Fix explicit sequence port monitoring

Patch from Robin Gareus.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@5786 a436a847-0d15-0410-975c-d299462d15a1

3 files changed, 7 insertions, 1 deletions

diff --git a/ingen/client/PluginUI.hpp b/ingen/client/PluginUI.hpp
index 1ccadc58..d4d47e3b 100644
--- a/ingen/client/PluginUI.hpp
+++ b/ingen/client/PluginUI.hpp
@@ -59,6 +59,7 @@ public:
 	 * no widget and the UI can not be used.
 	 */
 	bool instantiate();
+	bool instantiated () { return _instance != NULL; }
 
 	SuilWidget get_widget();
 
diff --git a/src/gui/NodeModule.cpp b/src/gui/NodeModule.cpp
index 4e149bbf..04a46a9f 100644
--- a/src/gui/NodeModule.cpp
+++ b/src/gui/NodeModule.cpp
@@ -326,6 +326,11 @@ NodeModule::popup_gui()
 			_plugin_ui->signal_property_changed().connect(
 				sigc::mem_fun(app(), &App::set_property));
 
+			if (!_plugin_ui->instantiated() &&  !_plugin_ui->instantiate()) {
+				app().log().error("Failed to instantiate LV2 UI\n");
+				return false;
+			}
+
 			GtkWidget* c_widget = (GtkWidget*)_plugin_ui->get_widget();
 			_gui_widget = Glib::wrap(c_widget);
 
diff --git a/src/server/PortImpl.cpp b/src/server/PortImpl.cpp
index 89b99b4c..13eaa8e2 100644
--- a/src/server/PortImpl.cpp
+++ b/src/server/PortImpl.cpp
@@ -426,7 +426,7 @@ PortImpl::monitor(Context& context, bool send_now)
 	const bool time_to_send = send_now || _frames_since_monitor >= period;
 	const bool is_sequence  = (_type.id() == PortType::ATOM &&
 	                           _buffer_type == _bufs.uris().atom_Sequence);
-	if (!time_to_send && (!is_sequence || _monitored || buffer(0)->value())) {
+	if (!time_to_send && !(is_sequence && _monitored) && (!is_sequence && buffer(0)->value())) {
 		return;
 	}