/******************************************************************************
* 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.samples.gallery.internal;
import org.eclipse.sapphire.DisposeEvent;
import org.eclipse.sapphire.Element;
import org.eclipse.sapphire.FilteredListener;
import org.eclipse.sapphire.Listener;
import org.eclipse.sapphire.PropertyContentEvent;
import org.eclipse.sapphire.Value;
import org.eclipse.sapphire.samples.gallery.IValuePropertyActionsGallery;
import org.eclipse.sapphire.samples.gallery.IValuePropertyActionsGalleryEntity;
import org.eclipse.sapphire.ui.Presentation;
import org.eclipse.sapphire.ui.SapphireAction;
import org.eclipse.sapphire.ui.def.ActionHandlerDef;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class ValuePropertyActionsGalleryReferenceCreateActionHandler1 extends ValuePropertyActionsGalleryReferenceCreateActionHandlerBase
{
@Override
public void init( final SapphireAction action,
final ActionHandlerDef def )
{
super.init( action, def );
final Listener listener = new FilteredListener<PropertyContentEvent>()
{
@Override
protected void handleTypedEvent( final PropertyContentEvent event )
{
refreshActionState();
}
};
final Element element = getModelElement();
final IValuePropertyActionsGallery gallery = element.nearest( IValuePropertyActionsGallery.class );
final String propertyName = property().name();
gallery.attach( listener, "Entities/*" );
element.attach( listener, propertyName );
refreshActionState();
attach
(
new FilteredListener<DisposeEvent>()
{
@Override
protected void handleTypedEvent( final DisposeEvent event )
{
gallery.detach( listener, "Entities/*" );
element.detach( listener, propertyName );
}
}
);
}
private void refreshActionState()
{
final String entityName = ( (Value<?>) property() ).text();
final boolean newEnablementState = ( entityName != null && ! isEntityDefined( entityName ) );
setEnabled( newEnablementState );
final String newLabel = ( entityName == null ? "create" : "create " + entityName );
setLabel( newLabel );
}
@Override
protected Object run( final Presentation context )
{
final Element element = getModelElement();
final String entityName = ( (Value<?>) property() ).text();
if( entityName != null && ! isEntityDefined( entityName ) )
{
final IValuePropertyActionsGalleryEntity entity = element.nearest( IValuePropertyActionsGallery.class ).getEntities().insert();
entity.setName( entityName );
}
return null;
}
}