| gvSIG desktop 1

/*

 * Created on 27-oct-2006

 *

 * 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

 */

/* CVS MESSAGES:

*

* $Id$

* $Log$

* Revision 1.2  2006-11-03 19:39:29  azabala

* *** empty log message ***

*

* Revision 1.1  2006/10/27 18:26:07  azabala

* *** empty log message ***

*

*

*/

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

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.GridBagConstraints;

import java.awt.Window;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.ArrayList;

import java.util.Arrays;

import javax.swing.DefaultComboBoxModel;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JPanel;

import org.gvsig.gui.beans.AcceptCancelPanel;

import org.gvsig.gui.beans.swing.GridBagLayoutPanel;

import com.iver.andami.PluginServices;

import com.iver.andami.ui.mdiManager.IWindow;

import com.iver.andami.ui.mdiManager.WindowInfo;

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

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

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

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

/**

 * Component that shows in a combobox all the TOC's layers, and allows

 * user to select one of them.

 *

 * It optionally allows to filter layers for a given geometry type.

 *

 *

 * */

public class LayerSelectionPanel extends JPanel implements IWindow{

        private GridBagLayoutPanel contentPanel;

        FLayers layers = null;

        JComboBox layersComboBox = null;

        AcceptCancelPanel buttonPanel = null;

        private ActionListener okActionListener = new ActionListener(){

                public void actionPerformed(ActionEvent arg0) {

                        wasFinishPressed = true;

                        closeParent(LayerSelectionPanel.this);

                }

        };

        private ActionListener cancelActionListener = new ActionListener(){

                public void actionPerformed(ActionEvent arg0) {

                        wasFinishPressed = false;

                        closeParent(LayerSelectionPanel.this);

                }

        };

        String title = null;

        String introductoryText = null;

        boolean wasFinishPressed = false;

        /**

         * Optinal filter to show in the combo box layers of a given

         * geometry typ0e

         * */

        int geometryType = -1;

        /**

         * If it is not null, we'll filter layers to only show

         * types of this class

         * */

        Class layerType;

        private WindowInfo wi;

        public LayerSelectionPanel(FLayers tocLayers,

                        String title,

                        String introductoryText){

                this(tocLayers, title, introductoryText, (Class) null, -1);

        }

        public LayerSelectionPanel(FLayers layers, String title,

                                String introductoryText, Class class1, int geometryType) {

                super();

                this.layers = layers;

                this.introductoryText = introductoryText;

                this.layerType = class1;

                this.geometryType = geometryType;

                initialize();

        }

        public void setGeometryTypeConstraint(int geometryType){

                if(layerType == null || !(layerType.isAssignableFrom(FLyrVect.class)))

                        return;

                this.geometryType = geometryType;

        }

        public void setLayerTypeConstraint(Class layerClass){

                this.layerType = layerClass;

        }

        public FLayer getLayer() {

                FLayer solution = null;

                String selectedLayer = (String)layersComboBox.getSelectedItem();

        solution = layers.getLayer(selectedLayer);

        return solution;

        }

        public void setFLayers(FLayers layers){

                this.layers = layers;

                updateLayerCombo();

        }

        public void initialize(){

                setLayout(new BorderLayout());

                contentPanel = new GridBagLayoutPanel();

                contentPanel.addComponent(new JLabel(introductoryText), GridBagConstraints.BOTH);;

                contentPanel.addComponent(PluginServices.getText(null, "Capas:"), getLayersComboBox());

                add(contentPanel, BorderLayout.NORTH);

                add(getButtonPanel(), BorderLayout.SOUTH);

        }

        AcceptCancelPanel getButtonPanel() {

                if (buttonPanel == null) {

                        buttonPanel = new AcceptCancelPanel();

                        buttonPanel.setOkButtonActionListener(okActionListener);

                        buttonPanel.setCancelButtonActionListener(cancelActionListener);

                }

                return buttonPanel;

        }

        void updateLayerCombo(){

                DefaultComboBoxModel defaultModel =

                new DefaultComboBoxModel(getLayerNames());

        layersComboBox.setModel(defaultModel);

        }

        public boolean wasFinishPressed(){

                return wasFinishPressed;

        }

        protected FLayer[] getLayerForType(FLayers layers){

                FLayer[] solution = null;

                int numLayers = layers.getLayersCount();

                if(layers != null &&  numLayers > 0){

                        ArrayList list = new ArrayList();

                        for(int i = 0; i < numLayers; i++){

                                FLayer layer = layers.getLayer(i);

                                if(layerType != null){

                                        if(!layer.getClass().isAssignableFrom(layerType))

                                                continue;

                                        if(layer instanceof FLyrVect){

                                                try {

                                                        if(((FLyrVect)layer).getShapeType() != geometryType)

                                                                continue;

                                                        list.add(layer);

                                                } catch (DriverException e) {

                                                        continue;

                                                }

                                        }//if

                                }//if

                                if(layer instanceof FLayers){

                                        list.addAll(Arrays.asList(getLayerForType((FLayers)layer)));

                                }

                        }//for

                        solution = new FLyrVect[list.size()];

                        list.toArray(solution);

                }//if

                return solution;

        }

        protected String[] getLayerNames() {

                String[] solution = null;

                ArrayList nameList = new ArrayList();

                FLayer[] layers = getLayerForType(this.layers);

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

                        nameList.add(layers[i].getName());

                }

                solution = new String[nameList.size()];

                nameList.toArray(solution);

                return solution;

        }

        private JComboBox getLayersComboBox() {

                if (layersComboBox == null) {

            layersComboBox = new JComboBox();

                }

                updateLayerCombo();

                return layersComboBox;

        }

        public static void closeParent(JPanel component){

                Container container = component.getParent();

                Container parentOfContainer = null;

                while(! (container instanceof Window)){

                        parentOfContainer = container.getParent();

                        container = parentOfContainer;

                }

                ((Window)container).dispose();

        }

        public WindowInfo getWindowInfo() {

                  if (wi==null) {

                    wi = new WindowInfo(WindowInfo.MODALDIALOG);

                    wi.setWidth(450);

                    wi.setHeight(320);

                    wi.setTitle(title);

                }

                return wi;

        }

}  //  @jve:decl-index=0:visual-constraint="10,10"