/*
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 <libxml/parser.h>
#include <libxml/tree.h>
#include "client.h"
#include "dbusmenu-client.h"
#include "server-marshal.h"
/* Properties */
enum {
PROP_0,
PROP_DBUSOBJECT,
PROP_DBUSNAME
};
/* Signals */
enum {
LAYOUT_UPDATED,
ROOT_CHANGED,
NEW_MENUITEM,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
typedef struct _DbusmenuClientPrivate DbusmenuClientPrivate;
struct _DbusmenuClientPrivate
{
DbusmenuMenuitem * root;
gchar * dbus_object;
gchar * dbus_name;
DBusGConnection * session_bus;
DBusGProxy * menuproxy;
DBusGProxy * propproxy;
DBusGProxyCall * layoutcall;
gint current_revision;
gint my_revision;
DBusGProxy * dbusproxy;
GHashTable * type_handlers;
};
typedef struct _newItemPropData newItemPropData;
struct _newItemPropData
{
DbusmenuClient * client;
DbusmenuMenuitem * item;
DbusmenuMenuitem * parent;
};
#define DBUSMENU_CLIENT_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), DBUSMENU_TYPE_CLIENT, DbusmenuClientPrivate))
/* GObject Stuff */
static void dbusmenu_client_class_init (DbusmenuClientClass *klass);
static void dbusmenu_client_init (DbusmenuClient *self);
static void dbusmenu_client_dispose (GObject *object);
static void dbusmenu_client_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);
/* Private Funcs */
static void layout_update (DBusGProxy * proxy, gint revision, DbusmenuClient * client);
static void id_prop_update (DBusGProxy * proxy, guint id, gchar * property, gchar * value, DbusmenuClient * client);
static void id_update (DBusGProxy * proxy, guint id, DbusmenuClient * client);
static void build_proxies (DbusmenuClient * client);
static guint parse_node_get_id (xmlNodePtr node);
static DbusmenuMenuitem * parse_layout_xml(DbusmenuClient * client, xmlNodePtr node, DbusmenuMenuitem * item, DbusmenuMenuitem * parent, DBusGProxy * proxy);
static gint parse_layout (DbusmenuClient * client, const gchar * layout);
static void update_layout_cb (DBusGProxy * proxy, DBusGProxyCall * call, void * data);
static void update_layout (DbusmenuClient * client);
static void menuitem_get_properties_cb (DBusGProxy * proxy, GHashTable * properties, GError * error, gpointer data);
/* Build a type */
G_DEFINE_TYPE (DbusmenuClient, dbusmenu_client, G_TYPE_OBJECT);
static void
dbusmenu_client_class_init (DbusmenuClientClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (DbusmenuClientPrivate));
object_class->dispose = dbusmenu_client_dispose;
object_class->finalize = dbusmenu_client_finalize;
object_class->set_property = set_property;
object_class->get_property = get_property;
/**
DbusmenuClient::layout-update:
@arg0: The #DbusmenuClient object
Tells that the layout has been updated and parsed by
this object and is ready for grabbing by the calling
application.
*/
signals[LAYOUT_UPDATED] = g_signal_new(DBUSMENU_CLIENT_SIGNAL_LAYOUT_UPDATED,
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (DbusmenuClientClass, layout_updated),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0, G_TYPE_NONE);
/**
DbusmenuClient::root-changed:
@arg0: The #DbusmenuClient object
@arg1: The new root #DbusmenuMenuitem
The layout has changed in a way that can not be
represented by the individual items changing as the
root of this client has changed.
*/
signals[ROOT_CHANGED] = g_signal_new(DBUSMENU_CLIENT_SIGNAL_ROOT_CHANGED,
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (DbusmenuClientClass, root_changed),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, G_TYPE_OBJECT);
/**
DbusmenuClient::new-menuitem:
@arg0: The #DbusmenuClient object
@arg1: The new #DbusmenuMenuitem created
Signaled when the client creates a new menuitem. This
doesn't mean that it's placed anywhere. The parent that
it's applied to will signal #DbusmenuMenuitem::child-added
when it gets parented.
*/
signals[NEW_MENUITEM] = g_signal_new(DBUSMENU_CLIENT_SIGNAL_NEW_MENUITEM,
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (DbusmenuClientClass, new_menuitem),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, G_TYPE_OBJECT);
g_object_class_install_property (object_class, PROP_DBUSOBJECT,
g_param_spec_string(DBUSMENU_CLIENT_PROP_DBUS_OBJECT, "DBus Object we represent",
"The Object on the client that we're getting our data from.",
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_DBUSNAME,
g_param_spec_string(DBUSMENU_CLIENT_PROP_DBUS_NAME, "DBus Client we connect to",
"Name of the DBus client we're connecting to.",
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
return;
}
static void
dbusmenu_client_init (DbusmenuClient *self)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(self);
priv->root = NULL;
priv->dbus_object = NULL;
priv->dbus_name = NULL;
priv->session_bus = NULL;
priv->menuproxy = NULL;
priv->propproxy = NULL;
priv->layoutcall = NULL;
priv->current_revision = 0;
priv->my_revision = 0;
priv->dbusproxy = NULL;
priv->type_handlers = g_hash_table_new_full(g_str_hash, g_str_equal,
g_free, NULL);
return;
}
static void
dbusmenu_client_dispose (GObject *object)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(object);
if (priv->layoutcall != NULL) {
dbus_g_proxy_cancel_call(priv->propproxy, priv->layoutcall);
priv->layoutcall = NULL;
}
if (priv->menuproxy != NULL) {
g_object_unref(G_OBJECT(priv->menuproxy));
priv->menuproxy = NULL;
}
if (priv->propproxy != NULL) {
g_object_unref(G_OBJECT(priv->propproxy));
priv->propproxy = NULL;
}
if (priv->dbusproxy != NULL) {
g_object_unref(G_OBJECT(priv->dbusproxy));
priv->dbusproxy = NULL;
}
priv->session_bus = NULL;
if (priv->root != NULL) {
g_object_unref(G_OBJECT(priv->root));
priv->root = NULL;
}
G_OBJECT_CLASS (dbusmenu_client_parent_class)->dispose (object);
return;
}
static void
dbusmenu_client_finalize (GObject *object)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(object);
g_free(priv->dbus_name);
g_free(priv->dbus_object);
if (priv->type_handlers != NULL) {
g_hash_table_destroy(priv->type_handlers);
}
G_OBJECT_CLASS (dbusmenu_client_parent_class)->finalize (object);
return;
}
static void
set_property (GObject * obj, guint id, const GValue * value, GParamSpec * pspec)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(obj);
switch (id) {
case PROP_DBUSNAME:
priv->dbus_name = g_value_dup_string(value);
if (priv->dbus_name != NULL && priv->dbus_object != NULL) {
build_proxies(DBUSMENU_CLIENT(obj));
}
break;
case PROP_DBUSOBJECT:
priv->dbus_object = g_value_dup_string(value);
if (priv->dbus_name != NULL && priv->dbus_object != NULL) {
build_proxies(DBUSMENU_CLIENT(obj));
}
break;
default:
g_warning("Unknown property %d.", id);
return;
}
return;
}
static void
get_property (GObject * obj, guint id, GValue * value, GParamSpec * pspec)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(obj);
switch (id) {
case PROP_DBUSNAME:
g_value_set_string(value, priv->dbus_name);
break;
case PROP_DBUSOBJECT:
g_value_set_string(value, priv->dbus_object);
break;
default:
g_warning("Unknown property %d.", id);
return;
}
return;
}
/* Internal funcs */
/* Annoying little wrapper to make the right function update */
static void
layout_update (DBusGProxy * proxy, gint revision, DbusmenuClient * client)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
priv->current_revision = revision;
if (priv->current_revision > priv->my_revision) {
update_layout(client);
}
return;
}
/* Signal from the server that a property has changed
on one of our menuitems */
static void
id_prop_update (DBusGProxy * proxy, guint id, gchar * property, gchar * value, DbusmenuClient * client)
{
#ifdef MASSIVEDEBUGGING
g_debug("Property change sent to client for item %d property %s value %s", id, property, g_utf8_strlen(value, 50) < 25 ? value : "<too long>");
#endif
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
g_return_if_fail(priv->root != NULL);
DbusmenuMenuitem * menuitem = dbusmenu_menuitem_find_id(priv->root, id);
g_return_if_fail(menuitem != NULL);
dbusmenu_menuitem_property_set(menuitem, property, value);
return;
}
/* Oh, lots of updates now. That silly server, they want
to change all kinds of stuff! */
static void
id_update (DBusGProxy * proxy, guint id, DbusmenuClient * client)
{
#ifdef MASSIVEDEBUGGING
g_debug("Client side ID update: %d", id);
#endif
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
g_return_if_fail(priv->root != NULL);
DbusmenuMenuitem * menuitem = dbusmenu_menuitem_find_id(priv->root, id);
g_return_if_fail(menuitem != NULL);
org_ayatana_dbusmenu_get_properties_async(proxy, id, menuitem_get_properties_cb, menuitem);
return;
}
/* Watches to see if our DBus savior comes onto the bus */
static void
dbus_owner_change (DBusGProxy * proxy, const gchar * name, const gchar * prev, const gchar * new, DbusmenuClient * client)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
if (!(new != NULL && prev == NULL)) {
/* If it's not someone new getting on the bus, sorry we
simply just don't care. It's not that your service isn't
important to someone, just not us. You'll find the right
process someday, there's lots of processes out there. */
return;
}
if (g_strcmp0(new, priv->dbus_name)) {
/* Again, someone else's service. */
return;
}
/* Woot! A service for us to love and to hold for ever
and ever and ever! */
return build_proxies(client);
}
/* This function builds the DBus proxy which will look out for
the service coming up. */
static void
build_dbus_proxy (DbusmenuClient * client)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
GError * error = NULL;
if (priv->dbusproxy != NULL) {
return;
}
priv->dbusproxy = dbus_g_proxy_new_for_name_owner (priv->session_bus,
DBUS_SERVICE_DBUS,
DBUS_PATH_DBUS,
DBUS_INTERFACE_DBUS,
&error);
if (error != NULL) {
g_debug("Oh, that's bad. That's really bad. We can't get a proxy to DBus itself? Seriously? Here's all I know: %s", error->message);
g_error_free(error);
return;
}
dbus_g_proxy_add_signal(priv->dbusproxy, "NameOwnerChanged",
G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING,
G_TYPE_INVALID);
dbus_g_proxy_connect_signal(priv->dbusproxy, "NameOwnerChanged",
G_CALLBACK(dbus_owner_change), client, NULL);
return;
}
/* A signal handler that gets called when a proxy is destoryed a
so it needs to clean up a little. Make sure we don't think we
have a layout and setup the dbus watcher. */
static void
proxy_destroyed (GObject * gobj_proxy, gpointer userdata)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(userdata);
if (priv->root != NULL) {
g_object_unref(G_OBJECT(priv->root));
priv->root = NULL;
#ifdef MASSIVEDEBUGGING
g_debug("Proxies destroyed, signaling a root change and a layout update.");
#endif
g_signal_emit(G_OBJECT(userdata), signals[ROOT_CHANGED], 0, NULL, TRUE);
g_signal_emit(G_OBJECT(userdata), signals[LAYOUT_UPDATED], 0, TRUE);
}
if ((gpointer)priv->menuproxy == (gpointer)gobj_proxy) {
priv->layoutcall = NULL;
}
build_dbus_proxy(DBUSMENU_CLIENT(userdata));
return;
}
/* When we have a name and an object, build the two proxies and get the
first version of the layout */
static void
build_proxies (DbusmenuClient * client)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
GError * error = NULL;
g_return_if_fail(priv->dbus_object != NULL);
g_return_if_fail(priv->dbus_name != NULL);
priv->session_bus = dbus_g_bus_get(DBUS_BUS_SESSION, &error);
if (error != NULL) {
g_error("Unable to get session bus: %s", error->message);
g_error_free(error);
build_dbus_proxy(client);
return;
}
priv->propproxy = dbus_g_proxy_new_for_name_owner(priv->session_bus,
priv->dbus_name,
priv->dbus_object,
DBUS_INTERFACE_PROPERTIES,
&error);
if (error != NULL) {
g_warning("Unable to get property proxy for %s on %s: %s", priv->dbus_name, priv->dbus_object, error->message);
g_error_free(error);
return;
}
g_object_add_weak_pointer(G_OBJECT(priv->propproxy), (gpointer *)&priv->propproxy);
g_signal_connect(G_OBJECT(priv->propproxy), "destroy", G_CALLBACK(proxy_destroyed), client);
priv->menuproxy = dbus_g_proxy_new_for_name_owner(priv->session_bus,
priv->dbus_name,
priv->dbus_object,
"org.ayatana.dbusmenu",
&error);
if (error != NULL) {
g_warning("Unable to get dbusmenu proxy for %s on %s: %s", priv->dbus_name, priv->dbus_object, error->message);
g_error_free(error);
return;
}
g_object_add_weak_pointer(G_OBJECT(priv->menuproxy), (gpointer *)&priv->menuproxy);
g_signal_connect(G_OBJECT(priv->menuproxy), "destroy", G_CALLBACK(proxy_destroyed), client);
/* If we get here, we don't need the DBus proxy */
if (priv->dbusproxy != NULL) {
g_object_unref(G_OBJECT(priv->dbusproxy));
priv->dbusproxy = NULL;
}
dbus_g_proxy_add_signal(priv->menuproxy, "LayoutUpdate", G_TYPE_INT, G_TYPE_INVALID);
dbus_g_proxy_connect_signal(priv->menuproxy, "LayoutUpdate", G_CALLBACK(layout_update), client, NULL);
dbus_g_object_register_marshaller(_dbusmenu_server_marshal_VOID__UINT_STRING_STRING, G_TYPE_NONE, G_TYPE_UINT, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INVALID);
dbus_g_proxy_add_signal(priv->menuproxy, "IdPropUpdate", G_TYPE_UINT, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INVALID);
dbus_g_proxy_connect_signal(priv->menuproxy, "IdPropUpdate", G_CALLBACK(id_prop_update), client, NULL);
dbus_g_proxy_add_signal(priv->menuproxy, "IdUpdate", G_TYPE_UINT, G_TYPE_INVALID);
dbus_g_proxy_connect_signal(priv->menuproxy, "IdUpdate", G_CALLBACK(id_update), client, NULL);
update_layout(client);
return;
}
/* Get the "revision" attribute of the node, parse it and
return it. Also we're checking to ensure the node
is a 'menu' here. */
static gint
parse_node_get_revision (xmlNodePtr node)
{
if (g_strcmp0((gchar *)node->name, "menu") != 0) {
/* This kills some nodes early */
g_warning("XML Node is not 'menu' it is '%s'", node->name);
return 0;
}
xmlAttrPtr attrib;
for (attrib = node->properties; attrib != NULL; attrib = attrib->next) {
if (g_strcmp0((gchar *)attrib->name, "revision") == 0) {
if (attrib->children != NULL) {
guint revision = (guint)g_ascii_strtoull((gchar *)attrib->children->content, NULL, 10);
/* g_debug ("Found ID: %d", id); */
return revision;
}
break;
}
}
g_warning("Unable to find a revision on the node");
return 0;
}
/* Get the ID attribute of the node, parse it and
return it. Also we're checking to ensure the node
is a 'menu' here. */
static guint
parse_node_get_id (xmlNodePtr node)
{
if (g_strcmp0((gchar *)node->name, "menu") != 0) {
/* This kills some nodes early */
g_warning("XML Node is not 'menu' it is '%s'", node->name);
return 0;
}
xmlAttrPtr attrib;
for (attrib = node->properties; attrib != NULL; attrib = attrib->next) {
if (g_strcmp0((gchar *)attrib->name, "id") == 0) {
if (attrib->children != NULL) {
guint id = (guint)g_ascii_strtoull((gchar *)attrib->children->content, NULL, 10);
/* g_debug ("Found ID: %d", id); */
return id;
}
break;
}
}
g_warning("Unable to find an ID on the node");
return 0;
}
/* A small helper that calls _property_set on each hash table
entry in the properties hash. */
static void
get_properties_helper (gpointer key, gpointer value, gpointer data)
{
dbusmenu_menuitem_property_set((DbusmenuMenuitem *)data, (gchar *)key, (gchar *)value);
return;
}
/* This is the callback for the properties on a menu item. There
should be all of them in the Hash, and they we use foreach to
copy them into the menuitem.
This isn't the most efficient way. We can optimize this by
somehow removing the foreach. But that is for later. */
static void
menuitem_get_properties_cb (DBusGProxy * proxy, GHashTable * properties, GError * error, gpointer data)
{
if (error != NULL) {
g_warning("Error getting properties on a menuitem: %s", error->message);
return;
}
g_hash_table_foreach(properties, get_properties_helper, data);
g_hash_table_destroy(properties);
return;
}
/* This is a different get properites call back that also sends
new signals. It basically is a small wrapper around the original. */
static void
menuitem_get_properties_new_cb (DBusGProxy * proxy, GHashTable * properties, GError * error, gpointer data)
{
if (error != NULL) {
g_warning("Error getting properties on a new menuitem: %s", error->message);
return;
}
g_return_if_fail(data != NULL);
newItemPropData * propdata = (newItemPropData *)data;
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(propdata->client);
menuitem_get_properties_cb (proxy, properties, error, propdata->item);
gboolean handled = FALSE;
const gchar * type;
DbusmenuClientTypeHandler newfunc = NULL;
type = dbusmenu_menuitem_property_get(propdata->item, "type");
if (type != NULL) {
newfunc = g_hash_table_lookup(priv->type_handlers, type);
} else {
newfunc = g_hash_table_lookup(priv->type_handlers, DBUSMENU_CLIENT_TYPES_DEFAULT);
}
if (newfunc != NULL) {
handled = newfunc(propdata->item, propdata->parent, propdata->client);
}
#ifdef MASSIVEDEBUGGING
g_debug("Client has realized a menuitem: %d", dbusmenu_menuitem_get_id(propdata->item));
#endif
g_signal_emit(G_OBJECT(propdata->item), DBUSMENU_MENUITEM_SIGNAL_REALIZED_ID, 0, TRUE);
if (!handled) {
g_signal_emit(G_OBJECT(propdata->client), signals[NEW_MENUITEM], 0, propdata->item, TRUE);
}
g_free(propdata);
return;
}
static void
menuitem_call_cb (DBusGProxy * proxy, GError * error, gpointer userdata)
{
DbusmenuMenuitem * mi = (DbusmenuMenuitem *)userdata;
if (error != NULL) {
g_warning("Unable to call menu item %d: %s", dbusmenu_menuitem_get_id(mi), error->message);
}
return;
}
static void
menuitem_activate (DbusmenuMenuitem * mi, DbusmenuClient * client)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
org_ayatana_dbusmenu_call_async (priv->menuproxy, dbusmenu_menuitem_get_id(mi), menuitem_call_cb, mi);
return;
}
/* Parse recursively through the XML and make it into
objects as need be */
static DbusmenuMenuitem *
parse_layout_xml(DbusmenuClient * client, xmlNodePtr node, DbusmenuMenuitem * item, DbusmenuMenuitem * parent, DBusGProxy * proxy)
{
guint id = parse_node_get_id(node);
#ifdef MASSIVEDEBUGGING
g_debug("Client looking at node with id: %d", id);
#endif
if (item == NULL || dbusmenu_menuitem_get_id(item) != id || id == 0) {
if (item != NULL) {
if (parent != NULL) {
dbusmenu_menuitem_child_delete(parent, item);
}
g_object_unref(G_OBJECT(item));
item = NULL;
}
if (id == 0) {
g_warning("ID from XML file is zero");
return NULL;
}
/* Build a new item */
item = dbusmenu_menuitem_new_with_id(id);
if (parent == NULL) {
dbusmenu_menuitem_set_root(item, TRUE);
}
g_signal_connect(G_OBJECT(item), DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, G_CALLBACK(menuitem_activate), client);
/* Get the properties queued up for this item */
/* Not happy about this, but I need these :( */
newItemPropData * propdata = g_new0(newItemPropData, 1);
if (propdata != NULL) {
propdata->client = client;
propdata->item = item;
propdata->parent = parent;
org_ayatana_dbusmenu_get_properties_async(proxy, id, menuitem_get_properties_new_cb, propdata);
} else {
g_warning("Unable to allocate memory to get properties for menuitem. This menuitem will never be realized.");
}
}
xmlNodePtr children;
guint position;
GList * oldchildren = dbusmenu_menuitem_take_children(item);
/* g_debug("Starting old children: %d", g_list_length(oldchildren)); */
for (children = node->children, position = 0; children != NULL; children = children->next, position++) {
/* g_debug("Looking at child: %d", position); */
guint childid = parse_node_get_id(children);
DbusmenuMenuitem * childmi = NULL;
GList * childsearch = NULL;
for (childsearch = oldchildren; childsearch != NULL; childsearch = g_list_next(childsearch)) {
DbusmenuMenuitem * cs_mi = DBUSMENU_MENUITEM(childsearch->data);
if (childid == dbusmenu_menuitem_get_id(cs_mi)) {
oldchildren = g_list_remove(oldchildren, cs_mi);
childmi = cs_mi;
break;
}
}
childmi = parse_layout_xml(client, children, childmi, item, proxy);
dbusmenu_menuitem_child_add_position(item, childmi, position);
}
/* g_debug("Stopping old children: %d", g_list_length(oldchildren)); */
GList * oldchildleft = NULL;
for (oldchildleft = oldchildren; oldchildleft != NULL; oldchildleft = g_list_next(oldchildleft)) {
DbusmenuMenuitem * oldmi = DBUSMENU_MENUITEM(oldchildleft->data);
#ifdef MASSIVEDEBUGGING
g_debug("Unref'ing menu item with layout update. ID: %d", dbusmenu_menuitem_get_id(oldmi));
#endif
g_object_unref(G_OBJECT(oldmi));
}
g_list_free(oldchildren);
return item;
}
/* Take the layout passed to us over DBus and turn it into
a set of beautiful objects */
static gint
parse_layout (DbusmenuClient * client, const gchar * layout)
{
#ifdef MASSIVEDEBUGGING
g_debug("Client Parsing a new layout");
#endif
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
xmlDocPtr xmldoc;
xmldoc = xmlReadMemory(layout, g_utf8_strlen(layout, 16*1024), "dbusmenu.xml", NULL, 0);
xmlNodePtr root = xmlDocGetRootElement(xmldoc);
gint revision = parse_node_get_revision(root);
DbusmenuMenuitem * oldroot = priv->root;
priv->root = parse_layout_xml(client, root, priv->root, NULL, priv->menuproxy);
xmlFreeDoc(xmldoc);
if (priv->root == NULL) {
g_warning("Unable to parse layout on client %s object %s: %s", priv->dbus_name, priv->dbus_object, layout);
}
if (priv->root != oldroot) {
#ifdef MASSIVEDEBUGGING
g_debug("Client signaling root changed.");
#endif
g_signal_emit(G_OBJECT(client), signals[ROOT_CHANGED], 0, priv->root, TRUE);
}
return revision;
}
/* When the layout property returns, here's where we take care of that. */
static void
update_layout_cb (DBusGProxy * proxy, DBusGProxyCall * call, void * data)
{
DbusmenuClient * client = DBUSMENU_CLIENT(data);
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
GError * error = NULL;
GValue value = {0};
priv->layoutcall = NULL;
if (!dbus_g_proxy_end_call(proxy, call, &error, G_TYPE_VALUE, &value, G_TYPE_INVALID)) {
g_warning("Getting layout failed on client %s object %s: %s", priv->dbus_name, priv->dbus_object, error->message);
g_error_free(error);
return;
}
const gchar * xml = g_value_get_string(&value);
/* g_debug("Got layout string: %s", xml); */
gint rev = parse_layout(client, xml);
if (rev == 0) {
g_warning("Unable to parse layout!");
return;
}
priv->my_revision = rev;
/* g_debug("Root is now: 0x%X", (unsigned int)priv->root); */
#ifdef MASSIVEDEBUGGING
g_debug("Client signaling layout has changed.");
#endif
g_signal_emit(G_OBJECT(client), signals[LAYOUT_UPDATED], 0, TRUE);
if (priv->my_revision < priv->current_revision) {
update_layout(client);
}
return;
}
/* Call the property on the server we're connected to and set it up to
be async back to _update_layout_cb */
static void
update_layout (DbusmenuClient * client)
{
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
if (priv->propproxy == NULL) {
return;
}
if (priv->layoutcall != NULL) {
return;
}
priv->layoutcall = dbus_g_proxy_begin_call (priv->propproxy,
"Get",
update_layout_cb,
client,
NULL,
G_TYPE_STRING, "org.ayatana.dbusmenu",
G_TYPE_STRING, "layout",
G_TYPE_INVALID, G_TYPE_VALUE, G_TYPE_INVALID);
return;
}
/* Public API */
/**
dbusmenu_client_new:
@name: The DBus name for the server to connect to
@object: The object on the server to monitor
This function creates a new client that connects to a specific
server on DBus. That server is at a specific location sharing
a known object. The interface is assumed by the code to be
the DBus menu interface. The newly created client will start
sending out events as it syncs up with the server.
Return value: A brand new #DbusmenuClient
*/
DbusmenuClient *
dbusmenu_client_new (const gchar * name, const gchar * object)
{
DbusmenuClient * self = g_object_new(DBUSMENU_TYPE_CLIENT,
DBUSMENU_CLIENT_PROP_DBUS_NAME, name,
DBUSMENU_CLIENT_PROP_DBUS_OBJECT, object,
NULL);
return self;
}
/**
dbusmenu_client_get_root:
@client: The #DbusmenuClient to get the root node from
Grabs the root node for the specified client @client. This
function may block. It will block if there is currently a
call to update the layout, it will block on that layout
updated and then return the newly updated layout. Chances
are that this update is in the queue for the mainloop as
it would have been requested some time ago, but in theory
it could block longer.
Return value: A #DbusmenuMenuitem representing the root of
menu on the server. If there is no server or there is
an error receiving its layout it'll return #NULL.
*/
DbusmenuMenuitem *
dbusmenu_client_get_root (DbusmenuClient * client)
{
g_return_val_if_fail(DBUSMENU_IS_CLIENT(client), NULL);
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
if (priv->propproxy == NULL) {
return NULL;
}
#ifdef MASSIVEDEBUGGING
g_debug("Client get root: %X", (guint)priv->root);
#endif
return priv->root;
}
/**
dbusmenu_client_add_type_handler:
@client: Client where we're getting types coming in
@type: A text string that will be matched with the 'type'
property on incoming menu items
@newfunc: The function that will be executed with those new
items when they come in.
This function connects into the type handling of the #DbusmenuClient.
Every new menuitem that comes in immediately gets asked for it's
properties. When we get those properties we check the 'type'
property and look to see if it matches a handler that is known
by the client. If so, the @newfunc function is executed on that
#DbusmenuMenuitem. If not, then the DbusmenuClient::new-menuitem
signal is sent.
In the future the known types will be sent to the server so that it
can make choices about the menu item types availble.
Return value: If registering the new type was successful.
*/
gboolean
dbusmenu_client_add_type_handler (DbusmenuClient * client, const gchar * type, DbusmenuClientTypeHandler newfunc)
{
g_return_val_if_fail(DBUSMENU_IS_CLIENT(client), FALSE);
g_return_val_if_fail(type != NULL, FALSE);
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
#ifdef MASSIVEDEBUGGING
g_debug("Adding a type handler for '%s'", type);
#endif
if (priv->type_handlers == NULL) {
g_warning("Type handlers hashtable not built");
return FALSE;
}
gpointer value = g_hash_table_lookup(priv->type_handlers, type);
if (value != NULL) {
g_warning("Type '%s' already had a registered handler.", type);
return FALSE;
}
g_hash_table_insert(priv->type_handlers, g_strdup(type), newfunc);
return TRUE;
}