mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-12-25 15:06:14 +01:00
Add an example of exporting a GObject
This is more manual work than dbus-glib.
This commit is contained in:
Matthias Clasen
parent
ea1e0496b0
commit
9a065edf6f
@ -156,6 +156,8 @@
|
||||
* <example id="gdbus-subtree-server"><title>D-Bus subtree example</title><programlisting><xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gdbus-example-subtree.c"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include></programlisting></example>
|
||||
*
|
||||
* <example id="gdbus-unix-fd-client"><title>D-Bus UNIX File Descriptor example</title><programlisting><xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gdbus-example-unix-fd-client.c"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include></programlisting></example>
|
||||
*
|
||||
* <example id="gdbus-export"><title>Exporting a GObject</title><programlisting><xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gdbus-example-export.c"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include></programlisting></example>
|
||||
*/
|
||||
|
||||
/* ---------------------------------------------------------------------------------------------------- */
|
||||
|
||||
@ -58,6 +58,7 @@ SAMPLE_PROGS = \
|
||||
httpd \
|
||||
send-data \
|
||||
filter-cat \
|
||||
gdbus-example-export \
|
||||
gdbus-example-own-name \
|
||||
gdbus-example-watch-name \
|
||||
gdbus-example-watch-proxy \
|
||||
@ -234,6 +235,9 @@ gdbus_example_peer_LDADD = $(progs_ldadd)
|
||||
gdbus_example_proxy_subclass_SOURCES = gdbus-example-proxy-subclass.c
|
||||
gdbus_example_proxy_subclass_LDADD = $(progs_ldadd)
|
||||
|
||||
gdbus_example_export_SOURCES = gdbus-example-export.c
|
||||
gdbus_example_export_LDADD = $(progs_ldadd)
|
||||
|
||||
EXTRA_DIST += \
|
||||
socket-common.c \
|
||||
org.gtk.test.gschema \
|
||||
|
||||
331
gio/tests/gdbus-example-export.c
Normal file
331
gio/tests/gdbus-example-export.c
Normal file
@ -0,0 +1,331 @@
|
||||
#include <gio/gio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
* ---------------------------------------------------------------------------------------------------- */
|
||||
|
||||
/* The object we want to export */
|
||||
typedef struct _MyObjectClass MyObjectClass;
|
||||
typedef struct _MyObject MyObject;
|
||||
|
||||
struct _MyObjectClass
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
};
|
||||
|
||||
struct _MyObject
|
||||
{
|
||||
GObject parent_instance;
|
||||
|
||||
gint count;
|
||||
gchar *name;
|
||||
};
|
||||
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
PROP_COUNT,
|
||||
PROP_NAME
|
||||
};
|
||||
|
||||
G_DEFINE_TYPE (MyObject, my_object, G_TYPE_OBJECT);
|
||||
|
||||
static void
|
||||
my_object_finalize (GObject *object)
|
||||
{
|
||||
MyObject *myobj = (MyObject*)object;
|
||||
|
||||
g_free (myobj->name);
|
||||
|
||||
G_OBJECT_CLASS (my_object_parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static void
|
||||
my_object_init (MyObject *object)
|
||||
{
|
||||
object->count = 0;
|
||||
object->name = NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
my_object_get_property (GObject *object,
|
||||
guint prop_id,
|
||||
GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
MyObject *myobj = (MyObject*)object;
|
||||
|
||||
switch (prop_id)
|
||||
{
|
||||
case PROP_COUNT:
|
||||
g_value_set_int (value, myobj->count);
|
||||
break;
|
||||
|
||||
case PROP_NAME:
|
||||
g_value_set_string (value, myobj->name);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
my_object_set_property (GObject *object,
|
||||
guint prop_id,
|
||||
const GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
MyObject *myobj = (MyObject*)object;
|
||||
|
||||
switch (prop_id)
|
||||
{
|
||||
case PROP_COUNT:
|
||||
myobj->count = g_value_get_int (value);
|
||||
break;
|
||||
|
||||
case PROP_NAME:
|
||||
g_free (myobj->name);
|
||||
myobj->name = g_value_dup_string (value);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
my_object_class_init (MyObjectClass *class)
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
|
||||
|
||||
gobject_class->finalize = my_object_finalize;
|
||||
gobject_class->set_property = my_object_set_property;
|
||||
gobject_class->get_property = my_object_get_property;
|
||||
|
||||
g_object_class_install_property (gobject_class,
|
||||
PROP_COUNT,
|
||||
g_param_spec_int ("count",
|
||||
"Count",
|
||||
"Count",
|
||||
0, 99999, 0,
|
||||
G_PARAM_READWRITE));
|
||||
|
||||
g_object_class_install_property (gobject_class,
|
||||
PROP_NAME,
|
||||
g_param_spec_string ("name",
|
||||
"Name",
|
||||
"Name",
|
||||
NULL,
|
||||
G_PARAM_READWRITE));
|
||||
}
|
||||
|
||||
/* A method that we want to export */
|
||||
void
|
||||
my_object_change_count (MyObject *myobj,
|
||||
gint change)
|
||||
{
|
||||
myobj->count = 2 * myobj->count + change;
|
||||
|
||||
g_object_notify (G_OBJECT (myobj), "count");
|
||||
}
|
||||
|
||||
static GDBusNodeInfo *introspection_data = NULL;
|
||||
|
||||
/* Introspection data for the service we are exporting */
|
||||
static const gchar introspection_xml[] =
|
||||
"<node>"
|
||||
" <interface name='org.myorg.MyObject'>"
|
||||
" <method name='ChangeCount'>"
|
||||
" <arg type='i' name='change' direction='in'/>"
|
||||
" </method>"
|
||||
" <property type='i' name='Count' access='read'/>"
|
||||
" <property type='s' name='Name' access='readwrite'/>"
|
||||
" </interface>"
|
||||
"</node>";
|
||||
|
||||
|
||||
static void
|
||||
handle_method_call (GDBusConnection *connection,
|
||||
const gchar *sender,
|
||||
const gchar *object_path,
|
||||
const gchar *interface_name,
|
||||
const gchar *method_name,
|
||||
GVariant *parameters,
|
||||
GDBusMethodInvocation *invocation,
|
||||
gpointer user_data)
|
||||
{
|
||||
MyObject *myobj = user_data;
|
||||
|
||||
if (g_strcmp0 (method_name, "ChangeCount") == 0)
|
||||
{
|
||||
gint change;
|
||||
g_variant_get (parameters, "(i)", &change);
|
||||
|
||||
my_object_change_count (myobj, change);
|
||||
|
||||
g_dbus_method_invocation_return_value (invocation, NULL);
|
||||
}
|
||||
}
|
||||
|
||||
static GVariant *
|
||||
handle_get_property (GDBusConnection *connection,
|
||||
const gchar *sender,
|
||||
const gchar *object_path,
|
||||
const gchar *interface_name,
|
||||
const gchar *property_name,
|
||||
GError **error,
|
||||
gpointer user_data)
|
||||
{
|
||||
GVariant *ret;
|
||||
MyObject *myobj = user_data;
|
||||
|
||||
ret = NULL;
|
||||
if (g_strcmp0 (property_name, "Count") == 0)
|
||||
{
|
||||
ret = g_variant_new_int32 (myobj->count);
|
||||
}
|
||||
else if (g_strcmp0 (property_name, "Name") == 0)
|
||||
{
|
||||
ret = g_variant_new_string (myobj->name ? myobj->name : "");
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
handle_set_property (GDBusConnection *connection,
|
||||
const gchar *sender,
|
||||
const gchar *object_path,
|
||||
const gchar *interface_name,
|
||||
const gchar *property_name,
|
||||
GVariant *value,
|
||||
GError **error,
|
||||
gpointer user_data)
|
||||
{
|
||||
MyObject *myobj = user_data;
|
||||
|
||||
if (g_strcmp0 (property_name, "Count") == 0)
|
||||
{
|
||||
g_object_set (myobj, "count", g_variant_get_int32 (value), NULL);
|
||||
}
|
||||
else if (g_strcmp0 (property_name, "Name") == 0)
|
||||
{
|
||||
g_object_set (myobj, "name", g_variant_get_string (value, NULL), NULL);
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
/* for now */
|
||||
static const GDBusInterfaceVTable interface_vtable =
|
||||
{
|
||||
handle_method_call,
|
||||
handle_get_property,
|
||||
handle_set_property
|
||||
};
|
||||
|
||||
static void
|
||||
send_property_change (GObject *obj,
|
||||
GParamSpec *pspec,
|
||||
GDBusConnection *connection)
|
||||
{
|
||||
GVariantBuilder *builder;
|
||||
MyObject *myobj = (MyObject *)obj;
|
||||
|
||||
builder = g_variant_builder_new (G_VARIANT_TYPE_ARRAY);
|
||||
|
||||
if (g_strcmp0 (pspec->name, "count") == 0)
|
||||
g_variant_builder_add (builder,
|
||||
"{sv}",
|
||||
"Count", g_variant_new_int32 (myobj->count));
|
||||
else if (g_strcmp0 (pspec->name, "name") == 0)
|
||||
g_variant_builder_add (builder,
|
||||
"{sv}",
|
||||
"Name", g_variant_new_string (myobj->name ? myobj->name : ""));
|
||||
|
||||
g_dbus_connection_emit_signal (connection,
|
||||
NULL,
|
||||
"/org/myorg/MyObject",
|
||||
"org.myorg.MyObject",
|
||||
"PropertiesChanged",
|
||||
g_variant_new ("(sa{sv})",
|
||||
"org.myorg.MyObject",
|
||||
builder),
|
||||
NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
on_bus_acquired (GDBusConnection *connection,
|
||||
const gchar *name,
|
||||
gpointer user_data)
|
||||
{
|
||||
MyObject *myobj = user_data;
|
||||
guint registration_id;
|
||||
|
||||
g_signal_connect (myobj, "notify",
|
||||
G_CALLBACK (send_property_change), connection);
|
||||
registration_id = g_dbus_connection_register_object (connection,
|
||||
"/org/myorg/MyObject",
|
||||
"org.myorg.MyObject",
|
||||
introspection_data->interfaces[0],
|
||||
&interface_vtable,
|
||||
myobj,
|
||||
NULL, /* user_data_free_func */
|
||||
NULL); /* GError** */
|
||||
g_assert (registration_id > 0);
|
||||
}
|
||||
|
||||
static void
|
||||
on_name_acquired (GDBusConnection *connection,
|
||||
const gchar *name,
|
||||
gpointer user_data)
|
||||
{
|
||||
}
|
||||
|
||||
static void
|
||||
on_name_lost (GDBusConnection *connection,
|
||||
const gchar *name,
|
||||
gpointer user_data)
|
||||
{
|
||||
exit (1);
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char *argv[])
|
||||
{
|
||||
guint owner_id;
|
||||
GMainLoop *loop;
|
||||
MyObject *myobj;
|
||||
|
||||
g_type_init ();
|
||||
|
||||
/* We are lazy here - we don't want to manually provide
|
||||
* the introspection data structures - so we just build
|
||||
* them from XML.
|
||||
*/
|
||||
introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
|
||||
g_assert (introspection_data != NULL);
|
||||
|
||||
myobj = g_object_new (my_object_get_type (), NULL);
|
||||
|
||||
owner_id = g_bus_own_name (G_BUS_TYPE_SESSION,
|
||||
"org.myorg.MyObject",
|
||||
G_BUS_NAME_OWNER_FLAGS_NONE,
|
||||
on_bus_acquired,
|
||||
on_name_acquired,
|
||||
on_name_lost,
|
||||
myobj,
|
||||
NULL);
|
||||
|
||||
loop = g_main_loop_new (NULL, FALSE);
|
||||
g_main_loop_run (loop);
|
||||
|
||||
g_bus_unown_name (owner_id);
|
||||
|
||||
g_dbus_node_info_unref (introspection_data);
|
||||
|
||||
g_object_unref (myobj);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user