1 files changed, 168 insertions, 0 deletions
diff --git a/src/libs/engine/events/DestroyEvent.cpp b/src/libs/engine/events/DestroyEvent.cpp
new file mode 100644
index 00000000..3988195a
--- /dev/null
+++ b/src/libs/engine/events/DestroyEvent.cpp
@@ -0,0 +1,168 @@
+/* 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 "DestroyEvent.h"
+#include "Responder.h"
+#include "Om.h"
+#include "OmApp.h"
+#include "Patch.h"
+#include "Tree.h"
+#include "Node.h"
+#include "Plugin.h"
+#include "InternalNode.h"
+#include "DisconnectNodeEvent.h"
+#include "DisconnectPortEvent.h"
+#include "ClientBroadcaster.h"
+#include "Maid.h"
+#include "ObjectStore.h"
+#include "util/Path.h"
+#include "QueuedEventSource.h"
+#include "Port.h"
+
+namespace Om {
+
+
+DestroyEvent::DestroyEvent(CountedPtr<Responder> responder, const string& path, bool lock_mutex)
+: QueuedEvent(responder, true),
+  m_path(path),
+  m_node(NULL),
+  m_patch_listnode(NULL),
+  m_store_treenode(NULL),
+  m_process_order(NULL),
+  m_disconnect_event(NULL),
+  m_parent_disconnect_event(NULL)
+{
+}
+
+
+DestroyEvent::DestroyEvent(CountedPtr<Responder> responder, Node* node, bool lock_mutex)
+: QueuedEvent(responder, true),
+  m_path(node->path()),
+  m_node(node),
+  m_patch_listnode(NULL),
+  m_store_treenode(NULL),
+  m_process_order(NULL),
+  m_disconnect_event(NULL),
+  m_parent_disconnect_event(NULL)
+{
+}
+
+
+DestroyEvent::~DestroyEvent()
+{
+	delete m_disconnect_event;
+	delete m_parent_disconnect_event;
+}
+
+
+void
+DestroyEvent::pre_process()
+{
+	if (m_node == NULL) {
+		OmObject* const obj = om->object_store()->find_node(m_path);
+	
+		if (obj != NULL && obj->as_node() != NULL)
+			m_node = obj->as_node();
+	}
+
+	if (m_node != NULL && m_path != "/") {
+		assert(m_node->parent_patch() != NULL);
+		m_patch_listnode = m_node->parent_patch()->remove_node(m_path.name());
+		if (m_patch_listnode != NULL) {
+			assert(m_patch_listnode->elem() == m_node);
+			
+			m_node->remove_from_store();
+
+			if (m_node->providers()->size() != 0 || m_node->dependants()->size() != 0) {
+				m_disconnect_event = new DisconnectNodeEvent(m_node);
+				m_disconnect_event->pre_process();
+			}
+			
+			// Create a recursive disconnect event for the parent port, if a bridge node
+			Port* parent_port = m_patch_listnode->elem()->as_port();
+			if (parent_port != NULL) {  // Bridge node
+				m_parent_disconnect_event = new DisconnectPortEvent(parent_port);
+				m_parent_disconnect_event->pre_process();
+			}
+				
+			if (m_node->parent_patch()->process()) {
+				m_process_order = m_node->parent_patch()->build_process_order();
+				// Remove node to be removed from the process order so it isn't executed by
+				// Patch::run and can safely be destroyed
+				//for (size_t i=0; i < m_process_order->size(); ++i)
+				//	if (m_process_order->at(i) == m_node)
+				//		m_process_order->at(i) = NULL; // ew, gap
+				
+#ifdef DEBUG
+				// Be sure node is removed from process order, so it can be destroyed
+				for (size_t i=0; i < m_process_order->size(); ++i)
+					assert(m_process_order->at(i) != m_node);
+#endif
+			}
+		}
+	}
+
+	QueuedEvent::pre_process();
+}
+
+
+void
+DestroyEvent::execute(samplecount offset)
+{
+	QueuedEvent::execute(offset);
+
+	if (m_patch_listnode != NULL) {
+		m_node->remove_from_patch();
+		
+		if (m_disconnect_event != NULL)
+			m_disconnect_event->execute(offset);
+		if (m_parent_disconnect_event != NULL)
+			m_parent_disconnect_event->execute(offset);
+		
+		if (m_node->parent_patch()->process_order() != NULL)
+			om->maid()->push(m_node->parent_patch()->process_order());
+		m_node->parent_patch()->process_order(m_process_order);
+	}
+}
+
+
+void
+DestroyEvent::post_process()
+{
+	m_source->unblock();
+	
+	if (m_node == NULL) {
+		if (m_path == "/")
+			m_responder->respond_error("You can not destroy the root patch (/)");
+		else
+			m_responder->respond_error("Could not find node to destroy");
+	} else if (m_patch_listnode != NULL) {	
+		m_node->deactivate();
+		m_responder->respond_ok();
+		if (m_disconnect_event != NULL)
+			m_disconnect_event->post_process();
+		if (m_parent_disconnect_event != NULL)
+			m_parent_disconnect_event->post_process();
+		om->client_broadcaster()->send_destroyed(m_path);
+		om->maid()->push(m_patch_listnode);
+		om->maid()->push(m_node);
+	} else {
+		m_responder->respond_error("Unable to destroy object");
+	}
+}
+
+
+} // namespace Om