Application: gvSIG desktop

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

import java.awt.Dialog;

import java.awt.Window;

import org.gvsig.expressionevaluator.ExpressionBuilder;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

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

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

import org.gvsig.expressionevaluator.swing.JExpressionBuilder;

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.tools.ToolsLocator;

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

/**

 *

 * @author jjdelcerro

 */

@SuppressWarnings("UseSpecificCatch")

public class ViewCaptureRectangleElement 

        extends AbstractElement

        implements SimpleElement, CalculatedElement

{

    private ViewCaptureRectanglePanel aditionalPanel;

    public ViewCaptureRectangleElement() {

        super(

                ToolsLocator.getI18nManager().getTranslation("_Capture_rectangle"), 

                "expressionbuilder-element-view-capture-bbox"

        );

    }

    @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(

                            ExpressionBuilder.Config.geometry_type_support,

                            ExpressionBuilder.GeometrySupportType.WKT

                    );

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

                } else {

                    String wkt = geom.convertToWKT();

                    return "'" + wkt + "'";

                }

            } else {

                if (this.aditionalPanel.insertAsGeometry()) {

                    builder.getConfig().set(

                            ExpressionBuilder.Config.geometry_type_support,

                            ExpressionBuilder.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(JExpressionBuilder expressionBuilder) {

        if (aditionalPanel == null) {

            this.aditionalPanel = new ViewCaptureRectanglePanel();

        }

        return this.aditionalPanel;

    }

    public boolean isEnabled() {

        return ! isModalDialogShowing();

    }

    private static boolean isModalDialogShowing() {

        Window[] windows = Window.getWindows();

        if (windows != null) { // don't rely on current implementation, which at least returns [0].

            for (Window w : windows) {

                if (w.isShowing() && w instanceof Dialog && ((Dialog) w).isModal()) {

                    return true;

                }

            }

        }

        return false;

    }

}