| /******************************************************************************* |
| * Copyright (c) 2016 EfficiOS Inc., Alexandre Montplaisir, Philippe Proulx |
| * |
| * 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 |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.internal.provisional.analysis.lami.ui.handler; |
| |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.TreeSelection; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.PlatformUI; |
| |
| /** |
| * Utilities for UI handlers |
| * |
| * @author Philippe Proulx |
| */ |
| public final class HandlerUtils { |
| |
| private HandlerUtils() { |
| // Do nothing |
| } |
| |
| /** |
| * Get the current selected UI element. Can be used instead of |
| * {@link org.eclipse.ui.handlers.HandlerUtil#getCurrentSelection} when an |
| * ExecutionEvent is not available. |
| * |
| * @return The element consisting of the selection |
| */ |
| public static @Nullable Object getSelectedModelElement() { |
| // Check if we are closing down |
| final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow(); |
| if (window == null) { |
| return null; |
| } |
| |
| // Get the selection |
| final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(); |
| final IWorkbenchPart part = page.getActivePart(); |
| if (part == null) { |
| return null; |
| } |
| final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider(); |
| if (selectionProvider == null) { |
| return null; |
| } |
| final ISelection selection = selectionProvider.getSelection(); |
| |
| if (selection instanceof TreeSelection) { |
| final TreeSelection sel = (TreeSelection) selection; |
| // There should be only one item selected as per the plugin.xml |
| return sel.getFirstElement(); |
| } |
| |
| return null; |
| } |
| |
| } |