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/*****************************************************************************
* Copyright (c) 2010 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
*****************************************************************************/
package org.eclipse.papyrus.properties.runtime.controller;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.papyrus.properties.runtime.controller.descriptor.IBindingLabelProviderDescriptor;
import org.eclipse.swt.graphics.Image;
/**
* Controller for {@link EReference}(s) that uses a binding label provider to display references
*/
public class EMFTBindingEReferenceController extends EMFTEReferenceController {
/** identifier for this controller */
public final static String ID = "emftBindingEReferenceController";
/** editor label provider for EMF objects */
protected ILabelProvider editorLabelProvider = new BindingLabelProvider(labelProvider);
/**
* {@inheritDoc}
*/
@Override
public ILabelProvider getEditorLabelProvider() {
return editorLabelProvider;
}
/**
* {@inheritDoc}
*/
@Override
public ILabelProvider getBrowserLabelProvider() {
return editorLabelProvider;
}
/**
* Label provider which proposed binded messages if possible, otherwise relies on an other label provider
*/
public class BindingLabelProvider implements ILabelProvider {
/** label provider used by default */
protected final ILabelProvider referenceLabelProvider;
/**
* Creates a new EMFTEReferenceController.BindingLabelProvider.
*
* @param labelProvider
* the referenced label provider, which is used by default when the label provider can not bind elements
*/
public BindingLabelProvider(ILabelProvider labelProvider) {
this.referenceLabelProvider = labelProvider;
}
/**
* {@inheritDoc}
*/
public void addListener(ILabelProviderListener listener) {
}
/**
* {@inheritDoc}
*/
public void dispose() {
}
/**
* {@inheritDoc}
*/
public boolean isLabelProperty(Object element, String property) {
return false;
}
/**
* {@inheritDoc}
*/
public void removeListener(ILabelProviderListener listener) {
}
/**
* {@inheritDoc}
*/
public Image getImage(Object element) {
return referenceLabelProvider.getImage(element);
}
/**
* {@inheritDoc}
*/
public String getText(Object element) {
if(getDescriptor() instanceof IBindingLabelProviderDescriptor) {
// retrieve message to display
// the features are the features of the element referenced by the structural feature => has to compute this value
if(element instanceof EObject) {
if(((EObject)element).eIsProxy()) {
return "Proxy - " + element;
}
return ((IBindingLabelProviderDescriptor)getDescriptor()).computeBindings((EObject)element);
}
}
return referenceLabelProvider.getText(element);
}
}
}
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