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/*****************************************************************************
* Copyright (c) 2014 CEA LIST.
*
* 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:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.dev.types.providers;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.MetamodelType;
import org.eclipse.gmf.runtime.emf.type.core.SpecializationType;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.papyrus.dev.types.utils.IElementTypeComparator;
public class ElementTypesContentProvider implements ITreeContentProvider {
private Map<IElementType, List<SpecializationType>> elementTypesHierarchy = new HashMap<IElementType, List<SpecializationType>>();
@Override
public void dispose() {
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (newInput instanceof Object[]) {
elementTypesHierarchy.clear();
for (Object elementType : ((Object[]) newInput)) {
if (elementType instanceof MetamodelType) {
if (!elementTypesHierarchy.containsKey(elementType)) {
elementTypesHierarchy.put((MetamodelType) elementType, new ArrayList<SpecializationType>());
}
} else if (elementType instanceof SpecializationType) {
for (IElementType superType : ((SpecializationType) elementType).getSpecializedTypes()) {
if (!elementTypesHierarchy.containsKey(superType)) {
elementTypesHierarchy.put(superType, new ArrayList<SpecializationType>());
}
elementTypesHierarchy.get(superType).add((SpecializationType) elementType);
}
}
}
}
}
@Override
public Object[] getElements(Object inputElement) {
inputChanged(null, null, inputElement);
ArrayList<IElementType> result = new ArrayList<IElementType>();
for (IElementType iElementType : elementTypesHierarchy.keySet()) {
if (iElementType instanceof MetamodelType) {
result.add(iElementType);
}
}
Collections.sort(result, new IElementTypeComparator());
return result.toArray();
}
@Override
public Object[] getChildren(Object parentElement) {
return elementTypesHierarchy.containsKey(parentElement) ? elementTypesHierarchy.get(parentElement).toArray() : Collections.emptyList().toArray();
}
@Override
public Object getParent(Object element) {
return null;
}
@Override
public boolean hasChildren(Object element) {
return getChildren(element).length == 0 ? false : true;
}
}
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