package org.eclipse.gmf.tooling.examples.shortcut.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.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;
import org.eclipse.gmf.tooling.examples.shortcut.Diagram;
import org.eclipse.gmf.tooling.examples.shortcut.DiagramLink;
import org.eclipse.gmf.tooling.examples.shortcut.DiagramNode;
import org.eclipse.gmf.tooling.examples.shortcut.diagram.edit.policies.ShortcutBaseItemSemanticEditPolicy;
/**
* @generated
*/
public class DiagramLinkReorientCommand extends EditElementCommand {
/**
* @generated
*/
private final int reorientDirection;
/**
* @generated
*/
private final EObject oldEnd;
/**
* @generated
*/
private final EObject newEnd;
/**
* @generated
*/
public DiagramLinkReorientCommand(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 DiagramLink) {
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 DiagramNode && newEnd instanceof DiagramNode)) {
return false;
}
DiagramNode target = getLink().getTargetNode();
if (!(getLink().eContainer() instanceof Diagram)) {
return false;
}
Diagram container = (Diagram) getLink().eContainer();
return ShortcutBaseItemSemanticEditPolicy.getLinkConstraints().canExistDiagramLink_4001(container, getLink(), getNewSource(), target);
}
/**
* @generated
*/
protected boolean canReorientTarget() {
if (!(oldEnd instanceof DiagramNode && newEnd instanceof DiagramNode)) {
return false;
}
DiagramNode source = getLink().getSourceNode();
if (!(getLink().eContainer() instanceof Diagram)) {
return false;
}
Diagram container = (Diagram) getLink().eContainer();
return ShortcutBaseItemSemanticEditPolicy.getLinkConstraints().canExistDiagramLink_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().setSourceNode(getNewSource());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected CommandResult reorientTarget() throws ExecutionException {
getLink().setTargetNode(getNewTarget());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected DiagramLink getLink() {
return (DiagramLink) getElementToEdit();
}
/**
* @generated
*/
protected DiagramNode getOldSource() {
return (DiagramNode) oldEnd;
}
/**
* @generated
*/
protected DiagramNode getNewSource() {
return (DiagramNode) newEnd;
}
/**
* @generated
*/
protected DiagramNode getOldTarget() {
return (DiagramNode) oldEnd;
}
/**
* @generated
*/
protected DiagramNode getNewTarget() {
return (DiagramNode) newEnd;
}
}