Application: gvSIG desktop

/*

 * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 */

package com.iver.example.tools;

import java.awt.Cursor;

import java.awt.geom.Point2D;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.hardcode.gdbms.engine.data.DataSource;

import com.hardcode.gdbms.engine.values.Value;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.exceptions.visitors.VisitorException;

import com.iver.cit.gvsig.fmap.MapControl;

import com.iver.cit.gvsig.fmap.layers.FBitSet;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.FLayers;

import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData;

import com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData;

import com.iver.cit.gvsig.fmap.operations.strategies.QueryByPointVisitor;

import com.iver.cit.gvsig.fmap.tools.BehaviorException;

import com.iver.cit.gvsig.fmap.tools.Events.PointEvent;

import com.iver.cit.gvsig.fmap.tools.Listeners.PointListener;

import com.iver.example.dialogs.MyInfoDlg;

public class MyInfoListener implements PointListener {

    private MapControl mapCtrl;

    private Cursor cur = java.awt.Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);

    public MyInfoListener(MapControl mc) {

        this.mapCtrl = mc;

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)

     * The PointEvent method bring you a point in pixel coordinates. You

     * need to transform it to world coordinates. The class to do conversions

     * is ViewPort, obtained thru the MapContext of mapCtrl.

     */

    public void point(PointEvent event) throws BehaviorException {

        Point2D pReal = mapCtrl.getMapContext().getViewPort().toMapPoint(event.getPoint());

        MyInfoDlg dlg = new MyInfoDlg();

        dlg = (MyInfoDlg) PluginServices.getMDIManager().addWindow(dlg);

        /* We will use a Visitor pattern to query the layer and

         * to obtain a FBitSet (the selected items). Then, we iterate thru

         * selection and extract the needed information from the dataSource.

         */

        QueryByPointVisitor visitor = new QueryByPointVisitor();

        FLayers lyrs = mapCtrl.getMapContext().getLayers();

        FLayer lyrProvin = lyrs.getLayer("Provin.shp");

        visitor.setLayer(lyrProvin);

        visitor.setQueriedPoint(pReal);

        visitor.setTolerance(5.0);

        try {

            ((VectorialData) lyrProvin).process(visitor);

            FBitSet selection = visitor.getBitSet();

            DataSource ds = ((AlphanumericData) lyrProvin).getRecordset();

            ds.start();

            int idField = ds.getFieldIndexByName("NOM_PROVIN");

            int numReg = 0;

            Value strNomProvin = null;

            while ((numReg = selection.nextSetBit(numReg)) > 0)

            {

                strNomProvin = ds.getFieldValue(numReg, idField);

                numReg++;

            }

            ds.stop();

            dlg.setProvince(strNomProvin.toString());

            // dlg.setProvince("En un lugar de la Mancha");

        } catch (ReadDriverException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                } catch (VisitorException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                }

    }

    public Cursor getCursor() {

        return cur;

    }

    public boolean cancelDrawing() {

        return false;

    }

        public void pointDoubleClick(PointEvent event) throws BehaviorException {

                // TODO Auto-generated method stub

        }

}