JavaDirectEditorConfiguration.java example

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/*****************************************************************************
 * Copyright (c) 2012 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:
 *  CEA LIST - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.uml.textedit.javaconstraint;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.papyrus.commands.wrappers.GMFtoEMFCommandWrapper;
import org.eclipse.papyrus.extensionpoints.editors.configuration.DefaultDirectEditorConfiguration;
import org.eclipse.papyrus.extensionpoints.editors.configuration.IPopupEditorConfiguration;
import org.eclipse.papyrus.extensionpoints.editors.ui.IPopupEditorHelper;
import org.eclipse.uml2.uml.Constraint;
import org.eclipse.uml2.uml.LiteralString;
import org.eclipse.uml2.uml.UMLFactory;


/**
 * this class provides a means to display a an editor to write content into JAVA specification
 *
 */
public class JavaDirectEditorConfiguration extends DefaultDirectEditorConfiguration  {

	
	/**
	 * 
	 * Constructor.
	 *
	 */
	public JavaDirectEditorConfiguration() {
	}

	@Override
	public String getTextToEdit(Object editedObject) {
		Constraint umlConstraint = (Constraint)editedObject ;
		String value = "" ;
		if (umlConstraint.getSpecification() != null) {
			if (umlConstraint.getSpecification() instanceof LiteralString) {
				if (((LiteralString)umlConstraint.getSpecification()).getValue() != null) {
					value += ((LiteralString)umlConstraint.getSpecification()).getValue() ;
				}
			}
			else if (umlConstraint.getSpecification() instanceof org.eclipse.uml2.uml.OpaqueExpression) {
				int indexOfOCLBody = -1 ;
				org.eclipse.uml2.uml.OpaqueExpression opaqueExpression = (org.eclipse.uml2.uml.OpaqueExpression)umlConstraint.getSpecification() ;
				for (int i = 0 ;
					i < opaqueExpression.getLanguages().size() && indexOfOCLBody == -1 ;
					i ++) {
					if (opaqueExpression.getLanguages().get(i).equals("JAVA")) {
						value += opaqueExpression.getBodies().get(i) ;
						indexOfOCLBody = i ;
					}
				}
			}
		}
		return value;
	}
	
	
	public Object postEditAction(Object objectToEdit, String newText) {
		 TransactionalEditingDomain editingDomain =org.eclipse.emf.transaction.util.TransactionUtil.getEditingDomain((org.eclipse.uml2.uml.Constraint)objectToEdit);

			UpdateConstraintCommand updateCommand = new UpdateConstraintCommand(editingDomain,(org.eclipse.uml2.uml.Constraint)objectToEdit, newText);
			editingDomain.getCommandStack().execute(new GMFtoEMFCommandWrapper(updateCommand));
			return updateCommand;
	}
	 
	 /**
		 * the command to save the content of the OCL constraint into the body of the UML constraint element
		 *
		 */
		protected class UpdateConstraintCommand extends AbstractTransactionalCommand
		{
			protected final org.eclipse.uml2.uml.Constraint constraint;
			protected final String newTextualRepresentation;

			public UpdateConstraintCommand(TransactionalEditingDomain editingDomain,org.eclipse.uml2.uml.Constraint constraint, String newTextualRepresentation) {
				super(editingDomain, "Constraint Update", getWorkspaceFiles(constraint));
				this.constraint = constraint;
				this.newTextualRepresentation = newTextualRepresentation;
			}

			protected CommandResult doExecuteWithResult(IProgressMonitor arg0, IAdaptable arg1) throws ExecutionException {
				org.eclipse.uml2.uml.OpaqueExpression opaqueExpression = null ;
				int indexOfOCLBody = -1 ;
				if (constraint.getSpecification() == null || !(constraint.getSpecification() instanceof org.eclipse.uml2.uml.OpaqueExpression)) {
					opaqueExpression = UMLFactory.eINSTANCE.createOpaqueExpression() ;
				} else {
					opaqueExpression = (org.eclipse.uml2.uml.OpaqueExpression)constraint.getSpecification() ;
					for (int i = 0 ; i < opaqueExpression.getLanguages().size() && indexOfOCLBody == -1 ; i++) {
						if (opaqueExpression.getLanguages().get(i).equals("JAVA")) {
							indexOfOCLBody = i ;
						}
					}
				}
				if (indexOfOCLBody == -1) {
					opaqueExpression.getLanguages().add("JAVA") ;
					opaqueExpression.getBodies().add(newTextualRepresentation) ;
				}
				else {
					opaqueExpression.getBodies().remove(indexOfOCLBody) ;
					opaqueExpression.getBodies().add(indexOfOCLBody, newTextualRepresentation) ;
				}
				constraint.setSpecification(opaqueExpression) ;
				return CommandResult.newOKCommandResult(constraint);
			}
		}

	

}