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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:
* Remi Schnekenburger (CEA LIST) Remi.Schnekenburger@cea.fr - Initial API and implementation
* Yann Tanguy (CEA LIST) yann.tanguy@cea.fr - customization for Parameter
*
*****************************************************************************/
package org.eclipse.papyrus.parsers.texteditor.parameterlabel;
import java.util.Collection;
import java.util.Map;
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.ParameterLabelLexer;
import org.eclipse.papyrus.parsers.antlr.ParameterLabelParser;
import org.eclipse.papyrus.parsers.texteditor.CompletionFilterSourceViewerConfiguration;
import org.eclipse.papyrus.parsers.texteditor.LabelCompletionProcessor;
import org.eclipse.papyrus.parsers.texteditor.CompletionFilterSourceViewerConfiguration.ICompletionFilter;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.DefaultValueCompletionProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.DirectionCompletionProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.MultiplicityCompletionProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.NameCompletionProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.ParameterModifierProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.ParameterModifiersProposal;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.TypeCompletionProposalComputer;
import org.eclipse.papyrus.parsers.texteditor.completionproposals.VisibilityCompletionProposal;
import org.eclipse.papyrus.parsers.util.SimpleStringErrorReporter;
import org.eclipse.uml2.uml.Parameter;
/**
* 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 ParameterLabelCompletionProcessor extends LabelCompletionProcessor implements IContext {
/** The completion filter. */
private final ICompletionFilter completionFilter;
/** The {@link Parameter} to modify */
private Parameter parameter;
/** The modifiers used. */
private Map<String, Boolean> modifiersUsed;
/**
* Constructor
*
* @param parameter
* the parsed {@link Parameter}
*/
public ParameterLabelCompletionProcessor(Parameter parameter) {
this.parameter = parameter;
this.completionFilter = new CompletionFilterSourceViewerConfiguration.NullCompletionFilter();
}
/**
* The Constructor.
*
* @param property
* the property
* @param iCompletionFilter
* the i completion filter
*/
public ParameterLabelCompletionProcessor(Parameter parameter, ICompletionFilter iCompletionFilter) {
this.parameter = parameter;
this.completionFilter = iCompletionFilter;
}
/*
* (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 Parameter label.
*
* @param viewer
* @param documentOffset
*
* @return completion proposals
*/
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int documentOffset) {
String text;
String prefix = "";
ParameterLabelLexer lexer = null;
ParameterLabelParser parser = null;
Collection<ICompletionProposal> result = null;
int selectionRange = 0;
try {
text = viewer.getDocument().get(0, documentOffset);
lexer = new ParameterLabelLexer(new ANTLRStringStream(text));
CommonTokenStream tokens = new CommonTokenStream(lexer);
parser = new ParameterLabelParser(tokens, parameter, new SimpleStringErrorReporter());
parser.setValidation(true);
selectionRange = viewer.getSelectedRange().y;
parser.label();
modifiersUsed = parser.getModifiersUsed();
result = computeCompletions(viewer, parser.getContext(), documentOffset, selectionRange);
} catch (BadLocationException e) {
e.printStackTrace();
} catch (RuntimeException e) {
modifiersUsed = parser.getModifiersUsed();
prefix = getPrefix(viewer, documentOffset);
result = computeCompletions(viewer, parser.getContext(), documentOffset, selectionRange);
} catch (RecognitionException e) {
modifiersUsed = parser.getModifiersUsed();
prefix = getPrefix(viewer, documentOffset);
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>();
ParameterModifierProposal modifierProposalComputer = new ParameterModifierProposal();
modifierProposalComputer.setModifiersUsed(modifiersUsed);
String prefix = getPrefix(viewer, documentOffset);
switch (context) {
// DEFAULT : visibility or direction or name
case IContext.DEFAULT:
v.addAll(new VisibilityCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new DirectionCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new NameCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// VISIBILITY : direction or name
case IContext.VISIBILITY:
v.addAll(new DirectionCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new NameCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// DIRECTION : name
case IContext.DIRECTION:
v.addAll(new NameCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// NAME: either ':' or ":undefined"
case IContext.NAME:
v.addAll(createCompletionProposalsWithDifferentName(new String[] { ": ", ": <Undefined>" }, new String[] { "Parameter type", "Undefined Parameter type" }, new String[] { ": <Type 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
TypeCompletionProposalComputer computer = new TypeCompletionProposalComputer(completionFilter, IContext.AFTER_COLON);
computer.setElement(parameter);
v.addAll(computer.generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// MULTIPLICITY: multiplicity or default value or property modifiers
case IContext.PARAMETER_TYPE:
// specific prefix for type... ('<' possible at the beginning)
prefix = getPrefixForType(viewer, documentOffset);
computer = new TypeCompletionProposalComputer(completionFilter, IContext.PARAMETER_TYPE);
computer.setElement(parameter);
v.addAll(computer.generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// IN_MULTIPLICITY(after '['): does nothing
case IContext.MULTIPLICITY:
// create properties visible in the model
// specific prefix for type... ('<' possible at the beginning)
prefix = getPrefixForType(viewer, documentOffset);
// generate completion for TypeUtil
computer = new TypeCompletionProposalComputer(completionFilter, IContext.AFTER_COLON);
computer.setElement(parameter);
v.addAll(computer.generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new MultiplicityCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new DefaultValueCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new ParameterModifiersProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// : default value or property modifiers
case IContext.IN_MULTIPLICITY:
prefix = getPrefixForMultiplicity(viewer, documentOffset);
v.addAll(new MultiplicityCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// AFTER_MULTIPLICITY(after ']')
case IContext.AFTER_MULTIPLICITY:
v.addAll(new DefaultValueCompletionProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
v.addAll(new ParameterModifiersProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
// DEFAULT_VALUE: property modifiers
case IContext.DEFAULT_VALUE:
v.addAll(new ParameterModifiersProposal().generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
case IContext.PARAMETER_MODIFIERS:
v.addAll(modifierProposalComputer.generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
case IContext.PARAMETER_MODIFIER:
v.addAll(modifierProposalComputer.generateCompletionProposals(documentOffset, selectionRange, prefix));
break;
default:
break;
}
return v;
}
}
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