org.kalypso.model.wspm.tuhh.ui.export.ValidatingWizardPage.java Source code

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Here is the source code for org.kalypso.model.wspm.tuhh.ui.export.ValidatingWizardPage.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 * 
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 * 
 *  and
 *  
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 * 
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 * 
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  Contact:
 * 
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *   
 *  ---------------------------------------------------------------------------*/
package org.kalypso.model.wspm.tuhh.ui.export;

import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.widgets.Composite;

public abstract class ValidatingWizardPage extends WizardPage {
    public ValidatingWizardPage(final String pageName) {
        super(pageName);
    }

    @Override
    public void createControl(final Composite parent) {
        final IMessageProvider message = validatePage();
        setPageComplete(message == null || message.getMessageType() != IMessageProvider.ERROR);
    }

    public void updateMessage() {
        final IMessageProvider validate = validatePage();
        setMessage(validate);
    }

    /**
     * Validates this page. Intended to be overwritten by clients.
     */
    protected abstract IMessageProvider validatePage();

    protected void setMessage(final IMessageProvider message) {
        if (message == null) {
            setMessage((String) null);
        } else {
            setMessage(message.getMessage(), message.getMessageType());
        }

        setPageComplete(message == null || message.getMessageType() != IMessageProvider.ERROR);
    }
}