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

 */

package org.gvsig.labeling.gui.layerproperties;

import java.awt.BorderLayout;

import java.awt.FlowLayout;

import java.awt.IllegalComponentStateException;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import java.beans.PropertyChangeEvent;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JSplitPane;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureSelection;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelClass;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelingMethod;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelingStrategy;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.IPlacementConstraints;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.IZoomConstraints;

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

import org.gvsig.i18n.Messages;

import org.gvsig.labeling.gui.styling.LayerPreview;

import org.gvsig.labeling.label.GeneralLabelingStrategy;

import org.gvsig.labeling.lang.LabelClassUtils;

import org.gvsig.symbology.SymbologyLocator;

import org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling.DefaultLabelingMethod;

import org.gvsig.tools.dispose.DisposableIterator;

import org.gvsig.tools.evaluator.EvaluatorException;

import org.gvsig.tools.evaluator.EvaluatorWithDescriptions;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class DefaultLabeling extends AbstractLabelingMethodPanel implements ActionListener {

        private static final Logger logger =

                        LoggerFactory.getLogger(DefaultLabeling.class);

        private static final long serialVersionUID = 7100208944546698724L;

        private ILabelClass defaultLabel;

        private IPlacementConstraints placementConstraints;

        private LayerPreview layerPrev;

        private JCheckBox enableLayerPrev;

        private LabelClassPreview labelPrev;

        private JButton btnProperties;

        private FeatureAttributeDescriptor[] fieldDescs;

        private boolean allowOverlap;

        private IZoomConstraints zoomConstraints;

        private LabelClassProperties lcProp;

        public Class<? extends ILabelingMethod> getLabelingMethodClass() {

                return DefaultLabelingMethod.class;

        }

        public String getName() {

                return Messages.getText("label_features_in_the_same_way") + ".";

        }

        @Override

        public void fillPanel(ILabelingMethod method, FeatureType fty) {

                try {

                        if (enableLayerPrev.isSelected()) {

                                layerPrev.setLayer(layer);

                        } else {

                                layerPrev.setLayer(null);

                        }

                        fieldDescs = fty.getAttributeDescriptors();

                        /*

                         * Why was this here?

                         * 

                        ILabelingStrategy labeling = layer.getLabelingStrategy();

                        if (!(labeling instanceof GeneralLabelingStrategy)) {

                                labeling = new GeneralLabelingStrategy();

                                labeling.setLayer(layer);

                                layer.setLabelingStrategy(labeling);

                        }

                        */

                } catch (Exception e) {

                        NotificationManager.addWarning(e.getMessage(), e);

                }

                ILabelClass lc = null;

                if (method.getLabelClasses() != null && method.getLabelClasses().length > 0) {

                        lc = method.getLabelClasses()[0];

                } else {

                        lc = SymbologyLocator.getSymbologyManager().createDefaultLabel();

                }

                setLabel(lc);

                getLcProp();

        }

        private JButton getBtnProperties(){

                if (btnProperties == null){

                        btnProperties = new JButton(Messages.getText("properties"));

                        btnProperties.addActionListener(this);

                }

                return btnProperties;

        }

        private LabelClassPreview getLabelPrev(){

                if (labelPrev == null){

                        labelPrev = new LabelClassPreview();

                }

                return labelPrev;

        }

        private JCheckBox getEnableLayerPreview(){

                if(enableLayerPrev == null){

                        enableLayerPrev = new JCheckBox(

                                        Messages.getText("Enable_layer_preview"));

                        enableLayerPrev.addItemListener(new ItemListener() {

                                public void itemStateChanged(ItemEvent e) {

                                        try {

                                                if (e.getStateChange()==ItemEvent.SELECTED) {

                                                        layerPrev.setLayer(layer);

                                                }

                                                else if (e.getStateChange()==ItemEvent.DESELECTED) {

                                                        layerPrev.setLayer(null);

                                                }

                                        } catch (ReadException e1) {

                                                logger.error("While setting changing layer in preview", e1);

                                        }

                                }

                        });

                }

                return enableLayerPrev;

        }

        private LayerPreview getLayerPreview(){

                if (layerPrev == null){

                        layerPrev = new LayerPreview();

                }

                return layerPrev;

        }

        @Override

        protected void initializePanel() {

                setLayout(new BorderLayout());

                JSplitPane scrl = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);

                scrl.add(getLayerPreview(), JSplitPane.LEFT);

                labelPrev = getLabelPrev(); //new LabelClassPreview();

                JPanel aux = new JPanel(new BorderLayout());

                aux.add(new JBlank(10, 10), BorderLayout.NORTH );

                aux.add(new JBlank(10, 10), BorderLayout.WEST );

                aux.add(labelPrev, BorderLayout.CENTER);

                aux.add(new JBlank(10, 10), BorderLayout.EAST );

                JPanel aux2 = new JPanel(new FlowLayout(FlowLayout.RIGHT, 10, 10));

                btnProperties = getBtnProperties();

                aux2.add(btnProperties);

//                btnProperties.addActionListener(this);

                aux.add(aux2, BorderLayout.SOUTH);

                scrl.add(aux, JSplitPane.RIGHT);

                add(scrl, BorderLayout.CENTER);

                scrl.setDividerLocation(500);

                getEnableLayerPreview().setSelected(false);

                add(enableLayerPrev, BorderLayout.SOUTH);

        }

        private LabelClassProperties getLcProp(){

                if(lcProp == null) {

                        int n = this.fieldDescs.length;

                        String[] fnames = new String[n];

                        int[] ftypes = new int[n];

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

                                fnames[i] = fieldDescs[i].getName();

                                ftypes[i] = fieldDescs[i].getType();

                        }

                        lcProp = new LabelClassProperties(fnames, ftypes);

                        lcProp.setLabelClass(method.getLabelClasses()[0]);

                }

                return lcProp;

        }

        public void actionPerformed(ActionEvent e) {

                if (e.getSource().equals(getBtnProperties())) {

//                        LabelClassProperties lcProp = new LabelClassProperties(fieldNames, fieldTypes);

//                        lcProp.setLabelClass(method.getLabelClasses()[0]);

//                        PluginServices.getMDIManager().addWindow(lcProp);

//                        setLabel(lcProp.getLabelClass());

                        LabelClassProperties lcProp = getLcProp();

                        ILabelClass lc = defaultLabel;

                        lcProp.setLabelClass(lc);

                        boolean eval = false;

                        while (!eval){

                                ApplicationLocator.getManager().getUIManager().addWindow(lcProp);

                                if(!lcProp.isAccepted()){ break; };

                                lc = lcProp.getLabelClass();

                                eval = checkValidSQL(lc);

                        }

                        setLabel(lc);

                }

        }

        private boolean checkValidSQL(ILabelClass lc){

                String sqlQuery = lc.getSQLQuery();

                if (sqlQuery != null && sqlQuery.trim().length() > 0) {

                        return LabelClassUtils.validExpression(

                                        sqlQuery, layer.getFeatureStore(), true);

                } else {

                        return true;

                }

        }

        private void setLabel(ILabelClass labelClass) {

                defaultLabel = labelClass;

                // defaultLabel = LabelingFactory.createLabelClassFromXML(labelClass.getXMLEntity());

                labelPrev.setLabelClass(defaultLabel);

                method = newMethodForThePreview(defaultLabel);

                updatePreview();

        }

        protected ILabelingMethod newMethodForThePreview(ILabelClass defaultLabel) {

                ILabelingMethod resp =

                                SymbologyLocator.getSymbologyManager().createDefaultLabelingMethod();

                resp.addLabelClass(defaultLabel);

                return resp;

        }

        private void updatePreview() {

                ILabelingStrategy stra = layer.getLabelingStrategy();

                if (method == null){

                        stra.setLabelingMethod(newMethodForThePreview(defaultLabel));

                } else {

                        stra.setLabelingMethod(method);

                }

//                s.setPlacementConstraints(placementConstraints);

//                s.setAllowOverlapping(allowOverlap);

//                s.setZoomConstraints(zoomConstraints);

                layer.setIsLabeled(true);

                DisposableIterator diter = null;

                FeatureSelection fsel = null;

                try {

                        diter = layer.getFeatureStore().getFeatureSet().fastIterator();

                        fsel = layer.getFeatureStore().getFeatureSelection();

                        fsel.deselectAll();

                } catch (DataException de) {

                        logger.error("While getting store selection", de);

                        return;

                }

                long count = 0;

                Feature feat = null;

                while (diter.hasNext() && count < 200) {

                        feat = (Feature) diter.next();

                        if (count % 4 == 0) {

                                fsel.select(feat);

                        }

                        count++;

                }

                diter.dispose();

                try {

                        Rectangle r = layerPrev.getBounds();

                        r.setLocation(layerPrev.getLocationOnScreen());

                        layerPrev.paintImmediately(r);

                        layerPrev.doLayout();

                } catch (IllegalComponentStateException ex) {

                        // this happens when the component is not showing in the

                        // screen. If that is the case, then we don't need to do

                        // anything.

                }

        }

        public void propertyChange(PropertyChangeEvent evt) {

                String prop = evt.getPropertyName();

                ILabelingStrategy strat = layer.getLabelingStrategy();

                if (AbstractLabelingMethodPanel.PLACEMENT_CONSTRAINTS.equals(prop)) {

                        placementConstraints = (IPlacementConstraints) evt.getNewValue();

                        strat.setPlacementConstraints(placementConstraints);

                } else if ((strat instanceof GeneralLabelingStrategy) &&

                                AbstractLabelingMethodPanel.ALLOW_OVERLAP.equals(prop)) {

                        allowOverlap = (Boolean) evt.getNewValue();

                        ((GeneralLabelingStrategy) strat).setAllowOverlapping(allowOverlap);

                } else if (AbstractLabelingMethodPanel.ZOOM_CONSTRAINTS.equals(prop)) {

                        zoomConstraints = (IZoomConstraints) evt.getNewValue();

                        strat.setZoomConstraints(zoomConstraints);

                }

                updatePreview();

        }

        public void setEnabled(boolean enabled) {

                super.setEnabled(enabled);

                if (layerPrev!=null) {

                        layerPrev.setEnabled(enabled);

                };

                if (labelPrev!=null) {

                        labelPrev.setEnabled(enabled);

                };

                if (btnProperties!=null) {

                        btnProperties.setEnabled(enabled);

                };

        }

}