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/*****************************************************************************
* Copyright (c) 2013, 2014 Atos, Christian W. Damus, and others.
*
* 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:
* Arthur Daussy (Atos) arthur.daussy@atos.net - Initial API and implementation
* Christian W. Damus - bug 399859
* Gabriel Pascual (ALL4TEC) gabriel.pascual@all4tec.net - Bug 436952
* Gabriel Pascual (ALL4TEC) gabriel.pascual@all4tec.net - Bug 436998
* Nicolas FAUVERGUE (ALL4TEC) nicolas.fauvergue@all4tec.net - Bug 496905
*
*****************************************************************************/
package org.eclipse.papyrus.infra.services.controlmode.commands;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.services.controlmode.ControlModeRequest;
import org.eclipse.papyrus.infra.services.controlmode.messages.Messages;
/**
* Command used to create new controlled resource.
* This command will create the new resources. It will also handle correctly undo and redo
*
* @author adaussy
*
*/
public class CreateControlResource extends AbstractControlResourceCommand {
/** The Constant MODELSET_ERROR. */
private static final String MODELSET_ERROR = Messages.getString("CreateControlResource.modelset.error"); //$NON-NLS-1$
/** The Constant CREATION_RESOURCE_ERROR. */
private static final String CREATION_RESOURCE_ERROR = Messages.getString("CreateControlResource.resource.error"); //$NON-NLS-1$
/**
* @param request
* {@link CreateControlResource#request}
*/
public CreateControlResource(ControlModeRequest request) {
super(request, Messages.getString("CreateControlResource.command.title"), null); //$NON-NLS-1$
}
/**
* @param request
* {@link CreateControlResource#request}
* @param newFileExtension
* {@link CreateControlResource#newFileExtension}
*/
public CreateControlResource(ControlModeRequest request, String newFileExtension) {
this(request);
this.newFileExtension = newFileExtension;
}
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
Resource resource = getResourceSet().getResource(getTargetUri(), false);
boolean resourceInSet = resource != null;
if (resourceInSet) {
if (failedToLoadBecauseNonExistent(resource) || isNotYetDeteted(resource)) {
/*
* It doesn't exist or it will be deleted during the save, so by re-creating it we may actually help to fix unresolved proxies
* (such as from an out-of-date sash model)
*/
resource.getResourceSet().getResources().remove(resource);
resource = null;
resourceInSet = false;
}
}
Resource newResource = null;
if (resource == null) {
newResource = getResourceSet().createResource(getTargetUri());
if (newResource == null) {
return CommandResult.newErrorCommandResult(CREATION_RESOURCE_ERROR);
}
} else {
// Conserve existing resource to add new controlled object
newResource = resource;
}
// Set the new created target to the request if other command need it
getRequest().setTargetResource(newResource, getFileExtension());
// Force modified to true to force serialization
newResource.setModified(true);
// In case the resource has been uncontrolled before the it's still the resource to delete on save of the model set. So it has to be removed
getRequest().getModelSet().getResourcesToDeleteOnSave().remove(newResource.getURI());
return CommandResult.newOKCommandResult(newResource);
}
/**
* Checks if the resource is not yet detete.
*
* @param resource
* the resource
* @return true, if is not yet detete
*/
protected boolean isNotYetDeteted(Resource resource) {
boolean result = false;
ResourceSet resourceSet = getResourceSet();
if (resourceSet instanceof ModelSet) {
result = ((ModelSet) resourceSet).getResourcesToDeleteOnSave().contains(resource.getURI());
}
return result;
}
/**
* Failed to load because non existent.
*
* @param resource
* the resource
* @return true, if successful
*/
protected boolean failedToLoadBecauseNonExistent(Resource resource) {
boolean result = false;
if (resource.getContents().isEmpty() && !resource.getErrors().isEmpty()) {
// Does it exist to load it?
result = !resource.getResourceSet().getURIConverter().exists(resource.getURI(), null);
}
return result;
}
@Override
protected IStatus doUndo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
IStatus superStatus = super.doUndo(monitor, info);
// Delete the related file
Resource oldResource = getRequest().getTargetResource(getFileExtension());
ModelSet modelSet = getRequest().getModelSet();
if (modelSet == null) {
return CommandResult.newErrorCommandResult(MODELSET_ERROR).getStatus();
}
// Force the main resource to update during save
Resource resource = getTargetResrource(getRequest().getTargetObject());
resource.setModified(true);
// Handle old resource
if (!isControlledResourceLocked(getNewURI())) {
getResourceSet().getResources().remove(oldResource);
modelSet.getResourcesToDeleteOnSave().add(oldResource.getURI());
}
oldResource.setModified(true);
return superStatus;
}
/**
* Get the new URI.
*
* @return The new URI.
* @since 2.0
*/
protected URI getNewURI() {
return getRequest().getNewURI();
}
/**
* Gets the target resrource.
*
* @param objectToUncontrol
* the object to uncontrol
* @return the target resrource
*/
protected Resource getTargetResrource(EObject objectToUncontrol) {
return getRequest().getModelSet().getAssociatedResource(objectToUncontrol, getFileExtension(), true);
}
@Override
protected IStatus doRedo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
// Re add the resources to the resourceSet
Resource oldResource = getRequest().getTargetResource(getFileExtension());
getResourceSet().getResources().add(oldResource);
ModelSet modelSet = getRequest().getModelSet();
if (modelSet == null) {
return CommandResult.newErrorCommandResult(MODELSET_ERROR).getStatus();
}
modelSet.getResourcesToDeleteOnSave().remove(oldResource.getURI());
oldResource.setModified(true);
return super.doRedo(monitor, info);
}
}
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