1 files changed, 36 insertions, 0 deletions
diff --git a/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/uml2sd/handlers/provider/ISDCollapseProvider.java b/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/uml2sd/handlers/provider/ISDCollapseProvider.java
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index 0000000000..6571bc0393
--- /dev/null
+++ b/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/uml2sd/handlers/provider/ISDCollapseProvider.java
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+/**********************************************************************
+ * Copyright (c) 2005, 2014 IBM Corporation, Ericsson
+ * All rights reserved.   This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM - Initial API and implementation
+ *     Bernd Hufmann - Updated for TMF
+ **********************************************************************/
+
+package org.eclipse.tracecompass.tmf.ui.views.uml2sd.handlers.provider;
+
+import org.eclipse.tracecompass.tmf.ui.views.uml2sd.core.Lifeline;
+
+/**
+ * Interface for providing a collapse provider.
+ *
+ * Sequence diagram loaders which want to support Drag and Drop collapsing in the sequence diagram must implement this
+ * interface and register this implementation using <code>SDView.setCollapsingProvider();</code>
+ *
+ * @version 1.0
+ * @author sveyrier
+ */
+public interface ISDCollapseProvider {
+
+    /**
+     * Called back when the sequence diagram is requesting 2 lifelines collapsing
+     *
+     * @param lifeline1 - One of the lifeline to collapse
+     * @param lifeline2 - The other lifeline to collapse with
+     */
+    void collapseTwoLifelines(Lifeline lifeline1, Lifeline lifeline2);
+
+}