package org.eclipse.gmf.example.lesscode.diagram.edit.policies;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.example.lesscode.LesscodePackage;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.ElementBasedLinkEditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.MultiContainmentGroupEditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.OneContainmentGroupEditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.RootContainerEditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.Subject2EditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.Subject3EditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.Subject4EditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.Subject5EditPart;
import org.eclipse.gmf.example.lesscode.diagram.edit.parts.SubjectEditPart;
import org.eclipse.gmf.example.lesscode.diagram.part.LesscodeDiagramUpdater;
import org.eclipse.gmf.example.lesscode.diagram.part.LesscodeLinkDescriptor;
import org.eclipse.gmf.example.lesscode.diagram.part.LesscodeNodeDescriptor;
import org.eclipse.gmf.example.lesscode.diagram.part.LesscodeVisualIDRegistry;
import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
import org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.SetViewMutabilityCommand;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.CanonicalEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.diagram.ui.requests.RequestConstants;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.Edge;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.gmf.tooling.runtime.update.UpdaterLinkDescriptor;
/**
* @generated
*/
public class RootContainerCanonicalEditPolicy extends CanonicalEditPolicy {
/**
* @generated
*/
private Set<EStructuralFeature> myFeaturesToSynchronize;
/**
* @generated
*/
protected void refreshOnActivate() {
// Need to activate editpart children before invoking the canonical refresh for EditParts to add event listeners
List<?> c = getHost().getChildren();
for (int i = 0; i < c.size(); i++) {
((EditPart) c.get(i)).activate();
}
super.refreshOnActivate();
}
/**
* @generated
*/
protected Set getFeaturesToSynchronize() {
if (myFeaturesToSynchronize == null) {
myFeaturesToSynchronize = new HashSet<EStructuralFeature>();
myFeaturesToSynchronize.add(LesscodePackage.eINSTANCE.getRootContainer_RootSubjects());
myFeaturesToSynchronize.add(LesscodePackage.eINSTANCE.getRootContainer_OneContainmentGroups());
myFeaturesToSynchronize.add(LesscodePackage.eINSTANCE.getRootContainer_MultiContainmentGroups());
}
return myFeaturesToSynchronize;
}
/**
* @generated
*/
@SuppressWarnings("rawtypes")
protected List getSemanticChildrenList() {
View viewObject = (View) getHost().getModel();
LinkedList<EObject> result = new LinkedList<EObject>();
List<LesscodeNodeDescriptor> childDescriptors = LesscodeDiagramUpdater.getRootContainer_1000SemanticChildren(viewObject);
for (LesscodeNodeDescriptor d : childDescriptors) {
result.add(d.getModelElement());
}
return result;
}
/**
* @generated
*/
protected boolean isOrphaned(Collection<EObject> semanticChildren, final View view) {
return isMyDiagramElement(view) && !semanticChildren.contains(view.getElement());
}
/**
* @generated
*/
private boolean isMyDiagramElement(View view) {
int visualID = LesscodeVisualIDRegistry.getVisualID(view);
return visualID == SubjectEditPart.VISUAL_ID || visualID == OneContainmentGroupEditPart.VISUAL_ID || visualID == MultiContainmentGroupEditPart.VISUAL_ID;
}
/**
* @generated
*/
protected void refreshSemantic() {
if (resolveSemanticElement() == null) {
return;
}
LinkedList<IAdaptable> createdViews = new LinkedList<IAdaptable>();
List<LesscodeNodeDescriptor> childDescriptors = LesscodeDiagramUpdater.getRootContainer_1000SemanticChildren((View) getHost().getModel());
LinkedList<View> orphaned = new LinkedList<View>();
// we care to check only views we recognize as ours
LinkedList<View> knownViewChildren = new LinkedList<View>();
for (View v : getViewChildren()) {
if (isMyDiagramElement(v)) {
knownViewChildren.add(v);
}
}
// alternative to #cleanCanonicalSemanticChildren(getViewChildren(), semanticChildren)
//
// iteration happens over list of desired semantic elements, trying to find best matching View, while original CEP
// iterates views, potentially losing view (size/bounds) information - i.e. if there are few views to reference same EObject, only last one
// to answer isOrphaned == true will be used for the domain element representation, see #cleanCanonicalSemanticChildren()
for (Iterator<LesscodeNodeDescriptor> descriptorsIterator = childDescriptors.iterator(); descriptorsIterator.hasNext();) {
LesscodeNodeDescriptor next = descriptorsIterator.next();
String hint = LesscodeVisualIDRegistry.getType(next.getVisualID());
LinkedList<View> perfectMatch = new LinkedList<View>(); // both semanticElement and hint match that of NodeDescriptor
for (View childView : getViewChildren()) {
EObject semanticElement = childView.getElement();
if (next.getModelElement().equals(semanticElement)) {
if (hint.equals(childView.getType())) {
perfectMatch.add(childView);
// actually, can stop iteration over view children here, but
// may want to use not the first view but last one as a 'real' match (the way original CEP does
// with its trick with viewToSemanticMap inside #cleanCanonicalSemanticChildren
}
}
}
if (perfectMatch.size() > 0) {
descriptorsIterator.remove(); // precise match found no need to create anything for the NodeDescriptor
// use only one view (first or last?), keep rest as orphaned for further consideration
knownViewChildren.remove(perfectMatch.getFirst());
}
}
// those left in knownViewChildren are subject to removal - they are our diagram elements we didn't find match to,
// or those we have potential matches to, and thus need to be recreated, preserving size/location information.
orphaned.addAll(knownViewChildren);
//
ArrayList<CreateViewRequest.ViewDescriptor> viewDescriptors = new ArrayList<CreateViewRequest.ViewDescriptor>(childDescriptors.size());
for (LesscodeNodeDescriptor next : childDescriptors) {
String hint = LesscodeVisualIDRegistry.getType(next.getVisualID());
IAdaptable elementAdapter = new CanonicalElementAdapter(next.getModelElement(), hint);
CreateViewRequest.ViewDescriptor descriptor = new CreateViewRequest.ViewDescriptor(elementAdapter, Node.class, hint, ViewUtil.APPEND, false, host().getDiagramPreferencesHint());
viewDescriptors.add(descriptor);
}
boolean changed = deleteViews(orphaned.iterator());
//
CreateViewRequest request = getCreateViewRequest(viewDescriptors);
Command cmd = getCreateViewCommand(request);
if (cmd != null && cmd.canExecute()) {
SetViewMutabilityCommand.makeMutable(new EObjectAdapter(host().getNotationView())).execute();
executeCommand(cmd);
@SuppressWarnings("unchecked")
List<IAdaptable> nl = (List<IAdaptable>) request.getNewObject();
createdViews.addAll(nl);
}
if (changed || createdViews.size() > 0) {
postProcessRefreshSemantic(createdViews);
}
Collection<IAdaptable> createdConnectionViews = refreshConnections();
if (createdViews.size() > 1) {
// perform a layout of the container
DeferredLayoutCommand layoutCmd = new DeferredLayoutCommand(host().getEditingDomain(), createdViews, host());
executeCommand(new ICommandProxy(layoutCmd));
}
createdViews.addAll(createdConnectionViews);
makeViewsImmutable(createdViews);
}
/**
* @generated
*/
private Collection<IAdaptable> refreshConnections() {
Domain2Notation domain2NotationMap = new Domain2Notation();
Collection<LesscodeLinkDescriptor> linkDescriptors = collectAllLinks(getDiagram(), domain2NotationMap);
Collection existingLinks = new LinkedList(getDiagram().getEdges());
for (Iterator linksIterator = existingLinks.iterator(); linksIterator.hasNext();) {
Edge nextDiagramLink = (Edge) linksIterator.next();
int diagramLinkVisualID = LesscodeVisualIDRegistry.getVisualID(nextDiagramLink);
if (diagramLinkVisualID == -1) {
if (nextDiagramLink.getSource() != null && nextDiagramLink.getTarget() != null) {
linksIterator.remove();
}
continue;
}
EObject diagramLinkObject = nextDiagramLink.getElement();
EObject diagramLinkSrc = nextDiagramLink.getSource().getElement();
EObject diagramLinkDst = nextDiagramLink.getTarget().getElement();
for (Iterator<LesscodeLinkDescriptor> linkDescriptorsIterator = linkDescriptors.iterator(); linkDescriptorsIterator.hasNext();) {
LesscodeLinkDescriptor nextLinkDescriptor = linkDescriptorsIterator.next();
if (diagramLinkObject == nextLinkDescriptor.getModelElement() && diagramLinkSrc == nextLinkDescriptor.getSource() && diagramLinkDst == nextLinkDescriptor.getDestination()
&& diagramLinkVisualID == nextLinkDescriptor.getVisualID()) {
linksIterator.remove();
linkDescriptorsIterator.remove();
break;
}
}
}
deleteViews(existingLinks.iterator());
return createConnections(linkDescriptors, domain2NotationMap);
}
/**
* @generated
*/
private Collection<LesscodeLinkDescriptor> collectAllLinks(View view, Domain2Notation domain2NotationMap) {
if (!RootContainerEditPart.MODEL_ID.equals(LesscodeVisualIDRegistry.getModelID(view))) {
return Collections.emptyList();
}
LinkedList<LesscodeLinkDescriptor> result = new LinkedList<LesscodeLinkDescriptor>();
switch (LesscodeVisualIDRegistry.getVisualID(view)) {
case RootContainerEditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getRootContainer_1000ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case SubjectEditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getSubject_2001ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case OneContainmentGroupEditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getOneContainmentGroup_2002ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case MultiContainmentGroupEditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getMultiContainmentGroup_2003ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case Subject2EditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getSubject_3001ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case Subject3EditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getSubject_3002ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case Subject4EditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getSubject_3003ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case Subject5EditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getSubject_3004ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
case ElementBasedLinkEditPart.VISUAL_ID: {
if (!domain2NotationMap.containsKey(view.getElement())) {
result.addAll(LesscodeDiagramUpdater.getElementBasedLink_4001ContainedLinks(view));
}
domain2NotationMap.putView(view.getElement(), view);
break;
}
}
for (Iterator children = view.getChildren().iterator(); children.hasNext();) {
result.addAll(collectAllLinks((View) children.next(), domain2NotationMap));
}
for (Iterator edges = view.getSourceEdges().iterator(); edges.hasNext();) {
result.addAll(collectAllLinks((View) edges.next(), domain2NotationMap));
}
return result;
}
/**
* @generated
*/
private Collection<IAdaptable> createConnections(Collection<LesscodeLinkDescriptor> linkDescriptors, Domain2Notation domain2NotationMap) {
LinkedList<IAdaptable> adapters = new LinkedList<IAdaptable>();
for (LesscodeLinkDescriptor nextLinkDescriptor : linkDescriptors) {
EditPart sourceEditPart = getSourceEditPart(nextLinkDescriptor, domain2NotationMap);
EditPart targetEditPart = getTargetEditPart(nextLinkDescriptor, domain2NotationMap);
if (sourceEditPart == null || targetEditPart == null) {
continue;
}
CreateConnectionViewRequest.ConnectionViewDescriptor descriptor = new CreateConnectionViewRequest.ConnectionViewDescriptor(nextLinkDescriptor.getSemanticAdapter(),
LesscodeVisualIDRegistry.getType(nextLinkDescriptor.getVisualID()), ViewUtil.APPEND, false, ((IGraphicalEditPart) getHost()).getDiagramPreferencesHint());
CreateConnectionViewRequest ccr = new CreateConnectionViewRequest(descriptor);
ccr.setType(RequestConstants.REQ_CONNECTION_START);
ccr.setSourceEditPart(sourceEditPart);
sourceEditPart.getCommand(ccr);
ccr.setTargetEditPart(targetEditPart);
ccr.setType(RequestConstants.REQ_CONNECTION_END);
Command cmd = targetEditPart.getCommand(ccr);
if (cmd != null && cmd.canExecute()) {
executeCommand(cmd);
IAdaptable viewAdapter = (IAdaptable) ccr.getNewObject();
if (viewAdapter != null) {
adapters.add(viewAdapter);
}
}
}
return adapters;
}
/**
* @generated
*/
private EditPart getEditPart(EObject domainModelElement, Domain2Notation domain2NotationMap) {
View view = (View) domain2NotationMap.get(domainModelElement);
if (view != null) {
return (EditPart) getHost().getViewer().getEditPartRegistry().get(view);
}
return null;
}
/**
* @generated
*/
private Diagram getDiagram() {
return ((View) getHost().getModel()).getDiagram();
}
/**
* @generated
*/
private EditPart getSourceEditPart(UpdaterLinkDescriptor descriptor, Domain2Notation domain2NotationMap) {
return getEditPart(descriptor.getSource(), domain2NotationMap);
}
/**
* @generated
*/
private EditPart getTargetEditPart(UpdaterLinkDescriptor descriptor, Domain2Notation domain2NotationMap) {
return getEditPart(descriptor.getDestination(), domain2NotationMap);
}
/**
* @generated
*/
protected final EditPart getHintedEditPart(EObject domainModelElement, Domain2Notation domain2NotationMap, int hintVisualId) {
View view = (View) domain2NotationMap.getHinted(domainModelElement, LesscodeVisualIDRegistry.getType(hintVisualId));
if (view != null) {
return (EditPart) getHost().getViewer().getEditPartRegistry().get(view);
}
return null;
}
/**
* @generated
*/
@SuppressWarnings("serial")
protected static class Domain2Notation extends HashMap<EObject, View> {
/**
* @generated
*/
public boolean containsDomainElement(EObject domainElement) {
return this.containsKey(domainElement);
}
/**
* @generated
*/
public View getHinted(EObject domainEObject, String hint) {
return this.get(domainEObject);
}
/**
* @generated
*/
public void putView(EObject domainElement, View view) {
if (!containsKey(view.getElement())) {
this.put(domainElement, view);
}
}
}
}
