NewEntityIndexAction.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:
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 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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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
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package org.objectstyle.wolips.eomodeler.actions;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;

import org.eclipse.jface.viewers.IStructuredSelection;
import org.objectstyle.wolips.eomodeler.Messages;
import org.objectstyle.wolips.eomodeler.core.model.EOAttribute;
import org.objectstyle.wolips.eomodeler.core.model.EOEntity;
import org.objectstyle.wolips.eomodeler.core.model.EOEntityIndex;
import org.objectstyle.wolips.eomodeler.core.model.EOModelException;
import org.objectstyle.wolips.eomodeler.core.model.EOModelVerificationFailure;

public class NewEntityIndexAction extends AbstractNewObjectAction<EOEntity, EOEntityIndex> {
	public NewEntityIndexAction() {
		super(EOEntity.class, Messages.getString("EOEntityIndex.newName"));
	}

	@Override
	protected EOEntityIndex createChild(EOEntity parent, Set<EOModelVerificationFailure> failures) throws EOModelException {
		IStructuredSelection selection = getSelection();
		List<EOAttribute> attributes = new LinkedList<EOAttribute>();
		Iterator selectionIter = selection.iterator();
		while (selectionIter.hasNext()) {
			Object selectedObject = selectionIter.next();
			if (selectedObject instanceof EOAttribute) {
				EOAttribute selectedAttribute = (EOAttribute) selectedObject;
				if (selectedAttribute.getEntity().equals(parent)) {
					attributes.add(selectedAttribute);
				}
			}
		}
		EOEntityIndex entityIndex;
		if (attributes.isEmpty()) {
			entityIndex = parent.addBlankEntityIndex(Messages.getString("EOEntityIndex.newName"));
		} else {
			entityIndex = parent.addEntityIndex(attributes);
		}
		return entityIndex;
	}

	@Override
	protected String getNoSelectionMessage() {
		return Messages.getString("EOEntityIndex.noEntitySelectedMessage");
	}

	@Override
	protected String getNoSelectionTitle() {
		return Messages.getString("EOEntityIndex.noEntitySelectedTitle");
	}
}