/*
* 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.action.menu.AttributesAction;
import org.geomajas.gwt.client.action.menu.CancelEditingAction;
import org.geomajas.gwt.client.action.menu.InsertPointAction;
import org.geomajas.gwt.client.action.menu.InsertRingAction;
import org.geomajas.gwt.client.action.menu.RemovePointAction;
import org.geomajas.gwt.client.action.menu.RemoveRingAction;
import org.geomajas.gwt.client.action.menu.SaveEditingAction;
import org.geomajas.gwt.client.action.menu.ToggleEditModeAction;
import org.geomajas.gwt.client.action.menu.ToggleGeometricInfoAction;
import org.geomajas.gwt.client.action.menu.ToggleSnappingAction;
import org.geomajas.gwt.client.action.menu.UndoOperationAction;
import org.geomajas.gwt.client.controller.editing.EditController.EditMode;
import org.geomajas.gwt.client.gfx.paintable.GfxGeometry;
import org.geomajas.gwt.client.gfx.style.ShapeStyle;
import org.geomajas.gwt.client.map.feature.Feature;
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.AddCoordinateOp;
import org.geomajas.gwt.client.map.feature.operation.FeatureOperation;
import org.geomajas.gwt.client.map.feature.operation.SetCoordinateOp;
import org.geomajas.gwt.client.spatial.geometry.Geometry;
import org.geomajas.gwt.client.spatial.geometry.LineString;
import org.geomajas.gwt.client.spatial.geometry.LinearRing;
import org.geomajas.gwt.client.spatial.geometry.Polygon;
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.MouseDownEvent;
import com.google.gwt.event.dom.client.MouseEvent;
import com.google.gwt.event.dom.client.MouseMoveEvent;
import com.google.gwt.event.dom.client.MouseUpEvent;
import com.google.gwt.user.client.Event;
import com.smartgwt.client.widgets.menu.Menu;
import com.smartgwt.client.widgets.menu.MenuItemSeparator;
/**
* Editing controller for Polygon geometries.
*
* @author Pieter De Graef
*/
public class PolygonEditController extends EditController {
protected String dragTargetId;
protected FeatureTransaction dragTransaction;
protected GfxGeometry tempLine1;
protected GfxGeometry tempLine2;
protected TransactionGeomIndex index;
// -------------------------------------------------------------------------
// Constructor:
// -------------------------------------------------------------------------
public PolygonEditController(MapWidget mapWidget, EditController parent) {
super(mapWidget, parent);
}
// -------------------------------------------------------------------------
// EditController implementation:
// -------------------------------------------------------------------------
public Menu getContextMenu() {
if (menu == null) {
menu = new Menu();
menu.addItem(new AttributesAction(mapWidget));
menu.addItem(new MenuItemSeparator());
menu.addItem(new UndoOperationAction(mapWidget, this));
menu.addItem(new CancelEditingAction(mapWidget, (ParentEditController) parent));
menu.addItem(new SaveEditingAction(mapWidget, (ParentEditController) parent));
menu.addItem(new ToggleEditModeAction((ParentEditController) parent));
menu.addItem(new MenuItemSeparator());
menu.addItem(new InsertPointAction(mapWidget));
menu.addItem(new RemovePointAction(mapWidget));
menu.addItem(new MenuItemSeparator());
menu.addItem(new InsertRingAction(mapWidget, (ParentEditController) parent));
menu.addItem(new RemoveRingAction(mapWidget));
menu.addItem(new MenuItemSeparator());
menu.addItem(new ToggleGeometricInfoAction(this));
menu.addItem(new ToggleSnappingAction(getFeatureTransaction().getLayer(), this));
}
return menu;
}
public TransactionGeomIndex getGeometryIndex() {
if (index == null) {
index = new TransactionGeomIndex();
index.setFeatureIndex(0);
index.setCoordinateIndex(0);
index.setExteriorRing(true);
}
return index;
}
public void setGeometryIndex(TransactionGeomIndex geometryIndex) {
index = geometryIndex;
}
public void cleanup() {
removeTempLines();
}
public boolean isBusy() {
// busy when inserting or dragging has started
return getEditMode() == EditMode.INSERT_MODE || (getEditMode() == EditMode.DRAG_MODE && dragTargetId != null);
}
// -------------------------------------------------------------------------
// MapController implementation:
// -------------------------------------------------------------------------
public void onMouseDown(MouseDownEvent event) {
FeatureTransaction featureTransaction = getFeatureTransaction();
if (featureTransaction != null && parent.getEditMode() == EditMode.DRAG_MODE
&& event.getNativeButton() != Event.BUTTON_RIGHT) {
String targetId = getTargetId(event);
if (TransactionGeomIndexUtil.isVertex(targetId)) {
dragTargetId = targetId;
if (dragTransaction == null) {
dragTransaction = (FeatureTransaction) featureTransaction.clone();
}
mapWidget.render(featureTransaction, RenderGroup.VECTOR, RenderStatus.DELETE);
mapWidget.render(dragTransaction, RenderGroup.VECTOR, RenderStatus.ALL);
createTempLines(featureTransaction, event);
}
}
}
public void onMouseMove(MouseMoveEvent event) {
FeatureTransaction featureTransaction = getFeatureTransaction();
if (featureTransaction != null && parent.getEditMode() == EditMode.DRAG_MODE && dragTargetId != null) {
TransactionGeomIndex index = TransactionGeomIndexUtil.getIndex(dragTargetId);
Feature feature = dragTransaction.getNewFeatures()[index.getFeatureIndex()];
FeatureOperation op = new SetCoordinateOp(index, getWorldPosition(event));
op.execute(feature);
mapWidget.render(dragTransaction, RenderGroup.VECTOR, RenderStatus.DELETE);
mapWidget.render(dragTransaction, RenderGroup.VECTOR, RenderStatus.ALL);
} else if (featureTransaction != null && parent.getEditMode() == EditMode.INSERT_MODE) {
updateTempLines(featureTransaction, event);
}
}
public void onMouseUp(MouseUpEvent event) {
if (event.getNativeButton() != Event.BUTTON_RIGHT) {
FeatureTransaction featureTransaction = getFeatureTransaction();
if (featureTransaction != null && parent.getEditMode() == EditMode.INSERT_MODE) {
// The creation of a new point:
FeatureOperation op = new AddCoordinateOp(getGeometryIndex(), getWorldPosition(event));
featureTransaction.execute(op);
mapWidget.render(featureTransaction, RenderGroup.VECTOR, RenderStatus.DELETE);
mapWidget.render(featureTransaction, RenderGroup.VECTOR, RenderStatus.ALL);
updateGeometricInfo();
} else if (featureTransaction != null && parent.getEditMode() == EditMode.DRAG_MODE
&& dragTargetId != null) {
// Done dragging a point:
TransactionGeomIndex index = TransactionGeomIndexUtil.getIndex(dragTargetId);
// TODO: check validity
FeatureOperation op = new SetCoordinateOp(index, getWorldPosition(event));
featureTransaction.execute(op);
if (dragTransaction != null) {
mapWidget.render(dragTransaction, RenderGroup.VECTOR, RenderStatus.DELETE);
dragTransaction = null;
}
mapWidget.render(featureTransaction, RenderGroup.VECTOR, RenderStatus.ALL);
dragTargetId = null;
removeTempLines();
updateGeometricInfo();
}
}
}
// Getters and setters:
public void setEditMode(EditMode editMode) {
super.setEditMode(editMode);
if (editMode == EditMode.DRAG_MODE) {
removeTempLines();
}
}
// Private methods:
protected void createTempLines(FeatureTransaction featureTransaction, MouseEvent<?> event) {
if (featureTransaction.getNewFeatures() != null && featureTransaction.getNewFeatures().length > 0
&& tempLine1 == null) {
Coordinate position = getPanPosition(event);
Geometry geom = getGeometryIndex().getGeometry(featureTransaction);
LineString lineString = geom.getGeometryFactory().createLineString(new Coordinate[] { position, position });
tempLine1 = new GfxGeometry("LineStringEditController.updateLine1");
tempLine1.setGeometry(lineString);
tempLine1.setStyle(new ShapeStyle("#FFFFFF", 0, "#FF3322", 1, 1));
mapWidget.render(tempLine1, RenderGroup.VECTOR, RenderStatus.ALL);
tempLine2 = new GfxGeometry("LineStringEditController.updateLine2");
tempLine2.setGeometry(lineString);
tempLine2.setStyle(new ShapeStyle("#FFFFFF", 0, "#FF3322", 1, 1));
mapWidget.render(tempLine2, RenderGroup.VECTOR, RenderStatus.ALL);
}
}
protected void updateTempLines(FeatureTransaction featureTransaction, MouseEvent<?> event) {
if (featureTransaction.getNewFeatures() != null && featureTransaction.getNewFeatures().length > 0) {
if (tempLine1 == null) {
createTempLines(featureTransaction, event);
}
Polygon polygon = (Polygon) getGeometryIndex().getGeometry(featureTransaction);
LinearRing ring = getGeometryIndex().getLinearRing(polygon);
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);
}
}
}
}
protected void removeTempLines() {
if (tempLine1 != null) {
mapWidget.render(tempLine1, RenderGroup.VECTOR, RenderStatus.DELETE);
tempLine1 = null;
}
if (tempLine2 != null) {
mapWidget.render(tempLine2, RenderGroup.VECTOR, RenderStatus.DELETE);
tempLine2 = null;
}
}
}