/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.gwt.client.controller.editing;
import org.geomajas.geometry.Coordinate;
import org.geomajas.gwt.client.map.feature.FeatureTransaction;
import org.geomajas.gwt.client.map.feature.TransactionGeomIndex;
import org.geomajas.gwt.client.spatial.geometry.LineString;
import org.geomajas.gwt.client.spatial.geometry.LinearRing;
import org.geomajas.gwt.client.spatial.geometry.MultiPolygon;
import org.geomajas.gwt.client.widget.MapWidget;
import org.geomajas.gwt.client.widget.MapWidget.RenderGroup;
import org.geomajas.gwt.client.widget.MapWidget.RenderStatus;
import com.google.gwt.event.dom.client.MouseEvent;
/**
* Editing controller for MultiPolygon geometries. Supports MultiPolygons with only one Polygon at the moment.
*
* @author Pieter De Graef
*/
public class MultiPolygonEditController extends PolygonEditController {
// -------------------------------------------------------------------------
// Constructor:
// -------------------------------------------------------------------------
public MultiPolygonEditController(MapWidget mapWidget, EditController parent) {
super(mapWidget, parent);
}
// -------------------------------------------------------------------------
// EditController implementation:
// -------------------------------------------------------------------------
public TransactionGeomIndex getGeometryIndex() {
if (index == null) {
index = new TransactionGeomIndex();
index.setExteriorRing(true);
index.setGeometryIndex(0);
index.setCoordinateIndex(0);
index.setFeatureIndex(0);
}
return index;
}
// -------------------------------------------------------------------------
// Private methods:
// -------------------------------------------------------------------------
protected void updateTempLines(FeatureTransaction featureTransaction, MouseEvent<?> event) {
if (featureTransaction.getNewFeatures() != null && featureTransaction.getNewFeatures().length > 0) {
if (tempLine1 == null) {
createTempLines(featureTransaction, event);
}
MultiPolygon multiPolygon = (MultiPolygon) getGeometryIndex().getGeometry(featureTransaction);
LinearRing ring = getGeometryIndex().getLinearRing(multiPolygon.getGeometryN(0));
if (ring != null) {
Coordinate[] coordinates = ring.getCoordinates();
if (coordinates != null && coordinates.length > 0) {
Coordinate lastCoordinate = coordinates[coordinates.length - 2];
LineString lineString1 = featureTransaction.getNewFeatures()[index.getFeatureIndex()].getGeometry()
.getGeometryFactory().createLineString(
new Coordinate[] {getTransformer().worldToPan(lastCoordinate),
getPanPosition(event)});
tempLine1.setGeometry(lineString1);
mapWidget.render(tempLine1, RenderGroup.VECTOR, RenderStatus.ALL);
LineString lineString2 = featureTransaction.getNewFeatures()[index.getFeatureIndex()].getGeometry()
.getGeometryFactory().createLineString(
new Coordinate[] {getTransformer().worldToPan(coordinates[0]),
getPanPosition(event)});
tempLine2.setGeometry(lineString2);
mapWidget.render(tempLine2, RenderGroup.VECTOR, RenderStatus.ALL);
}
}
}
}
}