/** | |
* <copyright> | |
* | |
* Copyright (c) 2013 itemis and others. | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Eclipse Public License v2.0 | |
* which accompanies this distribution, and is available at | |
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html | |
* | |
* Contributors: | |
* itemis - Initial API and implementation | |
* | |
* </copyright> | |
*/ | |
package org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.edit.policies; | |
import java.util.ArrayList; | |
import java.util.Collection; | |
import java.util.Collections; | |
import java.util.HashMap; | |
import java.util.Iterator; | |
import java.util.LinkedList; | |
import java.util.List; | |
import java.util.Map; | |
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.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.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.sphinx.examples.hummingbird20.diagram.gmf.edit.parts.ApplicationEditPart; | |
import org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.edit.parts.ComponentEditPart; | |
import org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.edit.parts.ConnectionEditPart; | |
import org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.part.Hummingbird20DiagramUpdater; | |
import org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.part.Hummingbird20LinkDescriptor; | |
import org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.part.Hummingbird20NodeDescriptor; | |
import org.eclipse.sphinx.examples.hummingbird20.diagram.gmf.part.Hummingbird20VisualIDRegistry; | |
import org.eclipse.sphinx.examples.hummingbird20.instancemodel.InstanceModel20Package; | |
/** | |
* @generated | |
*/ | |
public class ApplicationCanonicalEditPolicy extends CanonicalEditPolicy { | |
/** | |
* @generated | |
*/ | |
@Override | |
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 | |
*/ | |
@Override | |
protected EStructuralFeature getFeatureToSynchronize() { | |
return InstanceModel20Package.eINSTANCE.getApplication_Components(); | |
} | |
/** | |
* @generated | |
*/ | |
@Override | |
@SuppressWarnings("rawtypes") | |
protected List getSemanticChildrenList() { | |
View viewObject = (View) getHost().getModel(); | |
LinkedList<EObject> result = new LinkedList<EObject>(); | |
List<Hummingbird20NodeDescriptor> childDescriptors = Hummingbird20DiagramUpdater.getApplication_1000SemanticChildren(viewObject); | |
for (Hummingbird20NodeDescriptor d : childDescriptors) { | |
result.add(d.getModelElement()); | |
} | |
return result; | |
} | |
/** | |
* @generated | |
*/ | |
@Override | |
protected boolean isOrphaned(Collection<EObject> semanticChildren, final View view) { | |
return isMyDiagramElement(view) && !semanticChildren.contains(view.getElement()); | |
} | |
/** | |
* @generated | |
*/ | |
private boolean isMyDiagramElement(View view) { | |
return ComponentEditPart.VISUAL_ID == Hummingbird20VisualIDRegistry.getVisualID(view); | |
} | |
/** | |
* @generated | |
*/ | |
@Override | |
protected void refreshSemantic() { | |
if (resolveSemanticElement() == null) { | |
return; | |
} | |
LinkedList<IAdaptable> createdViews = new LinkedList<IAdaptable>(); | |
List<Hummingbird20NodeDescriptor> childDescriptors = Hummingbird20DiagramUpdater.getApplication_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<Hummingbird20NodeDescriptor> descriptorsIterator = childDescriptors.iterator(); descriptorsIterator.hasNext();) { | |
Hummingbird20NodeDescriptor next = descriptorsIterator.next(); | |
String hint = Hummingbird20VisualIDRegistry.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 (Hummingbird20NodeDescriptor next : childDescriptors) { | |
String hint = Hummingbird20VisualIDRegistry.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() { | |
Map<EObject, View> domain2NotationMap = new HashMap<EObject, View>(); | |
Collection<Hummingbird20LinkDescriptor> linkDescriptors = collectAllLinks(getDiagram(), domain2NotationMap); | |
Collection existingLinks = new LinkedList(getDiagram().getEdges()); | |
for (Iterator linksIterator = existingLinks.iterator(); linksIterator.hasNext();) { | |
Edge nextDiagramLink = (Edge) linksIterator.next(); | |
int diagramLinkVisualID = Hummingbird20VisualIDRegistry.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<Hummingbird20LinkDescriptor> linkDescriptorsIterator = linkDescriptors.iterator(); linkDescriptorsIterator.hasNext();) { | |
Hummingbird20LinkDescriptor 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<Hummingbird20LinkDescriptor> collectAllLinks(View view, Map<EObject, View> domain2NotationMap) { | |
if (!ApplicationEditPart.MODEL_ID.equals(Hummingbird20VisualIDRegistry.getModelID(view))) { | |
return Collections.emptyList(); | |
} | |
LinkedList<Hummingbird20LinkDescriptor> result = new LinkedList<Hummingbird20LinkDescriptor>(); | |
switch (Hummingbird20VisualIDRegistry.getVisualID(view)) { | |
case ApplicationEditPart.VISUAL_ID: { | |
if (!domain2NotationMap.containsKey(view.getElement())) { | |
result.addAll(Hummingbird20DiagramUpdater.getApplication_1000ContainedLinks(view)); | |
} | |
if (!domain2NotationMap.containsKey(view.getElement()) || view.getEAnnotation("Shortcut") == null) { //$NON-NLS-1$ | |
domain2NotationMap.put(view.getElement(), view); | |
} | |
break; | |
} | |
case ComponentEditPart.VISUAL_ID: { | |
if (!domain2NotationMap.containsKey(view.getElement())) { | |
result.addAll(Hummingbird20DiagramUpdater.getComponent_2001ContainedLinks(view)); | |
} | |
if (!domain2NotationMap.containsKey(view.getElement()) || view.getEAnnotation("Shortcut") == null) { //$NON-NLS-1$ | |
domain2NotationMap.put(view.getElement(), view); | |
} | |
break; | |
} | |
case ConnectionEditPart.VISUAL_ID: { | |
if (!domain2NotationMap.containsKey(view.getElement())) { | |
result.addAll(Hummingbird20DiagramUpdater.getConnection_4001ContainedLinks(view)); | |
} | |
if (!domain2NotationMap.containsKey(view.getElement()) || view.getEAnnotation("Shortcut") == null) { //$NON-NLS-1$ | |
domain2NotationMap.put(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<Hummingbird20LinkDescriptor> linkDescriptors, Map<EObject, View> domain2NotationMap) { | |
LinkedList<IAdaptable> adapters = new LinkedList<IAdaptable>(); | |
for (Hummingbird20LinkDescriptor nextLinkDescriptor : linkDescriptors) { | |
EditPart sourceEditPart = getEditPart(nextLinkDescriptor.getSource(), domain2NotationMap); | |
EditPart targetEditPart = getEditPart(nextLinkDescriptor.getDestination(), domain2NotationMap); | |
if (sourceEditPart == null || targetEditPart == null) { | |
continue; | |
} | |
CreateConnectionViewRequest.ConnectionViewDescriptor descriptor = new CreateConnectionViewRequest.ConnectionViewDescriptor( | |
nextLinkDescriptor.getSemanticAdapter(), Hummingbird20VisualIDRegistry.getType(nextLinkDescriptor.getVisualID()), | |
ViewUtil.APPEND, false, ((IGraphicalEditPart) getHost()).getDiagramPreferencesHint()); | |
CreateConnectionViewRequest ccr = new CreateConnectionViewRequest(descriptor); | |
ccr.setType(org.eclipse.gef.RequestConstants.REQ_CONNECTION_START); | |
ccr.setSourceEditPart(sourceEditPart); | |
sourceEditPart.getCommand(ccr); | |
ccr.setTargetEditPart(targetEditPart); | |
ccr.setType(org.eclipse.gef.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, Map<EObject, View> domain2NotationMap) { | |
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(); | |
} | |
} |