| package org.eclipse.gmf.example.lesscode.diagram.edit.commands; |
| |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.gmf.example.lesscode.ElementBasedLink; |
| import org.eclipse.gmf.example.lesscode.RootContainer; |
| import org.eclipse.gmf.example.lesscode.Subject; |
| import org.eclipse.gmf.example.lesscode.diagram.edit.policies.LesscodeBaseItemSemanticEditPolicy; |
| import org.eclipse.gmf.runtime.common.core.command.CommandResult; |
| import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest; |
| |
| /** |
| * @generated |
| */ |
| public class ElementBasedLinkReorientCommand extends EditElementCommand { |
| |
| /** |
| * @generated |
| */ |
| private final int reorientDirection; |
| |
| /** |
| * @generated |
| */ |
| private final EObject oldEnd; |
| |
| /** |
| * @generated |
| */ |
| private final EObject newEnd; |
| |
| /** |
| * @generated |
| */ |
| public ElementBasedLinkReorientCommand(ReorientRelationshipRequest request) { |
| super(request.getLabel(), request.getRelationship(), request); |
| reorientDirection = request.getDirection(); |
| oldEnd = request.getOldRelationshipEnd(); |
| newEnd = request.getNewRelationshipEnd(); |
| } |
| |
| /** |
| * @generated |
| */ |
| public boolean canExecute() { |
| if (false == getElementToEdit() instanceof ElementBasedLink) { |
| return false; |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) { |
| return canReorientSource(); |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) { |
| return canReorientTarget(); |
| } |
| return false; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected boolean canReorientSource() { |
| if (!(oldEnd instanceof Subject && newEnd instanceof Subject)) { |
| return false; |
| } |
| Subject target = getLink().getLinkTarget(); |
| if (!(getLink().eContainer() instanceof RootContainer)) { |
| return false; |
| } |
| RootContainer container = (RootContainer) getLink().eContainer(); |
| return LesscodeBaseItemSemanticEditPolicy.getLinkConstraints().canExistElementBasedLink_4001(container, getLink(), getNewSource(), target); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected boolean canReorientTarget() { |
| if (!(oldEnd instanceof Subject && newEnd instanceof Subject)) { |
| return false; |
| } |
| Subject source = getLink().getLinkSource(); |
| if (!(getLink().eContainer() instanceof RootContainer)) { |
| return false; |
| } |
| RootContainer container = (RootContainer) getLink().eContainer(); |
| return LesscodeBaseItemSemanticEditPolicy.getLinkConstraints().canExistElementBasedLink_4001(container, getLink(), source, getNewTarget()); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException { |
| if (!canExecute()) { |
| throw new ExecutionException("Invalid arguments in reorient link command"); //$NON-NLS-1$ |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) { |
| return reorientSource(); |
| } |
| if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) { |
| return reorientTarget(); |
| } |
| throw new IllegalStateException(); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected CommandResult reorientSource() throws ExecutionException { |
| getLink().setLinkSource(getNewSource()); |
| return CommandResult.newOKCommandResult(getLink()); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected CommandResult reorientTarget() throws ExecutionException { |
| getLink().setLinkTarget(getNewTarget()); |
| return CommandResult.newOKCommandResult(getLink()); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected ElementBasedLink getLink() { |
| return (ElementBasedLink) getElementToEdit(); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Subject getOldSource() { |
| return (Subject) oldEnd; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Subject getNewSource() { |
| return (Subject) newEnd; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Subject getOldTarget() { |
| return (Subject) oldEnd; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Subject getNewTarget() { |
| return (Subject) newEnd; |
| } |
| } |