Application: gvSIG desktop » gvSIG tools: HyperLink

/* 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.hyperlink.app.extension.layers;

import java.awt.geom.Point2D;

import java.io.File;

import java.net.MalformedURLException;

import java.net.URI;

import java.net.URISyntaxException;

import java.net.URL;

import java.net.URLClassLoader;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import org.apache.commons.io.FileUtils;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.project.Project;

import org.gvsig.app.project.ProjectManager;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.dal.exception.DataException;

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

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

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

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

import org.gvsig.fmap.dal.serverexplorer.filesystem.FilesystemStoreParameters;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.hyperlink.app.extension.DefaultLinkTarget;

import org.gvsig.hyperlink.app.extension.LinkTarget;

import org.gvsig.tools.dispose.DisposableIterator;

public class VectLayerManager implements ILinkLayerManager {

    private FLyrVect _layer = null;

    @Override

    public LinkTarget[] getLink(Point2D point,

        double tolerance,

        String fieldName,

        String fileExtension) {

        FLyrVect lyrVect = (FLyrVect) _layer;

        //ArrayList<LinkTarget> uriList = new ArrayList();

        List<LinkTarget> uriList = new ArrayList();

        FeatureSet features;

        FeatureType featureType;

        try {

            // FIXME: Habr? que ver como lo hacemos con las capas multigeometr?a

            featureType = _layer.getFeatureStore().getDefaultFeatureType();

            features = lyrVect.queryByPoint(point, tolerance, featureType);

        } catch (DataException e) {

            return null;

        }

        // Si el conjunto creado no est? vac?o creamos el vector de URLS

        // correspondientes

        // a la consulta que hemos hecho.

        if (features != null) {

            try {

                DisposableIterator it;

                it = features.fastIterator();

                Object val = null;

                while (it.hasNext()) {

                    Feature feature = (Feature) it.next();

                            DefaultLinkTarget target = new DefaultLinkTarget(_layer, feature, fieldName, fileExtension);

                            uriList.add(target); //getURI(fieldValue, fileExtension));

                    }

                it.dispose();

                return uriList.toArray(new LinkTarget[0]);//(LinkTarget[]) uriList.toArray(); //(URI[]) uriList.toArray(new URI[0]);

            } catch (DataException e1) {

                PluginServices.getLogger()

                    .error("Hyperlink__cant_get_the_iterator", e1);

            }

        }

        return null; //new URI[0];

    }

    private URL toURL(File f) {

        try {

            return f.toURI().toURL();

        } catch (MalformedURLException ex) {

            return null;

        }

    }

    protected URI getBasicURI(String baseURI, String extension) throws URISyntaxException {

        String pathname;

        if( StringUtils.isEmpty(extension) ) {

            pathname = baseURI;

        } else {

            if (extension.startsWith(".")) {

                pathname = baseURI + extension;

            } else {

                pathname = baseURI + "." + extension;

            }

        }

        pathname = pathname.replace("\\","//");

        if( this._layer.getFeatureStore().getParameters() instanceof FilesystemStoreParameters ) {

            FilesystemStoreParameters params = (FilesystemStoreParameters) this._layer.getFeatureStore().getParameters();

            File f = params.getFile();

            URLClassLoader loader = new URLClassLoader(new URL[] {toURL(f)});

            URL url = loader.getResource(pathname);

            if( url != null ) {

                return url.toURI();

            }

            url = loader.getResource("/" + pathname);

            if( url != null ) {

                return url.toURI();

            }

            File ff = FileUtils.getFile(f.getParentFile(), pathname);

            if( ff.exists() ) {

                return ff.toURI();

            }

        }

        ProjectManager projectManager = ApplicationLocator.getProjectManager();

        Project project = projectManager.getCurrentProject();

        if( project.getFile()!=null ) {

            File ff = FileUtils.getFile(project.getFile().getParentFile(), pathname);

            if( ff.exists() ) {

                return ff.toURI();

            }

        }

        File ff = new File(pathname);

        if( ff.exists() ) {

            return ff.toURI();

        }

        return null;

    }

    @Override

    public FLayer getLayer() {

        return _layer;

    }

    @Override

    public void setLayer(FLayer layer) throws IncompatibleLayerException {

        try {

            _layer = (FLyrVect) layer;

        } catch (ClassCastException ex) {

            throw new IncompatibleLayerException(ex);

        }

    }

    public Object create() {

        return this;

    }

    public Object create(Object[] args) {

        return this;

    }

    public Object create(Map args) {

        return this;

    }

//    public URI[][] getLink(Point2D point,

//        double tolerance,

//        String[] fieldName,

//        String fileExtension) {

//        FLyrVect lyrVect = (FLyrVect) _layer;

//        FeatureSet features;

//        FeatureType featureType;

//        URI uri[][] = null;

//

//        try {

//            // FIXME: Habr? que ver como lo hacemos con las capas multigeometr?a

//            featureType = _layer.getFeatureStore().getDefaultFeatureType();

//            features = lyrVect.queryByPoint(point, tolerance, featureType);

//        } catch (Exception e) {

//            return null;

//        }

//

//        // Si el conjunto creado no est? vac?o creamos el vector de URLS

//        // correspondientes

//        // a la consulta que hemos hecho.

//

//        if (features != null) {

//            try {

//                // Creo el vector de URL?s con la misma longitud que features

//                uri = new URI[(int) features.getSize()][fieldName.length];

//

//                // Recorremos las features siguiendo el ejemplo de la clase que

//                // se

//                // proporciona en la API

//                int count = 0;

//                DisposableIterator it = features.fastIterator();

//                while (it.hasNext()) {

//                    Feature feat = (Feature) it.next();

//                    for (int fieldCount = 0; fieldCount < fieldName.length; fieldCount++) {

//                        // get the field ID using the field name

//                        String auxField =

//                            feat.get(fieldName[fieldCount]).toString();

//                        if (auxField != null) {

//                            if (auxField.startsWith("http:/")) {

//                                try {

//                                    uri[count][fieldCount] = new URI(auxField);

//                                } catch (URISyntaxException e) {

//                                    PluginServices.getLogger().error("", e);

//                                }

//                            } else {

//                                File file = new File(auxField);

//                                uri[count][fieldCount] = file.toURI();

//                            }

//                        } else {

//                            PluginServices.getLogger()

//                                .error("Hyperlink error. Field "

//                                    + fieldName[fieldCount] + "doesn't exist!!");

//                            uri[count][fieldCount] = null;

//                        }

//                    }

//                    count++;

//                }

//                it.dispose();

//

//                return uri;

//            } catch (DataException e) {

//                PluginServices.getLogger().error("", e);

//            }

//        }

//        return new URI[0][0];

//    }

    @Override

    public String[] getFieldCandidates() {

        try {

            FeatureType featureType =

                _layer.getFeatureStore().getDefaultFeatureType();

            ArrayList<String> fields = new ArrayList<String>();

            FeatureAttributeDescriptor[] descriptors =

                featureType.getAttributeDescriptors();

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

                FeatureAttributeDescriptor descriptor = descriptors[i];

                if (  !(descriptor.getDataType().isObject() || 

                    descriptor.getDataType().getType() == DataTypes.GEOMETRY) ) {

                    fields.add(descriptor.getName());

                }

            }

            return (String[]) fields.toArray(new String[0]);

        } catch (DataException e) {

            NotificationManager.addError(PluginServices.getText(this,

                "Error_reading_layer_fields"), e);

        }

        return new String[0];

    }

}