Rex_activatorProposalPostProcessor.java

/*******************************************************************************
 * Copyright (c) 2006-2012
 * Software Technology Group, Dresden University of Technology
 * DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
 * 
 * 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:
 *   Software Technology Group - TU Dresden, Germany;
 *   DevBoost GmbH - Berlin, Germany
 *      - initial API and implementation
 ******************************************************************************/
package org.reuseware.coconut.reuseextensionactivator.ui;

import java.util.ArrayList;
import java.util.List;

import org.reuseware.coconut.resource.ReuseResources;

/**
 * Customizes completion proposals that queries the repository for reuse extensions and takes
 * their full ID (including namespace) into account.
 */
public class Rex_activatorProposalPostProcessor {
	
	/**
	 * Adds proposals based on full IDs of registered REX files to proposal list.
	 * 
	 * @param proposals initial proposal list
	 * @return extended proposal list
	 */
	public List<Rex_activatorCompletionProposal> process(List<Rex_activatorCompletionProposal> proposals) {
		if (proposals.size() > 0) {
			Rex_activatorCompletionProposal prototypeProposal = proposals.get(0);
			if (prototypeProposal.getInsertString().equals("someRexNamespace")) {
				List<Rex_activatorCompletionProposal> newProposals = new ArrayList<Rex_activatorCompletionProposal>();
				for (List<String> rexID : ReuseResources.INSTANCE.getAllReuseExtensionIDs()) {
					String insertString = null;
					for (String segment : rexID) {
						if (insertString == null) {
							insertString = "";
						} else {
							insertString += ".";
						}
						insertString = insertString + segment;
					}
					insertString = insertString.substring(0, insertString.length() - ".rex".length());
					String prefix = prototypeProposal.getPrefix();
					if (!insertString.startsWith(prefix)) {
						int idx = insertString.indexOf("." + prefix);
						if (idx != -1) {
							insertString = insertString.substring(idx + 1);
						}
					}
					
					if (insertString.startsWith(prefix)) {
						Rex_activatorCompletionProposal proposal = new Rex_activatorCompletionProposal(
								null, insertString, prototypeProposal.getPrefix(), true, 
								prototypeProposal.getStructuralFeature(), prototypeProposal.getContainer());
						newProposals.add(proposal);							
					}
				}
				return newProposals;
			}
		}
		
		return proposals;
	}
	
}