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/*****************************************************************************
* Copyright (c) 2008 CEA LIST.
*
*
* 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:
* Remi Schnekenburger (CEA LIST) remi.schnekenburger@cea.fr - Initial API and implementation
* Gabriel Pascual (ALL4TEC) gabriel.pascual@all4tec.fr - Bug 393532
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.common.editparts;
import java.util.Iterator;
import java.util.StringTokenizer;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.infra.gmfdiag.common.editpart.ConnectionEditPart;
import org.eclipse.papyrus.uml.appearance.helper.AppliedStereotypeHelper;
import org.eclipse.papyrus.uml.appearance.helper.UMLVisualInformationPapyrusConstant;
import org.eclipse.papyrus.uml.diagram.common.Activator;
import org.eclipse.papyrus.uml.diagram.common.editpolicies.ApplyStereotypeEditPolicy;
import org.eclipse.papyrus.uml.diagram.common.editpolicies.ShowHideLabelEditPolicy;
import org.eclipse.papyrus.uml.diagram.common.figure.edge.UMLEdgeFigure;
import org.eclipse.papyrus.uml.diagram.common.service.ApplyStereotypeRequest;
import org.eclipse.papyrus.uml.diagram.common.stereotype.StereotypeDisplayHelper;
import org.eclipse.papyrus.uml.tools.listeners.StereotypeElementListener.StereotypeExtensionNotification;
import org.eclipse.swt.graphics.Image;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Stereotype;
/**
* Abstract edit part for all connection nodes that control UML elements
* represented by edges. It then defines basic behavior for Stereotype
* management. It has facilities to retrieve UML element controlled by this edit
* part
*/
public abstract class UMLConnectionNodeEditPart extends ConnectionEditPart implements IUMLEditPart, IEditpartListenerAccess {
/**
* Creates a new UMLConnectionNodeEditPart
*
* @param view
* owned view by this edit part
*/
public UMLConnectionNodeEditPart(View view) {
super(view);
}
/**
* {@inheritDoc}
*/
@Override
protected void addSemanticListeners() {
super.addSemanticListeners();
// retrieve element
final Element element = getUMLElement();
if (element == null) {
return;
}
// add listener to react to the application and remove of a stereotype
addListenerFilter(STEREOTYPABLE_ELEMENT, this, resolveSemanticElement());
// add a lister to each already applied stereotyped
for (EObject stereotypeApplication : element.getStereotypeApplications()) {
addListenerFilter(STEREOTYPED_ELEMENT, this, stereotypeApplication);
}
}
@Override
public final Iterator getEventListenerIterator(Class clazz) {
return getEventListeners(clazz);
}
/**
* {@inheritDoc}
*/
@Override
protected void handleNotificationEvent(Notification event) {
super.handleNotificationEvent(event);
// NOTA: should check here which element has to be refreshed
// check if this concerns a stereotype application or unapplication
final int eventType = event.getEventType();
if (eventType == StereotypeExtensionNotification.STEREOTYPE_APPLIED_TO_ELEMENT) {
// a stereotype was applied to the notifier
// then a new listener should be added to the stereotype application
addListenerFilter(STEREOTYPED_ELEMENT, this, (EObject) event.getNewValue());
}
// // refresh the figure if stereotypes have changed
// if (resolveSemanticElement() != null) {
// refreshAppliedStereotypes();
// }
}
/**
* {@inheritDoc}
*/
@Override
protected void createDefaultEditPolicies() {
super.createDefaultEditPolicies();
// adds the stereotype application edit policy
installEditPolicy(ApplyStereotypeRequest.APPLY_STEREOTYPE_REQUEST, new ApplyStereotypeEditPolicy());
// adds a custom EditPolicy to manage the displaying of each label on
// the connector
// this editpolicy erase ConnectionLabelsEditPolicy
installEditPolicy(ShowHideLabelEditPolicy.SHOW_HIDE_LABEL_ROLE, new ShowHideLabelEditPolicy());
}
/**
* {@inheritDoc}
*/
@Override
public EditPart getTargetEditPart(Request request) {
if (ApplyStereotypeRequest.APPLY_STEREOTYPE_REQUEST.equals(request.getType())) {
return this;
}
return super.getTargetEditPart(request);
}
/**
* <p>
* Returns the primary shape being the View of this edit part.
* </p>
* <b>Warning</b> It should never return <code>null</code>
*
* @return the primary shape associated to this edit part.
*/
@Override
public abstract UMLEdgeFigure getPrimaryShape();
/**
* Refresh the display of stereotypes for this uml node edit part.
*/
public void refreshAppliedStereotypes() {
// computes the stereotypes to be displayed
final String stereotypesToDisplay = stereotypesToDisplay();
// computes the icon to be displayed
final Image imageToDisplay = stereotypeIconToDisplay();
// if the string is not empty, then, the figure has to display it. Else,
// it displays nothing
if (stereotypesToDisplay != "" || imageToDisplay != null) {
getPrimaryShape().setStereotypeDisplay(stereotypesToDisplay, imageToDisplay);
} else {
// getPrimaryShape().setStereotypeDisplay(null, null);
}
}
/**
* {@inheritDoc}
*/
@Override
protected void removeSemanticListeners() {
super.removeSemanticListeners();
// remove listeners to react to the application and remove of
// stereotypes
removeListenerFilter(STEREOTYPABLE_ELEMENT);
removeListenerFilter(STEREOTYPED_ELEMENT);
}
/**
* {@inheritDoc}
*/
@Override
public Element getUMLElement() {
return (Element) resolveSemanticElement();
}
/**
* get the list of stereotype to display from the eannotation
*
* @return the list of stereotypes to display
*/
public String stereotypesToDisplay() {
String stereotypesToDisplay = StereotypeDisplayHelper.getInstance().getStereotypeTextToDisplay((View) getModel());
return stereotypesToDisplay;
}
/**
* Returns the image to be displayed for the applied stereotypes.
*
* @return the image that represents the first applied stereotype or <code>null</code> if no image has to be displayed
*/
public Image stereotypeIconToDisplay() {
String stereotypespresentationKind = AppliedStereotypeHelper.getAppliedStereotypePresentationKind((View) getModel());
if (stereotypespresentationKind == null) {
return null;
}
if (stereotypespresentationKind.equals(UMLVisualInformationPapyrusConstant.ICON_STEREOTYPE_PRESENTATION) || stereotypespresentationKind.equals(UMLVisualInformationPapyrusConstant.TEXT_ICON_STEREOTYPE_PRESENTATION)) {
// retrieve the first stereotype in the list of displayed stereotype
String stereotypesToDisplay = AppliedStereotypeHelper.getStereotypesToDisplay((View) getModel());
StringTokenizer tokenizer = new StringTokenizer(stereotypesToDisplay, ",");
if (tokenizer.hasMoreTokens()) {
String firstStereotypeName = tokenizer.nextToken();
Stereotype stereotype = getUMLElement().getAppliedStereotype(firstStereotypeName);
return Activator.getIconElement(getUMLElement(), stereotype, false);
}
}
return null;
}
/**
* {@inheritDoc}
*/
@Override
protected void setLineWidth(int width) {
getPrimaryShape().setLineWidth(width < 0 ? 1 : width);
}
}
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