/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2005, 2010 SAP AG.
 * 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:
 *    SAP AG - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.graphiti.ui.internal.parts.directedit;

import org.eclipse.graphiti.features.IDirectEditingFeature;
import org.eclipse.graphiti.func.IProposal;
import org.eclipse.jface.fieldassist.IContentProposal;
import org.eclipse.jface.fieldassist.IContentProposalProvider;

/**
 * @noinstantiate This class is not intended to be instantiated by clients.
 * @noextend This class is not intended to be subclassed by clients.
 */
public class ContentProposalProvider implements IContentProposalProvider {

	private IDirectEditHolder directEditHolder;

	public ContentProposalProvider(IDirectEditHolder directEditHolder) {
		this.directEditHolder = directEditHolder;
	}

	public IContentProposal[] getProposals(String contents, int position) {
		// collect and return proposals

		IContentProposal[] proposals = new IContentProposal[0];

		IDirectEditingFeature def = directEditHolder.getDirectEditingFeature();
		if (directEditHolder.isSimpleMode()) {
			String[] proposalStrings = def.getValueProposals(contents, position, directEditHolder.getDirectEditingContext());

			if (proposalStrings != null) {
				proposals = new IContentProposal[proposalStrings.length];

				for (int i = 0; i < proposalStrings.length; i++) {
					proposals[i] = new ContentProposal(directEditHolder, position, contents, proposalStrings[i], null, null);
				}
			}
		} else {
			IProposal[] valueProposals = def.getProposalSupport().getValueProposals(contents, position,
					directEditHolder.getDirectEditingContext());

			if (valueProposals != null) {
				proposals = new IContentProposal[valueProposals.length];

				for (int i = 0; i < valueProposals.length; i++) {
					proposals[i] = new ContentProposal(directEditHolder, position, contents, valueProposals[i].getText(),
							valueProposals[i], null);
				}
			}

		}

		return proposals;
	}

}