Application: gvSIG desktop » gvSIG legends: base legends

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    <modelVersion>4.0.0</modelVersion>

    <artifactId>org.gvsig.legend.vectorfilterexpression.app.mainplugin</artifactId>

    <name>${project.artifactId}</name>

    <version>1.0.228</version>

    <parent>

        <groupId>org.gvsig</groupId>

        <artifactId>org.gvsig.desktop</artifactId>

        <version>2.0.430</version>

    </parent>

    <url>https://devel.gvsig.org/redmine/projects/gvsig-base-legends</url>

    <scm>

        <connection>scm:svn:https://devel.gvsig.org/svn/gvsig-base-legends/org.gvsig.legend.vectorfilterexpression.app.mainplugin/tags/org.gvsig.legend.vectorfilterexpression.app.mainplugin-1.0.228</connection>

        <developerConnection>scm:svn:https://devel.gvsig.org/svn/gvsig-base-legends/org.gvsig.legend.vectorfilterexpression.app.mainplugin/tags/org.gvsig.legend.vectorfilterexpression.app.mainplugin-1.0.228</developerConnection>

        <url>scm:svn:https://devel.gvsig.org/svn/gvsig-base-legends/org.gvsig.legend.vectorfilterexpression.app.mainplugin/tags/org.gvsig.legend.vectorfilterexpression.app.mainplugin-1.0.228</url>

    </scm>

    <repositories>

        <repository>

            <id>gvsig-public-http-repository</id>

            <name>gvSIG maven public HTTP repository</name>

            <url>http://devel.gvsig.org/m2repo/j2se</url>

            <releases>

                <enabled>true</enabled>

                <updatePolicy>daily</updatePolicy>

                <checksumPolicy>warn</checksumPolicy>

            </releases>

            <snapshots>

                <enabled>true</enabled>

                <updatePolicy>daily</updatePolicy>

                <checksumPolicy>warn</checksumPolicy>

            </snapshots>

        </repository>

    </repositories>

    <description>Vector legend: Filter by expression. For each feature, the symbol is only visible if the expression is evaluated to true.</description>

    <build>

        <plugins>

            <plugin>

                <artifactId>maven-release-plugin</artifactId>

                <configuration>

                    <tagBase>https://devel.gvsig.org/svn/gvsig-base-legends/org.gvsig.legend.vectorfilterexpression.app.mainplugin/tags</tagBase>

                </configuration>

            </plugin>

        </plugins>

    </build>

    <dependencies>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.app.mainplugin</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.andami</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.symbology.lib.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.symbology.lib.impl</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.symbology.swing.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.fmap.mapcontext.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.utils</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.fmap.dal.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.i18n</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.fmap.geometry.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.tools.lib</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.ui</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.projection.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.metadata.lib.basic.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.compat.api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.tools.evaluator.sqljep</artifactId>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.tools.lib</artifactId>

            <scope>compile</scope>

        </dependency>

        <dependency>

            <groupId>org.gvsig</groupId>

            <artifactId>org.gvsig.tools.swing.api</artifactId>

        </dependency>

        <!--

        <dependency>

                <groupId>bsf</groupId>

                <artifactId>bsf</artifactId>

    <scope>compile</scope>

        </dependency>

        -->

    </dependencies>

    <properties>

        <gvsig.package.info.name>Vector legend: Filter by expression</gvsig.package.info.name>

        <gvsig.package.info.categories>View,Vector,Symbology</gvsig.package.info.categories>

        <gvsig.package.info.official>true</gvsig.package.info.official>

        <gvsig.package.info.dependencies>required: org.gvsig.app.mainplugin -ge 2.1.0-A</gvsig.package.info.dependencies>

        <gvsig.package.info.state>testing</gvsig.package.info.state>

        <gvsig.package.info.poolURL>https://devel.gvsig.org/download/projects/gvsig-base-legends/pool</gvsig.package.info.poolURL>

    </properties>

</project>

#Wed Oct 04 18:48:44 CEST 2023

buildNumber=233

org.gvsig.symbology.library.VectorFilterExpressionLibrary

<!--

    gvSIG. Desktop Geographic Information System.

    Copyright (C) 2007-2013 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.

-->

<assembly>

  <id>gvsig-plugin-package</id>

  <formats>

    <format>zip</format>

  </formats>

  <baseDirectory>${project.artifactId}</baseDirectory>

  <includeBaseDirectory>true</includeBaseDirectory>

  <files>

    <file>

      <source>target/${project.artifactId}-${project.version}.jar</source>

      <outputDirectory>lib</outputDirectory>

    </file>

    <file>

      <source>target/package.info</source>

    </file>

  </files>

  <fileSets>

    <fileSet>

      <directory>src/main/resources-plugin</directory>

      <outputDirectory>.</outputDirectory>

    </fileSet>

  </fileSets>

<!-- No dependencies

  <dependencySets>

    <dependencySet>

      <useProjectArtifact>false</useProjectArtifact>

      <useTransitiveDependencies>false</useTransitiveDependencies>

      <outputDirectory>lib</outputDirectory>

      <includes>

		<include>...</include>

      </includes>

    </dependencySet>

  </dependencySets>

-->

</assembly>

/**

 * 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.awt.Graphics2D;

import java.awt.image.BufferedImage;

import java.util.ArrayList;

import javax.swing.JOptionPane;

import org.cresques.cts.ICoordTrans;

import org.gvsig.app.ApplicationLocator;

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.dal.feature.FeatureSelection;

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

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.ViewPort;

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.symbology.fmap.mapcontext.rendering.legend.impl.DefaultFeatureDrawnNotification;

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.exception.BaseException;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

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

import org.gvsig.tools.task.Cancellable;

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) {

                I18nManager i18n = ToolsLocator.getI18nManager();

                String s;

                try{

                    s = featu.toJson().toString().replace("\n", " ");

                } catch (Throwable t) {

                    s=featu.toString();

                }

                logger.info("Error (msg every 1000 occurrences) while getting symbol in VectorFilterExpressionLegend Expression = ["+expr+"], Feature = ["+s+"]", e);

                error_msg_count = 0;

                ApplicationLocator.getManager().message(

                        i18n.getTranslation("_Error_in_expressions_legend")+

                                ". "+

                        i18n.getTranslation("_see_error_log_for_more_information")

                        , JOptionPane.WARNING_MESSAGE);

            }

            error_msg_count++;

            return getDefaultSymbol();

        }

        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);

    }

    @Override

    protected void drawFeatures(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel, ICoordTrans coordTrans, double dpi, DefaultFeatureDrawnNotification drawnNotification, FeatureSet featureSet, FeatureSelection selection) throws BaseException {

        error_msg_count = 0;

        super.drawFeatures(image, g, viewPort, cancel, coordTrans, dpi, drawnNotification, featureSet, selection); //To change body of generated methods, choose Tools | Templates.

    }

}

package org.gvsig.symbology.gui.layerproperties;

import com.jeta.forms.components.separator.TitledSeparator;

import com.jeta.open.i18n.I18NUtils;

import com.jgoodies.forms.layout.CellConstraints;

import com.jgoodies.forms.layout.FormLayout;

import java.awt.BorderLayout;

import java.awt.ComponentOrientation;

import java.awt.Container;

import java.awt.Dimension;

import javax.swing.Box;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

public class ExpressionSymbolPanelView extends JPanel

{

   TitledSeparator lblExpression = new TitledSeparator();

   TitledSeparator lblSymbolAndDescriptor = new TitledSeparator();

   JPanel pnlExpression = new JPanel();

   JButton btnSymbolPreview = new JButton();

   JTextArea txtSymbolDescription = new JTextArea();

   /**

    * Default constructor

    */

   public ExpressionSymbolPanelView()

   {

      initializePanel();

   }

   /**

    * Adds fill components to empty cells in the first row and first column of the grid.

    * This ensures that the grid spacing will be the same as shown in the designer.

    * @param cols an array of column indices in the first row where fill components should be added.

    * @param rows an array of row indices in the first column where fill components should be added.

    */

   void addFillComponents( Container panel, int[] cols, int[] rows )

   {

      Dimension filler = new Dimension(10,10);

      boolean filled_cell_11 = false;

      CellConstraints cc = new CellConstraints();

      if ( cols.length > 0 && rows.length > 0 )

      {

         if ( cols[0] == 1 && rows[0] == 1 )

         {

            /** add a rigid area  */

            panel.add( Box.createRigidArea( filler ), cc.xy(1,1) );

            filled_cell_11 = true;

         }

      }

      for( int index = 0; index < cols.length; index++ )

      {

         if ( cols[index] == 1 && filled_cell_11 )

         {

            continue;

         }

         panel.add( Box.createRigidArea( filler ), cc.xy(cols[index],1) );

      }

      for( int index = 0; index < rows.length; index++ )

      {

         if ( rows[index] == 1 && filled_cell_11 )

         {

            continue;

         }

         panel.add( Box.createRigidArea( filler ), cc.xy(1,rows[index]) );

      }

   }

   /**

    * Helper method to load an image file from the CLASSPATH

    * @param imageName the package and name of the file to load relative to the CLASSPATH

    * @return an ImageIcon instance with the specified image file

    * @throws IllegalArgumentException if the image resource cannot be loaded.

    */

   public ImageIcon loadImage( String imageName )

   {

      try

      {

         ClassLoader classloader = getClass().getClassLoader();

         java.net.URL url = classloader.getResource( imageName );

         if ( url != null )

         {

            ImageIcon icon = new ImageIcon( url );

            return icon;

         }

      }

      catch( Exception e )

      {

         e.printStackTrace();

      }

      throw new IllegalArgumentException( "Unable to load image: " + imageName );

   }

   /**

    * Method for recalculating the component orientation for 

    * right-to-left Locales.

    * @param orientation the component orientation to be applied

    */

   public void applyComponentOrientation( ComponentOrientation orientation )

   {

      // Not yet implemented...

      // I18NUtils.applyComponentOrientation(this, orientation);

      super.applyComponentOrientation(orientation);

   }

   public JPanel createPanel()

   {

      JPanel jpanel1 = new JPanel();

      FormLayout formlayout1 = new FormLayout("FILL:4DLU:NONE,FILL:DEFAULT:GROW(1.0),FILL:4DLU:NONE","CENTER:2DLU:NONE,CENTER:DEFAULT:NONE,CENTER:2DLU:NONE,FILL:50PX:GROW(1.0),CENTER:2DLU:NONE,CENTER:DEFAULT:NONE,CENTER:2DLU:NONE,FILL:DEFAULT:NONE,CENTER:2DLU:NONE");

      CellConstraints cc = new CellConstraints();

      jpanel1.setLayout(formlayout1);

      lblExpression.setName("lblExpression");

      lblExpression.setText("_Expression");

      jpanel1.add(lblExpression,cc.xy(2,2));

      lblSymbolAndDescriptor.setName("lblSymbolAndDescriptor");

      lblSymbolAndDescriptor.setText("_Symbol_and_description");

      jpanel1.add(lblSymbolAndDescriptor,cc.xy(2,6));

      pnlExpression.setName("pnlExpression");

      jpanel1.add(pnlExpression,cc.xy(2,4));

      jpanel1.add(createPanel1(),cc.xy(2,8));

      addFillComponents(jpanel1,new int[]{ 1,2,3 },new int[]{ 1,2,3,4,5,6,7,8,9 });

      return jpanel1;

   }

   public JPanel createPanel1()

   {

      JPanel jpanel1 = new JPanel();

      FormLayout formlayout1 = new FormLayout("FILL:35PX:NONE,FILL:4DLU:NONE,FILL:DEFAULT:GROW(1.0)","FILL:35PX:NONE");

      CellConstraints cc = new CellConstraints();

      jpanel1.setLayout(formlayout1);

      btnSymbolPreview.setName("btnSymbolPreview");

      jpanel1.add(btnSymbolPreview,new CellConstraints(1,1,1,1,CellConstraints.FILL,CellConstraints.FILL));

      txtSymbolDescription.setName("txtSymbolDescription");

      JScrollPane jscrollpane1 = new JScrollPane();

      jscrollpane1.setViewportView(txtSymbolDescription);

      jscrollpane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);

      jscrollpane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

      jpanel1.add(jscrollpane1,cc.xy(3,1));

      addFillComponents(jpanel1,new int[]{ 2 },new int[0]);

      return jpanel1;

   }

   /**

    * Initializer

    */

   protected void initializePanel()

   {

      setLayout(new BorderLayout());

      add(createPanel(), BorderLayout.CENTER);

   }

}

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                        <at name="bottom">2</at>

                        <at name="right">2</at>

                       </object>

                      </at>

                     </item>

                    </object>

                   </at>

                  </object>

                 </at>

                 <at name="actionCommand">...</at>

                 <at name="name">btnDown</at>

                 <at name="width">16</at>

                 <at name="text">...</at>

                 <at name="height">18</at>

                </object>

               </at>

              </object>

             </at>

            </object>

           </at>

          </item>

         </object>

        </at>

        <at name="properties">

         <object classname="com.jeta.forms.store.memento.PropertiesMemento">

          <at name="classname">com.jeta.forms.gui.form.GridView</at>

          <at name="properties">

           <object classname="com.jeta.forms.store.support.PropertyMap">

            <at name="border">

             <object classname="com.jeta.forms.store.properties.CompoundBorderProperty">

              <super classname="com.jeta.forms.store.properties.BorderProperty">

               <at name="name">border</at>

              </super>

              <at name="borders">

               <object classname="java.util.LinkedList"/>

              </at>

             </object>

            </at>

            <at name="name"/>