aboutsummaryrefslogtreecommitdiff
path: root/libdbusmenu-glib/server.c
blob: ab5951f7a66a6eee31e5848e598b5c535bd12416 (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
/*
A library to communicate a menu object set accross DBus and
track updates and maintain consistency.

Copyright 2009 Canonical Ltd.

Authors:
    Ted Gould <ted@canonical.com>

This program is free software: you can redistribute it and/or modify it 
under the terms of either or both of the following licenses:

1) the GNU Lesser General Public License version 3, as published by the 
Free Software Foundation; and/or
2) the GNU Lesser General Public License version 2.1, 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 applicable version of the GNU Lesser General Public 
License for more details.

You should have received a copy of both the GNU Lesser General Public 
License version 3 and version 2.1 along with this program.  If not, see 
<http://www.gnu.org/licenses/>
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "server.h"
#include "server-marshal.h"

/* DBus Prototypes */
static gboolean _dbusmenu_server_get_property (DbusmenuServer * server, guint id, gchar * property, gchar ** value, GError ** error);
static gboolean _dbusmenu_server_get_properties (DbusmenuServer * server, guint id, GHashTable ** dict, GError ** error);
static gboolean _dbusmenu_server_call (DbusmenuServer * server, guint id, GError ** error);

#include "dbusmenu-server.h"

/* Privates, I'll show you mine... */
typedef struct _DbusmenuServerPrivate DbusmenuServerPrivate;

struct _DbusmenuServerPrivate
{
	DbusmenuMenuitem * root;
	gchar * dbusobject;
};

#define DBUSMENU_SERVER_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), DBUSMENU_TYPE_SERVER, DbusmenuServerPrivate))

/* Signals */
enum {
	ID_PROP_UPDATE,
	ID_UPDATE,
	LAYOUT_UPDATE,
	LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

/* Properties */
enum {
	PROP_0,
	PROP_DBUS_OBJECT,
	PROP_ROOT_NODE,
	PROP_LAYOUT
};

/* Errors */
enum {
	INVALID_MENUITEM_ID,
	INVALID_PROPERTY_NAME,
	UNKNOWN_DBUS_ERROR,
	LAST_ERROR
};

/* Prototype */
static void dbusmenu_server_class_init (DbusmenuServerClass *class);
static void dbusmenu_server_init       (DbusmenuServer *self);
static void dbusmenu_server_dispose    (GObject *object);
static void dbusmenu_server_finalize   (GObject *object);
static void set_property (GObject * obj, guint id, const GValue * value, GParamSpec * pspec);
static void get_property (GObject * obj, guint id, GValue * value, GParamSpec * pspec);
static void menuitem_property_changed (DbusmenuMenuitem * mi, gchar * property, gchar * value, DbusmenuServer * server);
static void menuitem_child_added (DbusmenuMenuitem * parent, DbusmenuMenuitem * child, guint pos, DbusmenuServer * server);
static void menuitem_child_removed (DbusmenuMenuitem * parent, DbusmenuMenuitem * child, DbusmenuServer * server);
static void menuitem_signals_create (DbusmenuMenuitem * mi, gpointer data);
static void menuitem_signals_remove (DbusmenuMenuitem * mi, gpointer data);
static GQuark error_quark (void);

G_DEFINE_TYPE (DbusmenuServer, dbusmenu_server, G_TYPE_OBJECT);

static void
dbusmenu_server_class_init (DbusmenuServerClass *class)
{
	GObjectClass *object_class = G_OBJECT_CLASS (class);

	g_type_class_add_private (class, sizeof (DbusmenuServerPrivate));

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

	/**
		DbusmenuServer::id-prop-update:
		@arg0: The #DbusmenuServer emitting the signal.
		@arg1: The ID of the #DbusmenuMenuitem changing a property.
		@arg2: The property being changed.
		@arg3: The value of the property being changed.

		This signal is emitted when a menuitem updates or
		adds a property.
	*/
	signals[ID_PROP_UPDATE] =   g_signal_new(DBUSMENU_SERVER_SIGNAL_ID_PROP_UPDATE,
	                                         G_TYPE_FROM_CLASS(class),
	                                         G_SIGNAL_RUN_LAST,
	                                         G_STRUCT_OFFSET(DbusmenuServerClass, id_prop_update),
	                                         NULL, NULL,
	                                         _dbusmenu_server_marshal_VOID__UINT_STRING_STRING,
	                                         G_TYPE_NONE, 3, G_TYPE_UINT, G_TYPE_STRING, G_TYPE_STRING);
	/**
		DbusmenuServer::id-update:
		@arg0: The #DbusmenuServer emitting the signal.
		@arg1: ID of the #DbusmenuMenuitem changing.

		The purpose of this signal is to show major change in
		a menuitem to the point that #DbusmenuServer::id-prop-update
		seems a little insubstantive.
	*/
	signals[ID_UPDATE] =        g_signal_new(DBUSMENU_SERVER_SIGNAL_ID_UPDATE,
	                                         G_TYPE_FROM_CLASS(class),
	                                         G_SIGNAL_RUN_LAST,
	                                         G_STRUCT_OFFSET(DbusmenuServerClass, id_update),
	                                         NULL, NULL,
	                                         g_cclosure_marshal_VOID__UINT,
	                                         G_TYPE_NONE, 1, G_TYPE_UINT);
	/**
		DbusmenuServer::layout-update:
		@arg0: The #DbusmenuServer emitting the signal.

		This signal is emitted any time the layout of the
		menuitems under this server is changed.
	*/
	signals[LAYOUT_UPDATE] =    g_signal_new(DBUSMENU_SERVER_SIGNAL_LAYOUT_UPDATE,
	                                         G_TYPE_FROM_CLASS(class),
	                                         G_SIGNAL_RUN_LAST,
	                                         G_STRUCT_OFFSET(DbusmenuServerClass, layout_update),
	                                         NULL, NULL,
	                                         g_cclosure_marshal_VOID__VOID,
	                                         G_TYPE_NONE, 0);


	g_object_class_install_property (object_class, PROP_DBUS_OBJECT,
	                                 g_param_spec_string(DBUSMENU_SERVER_PROP_DBUS_OBJECT, "DBus object path",
	                                              "The object that represents this set of menus on DBus",
	                                              "/org/freedesktop/dbusmenu",
	                                              G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
	g_object_class_install_property (object_class, PROP_ROOT_NODE,
	                                 g_param_spec_object(DBUSMENU_SERVER_PROP_ROOT_NODE, "Root menu node",
	                                              "The base object of the menus that are served",
	                                              DBUSMENU_TYPE_MENUITEM,
	                                              G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
	g_object_class_install_property (object_class, PROP_LAYOUT,
	                                 g_param_spec_string(DBUSMENU_SERVER_PROP_LAYOUT, "XML Layout of the menus",
	                                              "A simple XML string that describes the layout of the menus",
	                                              "<menu />",
	                                              G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));

	dbus_g_object_type_install_info(DBUSMENU_TYPE_SERVER, &dbus_glib__dbusmenu_server_object_info);

	return;
}

static void
dbusmenu_server_init (DbusmenuServer *self)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(self);

	priv->root = NULL;
	priv->dbusobject = NULL;

	return;
}

static void
dbusmenu_server_dispose (GObject *object)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(object);

	if (priv->root != NULL) {
		dbusmenu_menuitem_foreach(priv->root, menuitem_signals_remove, object);
		g_object_unref(priv->root);
	}

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

static void
dbusmenu_server_finalize (GObject *object)
{
	G_OBJECT_CLASS (dbusmenu_server_parent_class)->finalize (object);
	return;
}

static void
set_property (GObject * obj, guint id, const GValue * value, GParamSpec * pspec)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(obj);

	switch (id) {
	case PROP_DBUS_OBJECT:
		g_return_if_fail(priv->dbusobject == NULL);
		priv->dbusobject = g_value_dup_string(value);
		DBusGConnection * connection = dbus_g_bus_get(DBUS_BUS_SESSION, NULL);
		dbus_g_connection_register_g_object(connection,
											priv->dbusobject,
											obj);
		break;
	case PROP_ROOT_NODE:
		if (priv->root != NULL) {
			dbusmenu_menuitem_foreach(priv->root, menuitem_signals_remove, obj);
			g_object_unref(G_OBJECT(priv->root));
			priv->root = NULL;
		}
		priv->root = DBUSMENU_MENUITEM(g_value_get_object(value));
		if (priv->root != NULL) {
			g_object_ref(G_OBJECT(priv->root));
			dbusmenu_menuitem_foreach(priv->root, menuitem_signals_create, obj);
		} else {
			g_debug("Setting root node to NULL");
		}
		g_signal_emit(obj, signals[LAYOUT_UPDATE], 0, TRUE);
		break;
	case PROP_LAYOUT:
		/* Can't set this, fall through to error */
		g_warning("Can not set property: layout");
	default:
		g_return_if_reached();
		break;
	}

	return;
}

static void
xmlarray_foreach_free (gpointer arrayentry, gpointer userdata)
{
	if (arrayentry != NULL) {
		/* g_debug("Freeing pointer: %s", (gchar *)arrayentry); */
		g_free(arrayentry);
	}

	return;
}

static void
get_property (GObject * obj, guint id, GValue * value, GParamSpec * pspec)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(obj);

	switch (id) {
	case PROP_DBUS_OBJECT:
		g_value_set_string(value, priv->dbusobject);
		break;
	case PROP_ROOT_NODE:
		g_value_set_object(value, priv->root);
		break;
	case PROP_LAYOUT: {
		GPtrArray * xmlarray = g_ptr_array_new();
		if (priv->root == NULL) {
			/* g_debug("Getting layout without root node!"); */
			g_ptr_array_add(xmlarray, g_strdup("<menu />"));
		} else {
			dbusmenu_menuitem_buildxml(priv->root, xmlarray);
		}
		g_ptr_array_add(xmlarray, NULL);

		/* build string */
		gchar * finalstring = g_strjoinv("", (gchar **)xmlarray->pdata);
		g_value_take_string(value, finalstring);
		/* g_debug("Final string: %s", finalstring); */

		g_ptr_array_foreach(xmlarray, xmlarray_foreach_free, NULL);
		g_ptr_array_free(xmlarray, TRUE);
		break;
	}
	default:
		g_return_if_reached();
		break;
	}

	return;
}

static void 
menuitem_property_changed (DbusmenuMenuitem * mi, gchar * property, gchar * value, DbusmenuServer * server)
{
	g_signal_emit(G_OBJECT(server), signals[ID_PROP_UPDATE], 0, dbusmenu_menuitem_get_id(mi), property, value, TRUE);
	return;
}

static void
menuitem_child_added (DbusmenuMenuitem * parent, DbusmenuMenuitem * child, guint pos, DbusmenuServer * server)
{
	menuitem_signals_create(child, server);
	/* TODO: We probably need to group the layout update signals to make the number more reasonble. */
	g_signal_emit(G_OBJECT(server), signals[LAYOUT_UPDATE], 0, TRUE);
	return;
}

static void 
menuitem_child_removed (DbusmenuMenuitem * parent, DbusmenuMenuitem * child, DbusmenuServer * server)
{
	menuitem_signals_remove(child, server);
	/* TODO: We probably need to group the layout update signals to make the number more reasonble. */
	g_signal_emit(G_OBJECT(server), signals[LAYOUT_UPDATE], 0, TRUE);
	return;
}

/* Connects all the signals that we're interested in
   coming from a menuitem */
static void
menuitem_signals_create (DbusmenuMenuitem * mi, gpointer data)
{
	g_signal_connect(G_OBJECT(mi), DBUSMENU_MENUITEM_SIGNAL_CHILD_ADDED, G_CALLBACK(menuitem_child_added), data);
	g_signal_connect(G_OBJECT(mi), DBUSMENU_MENUITEM_SIGNAL_CHILD_REMOVED, G_CALLBACK(menuitem_child_removed), data);
	g_signal_connect(G_OBJECT(mi), DBUSMENU_MENUITEM_SIGNAL_PROPERTY_CHANGED, G_CALLBACK(menuitem_property_changed), data);
	return;
}

/* Removes all the signals that we're interested in
   coming from a menuitem */
static void
menuitem_signals_remove (DbusmenuMenuitem * mi, gpointer data)
{
	g_signal_handlers_disconnect_by_func(G_OBJECT(mi), G_CALLBACK(menuitem_child_added), data);
	g_signal_handlers_disconnect_by_func(G_OBJECT(mi), G_CALLBACK(menuitem_child_removed), data);
	g_signal_handlers_disconnect_by_func(G_OBJECT(mi), G_CALLBACK(menuitem_property_changed), data);
	return;
}

static GQuark
error_quark (void)
{
	static GQuark quark = 0;
	if (quark == 0) {
		quark = g_quark_from_static_string (G_LOG_DOMAIN);
	}
	return quark;
}

/* DBus interface */
static gboolean 
_dbusmenu_server_get_property (DbusmenuServer * server, guint id, gchar * property, gchar ** value, GError ** error)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(server);
	DbusmenuMenuitem * mi = dbusmenu_menuitem_find_id(priv->root, id);

	if (mi == NULL) {
		if (error != NULL) {
			g_set_error(error,
			            error_quark(),
			            INVALID_MENUITEM_ID,
			            "The ID supplied %d does not refer to a menu item we have",
			            id);
		}
		return FALSE;
	}

	const gchar * prop = dbusmenu_menuitem_property_get(mi, property);
	if (prop == NULL) {
		if (error != NULL) {
			g_set_error(error,
			            error_quark(),
			            INVALID_PROPERTY_NAME,
			            "The property '%s' does not exist on menuitem with ID of %d",
			            property,
			            id);
		}
		return FALSE;
	}

	if (value == NULL) {
		if (error != NULL) {
			g_set_error(error,
			            error_quark(),
			            UNKNOWN_DBUS_ERROR,
			            "Uhm, yeah.  We didn't get anywhere to put the value, that's really weird.  Seems impossible really.");
		}
		return FALSE;
	}

	*value = g_strdup(prop);

	return TRUE;
}

static gboolean
_dbusmenu_server_get_properties (DbusmenuServer * server, guint id, GHashTable ** dict, GError ** error)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(server);
	DbusmenuMenuitem * mi = dbusmenu_menuitem_find_id(priv->root, id);

	if (mi == NULL) {
		if (error != NULL) {
			g_set_error(error,
			            error_quark(),
			            INVALID_MENUITEM_ID,
			            "The ID supplied %d does not refer to a menu item we have",
			            id);
		}
		return FALSE;
	}

	*dict = dbusmenu_menuitem_properties_copy(mi);

	return TRUE;
}

static gboolean
_dbusmenu_server_call (DbusmenuServer * server, guint id, GError ** error)
{
	DbusmenuServerPrivate * priv = DBUSMENU_SERVER_GET_PRIVATE(server);
	DbusmenuMenuitem * mi = dbusmenu_menuitem_find_id(priv->root, id);

	if (mi == NULL) {
		if (error != NULL) {
			g_set_error(error,
			            error_quark(),
			            INVALID_MENUITEM_ID,
			            "The ID supplied %d does not refer to a menu item we have",
			            id);
		}
		return FALSE;
	}

	dbusmenu_menuitem_activate(mi);
	return TRUE;
}

/* Public Interface */
/**
	dbusmenu_server_new:
	@object: The object name to show for this menu structure
		on DBus.  May be NULL.

	Creates a new #DbusmenuServer object with a specific object
	path on DBus.  If @object is set to NULL the default object
	name of "/org/freedesktop/dbusmenu" will be used.

	Return value: A brand new #DbusmenuServer
*/
DbusmenuServer *
dbusmenu_server_new (const gchar * object)
{
	if (object == NULL) {
		object = "/org/freedesktop/dbusmenu";
	}

	DbusmenuServer * self = g_object_new(DBUSMENU_TYPE_SERVER,
	                                     DBUSMENU_SERVER_PROP_DBUS_OBJECT, object,
	                                     NULL);

	return self;
}

/**
	dbusmenu_server_set_root:
	@self: The #DbusmenuServer object to set the root on
	@root: The new root #DbusmenuMenuitem tree

	This function contains all of the #GValue wrapping
	required to set the property #DbusmenuServer:root-node
	on the server @self.
*/
void
dbusmenu_server_set_root (DbusmenuServer * self, DbusmenuMenuitem * root)
{
	g_return_if_fail(DBUSMENU_IS_SERVER(self));
	g_return_if_fail(DBUSMENU_IS_MENUITEM(root));

	/* g_debug("Setting root object: 0x%X", (unsigned int)root); */
	GValue rootvalue = {0};
	g_value_init(&rootvalue, G_TYPE_OBJECT);
	g_value_set_object(&rootvalue, root);
	g_object_set_property(G_OBJECT(self), DBUSMENU_SERVER_PROP_ROOT_NODE, &rootvalue);
	g_object_unref(G_OBJECT(root));
	return;
}