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

 */

/* CVS MESSAGES:

*

* $Id: LayerTree.java 3746 2006-01-24 14:40:18Z jaume $

* $Log$

* Revision 1.2  2006-01-24 14:36:33  jaume

* This is the new version

*

* Revision 1.1.2.1  2006/01/17 12:56:03  jaume

* *** empty log message ***

*

*

*/

/**

 * 

 */

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

import java.awt.Component;

import javax.swing.JToolTip;

import javax.swing.JTree;

import javax.swing.ToolTipManager;

import javax.swing.tree.DefaultTreeCellRenderer;

import com.iver.andami.PluginServices;

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

import com.iver.cit.gvsig.gui.beans.controls.MultiLineToolTip;

/**

 * LayerTree extends the standard JTree class to allow use custom tooltips.

 * It is just JTree containing WMSLayerNode at its nodes.

 * 

 * @author jaume

 *

 */

public class LayerTree extends JTree {

    public LayerTree(){

        super();

        ToolTipManager.sharedInstance().registerComponent(this);

        ToolTipManager.sharedInstance().setDismissDelay(60*1000);

        setCellRenderer(new MyRenderer());

    }

    /**

     * Layer tree specific renderer allowing to show multiple line

     * tooltips 

     * @author jaume

     *

     */

    private class MyRenderer extends DefaultTreeCellRenderer {

        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) {

            super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);

            if (value instanceof WMSLayerNode){

                WMSLayerNode layer = (WMSLayerNode) value;

                String myLatLonTxt = layer.getLatLonBox();

                if (myLatLonTxt == null)

                    myLatLonTxt = "-";

                String myAbstract = layer.getAbstract();

                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" + myLatLonTxt;

                setToolTipText(text);

            } else {

                setToolTipText(null);

            }

            return this;

        }

    }

    /**

     * 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;

    }

    public JToolTip createToolTip() {

        MultiLineToolTip tip = new MultiLineToolTip();

        tip.setComponent(this);

        return tip;

      }

}