/*
*
*/
package comrel.diagram.edit.policies;
import java.util.ArrayList;
import java.util.Collection;
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.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.editpolicies.CanonicalEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.View;
import comrel.ComrelPackage;
import comrel.diagram.edit.parts.MultiInputPort4EditPart;
import comrel.diagram.edit.parts.MultiOutputPortEditPart;
import comrel.diagram.edit.parts.SingleInputPort5EditPart;
import comrel.diagram.part.ComrelDiagramUpdater;
import comrel.diagram.part.ComrelNodeDescriptor;
import comrel.diagram.part.ComrelVisualIDRegistry;
/**
* @generated
*/
public class MultiFeatureUnit5CanonicalEditPolicy extends CanonicalEditPolicy {
/**
* @generated
*/
private Set<EStructuralFeature> myFeaturesToSynchronize;
/**
* @generated
*/
protected Set getFeaturesToSynchronize() {
if (myFeaturesToSynchronize == null) {
myFeaturesToSynchronize = new HashSet<EStructuralFeature>();
myFeaturesToSynchronize.add(ComrelPackage.eINSTANCE
.getMultiFeatureUnit_InputPort());
myFeaturesToSynchronize.add(ComrelPackage.eINSTANCE
.getMultiFeatureUnit_SecondaryInputPorts());
myFeaturesToSynchronize.add(ComrelPackage.eINSTANCE
.getMultiFeatureUnit_OutputPort());
}
return myFeaturesToSynchronize;
}
/**
* @generated
*/
@SuppressWarnings("rawtypes")
protected List getSemanticChildrenList() {
View viewObject = (View) getHost().getModel();
LinkedList<EObject> result = new LinkedList<EObject>();
List<ComrelNodeDescriptor> childDescriptors = ComrelDiagramUpdater
.getMultiFeatureUnit_3062SemanticChildren(viewObject);
for (ComrelNodeDescriptor 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 = ComrelVisualIDRegistry.getVisualID(view);
return visualID == SingleInputPort5EditPart.VISUAL_ID
|| visualID == MultiInputPort4EditPart.VISUAL_ID
|| visualID == MultiOutputPortEditPart.VISUAL_ID;
}
/**
* @generated
*/
protected void refreshSemantic() {
if (resolveSemanticElement() == null) {
return;
}
LinkedList<IAdaptable> createdViews = new LinkedList<IAdaptable>();
List<ComrelNodeDescriptor> childDescriptors = ComrelDiagramUpdater
.getMultiFeatureUnit_3062SemanticChildren((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<ComrelNodeDescriptor> descriptorsIterator = childDescriptors
.iterator(); descriptorsIterator.hasNext();) {
ComrelNodeDescriptor next = descriptorsIterator.next();
String hint = ComrelVisualIDRegistry.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 (ComrelNodeDescriptor next : childDescriptors) {
String hint = ComrelVisualIDRegistry.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);
}
if (createdViews.size() > 1) {
// perform a layout of the container
DeferredLayoutCommand layoutCmd = new DeferredLayoutCommand(host()
.getEditingDomain(), createdViews, host());
executeCommand(new ICommandProxy(layoutCmd));
}
makeViewsImmutable(createdViews);
}
}
