/*
* 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.action.menu;
import org.geomajas.gwt.client.action.MenuAction;
import org.geomajas.gwt.client.gfx.MenuContext;
import org.geomajas.gwt.client.i18n.I18nProvider;
import org.geomajas.gwt.client.map.feature.FeatureTransaction;
import org.geomajas.gwt.client.map.feature.TransactionGeomIndex;
import org.geomajas.gwt.client.map.feature.TransactionGeomIndexUtil;
import org.geomajas.gwt.client.map.feature.operation.RemoveCoordinateOp;
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.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.menu.Menu;
import com.smartgwt.client.widgets.menu.MenuItem;
import com.smartgwt.client.widgets.menu.MenuItemIfFunction;
import com.smartgwt.client.widgets.menu.events.MenuItemClickEvent;
/**
* Remove an existing point from the geometry at a given index.
*
* @author Pieter De Graef
*/
public class RemovePointAction extends MenuAction implements MenuItemIfFunction {
private MapWidget mapWidget;
private TransactionGeomIndex index;
/**
* @param mapWidget
* The map on which editing is going on.
*/
public RemovePointAction(MapWidget mapWidget) {
super(I18nProvider.getMenu().removePoint(), "[ISOMORPHIC]/geomajas/osgeo/vertex-delete.png");
this.mapWidget = mapWidget;
setEnableIfCondition(this);
}
/**
* Remove an existing point from the geometry at a given index.
*
* @param event
* The {@link MenuItemClickEvent} from clicking the action.
*/
public void onClick(MenuItemClickEvent event) {
FeatureTransaction ft = mapWidget.getMapModel().getFeatureEditor().getFeatureTransaction();
if (ft != null && index != null) {
mapWidget.render(ft, RenderGroup.VECTOR, RenderStatus.DELETE);
RemoveCoordinateOp op = new RemoveCoordinateOp(index);
ft.execute(op);
mapWidget.render(ft, RenderGroup.VECTOR, RenderStatus.ALL);
}
}
/**
* Implementation of the <code>MenuItemIfFunction</code> interface. This will determine if the menu action should be
* enabled or not. In essence, this action will be enabled when the context menu event occurred on a vertex of the
* painted <code>FeatureTransaction</code>.
*/
public boolean execute(Canvas target, Menu menu, MenuItem item) {
FeatureTransaction featureTransaction = mapWidget.getMapModel().getFeatureEditor().getFeatureTransaction();
if (featureTransaction != null) {
MenuContext graphics = mapWidget.getMenuContext();
String targetId = graphics.getRightButtonName();
if (targetId != null && TransactionGeomIndexUtil.isVertex(targetId)) {
index = TransactionGeomIndexUtil.getIndex(targetId);
return true;
}
}
return false;
}
}