InterruptibleActivityRegionInterruptibleActivityRegionContentCompartmentCanonicalEditPolicy.java example

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/*****************************************************************************
 * Copyright (c) 2010 Atos Origin.
 *
 *    
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Atos Origin - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.uml.diagram.activity.edit.policies;

import java.util.ArrayList;
import java.util.Collection;
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.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
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.SetBoundsCommand;
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.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.Bounds;
import org.eclipse.gmf.runtime.notation.Location;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.Size;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.AcceptEventActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ActivityFinalNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.AddStructuralFeatureValueActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.AddVariableValueActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.BroadcastSignalActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.CallBehaviorActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.CallOperationActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.CentralBufferNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.CommentEditPartCN;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ConditionalNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ConstraintAsLocalPostcondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ConstraintAsLocalPrecondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ConstraintEditPartCN;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.CreateObjectActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.DataStoreNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.DecisionNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.DestroyObjectActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.DurationConstraintAsLocalPostcondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.DurationConstraintAsLocalPrecondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ExpansionRegionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.FlowFinalNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ForkNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.InitialNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.IntervalConstraintAsLocalPostcondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.IntervalConstraintAsLocalPrecondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.JoinNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.LoopNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.MergeNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.OpaqueActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ReadSelfActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ReadStructuralFeatureActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ReadVariableActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.SendObjectActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.SendSignalActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.SequenceNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.StructuredActivityNodeEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.TimeConstraintAsLocalPostcondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.TimeConstraintAsLocalPrecondEditPart;
import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ValueSpecificationActionEditPart;
import org.eclipse.papyrus.uml.diagram.activity.part.UMLDiagramUpdater;
import org.eclipse.papyrus.uml.diagram.activity.part.UMLNodeDescriptor;
import org.eclipse.papyrus.uml.diagram.activity.part.UMLVisualIDRegistry;
import org.eclipse.uml2.uml.UMLPackage;

/**
 * @generated
 */
public class InterruptibleActivityRegionInterruptibleActivityRegionContentCompartmentCanonicalEditPolicy 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(UMLPackage.eINSTANCE.getActivity_OwnedNode());
			myFeaturesToSynchronize.add(UMLPackage.eINSTANCE.getActivity_OwnedGroup());
			myFeaturesToSynchronize.add(UMLPackage.eINSTANCE.getAction_LocalPrecondition());
			myFeaturesToSynchronize.add(UMLPackage.eINSTANCE.getAction_LocalPostcondition());
			myFeaturesToSynchronize.add(UMLPackage.eINSTANCE.getElement_OwnedComment());
			myFeaturesToSynchronize.add(UMLPackage.eINSTANCE.getNamespace_OwnedRule());
		}
		return myFeaturesToSynchronize;
	}

	/**
	 * @generated
	 */
	@SuppressWarnings("rawtypes")
	protected List getSemanticChildrenList() {
		View viewObject = (View)getHost().getModel();
		LinkedList<EObject> result = new LinkedList<EObject>();
		List<UMLNodeDescriptor> childDescriptors = UMLDiagramUpdater.getInterruptibleActivityRegionInterruptibleActivityRegionContentCompartment_7007SemanticChildren(viewObject);
		for(UMLNodeDescriptor 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 = UMLVisualIDRegistry.getVisualID(view);
		switch(visualID) {
		case InitialNodeEditPart.VISUAL_ID:
		case ActivityFinalNodeEditPart.VISUAL_ID:
		case FlowFinalNodeEditPart.VISUAL_ID:
		case OpaqueActionEditPart.VISUAL_ID:
		case CallBehaviorActionEditPart.VISUAL_ID:
		case CallOperationActionEditPart.VISUAL_ID:
		case DecisionNodeEditPart.VISUAL_ID:
		case MergeNodeEditPart.VISUAL_ID:
		case ForkNodeEditPart.VISUAL_ID:
		case JoinNodeEditPart.VISUAL_ID:
		case DataStoreNodeEditPart.VISUAL_ID:
		case SendObjectActionEditPart.VISUAL_ID:
		case SendSignalActionEditPart.VISUAL_ID:
		case AcceptEventActionEditPart.VISUAL_ID:
		case ValueSpecificationActionEditPart.VISUAL_ID:
		case ConditionalNodeEditPart.VISUAL_ID:
		case ExpansionRegionEditPart.VISUAL_ID:
		case LoopNodeEditPart.VISUAL_ID:
		case SequenceNodeEditPart.VISUAL_ID:
		case StructuredActivityNodeEditPart.VISUAL_ID:
		case ReadSelfActionEditPart.VISUAL_ID:
		case DurationConstraintAsLocalPrecondEditPart.VISUAL_ID:
		case DurationConstraintAsLocalPostcondEditPart.VISUAL_ID:
		case TimeConstraintAsLocalPrecondEditPart.VISUAL_ID:
		case TimeConstraintAsLocalPostcondEditPart.VISUAL_ID:
		case IntervalConstraintAsLocalPrecondEditPart.VISUAL_ID:
		case IntervalConstraintAsLocalPostcondEditPart.VISUAL_ID:
		case ConstraintAsLocalPrecondEditPart.VISUAL_ID:
		case ConstraintAsLocalPostcondEditPart.VISUAL_ID:
		case CreateObjectActionEditPart.VISUAL_ID:
		case ReadStructuralFeatureActionEditPart.VISUAL_ID:
		case AddStructuralFeatureValueActionEditPart.VISUAL_ID:
		case DestroyObjectActionEditPart.VISUAL_ID:
		case ReadVariableActionEditPart.VISUAL_ID:
		case AddVariableValueActionEditPart.VISUAL_ID:
		case BroadcastSignalActionEditPart.VISUAL_ID:
		case CentralBufferNodeEditPart.VISUAL_ID:
		case CommentEditPartCN.VISUAL_ID:
		case ConstraintEditPartCN.VISUAL_ID:
			return true;
		}
		return false;
	}

	/**
	 * @generated
	 */
	protected void refreshSemantic() {
		if(resolveSemanticElement() == null) {
			return;
		}
		LinkedList<IAdaptable> createdViews = new LinkedList<IAdaptable>();
		List<UMLNodeDescriptor> childDescriptors = UMLDiagramUpdater.getInterruptibleActivityRegionInterruptibleActivityRegionContentCompartment_7007SemanticChildren((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)
		HashMap<UMLNodeDescriptor, LinkedList<View>> potentialViews = new HashMap<UMLNodeDescriptor, LinkedList<View>>();
		//
		// 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
			LinkedList<View> potentialMatch = new LinkedList<View>(); // semanticElement matches, hint does not
			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
					} else {
						potentialMatch.add(childView);
					}
				}
			}
			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());
			} else if(potentialMatch.size() > 0) {
				potentialViews.put(next, potentialMatch);
			}
		}
		// 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);
		//
		CompositeTransactionalCommand boundsCommand = new CompositeTransactionalCommand(host().getEditingDomain(), DiagramUIMessages.SetLocationCommand_Label_Resize);
		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);
			LinkedList<View> possibleMatches = potentialViews.get(next);
			if(possibleMatches != null) {
				// from potential matches, leave those that were not eventually used for some other NodeDescriptor (i.e. those left as orphaned)
				possibleMatches.retainAll(knownViewChildren);
			}
			if(possibleMatches != null && !possibleMatches.isEmpty()) {
				View originalView = possibleMatches.getFirst();
				knownViewChildren.remove(originalView); // remove not to copy properties of the same view again and again
				// add command to copy properties
				if(originalView instanceof Node) {
					if(((Node)originalView).getLayoutConstraint() instanceof Bounds) {
						Bounds b = (Bounds)((Node)originalView).getLayoutConstraint();
						boundsCommand.add(new SetBoundsCommand(boundsCommand.getEditingDomain(), boundsCommand.getLabel(), descriptor, new Rectangle(b.getX(), b.getY(), b.getWidth(), b.getHeight())));
					} else if(((Node)originalView).getLayoutConstraint() instanceof Location) {
						Location l = (Location)((Node)originalView).getLayoutConstraint();
						boundsCommand.add(new SetBoundsCommand(boundsCommand.getEditingDomain(), boundsCommand.getLabel(), descriptor, new Point(l.getX(), l.getY())));
					} else if(((Node)originalView).getLayoutConstraint() instanceof Size) {
						Size s = (Size)((Node)originalView).getLayoutConstraint();
						boundsCommand.add(new SetBoundsCommand(boundsCommand.getEditingDomain(), boundsCommand.getLabel(), descriptor, new Dimension(s.getWidth(), s.getHeight())));
					}
				}
			}
		}
		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);
			if(boundsCommand.canExecute()) {
				executeCommand(new ICommandProxy(boundsCommand.reduce()));
			}
			@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);
	}
}