AssociationClassOperationsCanonicalEditPolicy.java

package org.eclipse.uml2.diagram.clazz.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.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.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 org.eclipse.uml2.diagram.clazz.edit.parts.AssociationClass2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.AssociationClassEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.AssociationClassRhombEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Class2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Class3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Class4EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Class5EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.ClassEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.CommentEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.ConstraintEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.DataType2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.DataType3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.DataTypeEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.DependencyEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.ElementImportEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Enumeration2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Enumeration3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.EnumerationEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.EnumerationLiteralEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.ExpressionEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.GeneralizationSetEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.InstanceSpecification2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.InstanceSpecification3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.InstanceSpecification4EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.InstanceSpecificationEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Interface2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Interface3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Interface4EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Interface5EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.InterfaceEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.LiteralIntegerEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.LiteralStringEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Operation2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Operation3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Operation4EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Operation5EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Operation6EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.OperationEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Package2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Package3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Package4EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Package6EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.PackageAsFrameEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.PortEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.PrimitiveType2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.PrimitiveType3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.PrimitiveTypeEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Property2EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Property3EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Property4EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Property5EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.Property6EditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.PropertyEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.RedefinableTemplateSignatureEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.SlotEditPart;
import org.eclipse.uml2.diagram.clazz.part.UMLDiagramUpdater;
import org.eclipse.uml2.diagram.clazz.part.UMLNodeDescriptor;
import org.eclipse.uml2.diagram.clazz.part.UMLVisualIDRegistry;
import org.eclipse.uml2.diagram.common.genapi.IUpdaterNodeDescriptor;
import org.eclipse.uml2.uml.UMLPackage;

/**
 * @generated
 */
public class AssociationClassOperationsCanonicalEditPolicy extends CanonicalEditPolicy {

	/**
	* @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 EStructuralFeature getFeatureToSynchronize() {
		return UMLPackage.eINSTANCE.getClass_OwnedOperation();
	}

	/**
	 * @generated
	 */
	@SuppressWarnings("rawtypes")
	protected List getSemanticChildrenList() {
		View viewObject = (View) getHost().getModel();
		LinkedList<EObject> result = new LinkedList<EObject>();
		List<UMLNodeDescriptor> childDescriptors = UMLDiagramUpdater.getAssociationClassOperations_7025SemanticChildren(viewObject);
		for (UMLNodeDescriptor d : childDescriptors) {
			result.add(d.getModelElement());
		}
		return result;
	}

	/**
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	protected boolean isOrphaned(Collection<EObject> semanticChildren, final View view) {
		return isMyDiagramElement(view) ? !semanticChildren.contains(view.getElement()) : isDefinitelyNotMyDiagramElement(view);
	}

	/**
	 * @generated
	 */
	private boolean isDefinitelyNotMyDiagramElement(View view) {
		int visualID = UMLVisualIDRegistry.getVisualID(view);
		switch (visualID) {
		case Package2EditPart.VISUAL_ID:
		case Class2EditPart.VISUAL_ID:
		case AssociationClass2EditPart.VISUAL_ID:
		case DataType2EditPart.VISUAL_ID:
		case PrimitiveType2EditPart.VISUAL_ID:
		case Enumeration2EditPart.VISUAL_ID:
		case InterfaceEditPart.VISUAL_ID:
		case ConstraintEditPart.VISUAL_ID:
		case InstanceSpecification2EditPart.VISUAL_ID:
		case DependencyEditPart.VISUAL_ID:
		case GeneralizationSetEditPart.VISUAL_ID:
		case Interface2EditPart.VISUAL_ID:
		case Package4EditPart.VISUAL_ID:
		case AssociationClassRhombEditPart.VISUAL_ID:
		case PackageAsFrameEditPart.VISUAL_ID:
		case InstanceSpecification4EditPart.VISUAL_ID:
		case CommentEditPart.VISUAL_ID:
		case Package3EditPart.VISUAL_ID:
		case ClassEditPart.VISUAL_ID:
		case DataTypeEditPart.VISUAL_ID:
		case PrimitiveTypeEditPart.VISUAL_ID:
		case EnumerationEditPart.VISUAL_ID:
		case AssociationClassEditPart.VISUAL_ID:
		case Interface3EditPart.VISUAL_ID:
		case InstanceSpecificationEditPart.VISUAL_ID:
		case PropertyEditPart.VISUAL_ID:
		case OperationEditPart.VISUAL_ID:
		case Class3EditPart.VISUAL_ID:
		case PortEditPart.VISUAL_ID:
		case RedefinableTemplateSignatureEditPart.VISUAL_ID:
		case Property2EditPart.VISUAL_ID:
		case Property3EditPart.VISUAL_ID:
		case Operation3EditPart.VISUAL_ID:
		case Property4EditPart.VISUAL_ID:
		case Operation4EditPart.VISUAL_ID:
		case EnumerationLiteralEditPart.VISUAL_ID:
		case Property5EditPart.VISUAL_ID:
		case Operation5EditPart.VISUAL_ID:
		case SlotEditPart.VISUAL_ID:
		case Property6EditPart.VISUAL_ID:
		case Operation6EditPart.VISUAL_ID:
		case Class4EditPart.VISUAL_ID:
		case ElementImportEditPart.VISUAL_ID:
		case Package6EditPart.VISUAL_ID:
		case Class5EditPart.VISUAL_ID:
		case Enumeration3EditPart.VISUAL_ID:
		case InstanceSpecification3EditPart.VISUAL_ID:
		case DataType3EditPart.VISUAL_ID:
		case PrimitiveType3EditPart.VISUAL_ID:
		case Interface4EditPart.VISUAL_ID:
		case Interface5EditPart.VISUAL_ID:
		case LiteralStringEditPart.VISUAL_ID:
		case LiteralIntegerEditPart.VISUAL_ID:
		case ExpressionEditPart.VISUAL_ID:
			return true;

		}
		return false;
	}

	/**
	 * @generated
	 */
	private boolean isMyDiagramElement(View view) {
		return Operation2EditPart.VISUAL_ID == UMLVisualIDRegistry.getVisualID(view);
	}

	/**
	 * @generated
	 */
	protected void refreshSemantic() {
		if (resolveSemanticElement() == null) {
			return;
		}
		LinkedList<IAdaptable> createdViews = new LinkedList<IAdaptable>();
		List<UMLNodeDescriptor> childDescriptors = UMLDiagramUpdater.getAssociationClassOperations_7025SemanticChildren((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<UMLNodeDescriptor> descriptorsIterator = childDescriptors.iterator(); descriptorsIterator.hasNext();) {
			UMLNodeDescriptor next = descriptorsIterator.next();
			String hint = UMLVisualIDRegistry.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())) {
					if (UMLVisualIDRegistry.checkNodeVisualID((View) (getHost().getModel()), semanticElement, next.getVisualID())) {
						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.getLast());
			}
		}
		// 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 (UMLNodeDescriptor next : childDescriptors) {
			String hint = UMLVisualIDRegistry.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);
	}

}