More juggling

git-svn-id: http://svn.drobilla.net/lad/grauph@15 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 128 insertions, 0 deletions

diff --git a/src/libs/engine/events/AddNodeEvent.cpp b/src/libs/engine/events/AddNodeEvent.cpp
new file mode 100644
index 00000000..2b31ef4a
--- /dev/null
+++ b/src/libs/engine/events/AddNodeEvent.cpp
@@ -0,0 +1,128 @@
+/* This file is part of Om.  Copyright (C) 2006 Dave Robillard.
+ * 
+ * Om is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * Om is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "AddNodeEvent.h"
+#include "Responder.h"
+#include "Patch.h"
+#include "Node.h"
+#include "Tree.h"
+#include "Plugin.h"
+#include "Om.h"
+#include "OmApp.h"
+#include "Patch.h"
+#include "NodeFactory.h"
+#include "ClientBroadcaster.h"
+#include "Maid.h"
+#include "util/Path.h"
+#include "ObjectStore.h"
+#include "util/Path.h"
+#include "Port.h"
+
+namespace Om {
+
+
+AddNodeEvent::AddNodeEvent(CountedPtr<Responder> responder, const string& path, Plugin* plugin, bool poly)
+: QueuedEvent(responder),
+  m_path(path),
+  m_plugin(plugin),
+  m_poly(poly),
+  m_patch(NULL),
+  m_node(NULL),
+  m_process_order(NULL),
+  m_node_already_exists(false)
+{
+}
+
+
+AddNodeEvent::~AddNodeEvent()
+{
+	delete m_plugin;
+}
+
+
+void
+AddNodeEvent::pre_process()
+{
+	if (om->object_store()->find(m_path) != NULL) {
+		m_node_already_exists = true;
+		QueuedEvent::pre_process();
+		return;
+	}
+
+	m_patch = om->object_store()->find_patch(m_path.parent());
+
+	if (m_patch != NULL) {
+		if (m_poly)
+			m_node = om->node_factory()->load_plugin(m_plugin, m_path.name(), m_patch->internal_poly(), m_patch);
+		else
+			m_node = om->node_factory()->load_plugin(m_plugin, m_path.name(), 1, m_patch);
+		
+		if (m_node != NULL) {
+			m_node->activate();
+		
+			// This can be done here because the audio thread doesn't touch the
+			// node tree - just the process order array
+			m_patch->add_node(new ListNode<Node*>(m_node));
+			m_node->add_to_store();
+				
+			if (m_patch->process())
+				m_process_order = m_patch->build_process_order();
+		}
+	}
+	QueuedEvent::pre_process();
+}
+
+
+void
+AddNodeEvent::execute(samplecount offset)
+{
+	QueuedEvent::execute(offset);
+
+	if (m_node != NULL) {
+		m_node->add_to_patch();
+		
+		if (m_patch->process_order() != NULL)
+			om->maid()->push(m_patch->process_order());
+		m_patch->process_order(m_process_order);
+	}
+}
+
+
+void
+AddNodeEvent::post_process()
+{
+	string msg;
+	if (m_node_already_exists) {
+		msg = string("Could not create node - ").append(m_path);// + " already exists.";
+		m_responder->respond_error(msg);
+	} else if (m_patch == NULL) {
+		msg = "Could not find patch '" + m_path.parent() +"' for add_node.";
+		m_responder->respond_error(msg);
+	} else if (m_node == NULL) {
+		msg = "Unable to load node ";
+		msg.append(m_path).append(" (you're missing the plugin \"").append(
+			m_plugin->lib_name()).append(":").append(m_plugin->plug_label()).append("\")");;
+		m_responder->respond_error(msg);
+	} else {
+		m_responder->respond_ok();
+		//om->client_broadcaster()->send_node_creation_messages(m_node);
+		om->client_broadcaster()->send_node(m_node);
+	}
+}
+
+
+} // namespace Om
+