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/*****************************************************************************
* Copyright (c) 2010, 2014 CEA LIST and others.
*
* 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:
* Mickael ADAM (ALL4TEC) mickael.adam@all4tec.net - Initial API and Implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.common.editpolicies;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.uml.diagram.common.Activator;
import org.eclipse.papyrus.uml.diagram.common.helper.FloatingLabelHelper;
import org.eclipse.papyrus.uml.tools.utils.ICustomAppearance;
import org.eclipse.uml2.uml.MultiplicityElement;
import org.eclipse.uml2.uml.NamedElement;
import org.eclipse.uml2.uml.TypedElement;
import org.eclipse.uml2.uml.UMLPackage;
/**
* Specific edit policy for label displaying stereotypes and their properties for edges representing
* UML elements.
*/
public class MaskManagedFloatingLabelEditPolicy extends AbstractMaskManagedEditPolicy {
/**
* Creates a new PropertyLabelEditPolicy.
*/
public MaskManagedFloatingLabelEditPolicy() {
super();
}
/**
* {@inheritDoc}
*/
@Override
public void addAdditionalListeners() {
super.addAdditionalListeners();
NamedElement umlElement = getUMLElement();
// check host semantic element is not null
if (umlElement == null) {
Activator.log.error("No semantic element present when adding listeners in FloatingLabelEditPolicy", null);
return;
}
// adds a listener to the element itself, and to linked elements, like Type
if (umlElement instanceof TypedElement) {
if (((TypedElement) umlElement).getType() != null) {
getDiagramEventBroker().addNotificationListener(((TypedElement) umlElement).getType(), this);
}
}
if (umlElement instanceof MultiplicityElement) {
getDiagramEventBroker().addNotificationListener(((MultiplicityElement) umlElement).getUpperValue(), this);
getDiagramEventBroker().addNotificationListener(((MultiplicityElement) umlElement).getLowerValue(), this);
}
}
/**
* {@inheritDoc}
*/
@Override
public Collection<String> getDefaultDisplayValue() {
return ICustomAppearance.DEFAULT_UML_FLOATING_LABEL;
}
/**
* {@inheritDoc}
*/
@Override
public Map<String, String> getMasks() {
return FloatingLabelHelper.getInstance().getMasks();
}
/**
* {@inheritedDoc}.
*
* @return the UML element
*/
@Override
public NamedElement getUMLElement() {
EObject element = super.getUMLElement();
if (element instanceof NamedElement) {
return (NamedElement) element;
}
return null;
}
/**
* {@inheritedDoc}.
*
* @param notification
* the notification
*/
@Override
public void notifyChanged(Notification notification) {
super.notifyChanged(notification);
// change the label of the figure managed by the host edit part (managed by the parent edit
// part in general...)
// it must be changed only if:
// - the annotation corresponding to the display of the stereotype changes
// - the stereotype application list has changed
Object object = notification.getNotifier();
NamedElement property = getUMLElement();
Object feature = notification.getFeature();
if (object == null || property == null || feature == null) {
return;
}
if (feature == UMLPackage.eINSTANCE.getLiteralInteger_Value()) {
refreshDisplay();
} else if (feature == UMLPackage.eINSTANCE.getLiteralUnlimitedNatural_Value()) {
refreshDisplay();
}
if (object.equals(property)) {
notifyNamedElementChanged(property, notification);
}
if (isMaskManagedAnnotation(object)) {
refreshDisplay();
}
if (isRemovedMaskManagedLabelAnnotation(object, notification)) {
refreshDisplay();
}
}
/**
* notifies that the named element has changed.
*
* @param namedElement
* the property that has changed
* @param notification
* the notification send when the element has been changed
*/
protected void notifyNamedElementChanged(NamedElement namedElement, Notification notification) {
switch (notification.getFeatureID(NamedElement.class)) {
case UMLPackage.NAMED_ELEMENT__NAME:
refreshDisplay();
break;
case UMLPackage.NAMED_ELEMENT__VISIBILITY:
refreshDisplay();
break;
default:
// does nothing in other cases
break;
}
}
/**
* Returns the view controlled by the host edit part.
*
* @return the view controlled by the host edit part
*/
@Override
protected View getView() {
EditPart host = getHost();
if (host == null) {
return null;
}
Object hostView = host.getModel();
if (hostView instanceof View) {
Object parentView = ((View) hostView).eContainer();
if (parentView instanceof View) {
return (View) parentView;
}
return null;
}
return null;
}
/**
* Refreshes the display of the edit part.
*/
@Override
public void refreshDisplay() {
// calls the helper for this edit Part
FloatingLabelHelper.getInstance().refreshEditPartDisplay((GraphicalEditPart) getHost());
}
/**
* {@inheritDoc}
*/
@Override
protected void removeAdditionalListeners() {
super.removeAdditionalListeners();
NamedElement umlElement = getUMLElement();
if (umlElement == null) {
// check semantic element is not null and this is really an instance of NamedElement
return;
}
// remove listener to the element itself, and to linked elements, like Type
if (umlElement instanceof TypedElement) {
if (((TypedElement) umlElement).getType() != null) {
getDiagramEventBroker().removeNotificationListener(((TypedElement) umlElement).getType(), this);
}
}
if (umlElement instanceof MultiplicityElement) {
getDiagramEventBroker().removeNotificationListener(((MultiplicityElement) umlElement).getUpperValue(), this);
getDiagramEventBroker().removeNotificationListener(((MultiplicityElement) umlElement).getLowerValue(), this);
}
}
/**
* @see org.eclipse.papyrus.uml.diagram.common.editpolicies.AbstractMaskManagedEditPolicy#getCurrentDisplayValue()
*
* @return
*/
@Override
public Collection<String> getCurrentDisplayValue() {
if (getView() == null) {
return Collections.emptySet();
}
return super.getCurrentDisplayValue();
}
}
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