/*****************************************************************************
 * Copyright (c) 2013 CEA LIST.
 *
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.infra.nattable.provider;

import java.util.Iterator;
import java.util.List;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.osgi.util.NLS;
import org.eclipse.papyrus.infra.nattable.messages.Messages;
import org.eclipse.papyrus.infra.nattable.model.nattable.nattableproblem.Problem;
import org.eclipse.papyrus.infra.nattable.model.nattable.nattableproblem.StringResolutionProblem;
import org.eclipse.papyrus.infra.services.labelprovider.service.IFilteredLabelProvider;
import org.eclipse.papyrus.infra.ui.emf.providers.EMFLabelProvider;

/**
 * Label Provider for problem
 *
 * @author Vincent Lorenzo
 *
 */
public class ProblemLabelProvider extends EMFLabelProvider implements IFilteredLabelProvider {

	/**
	 *
	 * @see org.eclipse.papyrus.infra.services.labelprovider.service.IFilteredLabelProvider#accept(java.lang.Object)
	 *
	 * @param element
	 * @return
	 */
	@Override
	public boolean accept(Object element) {
		return element instanceof Problem;
	}

	/**
	 *
	 * @see org.eclipse.papyrus.infra.ui.emf.providers.EMFLabelProvider#getText(org.eclipse.emf.ecore.EObject)
	 *
	 * @param element
	 * @return
	 */
	@Override
	protected String getText(final EObject element) {
		final Problem pb = (Problem) element;
		if (pb instanceof StringResolutionProblem) {
			return ((StringResolutionProblem) pb).getValueAsString();
		}
		return pb.getDescription();
	}

	/**
	 *
	 * @param element
	 *            a problem
	 * @return
	 *         the text to display for a problem in a tooltip
	 */
	// TODO : should be obtained using a service or a specific wrapper to get tooltip
	public String getTooltipText(final EObject element) {
		if (element instanceof Problem) {
			final Problem problem = (Problem) element;
			final StringBuilder builder = new StringBuilder();
			if (problem instanceof StringResolutionProblem) {
				final List<String> unresolvedStrings = ((StringResolutionProblem) problem).getUnresolvedString();
				builder.append(NLS.bind(Messages.ProblemLabelProvider_StringsValuesCanBeResolved, unresolvedStrings.size()));
				if (unresolvedStrings.size() == 1) {
					builder.append(" "); //$NON-NLS-1$
					builder.append(unresolvedStrings.get(0));
				} else {
					final Iterator<String> iterOnString = ((StringResolutionProblem) problem).getUnresolvedString().iterator();
					while (iterOnString.hasNext()) {
						builder.append("\n\t- "); //$NON-NLS-1$
						builder.append(iterOnString.next());
					}
				}
			} else {
				builder.append(problem.getDescription());
			}
			return builder.toString();
		}
		return null;
	}

}