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/**
* Copyright (c) 2017, 2019 CEA LIST.
*
* 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:
* Maged Elaasar - Initial API and implementation
* Nicolas FAUVERGUE (CEA LIST) nicolas.fauvergue@cea.fr - Bug 550569
*
*/
package org.eclipse.papyrus.infra.ui.architecture.handlers;
import java.util.Arrays;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.emf.common.command.CompoundCommand;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.papyrus.infra.architecture.ArchitectureDescriptionUtils;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.infra.ui.architecture.dialogs.ArchitectureContextDialog;
import org.eclipse.papyrus.infra.ui.architecture.messages.Messages;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* A command handler for changing architecture context in a model set
*
* @since 1.0
*/
public class ChangeArchitectureContextHandler extends AbstractHandler {
/**
* Constructor.
*/
public ChangeArchitectureContextHandler() {
// nothing by default
}
/**
* {@inheritDoc}
*
* @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute(final ExecutionEvent event) throws ExecutionException {
EObject selection = getSelection(event);
if (selection == null) {
return new IContributionItem[0];
}
ResourceSet resourceSet = selection.eResource().getResourceSet();
if (!(resourceSet instanceof ModelSet)) {
return new IContributionItem[0];
}
final ArchitectureDescriptionUtils helper = new ArchitectureDescriptionUtils((ModelSet) resourceSet);
String[] contextIds = new String[] { helper.getArchitectureContextId() };
String[] viewpointIds = helper.getArchitectureViewpointIds().toArray(new String[0]);
final Shell shell = Display.getCurrent().getActiveShell();
ArchitectureContextDialog dialog = new ArchitectureContextDialog(shell, Messages.ChangeArchitectureContextHandler_dialogTitle, Messages.ChangeArchitectureContextHandler_dialogLabel);
dialog.setSelectedContexts(contextIds);
dialog.setSelectedViewpoints(viewpointIds);
dialog.create();
if (dialog.open() == Window.OK) {
final TransactionalEditingDomain dom = helper.getModelSet().getTransactionalEditingDomain();
final CompoundCommand cmd = new CompoundCommand("Change Architecture Context"); //$NON-NLS-1$
if (!Arrays.equals(dialog.getSelectedContextIds(), contextIds)) {
cmd.append(helper.switchArchitectureContextId(dialog.getSelectedContextIds()[0]));
}
if (!Arrays.equals(dialog.getSelectedViewpointIds(), viewpointIds)) {
cmd.append(helper.switchArchitectureViewpointIds(dialog.getSelectedViewpointIds()));
}
if (!cmd.isEmpty()) {
dom.getCommandStack().execute(cmd);
}
}
return null;
}
/**
* Gets the current selection as an EObject
*
* @return The current selection, or <code>null</code> if it is not an EObject
*/
protected EObject getSelection(ExecutionEvent event) {
Object selection = HandlerUtil.getCurrentSelection(event);
if (selection instanceof IStructuredSelection) {
IStructuredSelection struct = (IStructuredSelection) selection;
Object obj = struct.getFirstElement();
return EMFHelper.getEObject(obj);
}
return null;
}
}
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