Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.gui.panels;

import java.awt.Component;

import java.awt.Dimension;

import javax.swing.DefaultListCellRenderer;

import javax.swing.JList;

import javax.swing.JToolTip;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.layers.WCSLayer;

/**

 * Class implementing a JList component adapted to the WCSLayer needs, such as a

 * multiline tooltip.

 * 

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 * 

 */

public class LayerList extends JList {

        public boolean showLayerNames = false;

        private int count = 0;

        public LayerList() {

                super();

                setCellRenderer(new MyRenderer());

        }

        private class MyRenderer extends DefaultListCellRenderer {

                public Component getListCellRendererComponent(JList list, Object value,

                                int index, boolean isSelected, boolean cellHasFocus) {

                        super.getListCellRendererComponent(list, value, index, isSelected,

                                        cellHasFocus);

                        if (value instanceof WCSLayer) {

                                WCSLayer layer = (WCSLayer) value;

                                if (!showLayerNames) {

                                        if (layer.getName() != null || layer.getName() == "") {

                                                String text = layer.toString();

                                                text = text.substring(text.indexOf(']') + 2, text

                                                                .length());

                                                setText(text);

                                        }

                                }

                                String myAbstract = layer.getDescription();

                                String myLonLatTxt = layer.getLonLatEnvelope();

                if (myAbstract == null)

                    myAbstract = "-";

                else 

                    myAbstract = format(myAbstract.trim(), 100);

                                String text = PluginServices.getText(this, "abstract") + ":\n"

                                                + myAbstract + "\n\n"

                                                + PluginServices.getText(this, "covered_extension")

                                                + ":\n" + myLonLatTxt;

                                setToolTipText(text);

                                Dimension sz = getPreferredSize();

                                sz.setSize((sz.getWidth() + 50) - (50 * count), sz.getHeight());

                                setPreferredSize(sz);

                                count++;

                        }

                        return this;

                }

        }

        // public JToolTip createToolTip() {

        // MultiLineToolTip tip = new MultiLineToolTip();

        // tip.setComponent(this);

        // return tip;

        // }

        /**

         * Cuts the message text to force its lines to be shorter or equal to

         * lineLength.

         * 

         * @param message,

         *            the message.

         * @param lineLength,

         *            the max line length in number of characters.

         * @return the formated message.

         */

        public static String format(String message, int lineLength) {

                if (message.length() <= lineLength)

                        return message;

                String[] lines = message.split("\n");

                String theMessage = "";

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

                        String line = lines[i].trim();

                        if (line.length() < lineLength)

                                theMessage += line + "\n";

                        else {

                                String[] chunks = line.split(" ");

                                String newLine = "";

                                for (int j = 0; j < chunks.length; j++) {

                                        int currentLength = newLine.length();

                                        chunks[j] = chunks[j].trim();

                                        if (chunks[j].length() == 0)

                                                continue;

                                        if ((currentLength + chunks[j].length() + " ".length()) <= lineLength)

                                                newLine += chunks[j] + " ";

                                        else {

                                                newLine += "\n" + chunks[j] + " ";

                                                theMessage += newLine;

                                                newLine = "";

                                        }

                                }

                        }

                }

                return theMessage;

        }

}