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/*****************************************************************************
* Copyright (c) 2014 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:
* Jérémie Tatibouet
* Arnaud Cuccuru
*
*****************************************************************************/
package org.eclipse.papyrus.uml.alf.properties.xtext.parser;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParser;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParserEditStatus;
import org.eclipse.gmf.runtime.common.ui.services.parser.ParserEditStatus;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.uml.alf.properties.xtext.configuration.AbstractAlfXtextEditorConfiguration;
import org.eclipse.uml2.uml.NamedElement;
/**
* Provide the possibility to use the ALF parser directly in the context of GMF.
*/
public class GMFAlfParser implements IParser {
protected final static String TEXTUAL_REPRESENTATION_ERROR = "/*String representation could not be computed*/";
protected final EObject semanticObject;
protected AbstractAlfXtextEditorConfiguration configuration;
/**
* Retrieve the NamedElement hidden behind the adapter
*
* @param adaptable
* @return the adapted element
*/
protected NamedElement adapt(IAdaptable adaptable) {
Object o = EMFHelper.getEObject(adaptable);
if (o != null && o instanceof NamedElement) {
return (NamedElement) o;
}
return null;
}
/**
* Initializes the context in which type names are going to be resolved
*/
public GMFAlfParser(final EObject semanticObject, final AbstractAlfXtextEditorConfiguration configuration) {
this.semanticObject = semanticObject;
this.configuration = configuration;
}
/***
* Delegate computation of the textual representation to the configuration
*/
public String getEditString(IAdaptable element, int flags) {
NamedElement target = this.adapt(element);
if (target != null) {
return this.configuration.getEditString(target);
} else if (this.semanticObject != null) {
return this.configuration.getEditString(this.semanticObject);
} else {
return TEXTUAL_REPRESENTATION_ERROR;
}
}
public IParserEditStatus isValidEditString(IAdaptable element, String editString) {
return ParserEditStatus.EDITABLE_STATUS;
}
/**
* Delegate creation of the parse command to the configuration
*/
public ICommand getParseCommand(IAdaptable element, String newString, int flags) {
NamedElement target = this.adapt(element);
if (target != null) {
return this.configuration.getParseCommand(newString, target, null);
} else if (this.semanticObject != null) {
return this.configuration.getParseCommand(newString, this.semanticObject, null);
} else {
return null;
}
}
/**
* No differences between results returned by getPrintString or getEditString
*/
public String getPrintString(IAdaptable element, int flags) {
return this.getEditString(element, flags);
}
public boolean isAffectingEvent(Object event, int flags) {
return false;
}
public IContentAssistProcessor getCompletionProcessor(IAdaptable element) {
return null;
}
}
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