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

 * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Symbian Foundation - initial contribution.

 * Contributors:

 * Description:

 * Overview:

 * Details:

 * Platforms/Drives/Compatibility:

 * Assumptions/Requirement/Pre-requisites:

 * Failures and causes:

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

package org.symbian.tools.tmw.internal.ui.wizard;

import java.text.MessageFormat;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import org.eclipse.core.databinding.validation.IValidator;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Status;

import org.symbian.tools.tmw.ui.TMWCoreUI;

public class RegexpValidator implements IValidator {

    private final String errorMessage;

    private final Pattern pattern;

    private final boolean match;

    public RegexpValidator(String pattern, String errorMessage, boolean match) {

        this.errorMessage = errorMessage;

        this.match = match;

        this.pattern = Pattern.compile(pattern);

    }

    public IStatus validate(Object value) {

        String string = value.toString();

        Matcher matcher = pattern.matcher(string);

        if (match && !matcher.matches()) {

            return new Status(IStatus.ERROR, TMWCoreUI.PLUGIN_ID, MessageFormat.format(errorMessage, string));

        } else if (!match && matcher.find()) {

            return new Status(IStatus.ERROR, TMWCoreUI.PLUGIN_ID, MessageFormat.format(errorMessage,

                    string.substring(matcher.start(), matcher.end())));

        } else {

            return Status.OK_STATUS;

        }

    }

}