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/*******************************************************************************
* Copyright (c) 2007, 2015 THALES GLOBAL SERVICES and others.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.diagram.ui.tools.internal.actions.repair.commands;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.common.command.IdentityCommand;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.gmf.runtime.diagram.ui.internal.editparts.DefaultNodeEditPart;
import org.eclipse.gmf.runtime.diagram.ui.services.editpart.EditPartService;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.sirius.business.api.helper.SiriusUtil;
import org.eclipse.sirius.common.tools.DslCommonPlugin;
import org.eclipse.sirius.diagram.ui.provider.Messages;
import org.eclipse.sirius.ui.tools.api.profiler.SiriusTasks;
/**
* Specific command to remove invalid views.
*
* @author mporhel
*/
@SuppressWarnings("restriction")
public class RemoveInvalidViewsCommand extends IdentityCommand {
private Resource airdResource;
/**
* Default constructor.
*
* @param airdResource
* Aird {@link Resource}
*/
public RemoveInvalidViewsCommand(Resource airdResource) {
super(Messages.RemoveInvalidViewsCommand_label);
this.airdResource = airdResource;
}
/**
* Overridden.
*
* {@inheritDoc}
*/
@Override
public void execute() {
final Iterator<EObject> iterContents = airdResource.getAllContents();
final List<View> viewsToRemove = new LinkedList<View>();
while (iterContents.hasNext()) {
final EObject next = iterContents.next();
if (next instanceof View) {
final View currentView = (View) next;
if (!isValid(currentView)) {
viewsToRemove.add(currentView);
}
}
}
for (final View view : viewsToRemove) {
SiriusUtil.delete(view);
}
airdResource = null;
}
/**
* Check if a view is valid.
*
* @param view
* the view to check
* @return <code>true</code>if the view is valid, <code>false</code>
* otherwise
*/
public boolean isValid(final View view) {
return isValid(view, false);
}
/**
* Check if a view is valid.
*
* @param view
* the view to check
* @param checkElement
* true if we must check that the element of this view is not
* null and is in a resource
* @return <code>true</code>if the view is valid, <code>false</code>
* otherwise
*/
public boolean isValid(final View view, boolean checkElement) {
DslCommonPlugin.PROFILER.startWork(SiriusTasks.IS_VIEW_VALID);
// Otherwise some providers could be removed from GMF Services
boolean result = true;
try {
if (checkElement) {
result = view.getElement() != null && view.getElement().eResource() != null;
}
result = result && !(EditPartService.getInstance().createGraphicEditPart(view) instanceof DefaultNodeEditPart);
// CHECKSTYLE:OFF
} catch (final Exception e) {
// CHECKSTYLE:ON
// silent
}
DslCommonPlugin.PROFILER.stopWork(SiriusTasks.IS_VIEW_VALID);
return result;
}
/**
* Overridden to avoid the CommandStack to keep a reference to this command.
*
* {@inheritDoc}
*/
@Override
public boolean canUndo() {
return false;
}
}
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