| gvSIG desktop 1

package es.prodevelop.cit.gvsig.arcims.gui.panels.utils;

import java.awt.Color;

import java.awt.Component;

import javax.swing.JComponent;

import javax.swing.JTree;

import javax.swing.tree.DefaultMutableTreeNode;

import javax.swing.tree.DefaultTreeCellRenderer;

/**

 * This class overrides the jtree cell renderer to allow

 * a different tool tip for each node.

 * 

 * @author jldominguez

 *

 */

public class AvailableLayersTreeCellRenderer extends DefaultTreeCellRenderer {

        /**

         * Colors used to indicate whether a node has been added or not.

         * This has a sense in the FeatureServicePanel:

         * 

         * @see es.prodevelop.cit.gvsig.arcims.gui.panels.FeatureServicePanel

         */

        private Color addedLeafForeground = Color.LIGHT_GRAY;

        private Color notAddedLeafForeground = Color.BLACK;

        private static final long serialVersionUID = 0;

        /**

         * This method sets the specific tool tip for each node

         * and the root node

         */

        public Component getTreeCellRendererComponent(JTree tree, Object value,

                        boolean selected, boolean expanded, boolean leaf, int row,

                        boolean hasFocus) {

                Component c = super.getTreeCellRendererComponent(tree, value, selected,

                                expanded, leaf, row, hasFocus);

                JComponent jc;

                DefaultMutableTreeNode dmtn = (DefaultMutableTreeNode) value;

                Object innerObj = dmtn.getUserObject();

                if (innerObj instanceof LayersListElement) {

                        // tree nodes, with the LayersListElement's tool tip

                        LayersListElement lle = (LayersListElement) dmtn.getUserObject();

                        c.setForeground(this.getLeafForegroundColor(leaf, lle.isAdded(), selected));

                        jc = (JComponent) c;

                        jc.setToolTipText(lle.toolTipText());                 

                }

                if (innerObj instanceof ServiceNamesObject) {

                        // tree root node, with the ServiceNamesObject's tool tip

                        ServiceNamesObject sno = (ServiceNamesObject) dmtn.getUserObject(); 

                        jc = (JComponent) c;

                        jc.setToolTipText(sno.toolTipText());                 

                }

                return c;

        }

        /**

         * Gets the tree node's font color.

         * 

         * @param lf whether it is a leaf or not.

         * @param added whether the node has been added or not.

         * @param sel whether the node is selected or not.

         * @return the node's font color.

         */

        private Color getLeafForegroundColor(boolean lf, boolean added, boolean sel) {

                if (!lf) return Color.BLACK;

                if (sel) return Color.WHITE;

                if (added) {

                        return addedLeafForeground;

                } else {

                        return notAddedLeafForeground;

                }

        }

}