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authorConor Curran <conor.curran@canonical.com>2011-01-09 08:14:43 +0000
committerConor Curran <conor.curran@canonical.com>2011-01-09 08:14:43 +0000
commit9f10c1e5b7a7ceac671d23cdfef2176d4ac8e74d (patch)
treed014028a8f49f9ea05e1af2ed3b25b0af2e5bb9a /src/mpris2-watcher.vala
parentce996a8b02131d9711cc3dee67f6c3844e55b8e8 (diff)
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interface introspection underway@
Diffstat (limited to 'src/mpris2-watcher.vala')
-rw-r--r--src/mpris2-watcher.vala70
1 files changed, 65 insertions, 5 deletions
diff --git a/src/mpris2-watcher.vala b/src/mpris2-watcher.vala
index 7814975..f572ab7 100644
--- a/src/mpris2-watcher.vala
+++ b/src/mpris2-watcher.vala
@@ -17,6 +17,8 @@ You should have received a copy of the GNU General Public License along
with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+using Xml;
+
[DBus (name = "org.freedesktop.DBus")]
public interface FreeDesktopObject: Object {
public abstract async string[] list_names() throws IOError;
@@ -25,6 +27,16 @@ public interface FreeDesktopObject: Object {
string new_owner );
}
+[DBus (name = "org.freedesktop.DBus.Introspectable")]
+public interface FreeDesktopIntrospectable: Object {
+ public abstract string introspect() throws IOError;
+}
+
+public errordomain XmlError {
+ FILE_NOT_FOUND,
+ XML_DOCUMENT_EMPTY
+}
+
public class Mpris2Watcher : GLib.Object
{
private const string FREEDESKTOP_SERVICE = "org.freedesktop.DBus";
@@ -33,14 +45,14 @@ public class Mpris2Watcher : GLib.Object
private const string MPRIS_MEDIA_PLAYER_PATH = "/org/mpris/MediaPlayer2";
FreeDesktopObject fdesktop_obj;
-
+
public signal void client_appeared ( string desktop_file_name, string dbus_name );
public signal void client_disappeared ( string dbus_name );
public Mpris2Watcher ()
{
}
-
+
construct
{
try {
@@ -76,21 +88,69 @@ public class Mpris2Watcher : GLib.Object
}
}
- private MprisRoot? create_mpris_root(string name){
+ private MprisRoot? create_mpris_root ( string name ){
MprisRoot mpris2_root = null;
if ( name.has_prefix (MPRIS_PREFIX) ){
try {
mpris2_root = Bus.get_proxy_sync ( BusType.SESSION,
- name,
- MPRIS_MEDIA_PLAYER_PATH );
+ name,
+ MPRIS_MEDIA_PLAYER_PATH );
}
catch (IOError e){
warning( "Mpris2watcher could not create a root interface: %s",
e.message );
}
}
+ this.supports_playlists(name);
return mpris2_root;
}
+
+ private bool supports_playlists ( string name )
+ {
+ FreeDesktopIntrospectable introspectable;
+ try {
+ introspectable = Bus.get_proxy_sync ( BusType.SESSION,
+ name,
+ MPRIS_MEDIA_PLAYER_PATH );
+ var results = introspectable.introspect();
+ return this.parse_interfaces (results);
+ }
+ catch (IOError e){
+ warning( "Could not create an introspectable object: %s",
+ e.message );
+ }
+ return false;
+ }
+
+ private bool parse_interfaces( string interface_info )
+ {
+ //parse the document from path
+ debug ("attempting to parse %s", interface_info);
+ Xml.Doc* xml_doc = Parser.parse_doc (interface_info);
+ if (xml_doc == null) {
+ warning ("Mpris2Watcher - parse-interfaces - failed to instantiate xml doc");
+ return false;
+ }
+ //get the root node. notice the dereferencing operator -> instead of .
+ Xml.Node* root_node = xml_doc->get_root_element ();
+ if (root_node == null) {
+ //free the document manually before throwing because the garbage collector can't work on pointers
+ delete xml_doc;
+ warning ("Mpris2Watcher - the interface info xml is empty");
+ return false;
+ }
+
+ //let's parse those nodes
+ for (Xml.Node* iter = root_node->children; iter != null; iter = iter->next) {
+ //spaces btw. tags are also nodes, discard them
+ if (iter->type != ElementType.ELEMENT_NODE)
+ continue;
+ string node_name = iter->name; //get the node's name
+ debug ( "this dbus object has interface %s ", node_name );
+ }
+ delete xml_doc;
+ return false;
+ }
// At startup check to see if there are clients up that we are interested in
// More relevant for development and daemon's like mpd.