package org.eclipse.uml2.diagram.clazz.edit.commands;
import java.util.Iterator;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.RequestConstants;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CompoundCommand;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gef.requests.CreateConnectionRequest;
import org.eclipse.gef.requests.GroupRequest;
import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
import org.eclipse.gmf.runtime.diagram.core.edithelpers.CreateElementRequestAdapter;
import org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart;
import org.eclipse.gmf.runtime.diagram.ui.internal.commands.SetConnectionBendpointsCommand;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewAndElementRequest;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewAndElementRequest.ConnectionViewAndElementDescriptor;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest.ConnectionViewDescriptor;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.uml2.diagram.clazz.edit.helpers.DependencyEditHelper;
import org.eclipse.uml2.diagram.clazz.edit.parts.Dependency2EditPart;
import org.eclipse.uml2.diagram.clazz.part.CustomMessages;
import org.eclipse.uml2.diagram.clazz.providers.UMLElementTypes;
import org.eclipse.uml2.uml.Dependency;
public class ChangeDependencyTypeCommand extends CompoundCommand {
private EClass dependencyType;
private ConnectionEditPart editPart;
private CreateConnectionViewAndElementRequest createViewRequest;
public ChangeDependencyTypeCommand(ConnectionEditPart editPart, EClass dependencyType) {
this(editPart, dependencyType, PreferencesHint.USE_DEFAULTS);
}
public ChangeDependencyTypeCommand(ConnectionEditPart editPart, EClass dependencyType, PreferencesHint preferencesHint) {
super(CustomMessages.ChangeDependencyTypeCommand_command_label);
this.dependencyType = dependencyType;
this.editPart = editPart;
add(getDeleteViewCommand());
createViewRequest = getCreateViewRequest(preferencesHint);
add(getCreateViewCommand());
}
public ConnectionViewDescriptor getElementDescriptor() {
final Object newObject = createViewRequest.getNewObject();
if (false == newObject instanceof ConnectionViewAndElementDescriptor) {
return null;
}
return (ConnectionViewAndElementDescriptor) newObject;
}
private Command getDeleteViewCommand() {
Request deleteViewRequest = new GroupRequest(RequestConstants.REQ_DELETE);
Command command = editPart.getCommand(deleteViewRequest);
return (command != null) ? command : UnexecutableCommand.INSTANCE;
}
private Command getCreateViewCommand() {
if (createViewRequest == null) {
return UnexecutableCommand.INSTANCE;
}
EditPart sourceEditPart = editPart.getSource();
createViewRequest.setType(RequestConstants.REQ_CONNECTION_START);
createViewRequest.setLocation(getSourceLocation(editPart));
sourceEditPart.getCommand(createViewRequest);
EditPart targetEditPart = editPart.getTarget();
createViewRequest.setType(RequestConstants.REQ_CONNECTION_END);
createViewRequest.setLocation(getTargetLocation(editPart));
Command createViewCommand = targetEditPart.getCommand(createViewRequest);
if (createViewCommand == null) {
return UnexecutableCommand.INSTANCE;
}
processSetBendPointsCommand(createViewRequest);
return createViewCommand;
}
private CreateConnectionViewAndElementRequest getCreateViewRequest(PreferencesHint preferencesHint) {
View view = (View) editPart.getModel();
if (view == null) {
return null;
}
ConnectionViewAndElementDescriptor viewDescriptor = getConnectionViewDescriptor(preferencesHint);
CreateConnectionViewAndElementRequest createViewRequest = new CreateConnectionViewAndElementRequest(viewDescriptor);
createViewRequest.setSourceEditPart(editPart.getSource());
createViewRequest.setTargetEditPart(editPart.getTarget());
return createViewRequest;
}
private ConnectionViewAndElementDescriptor getConnectionViewDescriptor(PreferencesHint preferencesHint) {
String semanticHint = String.valueOf(Dependency2EditPart.VISUAL_ID);
CreateRelationshipRequest createElementRequest = new CreateRelationshipRequest(UMLElementTypes.Dependency_4002);
createElementRequest.setSource(((View) editPart.getSource().getModel()).getElement());
createElementRequest.setTarget(((View) editPart.getTarget().getModel()).getElement());
createElementRequest.setParameter(DependencyEditHelper.PARAMETER_DEPENDENCY_TYPE, dependencyType);
String name = ((Dependency) ((View) editPart.getModel()).getElement()).getName();
createElementRequest.setParameter(DependencyEditHelper.PARAMETER_DEPENDENCY_NAME, name);
ConnectionViewAndElementDescriptor viewDescriptor = new ConnectionViewAndElementDescriptor(new CreateElementRequestAdapter(createElementRequest), semanticHint, preferencesHint);
return viewDescriptor;
}
private Point getSourceLocation(ConnectionEditPart editPart) {
return editPart.getConnectionFigure().getSourceAnchor().getReferencePoint();
}
private Point getTargetLocation(ConnectionEditPart editPart) {
return editPart.getConnectionFigure().getTargetAnchor().getReferencePoint();
}
private void processSetBendPointsCommand(CreateConnectionRequest createConnectionRequest) {
Point sourceRefPoint;
Point targetRefPoint;
ConnectionAnchor sourceAnchor = editPart.getConnectionFigure().getSourceAnchor();
ConnectionAnchor targetAnchor = editPart.getConnectionFigure().getTargetAnchor();
if (sourceAnchor == null) {
return;
}
sourceRefPoint = sourceAnchor.getReferencePoint().getCopy();
sourceAnchor.getOwner().translateToRelative(sourceRefPoint);
if (targetAnchor == null) {
return;
}
targetRefPoint = targetAnchor.getReferencePoint().getCopy();
targetAnchor.getOwner().translateToRelative(targetRefPoint);
PointList newPointList = editPart.getConnectionFigure().getPoints().getCopy();
SetConnectionBendpointsCommand setConnectionBendpointsCommand = getSetConnectionBendpointsCommand(createConnectionRequest);
if (setConnectionBendpointsCommand != null) {
setConnectionBendpointsCommand.setNewPointList(newPointList, sourceRefPoint, targetRefPoint);
}
}
private SetConnectionBendpointsCommand getSetConnectionBendpointsCommand(CreateConnectionRequest createConnectionRequest) {
ICommandProxy proxy = (ICommandProxy) createConnectionRequest.getStartCommand();
CompositeCommand cc = (CompositeCommand) proxy.getICommand();
Iterator iterator = cc.iterator();
while (iterator.hasNext()) {
Object next = iterator.next();
if (next instanceof SetConnectionBendpointsCommand) {
return (SetConnectionBendpointsCommand) next;
}
}
return null;
}
}