X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fgtkmm2ext%2Fbinding_proxy.cc;h=f12c64cf68973a0bf39a626ee5167abdb2c60a8a;hb=f99dc6d2ab5acd69268f993ea2bb628d70728426;hp=6c60deaa8ffbd71c22ea7eeff054a46386b584b5;hpb=68e943265edf04e63a8e8b8f62bab20f99d9c637;p=ardour.git

diff --git a/libs/gtkmm2ext/binding_proxy.cc b/libs/gtkmm2ext/binding_proxy.cc
index 6c60deaa8f..f12c64cf68 100644
--- a/libs/gtkmm2ext/binding_proxy.cc
+++ b/libs/gtkmm2ext/binding_proxy.cc
@@ -40,6 +40,14 @@ BindingProxy::BindingProxy (boost::shared_ptr<Controllable> c)
 {			  
 }
 
+BindingProxy::BindingProxy ()
+	: prompter (0),
+	  bind_button (2),
+	  bind_statemask (Gdk::CONTROL_MASK)
+
+{			  
+}
+
 BindingProxy::~BindingProxy ()
 {
 	if (prompter) {
@@ -47,6 +55,13 @@ BindingProxy::~BindingProxy ()
 	}
 }
 
+void
+BindingProxy::set_controllable (boost::shared_ptr<Controllable> c)
+{
+	learning_finished ();
+	controllable = c;
+}
+
 void
 BindingProxy::set_bind_button_state (guint button, guint statemask)
 {
@@ -64,7 +79,7 @@ BindingProxy::get_bind_button_state (guint &button, guint &statemask)
 bool
 BindingProxy::button_press_handler (GdkEventButton *ev)
 {
-	if ((ev->state & bind_statemask) && ev->button == bind_button) { 
+	if (controllable && (ev->state & bind_statemask) && ev->button == bind_button) { 
 		if (Controllable::StartLearning (controllable.get())) {
 			string prompt = _("operate controller now");
 			if (prompter == 0) {
@@ -73,7 +88,7 @@ BindingProxy::button_press_handler (GdkEventButton *ev)
 			}
 			prompter->set_text (prompt);
 			prompter->touch (); // shows popup
-			learning_connection = controllable->LearningFinished.connect (mem_fun (*this, &BindingProxy::learning_finished));
+			controllable->LearningFinished.connect_same_thread (learning_connection, boost::bind (&BindingProxy::learning_finished, this));
 		}
 		return true;
 	}
@@ -92,10 +107,12 @@ BindingProxy::learning_finished ()
 
 
 bool
-BindingProxy::prompter_hiding (GdkEventAny *ev)
+BindingProxy::prompter_hiding (GdkEventAny */*ev*/)
 {
 	learning_connection.disconnect ();
-	Controllable::StopLearning (controllable.get());
+	if (controllable) {
+		Controllable::StopLearning (controllable.get());
+	}
 	return false;
 }