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/*****************************************************************************
* Copyright (c) 2010-2011 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:
*
* Arthur daussy (Atos) arthur.daussy@atos.net - Bug 361643: [StateMachine Diagram] Display of Guards doesn't work.
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.statemachine.custom.parsers;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParser;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParserEditStatus;
import org.eclipse.gmf.runtime.common.ui.services.parser.ParserEditStatus;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.emf.ui.services.parser.ISemanticParser;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.emf.utils.ServiceUtilsForEObject;
import org.eclipse.papyrus.uml.tools.utils.OpaqueExpressionUtil;
import org.eclipse.papyrus.uml.tools.utils.ValueSpecificationUtil;
import org.eclipse.uml2.uml.Behavior;
import org.eclipse.uml2.uml.CallEvent;
import org.eclipse.uml2.uml.ChangeEvent;
import org.eclipse.uml2.uml.Constraint;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Event;
import org.eclipse.uml2.uml.NamedElement;
import org.eclipse.uml2.uml.OpaqueBehavior;
import org.eclipse.uml2.uml.OpaqueExpression;
import org.eclipse.uml2.uml.SignalEvent;
import org.eclipse.uml2.uml.TimeEvent;
import org.eclipse.uml2.uml.TimeExpression;
import org.eclipse.uml2.uml.Transition;
import org.eclipse.uml2.uml.Trigger;
import org.eclipse.uml2.uml.UMLFactory;
import org.eclipse.uml2.uml.ValueSpecification;
public class TransitionPropertiesParser implements IParser, ISemanticParser {
private static final String ONE_SPACE_STRING = " "; //$NON-NLS-1$
protected Constraint guardConstraint = null;
private static String EMPTY_STRING = ""; //$NON-NLS-1$
public IContentAssistProcessor getCompletionProcessor(IAdaptable element) {
return null;
}
public String getEditString(IAdaptable element, int flags) {
return EMPTY_STRING;
}
public ICommand getParseCommand(IAdaptable element, String newString, int flags) {
final Transition transition = ((Transition)((EObjectAdapter)element).getRealObject());
final String result = newString;
final TransactionalEditingDomain editingDomain;
try {
editingDomain = ServiceUtilsForEObject.getInstance().getTransactionalEditingDomain(transition);
} catch (ServiceException ex) {
return null;
}
AbstractTransactionalCommand tc = new AbstractTransactionalCommand(editingDomain, "Edit Transition Properties", (List)null) { //$NON-NLS-1$
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
SafeRunnable.run(new SafeRunnable() {
public void run() {
RecordingCommand rc = new RecordingCommand(getEditingDomain()) {
@Override
protected void doExecute() {
// 1. Search, if a constraint with the same name exists
EList<Element> elements = (transition.getModel()).allOwnedElements();
Iterator<Element> modelElement = elements.iterator();
while(modelElement.hasNext()) {
Element pElement = modelElement.next();
if(pElement instanceof Constraint && (result.equals(((NamedElement)pElement).getName()))) {
guardConstraint = (Constraint)pElement;
transition.setGuard(guardConstraint);
}
}
// 2. no constraint exists already
if(guardConstraint == null) {
guardConstraint = UMLFactory.eINSTANCE.createConstraint();
guardConstraint.setName(result);
guardConstraint.setContext(transition.getNamespace());
transition.setGuard(guardConstraint);
}
// transition.setName(result);
}
};
getEditingDomain().getCommandStack().execute(rc);
}
});
return CommandResult.newOKCommandResult();
}
};
return tc;
}
public String getPrintString(IAdaptable element, int flags) {
String label = getValueString(element, flags);
if(label == null || label.length() == 0) {
label = ONE_SPACE_STRING;
}
return label;
}
public boolean isAffectingEvent(Object event, int flags) {
if(event instanceof Notification) {
int notificationType = ((Notification)event).getEventType();
if(Notification.SET == notificationType) {
if(((Notification)event).getNewValue() instanceof Constraint) {
guardConstraint = (Constraint)((Notification)event).getNewValue();
}
return true;
}
}
return false;
}
/**
* Get the unformatted registered string value which shall be displayed
*/
protected String getValueString(IAdaptable element, int flags) {
Object obj = element.getAdapter(EObject.class);
if(obj instanceof Transition) {
Transition trans = (Transition)obj;
StringBuilder result = new StringBuilder();
String textForTrigger = getTextForTrigger(trans);
if(textForTrigger != null && !EMPTY_STRING.equals(textForTrigger)) {
result.append(textForTrigger).append(ONE_SPACE_STRING);
}
result.append(getTextForGuard(trans));
String textForEffect = getTextForEffect(trans);
if(textForEffect != null && !EMPTY_STRING.equals(textForEffect)) {
result.append("/\n").append(textForEffect); //$NON-NLS-1$
}
return result.toString();
}
return EMPTY_STRING;
}
/**
* get the text concerning guard
*
* @param trans
* @return
*/
protected String getTextForGuard(Transition trans) {
Constraint valueSpec = trans.getGuard();
if(valueSpec != null) {
String value = ValueSpecificationUtil.getConstraintnValue(valueSpec);
if(value != null) {
return String.format("[%s]", value); //$NON-NLS-1$
}
}
return EMPTY_STRING;
}
/**
* get the text concerning Effects
*
* @param trans
* @return
*/
protected String getTextForEffect(Transition trans) {
StringBuilder result = new StringBuilder();
Behavior effect = trans.getEffect();
if(effect != null) {
EClass eClass = effect.eClass();
if(effect instanceof OpaqueBehavior) {
OpaqueBehavior ob = (OpaqueBehavior)effect;
if(ob.getBodies().size() > 0) {
// return body of behavior (only handle case of a single body)
result.append(ob.getBodies().get(0));
return result.toString();
}
}
if(eClass != null) {
result.append(eClass.getName()).append(": ").append(effect.getName()); //$NON-NLS-1$
}
}
return result.toString();
}
/**
* Get the text concerning Trigger
*
* @param trans
* @return
*/
protected String getTextForTrigger(Transition trans) {
StringBuilder result = new StringBuilder();
boolean isFirstTrigger = true;
for(Trigger t : trans.getTriggers()) {
if(t != null) {
if(!isFirstTrigger) {
result.append(", "); //$NON-NLS-1$
} else {
isFirstTrigger = false;
}
Event e = t.getEvent();
if(e instanceof CallEvent) {
if(((CallEvent)e).getOperation() != null) {
result.append(((CallEvent)e).getOperation().getName());
} else {
result.append(((CallEvent)e).getName());
}
} else if(e instanceof SignalEvent) {
if(((SignalEvent)e).getSignal() != null) {
result.append(((SignalEvent)e).getSignal().getName());
} else {
result.append(((SignalEvent)e).getName());
}
} else if(e instanceof ChangeEvent) {
ValueSpecification vs = ((ChangeEvent) e).getChangeExpression();
String value;
if (vs instanceof OpaqueExpression) {
value = "\"" + retrieveBody((OpaqueExpression) vs) + "\""; //$NON-NLS-1$ //$NON-NLS-2$
}
else {
value = vs.stringValue();
}
result.append(value);
} else if(e instanceof TimeEvent) {
TimeEvent timeEvent= (TimeEvent) e;
//absRelPrefix
result.append(timeEvent.isRelative() ? "after " : "at "); //$NON-NLS-1$ //$NON-NLS-2$
// body
TimeExpression te = timeEvent.getWhen();
String value;
if (te != null) {
ValueSpecification vs = te.getExpr();
if (vs instanceof OpaqueExpression) {
value = "\"" + retrieveBody((OpaqueExpression) vs) + "\""; //$NON-NLS-1$ //$NON-NLS-2$
}
else {
value = vs.stringValue();
}
}
else {
value = "undefined"; //$NON-NLS-1$
}
result.append(value);
} else { // any receive event
result.append("all"); //$NON-NLS-1$
}
}
}
return result.toString();
}
public IParserEditStatus isValidEditString(IAdaptable element, String editString) {
return new ParserEditStatus(org.eclipse.papyrus.uml.diagram.statemachine.part.UMLDiagramEditorPlugin.ID, IParserEditStatus.OK, ""); //$NON-NLS-1$
}
public List getSemanticElementsBeingParsed(EObject element) {
Element umlElement = (Element)element;
List<EObject> result = new LinkedList<EObject>();
if(umlElement instanceof Transition) {
Transition trans = (Transition)umlElement;
if(trans != null) {
result.add(trans);
/**
* Listen constraint modification
*/
Constraint constraint = trans.getGuard();
if(constraint != null) {
result.add(constraint);
ValueSpecification specification = constraint.getSpecification();
if(specification != null) {
result.add(specification);
}
}
/**
* Listen trigger modification
*/
for(Trigger t : trans.getTriggers()) {
if(t != null) {
result.add(t);
}
}
/**
* Listen effect modification
*/
Behavior effect = trans.getEffect();
if(effect != null) {
result.add(effect);
}
}
// if(constraint.getSpecification() != null) {
// ValueSpecification value = constraint.getSpecification();
// result.add(value);
// }
}
return result;
}
public boolean areSemanticElementsAffected(EObject listener, Object notification) {
return true;
}
/**
* Return the body of an expression. Retrieve the "Natural Language" body with priority,
* i.e. return this body if it exists, otherwise return the first body.
*
* @param exp an opaque expression
* @return the associated body
*/
private static String retrieveBody(OpaqueExpression exp) {
String body = OpaqueExpressionUtil.getBodyForLanguage(exp, "Natural Language"); //$NON-NLS-1$
if (body.equals(EMPTY_STRING)) {
body = OpaqueExpressionUtil.getBodyForLanguage(exp, null);
}
return body;
}
}
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