Application: gvSIG desktop

package org.gvsig.export.swing.impl.panels;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Iterator;

import java.util.List;

import javax.swing.DefaultListModel;

import javax.swing.JComponent;

import javax.swing.JOptionPane;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.export.ExportLocator;

import org.gvsig.export.ExportManager;

import org.gvsig.export.ExportManager.ExportFilter;

import org.gvsig.export.ExportParameters;

import org.gvsig.export.swing.JExportProcessPanel;

import org.gvsig.export.swing.spi.ExportPanel;

import org.gvsig.export.swing.spi.ExportPanelValidationException;

import org.gvsig.export.swing.spi.ExportPanelsManager;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

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

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.dynobject.DynObjectManager;

import org.gvsig.tools.evaluator.Evaluator;

import org.gvsig.tools.evaluator.EvaluatorData;

import org.gvsig.tools.evaluator.EvaluatorException;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.swing.api.ListElement;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 *

 * @author jjdelcerro

 */

public class SelectFilterPanel

        extends SelectFilterPanelView

        implements ExportPanel 

    {

    private static final Logger LOG = LoggerFactory.getLogger(SelectFilterPanel.class);

    private final ExportParameters parameters;

    private final JExportProcessPanel processPanel;

    public SelectFilterPanel(

            JExportProcessPanel processPanel,

            ExportParameters parameters

        ) {

        this.processPanel = processPanel;

        this.parameters = parameters;

        this.initComponents();

    }

    @Override

    public String getIdPanel() {

        return ExportPanelsManager.PANEL_SELECT_FILTER;

    }

    @Override

    public String getTitlePanel() {

        I18nManager i18n = ToolsLocator.getI18nManager();

        return i18n.getTranslation("_Filter");

    }

    @Override

    public boolean validatePanel() throws ExportPanelValidationException {

        checkPanel(true);

        return true;

    }

    @Override

    public void enterPanel() {

    }

    @Override

    public void exitPanel() {

        this.parameters.setFilterExpresion(this.getFilterExpresion());

        if( this.isFullLayerSelected() ) {

            this.parameters.setFeaturesToUse(ExportParameters.USE_ALL_FEATURES);

        } else if( this.isPersonalizedFilterSelected() ) {

            this.parameters.setFeaturesToUse(ExportParameters.USE_FILTERED_FEATURES);

        } else {

            this.parameters.setFeaturesToUse(ExportParameters.USE_SELECTED_FEATURES);

        }

    }

    @Override

    public JComponent asJComponent() {

        return this;

    }

    private void initComponents() {

        ExportManager manager = ExportLocator.getManager();

        DefaultListModel model = new DefaultListModel();

        List<ExportManager.ExportFilter> filters = manager.getFilters();

        for (ExportFilter filter : filters) {

            model.addElement(new ListElement(filter.getName(),filter.getExpression()));

        }

        this.lstFilters.setModel(model);

        this.lstFilters.addListSelectionListener(new ListSelectionListener() {

            @Override

            public void valueChanged(ListSelectionEvent lse) {

                doSelectFilter();

            }

        });

        ActionListener changeOptionAction = new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                doChangeOption();

            }

        };

        this.rdbAllRows.addActionListener(changeOptionAction);

        this.rdbFilteredRows.addActionListener(changeOptionAction);

        this.rdbSelectedRows.addActionListener(changeOptionAction);

        this.rdoUseNewExpresion.addActionListener(changeOptionAction);

        this.rdoUseSavedExpresion.addActionListener(changeOptionAction);

        this.butTest.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                doTest();

            }

        });

        this.rdbAllRows.setSelected(true);

        doChangeOption();

        this.butFilterDialog.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                doShowFilterDialog();

            }

        });

        this.translate();

    }

    private void translate() {

        I18nManager i18nManager = ToolsLocator.getI18nManager();

        this.rdbAllRows.setText(i18nManager.getTranslation("_Todos_los_registros"));

        this.rdbSelectedRows.setText(i18nManager.getTranslation("_Los_registros_seleccionados"));

        this.rdbFilteredRows.setText(i18nManager.getTranslation("_Los_registros_que_cumplan_el_critrio_seleccionado"));

        this.lblName.setText(i18nManager.getTranslation("_Nombre_de_la_expresion_opcinal"));

        this.lblExpresion.setText(i18nManager.getTranslation("_Expresion"));

        this.txtName.setToolTipText(i18nManager.getTranslation("_Type_here_the_name_of_the_expression_if_you_want_to_save_it_otherwise_leave_it_blank"));

        this.butTest.setText(i18nManager.getTranslation("_Test"));

        this.lblHeader.setText(i18nManager.getTranslation("_Indique_que_registros_desea_exportar"));

        this.rdoUseSavedExpresion.setText(i18nManager.getTranslation("_Usar_una_expresion_guardada"));

        this.rdoUseNewExpresion.setText(i18nManager.getTranslation("_Nueva_expresion"));

        this.butFilterDialog.setText(i18nManager.getTranslation("_Filtro"));        

    }    

    private void doShowFilterDialog() {

    }

    protected void doSelectFilter() {

        ExportFilter item = (ExportFilter) ListElement.getSelected(this.lstFilters);

        if( item!=null ) {

            this.txtExpresion.setText(item.getExpression());

            this.txtName.setText(item.getName());

        }

    }

    private static class Data implements EvaluatorData {

        private final DynObject data;

        public Data(DynObject data) {

            this.data = data;

        }

        @Override

        public Object getDataValue(String name) {

            if( this.data.getDynClass().getDynField(name)!=null ) {

                return this.data.getDynValue(name);

            }

            if( "defaultgeometry".equalsIgnoreCase(name) ) {

                // FIXME: deberia crear una geometris de agun tipo

                return null;

            }

            throw new RuntimeException("Identifier '"+name+"'not defined.");

        }

        @Override

        public Object getContextValue(String name) {

            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

        }

        @Override

        public Iterator getDataValues() {

            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

        }

        @Override

        public Iterator getDataNames() {

            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

        }

        @Override

        public boolean hasDataValue(String name) {

            if( "defaultgeometry".equalsIgnoreCase(name) ) {

                return true;

            }

            return  this.data.hasDynValue(name);

        }

        @Override

        public boolean hasContextValue(String name) {

            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

        }

    }

    protected void doTest() {

        try {

            this.checkPanel(false);

            I18nManager i18nManager = ToolsLocator.getI18nManager();

            JOptionPane.showMessageDialog(this,

                    i18nManager.getTranslation("_Expresion_correcta"),

                    i18nManager.getTranslation("_Filter"),

                    JOptionPane.INFORMATION_MESSAGE

            );

        } catch (ExportPanelValidationException ex) {

            I18nManager i18nManager = ToolsLocator.getI18nManager();

            JOptionPane.showMessageDialog(this,

                    ex.getMessage(), 

                    i18nManager.getTranslation("_Warning"),

                    JOptionPane.WARNING_MESSAGE

            );

        }

    }

    protected void doChangeOption(){

        if( this.rdbFilteredRows.isSelected() ) {

            this.rdoUseNewExpresion.setEnabled(true);

            this.rdoUseSavedExpresion.setEnabled(true);

            if( this.rdoUseSavedExpresion.isSelected() ) {

                this.lstFilters.setEnabled(true);

                this.txtName.setEnabled(false);

                this.txtExpresion.setEnabled(false);

                this.butTest.setEnabled(false);

                this.butFilterDialog.setEnabled(false);

            } else {

                this.rdoUseNewExpresion.setSelected(false);

                this.lstFilters.setEnabled(false);

                this.txtName.setEnabled(true);

                this.txtExpresion.setEnabled(true);

                this.butTest.setEnabled(true);

                this.butFilterDialog.setEnabled(true);

            }

        } else if( this.rdbSelectedRows.isSelected() ) {

            this.lstFilters.setEnabled(false);

            this.txtName.setEnabled(false);

            this.txtExpresion.setEnabled(false);

            this.butTest.setEnabled(false);

            this.butFilterDialog.setEnabled(false);

            this.rdoUseNewExpresion.setEnabled(false);

            this.rdoUseSavedExpresion.setEnabled(false);

        } else {

            this.rdbAllRows.setSelected(true);

            this.lstFilters.setEnabled(false);

            this.txtName.setEnabled(false);

            this.txtExpresion.setEnabled(false);

            this.butTest.setEnabled(false);

            this.butFilterDialog.setEnabled(false);

            this.rdoUseNewExpresion.setEnabled(false);

            this.rdoUseSavedExpresion.setEnabled(false);

        }

    } 

    public boolean isFullLayerSelected() {

        return this.rdbAllRows.isSelected();

    }

    public boolean isSelectedFeaturesSelected() {

        return this.rdbSelectedRows.isSelected();

    }

    public boolean isPersonalizedFilterSelected() {

        return this.rdbFilteredRows.isSelected();

    }

    public void checkPanel(boolean save)  throws ExportPanelValidationException {

        if( this.rdbFilteredRows.isSelected() ) {

            I18nManager i18nManager = ToolsLocator.getI18nManager();

            String expresion = this.getFilterExpresion();

            if( expresion == null ) {

                throw new ExportPanelValidationException(

                        i18nManager.getTranslation("_The_expresion_is_empty_Check_other_option_or_enter_a_expresion")

                );

            }

            Evaluator filter = this.getFilter();

            if( filter == null ) {

                throw new ExportPanelValidationException(

                        i18nManager.getTranslation("_Problems_compiling_the_expesion_Check_the_sintax_Remember_use_SQL_expresion_sintax")

                );

            }

            DynObjectManager dynobjmanager = ToolsLocator.getDynObjectManager();

            try {

                DynObject values = dynobjmanager.createDynObject(this.parameters.getSourceFeatureType());

                filter.evaluate(new Data(values));

            } catch (EvaluatorException ex) {

                throw new ExportPanelValidationException(

                        i18nManager.getTranslation("_Check_the_sintax_Remember_use_SQL_expresion_sintax")

                        + "\n"

                        + ex.getCause().getMessage()

                );

            } catch (Exception ex) {

                LOG.warn("Can't test expresion",ex);

                throw new ExportPanelValidationException(

                        i18nManager.getTranslation("_Problems_to_create_a_data_set_to_test_the_expresion_See_register_for_more_information")

                );

            }

            if( save ) {

                String filterName = this.getFilterName();

                if( filterName!=null ) {

                    ExportManager manager = ExportLocator.getManager();

                    manager.addFilter(filterName, expresion);

                }

            }

        }

    }

    private Evaluator getFilter() {

        String filter = this.getFilterExpresion();

        if( filter == null ) {

            return null;

        }

        DataManager datamanager = DALLocator.getDataManager();

        try {

            Evaluator evaluator = datamanager.createExpresion(filter);

            return evaluator;

        } catch (InitializeException ex) {

            // Error de sintaxis en la expresion ???

            return null;

        }

    }

    public String getFilterExpresion() {

        String s = this.txtExpresion.getText();

        if( StringUtils.isBlank(s) ) {

            return null;

        }

        return s.trim();

    }

    public String getFilterName() {

        String s = this.txtName.getText();

        if( StringUtils.isBlank(s) ) {

            return null;

        }

        return s.trim();

    }

}