From acbda29f838280ba98cf9e9e539e9d8a6e8fc6ad Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Fri, 9 Jun 2006 15:07:31 +0000
Subject: Added Om aka Graph aka god knows what

git-svn-id: http://svn.drobilla.net/lad/grauph@9 a436a847-0d15-0410-975c-d299462d15a1
---
 src/engine/ClearPatchEvent.cpp | 114 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 src/engine/ClearPatchEvent.cpp

(limited to 'src/engine/ClearPatchEvent.cpp')

diff --git a/src/engine/ClearPatchEvent.cpp b/src/engine/ClearPatchEvent.cpp
new file mode 100644
index 00000000..8b8fc223
--- /dev/null
+++ b/src/engine/ClearPatchEvent.cpp
@@ -0,0 +1,114 @@
+/* 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 "ClearPatchEvent.h"
+#include "Responder.h"
+#include "Om.h"
+#include "OmApp.h"
+#include "Patch.h"
+#include "ClientBroadcaster.h"
+#include "util.h"
+#include "ObjectStore.h"
+#include "Port.h"
+#include "Maid.h"
+#include "Node.h"
+#include "Connection.h"
+#include "QueuedEventSource.h"
+
+namespace Om {
+
+
+ClearPatchEvent::ClearPatchEvent(CountedPtr<Responder> responder, const string& patch_path)
+: QueuedEvent(responder, true),
+  m_patch_path(patch_path),
+  m_patch(NULL),
+  m_process(false)
+{
+}
+
+
+void
+ClearPatchEvent::pre_process()
+{
+	m_patch = om->object_store()->find_patch(m_patch_path);
+	
+	if (m_patch != NULL) {
+	
+		m_process = m_patch->process();
+
+		for (List<Node*>::const_iterator i = m_patch->nodes().begin(); i != m_patch->nodes().end(); ++i)
+			(*i)->remove_from_store();
+	}
+
+	QueuedEvent::pre_process();
+}
+
+
+void
+ClearPatchEvent::execute(samplecount offset)
+{
+	if (m_patch != NULL) {
+		m_patch->process(false);
+		
+		for (List<Node*>::const_iterator i = m_patch->nodes().begin(); i != m_patch->nodes().end(); ++i)
+			(*i)->remove_from_patch();
+
+		if (m_patch->process_order() != NULL) {
+			om->maid()->push(m_patch->process_order());
+			m_patch->process_order(NULL);
+		}
+	}
+	
+	QueuedEvent::execute(offset);
+}
+
+
+void
+ClearPatchEvent::post_process()
+{	
+	if (m_patch != NULL) {
+		// Delete all nodes
+		for (List<Node*>::iterator i = m_patch->nodes().begin(); i != m_patch->nodes().end(); ++i) {
+			(*i)->deactivate();
+			delete *i;
+		}
+		m_patch->nodes().clear();
+
+		// Delete all connections
+		for (List<Connection*>::iterator i = m_patch->connections().begin(); i != m_patch->connections().end(); ++i)
+			delete *i;
+		m_patch->connections().clear();
+		
+		// Restore patch's run state
+		m_patch->process(m_process);
+
+		// Make sure everything's sane
+		assert(m_patch->nodes().size() == 0);
+		assert(m_patch->connections().size() == 0);
+		
+		// Reply
+		m_responder->respond_ok();
+		om->client_broadcaster()->send_patch_cleared(m_patch_path);
+	} else {
+		m_responder->respond_error(string("Patch ") + m_patch_path + " not found");
+	}
+	
+	m_source->unblock();
+}
+
+
+} // namespace Om
+
-- 
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