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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.ats.util.widgets.role;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.osee.ats.api.review.UserRole;
import org.eclipse.osee.framework.jdk.core.util.Collections;
import org.eclipse.osee.framework.ui.swt.Displays;
/**
* @author Donald G. Dunne
*/
public class UserRoleContentProvider implements ITreeContentProvider {
protected Collection<UserRole> rootSet = new HashSet<UserRole>();
private final UserRoleXViewer xViewer;
public UserRoleContentProvider(UserRoleXViewer WorldXViewer) {
super();
this.xViewer = WorldXViewer;
}
public void add(final UserRole item) {
add(Arrays.asList(item));
}
public void add(final Collection<? extends UserRole> items) {
Displays.ensureInDisplayThread(new Runnable() {
@Override
public void run() {
if (xViewer.getInput() == null) {
xViewer.setInput(rootSet);
}
rootSet.addAll(items);
xViewer.refresh();
};
});
}
public void set(final Collection<? extends UserRole> arts) {
Displays.ensureInDisplayThread(new Runnable() {
@Override
public void run() {
if (xViewer.getInput() == null) {
xViewer.setInput(rootSet);
}
clear();
add(arts);
};
});
}
public void clear() {
Displays.ensureInDisplayThread(new Runnable() {
@Override
public void run() {
if (xViewer.getInput() == null) {
xViewer.setInput(rootSet);
}
rootSet.clear();
xViewer.refresh();
};
});
}
@Override
@SuppressWarnings("rawtypes")
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof Object[]) {
return (Object[]) parentElement;
}
if (parentElement instanceof Collection) {
return ((Collection) parentElement).toArray();
}
return Collections.EMPTY_ARRAY;
}
@Override
public Object getParent(Object element) {
return null;
}
@Override
public boolean hasChildren(Object element) {
return false;
}
@Override
public Object[] getElements(Object inputElement) {
if (inputElement instanceof String) {
return new Object[] {inputElement};
}
return getChildren(inputElement);
}
@Override
public void dispose() {
// do nothing
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
// do nothing
}
/**
* @return the rootSet
*/
public Collection<UserRole> getRootSet() {
return rootSet;
}
}
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