/******************************************************************************
* Copyright (c) 2014 Oracle
* 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:
* Konstantin Komissarchik - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire.ui.internal;
import java.util.List;
import org.eclipse.sapphire.Element;
import org.eclipse.sapphire.ReferenceValue;
import org.eclipse.sapphire.Sapphire;
import org.eclipse.sapphire.java.JavaType;
import org.eclipse.sapphire.java.JavaTypeName;
import org.eclipse.sapphire.services.Service;
import org.eclipse.sapphire.services.ServiceContext;
import org.eclipse.sapphire.services.ServiceProxy;
import org.eclipse.sapphire.ui.ISapphirePart;
import org.eclipse.sapphire.ui.def.PartDef;
import org.eclipse.sapphire.ui.def.ServiceDef;
import org.eclipse.sapphire.util.ListFactory;
import org.eclipse.sapphire.util.SetFactory;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class PartServiceContext extends ServiceContext
{
private final ISapphirePart part;
public PartServiceContext( final ISapphirePart part )
{
super( "Sapphire.Part", Sapphire.services() );
this.part = part;
}
@Override
public <T> T find( final Class<T> type )
{
T obj = super.find( type );
if( obj == null )
{
if( type.isInstance( this.part ) )
{
obj = type.cast( this.part );
}
else if( Element.class.isAssignableFrom( type ) )
{
final Element element = this.part.getLocalModelElement();
if( element != null )
{
if( type == Element.class )
{
obj = type.cast( element );
}
else
{
obj = element.nearest( type );
}
}
}
}
return obj;
}
@Override
protected List<ServiceProxy> local()
{
final ListFactory<ServiceProxy> local = ListFactory.start();
final PartDef partDef = this.part.definition();
for( ServiceDef serviceDef : partDef.getServices() )
{
final Class<? extends Service> serviceImplClass = resolve( serviceDef.getImplementation() );
if( serviceImplClass != null )
{
final SetFactory<String> overridesSetFactory = SetFactory.start();
for( ServiceDef.Override override : serviceDef.getOverrides() )
{
String id = override.getId().text();
if( id != null )
{
id = id.trim();
if( id.length() > 0 )
{
overridesSetFactory.add( id );
}
}
}
local.add
(
new ServiceProxy
(
this,
serviceImplClass.getName(),
serviceImplClass,
null,
overridesSetFactory.result(),
null
)
);
}
}
return local.result();
}
@SuppressWarnings( "unchecked" )
private static <T> Class<T> resolve( final ReferenceValue<JavaTypeName,JavaType> ref )
{
final JavaType type = ref.target();
return ( type != null ? (Class<T>) type.artifact() : null );
}
}