| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2006 IBM Corporation and others. |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // which accompanies this distribution, and is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // Contributors: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.authoring.gef.edit; |
| |
| import org.eclipse.draw2d.ColorConstants; |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.draw2d.PolygonDecoration; |
| import org.eclipse.draw2d.PolylineConnection; |
| import org.eclipse.emf.common.notify.Adapter; |
| import org.eclipse.emf.common.notify.Notification; |
| import org.eclipse.emf.common.notify.impl.AdapterImpl; |
| import org.eclipse.epf.authoring.gef.commands.DeleteCommand; |
| import org.eclipse.epf.authoring.gef.commands.DeleteLinkCommand; |
| import org.eclipse.epf.authoring.gef.edit.policies.LinkBendpointEditPolicy; |
| import org.eclipse.epf.authoring.gef.edit.policies.LinkEndpointEditPolicy; |
| import org.eclipse.epf.authoring.gef.figures.Colors; |
| import org.eclipse.epf.authoring.gef.util.Validation; |
| import org.eclipse.epf.diagram.model.Link; |
| import org.eclipse.epf.diagram.model.ModelPackage; |
| import org.eclipse.gef.EditPolicy; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.editparts.AbstractConnectionEditPart; |
| import org.eclipse.gef.editpolicies.ConnectionEditPolicy; |
| import org.eclipse.gef.requests.GroupRequest; |
| |
| /** |
| * Provides support to update the appearance, and installs the editpolicies |
| * specific the {@link Link} and listens to changes in the diagram model. |
| * @author Phong Nguyen Le |
| * @since 1.0 |
| */ |
| public class LinkEditPart extends AbstractConnectionEditPart { |
| |
| protected Adapter modelListener = new AdapterImpl() { |
| public void notifyChanged(Notification msg) { |
| handlePropertyChanged(msg); |
| } |
| }; |
| |
| public LinkEditPart(Link conn) { |
| super(); |
| setModel(conn); |
| } |
| |
| public void activate() { |
| super.activate(); |
| getLink().eAdapters().add(modelListener); |
| } |
| |
| protected void createEditPolicies() { |
| installEditPolicy(EditPolicy.CONNECTION_ENDPOINTS_ROLE, |
| new LinkEndpointEditPolicy()); |
| installEditPolicy(EditPolicy.CONNECTION_ROLE, |
| new ConnectionEditPolicy() { |
| protected Command getDeleteCommand(GroupRequest request) { |
| Boolean bool = (Boolean) request.getExtendedData().get( |
| DeleteCommand.KEY_PERM_DELETE); |
| boolean permDelete = bool == null ? false : bool |
| .booleanValue(); |
| return new DeleteLinkCommand((Link) getHost() |
| .getModel(), permDelete); |
| } |
| }); |
| installEditPolicy(EditPolicy.CONNECTION_BENDPOINTS_ROLE, |
| new LinkBendpointEditPolicy()); |
| } |
| |
| protected IFigure createFigure() { |
| PolylineConnection conn = new PolylineConnection(); |
| conn.setTargetDecoration(new PolygonDecoration()); |
| updateAppearance(); |
| return conn; |
| } |
| |
| private void updateAppearance() { |
| if (figure == null) |
| return; |
| Link link = (Link) getModel(); |
| if (Validation.isReadOnly(link)) { |
| figure.setForegroundColor(Colors.INHERITED_ELEMENT_LABEL); |
| } else { |
| figure.setForegroundColor(ColorConstants.black); |
| } |
| } |
| |
| public void deactivate() { |
| getLink().eAdapters().remove(modelListener); |
| super.deactivate(); |
| } |
| |
| protected Link getLink() { |
| return (Link) getModel(); |
| } |
| |
| protected void handlePropertyChanged(Notification msg) { |
| switch (msg.getFeatureID(Link.class)) { |
| case ModelPackage.LINK__BENDPOINTS: |
| refreshVisuals(); |
| break; |
| case ModelPackage.LINK__TARGET_END_POINT: |
| refreshTargetAnchor(); |
| break; |
| case ModelPackage.LINK__SOURCE_END_POINT: |
| refreshSourceAnchor(); |
| break; |
| } |
| } |
| |
| protected void refreshVisuals() { |
| updateAppearance(); |
| getConnectionFigure().setRoutingConstraint(getLink().getBendpoints()); |
| } |
| |
| } |