studio appeared/disappeared signals

daemon/dbus_iface_control.c

@@ -972,6 +972,24 @@ static void lashd_dbus_exit(method_call_t *call)
   g_quit = true;
 }
 
+void
+lashd_dbus_signal_emit_studio_appeared()
+{
+  signal_new_valist(
+    g_dbus_service,
+    "/", INTERFACE_NAME, "StudioAppeared",
+    DBUS_TYPE_INVALID);
+}
+
+void
+lashd_dbus_signal_emit_studio_disappeared()
+{
+  signal_new_valist(
+    g_dbus_service,
+    "/", INTERFACE_NAME, "StudioDisappeared",
+    DBUS_TYPE_INVALID);
+}
+
 void
 lashd_dbus_signal_emit_project_appeared(
   const char * project_name,

daemon/dbus_iface_control.h

@@ -23,6 +23,12 @@
 
 extern const interface_t g_lashd_interface_control;
 
+void
+lashd_dbus_signal_emit_studio_appeared();
+
+void
+lashd_dbus_signal_emit_studio_disappeared();
+
 void
 lashd_dbus_signal_emit_project_appeared(
   const char * project_name,

daemon/jack.c

@@ -9,6 +9,7 @@
 #include "jack.h"
 #include "jack_proxy.h"
 #include "studio.h"
+#include "dbus_iface_control.h"
 
 bool
 jack_conf_container_create(
@@ -411,6 +412,7 @@ on_jack_server_started(
     {
       g_studio_ptr->jack_conf_stable = true;
       lash_info("jack conf successfully retrieved");
+      lashd_dbus_signal_emit_studio_appeared();
       return;
     }
   }
@@ -438,6 +440,7 @@ on_jack_server_stopped(
 
   if (!g_studio_ptr->persisted)
   {
+    lashd_dbus_signal_emit_studio_disappeared();
     studio_destroy(g_studio_ptr);
     g_studio_ptr = NULL;
     return;

daemon/main.c

@@ -232,6 +232,7 @@ int main(int argc, char ** argv, char ** envp)
 
   if (g_studio_ptr != NULL)
   {
+    lashd_dbus_signal_emit_studio_appeared();
     studio_destroy(g_studio_ptr);
   }