Application: gvSIG desktop » gvSIG legends: base legends

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/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2020 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.symbology.fmap.rendering;

import java.util.ArrayList;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

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

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.MapContextManager;

import org.gvsig.fmap.mapcontext.rendering.legend.events.SymbolLegendEvent;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolManager;

import org.gvsig.i18n.Messages;

import org.gvsig.symbology.fmap.mapcontext.rendering.legend.driver.impl.PersistenceBasedLegendWriter;

import org.gvsig.symbology.fmap.mapcontext.rendering.legend.impl.AbstractClassifiedVectorLegend;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.evaluator.Evaluator;

import org.gvsig.tools.evaluator.EvaluatorData;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.gvsig.tools.util.Callable;

import org.gvsig.tools.util.Caller;

import org.gvsig.tools.util.impl.DefaultCaller;

/**

 *

 * Implements a vector legend which represents the elements of a layer

 * depending on the value of an expression. That is, if the expression is

 * evaluated to true, then the symbol associated to the expression is painted.

 * In other case it is not showed.

 *

 * If the expression result is a string, it is considered false if

 * it is the empty string "", true otherwise.

 *

 * If the expression result is numeric, it is considered false

 * if it is zero, and true otherwise.

 *

 * In other cases, it is considered false if the result is null and true

 * otherwise.

 *

 * @author gvSIG Team

 */

public class VectorFilterExpressionLegend

extends AbstractClassifiedVectorLegend  {

    private static final Logger logger = LoggerFactory.getLogger(

        VectorFilterExpressionLegend.class);

    public static final String

    FILTER_EXPRESSION_LEGEND_PERSISTENCE_DEFINITION_NAME =

    "FILTER_EXPRESSION_LEGEND_PERSISTENCE_DEFINITION_NAME";

    public static final String

    FILTER_EXPRESSION_LEGEND_NAME = "FILTER_EXPRESSION_LEGEND_NAME";

    public static final String I18N_DEFAULT = Messages.getText("default_value");

    public static final String NON_I18N_DEFAULT = Messages.getText("Default");

	private int shapeType;

	private ISymbol defaultSymbol;

	private boolean useDefaultSymbol = false;

	private long error_msg_count = 0;

	private ArrayList<Item> newSymbols = new ArrayList<Item>() {

		private static final long serialVersionUID = 1L;

		public int indexOf(String expr) {

			return super.indexOf(new Item(expr, null));

		}

	};

	private class Item implements Cloneable {

		private ISymbol sym;

		private Evaluator evaluator;

		public Item(String expression, ISymbol sym) {

			this.sym = sym;

      DataManager dataManager = DALLocator.getDataManager();

      try {

        evaluator = dataManager.createFilter(expression);

      } catch (InitializeException ex) {

        evaluator = null;

      }

		}

		public boolean equals(Object obj) {

			if (obj == null) return false;

			if (!obj.getClass().equals(Item.class)) return false;

			return this.evaluator.getSQL().equals(

			    ((Item) obj).evaluator.getSQL()

			    );

		}

		public String getStringExpression() {

			return evaluator.getSQL();

		}

		public Evaluator getEvaluator() {

			return evaluator;

		}

		public Object clone() {

		    ISymbol clonesym = null;

		    try {

                clonesym = (ISymbol) this.sym.clone();

            } catch (CloneNotSupportedException e) {

                logger.info("Error: unable to clone symbol.", e);

                clonesym = this.sym;

            }

		    return new Item(getStringExpression(), clonesym);

		}

	}

    public VectorFilterExpressionLegend() {

        this.setClassifyingFieldNames(new String[0]);

        this.setClassifyingFieldTypes(new int[0]);

    }

	public ISymbol getSymbolByFeature(Feature featu) {

	    EvaluatorData evda = featu.getEvaluatorData();

		ISymbol returnSymbol = null;

		Object result = null;

		String expr = null;

		try {

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

				Evaluator eval = newSymbols.get(i).getEvaluator();

				expr = eval.getSQL();

                if (expr.equalsIgnoreCase(VectorFilterExpressionLegend.I18N_DEFAULT)){

                    /*

                     * Skip default item

                     */

                    continue;

                }

				result = eval.evaluate(evda);

				if (isConsideredTrue(result)) {

                    returnSymbol = newSymbols.get(i).sym;

                    if (returnSymbol != null) {

                        return returnSymbol;

                    }

				}

			}

		} catch (Exception e) {

		    if (error_msg_count % 1000 == 0) {

		        logger.info("Error (msg every 1000 occurrences) while getting symbol in VectorFilterExpressionLegend", e);

		        error_msg_count = 0;

		    }

		    error_msg_count++;

		}

		if (useDefaultSymbol)

			return getDefaultSymbol();

		return null;

	}

	/**

	 * Tells whether the input object is considered true.

	 * Basically, it is false if it has an empty value

	 * (FALSE, null, 0, "")

	 *

     * @param result

     * @return

     */

    private boolean isConsideredTrue(Object res) {

        if (res == null) {

            return false;

        }

        if (res instanceof Boolean) {

            return ((Boolean) res).booleanValue();

        }

        if (res instanceof Number) {

            return ((Number) res).doubleValue() != 0d;

        }

        if (res instanceof String) {

            return ((String) res).length() > 0;

        }

        // Because it is not null

        return true;

    }

	public void addSymbol(Object key, ISymbol symbol) {

		newSymbols.add(new Item((String)key.toString(),

				symbol));

	}

	public void clear() {

		newSymbols.clear();

	}

	public void resetItems() {

	    newSymbols = new ArrayList<Item>() {

            private static final long serialVersionUID = 1L;

            public int indexOf(String expr) {

                return super.indexOf(new Item(expr, null));

            }

	    };

	}

	public void delSymbol(Object key) {

		ISymbol mySymbol = null;

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

			if (newSymbols.get(i).evaluator.getSQL().equals(key))

				newSymbols.remove(i);

		}

		fireClassifiedSymbolChangeEvent(new SymbolLegendEvent(mySymbol,null));

	}

	public void replace(ISymbol oldSymbol, ISymbol newSymbol) {

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

			if (newSymbols.get(i).sym.equals(oldSymbol))

				newSymbols.get(i).sym = newSymbol;

		}

		fireClassifiedSymbolChangeEvent(new SymbolLegendEvent(oldSymbol,newSymbol));

	}

	public String[] getDescriptions() {

		String[] descriptions = new String[newSymbols.size()];

		ISymbol[] auxSym = getSymbols();

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

			descriptions[i] = auxSym[i].getDescription();

		return descriptions;

	}

	public ISymbol[] getSymbols() {

		if (newSymbols != null) {

			ISymbol[] mySymbols = new ISymbol[newSymbols.size()];

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

				mySymbols[i] = newSymbols.get(i).sym;

			}

			return mySymbols;

		}

		return null;

	}

	public ISymbol getDefaultSymbol() {

		if(defaultSymbol==null) {

		    defaultSymbol = MapContextLocator.getSymbolManager(

		        ).createSymbol(shapeType);

			fireDefaultSymbolChangedEvent(new SymbolLegendEvent(null, defaultSymbol));

		}

		return defaultSymbol;

	}

	public String getClassName() {

		return getClass().getName();

	}

	public int getShapeType() {

		return shapeType;

	}

	public boolean isUseDefaultSymbol() {

		return useDefaultSymbol;

	}

	public void setDefaultSymbol(ISymbol s) throws IllegalArgumentException {

		if (s == null) throw new NullPointerException("Default symbol cannot be null");

		ISymbol old = defaultSymbol;

		defaultSymbol = s;

		fireDefaultSymbolChangedEvent(new SymbolLegendEvent(old, defaultSymbol));

	}

	public void setShapeType(int shapeType) {

		if (this.shapeType != shapeType) {

		    ISymbol sym = MapContextLocator.getSymbolManager(

		        ).createSymbol(shapeType);

			setDefaultSymbol(sym);

			this.shapeType = shapeType;

		}

	}

	public void useDefaultSymbol(boolean b) {

		useDefaultSymbol = b;

	}

	public Object[] getValues() {

		if (newSymbols != null) {

			Object[] myObjects = new Object[newSymbols.size()];

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

				myObjects[i] = newSymbols.get(i).getStringExpression();

			}

			return myObjects;

		}

		return null;

	}

    public static boolean isPolygonal(int ty) {

        GeometryManager geomManager = GeometryLocator.getGeometryManager();

        return geomManager.isSubtype(Geometry.TYPES.MULTISURFACE, ty) || 

            geomManager.isSubtype(Geometry.TYPES.SURFACE, ty);

    }

    public static boolean isLinear(int ty) {

        GeometryManager geomManager = GeometryLocator.getGeometryManager();

        return geomManager.isSubtype(Geometry.TYPES.MULTICURVE, ty) || 

            geomManager.isSubtype(Geometry.TYPES.CURVE, ty);

    }

    public static boolean isPoint(int ty) {

        GeometryManager geomManager = GeometryLocator.getGeometryManager();

        return geomManager.isSubtype(Geometry.TYPES.MULTIPOINT, ty) || 

            geomManager.isSubtype(Geometry.TYPES.POINT, ty);

    }

    public void removeDefaultSymbol() {

    }

    // =============================

    public static class RegisterPersistence implements Callable {

        public Object call() throws Exception {

            PersistenceManager manager = ToolsLocator.getPersistenceManager();

            if (manager.getDefinition(

                FILTER_EXPRESSION_LEGEND_PERSISTENCE_DEFINITION_NAME) == null) {

                DynStruct definition = manager

                    .addDefinition(VectorFilterExpressionLegend.class,

                        FILTER_EXPRESSION_LEGEND_PERSISTENCE_DEFINITION_NAME,

                        FILTER_EXPRESSION_LEGEND_PERSISTENCE_DEFINITION_NAME

                        + " Persistence definition", null, null);

                definition.extend(manager.getDefinition(

                    AbstractClassifiedVectorLegend

                    .CLASSIFIED_VECTOR_LEGEND_PERSISTENCE_DEFINITION_NAME));

                definition.addDynFieldBoolean("useDefaultSymbol")

                .setMandatory(true);

                definition.addDynFieldObject("defaultSymbol")

                .setClassOfValue(ISymbol.class).setMandatory(true);

                definition.addDynFieldInt("shapeType")

                .setMandatory(true);

                definition.addDynFieldArray("itemSymbolArray")

                .setClassOfItems(ISymbol.class);

                definition.addDynFieldArray("itemStringArray")

                .setClassOfItems(String.class);

            }

            return Boolean.TRUE;

        }

    }

    public static class RegisterLegend implements Callable {

        public Object call() throws Exception {

            MapContextManager manager =

                MapContextLocator.getMapContextManager();

            manager.registerLegend(

                FILTER_EXPRESSION_LEGEND_NAME,

                VectorFilterExpressionLegend.class);

            return Boolean.TRUE;

        }

    }

    public void saveToState(PersistentState state) throws PersistenceException {

        super.saveToState(state);

        state.set("useDefaultSymbol", this.isUseDefaultSymbol());

        state.set("defaultSymbol", this.getDefaultSymbol());

        state.set("shapeType", this.getShapeType());

        ISymbol[] syms = this.getSymbols();

        if (syms == null) {

            syms = new ISymbol[0];

        }

        Object[] vals = this.getValues();

        String[] vals_str = null;

        if (vals == null) {

            vals_str = new String[0];

        } else {

            vals_str = new String[vals.length];

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

                String aux = ((vals[i] == null) ? null : vals[i].toString());

                // Prevents saving localized version of 'Default'

                aux = translateDefault(aux, false);

                vals_str[i] = aux;

            }

        }

        state.set("itemSymbolArray", syms);

        state.set("itemStringArray", vals_str);

    }

    public void loadFromState(PersistentState state)

        throws PersistenceException {

        super.loadFromState(state);

        this.setShapeType(state.getInt("shapeType"));

        Boolean b = state.getBoolean("useDefaultSymbol");

        this.useDefaultSymbol(b);

        ISymbol defsym = (ISymbol) state.get("defaultSymbol");

        this.setDefaultSymbol(defsym);

        String[] strs = state.getStringArray("itemStringArray");

        ISymbol[] syms = (ISymbol[]) state.getArray("itemSymbolArray",

            ISymbol.class);

        if (strs.length != syms.length) {

            logger.info("VectorFilterExpressionLegend - load state - Different size in arrays: " + strs.length + ", " + syms.length);

        }

        int nmin = Math.min(strs.length, syms.length);

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

            String aux = strs[i];

            aux = translateDefault(aux, true);

            this.addSymbol(aux, syms[i]);

        }

    }

    /**

     * Utility method to (un)translate the word 'Default'

     * @param aux

     * @param forward

     * If TRUE, then translate (Default -> Por defecto)

     * If FALSE then untranslate (Por defecto -> Default)

     * @return

     */

    private String translateDefault(String aux, boolean forward) {

        if (aux == null) {

            return null;

        }

        if (forward && aux.compareTo(NON_I18N_DEFAULT) == 0) {

            return I18N_DEFAULT;

        }

        if (!forward && aux.compareTo(I18N_DEFAULT) == 0) {

            return NON_I18N_DEFAULT;

        }

        return aux;

    }

    public Object clone() throws CloneNotSupportedException {

        VectorFilterExpressionLegend resp =

            (VectorFilterExpressionLegend) super.clone();

        Object[] vals = this.getValues();

        ISymbol[] syms = this.getSymbols();

        if (vals != null && syms != null) {

            resp.resetItems();

            int n = Math.min(vals.length, syms.length);

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

                resp.addSymbol(

                    vals[i],

                    (ISymbol) syms[i].clone());

            }

        }

        ISymbol sym = this.getDefaultSymbol();

        sym = (ISymbol) sym.clone();

        resp.setDefaultSymbol(sym);

        return resp;

    }

  public static void selfRegister() {

    Caller caller = new DefaultCaller();

    caller.add(new VectorFilterExpressionLegend.RegisterLegend());

    caller.add(new VectorFilterExpressionLegend.RegisterPersistence());

    if (!caller.call()) {

      throw new RuntimeException(

              "Can't register VectorFilterExpressionLegend",

              caller.getException()

      );

    }

    MapContextManager mcoman = MapContextLocator.getMapContextManager();

    mcoman.registerLegendWriter(

        VectorFilterExpressionLegend.class,

            SymbolManager.LEGEND_FILE_EXTENSION.substring(1),

            PersistenceBasedLegendWriter.class);

  }

}

/* 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 progra/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2020 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.symbology.gui.layerproperties;

import java.awt.Component;

import javax.swing.AbstractCellEditor;

import javax.swing.JTable;

import javax.swing.table.TableCellEditor;

import org.gvsig.expressionevaluator.Expression;

import org.gvsig.expressionevaluator.ExpressionUtils;

import org.gvsig.expressionevaluator.swing.ExpressionEvaluatorSwingLocator;

import org.gvsig.expressionevaluator.swing.ExpressionEvaluatorSwingManager;

import org.gvsig.expressionevaluator.swing.JExpressionPicker;

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

import org.gvsig.fmap.dal.swing.DALSwingLocator;

import org.gvsig.fmap.dal.swing.DataSwingManager;

/**

 * Cell Editor for expressions. It controls the edition events in an expression

 * column of the table

 *

 * @author gvSIG Team

 */

public class ExpressionFieldCellEditor 

        extends AbstractCellEditor

        implements TableCellEditor 

  {

  private final JExpressionPicker picker;

	public ExpressionFieldCellEditor(FeatureStore store) {

    ExpressionEvaluatorSwingManager manager = ExpressionEvaluatorSwingLocator.getManager();

    this.picker = manager.createJExpressionPicker();

    if( store != null ) {

      DataSwingManager dataSwingManager = DALSwingLocator.getManager();    

      dataSwingManager.configureExpressionBuilder(picker, store);  

    }

	}

  @Override

  public Object getCellEditorValue() {

    Expression value = this.picker.getExpression();

    if( value == null ) {

      return null;

    }

    return value.getPhrase();

  }

  @Override

  public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {

    if( value instanceof String ) {

      this.picker.setExpression(ExpressionUtils.createExpression((String) value));

    } else {

      this.picker.setExpression(null);

    }

    return this.picker.asJComponent();

  }

}

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2020 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.symbology.gui.layerproperties;

import java.awt.event.ActionEvent;

import java.io.File;

import java.io.IOException;

import java.net.URL;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import javax.swing.ImageIcon;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import org.apache.commons.lang3.StringUtils;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.project.documents.view.legend.gui.Categories;

import org.gvsig.app.project.documents.view.legend.gui.ILegendPanel;

import org.gvsig.app.project.documents.view.legend.gui.SymbolTable;

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

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

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

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

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.operations.ClassifiableVectorial;

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.fmap.mapcontext.rendering.legend.ILegend;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.i18n.Messages;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.fill.impl.PictureFillSymbol;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.IMarkerFillPropertiesStyle;

import org.gvsig.symbology.fmap.rendering.VectorFilterExpressionLegend;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.i18n.I18nManager;

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

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

import org.gvsig.tools.swing.api.windowmanager.Dialog;

import org.gvsig.tools.swing.api.windowmanager.WindowManager;

import org.gvsig.tools.swing.api.windowmanager.WindowManager_v2;

/**

 * Implements the JPanel that shows the properties of a

 * VectorialFilterExpressionLegend in order to allows the user to modify its

 * characteristics

 *

 * @author gvSIG Team

 *

 */

@SuppressWarnings("UseSpecificCatch")

public class VectorFilterExpressionPanel2

        extends VectorFilterExpressionPanelView

        implements ILegendPanel {

  private static final Logger LOGGER = LoggerFactory.getLogger(VectorFilterExpressionPanel2.class);

  private VectorFilterExpressionLegend theLegend;

  private VectorFilterExpressionLegend auxLegend;

  private ClassifiableVectorial layer;

  private PictureFillSymbol previewSymbol;

  private SymbolTable symbolTable;

  private int shapeType;

  private SymbolPickerController defaultSymbolPrev;

  /**

   * This is the default constructor

   */

  public VectorFilterExpressionPanel2() {

    super();

    initComponents();

  }

  /**

   * This method initializes this

   */

  private void initComponents() {

    ToolsSwingManager toolsSwingManager = ToolsSwingLocator.getToolsSwingManager();

    toolsSwingManager.translate(this.btnAdd);

    toolsSwingManager.translate(this.btnRemove);

    toolsSwingManager.translate(this.btnRemoveAll);

    toolsSwingManager.translate(this.btnDown);

    toolsSwingManager.translate(this.btnUp);

    toolsSwingManager.translate(this.chkDefaultValues);

    this.defaultSymbolPrev = new SymbolPickerController(

            this.btnDefaultValuesPreview, 

            null, 

            shapeType, 

            null

    );

    this.btnUp.setIcon(IconThemeHelper.getImageIcon("symbol-layer-move-up"));

    this.btnDown.setIcon(IconThemeHelper.getImageIcon("symbol-layer-move-down"));

    this.btnUp.setText("");

    this.btnDown.setText("");

    this.btnUp.addActionListener((ActionEvent e) -> {

      doUp();

    });

    this.btnDown.addActionListener((ActionEvent e) -> {

      doDown();

    });

    this.btnAdd.addActionListener((ActionEvent e) -> {

      doAdd();

    });

    this.btnRemove.addActionListener((ActionEvent e) -> {

      doRemove();

    });

    this.btnRemoveAll.addActionListener((ActionEvent e) -> {

      doRemoveAll();

    });

  }

  @Override

  public String getDescription() {

    return Messages.getText(

            "shows_the_elements_of_the_layer_depending_on_the_value_of_a_filter_expression") + ".";

  }

  public ISymbol getIconSymbol() {

    if (previewSymbol == null) {

      try {

        previewSymbol = new PictureFillSymbol();

        URL resource = this.getClass().getClassLoader().getResource("images/legend/legend-overview-vectorial-unique-value.png");

        if( resource == null ) {

          return null;

        }

        previewSymbol.setImage(resource);

        previewSymbol.getMarkerFillProperties().setFillStyle(

                IMarkerFillPropertiesStyle.SINGLE_CENTERED_SYMBOL

        );

      } catch (IOException e) {

        return null;

      }

    }

    return previewSymbol;

  }

  @Override

  public ILegend getLegend() {

    auxLegend.clear();

    fillSymbolListFromTable();

    theLegend = (VectorFilterExpressionLegend) auxLegend.cloneLegend();

    if (defaultSymbolPrev.get() != null) {

      theLegend.setDefaultSymbol(defaultSymbolPrev.get());

    }

    theLegend.useDefaultSymbol(chkDefaultValues.isSelected());

    return theLegend;

  }

  /**

   * Fills the list of symbols of the legend

   */

  private void fillSymbolListFromTable() {

    Object clave;

    ISymbol theSymbol;

    FLyrVect m = (FLyrVect) layer;

    try {

      if (auxLegend.getClassifyingFieldNames() != null) {

        String[] fNames = auxLegend.getClassifyingFieldNames();

        int[] fieldTypes = new int[auxLegend.getClassifyingFieldNames().length];

        FeatureStore fsto = (FeatureStore) m.getDataStore();

        FeatureType fty = fsto.getDefaultFeatureType();

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

          fieldTypes[i] = fty.getAttributeDescriptor(fNames[i]).getType();

        }

        auxLegend.setClassifyingFieldTypes(fieldTypes);

      }

    } catch (Exception e) {

    }

    auxLegend.useDefaultSymbol(chkDefaultValues.isSelected());

    for (int row = 0; row < symbolTable.getRowCount(); row++) {

      clave = symbolTable.getFieldValue(row, 1);

      theSymbol = (ISymbol) symbolTable.getFieldValue(row, 0);

      theSymbol.setDescription((String) symbolTable.getFieldValue(row, 2));

      auxLegend.addSymbol(clave, theSymbol);

    }

    if (chkDefaultValues.isSelected()) {

      if (defaultSymbolPrev.get() != null) {

        String description = VectorFilterExpressionLegend.I18N_DEFAULT;

        defaultSymbolPrev.get().setDescription(description);

        auxLegend.addSymbol(

                description, defaultSymbolPrev.get());

      }

    }

  }

  @Override

  public Class<VectorFilterExpressionLegend> getLegendClass() {

    return VectorFilterExpressionLegend.class;

  }

  @Override

  public JPanel getPanel() {

    return this;

  }

  @Override

  public Class<Categories> getParentClass() {

    return Categories.class;

  }

  @Override

  public String getTitle() {

    return Messages.getText("expressions");

  }

  @Override

  public boolean isSuitableFor(FLayer layer) {

    FLyrVect lVect = (FLyrVect) layer;

    try {

      return VectorFilterExpressionLegend.isPoint(lVect.getShapeType())

              || VectorFilterExpressionLegend.isLinear(lVect.getShapeType())

              || VectorFilterExpressionLegend.isPolygonal(lVect.getShapeType());

    } catch (Exception e) {

      return false;

    }

  }

  @Override

  public void setData(FLayer lyr, ILegend legend) {

    this.layer = (ClassifiableVectorial) lyr;

    shapeType = 0;

    try {

      shapeType = this.layer.getGeometryType().getType();

    } catch (ReadException e) {

      LOGGER.warn("Error while getting layer shp type", e);

      ApplicationLocator.getManager().message(

              Messages.getText("generating_intervals"),

              JOptionPane.ERROR_MESSAGE);

    }

    this.defaultSymbolPrev = new SymbolPickerController(this.btnDefaultValuesPreview, null, shapeType, null);

    symbolTable = new SymbolTable(this.tblSymbols, this, "expressions", shapeType);

    doUpdateCellEditor();

    if (legend instanceof VectorFilterExpressionLegend) {

      auxLegend = (VectorFilterExpressionLegend) legend.cloneLegend();

      if (auxLegend.isUseDefaultSymbol()) {

        // Default must not be in table

        fillTableSkipDefault(auxLegend);

      } else {

        symbolTable.fillTableFromSymbolList(

                auxLegend.getSymbols(),

                auxLegend.getValues(),

                auxLegend.getDescriptions());

      }

    } else {

      auxLegend = new VectorFilterExpressionLegend();

      auxLegend.setShapeType(shapeType);

    }

    defaultSymbolPrev.set(auxLegend.getDefaultSymbol());

    this.chkDefaultValues.setSelected(auxLegend.isUseDefaultSymbol());

  }

  private void doUpdateCellEditor() {

      try {

        ExpressionFieldCellEditor cellEditor = new ExpressionFieldCellEditor(

                ((FLyrVect)layer).getFeatureStore()

        );

        symbolTable.setCellEditor(cellEditor);

      } catch(Exception ex) {

        LOGGER.debug("Can't update cell editors",ex);

      }    

  }

  private void doUp() {

    int[] indices = symbolTable.getSelectedRows();

    if (indices.length > 0) {

      int classIndex = indices[0];

      int targetPos = Math.max(0, classIndex - 1);

      symbolTable.moveUpRows(classIndex, targetPos, indices.length);

    }

  }

  private void doDown() {

    int[] indices = symbolTable.getSelectedRows();

    if (indices.length > 0) {

      int classIndex = indices[indices.length - 1];

      int targetPos = Math.min(symbolTable.getRowCount() - 1, classIndex + 1);

      symbolTable.moveDownRows(classIndex, targetPos, indices.length);

    }

  }

  private void doAdd() {

    FLyrVect vect = (FLyrVect) layer;

    final FeatureStore fsto = vect.getFeatureStore();

    final FeatureType fty = fsto.getDefaultFeatureTypeQuietly();

    final int shptype = fty.getDefaultGeometryAttribute().getGeomType().getType();

    final I18nManager i18n = ToolsLocator.getI18nManager();

    final ExpressionSymbolPanel esp = new ExpressionSymbolPanel(fsto, shptype, previewSymbol);

    final WindowManager_v2 windowManager = (WindowManager_v2) ToolsSwingLocator.getWindowManager();

    final Dialog dialog = windowManager.createDialog(

            esp,

            i18n.getTranslation("expression_creator"),

            "",

            WindowManager_v2.BUTTONS_OK_CANCEL

    );

    dialog.addActionListener((ActionEvent e1) -> {

      if (dialog.getAction() != WindowManager_v2.BUTTON_OK) {

        return;

      }

      String expr = esp.getExpression();

      if (StringUtils.isBlank(expr)) {

        ApplicationLocator.getManager().messageDialog(

                Messages.getText("error_validating_filter_query"),

                Messages.getText("error"),

                JOptionPane.ERROR_MESSAGE);

        return;

      }

      ISymbol sym = esp.getSymbol();

      this.addClassFieldNames(fty);

      auxLegend.addSymbol(expr, sym);

      symbolTable.removeAllItems();

      doUpdateCellEditor();

      fillTableSkipDefault(auxLegend);

      repaint();

    });

    dialog.show(WindowManager.MODE.DIALOG);

  }

  private void doRemove() {

    if (symbolTable.getSelectedRowElements() == null) {

      JOptionPane.showMessageDialog(this, Messages.getText("select_one_row"));

    } else {

      String my_expr = (String) symbolTable.getSelectedRowElements()[1];

      auxLegend.delSymbol(my_expr);

      symbolTable.removeAllItems();

      doUpdateCellEditor();

      fillTableSkipDefault(auxLegend);

      repaint();

    }

  }

  private void doRemoveAll() {

      auxLegend.clear();

      symbolTable.removeAllItems();

      doUpdateCellEditor();

      fillTableSkipDefault(auxLegend);

      repaint();

  }

  private void addClassFieldNames(FeatureType ft) {

    FeatureAttributeDescriptor[] atts = ft.getAttributeDescriptors();

    String[] nn = new String[atts.length];

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

      nn[i] = atts[i].getName();

    }

    addClassFieldNames(nn);

  }

  /**

   * Adds new classifying field names to the legend when a new expression is

   * created or an existing one is modified

   *

   * @param fieldNamesExpression

   */

  private void addClassFieldNames(String[] fieldNamesExpression) {

    boolean appears;

    List<String> myFieldNames = new ArrayList<>();

    if (auxLegend.getClassifyingFieldNames() != null) {

      myFieldNames.addAll(Arrays.asList(auxLegend.getClassifyingFieldNames()));

      for (String fieldNamesExpression1 : fieldNamesExpression) {

        appears = false;

        for (String classifyingFieldName : auxLegend.getClassifyingFieldNames()) {

          if (classifyingFieldName.compareTo((String) fieldNamesExpression1) == 0) {

            appears = true;

          }

        }

        if (!appears) {

          myFieldNames.add((String) fieldNamesExpression1);

        }

      }

      auxLegend.setClassifyingFieldNames(

              myFieldNames.toArray(new String[myFieldNames.size()])

      );

    } else {

      for (String fieldNamesExpression1 : fieldNamesExpression) {

        myFieldNames.add((String) fieldNamesExpression1);

      }

      auxLegend.setClassifyingFieldNames(myFieldNames.toArray(new String[myFieldNames.size()]));

    }

  }

  @Override

  public ImageIcon getIcon() {

    ImageIcon icon = IconThemeHelper.getImageIcon("legend-overview-vector-filter-expression");

    return icon;

  }

  private void fillTableSkipDefault(VectorFilterExpressionLegend leg) {

    Object[] src_expr = leg.getValues();

    List<Integer> rem_ind = new ArrayList<>();

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

      if (VectorFilterExpressionLegend.I18N_DEFAULT.

              compareToIgnoreCase((String) src_expr[i]) == 0) {

        rem_ind.add(i);

      }

    }

    ISymbol[] src_syms = leg.getSymbols();

    String[] src_descs = leg.getDescriptions();

    // Object[] src_expr

    List<ISymbol> syms = new ArrayList<>();

    List<Object> vals = new ArrayList<>();

    List<String> descs = new ArrayList<>();

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

      if (!isIn(i, rem_ind)) {

        syms.add(src_syms[i]);

        vals.add(src_expr[i]);

        descs.add(src_descs[i]);

      }

    }

    symbolTable.fillTableFromSymbolList(

            syms.toArray(new ISymbol[0]),

            vals.toArray(new Object[0]),

            descs.toArray(new String[0]));

  }

  /**

   * @param i

   * @param rem_ind

   * @return

   */

  private boolean isIn(int n, List<Integer> list) {

    if (list == null || list.isEmpty()) {

      return false;

    }

    for (Integer item : list) {

      if( item!=null && item==n ) {

        return true;

      }

    }

    return false;

  }

}

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