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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.key.polytomous;
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import java.util.ArrayList;
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import java.util.List;
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import org.eclipse.jface.viewers.Viewer;
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import org.eclipse.zest.core.viewers.IGraphContentProvider;
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import eu.etaxonomy.cdm.model.description.PolytomousKey;
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import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
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import eu.etaxonomy.taxeditor.editor.Messages;
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import eu.etaxonomy.taxeditor.model.PolytomousKeyRelationship;
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/**
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*
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* @author n.hoffmann
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* @created Mar 30, 2011
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* @version 1.0
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*/
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class PolytomousKeyGraphContentProvider implements IGraphContentProvider {
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private List<PolytomousKeyRelationship> relations;
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@Override
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public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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}
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@Override
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public void dispose() {
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}
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@Override
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public Object[] getElements(Object inputElement) {
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relations = new ArrayList<PolytomousKeyRelationship>();
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if (inputElement instanceof PolytomousKey) {
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getTreeRecursively(relations, inputElement);
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}
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return relations.toArray();
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}
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private void getTreeRecursively(List<PolytomousKeyRelationship> relations,
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Object parent) {
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List<PolytomousKeyNode> children;
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if (parent instanceof PolytomousKeyNode) {
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((PolytomousKeyNode) parent).removeNullValueFromChildren();
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children = ((PolytomousKeyNode) parent).getChildren();
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} else if (parent instanceof PolytomousKey) {
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children = new ArrayList<PolytomousKeyNode>();
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children.add(((PolytomousKey) parent).getRoot());
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} else {
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throw new RuntimeException(
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Messages.PolytomousKeyGraphContentProvider_WRONG_PARENT
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+ parent.getClass());
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}
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for (PolytomousKeyNode childNode : children) {
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relations.add(new PolytomousKeyRelationship(parent, childNode));
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getTreeRecursively(relations, childNode);
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}
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}
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@Override
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public Object getSource(Object relationship) {
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return ((PolytomousKeyRelationship) relationship).getSource();
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}
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@Override
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public Object getDestination(Object relationship) {
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return ((PolytomousKeyRelationship) relationship).getDestination();
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}
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}
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