EOModelListContentProvider.java

/*
 * ====================================================================
 * 
 * The ObjectStyle Group Software License, Version 1.0
 * 
 * Copyright (c) 2006 The ObjectStyle Group and individual authors of the
 * software. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
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 * 3. The end-user documentation included with the redistribution, if any, must
 * include the following acknowlegement: "This product includes software
 * developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately,
 * this acknowlegement may appear in the software itself, if and wherever such
 * third-party acknowlegements normally appear.
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 * For written permission, please contact andrus@objectstyle.org.
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 * ====================================================================
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 * This software consists of voluntary contributions made by many individuals on
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 * Group, please see <http://objectstyle.org/>.
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package org.objectstyle.wolips.eomodeler.editors.relationship;

import java.util.Set;

import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.objectstyle.wolips.eomodeler.core.model.EOEntity;
import org.objectstyle.wolips.eomodeler.core.model.EOModel;
import org.objectstyle.wolips.eomodeler.core.model.EOModelGroup;
import org.objectstyle.wolips.eomodeler.core.model.EORelationship;

public class EOModelListContentProvider implements IStructuredContentProvider {
	public Object[] getElements(Object _inputElement) {
		EOModelGroup modelGroup;
		if (_inputElement instanceof EORelationship) {
			modelGroup = ((EORelationship) _inputElement).getEntity().getModel().getModelGroup();
		} else if (_inputElement instanceof EOEntity) {
			modelGroup = ((EOEntity) _inputElement).getModel().getModelGroup();
		} else if (_inputElement instanceof EOModel) {
			modelGroup = ((EOModel) _inputElement).getModelGroup();
		} else if (_inputElement instanceof EOModelGroup) {
			modelGroup = (EOModelGroup) _inputElement;
		} else {
			throw new IllegalArgumentException("Unknown input element: " + _inputElement);
		}
		Set modelsList = modelGroup.getSortedModels();
		EOModel[] models = (EOModel[]) modelsList.toArray(new EOModel[modelsList.size()]);
		return models;
	}

	public void dispose() {
		// DO NOTHING
	}

	public void inputChanged(Viewer _viewer, Object _oldInput, Object _newInput) {
		// DO NOTHING
	}
}