/*******************************************************************************
* Copyright (c) 2014 Obeo and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.ocl.examples.emf.validation.validity.ui.filters;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.ocl.examples.emf.validation.validity.AbstractNode;
import org.eclipse.ocl.examples.emf.validation.validity.ResultConstrainingNode;
import org.eclipse.ocl.examples.emf.validation.validity.ResultValidatableNode;
import org.eclipse.ocl.examples.emf.validation.validity.utilities.IVisibilityFilter;
public class UnusedNodesVisibilityFilter implements IVisibilityFilter
{
@Override
public boolean isVisible(@NonNull AbstractNode abstractNode) {
if ((abstractNode instanceof ResultConstrainingNode) || (abstractNode instanceof ResultValidatableNode)) {
return abstractNode.isEnabled(); //(parent != null) && parent.isEnabled();
}
if (abstractNode.isEnabled()) {
return true;
}
for (@SuppressWarnings("null")@NonNull AbstractNode child : abstractNode.getChildren()) {
if (isUsed(child)) {
return true;
}
}
return false;
}
protected boolean isUsed(@NonNull AbstractNode node) {
if ((node instanceof ResultConstrainingNode) || (node instanceof ResultValidatableNode)) {
return false;
}
for (AbstractNode child : node.getVisibleChildren()) {
if (child.isEnabled()) {
return true;
}
}
return false;
}
}