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/*****************************************************************************
* Copyright (c) 2011 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.properties.modelelement;
import org.eclipse.core.databinding.observable.IObservable;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.emf.databinding.EMFProperties;
import org.eclipse.emf.databinding.FeaturePath;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.eclipse.gmf.runtime.notation.Style;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.emf.utils.ServiceUtilsForEObject;
import org.eclipse.papyrus.infra.gmfdiag.common.utils.DiagramUtils;
import org.eclipse.papyrus.infra.gmfdiag.properties.Activator;
import org.eclipse.papyrus.infra.gmfdiag.properties.databinding.GradientObservableValue;
import org.eclipse.papyrus.infra.gmfdiag.properties.provider.ModelContentProvider;
import org.eclipse.papyrus.infra.gmfdiag.properties.util.LegacyOwnerObservable;
import org.eclipse.papyrus.infra.services.labelprovider.service.LabelProviderService;
import org.eclipse.papyrus.infra.viewpoints.policy.PolicyChecker;
import org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype;
import org.eclipse.papyrus.infra.viewpoints.style.StylePackage;
import org.eclipse.papyrus.infra.widgets.providers.IStaticContentProvider;
import org.eclipse.papyrus.uml.tools.databinding.PapyrusObservableList;
import org.eclipse.papyrus.uml.tools.databinding.PapyrusObservableValue;
import org.eclipse.papyrus.views.properties.modelelement.EMFModelElement;
import org.eclipse.swt.graphics.Image;
/**
* A ModelElement to represent an element of the GMF Notation metamodel
*
* @author Camille Letavernier
*
*/
public class GMFModelElement extends EMFModelElement {
/**
*
* Constructor.
*
* @param source
* The source element (from the Notation metamodel)
*/
public GMFModelElement(EObject source) {
super(source);
}
/**
*
* Constructor.
*
* @param source
* The source element (from the Notation metamodel)
* @param domain
* The editing domain on which the commands will be executed.
* May be null
*/
public GMFModelElement(EObject source, EditingDomain domain) {
super(source, domain);
}
@Override
protected boolean isFeatureEditable(String propertyPath) {
if (propertyPath.endsWith("owner")) {
return true;
}
return super.isFeatureEditable(propertyPath);
}
@Override
protected IObservable doGetObservable(String propertyPath) {
if (propertyPath.endsWith("owner")) {
Diagram diagram = (Diagram)source;
Style style = diagram.getStyle(StylePackage.Literals.PAPYRUS_VIEW_STYLE);
if (style != null)
return new PapyrusObservableValue(style, StylePackage.Literals.PAPYRUS_VIEW_STYLE__OWNER, domain);
return new LegacyOwnerObservable(diagram, StylePackage.Literals.PAPYRUS_VIEW_STYLE__OWNER, domain);
} else if (propertyPath.endsWith("prototype")) {
Diagram diagram = (Diagram)source;
Style style = diagram.getStyle(StylePackage.Literals.PAPYRUS_VIEW_STYLE);
if (style != null)
return new PapyrusObservableValue(style, StylePackage.Literals.PAPYRUS_VIEW_STYLE__CONFIGURATION, domain);
return new LegacyOwnerObservable(diagram, StylePackage.Literals.PAPYRUS_VIEW_STYLE__CONFIGURATION, domain);
}
FeaturePath featurePath = getFeaturePath(propertyPath);
EStructuralFeature feature = getFeature(propertyPath);
if(feature == null) {
return null;
}
if(feature.getEType() == NotationPackage.eINSTANCE.getGradientData()) {
return new GradientObservableValue(source, feature, domain);
}
if(feature.getUpperBound() != 1) {
IObservableList list = domain == null ? EMFProperties.list(featurePath).observe(source) : new PapyrusObservableList(EMFProperties.list(featurePath).observe(source), domain, getSource(featurePath), feature);
return list;
}
IObservableValue value = domain == null ? EMFProperties.value(featurePath).observe(source) : new PapyrusObservableValue(getSource(featurePath), feature, domain);
return value;
}
@Override
public ILabelProvider getLabelProvider(String propertyPath) {
if (propertyPath.endsWith("prototype")) {
return new ILabelProvider() {
public void addListener(ILabelProviderListener listener) { }
public void removeListener(ILabelProviderListener listener) { }
public void dispose() { }
public boolean isLabelProperty(Object element, String property) { return false; }
public Image getImage(Object element) {
ViewPrototype proto = DiagramUtils.getPrototype((Diagram)source);
return proto.getIcon();
}
public String getText(Object element) {
ViewPrototype proto = DiagramUtils.getPrototype((Diagram)source);
return proto.getQualifiedName();
}
};
}
try {
return ServiceUtilsForEObject.getInstance().getService(LabelProviderService.class, source).getLabelProvider();
} catch (ServiceException ex) {
Activator.log.error(ex);
return new LabelProvider();
}
}
/**
* @see org.eclipse.papyrus.views.properties.modelelement.EMFModelElement#getContentProvider(java.lang.String)
*/
@Override
public IStaticContentProvider getContentProvider(String propertyPath) {
if (propertyPath.endsWith("element")) {
Diagram diagram = (Diagram)source;
return new ModelContentProvider(diagram, getRoot(diagram.getElement())) {
@Override
protected boolean isValid(EObject selection, Diagram diagram, ViewPrototype prototype) {
return PolicyChecker.getCurrent().canHaveNewView(selection, DiagramUtils.getOwner(diagram), prototype);
}
};
} else if (propertyPath.endsWith("owner")) {
Diagram diagram = (Diagram) source;
return new ModelContentProvider(diagram, getRoot(diagram.getElement())) {
@Override
protected boolean isValid(EObject selection, Diagram diagram, ViewPrototype prototype) {
return PolicyChecker.getCurrent().canHaveNewView(diagram.getElement(), selection, prototype);
}
};
}
return super.getContentProvider(propertyPath);
}
/**
* Gets the root EObject from the given one
* @param obj An object
* @return The root object which is an ancestor of the given one
*/
private EObject getRoot(EObject obj) {
EObject current = obj;
EObject parent = obj.eContainer();
while (parent != null) {
current = parent;
parent = parent.eContainer();
}
return current;
}
}
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