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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.ote.ui.define.viewers.data;
import java.util.Collection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
/**
* @author Roberto E. Escobar
*/
public class DataItemContentProvider implements ITreeContentProvider {
private static final Object[] EMPTY_ARRAY = new Object[0];
@Override
@SuppressWarnings("unchecked")
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof Collection) {
return ((Collection) parentElement).toArray();
}
if (parentElement instanceof DataItem) {
return ((DataItem) parentElement).getChildren();
}
return EMPTY_ARRAY;
}
@Override
public Object getParent(Object element) {
if (element instanceof DataItem) {
return ((DataItem) element).getParent();
}
return null;
}
@Override
public boolean hasChildren(Object element) {
if (element instanceof Collection<?>) {
return true;
}
if (element instanceof DataItem) {
return ((DataItem) element).hasChildren();
}
return false;
}
@Override
public Object[] getElements(Object inputElement) {
if (inputElement instanceof String) {
return new Object[] {inputElement};
}
return getChildren(inputElement);
}
@Override
public void dispose() {
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
}
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