Application: gvSIG desktop

/*

 * Created on 13-may-2004

 *

 * To change the template for this generated file go to

 * Window>Preferences>Java>Code Generation>Code and Comments

 */

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

 *

 * Copyright (C) 2004 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.toc;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.AtomicEvent;

import com.iver.cit.gvsig.fmap.AtomicEventListener;

import com.iver.cit.gvsig.fmap.DriverException;

import com.iver.cit.gvsig.fmap.FMap;

import com.iver.cit.gvsig.fmap.core.v02.FSymbol;

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

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

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

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

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

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

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

import com.iver.cit.gvsig.fmap.layers.layerOperations.Classifiable;

import com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection;

import com.iver.cit.gvsig.fmap.rendering.ClassifiedLegendInfo;

import com.iver.cit.gvsig.fmap.rendering.Legend;

import com.iver.cit.gvsig.fmap.rendering.LegendChangedEvent;

import com.iver.cit.gvsig.fmap.rendering.SingleSymbolLegend;

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ComponentEvent;

import java.awt.event.ComponentListener;

import java.awt.event.InputEvent;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.util.Enumeration;

import java.util.HashMap;

import javax.swing.BorderFactory;

import javax.swing.JColorChooser;

import javax.swing.JComponent;

import javax.swing.JDialog;

import javax.swing.JScrollPane;

import javax.swing.JTree;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import javax.swing.event.TreeExpansionEvent;

import javax.swing.event.TreeExpansionListener;

import javax.swing.tree.DefaultMutableTreeNode;

import javax.swing.tree.DefaultTreeModel;

import javax.swing.tree.TreePath;

import javax.swing.tree.TreeSelectionModel;

/**

 * DOCUMENT ME!

 *

 * @author fjp To change the template for this generated type comment go to

 *         Window>Preferences>Java>Code Generation>Code and

 *         Comments

 */

public class TOC extends JComponent implements ITocOrderListener,

    LegendListener, LayerCollectionListener, TreeExpansionListener,

    ComponentListener {

    private FMap mapContext;

    private DnDJTree m_Tree;

    private DefaultTreeModel m_TreeModel;

    private DefaultMutableTreeNode m_Root;

    private TOCRenderer m_TocRenderer;

    private JScrollPane m_Scroller;

    //private ArrayList m_Listeners;

    private HashMap m_ItemsExpanded = new HashMap();

    private NodeSelectionListener nodeSelectionListener = null;

    /**

     * Crea un nuevo TOC.

     */

    public TOC() {

        this.setLayout(new BorderLayout());

        this.setMinimumSize(new Dimension(100, 80));

        this.setPreferredSize(new Dimension(100, 80));

        //Construct the tree.

        m_Root = new DefaultMutableTreeNode(java.lang.Object.class);

        m_TreeModel = new DefaultTreeModel(m_Root);

        m_Tree = new DnDJTree(m_TreeModel);

        m_TocRenderer = new TOCRenderer();

        m_Tree.setCellRenderer(m_TocRenderer);

        m_Tree.setRootVisible(false);

        // m_Tree.setExpandsSelectedPaths(true);

        // m_Tree.setAutoscrolls(true);

        m_Tree.setShowsRootHandles(true);

        //Posibilidad de seleccionar de forma aleatoria nodos de la leyenda.

        m_Tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);

        nodeSelectionListener=new NodeSelectionListener(m_Tree);

        m_Tree.addMouseListener(nodeSelectionListener);

        m_Tree.setBackground(UIManager.getColor("Button.background"));

        m_Tree.setBorder(BorderFactory.createEtchedBorder());

        this.addComponentListener(this);

        m_Tree.addTreeExpansionListener(this);

        m_Tree.addOrderListener(this);

        m_Tree.setRowHeight(0); // Para que lo determine el renderer

        m_Scroller = new JScrollPane(m_Tree);

        m_Scroller.setBorder(BorderFactory.createEmptyBorder());

        // scrollPane.setPreferredSize(new Dimension(80,80));

        //Add everything to this panel.

        /* GridBagLayout gridbag = new GridBagLayout();

           GridBagConstraints c = new GridBagConstraints();

           setLayout(gridbag);

           c.fill = GridBagConstraints.BOTH;

           c.weightx = 1.0;

           gridbag.setConstraints(check,c); */

        add(m_Scroller); //, BorderLayout.WEST);

        //                refresh();

    }

    /**

     * Elimina los listeners que actuan sobre el TOC, lo ?nico que deja hacer

     * es desplegar la leyenda de las capas.

     */

    public void removeListeners() {

        m_Tree.removeMouseListener(nodeSelectionListener);

        m_Tree.invalidateListeners();

    }

    /**

     * Inserta el FMap.

     *

     * @param mc FMap.

     */

    public void setMapContext(FMap mc) {

        mapContext = mc;

        mapContext.addAtomicEventListener(new AtomicEventListener() {

                /**

                 * @see com.iver.cit.gvsig.fmap.AtomicEventListener#atomicEvent(com.iver.cit.gvsig.fmap.AtomicEvent)

                 */

                public void atomicEvent(AtomicEvent e) {

                    if ((e.getLayerCollectionEvents().length > 0) ||

                            (e.getLegendEvents().length > 0)) {

                        SwingUtilities.invokeLater(new Runnable() {

                                public void run() {

                                    refresh();

                                }

                            });

                    }

                    if (e.getLayerEvents().length > 0) {

                        repaint();

                    }

                    if (e.getExtentEvents().length > 0) {

                        repaint();

                    }

                }

            });

        SwingUtilities.invokeLater(new Runnable() {

                public void run() {

                    refresh();

                }

            });

    }

    /**

     * DOCUMENT ME!

     */

    private void setExpandedNodes() {

        //int i = 0;

        // Las claves sobrantes de m_ItemsExpanded (provocadas

        // por layerRemove, se quitan en el evento layerRemoved

        // de este TOC

        DefaultMutableTreeNode n;

        Enumeration enumeration = m_Root.children();

        while (enumeration.hasMoreElements()) {

            n = (DefaultMutableTreeNode) enumeration.nextElement();

            TreePath path = new TreePath(m_TreeModel.getPathToRoot(n));

            ITocItem item = (ITocItem) n.getUserObject();

            Boolean b = (Boolean) m_ItemsExpanded.get(item.getLabel());

            if (b == null) // No estaba en el hash todav?a: valor por defecto

             {

                // System.out.println("Primera expansi?n de " + item.getLabel());

                m_Tree.expandPath(path);

                return;

            }

            if (b.booleanValue()) {

                // System.out.println("Expansi?n de " + item.getLabel());

                m_Tree.expandPath(path);

            } else {

                // System.out.println("Colapso de " + item.getLabel());

                m_Tree.collapsePath(path);

            }

        }

    }

    /* (non-Javadoc)

     * @see com.iver.cit.opensig.gui.IToc#refresh()

     */

    public void refresh() {

        LayerCollection theLayers = mapContext.getLayers();

        m_Root.removeAllChildren();

        m_Root.setAllowsChildren(true);

        System.out.println("Refresh del toc");

        doRefresh(theLayers, m_Root);

        m_TreeModel.reload();

        setExpandedNodes();

    }

    /**

     * DOCUMENT ME!

     *

     * @param theLayers DOCUMENT ME!

     * @param parentNode DOCUMENT ME!

     */

    private void doRefresh(LayerCollection theLayers,

        DefaultMutableTreeNode parentNode) {

        Dimension sizeLeaf = new Dimension(m_Tree.getWidth(), 15);

        Dimension sizeBranch = new Dimension(m_Tree.getWidth(), 25);

        for (int i = theLayers.getLayersCount() - 1; i >= 0; i--) {

            FLayer lyr = theLayers.getLayer(i);

            TocItemBranch elTema = new TocItemBranch(lyr);

            elTema.setSize(sizeBranch);

            DefaultMutableTreeNode nodeLayer = new DefaultMutableTreeNode(elTema);

            m_TreeModel.insertNodeInto(nodeLayer, parentNode,

                parentNode.getChildCount());

            //TreePath path = new TreePath(m_TreeModel.getPathToRoot(nodeLayer));

            // m_Tree.makeVisible(path);

            if (lyr instanceof LayerCollection) {

                LayerCollection group = (LayerCollection) lyr;

                doRefresh(group, nodeLayer);

            } else {

                if (lyr instanceof Classifiable) {

                    Classifiable aux = (Classifiable) lyr;

                    Legend legendInfo = aux.getLegend();

                    try {

                        if (legendInfo instanceof ClassifiedLegendInfo) {

                            ClassifiedLegendInfo cl = (ClassifiedLegendInfo) legendInfo;

                            String[] descriptions = cl.getDescriptions();

                            FSymbol[] symbols = cl.getSymbols();

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

                                TocItemLeaf itemLeaf;

                                itemLeaf = new TocItemLeaf(symbols[j],

                                        descriptions[j], aux.getShapeType());

                                itemLeaf.setSize(sizeLeaf);

                                DefaultMutableTreeNode nodeValue = new DefaultMutableTreeNode(itemLeaf);

                                m_TreeModel.insertNodeInto(nodeValue,

                                    nodeLayer, nodeLayer.getChildCount());

                                //TreePath pathSymbol = new TreePath(m_TreeModel.getPathToRoot(

                                //                        nodeValue));

                                // m_Tree.makeVisible(pathSymbol);                                                        

                            }

                        }

                        if (legendInfo instanceof SingleSymbolLegend &&

                                (legendInfo.getDefaultSymbol() != null)) {

                            TocItemLeaf itemLeaf;

                            itemLeaf = new TocItemLeaf(legendInfo.getDefaultSymbol(),

                                    "Default", aux.getShapeType());

                            itemLeaf.setSize(sizeLeaf);

                            DefaultMutableTreeNode nodeValue = new DefaultMutableTreeNode(itemLeaf);

                            m_TreeModel.insertNodeInto(nodeValue, nodeLayer,

                                nodeLayer.getChildCount());

                            //TreePath pathSymbol = new TreePath(m_TreeModel.getPathToRoot(

                            //                        nodeValue));

                            // m_Tree.makeVisible(pathSymbol);

                        }

                    } catch (DriverException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                    }

                }

            } // if instanceof layers

        }

    }

    /**

     * @see com.iver.cit.opensig.gui.toc.ITocOrderListener#orderChanged(int,

     *      int)

     */

    public void orderChanged(int oldPos, int newPos, FLayers lpd) {

        //LayerCollection layers = mapContext.getLayers();

        // El orden es el contrario, hay que traducir.

        // El orden es el contrario, hay que traducir.

        ///oldPos = layers.getLayersCount() - 1 - oldPos;

        ///newPos = layers.getLayersCount() - 1 - newPos;

        try {

            lpd.moveTo(oldPos, newPos);

        } catch (CancelationException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        // No hace falta un refresh, lo hace mediante eventos.

        //refresh();

        mapContext.invalidate();

    }

    /**

     * DOCUMENT ME!

     *

     * @param lpo DOCUMENT ME!

     * @param lpd DOCUMENT ME!

     * @param ls DOCUMENT ME!

     */

    public void parentChanged(FLayers lpo, FLayers lpd, FLayer ls) {

        lpo.removeLayer(ls);

        lpd.addLayer(ls);

        /*if (lpo.getLayersCount()==0){

           lpo.getParentLayer().removeLayer(lpo);

           }*/

        mapContext.invalidate();

    }

    /* (non-Javadoc)

     * @see java.awt.event.ComponentListener#componentHidden(java.awt.event.ComponentEvent)

     */

    public void componentHidden(ComponentEvent e) {

    }

    /* (non-Javadoc)

     * @see java.awt.event.ComponentListener#componentMoved(java.awt.event.ComponentEvent)

     */

    public void componentMoved(ComponentEvent e) {

    }

    /* (non-Javadoc)

     * @see java.awt.event.ComponentListener#componentResized(java.awt.event.ComponentEvent)

     */

    public void componentResized(ComponentEvent e) {

        System.out.println("Cambiando tama?o.");

        int i = 0;

        DefaultMutableTreeNode n;

        Enumeration enumeration = m_Root.children();

        while (enumeration.hasMoreElements()) {

            n = (DefaultMutableTreeNode) enumeration.nextElement();

            if (n.getUserObject() instanceof TocItemBranch) {

                ITocItem item = (ITocItem) n.getUserObject();

                Dimension szAnt = item.getSize();

                item.setSize(new Dimension(this.getWidth() - 40, szAnt.height));

            }

            System.out.println("i=" + i++);

        }

        // m_Tree.setSize(this.getSize());

        System.out.println("Ancho del tree=" + m_Tree.getWidth() + " " +

            m_Tree.getComponentCount());

        System.out.println("Ancho del TOC=" + this.getWidth());

        // m_Tree.repaint();

    }

    /* (non-Javadoc)

     * @see java.awt.event.ComponentListener#componentShown(java.awt.event.ComponentEvent)

     */

    public void componentShown(ComponentEvent e) {

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerListener#legendChanged(com.iver.cit.gvsig.fmap.rendering.LegendChangedEvent)

     */

    public void legendChanged(LegendChangedEvent e) {

        System.out.println("Refrescando TOC");

        refresh();

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerAdded(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

     */

    public void layerAdded(LayerCollectionEvent e) {

        refresh();

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerMoved(com.iver.cit.gvsig.fmap.layers.LayerPositionEvent)

     */

    public void layerMoved(LayerPositionEvent e) {

        refresh();

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerRemoved(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

     */

    public void layerRemoved(LayerCollectionEvent e) {

        m_ItemsExpanded.remove(e.getAffectedLayer().getName());

        refresh();

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerAdding(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

     */

    public void layerAdding(LayerCollectionEvent e) throws CancelationException {

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerMoving(com.iver.cit.gvsig.fmap.layers.LayerPositionEvent)

     */

    public void layerMoving(LayerPositionEvent e) throws CancelationException {

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#layerRemoving(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

     */

    public void layerRemoving(LayerCollectionEvent e)

        throws CancelationException {

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#activationChanged(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

     */

    public void activationChanged(LayerCollectionEvent e)

        throws CancelationException {

        repaint();

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.LayerCollectionListener#visibilityChanged(com.iver.cit.gvsig.fmap.layers.LayerCollectionEvent)

     */

    public void visibilityChanged(LayerCollectionEvent e)

        throws CancelationException {

        repaint();

    }

    /* (non-Javadoc)

     * @see javax.swing.event.TreeExpansionListener#treeCollapsed(javax.swing.event.TreeExpansionEvent)

     */

    public void treeCollapsed(TreeExpansionEvent event) {

        TreePath path = event.getPath();

        DefaultMutableTreeNode n = (DefaultMutableTreeNode) path.getLastPathComponent();

        if (n.getUserObject() instanceof ITocItem) {

            ITocItem item = (ITocItem) n.getUserObject();

            Boolean b = Boolean.FALSE;

            // System.out.println("Collapsed: " + item.getLabel());

            m_ItemsExpanded.put(item.getLabel(), b);

        }

    }

    /* (non-Javadoc)

     * @see javax.swing.event.TreeExpansionListener#treeExpanded(javax.swing.event.TreeExpansionEvent)

     */

    public void treeExpanded(TreeExpansionEvent event) {

        TreePath path = event.getPath();

        DefaultMutableTreeNode n = (DefaultMutableTreeNode) path.getLastPathComponent();

        if (n.getUserObject() instanceof ITocItem) {

            ITocItem item = (ITocItem) n.getUserObject();

            Boolean b = Boolean.TRUE;

            // System.out.println("Expanded: " + item.getLabel());

            m_ItemsExpanded.put(item.getLabel(), b);

        }

    }

    /**

     * Obtiene el JScrollPane que contiene el TOC

     *

     * @return JScrollPane que contiene el TOC

     */

    public JScrollPane getJScrollPane() {

        return this.m_Scroller;

    }

    /**

     * DOCUMENT ME!

     *

     * @return DOCUMENT ME!

     */

    public DnDJTree getTree() {

        return m_Tree;

    }

    /**

     * Clase Listener que reacciona al pulsar sobre el checkbox de un nodo y

     * crea un popupmenu al pulsar el bot?n derecho.

     */

    class NodeSelectionListener extends MouseAdapter implements ActionListener {

        JTree tree;

        JDialog dlg;

        JColorChooser colorChooser;

        FPopupMenu popmenu = null;

        /**

         * Crea un nuevo NodeSelectionListener.

         *

         * @param tree DOCUMENT ME!

         */

        NodeSelectionListener(JTree tree) {

            this.tree = tree;

        }

        /**

         * DOCUMENT ME!

         *

         * @param e DOCUMENT ME!

         */

        public void mouseClicked(MouseEvent e) {

            int x = e.getX();

            int y = e.getY();

            int row = tree.getRowForLocation(x, y);

            TreePath path = tree.getPathForRow(row);

            LayerCollection layers = mapContext.getLayers();

            // System.out.println(e.getSource());

            if (path != null) {

                DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();

                // System.out.println("Evento de rat?n originado por " + e.getSource().getClass().toString());

                if (node.getUserObject() instanceof TocItemBranch) {

                    TocItemBranch elTema = (TocItemBranch) node.getUserObject();

                    FLayer lyr = elTema.getLayer();

                    lyr.getFMap().beginAtomicEvent();

                    //if (e.getButton()==MouseEvent.BUTTON1){

                    // Si tenemos may?sculas apretadas es que queremos activar m?s temas.

                    // Si no, primero desactivamos temas

                    if (!((e.getModifiers() & InputEvent.SHIFT_MASK) != 0) &&

                            (e.getButton() == MouseEvent.BUTTON1)) {

                        layers.setAllActives(false);

                    }

                    if (e.getButton() == MouseEvent.BUTTON1) {

                        //lyr.setActive(true);

                        updateActive(lyr, !lyr.isActive());

                    } else {

                        /*if (!((e.getModifiers() & InputEvent.SHIFT_MASK) != 0) && e.getButton()==MouseEvent.BUTTON3) {

                           layers.setAllActives(false);

                           }

                           updateActive(lyr,true);

                         */

                    }

                    // Si pertenece a un grupo, lo ponemos activo tambi?n.

                    //FLayer parentLayer = lyr.getParentLayer();

                    /*if (parentLayer != null) {

                       parentLayer.setActive(true);

                       }*/

                    Point layerNodeLocation = tree.getUI()

                                                  .getPathBounds(tree, path)

                                                  .getLocation();

                    //Rect?ngulo que representa el checkbox

                    Rectangle checkBoxBounds = m_TocRenderer.getCheckBoxBounds();

                    checkBoxBounds.translate((int) layerNodeLocation.getX(),

                        (int) layerNodeLocation.getY());

                    if (checkBoxBounds.contains(e.getPoint())) {

                        updateVisible(lyr);

                    }

                    //}

                    if ((e.getButton() == MouseEvent.BUTTON3) &&

                            (layers.getActives().length > 0)) {

                        //Boton derecho sobre un nodo del arbol

                        //if ((e.getModifiers() & InputEvent.META_MASK) != 0) {

                        popmenu = new FPopupMenu(mapContext, node);

                        tree.add(popmenu);

                        //System.out.println("boton derecho");

                        popmenu.show(e.getComponent(), e.getX(), e.getY());

                        //}

                    }

                    lyr.getFMap().endAtomicEvent();

                }

                if (node.getUserObject() instanceof TocItemLeaf) {

                    //Boton derecho sobre un Simbolo

                    //TocItemLeaf auxLeaf = (TocItemLeaf) node.getUserObject();

                    //FSymbol theSym = auxLeaf.getSymbol();

                    if ((e.getModifiers() & InputEvent.META_MASK) != 0) {

                        popmenu = new FPopupMenu(mapContext, node);

                        tree.add(popmenu);

                        popmenu.show(e.getComponent(), e.getX(), e.getY());

                    }

                }

                ((DefaultTreeModel) tree.getModel()).nodeChanged(node);

                if (row == 0) {

                    tree.revalidate();

                    tree.repaint();

                }

                if (PluginServices.getMainFrame() != null) {

                    PluginServices.getMainFrame().enableControls();

                }

            }

        }

        /**

         * DOCUMENT ME!

         *

         * @param lyr DOCUMENT ME!

         * @param active DOCUMENT ME!

         */

        private void updateActive(FLayer lyr, boolean active) {

            lyr.setActive(active);

            updateActiveChild(lyr);

        }

        /**

         * DOCUMENT ME!

         *

         * @param lyr DOCUMENT ME!

         */

        private void updateActiveChild(FLayer lyr) {

            if (lyr instanceof FLayers) { //Es la raiz de una rama o cualquier nodo intermedio.

                FLayers layergroup = (FLayers) lyr;

                for (int i = 0; i < layergroup.getLayersCount(); i++) {

                    layergroup.getLayer(i).setActive(lyr.isActive());

                    updateActiveChild(layergroup.getLayer(i));

                }

            }

        }

        /**

         * Actualiza la visibilidad de la capas.

         *

         * @param lyr Capa sobre la que se est? clickando.

         */

        private void updateVisible(FLayer lyr) {

            lyr.setVisible(!lyr.isVisible());

            updateVisibleChild(lyr);

            updateVisibleParent(lyr);

        }

        /**

         * Actualiza de forma recursiva la visibilidad de los hijos de la capa

         * que se pasa como par?metro.

         *

         * @param lyr Capa a actualizar.

         */

        private void updateVisibleChild(FLayer lyr) {

            if (lyr instanceof FLayers) { //Es la raiz de una rama o cualquier nodo intermedio.

                FLayers layergroup = (FLayers) lyr;

                for (int i = 0; i < layergroup.getLayersCount(); i++) {

                    layergroup.getLayer(i).setVisible(lyr.isVisible());

                    updateVisibleChild(layergroup.getLayer(i));

                }

            }

        }

        /**

         * Actualiza de forma recursiva la visibilidad del padre de la capa que

         * se pasa como par?metro.

         *

         * @param lyr Capa a actualizar.

         */

        private void updateVisibleParent(FLayer lyr) {

            FLayers parent = (FLayers) lyr.getParentLayer();

            if (parent != null) {

                boolean parentVisible = false;

                for (int i = 0; i < parent.getLayersCount(); i++) {

                    if (parent.getLayer(i).isVisible()) {

                        parentVisible = true;

                    }

                }

                parent.setVisible(parentVisible);

                updateVisibleParent(parent);

            }

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0 DOCUMENT ME!

         */

        public void actionPerformed(ActionEvent arg0) {

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0 DOCUMENT ME!

         */

        public void mouseReleased(MouseEvent arg0) {

            super.mouseReleased(arg0);

        }

        /**

         * DOCUMENT ME!

         *

         * @param arg0 DOCUMENT ME!

         */

        public void mouseEntered(MouseEvent arg0) {

            // TODO Auto-generated method stub

            super.mouseEntered(arg0);

            // FJP: COMENTO ESTO.

            // LO CORRECTO CREO QUE ES IMPLEMENTAR CORRECTAMENTE

            // LOS METODOS DE DRAG AND DROP

            /* if (m_Root.getChildCount()==0){

               m_Tree.dropRoot(m_Root);

               }*/

        }

    }

}