries(io);
  IndicatorObjectEntry * entry = (IndicatorObjectEntry *)entries->data;
  entry->accessible_desc = get_accessible_desc(io);
  g_signal_emit(G_OBJECT(io),
                INDICATOR_OBJECT_SIGNAL_ACCESSIBLE_DESC_UPDATE_ID,
                0,
                entry,
                TRUE);
  g_list_free(entries);
}