org.eclipse.osbp.xtext.action/src/org/eclipse/osbp/xtext/action/scoping/ActionScopeProvider.xtend

/**
 *                                                                            
 *  Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  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:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 * 
 *  This copyright notice shows up in the generated Java code
 *
 */
 
package org.eclipse.osbp.xtext.action.scoping

import org.eclipse.xtext.xbase.annotations.typesystem.XbaseWithAnnotationsBatchScopeProvider
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.EReference
import org.eclipse.osbp.xtext.action.ActionDSLPackage
import org.eclipse.xtext.resource.IEObjectDescription
import org.eclipse.xtext.scoping.impl.MapBasedScope
import org.eclipse.osbp.xtext.action.ActionButton
import org.eclipse.osbp.xtext.functionlibrarydsl.FunctionLibraryGroup
import org.eclipse.xtext.resource.EObjectDescription
import org.eclipse.xtext.scoping.Scopes
import org.eclipse.osbp.xtext.messagedsl.MessageItem

class ActionScopeProvider extends XbaseWithAnnotationsBatchScopeProvider {

	override getScope(EObject context, EReference reference) {
		if (reference == ActionDSLPackage.Literals.ACTION_BUTTON__CANEXECUTE) {
			return getScope_ActionButtonCanExecute(context as ActionButton, reference)
		}
		else if (reference == ActionDSLPackage.Literals.ACTION_BUTTON__EXECUTEPARAMETER) {
			return getScope_ActionButtonExecuteParameter(context as ActionButton, reference)
		}
//		else if (reference == ActionDSLPackage.Literals._ACTION_BUTTON__MESSAGE) {
//			return getScope_ActionButtonMessage(context as ActionButton, reference)
//		}
		return super.getScope(context, reference)
	}
	
	def getScope_ActionButtonCanExecute(ActionButton context, EReference reference) {
		var parentScope = super.getScope(context, reference)
		var result = <EObject>newArrayList
		for(function : (context.group as FunctionLibraryGroup).functions) {
			if (function.params == null || function.params.size == 0) {
				var ofType = function.oftype.simpleName
				if("boolean".equals(ofType)) {
					result.add(function)
				}
			}
		}
		return Scopes::scopeFor(result, parentScope)
	}

	def getScope_ActionButtonExecuteParameter(ActionButton context, EReference reference) {
		var parentScope = super.getScope(context, reference)
		var result = <EObject>newArrayList
		for(function : (context.group as FunctionLibraryGroup).functions) {
			if (function.params == null || function.params.size == 0) {
				result.add(function)
			}
		}
		return Scopes::scopeFor(result, parentScope)
	}
	
	def getScope_ActionButtonMessage(ActionButton context, EReference reference) {
		var parentScope = super.getScope(context, reference)
		var elements = parentScope.allElements
		for (element : elements){
			var elementname = element.name
			println('''elementname: «elementname»''')
		}
		var result = <EObject>newArrayList
		var message = (context.message as MessageItem)
		var EObject eObj = message.eContainer
		if (message != null) {
			result.add(message)
		}
		return Scopes::scopeFor(result, parentScope)
	}
		
}