Application: gvSIG desktop

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

import org.cresques.cts.IProjection;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.ApplicationManager;

import org.gvsig.app.project.documents.Document;

import org.gvsig.app.project.documents.view.ViewDocument;

import org.gvsig.app.project.documents.view.ViewManager;

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

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

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

/**

 *

 * @author jjdelcerro

 */

@SuppressWarnings("UseSpecificCatch")

public class ViewTakeProjectionCodeElement 

        extends AbstractElement

        implements SimpleElement, ConstantElement

{

    public ViewTakeProjectionCodeElement() {

        super("Take projection code", "Take the projection code of the current view", "expressionbuilder-element-view-projection-code");

    }

    @Override

    public Object getValue() {

        ApplicationManager application = ApplicationLocator.getManager();

        ViewDocument viewDoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME);

        if( viewDoc == null ) {

            return null;

        }

        IProjection proj = viewDoc.getMapContext().getProjection();

        String[] proj_s = proj.getAbrev().split(":");

        try {

            int code = Integer.parseInt(proj_s[1]);

            return code;

        } catch(Exception ex) {

            return proj_s[1];

        }

    }

}