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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
* Vincent Lorenzo (CEA-LIST) vincent.lorenzo@cea.fr
*****************************************************************************/
package org.eclipse.papyrus.properties.runtime.modelhandler.emf;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.commands.operations.IUndoableOperation;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.papyrus.properties.runtime.Activator;
import org.eclipse.papyrus.properties.runtime.propertyeditor.descriptor.IPropertyEditorDescriptor;
import org.eclipse.swt.widgets.Composite;
/**
* Extract or inject values for a string-typed feature.
*/
public class StringEMFModelHandler extends EMFFeatureModelHandler {
/** ID of this model handler */
public static final String ID = "String"; //$NON-NLS-1$
/**
* Creates a new StringEMFModelHandler.
*
* @param featureName
* the name of the feature to edit
*/
public StringEMFModelHandler(String featureName) {
super(featureName);
}
/**
* {@inheritDoc}
*/
@Override
public void setValueInModel(EObject objectToEdit, Object newValue) {
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit == null) {
return;
}
// check the type of the feature to set
EClassifier type = featureToEdit.getEType();
if(type == null) {
Activator.log.debug("Impossible to find the type of the feature: " + getFeatureName()); //$NON-NLS-1$
} else {
if(String.class.isAssignableFrom(type.getInstanceClass())) {
objectToEdit.eSet(featureToEdit, newValue);
} else if(Integer.TYPE.isAssignableFrom(type.getInstanceClass())) {
try {
int value = Integer.parseInt(newValue.toString());
objectToEdit.eSet(featureToEdit, value);
} catch (NumberFormatException e) {
Activator.log.debug(newValue + " can not be parsed as an integer"); //$NON-NLS-1$
}
} else {
Activator.log.error("Feature: " + getFeatureName() + ". Impossible to understand the value for the type: " + featureToEdit.getEType().getInstanceClass(), null); //$NON-NLS-1$ //$NON-NLS-2$
}
}
}
/**
* {@inheritDoc}
*/
@Override
public void completeEditorDescriptor(IPropertyEditorDescriptor descriptor, List<? extends EObject> objectToEdit) {
// nothing to do here
}
/**
* {@inheritDoc}
*/
public String getId() {
return ID;
}
/**
* {@inheritDoc}
*/
@Override
public List<IUndoableOperation> getCreateValueOperations(List<? extends EObject> objectsToEdit, Composite parent) {
List<IUndoableOperation> operations = new ArrayList<IUndoableOperation>(1);
TransactionalEditingDomain editingDomain = EMFUtils.getTransactionalEditingDomain(objectsToEdit);
if(editingDomain == null) {
Activator.log.error("Impossible during creation operation to find the editing domain for objects: " + objectsToEdit, null); //$NON-NLS-1$
return null;
}
// int indexOfNewValue = NEW_VALUE_NOT_SET_INDEX;
CompositeTransactionalCommand command = new CompositeTransactionalCommand(editingDomain, "Create new String Values"); //$NON-NLS-1$
for(EObject objectToEdit : objectsToEdit) {
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit == null) {
return null;
}
//CreateStringValueOperation operation = new CreateStringValueOperation(editingDomain, "Create new String Value", objectToEdit);
IUndoableOperation operation = getCreateStringValueCommand(editingDomain, "Create new String Value", objectToEdit); //$NON-NLS-1$
if(operation != null) {
command.add(operation);
}
// if(indexOfNewValue == NEW_VALUE_NOT_SET_INDEX) { // try to update
// indexOfNewValue = operation.getIndexOfNewValue();
// }
}
operations.add(command.reduce());
return operations;
}
/**
* Returns the command to create a string value
*
* @param editingDomain
* the editing domain
* @param string
* the command's name
* @param objectToEdit
* the object to edit
* @return
* The command to create a string value
*/
protected IUndoableOperation getCreateStringValueCommand(TransactionalEditingDomain editingDomain, String string, EObject objectToEdit) {
CompositeTransactionalCommand command = new CompositeTransactionalCommand(editingDomain, string);
int indexOfNewValue = -2;
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit == null) {
return command;
}
if(featureToEdit.getUpperBound() == 1) {
indexOfNewValue = -1;
} else {
@SuppressWarnings("unchecked")
List<Object> values = new ArrayList<Object>((List<Object>)objectToEdit.eGet(featureToEdit));
indexOfNewValue = values.size();
}
// create the value and add it to the feature
// if feature = simple valued => set
// if feature = multi valued => add at the end
Object newValue;
if(featureToEdit.getUpperBound() == 1) {
newValue = getInitialValue(objectToEdit);
} else {
@SuppressWarnings("unchecked")
List<Object> values = new ArrayList<Object>((List<Object>)objectToEdit.eGet(featureToEdit));
values.add(indexOfNewValue, getInitialValue(objectToEdit));
newValue = values;
}
SetRequest[] requests = getSetRequest(editingDomain, objectToEdit, newValue);
if(requests != null) {
org.eclipse.papyrus.service.edit.service.IElementEditService provider = org.eclipse.papyrus.service.edit.service.ElementEditServiceUtils.getCommandProvider(objectToEdit);
if(provider != null) {
ICommand editCommand = null;
for(SetRequest current : requests) {
editCommand = provider.getEditCommand(current);
if(editCommand != null && editCommand.canExecute()) {
command.add(editCommand);
}
}
}
}
return command;
}
// /**
// * Operation to create a String value for the controlled property
// */
// protected class CreateStringValueOperation extends AbstractTransactionalCommand {
//
// /** object to edit */
// protected final EObject objectToEdit;
//
// /** index of the value to add (-1 in case of single valued property) */
// private int indexOfNewValue = -2;
//
// /**
// * Initializes me with the editing domain, a label, transaction options, and
// * a list of {@link IFile}s that anticipate modifying when I am executed,
// * undone or redone.
// *
// * @param domain
// * the editing domain used to modify the model
// * @param label
// * my user-readable label, should never be <code>null</code>.
// * @param objectToEdit
// * the {@link EObject} to edit
// */
// public CreateStringValueOperation(TransactionalEditingDomain domain, String label, EObject objectToEdit) {
// super(domain, (label == null) ? "" : label, null);
// this.objectToEdit = objectToEdit;
//
// EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
// if(featureToEdit.getUpperBound() == 1) {
// indexOfNewValue = -1;
// } else {
// @SuppressWarnings("unchecked")
// List<Object> values = new ArrayList<Object>((List<Object>)objectToEdit.eGet(featureToEdit));
// indexOfNewValue = values.size();
// }
// }
//
// /**
// * Returns the index at which the value will be added
// *
// * @return the index at which the value will be added
// */
// public int getIndexOfNewValue() {
// return indexOfNewValue;
// }
//
// /**
// * {@inheritDoc}
// */
// @Override
// protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
// // create the value and add it to the feature
// // if feature = simple valued => set
// // if feature = multi valued => add at the end
// EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
// if(featureToEdit == null) {
// return CommandResult.newErrorCommandResult("Impossible to find the feature " + getFeatureName());
// }
// Object newValue;
// if(featureToEdit.getUpperBound() == 1) {
// newValue = getInitialValue(objectToEdit);
// } else {
// @SuppressWarnings("unchecked")
// List<Object> values = new ArrayList<Object>((List<Object>)objectToEdit.eGet(featureToEdit));
// values.add(indexOfNewValue, getInitialValue(objectToEdit));
// newValue = values;
// }
// setValueInModel(objectToEdit, newValue);
// return CommandResult.newOKCommandResult();
// }
// }
/**
* Returns the initial value for a new value of the feature
*
* @param objectToEdit
* the object to edit
*
* @return the initial value, not <code>null</code>
*/
public Object getInitialValue(EObject objectToEdit) {
String featureName = getFeatureName();
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit.getUpperBound() == 1) {
return featureName;
} else {
for(int suffix = 0; suffix < 1000; suffix++) {
String tmpName = featureName + suffix;
boolean found = false;
@SuppressWarnings("unchecked")
List<Object> values = new ArrayList<Object>((List<Object>)objectToEdit.eGet(featureToEdit));
for(Object value : values) {
if(tmpName.equals(value)) {
found = true;
}
}
if(!found) {
return tmpName;
}
}
return featureName;
}
}
/**
*
* @see org.eclipse.papyrus.properties.runtime.modelhandler.emf.IEMFModelHandler#getSetRequest(org.eclipse.emf.transaction.TransactionalEditingDomain,
* org.eclipse.emf.ecore.EObject, java.lang.Object)
*
* @param domain
* @param objectToEdit
* @param newValue
* @return
*/
public SetRequest[] getSetRequest(TransactionalEditingDomain domain, EObject objectToEdit, Object newValue) {
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit == null) {
return null;
}
// check the type of the feature to set
EClassifier type = featureToEdit.getEType();
if(type == null) {
Activator.log.debug("Impossible to find the type of the feature: " + getFeatureName()); //$NON-NLS-1$
return null;
} else {
if(String.class.isAssignableFrom(type.getInstanceClass())) {
return new SetRequest[]{ new SetRequest(domain, objectToEdit, featureToEdit, newValue) };
} else if(Integer.TYPE.isAssignableFrom(type.getInstanceClass())) {
try {
int value = Integer.parseInt(newValue.toString());
return new SetRequest[]{ new SetRequest(domain, objectToEdit, featureToEdit, value) };
} catch (NumberFormatException e) {
Activator.log.debug(newValue + " can not be parsed as an integer"); //$NON-NLS-1$
}
} else {
Activator.log.error("Feature: " + getFeatureName() + ". Impossible to understand the value for the type: " + featureToEdit.getEType().getInstanceClass(), null); //$NON-NLS-1$ //$NON-NLS-2$
}
}
return null;
}
}
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