From 406d7376bf8faf0965fb87feaf6401962d357962 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 14 Aug 2008 20:22:45 +0000
Subject: Only show GUI menu items for nodes with available GUIs.

git-svn-id: http://svn.drobilla.net/lad/ingen@1378 a436a847-0d15-0410-975c-d299462d15a1
---
 src/libs/client/PluginModel.cpp | 20 +++++++++++++++++++-
 src/libs/client/PluginModel.hpp |  2 ++
 src/libs/gui/NodeMenu.cpp       |  6 +++++-
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/libs/client/PluginModel.cpp b/src/libs/client/PluginModel.cpp
index 80d6a9f1..c798294d 100644
--- a/src/libs/client/PluginModel.cpp
+++ b/src/libs/client/PluginModel.cpp
@@ -44,6 +44,25 @@ PluginModel::default_node_name()
 
 
 #ifdef HAVE_SLV2
+bool
+PluginModel::has_ui() const
+{
+	Glib::Mutex::Lock lock(_rdf_world->mutex());
+
+	SLV2Value gtk_gui_uri = slv2_value_new_uri(_slv2_world,
+		"http://lv2plug.in/ns/extensions/ui#GtkUI");
+
+	SLV2UIs uis = slv2_plugin_get_uis(_slv2_plugin);
+
+	if (slv2_values_size(uis) > 0)
+		for (unsigned i=0; i < slv2_uis_size(uis); ++i)
+			if (slv2_ui_is_a(slv2_uis_get_at(uis, i), gtk_gui_uri))
+				return true;
+
+	return false;
+}
+
+
 SharedPtr<PluginUI>
 PluginModel::ui(Ingen::Shared::World* world, SharedPtr<NodeModel> node) const
 {
@@ -87,7 +106,6 @@ PluginModel::get_lv2_icon_path(SLV2Plugin plugin)
 	slv2_value_free(svg_icon_pred);
 	return result;
 }
-
 #endif
 
 } // namespace Client
diff --git a/src/libs/client/PluginModel.hpp b/src/libs/client/PluginModel.hpp
index a7adc735..f8630e94 100644
--- a/src/libs/client/PluginModel.hpp
+++ b/src/libs/client/PluginModel.hpp
@@ -100,6 +100,8 @@ public:
 		_slv2_plugins = slv2_world_get_all_plugins(_slv2_world);
 	}
 
+	bool has_ui() const;
+
 	SharedPtr<PluginUI> ui(Ingen::Shared::World* world,
 	                       SharedPtr<NodeModel>  node) const;
 
diff --git a/src/libs/gui/NodeMenu.cpp b/src/libs/gui/NodeMenu.cpp
index 6051ec7c..05139540 100644
--- a/src/libs/gui/NodeMenu.cpp
+++ b/src/libs/gui/NodeMenu.cpp
@@ -64,7 +64,11 @@ NodeMenu::init(SharedPtr<NodeModel> node)
 	_embed_gui_menuitem->signal_toggled().connect(sigc::mem_fun(this,
 			&NodeMenu::on_menu_embed_gui));
 
-	if ((!node->plugin()) || node->plugin()->type() != PluginModel::LV2) {
+	const PluginModel* plugin = dynamic_cast<const PluginModel*>(node->plugin());
+	if (plugin && plugin->type() == PluginModel::LV2 && plugin->has_ui()) {
+		_popup_gui_menuitem->show();
+		_embed_gui_menuitem->show();
+	} else {
 		_popup_gui_menuitem->hide();
 		_embed_gui_menuitem->hide();
 	}
-- 
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