package org.eclipse.gmf.examples.mindmap.rcp.diagram.edit.policies;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CompoundCommand;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gef.requests.ReconnectRequest;
import org.eclipse.gmf.examples.mindmap.MindmapPackage;
import org.eclipse.gmf.examples.mindmap.Topic;
import org.eclipse.gmf.examples.mindmap.rcp.diagram.edit.helpers.MindmapBaseEditHelper;
import org.eclipse.gmf.examples.mindmap.rcp.diagram.expressions.MindmapAbstractExpression;
import org.eclipse.gmf.examples.mindmap.rcp.diagram.expressions.MindmapOCLFactory;
import org.eclipse.gmf.examples.mindmap.rcp.diagram.part.MindmapDiagramEditorPlugin;
import org.eclipse.gmf.examples.mindmap.rcp.diagram.part.MindmapVisualIDRegistry;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;
import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.SemanticEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.requests.EditCommandRequestWrapper;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry;
import org.eclipse.gmf.runtime.emf.type.core.IEditHelperContext;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyReferenceRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DuplicateElementsRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.GetEditContextRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.MoveRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.gmf.runtime.notation.Edge;
import org.eclipse.gmf.runtime.notation.View;
/**
* @generated
*/
public class MindmapBaseItemSemanticEditPolicy extends SemanticEditPolicy {
/**
* Extended request data key to hold editpart visual id.
*
* @generated
*/
public static final String VISUAL_ID_KEY = "visual_id"; //$NON-NLS-1$
/**
* Extended request data key to hold editpart visual id.
* Add visual id of edited editpart to extended data of the request
* so command switch can decide what kind of diagram element is being edited.
* It is done in those cases when it's not possible to deduce diagram
* element kind from domain element.
*
* @generated
*/
public Command getCommand(Request request) {
if (request instanceof ReconnectRequest) {
Object view = ((ReconnectRequest) request).getConnectionEditPart()
.getModel();
if (view instanceof View) {
Integer id = new Integer(MindmapVisualIDRegistry
.getVisualID((View) view));
request.getExtendedData().put(VISUAL_ID_KEY, id);
}
}
return super.getCommand(request);
}
/**
* Returns visual id from request parameters.
*
* @generated
*/
protected int getVisualID(IEditCommandRequest request) {
Object id = request.getParameter(VISUAL_ID_KEY);
return id instanceof Integer ? ((Integer) id).intValue() : -1;
}
/**
* @generated
*/
protected Command getSemanticCommand(IEditCommandRequest request) {
IEditCommandRequest completedRequest = completeRequest(request);
Object editHelperContext = completedRequest.getEditHelperContext();
if (editHelperContext instanceof View
|| (editHelperContext instanceof IEditHelperContext && ((IEditHelperContext) editHelperContext)
.getEObject() instanceof View)) {
// no semantic commands are provided for pure design elements
return null;
}
if (editHelperContext == null) {
editHelperContext = ViewUtil
.resolveSemanticElement((View) getHost().getModel());
}
IElementType elementType = ElementTypeRegistry.getInstance()
.getElementType(editHelperContext);
if (elementType == ElementTypeRegistry.getInstance().getType(
"org.eclipse.gmf.runtime.emf.type.core.default")) { //$NON-NLS-1$
elementType = null;
}
Command semanticCommand = getSemanticCommandSwitch(completedRequest);
if (semanticCommand != null) {
ICommand command = semanticCommand instanceof ICommandProxy ? ((ICommandProxy) semanticCommand)
.getICommand()
: new CommandProxy(semanticCommand);
completedRequest.setParameter(
MindmapBaseEditHelper.EDIT_POLICY_COMMAND, command);
}
if (elementType != null) {
ICommand command = elementType.getEditCommand(completedRequest);
if (command != null) {
if (!(command instanceof CompositeTransactionalCommand)) {
TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost())
.getEditingDomain();
command = new CompositeTransactionalCommand(editingDomain,
null).compose(command);
}
semanticCommand = new ICommandProxy(command);
}
}
boolean shouldProceed = true;
if (completedRequest instanceof DestroyRequest) {
shouldProceed = shouldProceed((DestroyRequest) completedRequest);
}
if (shouldProceed) {
if (completedRequest instanceof DestroyRequest) {
TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost())
.getEditingDomain();
Command deleteViewCommand = new ICommandProxy(
new DeleteCommand(editingDomain, (View) getHost()
.getModel()));
semanticCommand = semanticCommand == null ? deleteViewCommand
: semanticCommand.chain(deleteViewCommand);
}
return semanticCommand;
}
return null;
}
/**
* @generated
*/
protected Command getSemanticCommandSwitch(IEditCommandRequest req) {
if (req instanceof CreateRelationshipRequest) {
return getCreateRelationshipCommand((CreateRelationshipRequest) req);
} else if (req instanceof CreateElementRequest) {
return getCreateCommand((CreateElementRequest) req);
} else if (req instanceof ConfigureRequest) {
return getConfigureCommand((ConfigureRequest) req);
} else if (req instanceof DestroyElementRequest) {
return getDestroyElementCommand((DestroyElementRequest) req);
} else if (req instanceof DestroyReferenceRequest) {
return getDestroyReferenceCommand((DestroyReferenceRequest) req);
} else if (req instanceof DuplicateElementsRequest) {
return getDuplicateCommand((DuplicateElementsRequest) req);
} else if (req instanceof GetEditContextRequest) {
return getEditContextCommand((GetEditContextRequest) req);
} else if (req instanceof MoveRequest) {
return getMoveCommand((MoveRequest) req);
} else if (req instanceof ReorientReferenceRelationshipRequest) {
return getReorientReferenceRelationshipCommand((ReorientReferenceRelationshipRequest) req);
} else if (req instanceof ReorientRelationshipRequest) {
return getReorientRelationshipCommand((ReorientRelationshipRequest) req);
} else if (req instanceof SetRequest) {
return getSetCommand((SetRequest) req);
}
return null;
}
/**
* @generated
*/
protected Command getConfigureCommand(ConfigureRequest req) {
return null;
}
/**
* @generated
*/
protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
return null;
}
/**
* @generated
*/
protected Command getCreateCommand(CreateElementRequest req) {
return null;
}
/**
* @generated
*/
protected Command getSetCommand(SetRequest req) {
return null;
}
/**
* @generated
*/
protected Command getEditContextCommand(GetEditContextRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDestroyElementCommand(DestroyElementRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDuplicateCommand(DuplicateElementsRequest req) {
return null;
}
/**
* @generated
*/
protected Command getMoveCommand(MoveRequest req) {
return null;
}
/**
* @generated
*/
protected Command getReorientReferenceRelationshipCommand(
ReorientReferenceRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* @generated
*/
protected Command getReorientRelationshipCommand(
ReorientRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* @generated
*/
protected final Command getGEFWrapper(ICommand cmd) {
return new ICommandProxy(cmd);
}
/**
* @deprecated use getGEFWrapper() instead
* @generated
*/
protected final Command getMSLWrapper(ICommand cmd) {
// XXX deprecated: use getGEFWrapper() instead
return getGEFWrapper(cmd);
}
/**
* @generated
*/
protected EObject getSemanticElement() {
return ViewUtil.resolveSemanticElement((View) getHost().getModel());
}
/**
* Returns editing domain from the host edit part.
*
* @generated
*/
protected TransactionalEditingDomain getEditingDomain() {
return ((IGraphicalEditPart) getHost()).getEditingDomain();
}
/**
* Creates command to destroy the link.
*
* @generated
*/
protected Command getDestroyElementCommand(View view) {
EditPart editPart = (EditPart) getHost().getViewer()
.getEditPartRegistry().get(view);
DestroyElementRequest request = new DestroyElementRequest(
getEditingDomain(), false);
return editPart.getCommand(new EditCommandRequestWrapper(request,
Collections.EMPTY_MAP));
}
/**
* Creates commands to destroy all host incoming and outgoing links.
*
* @generated
*/
protected CompoundCommand getDestroyEdgesCommand() {
CompoundCommand cmd = new CompoundCommand();
View view = (View) getHost().getModel();
for (Iterator it = view.getSourceEdges().iterator(); it.hasNext();) {
cmd.add(getDestroyElementCommand((Edge) it.next()));
}
for (Iterator it = view.getTargetEdges().iterator(); it.hasNext();) {
cmd.add(getDestroyElementCommand((Edge) it.next()));
}
return cmd;
}
/**
* @generated
*/
protected void addDestroyShortcutsCommand(CompoundCommand command) {
View view = (View) getHost().getModel();
if (view.getEAnnotation("Shortcut") != null) { //$NON-NLS-1$
return;
}
for (Iterator it = view.getDiagram().getChildren().iterator(); it
.hasNext();) {
View nextView = (View) it.next();
if (nextView.getEAnnotation("Shortcut") == null || !nextView.isSetElement() || nextView.getElement() != view.getElement()) { //$NON-NLS-1$
continue;
}
command.add(getDestroyElementCommand(nextView));
}
}
/**
* @generated
*/
public static class LinkConstraints {
/**
* @generated
*/
private static final String OPPOSITE_END_VAR = "oppositeEnd"; //$NON-NLS-1$
/**
* @generated
*/
private static final MindmapAbstractExpression TopicSubtopics_4001_SourceExpression;
/**
* @generated
*/
static {
Map env = new HashMap(3);
env.put(OPPOSITE_END_VAR, MindmapPackage.eINSTANCE.getTopic());
TopicSubtopics_4001_SourceExpression = MindmapOCLFactory
.getExpression(
"self <> oppositeEnd", MindmapPackage.eINSTANCE.getTopic(), env); //$NON-NLS-1$
}
/**
* @generated
*/
public static boolean canCreateTopicSubtopics_4001(Topic source,
Topic target) {
if (source != null) {
if (source.getSubtopics().contains(target)) {
return false;
}
}
return canExistTopicSubtopics_4001(source, target);
}
/**
* @generated
*/
public static boolean canCreateRelationship_4002(
org.eclipse.gmf.examples.mindmap.Map container, Topic source,
Topic target) {
return canExistRelationship_4002(container, source, target);
}
/**
* @generated
*/
public static boolean canCreateRelationship_4003(
org.eclipse.gmf.examples.mindmap.Map container, Topic source,
Topic target) {
return canExistRelationship_4003(container, source, target);
}
/**
* @generated
*/
public static boolean canCreateRelationship_4004(
org.eclipse.gmf.examples.mindmap.Map container, Topic source,
Topic target) {
return canExistRelationship_4004(container, source, target);
}
/**
* @generated
*/
public static boolean canExistTopicSubtopics_4001(Topic source,
Topic target) {
if (!evaluate(TopicSubtopics_4001_SourceExpression, source, target,
false)) {
return false;
}
return true;
}
/**
* @generated
*/
public static boolean canExistRelationship_4002(
org.eclipse.gmf.examples.mindmap.Map container, Topic source,
Topic target) {
return true;
}
/**
* @generated
*/
public static boolean canExistRelationship_4003(
org.eclipse.gmf.examples.mindmap.Map container, Topic source,
Topic target) {
return true;
}
/**
* @generated
*/
public static boolean canExistRelationship_4004(
org.eclipse.gmf.examples.mindmap.Map container, Topic source,
Topic target) {
return true;
}
/**
* @generated
*/
private static boolean evaluate(MindmapAbstractExpression constraint,
Object sourceEnd, Object oppositeEnd, boolean clearEnv) {
if (sourceEnd == null) {
return true;
}
Map evalEnv = Collections.singletonMap(OPPOSITE_END_VAR,
oppositeEnd);
try {
Object val = constraint.evaluate(sourceEnd, evalEnv);
return (val instanceof Boolean) ? ((Boolean) val)
.booleanValue() : false;
} catch (Exception e) {
MindmapDiagramEditorPlugin.getInstance().logError(
"Link constraint evaluation error", e); //$NON-NLS-1$
return false;
}
}
}
}
