| /******************************************************************************* |
| * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, and others. |
| * 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: |
| * BMW Car IT - Initial API and implementation |
| * Technische Universitaet Muenchen - Major refactoring and extension |
| *******************************************************************************/ |
| package org.eclipse.emf.edapt.history.instantiation.ui; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.ui.IViewPart; |
| import org.eclipse.ui.IViewReference; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| |
| /** |
| * Base class for command handlers that are attached to a view. |
| * |
| * @author herrmama |
| * @author $Author$ |
| * @version $Rev$ |
| * @levd.rating RED Rev: |
| */ |
| public abstract class OperationBrowserHandlerBase extends AbstractHandler { |
| |
| /** {@inheritDoc} */ |
| @Override |
| public final Object execute(ExecutionEvent event) throws ExecutionException { |
| final OperationBrowser browser = getOperationBrowser(event); |
| Assert.isNotNull(browser); |
| if (browser.getEditor() == null) { |
| MessageDialog.openError(Display.getDefault().getActiveShell(), |
| "Metamodel not found", //$NON-NLS-1$ |
| "No metamodel found. Please open one."); //$NON-NLS-1$ |
| return null; |
| } |
| return execute(browser, event); |
| } |
| |
| /** Get the operation browser. */ |
| private OperationBrowser getOperationBrowser(ExecutionEvent event) { |
| final IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event); |
| for (final IViewReference reference : window.getActivePage() |
| .getViewReferences()) { |
| if (OperationBrowser.ID.equals(reference.getId())) { |
| final IViewPart view = reference.getView(true); |
| /* |
| * check the instance since due to problems with the workspace, etc. the view might be an ErrorViewPart |
| */ |
| if (view instanceof OperationBrowser) { |
| return (OperationBrowser) view; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** Execute the command using the operation browser. */ |
| protected abstract Object execute(OperationBrowser browser, |
| ExecutionEvent event) throws ExecutionException; |
| |
| } |