/*
* Copyright (c) 2006 Borland Software Corporation
*
* 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:
* Michael Golubev (Borland) - initial API and implementation
*/
package org.eclipse.uml2.diagram.profile.parser.metaclass;
import java.util.Collections;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParserEditStatus;
import org.eclipse.gmf.runtime.common.ui.services.parser.ParserEditStatus;
import org.eclipse.gmf.runtime.emf.ui.services.parser.ISemanticParser;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.uml2.diagram.parser.assist.EObjectCompletionProcessor;
import org.eclipse.uml2.diagram.profile.part.CustomMessages;
import org.eclipse.uml2.diagram.profile.part.UMLDiagramEditorPlugin;
import org.eclipse.uml2.uml.Classifier;
import org.eclipse.uml2.uml.ElementImport;
import org.eclipse.uml2.uml.UMLPackage;
public class ReferencedMetaclassParser implements ISemanticParser {
private final MetaclassesList myMetaclassesList = new MetaclassesList();
private final CompletionProcessor myCompletionProcessor = new CompletionProcessor();
private final static String NO_METACLASS = CustomMessages.ReferencedMetaclassParser_no_metaclass;
public IContentAssistProcessor getCompletionProcessor(IAdaptable element) {
myCompletionProcessor.setContext(doAdapt(element));
return myCompletionProcessor;
}
public boolean areSemanticElementsAffected(EObject listener, Object notification) {
if (notification instanceof Notification) {
Object feature = ((Notification) notification).getFeature();
return UMLPackage.eINSTANCE.getElementImport_ImportedElement().equals(feature);
}
return false;
}
public List<?> getSemanticElementsBeingParsed(EObject element) {
return Collections.singletonList(element);
}
public String getEditString(IAdaptable element, int flags) {
return getPrintString(element, flags);
}
public String getPrintString(IAdaptable element, int flags) {
ElementImport elementImport = doAdapt(element);
String result = null;
if (elementImport != null) {
result = elementImport.getName();
}
return result == null ? NO_METACLASS : result;
}
public ICommand getParseCommand(IAdaptable element, String newString, int flags) {
org.eclipse.uml2.uml.Class metaclass = findMetaclass(element, newString);
if (metaclass == null) {
return UnexecutableCommand.INSTANCE;
}
ElementImport elementImport = doAdapt(element);
if (metaclass.equals(elementImport.getImportedElement())) {
return UnexecutableCommand.INSTANCE;
}
return new ReplaceReferencedMetaclassCommand(elementImport, metaclass);
}
public boolean isAffectingEvent(Object event, int flags) {
return false;
}
public IParserEditStatus isValidEditString(IAdaptable element, String editString) {
Classifier metaclass = findMetaclass(element, editString);
if (metaclass == null) {
return new ParserEditStatus(IStatus.ERROR, UMLDiagramEditorPlugin.ID, ParserEditStatus.UNEDITABLE, "Unknown metaclass: " + editString, null); //$NON-NLS-1$
}
return ParserEditStatus.EDITABLE_STATUS;
}
private org.eclipse.uml2.uml.Class findMetaclass(IAdaptable parserElement, String editString) {
if (editString == null) {
return null;
}
editString = editString.trim();
if (editString.length() == 0) {
return null;
}
return myMetaclassesList.findElement(doAdapt(parserElement), editString);
}
private ElementImport doAdapt(IAdaptable adaptable) {
//intentionally CCE
ElementImport elementImport = (ElementImport) adaptable.getAdapter(EObject.class);
return elementImport;
}
private class CompletionProcessor extends EObjectCompletionProcessor {
@Override
protected Iterable<String> computeContextProposals(EObject context) {
return myMetaclassesList.getElementNames(context);
}
}
}