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/*
* generated by Xtext 2.12.0
*/
package rba.tool.editor.ui.contentassist
import com.google.common.base.Predicate
import com.google.common.base.Predicates
import com.google.inject.Inject
import org.apache.log4j.Logger
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.util.EcoreUtil
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.CrossReference
import org.eclipse.xtext.Keyword
import org.eclipse.xtext.RuleCall
import org.eclipse.xtext.conversion.ValueConverterException
import org.eclipse.xtext.resource.IEObjectDescription
import org.eclipse.xtext.scoping.IScope
import org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.DefaultProposalCreator
import org.eclipse.xtext.ui.editor.contentassist.ConfigurableCompletionProposal
import org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext
import org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor
import rba.core.Content
import rba.core.LambdaExpression
import rba.core.RBACorePackage
import rba.core.Variable
import rba.sound.SoundContent
import rba.sound.SoundContentSet
import rba.sound.Zone
import rba.sound.ZoneSet
import rba.tool.editor.resource.RBAModelEObjectDescription
import rba.tool.editor.ui.util.CharacterUtil
import rba.view.Area
import rba.view.AreaSet
import rba.view.Display
import rba.view.Size
import rba.view.ViewContent
import rba.view.ViewContentSet
/**
* See https://www.eclipse.org/Xtext/documentation/304_ide_concepts.html#content-assist
* on how to customize the content assistant.
*/
class RBAModelProposalProvider extends AbstractRBAModelProposalProvider {
private final static Logger log = Logger.getLogger(RBAModelProposalProvider);
@Inject RBAModelExpressionScopeCreator expressionScopeCreator;
override completeKeyword(Keyword keyword, ContentAssistContext contentAssistContext, ICompletionProposalAcceptor acceptor) {
if (!CharacterUtil.isKeywordWorthyToPropose(keyword)) {
super.completeKeyword(keyword, contentAssistContext, acceptor)
}
}
override lookupCrossReference(CrossReference crossReference, ContentAssistContext contentAssistContext, ICompletionProposalAcceptor acceptor) {
lookupCrossReference(crossReference, contentAssistContext, acceptor, getFeatureDescriptionPredicate(crossReference, contentAssistContext));
}
def protected Predicate<IEObjectDescription> getFeatureDescriptionPredicate(CrossReference crossReference, ContentAssistContext contentAssistContext) {
return Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
if (input.EObjectOrProxy instanceof Variable) {
return contentAssistContext.currentModel.internalLambdaExpression(input.EObjectOrProxy);
}
if (input.EObjectOrProxy instanceof Size) {
return isValidSizeModel(input.EObjectOrProxy, crossReference)
}
return true;
}
});
}
def private boolean isValidSizeModel(EObject objectOrProxy, CrossReference crossReference) {
var EObject tmpObj
if (objectOrProxy.eIsProxy) {
// resolve proxy object with crossReference
tmpObj = EcoreUtil.resolve(objectOrProxy, crossReference);
} else {
tmpObj = objectOrProxy
}
// get the container of the real object
if (tmpObj instanceof Size) {
if (!(tmpObj.eContainer instanceof Area) && !(tmpObj.eContainer instanceof Content) && !(tmpObj.eContainer instanceof Display)) {
return true;
}
}
return false;
}
def protected boolean internalLambdaExpression(EObject eObj1, EObject eObj2) {
if (eObj1 === null || !(eObj2 instanceof Variable)) {
return false;
}
if (eObj1 instanceof LambdaExpression && (eObj1 as LambdaExpression).x === eObj2) {
return true;
}
return internalLambdaExpression(eObj1.eContainer, eObj2);
}
override protected getProposalFactory(String ruleName, ContentAssistContext contentAssistContext) {
return new DefaultProposalCreator(contentAssistContext, ruleName, getQualifiedNameConverter()) {
override apply(IEObjectDescription candidate) {
if (candidate === null)
return null;
var ICompletionProposal result = null;
var String proposal = qualifiedNameConverter.toString(candidate.getName());
if (valueConverter !== null) {
try {
proposal = valueConverter.toString(proposal);
} catch (ValueConverterException e) {
log.debug(e.getMessage(), e);
return null;
}
} else if (ruleName !== null) {
try {
proposal = getValueConverter().toString(proposal, ruleName);
} catch (ValueConverterException e) {
log.debug(e.getMessage(), e);
return null;
}
}
val EObject objectOrProxy = candidate.getEObjectOrProxy();
val StyledString displayString = getStyledDisplayString(candidate);
val Image image = getImage(candidate);
result = createCompletionProposal(proposal, displayString, image, contentAssistContext);
if (result instanceof ConfigurableCompletionProposal) {
(result as ConfigurableCompletionProposal).setProposalContextResource(contentAssistContext.getResource());
(result as ConfigurableCompletionProposal).setAdditionalProposalInfo(objectOrProxy);
(result as ConfigurableCompletionProposal).setHover(hover);
if (candidate instanceof RBAModelEObjectDescription) {
(result as ConfigurableCompletionProposal).setCursorPosition((result as ConfigurableCompletionProposal).cursorPosition +
(candidate as RBAModelEObjectDescription).getAdditionalInfo().get(0));
(result as ConfigurableCompletionProposal).setPriority((result as ConfigurableCompletionProposal).priority +
(candidate as RBAModelEObjectDescription).getAdditionalInfo().get(1));
}
}
getPriorityHelper().adjustCrossReferencePriority(result, contentAssistContext.getPrefix());
return result;
}
};
}
override completeAreaSet_Target(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof Area || input.EObjectOrProxy instanceof AreaSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeViewContentSet_Target(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof ViewContent || input.EObjectOrProxy instanceof ViewContentSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeViewContentSet_Allocatable(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof Area || input.EObjectOrProxy instanceof AreaSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeZoneSet_Target(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof Zone || input.EObjectOrProxy instanceof ZoneSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeSoundContentSet_Target(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof SoundContent || input.EObjectOrProxy instanceof SoundContentSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeSoundContentSet_Allocatable(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof Zone || input.EObjectOrProxy instanceof ZoneSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeViewContent_Allocatable(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof Area || input.EObjectOrProxy instanceof AreaSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeSoundContent_Allocatable(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val Predicate<IEObjectDescription> filter = Predicates.and(new Predicate<IEObjectDescription>() {
override public boolean apply(IEObjectDescription input) {
return (input.EObjectOrProxy instanceof Zone || input.EObjectOrProxy instanceof ZoneSet);
}
});
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor, filter);
}
override completeCMemberFeatureReference_RefObject(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
createMemberAndOperatorProposals(model, assignment, context, acceptor);
}
override completeVMemberFeatureReference_RefObject(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
createMemberAndOperatorProposals(model, assignment, context, acceptor);
}
def protected void createMemberAndOperatorProposals(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val IScope scope = expressionScopeCreator.getExpressionScope(model, context);
if (scope === null) {
lookupCrossReference((assignment.getTerminal() as CrossReference), context, acceptor);
} else {
getCrossReferenceProposalCreator().lookupCrossReference(scope, model, RBACorePackage.Literals.OBJECT_REFERENCE__REF_OBJECT, acceptor,
getFeatureDescriptionPredicate((assignment.getTerminal() as CrossReference), context), getProposalFactory("ValidID", context));
}
}
override complete_OpGetProperty(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
val IScope scope = expressionScopeCreator.getExpressionScope(model, context);
if (scope !== null) {
getCrossReferenceProposalCreator().lookupCrossReference(scope, model, RBACorePackage.Literals.OPERATOR__OPERAND, acceptor, Predicates.<IEObjectDescription>alwaysTrue(),
getProposalFactory(null, context));
}
}
}
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