Application: gvSIG desktop » gvSIG projections

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package org.gvsig.crs.preferences;

import java.awt.BorderLayout;

import java.io.File;

import java.util.Collection;

import java.util.Iterator;

import javax.swing.DefaultListModel;

import javax.swing.ImageIcon;

import javax.swing.JPanel;

import org.apache.commons.io.FileUtils;

import org.apache.commons.io.FilenameUtils;

import org.apache.commons.lang3.BooleanUtils;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.PluginsLocator;

import org.gvsig.andami.PluginsManager;

import org.gvsig.andami.preferences.AbstractPreferencePage;

import org.gvsig.andami.preferences.StoreException;

import org.gvsig.crs.CrsFactory;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.exception.BaseException;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.packageutils.PackageInfo;

import org.gvsig.tools.packageutils.PackageManager;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 *

 * @author usuario

 */

public class JCRSPreferencesPage extends AbstractPreferencePage {

    private static final Logger logger = LoggerFactory.getLogger(JCRSPreferencesPage.class);

    private static final long serialVersionUID = -7838901334080793221L;

    private JCRSPreferencesPanel preferences;

    private DynObject pluginProperties;

    private PluginServices plugin;

    private class ListItem {

        private PackageInfo pkg;

        private File epsgFile;

        ListItem(PackageInfo pkg, File epsgFile) {

            this.pkg = pkg;

            this.epsgFile = epsgFile;

        }

        public File getEPSGFile() {

            return this.epsgFile;

        }

        public PackageInfo getPackageInfo() {

            return this.pkg;

        }

        public String toString() {

            return this.pkg.getName();

        }

    }

    public JCRSPreferencesPage() {

        initComponents();

    }

    private void initComponents() {

        I18nManager i18nManager = ToolsLocator.getI18nManager();

        PluginsManager pluginManager = PluginsLocator.getManager();

        this.plugin = pluginManager.getPlugin(this);

        this.pluginProperties = this.plugin.getPluginProperties();

        this.preferences = new JCRSPreferencesPanel();

        this.preferences.lblHeader.setText( 

                i18nManager.getTranslation("_Select_the_EPSG_data_base_to_use")

        );

        this.setLayout(new BorderLayout());

        this.add(this.preferences, BorderLayout.NORTH);

        initializeValues();

    }

    public void storeValues() throws StoreException {

        ListItem item = (ListItem) this.preferences.lstBBDD.getSelectedValue();

        if( item == null ) {

            return;

        }

        this.pluginProperties.setDynValue("epsgDatabase", item.getEPSGFile());

        this.pluginProperties.setDynValue("useMemoryCacheForCRSs", 

                new Boolean(this.preferences.chkUseMomoryChacheForCRSs.isSelected())

        );

        this.plugin.savePluginProperties();

    }

    public void setChangesApplied() {

        // ????

    }

    public String getID() {

        return getClass().getName();

    }

    public String getTitle() {

        I18nManager i18nManager = ToolsLocator.getI18nManager();

        return i18nManager.getTranslation("jCRS_preferences");

    }

    public JPanel getPanel() {

        return this;

    }

    public void initializeValues() {

        PackageManager pkgManager = ToolsLocator.getPackageManager();

        File dbfolder = CrsFactory.getDataBaseFolder();

        File epsgFolders = new File(dbfolder,"EPSG");

        Collection<File> files = FileUtils.listFiles(epsgFolders, new String[]{"info"}, true);

        DefaultListModel<ListItem> model = new DefaultListModel<ListItem>();

        File currentEPSG = getCurrentEPSG();

        int selectedOption = 0;

        int n = 0;

        Iterator<File> it = files.iterator();

        while( it.hasNext() ) {

            File f = it.next();

            if( f.getName().equals("package.info") ) {

                try {

                    PackageInfo pkginfo = pkgManager.createPackageInfo(f);

                    File epsgdb = new File(f.getParentFile(),"EPSG.sql");

                    epsgdb = makeRelative(dbfolder, epsgdb);

                    model.addElement(new ListItem(pkginfo, epsgdb));

                    if( epsgdb.equals(currentEPSG) ) {

                        selectedOption = n;

                    }

                    n++;

                } catch (BaseException ex) {

                    logger.warn("Can't load package information from '"+f.getAbsolutePath()+"'.",ex);

                }

            }

        }

        this.preferences.lstBBDD.setModel(model);

        this.preferences.lstBBDD.setSelectedIndex(selectedOption);

        boolean currentUseChacheForCRSs = BooleanUtils.isTrue(

                (Boolean) this.pluginProperties.getDynValue("useMemoryCacheForCRSs")

        );

        this.preferences.chkUseMomoryChacheForCRSs.setSelected(currentUseChacheForCRSs);

    }

    private File makeRelative(File parent, File file) {

        String parent_path = parent.getAbsolutePath();

        if( !parent_path.endsWith(File.separator) ) {

            parent_path += File.separator;

        }

        if( file.getAbsolutePath().startsWith(parent_path) ) {

            file = new File(file.getAbsolutePath().substring(parent_path.length()));

        }

        return file;

    }

    private File getCurrentEPSG() {

        File dbfolder = CrsFactory.getDataBaseFolder();

        File currentEPSG = null;

        String s = StringUtils.defaultIfBlank((String) this.pluginProperties.getDynValue("epsgDatabase"),null);

        if( s!=null ) {

            currentEPSG = new File(s);    

            if( !currentEPSG.isAbsolute() ) {

                currentEPSG = new File(dbfolder,s);    

            }

            currentEPSG = makeRelative(dbfolder,currentEPSG);

        }

        return currentEPSG;

    }

    public void initializeDefaults() {

    }

    public ImageIcon getIcon() {

        return IconThemeHelper.getImageIcon("jcrs-preferences");

    }

    public boolean isValueChanged() {

        File currentEPSG = this.getCurrentEPSG();

        ListItem item = (ListItem) this.preferences.lstBBDD.getSelectedValue();

        if( item == null ) {

            return false;

        }

        boolean changed = ! currentEPSG.equals(item.getEPSGFile());

        if( !changed ) {

            boolean currentUseChacheForCRSs = BooleanUtils.isTrue(

                (Boolean) this.pluginProperties.getDynValue("useMemoryCacheForCRSs")

            );

            if( this.preferences.chkUseMomoryChacheForCRSs.isSelected()!=currentUseChacheForCRSs ) {

                changed = true;

            }

        }

        return changed;

    }

    public boolean isResizeable() {

        return true;

    }

}