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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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.customization.properties.generation.generators;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EEnum;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.m2m.qvt.oml.BasicModelExtent;
import org.eclipse.m2m.qvt.oml.ModelExtent;
import org.eclipse.papyrus.customization.properties.generation.Activator;
import org.eclipse.papyrus.customization.properties.generation.messages.Messages;
import org.eclipse.papyrus.customization.properties.generation.wizard.widget.FileChooser;
import org.eclipse.papyrus.views.properties.contexts.DataContextElement;
import org.eclipse.papyrus.views.properties.contexts.Property;
import org.eclipse.papyrus.views.properties.root.PropertiesRoot;
import org.eclipse.papyrus.views.properties.runtime.ConfigurationManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
/**
* An IGenerator to create Property view contexts from an Ecore metamodel
* FIXME : The generator doesn't seem to keep the Metaclass inheritance
*
* @author Camille Letavernier
*/
public class EcoreGenerator extends AbstractQVTGenerator {
private FileChooser sourceFileChooser;
private EPackage ecorePackage;
public void createControls(Composite parent) {
Composite root = new Composite(parent, SWT.NONE);
GridLayout layout = new GridLayout(2, false);
layout.marginWidth = 0;
root.setLayout(layout);
Label sourceLabel = new Label(root, SWT.NONE);
sourceLabel.setText(Messages.EcoreGenerator_source);
GridData data = new GridData();
data.widthHint = 100;
sourceLabel.setLayoutData(data);
sourceFileChooser = new FileChooser(root, false);
sourceFileChooser.setFilterExtensions(new String[]{ "ecore" }); //$NON-NLS-1$
sourceFileChooser.addListener(this);
}
public String getDescription() {
return Messages.EcoreGenerator_ecoreGeneratorDescription;
}
public boolean isReady() {
return sourceFileChooser.getFilePath() != null;
}
public String getName() {
return Messages.EcoreGenerator_ecoreGeneratorName;
}
public boolean isSelectedSingle(Property property) {
EStructuralFeature feature = getFeature(property);
if(feature == null) {
return false;
}
if(feature.isDerived()) {
return false;
}
if(!feature.isChangeable()) {
return false;
}
if(feature instanceof EReference) {
EReference reference = (EReference)feature;
if(reference.isContainer() || reference.isContainment()) {
return false;
}
}
return true;
}
/**
* Retrieve the EStructuralFeature corresponding to the given property
*
* @param property
* @return
* The EStructuralFeature corresponding to the given property
*/
protected EStructuralFeature getFeature(Property property) {
List<String> path = getPath(property);
path.remove(0); //Root = EPackage
EPackage currentPackage = ecorePackage;
EClassifier classifier = findClassifier(path, currentPackage);
if(classifier == null) {
return null;
}
if(!(classifier instanceof EClass)) {
return null;
}
EClass eClass = (EClass)classifier;
return eClass.getEStructuralFeature(property.getName());
}
/**
* Retrieve the Classifier corresponding to the given path, in the given EPackage
*
* @param path
* The list of package and subpackages names, and the classifier name, i.e.
* the list of segments in the classifier's qualified name
* @param source
* The root EPackage in which the classifier should be retrieved
* @return
* The corresponding EClassifier, or null if it couldn't be retrieved
*/
protected EClassifier findClassifier(List<String> path, EPackage source) {
String qualifier = path.get(0);
EClassifier classifier = source.getEClassifier(qualifier);
if(classifier == null) {
source = findSubPackage(source, qualifier);
if(source == null) {
return null;
}
path.remove(0);
return findClassifier(path, source);
} else {
return classifier;
}
}
/**
* Retrieve the subpackage corresponding to the given packageName, in the given
* package
*
* @param currentPackage
* The EPackage in which the subpackage should be found
* @param packageName
* The name of the EPackage to find
* @return
* The corresponding EPackage, or null if it couldn't be found
*/
protected EPackage findSubPackage(EPackage currentPackage, String packageName) {
for(EPackage pack : currentPackage.getESubpackages()) {
if(pack.getName().equals(packageName)) {
return pack;
}
}
return null;
}
private List<String> getPath(Property property) {
List<String> result = getPath(property.getContextElement());
return result;
}
private List<String> getPath(DataContextElement element) {
List<String> result;
if(element.getPackage() == null) {
result = new LinkedList<String>();
} else {
result = getPath(element.getPackage());
}
result.add(element.getName());
return result;
}
public boolean isSelectedMultiple(Property property) {
if(!isSelectedSingle(property)) {
return false;
}
EStructuralFeature feature = getFeature(property);
Set<String> validDataTypes = new HashSet<String>(Arrays.asList(new String[]{ "int", "boolean", "float", "double" })); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
if(feature.getEType() instanceof EDataType) {
if(validDataTypes.contains(((EDataType)feature.getEType()).getInstanceTypeName())) {
return true;
}
}
if(feature.getEType() instanceof EEnum) {
return true;
}
return false;
}
public boolean isSelectedSingle(Property property, DataContextElement element) {
return isSelectedSingle(property);
}
public boolean isSelectedMultiple(Property property, DataContextElement element) {
return isSelectedMultiple(property);
}
@Override
protected URI getTransformationURI() {
return URI.createPlatformPluginURI(Activator.PLUGIN_ID + "/transforms/ecore2datacontext.qvto", true); //$NON-NLS-1$
}
@Override
protected List<ModelExtent> getModelExtents() {
try {
URI packageURI = URI.createPlatformResourceURI(sourceFileChooser.getFilePath(), true);
ecorePackage = (EPackage)loadEMFModel(packageURI);
ModelExtent inPackage = new BasicModelExtent(Collections.singletonList(ecorePackage));
PropertiesRoot root = ConfigurationManager.getInstance().getPropertiesRoot();
ModelExtent inRoot = new BasicModelExtent(Collections.singletonList(root));
LinkedList<ModelExtent> result = new LinkedList<ModelExtent>();
result.add(inPackage);
result.add(inRoot);
result.add(getOutContextExtent());
return result;
} catch (Exception ex) {
return null;
}
}
}
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