1 files changed, 82 insertions, 0 deletions
diff --git a/src/engine/EnablePatchEvent.cpp b/src/engine/EnablePatchEvent.cpp
new file mode 100644
index 00000000..6af3b844
--- /dev/null
+++ b/src/engine/EnablePatchEvent.cpp
@@ -0,0 +1,82 @@
+/* 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 "EnablePatchEvent.h"
+#include "Responder.h"
+#include "Om.h"
+#include "OmApp.h"
+#include "Patch.h"
+#include "util.h"
+#include "ClientBroadcaster.h"
+#include "ObjectStore.h"
+
+namespace Om {
+
+
+EnablePatchEvent::EnablePatchEvent(CountedPtr<Responder> responder, const string& patch_path)
+: QueuedEvent(responder),
+  m_patch_path(patch_path),
+  m_patch(NULL),
+  m_process_order(NULL)
+{
+}
+
+
+void
+EnablePatchEvent::pre_process()
+{
+	m_patch = om->object_store()->find_patch(m_patch_path);
+	
+	if (m_patch != NULL) {
+		/* Any event that requires a new process order will set the patch's
+		 * process order to NULL if it is executed when the patch is not
+		 * active.  So, if the PO is NULL, calculate it here */
+		if (m_patch->process_order() == NULL)
+			m_process_order = m_patch->build_process_order();
+	}
+
+	QueuedEvent::pre_process();
+}
+
+
+void
+EnablePatchEvent::execute(samplecount offset)
+{
+	if (m_patch != NULL) {
+		m_patch->process(true);
+
+		if (m_patch->process_order() == NULL)
+			m_patch->process_order(m_process_order);
+	}
+	
+	QueuedEvent::execute(offset);
+}
+
+
+void
+EnablePatchEvent::post_process()
+{
+	if (m_patch != NULL) {
+		m_responder->respond_ok();
+		om->client_broadcaster()->send_patch_enable(m_patch_path);
+	} else {
+		m_responder->respond_error(string("Patch ") + m_patch_path + " not found");
+	}
+}
+
+
+} // namespace Om
+