1 files changed, 158 insertions, 0 deletions
diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.activity/src/org/eclipse/papyrus/uml/diagram/activity/edit/policies/CreateLinkActionCanonicalEditPolicy.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.activity/src/org/eclipse/papyrus/uml/diagram/activity/edit/policies/CreateLinkActionCanonicalEditPolicy.java
new file mode 100644
index 00000000000..cca299a651a
--- /dev/null
+++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.activity/src/org/eclipse/papyrus/uml/diagram/activity/edit/policies/CreateLinkActionCanonicalEditPolicy.java
@@ -0,0 +1,158 @@
+package org.eclipse.papyrus.uml.diagram.activity.edit.policies;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+
+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.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.papyrus.uml.diagram.activity.edit.parts.ActionInputPinInCreateLinkActionAsInputValueEditPart;
+import org.eclipse.papyrus.uml.diagram.activity.edit.parts.InputPinInCreateLinkActionAsInputValueEditPart;
+import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ValuePinInCreateLinkActionAsInputValueEditPart;
+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 CreateLinkActionCanonicalEditPolicy 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.getLinkAction_InputValue();
+	}
+
+	/**
+	 * @generated
+	 */
+	protected List<EObject> getSemanticChildrenList() {
+		View viewObject = (View) getHost().getModel();
+		LinkedList<EObject> result = new LinkedList<EObject>();
+		List<UMLNodeDescriptor> childDescriptors = UMLDiagramUpdater.INSTANCE.getCreateLinkAction_3117SemanticChildren(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);
+		return visualID == InputPinInCreateLinkActionAsInputValueEditPart.VISUAL_ID || visualID == ValuePinInCreateLinkActionAsInputValueEditPart.VISUAL_ID || visualID == ActionInputPinInCreateLinkActionAsInputValueEditPart.VISUAL_ID;
+	}
+
+	/**
+	 * @generated
+	 */
+	protected void refreshSemantic() {
+		if (resolveSemanticElement() == null) {
+			return;
+		}
+		LinkedList<IAdaptable> createdViews = new LinkedList<IAdaptable>();
+		List<UMLNodeDescriptor> childDescriptors = UMLDiagramUpdater.INSTANCE.getCreateLinkAction_3117SemanticChildren((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())) {
+						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 (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);
+	}
+}