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/*******************************************************************************
* Copyright (c) 2011 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:
* Juergen Haug (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.core.ui.util
import org.eclipse.emf.ecore.EObject
import org.eclipse.etrice.core.fsm.fSM.Guard
import org.eclipse.etrice.core.fsm.fSM.StateGraphItem
import org.eclipse.etrice.core.fsm.fSM.TransitionBase
import org.eclipse.etrice.core.genmodel.fsm.FsmGenExtensions
import org.eclipse.etrice.core.genmodel.fsm.fsmgen.GraphContainer
import org.eclipse.etrice.core.room.ActorClass
import org.eclipse.etrice.expressions.detailcode.DefaultDetailExpressionProvider
import org.eclipse.etrice.expressions.detailcode.DetailExpressionAssistParser
import org.eclipse.etrice.expressions.detailcode.GuardDetailExpressionProvider
import org.eclipse.etrice.expressions.detailcode.IDetailExpressionProvider
import org.eclipse.etrice.expressions.detailcode.IDetailExpressionProvider.ExpressionFeature
import org.eclipse.jface.text.Document
import org.eclipse.xtext.nodemodel.ILeafNode
import org.eclipse.etrice.core.room.MessageData
import org.eclipse.etrice.core.genmodel.fsm.ExtendedFsmGenBuilder
import java.util.Map
import org.eclipse.etrice.core.fsm.fSM.ModelComponent
import org.eclipse.etrice.core.ui.RoomUiModule
import static org.eclipse.xtext.EcoreUtil2.getContainerOfType
class UIExpressionUtil {
static class GenModelAccess {
Map<ModelComponent, GraphContainer> cache = newHashMap
def public GraphContainer get(ModelComponent mc) {
if(!cache.containsKey(mc)) {
val builder = new ExtendedFsmGenBuilder(RoomUiModule.injector);
val gc = builder.createTransformedModel(mc)
builder.withCommonData(gc)
cache.put(mc, gc)
}
return cache.get(mc)
}
}
static def IDetailExpressionProvider selectExpressionProvider(EObject it, GenModelAccess genModelAccess) {
val ac = getContainerOfType(it, ActorClass)
val exprProvider = switch it {
case getContainerOfType(it, Guard) !== null && ac !== null: new GuardDetailExpressionProvider(ac)
case getContainerOfType(it, StateGraphItem) !== null && ac !== null: new DefaultDetailExpressionProvider(ac)
default: new IDetailExpressionProvider.EmptyDetailExpressionProvider
}
if(exprProvider instanceof GuardDetailExpressionProvider) {
val transition = getContainerOfType(it, TransitionBase)
if(transition !== null) {
val commonData = FsmGenExtensions.getLinkFor(genModelAccess.get(ac), transition)?.commonData
if(commonData instanceof MessageData)
exprProvider.transitionEventData = commonData
}
}
return exprProvider
}
static def IDetailExpressionProvider selectExpressionProvider(EObject it) {
return selectExpressionProvider(it, new GenModelAccess)
}
static def ExpressionFeature findAtOffset(ILeafNode leafNode, int offset) {
// work in progress - show eObject for detail code
val exprProvider = UIExpressionUtil.selectExpressionProvider(leafNode.semanticElement)
// TODO explicit support for hover info in DetailExpressionAssistParser
val text = leafNode.text
val completeExprOffset = {
var exprEndOfsset = offset - leafNode.offset
while(text.length > exprEndOfsset && Character.isJavaIdentifierPart(text.charAt(exprEndOfsset)))
exprEndOfsset += 1
exprEndOfsset
}
val parser = new DetailExpressionAssistParser(new Document(leafNode.text), completeExprOffset, exprProvider)
val word = parser.computeIdentifierPrefix(completeExprOffset)
switch contextFeature : parser.resolveLatestCompleted {
case null: exprProvider.initialFeatures.findFirst[id == word]
default: exprProvider.getContextFeatures(contextFeature).findFirst[id == word]
}
}
}
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