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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.model.xwt.resource;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.util.BasicDiagnostic;
import org.eclipse.emf.common.util.BasicEList;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.impl.ResourceImpl;
import org.eclipse.gmt.modisco.xml.Root;
import org.eclipse.gmt.modisco.xml.resource.GenericXMLResourceImpl;
import org.eclipse.m2m.qvt.oml.BasicModelExtent;
import org.eclipse.m2m.qvt.oml.ExecutionContextImpl;
import org.eclipse.m2m.qvt.oml.ExecutionDiagnostic;
import org.eclipse.m2m.qvt.oml.ModelExtent;
import org.eclipse.m2m.qvt.oml.TransformationExecutor;
import org.eclipse.m2m.qvt.oml.util.Log;
import org.eclipse.papyrus.customization.properties.model.xwt.Activator;
import org.eclipse.papyrus.customization.properties.model.xwt.format.XMLFormatter;
import org.eclipse.papyrus.views.properties.contexts.Context;
import org.eclipse.papyrus.views.properties.runtime.ConfigurationManager;
import org.eclipse.papyrus.views.properties.ui.CompositeWidget;
import org.eclipse.papyrus.views.properties.ui.UiPackage;
import org.eclipse.papyrus.views.properties.util.PropertiesUtil;
/**
* A Resource for representing XWT (XML Widget Toolkit) files
* as EObjects.
* Resulting EObjects are conform to the Papyrus property view UI Metamodel :
* http://www.eclipse.org/papyrus/properties/ui/0.9
*
* The resource is based on MoDisco for reading and writing XML,
* and on QVTO to go from XML to EMF and vice-versa.
*
* @author Camille Letavernier
*
* @see UiPackage
*/
public class XWTResource extends ResourceImpl {
private GenericXMLResourceImpl xmlResource;
/**
* The "format" option.
*
* This option is a boolean, which default value is true
*/
public static final String OPTION_FORMAT = "format";
/**
*
* Constructs a new XWTResource with the given URI
*
* @param uri
* The resource's URI
*/
public XWTResource(URI uri) {
super(uri);
xmlResource = new GenericXMLResourceImpl(uri);
}
@Override
protected void doLoad(InputStream inputStream, Map<?, ?> options) throws IOException {
xmlResource.load(inputStream, options);
Root root = (Root)xmlResource.getContents().get(0);
try {
CompositeWidget widget = xmlToUISection(root);
getContents().add(widget);
} catch (Exception ex) {
Activator.log.error(ex);
}
}
@Override
public void save(Map<?, ?> options) throws IOException {
if(options == null || options.isEmpty()) {
Map<String, String> optionsMap = new HashMap<String, String>();
optionsMap.put(OPTION_SAVE_ONLY_IF_CHANGED, OPTION_SAVE_ONLY_IF_CHANGED_MEMORY_BUFFER);
super.save(optionsMap);
} else {
super.save(options);
}
Object formatValue = options.get(OPTION_FORMAT);
if(formatValue == null || formatValue == Boolean.TRUE) {
if(uri.isPlatform()) {
IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(uri.toPlatformString(true)));
XMLFormatter.format(file);
}
}
}
@Override
protected void doSave(OutputStream outputStream, Map<?, ?> options) throws IOException {
try {
if(getContents().isEmpty()) {
Activator.log.warn("Cannot save an Empty XWT resource : " + getURI());
return;
}
Root root = uiSectionToXML((CompositeWidget)getContents().get(0));
xmlResource.getContents().clear();
xmlResource.getContents().add(root);
xmlResource.save(outputStream, options);
} catch (IOException ex) {
Activator.log.error(ex);
throw ex;
} catch (Exception ex) {
Activator.log.error(ex);
}
}
private Collection<Context> findContexts() {
Set<Context> rootContexts = new HashSet<Context>();
if(resourceSet == null) {
return null;
}
for(Resource resource : resourceSet.getResources()) {
if(!resource.getContents().isEmpty() && resource.getContents().get(0) instanceof Context) {
Context context = (Context)resource.getContents().get(0);
rootContexts.add(context);
}
}
Set<Context> allContexts = new HashSet<Context>();
for(Context context : rootContexts) {
allContexts.addAll(PropertiesUtil.getDependencies(context));
}
return allContexts;
}
private CompositeWidget xmlToUISection(Root genericXMLRoot) {
URI transformationURI = URI.createPlatformPluginURI(Activator.PLUGIN_ID + "/Transformation/XMLToUI.qvto", true); //$NON-NLS-1$
TransformationExecutor executor = new TransformationExecutor(transformationURI);
List<Context> contexts = new LinkedList<Context>(findContexts());
ModelExtent inXml = getModelExtent(genericXMLRoot);
ModelExtent inRoot = getModelExtent(ConfigurationManager.instance.getPropertiesRoot());
ModelExtent inContexts = new BasicModelExtent(contexts);
ModelExtent outUI = new BasicModelExtent();
ExecutionContextImpl context = new ExecutionContextImpl();
context.setLog(getLogger());
context.setConfigProperty("keepModeling", true); //$NON-NLS-1$
ExecutionDiagnostic result = executor.execute(context, inXml, inRoot, inContexts, outUI);
if(result.getSeverity() == org.eclipse.emf.common.util.Diagnostic.OK) {
List<EObject> outObjects = outUI.getContents();
Object objectResult = outObjects.get(0);
if(!(objectResult instanceof CompositeWidget)) {
return null;
}
return (CompositeWidget)outObjects.get(0);
} else {
IStatus status = BasicDiagnostic.toIStatus(result);
Activator.getDefault().getLog().log(status);
}
return null;
}
private Log getLogger() {
return new Log() {
public void log(int level, String message) {
Activator.getDefault().getLog().log(new Status(level, Activator.PLUGIN_ID, message));
}
public void log(int level, String message, Object param) {
log(level, message);
}
public void log(String message) {
log(IStatus.INFO, message);
}
public void log(String message, Object param) {
log(message);
}
};
}
private Root uiSectionToXML(CompositeWidget widget) {
URI transformationURI = URI.createPlatformPluginURI(Activator.PLUGIN_ID + "/Transformation/UIToXML.qvto", true); //$NON-NLS-1$
TransformationExecutor executor = new TransformationExecutor(transformationURI);
ModelExtent inWidget = getModelExtent(widget);
ModelExtent outXML = new BasicModelExtent();
ExecutionContextImpl context = new ExecutionContextImpl();
context.setConfigProperty("keepModeling", true); //$NON-NLS-1$
context.setLog(getLogger());
ExecutionDiagnostic result = executor.execute(context, inWidget, outXML);
if(result.getSeverity() == org.eclipse.emf.common.util.Diagnostic.OK) {
List<EObject> outObjects = outXML.getContents();
return (Root)outObjects.get(0);
} else {
IStatus status = BasicDiagnostic.toIStatus(result);
Activator.getDefault().getLog().log(status);
}
return null;
}
private ModelExtent getModelExtent(EObject source) {
if(source == null) {
return new BasicModelExtent();
}
EList<EObject> objects = new BasicEList<EObject>();
objects.add(source);
ModelExtent extent = new BasicModelExtent(objects);
return extent;
}
}
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