Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.exportto.swing.impl;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.cresques.cts.IProjection;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.exportto.swing.spi.ExporttoSwingProvider;

import org.gvsig.exportto.swing.spi.ExporttoSwingProviderFactory;

import org.gvsig.exportto.swing.spi.ExporttoSwingProviderManager;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.i18n.Messages;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.dynobject.exception.DynFieldNotFoundException;

import org.gvsig.tools.extensionpoint.ExtensionPoint;

import org.gvsig.tools.extensionpoint.ExtensionPoint.Extension;

import org.gvsig.tools.extensionpoint.ExtensionPointManager;

import org.gvsig.tools.service.Service;

import org.gvsig.tools.service.ServiceException;

import org.gvsig.tools.service.spi.AbstractProviderManager;

import org.gvsig.tools.service.spi.Provider;

import org.gvsig.tools.service.spi.ProviderFactory;

import org.gvsig.tools.service.spi.ProviderServices;

/**

 * @author gvSIG Team

 * @version $Id$

 * 

 */

public class DefaultExporttoSwingProviderManager extends

    AbstractProviderManager implements ExporttoSwingProviderManager {

    private static final Logger LOG = LoggerFactory

        .getLogger(DefaultExporttoSwingProviderManager.class);

    private static final String PROVIDERS_NAME = "Exportto.swing.providers";

    private static final String PROVIDERS_DESCRIPTION =

        "Exportto swing providers";

    private static final String PARAMETER_FEATURESTORE = "FeatureStore";

    private static final String PARAMETER_PROJECTION = "Projection";

    public DefaultExporttoSwingProviderManager() {

        super();

    }

    public ProviderServices createProviderServices(Service service) {

        return new DefaultExporttoSwingProviderServices();

    }

    public List<String> getProviderNames() {

        return getProviderNames(new int[0]);

    }

    public List<String> getProviderNames(int[] providerTypes) {

        ExtensionPointManager extensionPointManager =

            ToolsLocator.getExtensionPointManager();

        ExtensionPoint extensionPoint =

            extensionPointManager.get(this.getRegistryKey());

        List<String> providers = new ArrayList<String>();

        if (extensionPoint != null) {

            @SuppressWarnings("unchecked")

            Iterator<Extension> it = extensionPoint.iterator();

            while (it.hasNext()) {

                Extension extension = it.next();

                try {

                    ExporttoSwingProviderFactory exporttoSwingProviderFactory =

                        (ExporttoSwingProviderFactory) extension.create();

                    if (providerTypes.length == 0) {

                        providers.add(exporttoSwingProviderFactory.getName());

                    } else {

                        boolean areSupported = true;

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

                            if (!exporttoSwingProviderFactory

                                .support(providerTypes[i])) {

                                areSupported = false;

                                break;

                            }

                        }

                        if (areSupported) {

                            providers.add(exporttoSwingProviderFactory

                                .getName());

                        }

                    }

                } catch (InstantiationException e) {

                    LOG.error(

                        "Not possible to create the exportto provider factory",

                        e);

                } catch (IllegalAccessException e) {

                    LOG.error(

                        "Not possible to create the exportto provider factory",

                        e);

                } catch (ServiceException e) {

                    LOG.error(

                        "Not possible to check if the provider support a format",

                        e);

                }

            }

        }

        return providers;

    }

    protected String getRegistryDescription() {

        return PROVIDERS_DESCRIPTION;

    }

    protected String getRegistryKey() {

        return PROVIDERS_NAME;

    }

    public ExporttoSwingProvider createExporttoSwingProvider(

        String providerName, FeatureStore featureStore, IProjection projection)

        throws ServiceException {

        DynObject serviceParameters = createServiceParameters(providerName);

        serviceParameters.setDynValue(PARAMETER_FEATURESTORE, featureStore);

        try {

            serviceParameters.setDynValue(PARAMETER_PROJECTION, projection);

        } catch (DynFieldNotFoundException e) {

            LOG.info("This provider doesn't accept projection", e);

        }

        Provider provider =

            createProvider(serviceParameters,

                new DefaultExporttoSwingProviderServices());

        if (!(provider instanceof ExporttoSwingProvider)) {

            throw new NotExporttoSwingProviderException(providerName);

        }

        return (ExporttoSwingProvider) provider;

    }

    public boolean support(String providerName, int providerType)

        throws ServiceException {

        ExtensionPointManager epm = ToolsLocator.getExtensionPointManager();

        ExtensionPoint ep = epm.get(this.getRegistryKey());

        ExporttoSwingProviderFactory exporttoSwingProviderFactory = null;

        if (ep != null) {

            try {

                exporttoSwingProviderFactory =

                    ((ExporttoSwingProviderFactory) ep.create(providerName));

                return exporttoSwingProviderFactory.support(providerType);

            } catch (InstantiationException e) {

                LOG.error(

                    "Not possible to create the exportto provider factory", e);

            } catch (IllegalAccessException e) {

                LOG.error(

                    "Not possible to create the exportto provider factory", e);

            }

        }

        return false;

    }

    public void addProviderFactory(ProviderFactory providerFactory) {

        if (providerFactory == null) {

            throw new IllegalArgumentException(

                "ProviderFactory cannot be null.");

        }

        if (!(providerFactory instanceof ExporttoSwingProviderFactory)) {

            throw new IllegalArgumentException(providerFactory.getName()

                + " must implement the ExporttoSwingProviderFactory interface");

        }

        super.addProviderFactory(providerFactory);

    }

    public String getDescription(String providerName) {

        if (providerName == null) {

            return Messages.getText("exporer_to");

        }

        ExtensionPointManager extensionPointManager =

            ToolsLocator.getExtensionPointManager();

        ExtensionPoint extensionPoint =

            extensionPointManager.get(this.getRegistryKey());

        try {

            Object object = extensionPoint.create(providerName);

            if (object != null) {

                return Messages.getText(((ExporttoSwingProviderFactory) object)

                    .getDescription());

            }

        } catch (InstantiationException e) {

            LOG.error("Not possible to get the exportto provider factory", e);

        } catch (IllegalAccessException e) {

            LOG.error("Not possible to get the exportto provider factory", e);

        }

        return Messages.getText("exporer_to_format",

            new String[] { providerName });

    }

}