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/*******************************************************************************
* Copyright (c) 2010 protos software gmbh (http://www.protos.de).
* 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:
* Thomas Schuetz and Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.core.ui.contentassist;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.emf.common.util.BasicEList;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.etrice.core.common.base.AnnotationType;
import org.eclipse.etrice.core.common.ui.contentassist.ImportModelAssist;
import org.eclipse.etrice.core.fsm.fSM.DetailCode;
import org.eclipse.etrice.core.naming.RoomNameProvider;
import org.eclipse.etrice.core.room.ActorClass;
import org.eclipse.etrice.core.room.ActorContainerClass;
import org.eclipse.etrice.core.room.ActorContainerRef;
import org.eclipse.etrice.core.room.ActorInstanceMapping;
import org.eclipse.etrice.core.room.ActorRef;
import org.eclipse.etrice.core.room.DataClass;
import org.eclipse.etrice.core.room.Operation;
import org.eclipse.etrice.core.room.RefPath;
import org.eclipse.etrice.core.room.RoomAnnotationTargetEnum;
import org.eclipse.etrice.core.room.RoomPackage;
import org.eclipse.etrice.core.room.StandardOperation;
import org.eclipse.etrice.core.room.util.RoomHelpers;
import org.eclipse.etrice.core.ui.util.UIExpressionUtil;
import org.eclipse.etrice.expressions.detailcode.IDetailExpressionProvider;
import org.eclipse.etrice.expressions.ui.contentassist.RoomExpressionProposalProvider;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.swt.graphics.Image;
import org.eclipse.xtext.Assignment;
import org.eclipse.xtext.RuleCall;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext;
import org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
import com.google.inject.Inject;
/**
* see http://www.eclipse.org/Xtext/documentation/latest/xtext.html#contentAssist on how to customize content assistant
*/
public class RoomProposalProvider extends AbstractRoomProposalProvider {
protected class FilteredProposalCreator implements Function<IEObjectDescription, ICompletionProposal> {
private IProposalFilter filter;
private final ContentAssistContext contentAssistContext;
private final String ruleName;
protected FilteredProposalCreator(IProposalFilter filter, ContentAssistContext contentAssistContext, String ruleName) {
this.filter = filter;
this.contentAssistContext = contentAssistContext;
this.ruleName = ruleName;
}
public ICompletionProposal apply(IEObjectDescription candidate) {
if (candidate == null)
return null;
ICompletionProposal result = null;
String proposal = candidate.getName().toString();
if (ruleName != null)
proposal = getValueConverter().toString(proposal, ruleName);
EObject objectOrProxy = candidate.getEObjectOrProxy();
// three new lines in code taken from org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.DefaultProposalCreator
if (!objectOrProxy.eIsProxy() && filter!=null)
if (!filter.accept(contentAssistContext, candidate))
return null;
StyledString displayString = getStyledDisplayString(objectOrProxy, candidate.getQualifiedName().toString(), candidate.getName().toString());
Image image = getImage(objectOrProxy);
result = createCompletionProposal(proposal, displayString, image, contentAssistContext);
getPriorityHelper().adjustCrossReferencePriority(result, contentAssistContext.getPrefix());
return result;
}
}
protected class ActorRefFilter implements IProposalFilter {
@Override
public boolean accept(ContentAssistContext context, IEObjectDescription candidate) {
if (!(context.getCurrentModel() instanceof ActorRef))
// unexpected call??
return false;
ActorRef ar = (ActorRef) context.getCurrentModel();
if (!(ar.eContainer() instanceof ActorClass))
// can not filter due to lack of information
return true;
ActorClass ac = (ActorClass) ar.eContainer();
EObject objectOrProxy = candidate.getEObjectOrProxy();
if (objectOrProxy instanceof ActorClass) {
ActorClass referenced = (ActorClass) objectOrProxy;
return !roomHelpers.isReferencing(referenced, ac);
}
return false;
}
}
@Inject
protected RoomHelpers roomHelpers;
@Inject
protected RoomNameProvider roomNameProvider;
protected Function<IEObjectDescription, ICompletionProposal> getProposalFactory(String ruleName, ContentAssistContext contentAssistContext) {
if (contentAssistContext!=null && contentAssistContext.getCurrentModel().eClass()==RoomPackage.eINSTANCE.getActorRef())
return new FilteredProposalCreator(new ActorRefFilter(), contentAssistContext, ruleName);
// delegate to default
return super.getProposalFactory(ruleName, contentAssistContext);
}
@Override
public void completeImport_ImportURI(EObject model, Assignment assignment,
final ContentAssistContext context,
final ICompletionProposalAcceptor acceptor) {
ImportModelAssist.addPaths(this, context, acceptor, ".room");
}
@Override
public void completeActorInstanceMapping_Path(EObject model,
Assignment assignment, ContentAssistContext context,
ICompletionProposalAcceptor acceptor) {
super.completeActorInstanceMapping_Path(model, assignment, context, acceptor);
List<ActorRef> instances = collectInstances(((ActorInstanceMapping) model));
for (ActorRef instance : instances)
acceptor.accept(createCompletionProposal(instance.getName(), context));
}
@Override
public void completeRefPath_Refs(EObject model, Assignment assignment,
ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
super.completeRefPath_Refs(model, assignment, context, acceptor);
if (model instanceof ActorInstanceMapping) {
completeActorInstanceMapping_Path(model, assignment, context, acceptor);
return;
}
RefPath path = ((RefPath) model);
if (path.eContainer() instanceof ActorInstanceMapping) {
List<ActorRef> instances = collectInstances((ActorInstanceMapping) path.eContainer());
for (ActorRef instance : instances)
acceptor.accept(createCompletionProposal(instance.getName(),
context));
}
}
@Override
public void complete_AnnotationTargetType(EObject model, org.eclipse.xtext.RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
EList<String> existingTargets = new BasicEList<String>();
if(model instanceof AnnotationType) {
existingTargets.addAll(((AnnotationType)model).getTargets());
}
for(RoomAnnotationTargetEnum t : RoomAnnotationTargetEnum.values()) {
String targetName = t.getLiteral();
if(!existingTargets.isEmpty() && !existingTargets.contains(targetName)) {
acceptor.accept(createCompletionProposal(targetName, context));
}
}
}
@Override
public void complete_ID(EObject model, RuleCall ruleCall, ContentAssistContext context,
ICompletionProposalAcceptor acceptor) {
if(model instanceof StandardOperation){
StandardOperation op = (StandardOperation) model;
List<? extends Operation> superOps = Lists.newArrayList();
EObject roomClass = roomHelpers.getRoomClass(op);
if(roomClass instanceof ActorClass && ((ActorClass)roomClass).getActorBase() != null)
superOps = roomHelpers.getLatestOperations(((ActorClass)roomClass).getActorBase());
else if(roomClass instanceof DataClass && ((DataClass)roomClass).getBase() != null)
superOps = roomHelpers.getLatestOperations(((DataClass)roomClass).getBase());
for(Operation superOp : superOps){
String signature = roomNameProvider.getSignature(superOp);
String superClassName = roomHelpers.getRoomClass(superOp).getName();
acceptor.accept(createCompletionProposal(signature, signature+" - "+superClassName, getImage(superOp), context));
}
}
super.complete_ID(model, ruleCall, context, acceptor);
}
private List<ActorRef> collectInstances(ActorInstanceMapping aim) {
List<ActorRef> refs = new ArrayList<ActorRef>();
ActorContainerClass root = roomHelpers.getParentContainer(aim);
if (root != null) {
RefPath path = aim.getPath();
if(path != null && !path.getRefs().isEmpty() && path.getRefs().get(0) != null &&
path.getRefs().get(0).getRef() != null)
root = roomHelpers.getActorContainerClass(aim);
if (root != null) {
for (ActorContainerRef ref : roomHelpers.getRefs(root, true)) {
if (ref instanceof ActorRef) {
ActorRef aRef = (ActorRef) ref;
if (aRef.getMultiplicity() == 1)
refs.add((ActorRef) ref);
}
}
}
}
return refs;
}
@Inject
RoomExpressionProposalProvider expressionProposalAdapter;
@Override
public void complete_CC_STRING(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
String text = context.getCurrentNode().getText();
int localOffset = context.getOffset() - context.getCurrentNode().getOffset();
int globalOffset = context.getOffset();
if (context.getCurrentNode().getSemanticElement() instanceof DetailCode) {
IDetailExpressionProvider exprPovider = UIExpressionUtil.selectExpressionProvider(model);
for(ICompletionProposal proposal : expressionProposalAdapter.createProposals(exprPovider, text, localOffset, globalOffset))
acceptor.accept(proposal);
}
super.complete_CC_STRING(model, ruleCall, context, acceptor);
}
}
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