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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.views.properties.modelelement;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.databinding.observable.IObservable;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.papyrus.infra.widgets.creation.ReferenceValueFactory;
import org.eclipse.papyrus.infra.widgets.providers.EmptyContentProvider;
import org.eclipse.papyrus.infra.widgets.providers.IStaticContentProvider;
import org.eclipse.papyrus.views.properties.creation.PropertyEditorFactory;
/**
* Provides a default implementation for ModelElement methods applied on the
* modelElement's properties.
*
* @author Camille Letavernier
*/
public abstract class AbstractModelElement implements ModelElement {
/**
* The DataSource owning this ModelElement
*/
protected DataSource dataSource;
private final Map<String, IObservable> observables = new HashMap<String, IObservable>();
/**
* Constructor.
*/
protected AbstractModelElement() {
}
public IStaticContentProvider getContentProvider(String propertyPath) {
return EmptyContentProvider.instance;
}
public ILabelProvider getLabelProvider(String propertyPath) {
return null;
}
public boolean isOrdered(String propertyPath) {
return true;
}
public boolean isUnique(String propertyPath) {
return false;
}
public boolean isMandatory(String propertyPath) {
return false;
}
public boolean isEditable(String propertyPath) {
return true;
}
public boolean forceRefresh(String propertyPath) {
return false;
}
public void setDataSource(DataSource source) {
this.dataSource = source;
}
/**
* @see org.eclipse.papyrus.views.properties.modelelement.ModelElement#getValueFactory(java.lang.String)
*
* @param propertyPath
* @return a default factory based on the property view configuration to
* edit objects, as if they were selected in an editor
*/
public ReferenceValueFactory getValueFactory(String propertyPath) {
return new PropertyEditorFactory();
}
public Object getDefaultValue(String propertyPath) {
return null;
}
public boolean getDirectCreation(String propertyPath) {
return false;
}
public final IObservable getObservable(String propertyPath) {
if(!observables.containsKey(propertyPath)) {
IObservable observable = doGetObservable(propertyPath);
if(observable != null) {
observables.put(propertyPath, observable);
}
}
return observables.get(propertyPath);
}
/**
* Creates the IObservable for the given propertyPath
*
* @param propertyPath
* The path of the property we want to observe
* @return
* The new IObservable
*/
protected abstract IObservable doGetObservable(String propertyPath);
public void dispose() {
for(IObservable observable : observables.values()) {
observable.dispose();
}
observables.clear();
}
}
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