Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2009 {Iver T.I.}   {Task}

 */

package org.gvsig.app.daltransform.gui;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import java.util.ArrayList;

import javax.swing.DefaultListModel;

import javax.swing.JCheckBox;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import jwizardcomponent.JWizardComponents;

import org.gvsig.fmap.dal.DataTypes;

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

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

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

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

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

import org.gvsig.fmap.mapcontext.MapContext;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.iver.andami.PluginServices;

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

import com.iver.cit.gvsig.ProjectExtension;

import com.iver.cit.gvsig.project.documents.ProjectDocument;

import com.iver.cit.gvsig.project.documents.view.ProjectViewBase;

import com.iver.cit.gvsig.project.documents.view.ProjectViewFactory;

import com.iver.cit.gvsig.project.documents.view.gui.IView;

/**

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>

 */

public class LoadLayerWizard  extends FeatureTransformWizard implements ItemListener{

        private static final Logger logger = LoggerFactory.getLogger(LoadLayerWizard.class);

        private JCheckBox loadLayerCb = null;

        private JScrollPane messageScroll = null;

        private JTextArea messageTextArea = null;

        private JPanel northPanel = null;

        private JLabel selectViewLabel;

        private JList selectViewList;

        private JScrollPane selectViewScroll;

    private JPanel centerPanel;

        private FeatureStoreTransform transform = null;

        /**

         * @param wizardComponents

         */

        public LoadLayerWizard(FeatureTransformWizardModel featureTransformWizardModel) {

                super(featureTransformWizardModel);        

                initComponents();

                initLabels();        

                addViews();

                loadLayerCb.addItemListener(this);

                itemStateChanged(null);

        }

        private void initLabels(){

                loadLayerCb.setText(PluginServices.getText(this, "transform_load_layer_query"));

                selectViewLabel.setText(PluginServices.getText(this, "transform_view_to_load"));

                setBorder(javax.swing.BorderFactory.createTitledBorder(PluginServices.getText(this, "transform_apply")));

        }

        private void initComponents() {

        java.awt.GridBagConstraints gridBagConstraints;

        northPanel = new javax.swing.JPanel();

        messageScroll = new javax.swing.JScrollPane();

        messageTextArea = new javax.swing.JTextArea();

        loadLayerCb = new javax.swing.JCheckBox();

        selectViewLabel = new javax.swing.JLabel();

        centerPanel = new javax.swing.JPanel();

        selectViewScroll = new javax.swing.JScrollPane();

        selectViewList = new javax.swing.JList();

        selectViewList.setModel(new DefaultListModel());

        setLayout(new java.awt.BorderLayout());

        northPanel.setLayout(new java.awt.GridBagLayout());

        messageScroll.setBorder(null);

        messageTextArea.setColumns(20);

        messageTextArea.setEditable(false);

        messageTextArea.setLineWrap(true);

        messageTextArea.setRows(5);

        messageTextArea.setBorder(null);

        messageScroll.setViewportView(messageTextArea);

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.insets = new java.awt.Insets(2, 2, 5, 2);

        northPanel.add(messageScroll, gridBagConstraints);

        loadLayerCb.setText("jCheckBox1");

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 1;

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.insets = new java.awt.Insets(5, 2, 2, 2);

        northPanel.add(loadLayerCb, gridBagConstraints);

        selectViewLabel.setText("jLabel1");

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 2;

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.insets = new java.awt.Insets(5, 2, 5, 2);

        northPanel.add(selectViewLabel, gridBagConstraints);

        add(northPanel, java.awt.BorderLayout.NORTH);

        centerPanel.setLayout(new java.awt.GridBagLayout());

        selectViewScroll.setHorizontalScrollBarPolicy(javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

        selectViewScroll.setPreferredSize(null);

        selectViewScroll.setViewportView(selectViewList);

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.weighty = 1.0;

        gridBagConstraints.insets = new java.awt.Insets(5, 2, 2, 2);

        centerPanel.add(selectViewScroll, gridBagConstraints);

        add(centerPanel, java.awt.BorderLayout.CENTER);

        }

        /* (non-Javadoc)

         * @see jwizardcomponent.JWizardPanel#update()

         */        

        public void update() {

                JWizardComponents components = getWizardComponents();

                //Gets the selected transformation

                FeatureTransformGui featureTransformGui = getSelectedFeatureTransformGui();

                //Gets the selected FeatureStore

                FeatureStore featureStore = getSelectedFeatureStore();

                //Apply the transformation

                try {

                        transform = featureTransformGui.createFeatureStoreTransform(featureStore);

                        if (isSelectedFeatureStoreLoaded()){

                                updateGuiForLayer(transform);

                        }else{

                                updateGuiForTable(transform);

                        }

                } catch (DataException e) {

                        logger.error("Error creating the transformation", e);

                }                

        }

        /**

         * Update the form when the transform has been applied in

         * to a table

         * @param transform

         * @throws DataException

         */

        private void updateGuiForTable(FeatureStoreTransform transform) throws DataException{

                FeatureType featureType = transform.getDefaultFeatureType();

                FeatureAttributeDescriptor[] featureAttributeDescriptors = featureType.getAttributeDescriptors();

                boolean hasGeometry = false;

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

                        if (featureAttributeDescriptors[i].getDataType() == DataTypes.GEOMETRY){

                                hasGeometry = true;

                        }

                }

                if (hasGeometry){

                        if (selectViewList.getModel().getSize() == 0){

                                messageTextArea.setText(PluginServices.getText(this, "transform_layout_not_view_to_load"));

                                setLoadLayerVisible(false);

                        }else{

                                messageTextArea.setText(PluginServices.getText(this, "transform_layout_geometry"));

                                setLoadLayerVisible(true);

                        }

                }else{

                        messageTextArea.setText(PluginServices.getText(this, "transform_layout_no_geometry"));

                        setLoadLayerVisible(false);

                }                

        }

        /**

         * Set if it is possible or not lo load a layer

         * from the transformation

         * @param isVisible

         */

        private void setLoadLayerVisible(boolean isVisible){

                loadLayerCb.setVisible(isVisible);

                selectViewLabel.setVisible(isVisible);

                selectViewScroll.setVisible(isVisible);

                selectViewList.setVisible(isVisible);

        }

        /**

         * Add the project views

         */

        private void addViews(){

                selectViewList.removeAll();

                ProjectExtension ext = (ProjectExtension) PluginServices.getExtension(ProjectExtension.class);

                ArrayList<ProjectDocument> projects = ext.getProject().getDocumentsByType(ProjectViewFactory.registerName);

                for (int i=0 ; i<projects.size() ; i++){

                        ProjectViewBase view = (ProjectViewBase)projects.get(i);

                        ((DefaultListModel)selectViewList.getModel()).addElement(view);

                }

                IWindow window = PluginServices.getMDIManager().getActiveWindow();

                if (window instanceof IView){

                        selectViewList.setSelectedValue(window, true);

                }else{

                        selectViewList.setSelectedIndex(0);

                }

        }

        /**

         * Update the form when the transform has been applied in

         * to a layer

         * @param transform

         * @throws DataException

         */

        private void updateGuiForLayer(FeatureStoreTransform transform){

                messageTextArea.setText(PluginServices.getText(this, "transform_layer"));

                setLoadLayerVisible(false);

        }

        /**

         * @return if the layer has to be loaded 

         */

        public boolean isLayerLoaded(){

                if (!loadLayerCb.isVisible()){

                        return false;

                }

                return loadLayerCb.isSelected();

        }        

        /**

         * @return the transform

         */

        public FeatureStoreTransform getTransform() {

                return transform;

        }

        /**

         * @return The mapcontext

         */

        public MapContext getMapContext(){

                Object obj = selectViewList.getSelectedValue();

                if (obj != null){

                        return ((ProjectViewBase)obj).getMapContext();

                }

                return null;

        }

        /* (non-Javadoc)

         * @see java.awt.event.ItemListener#itemStateChanged(java.awt.event.ItemEvent)

         */

        public void itemStateChanged(ItemEvent arg0) {

                boolean isSelected = loadLayerCb.isSelected();

                selectViewLabel.setEnabled(isSelected);

                selectViewList.setEnabled(isSelected);

        }

}