Application: gvSIG desktop

package org.gvsig.app.project.documents.view.expressionevaluator;

import org.gvsig.expressionevaluator.ExpressionBuilder;

import org.gvsig.expressionevaluator.ExpressionBuilder.Config;

import org.gvsig.expressionevaluator.ExpressionBuilder.GeometrySupportType;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.swing.Element.CalculatedElement;

import org.gvsig.expressionevaluator.swing.Element.SimpleElement;

import org.gvsig.expressionevaluator.swing.spi.AbstractElement;

import org.gvsig.fmap.geom.Geometry;

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

/**

 *

 * @author jjdelcerro

 */

    @SuppressWarnings("UseSpecificCatch")

public class ViewCapturePointElement

        extends AbstractElement

        implements SimpleElement, CalculatedElement 

    {

    private ViewCapturePointPanel aditionalPanel;

    public ViewCapturePointElement() {

        super("Capture point", "Capture a point in the current view", "expressionbuilder-element-view-capture-point");

    }

    @Override

    public Object getValue() {

        if (this.aditionalPanel == null) {

            return null;

        }

        try {

            Geometry geom = this.aditionalPanel.getGeometry();

            if (geom == null) {

                return null;

            }

            ExpressionBuilder builder = ExpressionEvaluatorLocator.getManager().createExpressionBuilder();

            if (this.aditionalPanel.insertAsWKT()) {

                if (this.aditionalPanel.insertAsGeometry()) {

                    builder.getConfig().set(

                            Config.geometry_type_support,

                            GeometrySupportType.WKT

                    );

                    return builder.geometry(geom, geom.getProjection()).toString();

                } else {

                    String wkt = geom.convertToWKT();

                    return "'" + wkt + "'";

                }

            } else {

                if (this.aditionalPanel.insertAsGeometry()) {

                    builder.getConfig().set(

                            Config.geometry_type_support,

                            GeometrySupportType.WKB

                    );

                    return builder.geometry(geom, geom.getProjection()).toString();

                } else {

                    byte[] wkb = geom.convertToWKB();

                    return builder.bytearray_hex(wkb);

                }

            }

        } catch (Exception ex) {

            LOGGER.warn("Can't get point value.", ex);

            return null;

        }

    }

    @Override

    public Component getAditionalPanel() {

        if (aditionalPanel == null) {

            this.aditionalPanel = new ViewCapturePointPanel();

        }

        return this.aditionalPanel;

    }

}