1 files changed, 48 insertions, 0 deletions
diff --git a/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/filter/FilterEditUtils.java b/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/filter/FilterEditUtils.java
new file mode 100644
index 0000000000..2b04941338
--- /dev/null
+++ b/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/filter/FilterEditUtils.java
@@ -0,0 +1,48 @@
+/*******************************************************************************
+ * Copyright (c) 2013, 2014 Kalray
+ *
+ * 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:
+ *   Xavier Raynaud - Initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.tracecompass.tmf.ui.views.filter;
+
+import org.eclipse.jface.util.LocalSelectionTransfer;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.tracecompass.tmf.core.filter.model.ITmfFilterTreeNode;
+
+/**
+ * Utilities for cut/copy/paste/dnd in filter view
+ * @author Xavier Raynaud <xavier.raynaud@kalray.eu>
+ */
+class FilterEditUtils {
+
+    /**
+     * Gets the ITmfFilterTreeNode in LocalSelectionTransfer, if any
+     * @return a ITmfFilterTreeNode or <code>null</code>
+     */
+    public static ITmfFilterTreeNode getTransferredTreeNode() {
+        ITmfFilterTreeNode treeNodeToDrop = null;
+        ISelection sel = LocalSelectionTransfer.getTransfer().getSelection();
+        if (sel instanceof IStructuredSelection) {
+            IStructuredSelection selection = (IStructuredSelection) sel;
+            for (Object data : selection.toList()) {
+                if (!(data instanceof ITmfFilterTreeNode)) {
+                    return null;
+                } else if (treeNodeToDrop != null) {
+                    // should never occur, since tree has SWT.SINGLE style
+                    return null;
+                } else {
+                    treeNodeToDrop = (ITmfFilterTreeNode) data;
+                }
+            }
+        }
+        return treeNodeToDrop;
+    }
+}