/**
* Copyright (c) 2002-2012 IBM Corporation 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:
* IBM - Initial API and implementation
*/
package org.eclipse.emf.edit.provider.resource;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.eclipse.emf.common.command.AbstractCommand;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.edit.EMFEditPlugin;
import org.eclipse.emf.edit.command.AbstractOverrideableCommand;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.emf.edit.provider.ItemProviderAdapter;
import org.eclipse.emf.edit.provider.ViewerNotification;
/**
* This is the item provider adapter for a {@link org.eclipse.emf.ecore.resource.ResourceSet} object.
*/
public class ResourceSetItemProvider
extends ItemProviderAdapter
implements
IEditingDomainItemProvider,
IStructuredItemContentProvider,
ITreeItemContentProvider,
IItemLabelProvider,
IItemPropertySource
{
/**
* This constructs an instance from a factory and a notifier.
*/
public ResourceSetItemProvider(AdapterFactory adapterFactory)
{
super(adapterFactory);
}
/**
* This returns the property descriptors for the adapted class.
*/
@Override
public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object)
{
if (itemPropertyDescriptors == null)
{
super.getPropertyDescriptors(object);
}
return itemPropertyDescriptors;
}
@Override
public Collection<?> getChildren(Object object)
{
ResourceSet resourceSet = (ResourceSet)object;
synchronized (resourceSet)
{
return new ArrayList<Resource>(resourceSet.getResources());
}
}
/**
* This returns the parent of the ResourceSet.
*/
@Override
public Object getParent(Object object)
{
return null;
}
/**
* This returns ResourceSet.gif.
*/
@Override
public Object getImage(Object object)
{
return getResourceLocator().getImage("full/obj16/ResourceSet");
}
/**
* This returns the label text for the adapted class.
*/
@Override
public String getText(Object object)
{
return EMFEditPlugin.INSTANCE.getString("_UI_ResourceSet_label");
}
/**
* This handles notification by calling {@link #fireNotifyChanged(Notification) fireNotifyChanged}.
*/
@Override
public void notifyChanged(Notification notification)
{
switch (notification.getFeatureID(ResourceSet.class))
{
case ResourceSet.RESOURCE_SET__RESOURCES:
{
fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
return;
}
}
super.notifyChanged(notification);
}
@Override
public Collection<?> getNewChildDescriptors(Object object, EditingDomain editingDomain, Object sibling)
{
return Collections.emptyList();
}
/**
* This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children
* that can be created under this object.
*/
@Override
protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object)
{
super.collectNewChildDescriptors(newChildDescriptors, object);
}
@Override
protected Command createDragAndDropCommand(EditingDomain domain, Object owner, float location, int operations, int operation, final Collection<?> collection)
{
final ResourceSet resourceSet = (ResourceSet)owner;
class LoadResourceCommand extends AbstractOverrideableCommand implements AbstractCommand.NonDirtying
{
protected LoadResourceCommand(EditingDomain domain)
{
super(domain);
}
protected List<Resource> resources;
@Override
protected boolean prepare()
{
for (Object object : collection)
{
if (!(object instanceof URI))
{
return false;
}
}
return true;
}
@Override
public void doExecute()
{
resources = new ArrayList<Resource>();
for (Object object : collection)
{
URI uri = (URI)object;
Resource resource = resourceSet.getResource(uri, false);
if (resource == null)
{
try
{
resource = resourceSet.getResource(uri, true);
}
catch (RuntimeException exception)
{
resource = resourceSet.getResource(uri, false);
EMFEditPlugin.INSTANCE.log(exception);
}
}
if (resource != null)
{
resources.add(resource);
}
}
}
@Override
public void doUndo()
{
resourceSet.getResources().removeAll(resources);
resources = null;
}
@Override
public void doRedo()
{
doExecute();
}
@Override
public Collection<?> doGetAffectedObjects()
{
return resources == null ? Collections.singleton(resourceSet) : resources;
}
@Override
public String doGetDescription()
{
return EMFEditPlugin.INSTANCE.getString("_UI_LoadResources_description");
}
@Override
public String doGetLabel()
{
return EMFEditPlugin.INSTANCE.getString("_UI_LoadResources_label");
}
}
return new LoadResourceCommand(domain);
}
/**
* Return the resource locator for this item provider's resources.
*/
@Override
public ResourceLocator getResourceLocator()
{
return EMFEditPlugin.INSTANCE;
}
}