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/*****************************************************************************
* Copyright (c) 2009 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:
* Remi Schnekenburger (CEA LIST) Remi.Schnekenburger@cea.fr - Initial API and implementation
* Yann Tanguy (CEA LIST) yann.tanguy@cea.fr - customization for CollaborationUse
*
*****************************************************************************/
package org.eclipse.papyrus.parsers.texteditor.collaborationuselabel;
import java.util.Collection;
import java.util.Vector;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.RecognitionException;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.papyrus.parsers.antlr.CollaborationUseLabelLexer;
import org.eclipse.papyrus.parsers.antlr.CollaborationUseLabelParser;
import org.eclipse.papyrus.parsers.texteditor.LabelCompletionProcessor;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.CollaborationCompletionProposalComputer;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.NameCompletionProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.VisibilityCompletionProposal;
import org.eclipse.papyrus.parsers.util.SimpleStringErrorReporter;
import org.eclipse.uml2.uml.CollaborationUse;
/**
* Completion processor for action language. <BR>
* Main class to process the different completions given by the texteditor to its user
*
* @author Remi SCHNEKENBURGER
* @see org.eclipse.jface.text.templates.TemplateCompletionProcessor
* @see org.eclipse.jface.text.contentassist.IContentAssistProcessor
* @see com.cea.actionlanguage.sharedresources.texteditor.IPropertyLabelKeywords
*/
public class CollaborationUseLabelCompletionProcessor extends LabelCompletionProcessor implements IContext {
/** The {@link CollaborationUse} to modify */
private CollaborationUse collaborationUse;
/**
* Constructor
*
* @param collaborationUse
* the parsed {@link CollaborationUse}
*/
public CollaborationUseLabelCompletionProcessor(CollaborationUse collaborationUse) {
this.collaborationUse = collaborationUse;
}
/*
* (non-Javadoc)
*
* @see com.cea.papyrus.classdiagram.parsers.texteditor.LabelCompletionProcessor
* #computeCompletionProposals(org.eclipse.jface.text.ITextViewer, int)
*/
/**
* This method computes completion proposal for currently edited CollaborationUse label.
*
* @param viewer
* @param documentOffset
*
* @return completion proposals
*/
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int documentOffset) {
String text;
CollaborationUseLabelLexer lexer = null;
CollaborationUseLabelParser parser = null;
Collection<ICompletionProposal> result = null;
int selectionRange = 0;
try {
text = viewer.getDocument().get(0, documentOffset);
lexer = new CollaborationUseLabelLexer(new ANTLRStringStream(text));
CommonTokenStream tokens = new CommonTokenStream(lexer);
parser = new CollaborationUseLabelParser(tokens, collaborationUse, new SimpleStringErrorReporter());
parser.setValidation(true);
selectionRange = viewer.getSelectedRange().y;
parser.label();
result = computeCompletions(viewer, parser.getContext(), documentOffset, selectionRange);
} catch (BadLocationException e) {
} catch (RuntimeException e) {
result = computeCompletions(viewer, parser.getContext(), documentOffset, selectionRange);
} catch (RecognitionException e) {
result = computeCompletions(viewer, parser.getContext(), documentOffset, selectionRange);
}
return result.toArray(new ICompletionProposal[] {});
}
/*
* (non-Javadoc)
*
* @see com.cea.papyrus.classdiagram.parsers.texteditor.LabelCompletionProcessor
* #computeCompletions(org.eclipse.jface.text.ITextViewer, int, int, int)
*/
/**
* Compute completion possibilities depending on existing edited label (prefix, it may not be
* complete).
*
* @param viewer
* @param selectionRange
* @param context
* @param documentOffset
*
* @return
*/
@Override
public Collection<ICompletionProposal> computeCompletions(ITextViewer viewer, int context, int documentOffset,
int selectionRange) {
Vector<ICompletionProposal> v = new Vector<ICompletionProposal>();
String prefix = getPrefix(viewer, documentOffset);
switch (context) {
// DEFAULT : visibility or name
case IContext.DEFAULT:
v.addAll(new VisibilityCompletionProposal().generateCompletionProposals(documentOffset, selectionRange,
prefix));
v.addAll(new NameCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// VISIBILITY : name
case IContext.VISIBILITY:
v.addAll(new NameCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// NAME: either ':' or ":undefined"
case IContext.NAME:
v.addAll(createCompletionProposalsWithDifferentName(new String[] { ": ", ": <Undefined>" }, new String[] {
"CollaborationUse type", "Undefined CollaborationUse type" }, new String[] {
": <Collaboration Name>", ": <Undefined>" }, "", documentOffset));
break;
// PROPERTY TYPE (after ":") model types or undefined
case IContext.AFTER_COLON:
// create properties visible in the model
// specific prefix for type... ('<' possible at the beginning)
prefix = getPrefixForType(viewer, documentOffset);
// generate completion for TypeUtil
CollaborationCompletionProposalComputer computer = new CollaborationCompletionProposalComputer();
computer.setElement(collaborationUse);
v.addAll(computer.generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// MULTIPLICITY: multiplicity or default value or property modifiers
case IContext.COLLABORATION_USE_TYPE:
// specific prefix for type... ('<' possible at the beginning)
prefix = getPrefixForType(viewer, documentOffset);
computer = new CollaborationCompletionProposalComputer();
computer.setElement(collaborationUse);
v.addAll(computer.generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
default:
break;
}
return v;
}
}
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