Application: gvSIG desktop » Library: org.gvsig.tools

/* 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.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2010 Institute of New Imaging Technologies (INIT): 

 *   http://www.init.uji.es

 * Geographic Information research group: 

 *   http://www.geoinfo.uji.es

 * Universitat Jaume I, Spain

 */

/**

 * 

 */

package org.gvsig.tools.swing.components.file;

import java.io.File;

import java.util.ArrayList;

import java.util.List;

import javax.swing.ImageIcon;

import javax.swing.filechooser.FileFilter;

import org.gvsig.tools.dataTypes.DataTypes;

import org.gvsig.tools.swing.api.ComponentService;

import org.gvsig.tools.swing.components.DefaultResultListenersHandler;

import org.gvsig.tools.swing.components.ResultListener;

import org.gvsig.tools.swing.components.ResultProvider;

import org.gvsig.tools.swing.serv.field.ToolsSwingDefaultFieldImplLibrary;

import org.gvsig.tools.swing.serv.field.listener.AddItem;

/**

 * @author <a href="mailto:reinhold@uji.es">cmartin</a>

 * 

 */

public class JFileChooser implements ResultProvider, AddItem {

    private class JFileFilter extends FileFilter {

        public JFileFilter(String[] extensions) {

            this.seExtensiontList(extensions);

        }

        /*

         * (non-Javadoc)

         * 

         * @see javax.swing.filechooser.FileFilter#accept(java.io.File)

         */

        @Override

        public boolean accept(File f) {

            // int type =fc.getFileSelectionMode();

            //

            // if ((type==DIRECTORIES_ONLY)||(type==FILES_AND_DIRECTORIES))

            // if (f.isDirectory())

            // return true;

            if (f.isDirectory())

                return true;

            String extension = this.getExtension(f);

            if ((extension != null) && (!extensions.isEmpty())) {

                for (String ext : extensions)

                    if (extension.equals(ext))

                        return true;

            }

            return false;

        }

        /*

         * (non-Javadoc)

         * 

         * @see javax.swing.filechooser.FileFilter#getDescription()

         */

        @Override

        public String getDescription() {

            // TODO Auto-generated method stub

            return null;

        }

        /*

         * Get the extension of a file.

         */

        private String getExtension(File f) {

            String ext = null;

            String s = f.getName();

            int i = s.lastIndexOf('.');

            if ((i > 0) && (i < s.length() - 1)) {

                ext = s.substring(i + 1).toLowerCase();

            }

            return ext;

        }

        private void seExtensiontList(String[] extensions) {

            if (extensions == null)

                return;

            for (String extension : extensions) {

                JFileChooser.this.getExtensions().add(extension);

            }

        }

    }

    public static final int DIRECTORIES_ONLY =

        javax.swing.JFileChooser.DIRECTORIES_ONLY;

    public static final int FILES_AND_DIRECTORIES =

        javax.swing.JFileChooser.FILES_AND_DIRECTORIES;

    private static final String ACCEPT_BUTTON = null;

    /** Returns an ImageIcon, or null if the path was invalid. */

    protected static ImageIcon createImageIcon(String path) {

        java.net.URL imgURL =

            ToolsSwingDefaultFieldImplLibrary.class.getResource(path);

        if (imgURL != null) {

            return new ImageIcon(imgURL);

        } else {

            System.err.println("Couldn't find file: " + path);

            return null;

        }

    }

    // Create a file chooser

    private javax.swing.JFileChooser fc = null;

    private javax.swing.JComponent panel = null;

    protected List<String> extensions;

    private final DefaultResultListenersHandler listener;

    public JFileChooser(int type) {

        this(type, null);

    }

    public JFileChooser(int type, String[] extensionsFilter) {

        fc = new javax.swing.JFileChooser();

        listener = new DefaultResultListenersHandler();

        extensions = new ArrayList<String>();

        // By default FILES_ONLY.

        if (type == DataTypes.FOLDER)

            fc.setFileSelectionMode(javax.swing.JFileChooser.DIRECTORIES_ONLY);

        // else

        // fc.setFileSelectionMode(javax.swing.JFileChooser.FILES_AND_DIRECTORIES);

        if (extensionsFilter != null)

            fc.addChoosableFileFilter(new JFileFilter(extensionsFilter));

    }

    public AddItem add(String extension) {

        if (extension != null)

            extensions.add(extension);

        return this;

    }

    public void addResultListener(ResultListener listener) {

        this.listener.add(listener);

    }

    public void alignToField(ComponentService comp) {

        panel = (javax.swing.JComponent) comp.asJComponent();

        // this.field = comp.getDynField();

    }

    /*

     * (non-Javadoc)

     * 

     * @see org.gvsig.tools.swing.components.ResultProvider#fireResultEvent(int,

     * java.lang.Object)

     */

    public void fireResultEvent(int resultVal, Object value) {

        listener.fireResultEvent(resultVal, value);

    }

    /**

     * @return

     */

    public List<String> getExtensions() {

        return extensions;

    }

    /**

     * @return

     */

    private int getReturnVal(int returnVal) {

        switch (returnVal) {

        case javax.swing.JFileChooser.APPROVE_OPTION:

            return RETURN_OK;

        case javax.swing.JFileChooser.CANCEL_OPTION:

            return RETURN_CANCEL;

        default:

            return RETURN_ERROR;

        }

    }

    /**

     * @return

     */

    private Object getReturnValue() {

        if (fc != null)

            return fc.getSelectedFile();

        return null;

    }

    public void setApproveButtonText() {

        fc.setApproveButtonText(ACCEPT_BUTTON);

    }

    public void showDialog() {

        int returnVal = fc.showOpenDialog(panel);

        if (listener != null) {

            this.fireResultEvent(this.getReturnVal(returnVal), this

                .getReturnValue());

        }

    }

}