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/*****************************************************************************
* Copyright (c) 2010 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:
* Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.textedit.parameter.xtext.ui.contentassist;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.papyrus.uml.textedit.common.xtext.umlCommon.TypeRule;
import org.eclipse.papyrus.uml.textedit.parameter.xtext.ui.contributions.UMLParameterEditorUtil;
import org.eclipse.papyrus.uml.textedit.parameter.xtext.umlParameter.ModifierSpecification;
import org.eclipse.papyrus.uml.textedit.parameter.xtext.umlParameter.ModifiersRule;
import org.eclipse.papyrus.uml.textedit.parameter.xtext.umlParameter.ParameterRule;
import org.eclipse.uml2.uml.Namespace;
import org.eclipse.uml2.uml.Type;
import org.eclipse.xtext.Assignment;
import org.eclipse.xtext.Keyword;
import org.eclipse.xtext.RuleCall;
import org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext;
import org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor;
/**
* see http://www.eclipse.org/Xtext/documentation/latest/xtext.html#contentAssist on how to customize content assistant
*/
public class UmlParameterProposalProvider extends AbstractUmlParameterProposalProvider {
/**
* Provides custom completion for the specifying the type of a {@link Parameter}
*
* @param model
* @param assignment
* @param context
* @param acceptor
*/
@Override
public void completeParameterRule_Type(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
// the customization consists in proposing nothing. Proposals are handled by other methods.
List<Type> allType = new ArrayList<Type>();
allType.addAll(getRecursivelyOwnedType(getModel()));
allType.addAll(getRecursivelyImportedType(getModel()));
for (Type c : allType) {
if (c.getName().contains(context.getPrefix())) {
String displayString = c.getQualifiedName();
String completionString = UMLParameterEditorUtil.getTypeLabel(c, getModel());
ICompletionProposal completionProposal = createCompletionProposalWithReplacementOfPrefix(c, completionString, displayString, context);
acceptor.accept(completionProposal);
}
}
completeRuleCall(((RuleCall) assignment.getTerminal()), context, acceptor);
}
/**
*
* @see org.eclipse.papyrus.uml.textedit.common.xtext.ui.contentassist.UmlCommonProposalProvider#completeTypeRule_Type(org.eclipse.emf.ecore.EObject, org.eclipse.xtext.Assignment, org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext,
* org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor)
*
* @param model
* @param assignment
* @param context
* @param acceptor
*/
@Override
public void completeTypeRule_Type(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
if (!(model instanceof ParameterRule)) {
return;
} else {
super.completeTypeRule_Type(model, assignment, context, acceptor);
}
}
/**
*
* @see org.eclipse.papyrus.uml.textedit.parameter.xtext.ui.contentassist.AbstractUmlParameterProposalProvider#complete_MultiplicityRule(org.eclipse.emf.ecore.EObject, org.eclipse.xtext.RuleCall,
* org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext, org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor)
*
* @param model
* @param ruleCall
* @param context
* @param acceptor
*/
@Override
public void complete_MultiplicityRule(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
// we complete the multiplicity only when a type is specified
if (model instanceof ParameterRule) {
if (!typeExists((ParameterRule) model)) {
return;
}
}
super.complete_MultiplicityRule(model, ruleCall, context, acceptor);
}
/**
* Provides custom completion for keywords, in the context of "modifiers" specification
*
* @see org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider#completeKeyword(org.eclipse.xtext.Keyword, org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext,
* org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor)
*/
@Override
public void completeKeyword(Keyword keyword, ContentAssistContext contentAssistContext, ICompletionProposalAcceptor acceptor) {
EObject model = contentAssistContext.getCurrentModel();
if (!(model instanceof ModifiersRule)) {
if (model instanceof ParameterRule) {
if ("::".equals(keyword.getValue())) {// :: is proposed only if the Type is a Namespace and if this namespace contains possible element to type the parameter //$NON-NLS-1$
TypeRule typeRule = ((ParameterRule) model).getType();
Type type = null;
if (typeRule != null) {
type = typeRule.getType();
}
if (type != null && typeExists((ParameterRule) model)) {
if (type instanceof Namespace) {
List<Type> includedType = getRecursivelyOwnedType((Namespace) type);
includedType.addAll(getRecursivelyImportedType((Namespace) type));
if (includedType.isEmpty()) {
return;
}
}
}
} else if ("[".equals(keyword.getValue())) { //$NON-NLS-1$
if (!typeExists((ParameterRule) model)) {
return;
}
} else if ("]".equals(keyword.getValue())) { //$NON-NLS-1$
if (!typeExists((ParameterRule) model)) {
return;
}
} else if ("{".equals(keyword.getValue())) { //$NON-NLS-1$
if (!typeExists((ParameterRule) model)) {
return;
}
}
}
super.completeKeyword(keyword, contentAssistContext, acceptor);
return;
}
ModifiersRule modifiersRule = (ModifiersRule) model;
boolean isOrdered = false;
boolean isException = false;
boolean isStream = false;
boolean isUnique = false;
for (ModifierSpecification spec : modifiersRule.getValues()) {
if (spec.getValue() != null) {
switch (spec.getValue()) {
case ORDERED:
isOrdered = true;
break;
case EXCEPTION:
isException = true;
break;
case STREAM:
isStream = true;
break;
case UNIQUE:
isUnique = true;
break;
default:
break;
}
}
}
String value = keyword.getValue();
if (value.equals("ordered")) { //$NON-NLS-1$
if (!isOrdered) {
super.completeKeyword(keyword, contentAssistContext, acceptor);
}
} else if (value.equals("exception")) { //$NON-NLS-1$
if (!isException) {
super.completeKeyword(keyword, contentAssistContext, acceptor);
}
} else if (value.equals("unique")) { //$NON-NLS-1$
if (!isUnique) {
super.completeKeyword(keyword, contentAssistContext, acceptor);
}
} else if (value.equals("stream")) { //$NON-NLS-1$
if (!isStream) {
super.completeKeyword(keyword, contentAssistContext, acceptor);
}
} else {
super.completeKeyword(keyword, contentAssistContext, acceptor);
}
}
/**
* Tests if the type of the {@link ParameterRule} is set
*
* @param parameterRule
* ( a {@link ParameterRule}) to complete)
* @return
* <code>true</code> if the type of the parameter is specified, <code>false</code> if not
*/
protected boolean typeExists(ParameterRule parameterRule) {
if (parameterRule instanceof ParameterRule) {
ParameterRule currentModel = parameterRule;
TypeRule ruleType = currentModel.getType();
if (ruleType == null) {
return true; // <Undefined>
}
Type type = ruleType.getType();
if (type == null) {
return false;
}
if (type.eContainer() == null && type.getName() == null) {
return false;
}
}
return true;
}
}
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