| gvSIG desktop 1

/*

 * Created on 14-dic-2004

 *

 * TODO 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.project.documents.view.legend.gui;

import javax.swing.JPanel;

import com.iver.cit.gvsig.fmap.core.symbols.ISymbol;

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

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

/**

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

 *

 * Este interfaz es el que debe cumplir cualquier panel que empleemos

 * para confeccionar una leyenda. Se le pasa una capa para que

 * tome su leyenda, y con el m?todo getLegend tomamos la leyenda

 * que ha confeccionado el usuario.

 */

public interface ILegendPanel {

        /**

         * Initializes the data required for this legend panel. That is, the layer that

         * will adopt the changes and the current legend that this layer has. If the

         * legend is not the type of legend that this panel manage then it initializes

         * the panel with the default values. In case it is, then the panel should

         * refresh its components with the current values of the Legend.

         * @param lyr,  target layer

         * @param legend, the legend currently applied to lyr

         */

        public void setData(FLayer lyr, Legend legend);

        /**

         * Returns an instance of Legend

         * @return Legend, the legend result of the settings

         */

        public Legend getLegend();

        /**

         * Returns a brief human-readable description about what kind of legend builds this panel

         * @return String with a brief description

         */

        public String getDescription();

        /**

         * Returns the icon which should graphically describe what this panel's legend does.

         * @return ImageIcon with the icon to be displayed

         */

        public ISymbol getPreviewSymbol();

        /**

         * If this panel should appear as a subnode of the legends tree, in other words it is not

         * a first-level node, then this method would return <b>its parent's class</b>. Otherwise, if

         * it is a first-level node, then it will return <b>null</b>.

         * @return String containing the parent's title.

         */

        public Class getParentClass();

        /**

         * Returns the title (a human-readable one) of this panel.

         */

        public String getTitle();

        /**

         * <p>If this is a complete panel (it is a child node in the legend tree) to set up a legend

         * this method will return a <b>JPanel</b> containing the necessary components. Otherwise, if

         * it is just a classification node (it has children) in the legend tree it will return

         * just <b>null</b>.<br></p>

         *

         * <p>If <b>null</b> is returned, the ILegendPanel that will be shown and selected each time

         * it is selected is the very first child of this parent node.</p>

         */

        public JPanel getPanel();

        /**

         * Returns the class of the legend produced by this ILegendPanel.

         */

        public Class getLegendClass();

}