addTemplates(contentAssistRequest, context, contentAssistRequest.getReplacementBeginPosition());

	}

	/**

	 * Adds templates to the list of proposals

	 * 

	 * @param contentAssistRequest

	 * @param context

	 * @param startOffset

	 */

	private void addTemplates(ContentAssistRequest contentAssistRequest, String context, int startOffset) {

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import org.eclipse.jface.text.IDocument;

import org.eclipse.jface.text.ITextSelection;

import org.eclipse.jface.text.Region;

import org.eclipse.jface.text.templates.TemplateException;

import org.eclipse.jface.text.templates.TemplateProposal;

	private static final class ProposalComparator implements Comparator {

		public int compare(Object o1, Object o2) {

			return ((TemplateProposal) o2).getRelevance() - ((TemplateProposal) o1).getRelevance();

		}

	}

	private static final Comparator fgProposalComparator = new ProposalComparator();

	/*

	 * Copied from super class except instead of calling createContext(viewer,

	 * region) call createContext(viewer, region, offset) instead

	 */

	public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {

		ITextSelection selection = (ITextSelection) viewer.getSelectionProvider().getSelection();

		// adjust offset to end of normalized selection

		if (selection.getOffset() == offset)

			offset = selection.getOffset() + selection.getLength();

		String prefix = extractPrefix(viewer, offset);

		Region region = new Region(offset - prefix.length(), prefix.length());

		TemplateContext context = createContext(viewer, region, offset);

		if (context == null)

			return new ICompletionProposal[0];

		context.setVariable("selection", selection.getText()); // name of the

																// selection

																// variables

																// {line,

																// word}_selection

																// //$NON-NLS-1$

		Template[] templates = getTemplates(context.getContextType().getId());

		List matches = new ArrayList();

		for (int i = 0; i < templates.length; i++) {

			Template template = templates[i];

			try {

				context.getContextType().validate(template.getPattern());

			}

			catch (TemplateException e) {

				continue;

			}

			if (template.matches(prefix, context.getContextType().getId()))

				matches.add(createProposal(template, context, (IRegion) region, getRelevance(template, prefix)));

		}

		Collections.sort(matches, fgProposalComparator);

		return (ICompletionProposal[]) matches.toArray(new ICompletionProposal[matches.size()]);

	}

	/**

	 * Creates a concrete template context for the given region in the

	 * document. This involves finding out which context type is valid at the

	 * given location, and then creating a context of this type. The default

	 * implementation returns a <code>SmartReplaceTemplateContext</code> for

	 * the context type at the given location. This takes the offset at which

	 * content assist was invoked into consideration.

	 * 

	 * @param viewer

	 *            the viewer for which the context is created

	 * @param region

	 *            the region into <code>document</code> for which the

	 *            context is created

	 * @param offset

	 *            the original offset where content assist was invoked

	 * @return a template context that can handle template insertion at the

	 *         given location, or <code>null</code>

	 */

	private TemplateContext createContext(ITextViewer viewer, IRegion region, int offset) {

		// pretty much same code as super.createContext except create SmartReplaceTemplateContext

		TemplateContextType contextType = getContextType(viewer, region);

		if (contextType != null) {

			IDocument document = viewer.getDocument();

			return new ReplaceNameTemplateContext(contextType, document, region.getOffset(), region.getLength(), offset);

		}

		return null;

	}

/*******************************************************************************

 * Copyright (c) 2006 IBM Corporation and others.

 * 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:

 *     IBM Corporation - initial API and implementation

 *******************************************************************************/

package org.eclipse.wst.xml.ui.internal.contentassist;

import org.eclipse.jface.text.BadLocationException;

import org.eclipse.jface.text.IDocument;

import org.eclipse.jface.text.Position;

import org.eclipse.jface.text.templates.DocumentTemplateContext;

import org.eclipse.jface.text.templates.Template;

import org.eclipse.jface.text.templates.TemplateBuffer;

import org.eclipse.jface.text.templates.TemplateContextType;

import org.eclipse.jface.text.templates.TemplateException;

/**

 * Just like DocumentTemplateContext except if an insert offset is passed in,

 * during evaluation, the "prefix" before the template will be checked to see

 * if it matches the template name. If so, overwrite the template name.

 * Otherwise, just insert the template at the insert offset location (by not

 * overwriting the prefix text)

 */

public class ReplaceNameTemplateContext extends DocumentTemplateContext {

	private int fInsertOffset = -1;

	/**

	 * Creates a document template context.

	 * 

	 * @param type

	 *            the context type

	 * @param document

	 *            the document this context applies to

	 * @param offset

	 *            the offset of the document region

	 * @param length

	 *            the length of the document region

	 */

	public ReplaceNameTemplateContext(TemplateContextType type, IDocument document, int offset, int length) {

		this(type, document, new Position(offset, length));

	}

	/**

	 * Creates a document template context. The supplied <code>Position</code>

	 * will be queried to compute the <code>getStart</code> and

	 * <code>getEnd</code> methods, which will therefore answer updated

	 * position data if it is registered with the document.

	 * 

	 * @param type

	 *            the context type

	 * @param document

	 *            the document this context applies to

	 * @param position

	 *            the position describing the area of the document which forms

	 *            the template context

	 * @since 3.1

	 */

	public ReplaceNameTemplateContext(TemplateContextType type, IDocument document, Position position) {

		super(type, document, position);

	}

	/**

	 * Creates a document template context.

	 * 

	 * @param type

	 *            the context type

	 * @param document

	 *            the document this context applies to

	 * @param offset

	 *            the offset of the document region

	 * @param length

	 *            the length of the document region

	 * @param insertOffset

	 *            the offset of the document region where insert was

	 *            originally requested

	 */

	public ReplaceNameTemplateContext(TemplateContextType type, IDocument document, int offset, int length, int insertOffset) {

		this(type, document, new Position(offset, length));

		fInsertOffset = insertOffset;

	}

	/*

	 * @see org.eclipse.jface.text.templates.TemplateContext#evaluate(org.eclipse.jface.text.templates.Template)

	 */

	public TemplateBuffer evaluate(Template template) throws BadLocationException, TemplateException {

		TemplateBuffer buffer = super.evaluate(template);

		if (buffer != null) {

			if (fInsertOffset > -1 && fInsertOffset > getStart()) {

				try {

					String prefix = getDocument().get(getStart(), fInsertOffset - getStart());

					if (!template.getName().startsWith(prefix)) {

						// generate a new buffer that actually contains the

						// text that was going to be overwritten

						buffer = new TemplateBuffer(prefix + buffer.getString(), buffer.getVariables());

					}

				}

				catch (BadLocationException e) {

				}

			}

		}

		return buffer;

	}

}