| /******************************************************************************* |
| * 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 2.0 which |
| * accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * 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 { |
| |
| private FilterEditUtils() { |
| // Do nothing, private constructor |
| } |
| |
| /** |
| * 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; |
| } |
| } |